Ink jet printing apparatus and process

Details Ink jet printing apparatus and process Ink jet printing apparatus and process

B - Operations, Transporting

41

J

101/96.02

B41J 3/28 (2006.01) B41J 2/01 (2006.01) B41J 2/04 (2006.01) B41J 3/407 (2006.01) C09D 11/00 (2006.01)

Patent

CA 1165174

- 17 - ABSTRACT An ink jet printing apparatus is shown which has a source (19) of pressurized ink connected to a plurality of solenoid valves (53). Each valve (53) has an input port(55) in fluid communication with the pressurized ink source (19) and an out- put port (51). A plurality of nozzles (29) are provided, each of the nozzles (29) being in fluid communication with a select one of the output ports (51) of the solenoid valves (53). Electrical control means (23) control the output of the solenoid valves (53) to the nozzles (29). In the ink jet printing process shown, a source of water- based pressurized ink is prepared and utilized in the apparatus which contains 60 to 95 percent by weight water, 0.05 to 25 percent by weight dye, and 2.5 to 20 percent by weight of a glycol ether consisting of butyl cellosolve, butyl carbitol, or a mixture thereof.

373019

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