The published articles are meant to primarily educate the students in printing to supplement their knowledge in the field of Printing. These are not simple Glossary of printing terms, but to the extent possible every term has been explained in brief so that it can be of some use to the students who appear in some sort of examinations and interviews.
I served the Printing Industry for over 40 years
in various capacities, a major part in an Security Printing Organization. In order not to waste the printing and paper related knowledge which I gained over years, I decided to keep them in public domain for the reason stated in prepara. Most of the illustrations - over 90% - have been generated by me to explain the terms suitably.
While I am not sure to what extent the published content will help, if the content is going to be of use to some one in some manner, I will be greatly satisfied.
Your views may be sent to me (
nrj_1945@yahoo.com) for my record and correction wherever needed.

TOTAL NO OF PRINTING TERMS

POSTED TILL NOVEMBER, 2012

- Over 400 terms-

Click on this line to read from 'A'

Saturday, March 22, 2014

Recent Developments in Printing - 5


The Elastomer has become an important material for making flat Printing plates or Sleeves for engraving  in combination with the Photo Polymer component. The Elastomer  is the polymer constituent of natural rubber, which is made from the milky latex of various rubber trees. Natural rubber is still an important industrial polymer, but it now competes with a number of synthetic rubbers which are derived from by-products of petroleum and natural gas. Elastomers are usually thermo sets but may also be thermoplastic. 
 

The molecular structure of the Elastomer material consists of several cross links with a meatball like structure linking them together called covalent bonds. The assemblage of linked units is often referred to as the chain and the atoms between which the chemical bonding takes place are said to make up the backbone of the chain. The molecular structure and their behaviour gives the Polymers the properties of extensibility and elasticity and therefore the properties of Elastomer need to be modified by converting the original liquid form into a solid state that will not flow by curing or vulcanizing process. They are then turned into useful Elastomer Flexo Plate materials. The Elastomer is used in combination with certain Polymer substances for use as Flexographic plates or Sleeves to convert them as printing plate. Flexographic printing plates made from rubber provide excellent printing quality.


The Elastomer Flexo Plate /Sleeves are   taking the Flexographic Industry by storm as the plates have distinct advantages like :
  • Lesser processing  steps
  • Produce superior print qualities
  • Cause no plate swelling during printing
  • Print 2-6 times longer than Polymer plates
  • Enables faster registration
  • Short  make ready  time involved
  • Faster machine speeds possible compared to other plates
  • Reach color density faster with improved print contrast
  • Overall usage cost  is lesser  than Polymer.
Elastomer plates are mostly designed for direct engraving technology particularly in sleeve form. Developments in direct laser engraved plates have opened new avenues for the flexographic printing industry. Direct engraving has the potential to improve not only the quality but also cost efficient. Start-up waste, registration, make-ready time and print speed all favor the choice of direct engraved Flexo sleeved plates.


In the recent years sleeve technology for making engraved plates, instead of preparing conventional printing plates has been put to increased use in wide range of graphic and technical applica­tions. The Elastomer sleeves are thicker and more durable. This eliminates the use of multiple plates or sleeves for long runs. Sleeve durability does not just come from Elastomer materials alone whose ability to stand up to press pressures, corrosive inks and cleaning solutions are high but also from the way they are imaged on the engraving machine. 

Digital control of the halftone shoulders (blank areas between images) during engraving the Elastomer plates or sleeves contributes to dot stability and reduces break-off which adds durability and consistency. Engravings below the image surface play important role as their shape and depth cause consistent images even if the plate is slightly over squeezed on machines. Control of the shoulder allows to print razor sharp texts even when their size is below 2 points and the ability to print smaller reverse text without filling in. This is where the Elastomer product helps in. Laser engraved Elastomer sleeves have an inherent quality control advantage over normal Photo-Polymer plates. Sleeves can be stored vertically requiring less warehouse floor space.
 
A wide variety of elastomer materials with different durometers and ink lay down characteristics are now available as manufactured by some of the expertise firms around the world. It was observed that higher ink densities could be achieved with laser engraved Elastomer sleeves even at higher press speeds at the same time maintaining print contrast. M/s Eastman Kodak has developed a system whereby all Elastomer sleeves are quickly pre-scanned on the engraver to check for a flawless surface and rejected before imaging if any imperfections are detected. 
The laser engraved Elastomer sleeves have only three steps to imaging :
  • layout preparation
  • engraving
  • and finishing 
This means that once  the sleeves are  to be mounted on the machine and command given  they are engraved and finished without involving wash ups with several steps and solutions. Photo polymer sleeves have many more steps like 
  • file preparation
  • masking
  • exposing
  • developing
  • washing-out
  •  drying
  • post exposure if needed etc.

