offset press

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offset press

[′ȯf‚set ‚pres]
(graphic arts)
A printing press for offset lithography printing.

offset press

A printer that uses an intermediate rubber-coated cylinder known as a "blanket" to transfer the image onto the paper. Instead of transferring the image from a metallic drum onto paper as is done with most digital printers, the image is "offset" onto the blanket and then to paper. The blanket creates a smoother image on most types of paper and can print on rough or heavy stock as well as other media. Most offset presses use this lithographic method.

Sheet Fed and Web Fed
Sheet-fed offset printers use cut sheets of paper, whereas web-fed printers use rolls of paper that are cut and trimmed after printing. The web-based offset method is typically used for high-speed, high-volume applications such as printing newspapers and magazines.

Right Reading to Wrong Reading
Since offset presses use the intermediate blanket as the transfer mechanism, the original negative image on the drum is right-reading. It becomes wrong-reading on the blanket and then back to the original on the paper.

Combination Offset and Laser
Indigo USA, Woburn, MA (, which was acquired by HP in 2002, combines laser printing and offset printing. It makes a "digital offset color press," which is an electrophotographic printer that offsets to a blanket instead of imaging directly from the drum. It also uses a special liquid toner instead of dry toner, enabling it to print on polyester, PVC, films and other media as well as coated and uncoated paper. See lithography, digital printing, right-reading and DI press.

Offset and Digital, Too
HP Indigo's "digital offset color presses" are digital printers that use a blanket to image the pages instead of directly from the drum. Combined with its Electroink dry toner, Indigo printers can print on a wide variety of substrates. (Image courtesy of Hewlett-Packard Company.)
References in periodicals archive ?
At the Maastricht site, BASF currently produces offset printing inks and pigment preparations for the plastics industry.
The samples of colour prints are obtained by the offset printing with ink with higher share of renewable raw materials, (Heidelberg sheet fed machine), indirect electrophotography with liquid toner (Turbo Stream HP Indigo machine) and electrophotography printing with dry toner (Xerox DocuColor 5000 machine).
MacDermid Offset Printing Blankets, based in Denver, Colorado, is a leading provider of polymer-coated composite fabrics (printing blankets) used in offset printing.
Tolmie, a 45-year veteran in the imaging industry, explains the digital offset printing process in layman's terms: "Liquid ink is filled into a drum, which transfers the ink onto media in the form of an image.
Laser, inkjet, offset printing, etching, pin-marking and stamping machines and systems are long-lasting, user-friendly and reliable.
In addition, the absence of traditional offset printing set-up costs are driving greater cost savings.
We are particularly pleased that the Gallus RCS 430 allows us to change offset printing plates in the press.
Swedish industrial group Trelleborg AB said on Wednesday (19 March) that its business area Trelleborg Engineered Systems has agreed to acquire the US company MacDermid Offset Printing Blankets from MacDermid Inc.
Oliver Rudolph of Voith Paper reported on a commercial scale trial making coated freesheet offset printing paper.
Toppan's ink jet printer incorporates UV curing technology to solve a common ink jet issue, which is to produce print quality equal to offset printing that is also water resistant.
Generators on the roof protect the building's power supply, and workers are experts in offset printing.