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printech, April, 2001
Re: Environmentally sound ink


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From:Deb Jacobson(djacobson@istc.illinois.edu)
Date:Tue, 17 Apr 2001 09:58:26


Dear Rebekah - Thank you for contacting PNEAC. In terms of responding to your questions about your library's impact on the environment I will do my best to respond to your questions, however please keep in mind that PNEAC's mission is to focus on assisting the commercial printing industry to comply with U.S. EPA regulations and reducing their impact it has on the environment. 1) Soy based ink is used throughout the offset lithographic printing industry. In most cases the offset inks, unless specialty products, are formulated with at least some portion of soy oil. 2) No, soy oil is not used in cartridges for computer printers and copiers for the consumer. As you have seen in copy machines computer printers primarily use a powdered pigment system. The liquid ink cartridges are a different chemical formulation. 3) Soy based inks are vegetable based inks. They are grouped into a class called vegetable based inks because a number of vegetable oils can be used in the formulation of offset lithographic inks. 4) To my knowledge no one vegetable oil is better than the other. It is simply a factor of supply and cost. 5) Pad ink is typically water based ink. It is a different process and does not use soy or other vegetable based oils. In terms of resources available - I would recommend that you refer customers of your library to our web site so that they are assured the most up-to-date copy of our resource materials. Best regards, Debra Jacobson



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