초록 ▼

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, on

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.

대표청구항 ▼

[ We claim as our invention:] [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

[ We claim as our invention:] [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; andsupplying ink to said ink reservoir.