Wednesday, March 19, 2014

World's first ever sheet fed inkjet multi colour digital printing machine

For the last 78 years Fujifilm has been continually involved itself in research and development in highly versatile fundamental core technologies. In the printing front Fujifilm has come out with the world's first ever sheet fed inkjet multi colour digital printing machine that produces full color printing  with high speed offering benchmark productivity, print quality, and economics in cost. In the year  2005, Fujifilm bought Sericol Ltd., a UK-based printing ink company specializing in the inkjet, screen, and narrow web print markets and in the year 2006 Avecia Inkjet Ltd., a UK ink manufacturer of dyes used in inkjet printers was also acquired  followed by the acquisition of  Dimatix, a US manufacturer of piezoelectric print heads and fluid dispensing micro pumps in the same year. Combined with  the  three technologies, Fujifilm manufactured 'J Press 720' sheet fed production inkjet printing machine which produced prints similar to the one produced by the Offset Printing. This machine was first unveiled in Drupa in the year 2008. From then on Fujifilm  began manufacturing digital printing press to web presses including the one that uses UV inks.

The world's first sheet fed inkjet model
'J Press 720' is based on Inkjet Principle for inking instead of inking the plates for printing with series of roller as found in normal printing machines. Though Inkjet inking Fujifilm claims that this machine meets the quality, versatility, productivity, and efficiency they demand. The 'J Press 720' machine can effectively meet the demand of print runs of just one or few thousands where traditional offset and digital printing fail to perform. The 'J Press 720' is set to open new opportunities in the market for short-run, general purpose commercial print using 29.5"x 20.8" sheet with an output of 2,700 sheets per hour. The versatility to handle even the shortest of press runs is its main advantage. With a half-size format and a production speed of up to 1.3 seconds per sheet, this revolutionary machine is faster and more flexible than any other digital inkjet sheet fed press found on the market. It looks like a normal sheet fed  Offset machine.  

 Feeder end

 Delivery End
 
The 'J Press 720' looks a lot like any other normal sheet fed offset machine at the outset if you look at the feeder and delivery ends of the machine. It operates at 2700 sheets per hour with a maximum sheet size of 20.8” x 29.5” with a printable area of 20.5” x 28.3” which is not possible on a normal printing machine as sufficient margin is needed for gripper and tail edges besides side margins. The speed of 2700 sheets per hour thus translates the output to over 10000 single pages per hour. The minimum sheet size it accepts is 15” x 23.1”. In addition to the feed and delivery, like an offset press, it uses drum and grippers for transport. The machine has temperature control system to ensure production consistency. As the paper moves towards the priming unit an anilox roller system applies Fujifilm’s Rapid Coagulation Primer (RCP) across the entire sheet. This pre-coating helps the inks bind to the paper surface with minimal dot spread. After priming the coating is dried and moisture is extracted out to ensure paper control throughout the print process. 

From there, the paper moves to the inking unit which has four process colour inkjets with a print bar each for four process colors, and once the sheet is printed it moves to the dryer unit. The hot air IR dryer ensures that the sheet is dry and flat for back printing or finishing when it comes off the press. After the dryer section, there is a sheet scanning QC unit. The J Press utilizes inline sensors to monitor quality control to ensure output quality and performing automatic corrections while printing. The CCD scanner scans the alternating color bars to see if the print quality is consistent and if any nozzles are misfiring to produce the desired colour output, it activates automatic device to make necessary adjustments to the adjacent nozzles to compensate the shortcomings. When the paper comes off of the delivery, it is dry to the touch. 



The cornerstone of the Fujifilm inkjet technology is the SAMBA
TM piezoelectric drop on demand (DOD) print head technology. Fuji film's MEMS manufacturing technology allows the head to achieve resolutions of 1,200 x 1,200 dpi with 4 levels of grey scale. This machine gives an impressive true 1,200 dpi x 1,200 dpi resolution on both coated and uncoated standard Offset paper stock with four-level gray scale unobtainable on any other inkjet press. High-precision inkjet nozzles that are both mechanically and chemically stable to work with great accuracy and spray good density of ink.

The SAMBATM piezoelectric drop on demand (DOD) print head deliver a dot size of 2 picoliters, which makes for a much smoother looking offset like print. The inking unit has inbuilt integrated controller that enhances color management system and color calibration capabilities to maximize color consistency without the intervention of the press operator. Each of the 4 colors (CMYK) has a print bar containing 17 heads that covers the full printable width of 28.3 inches. Each head has 2,048 nozzles, which totals almost 35,000 nozzles across the length of the print area for each color. Ink grains as small as 0.5 trillionths of a liter are discharged at high speed from the print head nozzle onto the paper. The inks used in the system are water-based pigment inks.which are eco-friendly and that produce high quality images. Additionally, there is no toner pile-up and results in prints of offset-like finish and quality. The water-based inks also mean the unit requires less cleaning and produce less wastage. The inks are currently manufactured by Fujifilm itself in Tokyo, as proprietory product to keep control on the entire ink system on the machines. 



