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IP.com Disclosure Number: IPCOM000027035D
Original Publication Date: 1994-Dec-31
Included in the Prior Art Database: 2004-Apr-07

Publishing Venue

Xerox Disclosure Journal


Intercolor bleeding when two or more different colored aqueous inks are printed on plain paper is one dificulty encountered in ink jet printing. The bleeding is caused by mixing of the two inks upon imaging. Control of color bleeding for dye-based inks is generally more difficult than control of bleeding for pigment-based inks because of the ease of dissolving water soluble dyes near the bordering area of a two-color image by a second aqueous ink. The successful immobilization of the dye near the abut area immediately after printing the first color and prior to the application of a second color adjacent thereto can render the first dye insoluble in water; thus, the dye in the imaged area neighboring to the other color will not be redissolved by subsequent contact with the second color aqueous ink. This immobilization can also reduce showthrough and feathering of dye-based aqueous inks and can improve waterfastness, lightfastness, and optical density, and can reduce the chance of intercolor bleeding as a result of induced pigment precipitation.