Dual density foam inking member and method of making the same

Details Dual density foam inking member and method of making the same Dual density foam inking member and method of making the same

B - Operations, Transporting

41

J

B41J 27/20 (2006.01) B29C 67/20 (2006.01) B41J 27/00 (2006.01) B41K 1/50 (2006.01)

Patent

CA 2124369

DUAL DENSITY FOAM INKING MEMBER AND METHOD OF MAKING THE SAME ABSTRACT OF THE DISCLOSURE This invention relates to an inking member made from a single, foraminous material. The foraminous material, such as polyurethane, is placed into a press. The top platen of the press is raised to a temperature of 380 to 450° F and the material is subjected to a pressure of 8,618kg/force on a 165mm ram load for a period approximately of 3.5 minutes. What results is an inking member having small pores in the area adjacent to the heated platen and larger pores in those portions of the pad that are distant from the heated platen. This yields a foraminous, member that has utility as an inking member with the small pore portion acting as an ink metering layer and the large pore portion acting as an ink reservoir layer.

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