The added advantage being the press requires no plate making, no need to run up to color adjustments, involves no make ready. It produces vibrant colors, superb skin tones, extraordinary fine text and line detail, and incredible flat tints all produced on standard offset paper.

In short the benefits of this machine has been the following:

  • 2,700 half-size sheets per hour produced
  • True offset quality derived
  • Standard offset coated and uncoated paper used
  • Virtually no make ready involved
  • Sheets emerge dry to the touch even though the delivery end is short as it is inbuilt with infrared drying system
  • Variable data permissible
  • Quality is enhanced through unique anti-curling and rapid coagulation priming Fujifilm technologies, which deliver vibrant images and prevent paper curl and dot gain.
  • Outstanding quality is achieved sheet-after-sheet since it uses a CCD sensor, which scans every sheet and makes necessary alteration in real time when the sheets are under print.
  • No colour (Ink) setting is required as the colour effect is taken care of by the automatic sensors.
  • No plate cylinder is fitted as it is digital printing
Sheets can be easily recycled as the results of trials carried out by the International Association of the Deinking Industry (INGEDE) on sheets printed by the 'J Press 720' indicated levels of de-inking on paper was on par with offset inks. In  all respects 'J Press 720'   inkjet printing can be treated like offset printing.

Fujifilm claims that there number of significant environmental benefits exists on
'J Press 720' like reduction in use of raw materials, hazardous pressroom consumables and paper waste, along with the complete elimination of the plate production process. 

Contact address 
FUJIFILM North America Corporation,
 Graphic Systems Division
Phone: 800.877.0555
Email: contactgraphics@fujifilm.com
Web: www.fujifilmgraphics.com

Saturday, March 15, 2014

Recent developments in Printing - 4


M/s Mitsubishi Heavy Industries Printing & Packaging Machinery, Ltd. has been reportedly established on July 1, 2010, to handle design, manufacturing, sales and after-sales service for Mitsubishi’s extensive line of printing and paper-converting machinery. The sheet-fed offset presses, Commercial Web presses and News Paper Printing Presses offered by Mitsubishi represent the culmination of advanced technologies developed during a period spanning more than a century and the combination of recent accomplishments achieved in mechatronics.  Mitsubishi offers a comprehensive line up of big and small presses which all are available in configurations of up to eight units.  The firm has been regularly publishing Technical Review Papers under  Technical Review | Mitsubishi Heavy Industries, Ltd that contains valuable information on the developments in Print Industry.  

One of the Technical Papers written by three authors MITSURU TABUCHI / HIROAKI IKEDA /FUMINORI FURUYASHIKI in Technical Review Vol. 42 / No.2 published in the year 2005, is abridged and reproduced below in new format that will be  easier for the students and others in printing to understand the concept of the development easily. The original article in full can however  be read in http://www.mhi.co.jp/technology/review/pdf. This technical article is thought provoking and gives interesting reading.

This article throws light on the emergence of new reusable plate system that can save material cost and reduce environmental impact by forming and erasing images repeatedly from the same plates in a single processing machine.

To reduce the processing cost and speed up delivery time, new ideas such as a Computer-To-Plate (CTP) system capable of making plates directly from image data or work flow has emerged in recent decade. Similar to it is the new concept Computer To Press (again CTP) that integrates the plate making and printing process in one combination system has also emerged. The big question will be how far will the 'Computer To Printing' is adaptable in those presses that are too small and low in speed, as the following aspects may be decisive.
  • Expensive laser imaging devices must be installed in each printing unit, making the initial investment very high. 
  • The printing machine must be stopped during plate making, thus lowering the production flow of the printing machine.
  • Existing plates on the market for Computer to Press are higher in cost than other plates for CTP or PS.
However by installing reusable or recycling plate system near the printing press, the integration of plate making and printing process is realized to improve efficiency of work flow without lowering the productivity. Establishment of such a system also overcomes the environment hazards such as vibration, dust etc.

This self made system processes a high print property anodized aluminum plate which is coated with a thermo sensitive polymer to take the images on it for printing which can be regenerated again after completing the print order. The same reusable plate system is also used for reprocessing the used plate for a fresh print order. By installing the reusable plate system close to the printing press, an integrated plate making and printing process is realized, and the work flow of the entire process is made more efficient. 

 The Plate recycling or reusable plate suggested is not meant to merely reduce the cost alone, but also to drastically reduce the annual consumption of  aluminum material that overcomes one important  environment hazards caused in the destruction of this metal besides reduction in material cost as the same base plate can be used repeatedly through this system.  

