Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1994-10-06
1997-06-10
Royer, William J.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
347 87, B41J 205, B41J 2175
Patent
active
056381018
ABSTRACT:
Described is an inkjet print cartridge including an ink reservoir; a substrate having a plurality of individual ink firing chambers with an ink firing element in each chamber; said ink firing chambers arranged in a first chamber array and a second chamber array and said firing chambers spaced so as to provide 600 dots per inch printing; an ink channel connecting said reservoir with said ink firing chambers, said channel including a primary channel connected at a first end with said reservoir and at a second end to a secondary channel; a separate inlet passage for each firing chamber connecting said secondary channel with said firing chamber for allowing high frequency refill of the firing chamber; a group of said firing chambers in adjacent relationship forming a primitive in which only one firing chamber in said primitive is activated at a time; a first circuit on said substrate connected to said firing elements; and a second circuit on said cartridge connected to said first circuit, for transmitting firing signals to said ink firing elements at a predetermined frequency. The preferred configuration of the nozzle member, ink channels, and firing chambers allows a printing resolution of 600 dots per inch.
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European Search Report.
Chapman Terri I.
Childers Winthrop D.
Courian Kenneth J.
Ho May F.
Keefe Brian J.
Hewlett--Packard Company
Royer William J.
Stenstrom Dennis G.
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