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Continuous-Feed Inkjet Grades : The Paper Chase for Inkjet

March 2011 By Julie Greenbaum
Associate Editor

Georgia-Pacific offers two specific lines of uncoated papers for web inkjet presses—one for dye-based and one for pigment-based devices. According to Kelly Ferguson, director of public affairs and communications for Georgia-Pacific, standard paper grades offer better print quality on pigment-based inkjet presses—like the HP T-series and the Kodak Prosper—if a bonding agent is applied, typically on the press.

The manufacturer has also developed Spectrum Web Inkjet with ColorPRO Technology for high-quality printing on pigment-based presses without the use of a separate bonding agent. Stocks that carry the "ColorPRO Technology" designation have met a set of quality specifications defined by HP and verified by the Rochester Institute of Technology's Printing Applications Laboratory.

For dye-based presses such as the Kodak Versamark, Océ JetStream and Screen Truepress, Georgia-Pacific offers Spectrum Web Inkjet DB converting papers to support water-fast monochrome printing applications.

Domtar has engineered specific products that offer fast drying and water fastness properties to perform on the latest generation of continuous-feed inkjet presses. Its products are designed to function in most presses running either dye or pigment inks. Surface treated grades are also available for the presses that perform best with enhanced products.

"We also offer non-treated, super-smooth paper designed for presses that can apply a bonding agent in-line," explains Jan Martin, events, fulfillment and communications manager for Domtar. "But, as the press technology advances further, we hope to provide multi-functional products that are interchangeable between both offset and digital technology. The printing market will demand products that allow for optimal press utilization (regardless of imaging technology), without concern for paper differences."

AbitibiBowater's uncoated grade, Ecopaque Jet paper with ColorPRO Technology, is specifically designed for high-speed continuous inkjet presses, and does not require any additional surface treatment. According to the company, Ecopaque Jet is suitable for any brand of press, and has been tested and approved for HP devices. The paper reportedly has also been tested successfully on Océ JetStream, Kodak Prosper and Screen Truepress Jet presses.

Surface Enhancement

Weyerhaeuser's Newsprint Div., North Pacific Paper (NORPAC), has partnered with Kodak in developing a surface enhancement which, when applied to its uncoated groundwood base stock, will reportedly provide optimal print density, minimal show-through and character fidelity when used on Kodak's Prosper 1000 and 5000 presses. Norbrite Book DIJ, which has been designed for use on the Kodak Prosper, employs a surface treatment.

“We have many customers that want to partner with us and run their own trials on new equipment," notes Beth Cobb, manager of printing and publishing sales for Weyerhaeuser's Newsprint Div. "Customer feedback from these trials is always taken into consideration when determining if we qualify a product to be sold for specific equipment.”  PI



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