The Principle of plate recycling process : 

(1) Since the base metal used as print image carrier needs to have sufficient durability to withstand repeated use, an anodized aluminum plate which has excellent retention of water, with 0.1 mm to 0.3 mm in thickness can be used as base material of the Plate. Due to thinness of the metal it is likely to be deformed or flawed during transportation and therefore it is installed on a sleeve and conveyed together with the sleeve from plate making to the printing unit unlike conventional method where the plate is carried and mounted on a plate cylinder. This sleeved plate prevents deformation of flaws  that could occur during transportation and ensure satisfactory print quality equivalent to the one realized with Pre Sensitized and Computer To Plate.
(2) The second is the Polymer application on this sleeved metal plate. The Polymer element is required to have print durability with control of the film strength of print images, and also ease of erasing the images for recycling. The polymer can be handled in room light, and does not require any special storage facility.  
(3) The third is the heating orientation in which the Polymer is crystallized through heating with halogen lamp, and a printing area layer with excellent print durability of high hardness and very low solubility can be formed.
(4) By emitting infrared laser radiation oscillation in wavelength of 830 nm, the polymer in image area is instantly heated to a high temperature at the same time increasing the solubility of non print areas in a developer solution.
(5) The polymer in the non-printing area is dissolved and removed with alkaline solution while the image area remain unaffected thus completing the plate making process which realizes ready to use  printing plate.
(6) Prints are taken in usual presses with suitable commercial ink with or without dampening water.
(7) The polymer in the printing area is also dissolved after printing with another alkaline aqueous solution used as stripping or erasing solution, in which process the polymer is stripped off from the plate surface followed by washing with normal water that removes the eraser liquid from the plate surface so that the grained surface plate as was available in initial state for coating Polymer is obtained as fresh as before. The process of re coating and eraser is repeated after completion of every print order. 


The three sectional design elements on RPS-X1 (Reusable Plate System) :

(1) Polymer coating and drying unit
(2) Imaging and developing unit and
(3) Image erasure unit

After completion of the print order the plate moves through these stations sequentially in their sleeve format, and undergoes plate making and recycling process. Each time the printing plate is sequentially processed, regenerated and   processed in preset manner. The sleeved plate cylinder is formatted in such a manner that after completing printing, the plate can be detached from the sleeve in axial position and then inserted in the RPS-X1 for regeneration and recycling process. Handling of the printing plate is thus made very easy during  the print and recycling process.

The printing plate can be regenerated and used repeatedly till the grain on the metal gets deteriorated due to abrasion in regeneration process. The repeated regeneration of the plate causes reduction of cost on the printing material. In order to verify the print result of the degenerated plate, prints from the plate that was regenerated and used 20 times was taken  and analyzed which  indicated that no deterioration was found in print quality after sample from each copy of printing were measured for changes of dot percentage.


The processing devices of the RPS-X1 are installed on an elevating stage which moves up and down to accommodate various diameter sizes of sleeved plates and each processing device is set in an appropriate position to the plate surface. The conventional type of plate making device is installed in a prepress room with a relatively favorable environment. The RPS-X1 system if installed in the printing shop a clean air supply facility is required to prevent dust deposits that may emerge  from the system causing  plate making defects. 

The higher version MAX-V concept machine reusable plate making system is being developed to realize a combined system for commercial web offset printing press of variable printing length.

The higher version MAX-V new Plate recycling technology ensures reduction of plate material cost and lowering of impact on the environment while maintaining level of printing productivity as the new system suites printing needs of even small lots in the present diversified applications. This system can also be effectively used in web offset printing press of variable printing length.
 

 In web offset printing, the print size is limited and, depending on the size, waste of paper may be increased, but by varying the diameter of the plate sleeve, flexibility is possible with the use of full length plate without leaving much margin for the fixing bars as the plate is in sleeve format. As a result, one printing press can handle printing jobs of multiple sizes, and waste of paper is reduced.


The reusable plate system is applicable to changes in plate sleeve diameter, and in a system combined with MAX-V, waste is eliminated and running costs are reduced substantially. The concept machine RPS-X1 is designed to make plates sequentially, but an effective method of improving the processing  speed is to make plates simultaneously in parallel processes. This is also realized by the multi cylinder system shown above. 
(*) 
Mitsubishi Heavy Industries
1-1, Itosaki Minami 1-chome,
Mihara,
Hiroshima,
729-0393,
Japan
Phone: +81-848-67-2068
-----------------------------------------------End Note


2) The illustrations shown are based on the illustrations from the original article and some have been slightly modified for easy understanding  however without changing the basic concept in any manner.

