Stable substrate structure for a wide swath nozzle array in a high resolution inkjet printer
First Claim
1. A method of using a print cartridge in an inkjet printer, said print cartridge including a printhead having an array of ink nozzles aligned respectively over a plurality of firing chambers, said method comprising the steps of:
- moving said printhead with respect to a medium in said inkjet printer, said printhead including a substrate;
providing electrical signals to said substrate to eject droplets of ink from said ink nozzles, said substrate including end portions with one or more columns of firing chambers located on said substrate between said end portions, with said firing chambers extending in a longitudinal direction along at least one outer edge of said substrate and spaced less than 1/500th of an inch apart in said longitudinal direction so as to eject said droplets of ink on said medium at a dots per inch resolution of less than 1/500th of an inch in said longitudinal direction as said printhead moves with respect to said medium in a direction perpendicular to said longitudinal direction;
supplying ink through ink channel means connecting an ink reservoir with said firing chambers, said ink channel means for passing ink from an underside of said substrate around an outer edge of said substrate to said firing chambers; and
supplying ink to said ink reservoir.
2 Assignments
0 Petitions
Accused Products
Abstract
An inkjet printhead includes a compact substrate of increased stability and structural integrity to provide a high resolution 600 dot-per-inch nozzle array having a one-half inch swath. A plurality of ink vaporization chambers are respectively aligned with the nozzles in two longitudinal columns, one column extending longitudinally along one edge of the substrate and a second column extending longitudinally along an opposite edge of the substrate, with ink feed channels communicating through an ink passage from an underside of the substrate around both edges of the substrate to the vaporization chambers. The ink feed channels have thereby been eliminated from the central portion of the substrate, and replaced by the ink feed channels at the edges of the substrate.
79 Citations
20 Claims
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1. A method of using a print cartridge in an inkjet printer, said print cartridge including a printhead having an array of ink nozzles aligned respectively over a plurality of firing chambers, said method comprising the steps of:
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moving said printhead with respect to a medium in said inkjet printer, said printhead including a substrate; providing electrical signals to said substrate to eject droplets of ink from said ink nozzles, said substrate including end portions with one or more columns of firing chambers located on said substrate between said end portions, with said firing chambers extending in a longitudinal direction along at least one outer edge of said substrate and spaced less than 1/500th of an inch apart in said longitudinal direction so as to eject said droplets of ink on said medium at a dots per inch resolution of less than 1/500th of an inch in said longitudinal direction as said printhead moves with respect to said medium in a direction perpendicular to said longitudinal direction; supplying ink through ink channel means connecting an ink reservoir with said firing chambers, said ink channel means for passing ink from an underside of said substrate around an outer edge of said substrate to said firing chambers; and supplying ink to said ink reservoir. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of achieving increased throughput using a high resolution inkjet printhead, comprising the following steps:
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providing an inkjet printhead having one or more columns of firing chambers located on a substrate, with the one or more columns extending together at least one-half inch in a longitudinal direction; fixedly attaching the printhead to a print cartridge, said print cartridge having a first interconnect for electrical connection to said printhead; installing said print cartridge into a carriage, said carriage having a second interconnect making electrical contact to said first interconnect; filling the firing chambers by moving ink from an underside of the substrate around an outer edge of the substrate into the firing chambers; moving the printhead relative to printing media while simultaneously selectively activating the firing chambers through the second interconnect and the first interconnect; and supplying ink to said printhead from an ink reservoir. - View Dependent Claims (20)
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Specification