3) If only one machine could print in various sizes!" The answer to such a market need is the newly developed variable size commercial web offset press LITHOPIA MAX-V. In a commercial web offset press, since continuous paper is used, high-speed operation is possible and its productivity is more than three times that of the sheet fed press. It has thus been a dream of the printing industry to realize flexibility of its print size, overcoming all difficulties to meet the high expectations held for such technology. Mitsubishi Heavy Industries, Ltd. (MHI) has developed "LITHOPIA MAX-V," a variable size commercial web offset press, which allows easy replacement of major component parts such as the plate cylinder. The printing cylinder has a sleeve mounted on the core so that the cylinder's circumferential length can be changed by replacing the sleeve, enabling the printing size to be changed. The first product was delivered to a domestic printing company and started commercial operation at the end of October 2005. {Courtesy : Mitsubishi Heavy Industries, Ltd.Technical Review Vol. 43 No. 3 (Sept. 2006)} 

Saturday, March 8, 2014

Offset Rubber Blankets Data - 6

(Written by  N.R. Jayaraman)

Some useful data on Rubber Blankets for Offset Printing. No single source of information is available on the availability and varieties of  Rubber Blankets used on Offset Printing Presses. Therefore I have compiled the data to the best extent possible  so that it will benefit of  Students and others  in Printing appearing in interviews and exams.


-VI-

BöTTCHER SYSTEMS, BELCAMP, MARYLAND


Böttcher is a global company with more than 275 years of experience in the development and manufacture of "world-class" materials for the printing industry. Böttcher has developed a diverse program of
Böttcher Top printing blankets and coating plates designed to achieve a single goal i.e to perfect the printed image and enhance the user-friendliness of presses.

Exact dot reproduction; rich, even solids; quick sheet and web release; and reduced piling - all of these criteria are achieved with the aid of Böttcher Top blankets. Excellent smash resistance and gauge stability guarantee top performance. Additional service from Böttcher includes blanket seminars from highly skilled field technicians. 


1) Böttcher Top 3201 /4-Ply /Thickness 077" / For use on Commercial Sheet fed printing Paper and Carton
2) Böttcher Top 4500/4-Ply /Thickness 077" / For use on Commercial Sheet fed printing Paper and Carton
3) Böttcher Top 5400 /4-Ply /Thickness 077" & Böttcher Top 5300 /3-ply/ Thickness 067"/ both for Enhanced Durability and good paper Release
4) Böttcher Top 8000 /4Ply / Thickness 077” /for optimum ink coverage
5) Böttcher Top 8600- /4-Ply /Thickness 077”/ for wide range of jobs and for optimum ink coverage
6) Böttcher Top Impressa/4-Ply /Thickness 077"/for coated and uncoated stock
7) Böttcher Top 4400 /4-Ply /Thickness 077"/Conventional, UV and Hybrid Printing
8) Böttcher Top 4800 /4-Ply /Thickness 077"/ for UV, EB and Hybrid Printing
9) Böttcher Top 3800 / 4-Ply /Thickness 077"/for Conventional, UV and Hybrid Printing
10)Böttcher Top 8200 /4-Ply /Thickness 077"/ for Conventional, UV and Hybrid Applications

Böttcher Systems

4600 Mercedes Drive
Belcamp, MD 21017
Contact



I.T.G. GRAPHIC PRODUCTS, GMBH

I.T.G.-GmbH Graphic Products is specialists in the supply of I.T.G. Security Printer Blankets to various firms across the world. The firm has a long working experience in the Graphic Arts with their wide and diversified range of products. I.T.G.-GmbH manufactures two specialized blankets for De La Rue Giori who are suppliers of Security Printing machines. 

The three types of Blankets supplied by I.T.G for them include the following:

1) I.T.G.-Glass bead Blanket meant for Super Numerota machines. The final surface coating is impregnated with micro-fine glass spheres. The tough ink repellent surface provides excellent reproduction with minimum impression. 

2) I.T.G. - Super-Blue Conventional Offset-Rubber-Blanket for Simultan machines/ 3 ply/ Thickness 1.70 and in 4-ply/ Thickness 1.95 mm./ This blanket has a hard surface layer giving high solvent resistance and excellent sheet release properties on lightweight coated papers.
3) I.T.G.-Simultan-Special 80/ Blue in colour/ Thickness 1.95mm / Shore hardness 77°/ A superior printing blanket with an extremely low stretch carcass of fabrics and adhesives designed specifically for blankets. The printing surface is a blend of polymers and additives which ensures high printing quality and excellent release.

Other varieties of I.T.G Rubber Blankets produced by them include the following:

1) Maxima-Compressible/ Turquoise and blue in colour/ Thickness 1.95 mm to 1.70 mm/Shore Hardness 81 °/meant for sheet fed presses
2) Proprint / Blue in colour /Thickness 1.95 mm to 1.70 mm/Shore Hardness 76°/for slow sheet-fed machines printing coated and uncoated paper .
3) Blue-Diamond / Blue in colour /Thickness 1.96 mm to 1.70 mm/Shore Hardness 78°/For excellent print result.
4) Proprint WEB / Turquoise in colour /Thickness 1.70 mm to 1.95 mm /Shore Hardness 78°/ to print with less pressure
5) Proprint UV / Red in colour / Thickness 1.96 mm/ Shore hardness/ 78°/ for UV ink printing and has heat resistance quality
6) Lithoflex 800 / Green in colour / Thickness 1.96 mm/ Shore hardness/ 78°/ for carton and general sheet fed printing
7) Tiagra / Blue in colour /Thickness 1.95 mm/ Shore hardness/ 75°/ for commercial sheet applications.
8) Rotaflex / Grey in colour / Thickness 0.9 mm to 1.05 mm / Shore hardness/ 65° to 70°/ designed to meet the requirement of the business forms printer. 9) Thickness 1.96 mm/ Shore hardness/ 78°/ for UV ink printing and has heat resistance quality
10) Polyfibron Type 100 / Thickness 0.68 mm to 1.07 mm/ Shore hardness/ 77°/ Self-adhesive backed
11) Offset Blanket air-tack Type M/J meant for business form printing.

I.T.G.-GmbH Graphic Products
Dachauer Str. 201 80637 Munich Germany
Phone: +49 (89) 159 40 20
Fax: +49 (89) 157 55 07
E Mail:  info@itg-graph.de



GANS INK CO,  USA

Established in 1950, Gans Ink & Supply has over half a century of experience in ink manufacturing for both sheet-fed and web offset commercial printers. With 10 locations across the country Gans Ink also make the Gans blanket printers need.


Their Blankets have the following advantages:

  • less linting
  • reduces paper piling 
  • minimal dot gain washes up easily 
  • high tensile backing 
  • preventing stretch 
  • longer working life
Some of the varieties of Blankets manufactured by them include the following:

1) Gans 893/894 : Light cream in colour they are supplied as 3 and 4 Ply blankets specially made for the application of aqueous coatings and easily strippable if spot-coating is to be applied. They deliver dependable performance and a clean release with most aqueous coatings.
2) Gans ISO.Spec : For printers who prefer a buffed surface for applying aqueous coating, Gans ISO.Spec has been specially developed to suit the purpose.
3) Reeves 2000 Plus : The 2000 Plus is manufactured with a premium cast-coated surface for a smooth release to the sheet, even with the most difficult matte aqueous coatings.
4) Gans 774 : This material has a softer, more compressible surface to absorb cylinder compression and resist paper cut-lines for extended periods of time and deliver dependable performance to the high volume web production environment.
5) Gans Ultra-Cure : Gans Ultra-Cure blankets are meant for UV and Hybrid curable inks and have been manufactured for long-life resistance to the aggressive effects of UV inks and washes. The firm claim that the Gans Ultra-Cure blanket will resist breakdown for an extended period of time as they are fabricated with 100% EPDM surface compounds. Ultra-Cure blankets can be used in both sheet-fed and web applications.
6) Gans RAVE : Gans Rave blankets have been the industry standard for nearly 10 years. Made with EPDM surface compounds that are resistant to the long-term embossing affects of UV curable inks, Rave will deliver dependable performance to the sheet-fed printer. This blanket has a double buffed surface for smooth transfer and release.

The other technical details are not available and therefore the firm has to be directly contacted for specific need.

Gans Ink and Supply Company
Head Quarters,
Los Angeles
1441, Boyd Street,
Los Angeles,
CA 90033,
USA.
Tele: (800) 421-6167 and (323) 264-2200
FAX: (323) 264-2916
sales@gansink.com


TRELLEBORG, ITALY

Trelleborg manufactures Vulcan and Rollin offset printing blankets in the web, sheet fed, newspaper, business forms, metal decorating, and packaging markets. As one of the world's largest and most diversified manufacturer of printing blankets, Trelleborg, has almost 100 years invested in the printing industry. Rollin brand Rubber Blanket is the new brand name for the MacDermid Printing Blankets that was purchased by Trelleborg in 2008.  A recent addition to the Trelleborg range of blankets is the Printec printing blankets that offer unique printing solutions in the graphics industry.

The two varieties of Blankets supplied by Trelleborg are:

Rollin Blankets

1) Rollin Graffiti Plus / Blue in colour /3 Ply/ Thickness varying from 1.71 mm to 1.96 mm/ meant for News Paper and Commercial Web printing presses
2) Rollin Magento/ Blue in colour /Thickness 1.96 mm /4 Ply/ meant for conventional UV printing and Metal decorating presses

Printec Blankets

1) Printec Product No 63 / Purple in Colour / Thickness 1.70 mm /meant for commercial web printing press
2) Printec Product No 64 / Purple in Colour / Thickness 1.96 mm /meant for commercial web printing press
3) Printec Product No 134 / Blue in Colour / Thickness 1.96 mm / Hybrid blankets meant for commercial packaging sheet printing press
4) Printec Product No 575 / Purple in Colour / Thickness 1.96 mm / Hybrid blankets meant for commercial sheet printing press
5) Printec Product No 284 / Purple in Colour / Thickness 1.96 mm / meant for conventional packaging sheet printing press
6) Printec Product No 864 / Purple in Colour / Thickness 1.96 mm / meant for conventional sheet printing press
7) Printec Product No 334 / Orange in Colour / Thickness 1.96 mm /meant for UV ink printing press
8) Printec Product No 263 / Purple in Colour / Thickness 1.96 mm / meant for Hybrid ink for metal decorating printing press
9) Printec Product No 814 / Red in Colour / Thickness 1.98 mm /meant for Hybrid ink for metal decorating printing press
10) Printec Product No 501 / Pink in Colour / Thickness 1.96 mm / meant for Hybrid ink for metal decorating conventional printing press
11) Printec Product No 205 / Blue in Colour / Thickness 1.97 mm /meant for Metal decorating UV ink printing press
12) Printec Product No 115 / Blue in Colour / Thickness 1.25 mm / meant for Hybrid ink for printing press
13) Printec Product No 135 / Blue in Colour / Thickness 1.35 mm / meant for Hybrid ink for printing press
14) Printec Product No 205 / Blue in Colour / Thickness 1.98 mm / meant for Hybrid ink for printing press
15) Printec Product No 205 / Cream in Colour / Thickness 1.96 mm / meant for Hybrid ink for
16) Printec Product No 205 / Blue in Colour / Thickness 1.96 mm / meant for Hybrid ink for printing press
17) Printec Product No 205 / Orange in Colour / Thickness 1.98 mm /meant for UV ink coating printing press
18) Printec Product No 205 /Orange in Colour / Thickness 1.96 mm /meant for UV ink coating printing press
19) Printec Product No 623 / Black in Colour / Thickness 1.70 mm / meant for Hybrid ink for Plastic Pot printing press
20) Printec Product No 624 / Black in Colour / Thickness 1.96 mm /meant meant for Hybrid ink for Plastic Pot printing press
21) Printec Product No 717 / Purple in Colour / Thickness 1.70 mm / meant for Hybrid ink for Plastic Pot printing press
22) Printec Product No 718 / Purple in Colour / Thickness 1.96 mm / meant for Hybrid ink for Plastic Pot printing press

Since more technical details of both the types of Blankets are not available the firm may be directly contacted by clicking the 'contact' link given below.

Trelleborg Coated Systems Italy S.p.A. (TCS)
Strada per Tavazzano
IT-26855 Lodi Vecchio (LO), Italy
Phone: +39 0371 4061
printing@trelleborg.com
Europe, Africa, Oceania & Asia Customer service
tel: +39 0371 406321
Contact

-CONCLUDED-

Offset Rubber Blankets Data - 5

(Written by  N.R. Jayaraman)

Some useful data on Rubber Blankets for Offset Printing. No single source of information is available on the availability and varieties of  Rubber Blankets used on Offset Printing Presses. Therefore I have compiled the data to the best extent possible  so that it will benefit of  Students and others  in Printing appearing in interviews and exams.


-V-
VULCAN, USA
 
The Vulcan® name is the oldest and most-respected name in printing blankets. They have one-hundred year history in the manufacture best quality Vulcan offset printing blankets in the industry. One encountering problems in printing with UV inks, new coating methods, or obtaining high-speed perfection Vulcan claims that they will help achieve the best possible results.

Some of the Vulcan blankets manufactured by them are the following:

1) Vulcan® Cart-One - Blue colour / Thickness 1.96 mm /Shore hardness 68° / for use with UV, sheet fed machines and metal decorative printing.
2) Vulcan® Cart-One UV - Blue colour / Thickness 1.96 mm /Shore hardness 70° / for use on UV ink printing.
3) Vulcan® Folio - Violet in colour / Thickness 1.96 mm /Shore hardness 66° / for use on high quality sheet fed printing
4) Vulcan® Response - Liberty Green colour / Thickness 0.077" /Shore hardness 70° / for use with UV, sheet fed machines and metal decorative printing.
5) Vulcan 2000®Plus - Silver Grey colour / Thickness 0.067" /Shore hardness 70° / for use with UV, sheet fed machines and metal decorative printing.
6) Vulcan 714® - Green in colour / Thickness 0.067" and 0.77" /Shore hardness 82° / for use on sheet and web presses.
7) Vulcan® 714 Master - Teal in colour / Thickness 1.71 mm and 1.96 mm /Shore hardness 70° / for general purpose printing
8) Vulcan® 914 5 Ply - Teal in colour / Thickness 0.103" /Shore hardness 70° / for use on Ryobi and Itek brand machines
9) Vulcan® 101 - Steel Grey colour / Thickness 0.067" and 0.077" /Shore hardness 70°
10) Vulcan® 102 - Blue colour / Thickness 1.71mm /Shore hardness 70° / for use with heat set and Cold set inks
11) Vulcan® Reflection - Dark Blue in colour / Thickness 0.067" and 0.077"/Shore hardness 70°/ for use sheet fed and web press
12) Vulcan® Reflection SRF - Dark Blue in colour / Thickness 0.067" and 0.077"/Shore hardness 70° / for quick release of paper
13) Vulcan 2000® Plus SR - Silver Grey in colour / Thickness 0.067" and 0.077" /Shore hardness 70°
14) Vulcan® 578 R - Blue in colour / Thickness 0.067" and 0.077"/Shore hardness 70° / for use on presses requiring higher pressure
15) Vulcan® 914 - Teal in colour / Thickness 0.067" and 0.077"/Shore hardness 70° / for use on general machines
16) Vulcan® Champion NC - Blue in colour / Thickness 0.067" and 0.077"/Shore hardness 60° / for use on box board printing machines
17) Vulcan® Combo - Light Blue in colour / Thickness 1.71 mm and 1.96 mm/ Shore hardness 70° / for use with UV inks and hybrid inks
18) Vulcan® Eco - Light Blue in colour / Thickness 1.96 mm /Shore hardness 70° / for use on sheet feed and metal decorating printing machines
19) Vulcan® UV - Purple in colour / Thickness 1.96 mm/ Shore hardness 68° / for use on UV ink on printing machines
20) Other few varieties include Vulcan® UV shield, Vulcan® 714 Strippable, Vulcan® Champion Compressible, Vulcan® Image 4 U, Vulcan® Strippable etc.

For more information one may contact them by clicking 'Contact' below.

Trelleborg Coated Systems US, Inc.
790 Reeves Street
Spartanburg, SC 29301, USA
Phone: (800) 344-0714
Fax: (864) 595-2273
Contact


KOENIG & BAUER, WURZBURG

World wide the Koenig & Bauer Group is the second-largest Printing press manufacturer of several types of Printing machines. KBA's core competence is the development and manufacture of technologically innovative yet cost-effective printing systems and peripherals. Their parent company is Koenig & Bauer AG (KBA) with facilities available in Würzburg, Radebeul, KBA-FT Engineering GmbH and Albert-Frankenthal GmbH in Frankenthal and Trennfeld (all in Germany). Koenig & Bauer Offset Rubber Blanket consist of two varieties as shown below:

1) KBA Conventional premium rubber blankets - Green in colour / Thickness 1.95 mm / Shore Hardness 60° /
2) Combi UV premium rubber blankets - Magenta in colour/Thickness 1.95 mm/Shore Hardness 66°

One can contact them for more details by clicking the link 'contact' given below.

Koenig & Bauer AG
Werk Würzburg
Friedrich-Koenig-Str. 4
97080 Würzburg
Deutschland
Tel.: (+49) 931 909-0
Fax: (+49) 931 909-4101
Mail: kba-wuerzburg@kba.com
Contact


OHDEN PEGASUS , JAPAN

OHDEN Pegasus offset blankets are manufactured in Japan under OEM basis by their affiliated sister group. Pegasus offset blanket’s compressible layer increases blanket durability, has excellent absorption such as blanket smash and mechanical shock on a press and has high print quality.

They supply few models of Rubber Blankets in the following range. The firm claims that their blankets are approved by major press manufacturers of Mitsubishi, Heidelberg Japan, Ryobi, and Hamada for use on their machines.

1) Model PB-400 - Blue in colour / 4-ply /Thickness 1.95 mm/Shore hardness 60 /suitable for sheet-fed presses
2) Model PB-300 - Blue in colour / 3-ply /Thickness 1.95 mm/Shore hardness 59 /suitable for general sheet fed printing
3) Model PB-300 UV - Violet in colour / 3-ply /Thickness 1.95 mm/Shore hardness 59 /suitable for UV printing

OHDEN LIMITED, JAPAN

OKU Building,
1-13-14 Utsubo-Honmachi
Nishi-Ku Osaka
550-0004 Japan
Tel -81-6-6448-2736
Fax: 81-6-6448-7930
E mail: sales@ohden.com
Contact
 ..........To be continued