Inkjet printhead architecture for high speed ink firing chamber refill
First Claim
1. An inkjet printing system comprising:
- an ink reservoir;
a substrate having a plurality of ink firing chambers with an ink firing element in each ink firing chamber along a top surface of said substrate, said substrate having a first outer edge along a periphery of said substrate, said first outer edge being in close proximity to the ink firing elements and substantially parallel to said ink firing elements;
an ink channel connecting said reservoir with said ink firing chambers, said ink channel including a primary channel connected at a first end with said reservoir and at a second end to a secondary channel, said primary channel allowing ink to flow from said ink reservoir, around said first outer edge of said substrate, and to said secondary channel along said top surface of said substrate; and
a separate inlet passage for each firing chamber, said separate inlet passage being completely defined within the outer boundaries of said substrate, said separate inlet passage for each ink firing chamber connecting said secondary channel with said ink firing chamber for allowing refill of said ink firing chamber.
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Accused Products
Abstract
Disclosed is an inkjet print cartridge having an ink reservoir; a substrate having a plurality of individual ink firing chambers with an ink firing element in each chamber along a top surface of the substrate and having a first outer edge along a periphery of substrate; the first outer edge being in close proximity to the ink firing chambers. The ink firing chambers are arranged in a first chamber array and a second chamber array and with the firing chambers spaced so as to provide 600 dots per inch printing. An ink channel connects the reservoir with the ink firing chambers, the channel including a primary channel connected at a first end with the reservoir and at a second end to a secondary channel; the primary channel allowing ink to flow from the ink reservoir, around the first outer edge of the substrate to the secondary channel along the top surface of the substrate so as to be proximate to the ink firing chambers. A separate inlet passage for each firing chamber connecting the secondary channel with the firing chamber for allowing high frequency refill of the firing chamber. A group of the firing chambers in adjacent relationship forming a primitive in which only one firing chamber in the primitive is activated at a time. First circuit member on the substrate connects to the firing elements and a second circuit member on the cartridge connects to the first circuit member, for transmitting firing signals to the ink firing elements at a frequency greater than 9 kHz.
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Citations
22 Claims
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1. An inkjet printing system comprising:
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an ink reservoir; a substrate having a plurality of ink firing chambers with an ink firing element in each ink firing chamber along a top surface of said substrate, said substrate having a first outer edge along a periphery of said substrate, said first outer edge being in close proximity to the ink firing elements and substantially parallel to said ink firing elements; an ink channel connecting said reservoir with said ink firing chambers, said ink channel including a primary channel connected at a first end with said reservoir and at a second end to a secondary channel, said primary channel allowing ink to flow from said ink reservoir, around said first outer edge of said substrate, and to said secondary channel along said top surface of said substrate; and a separate inlet passage for each firing chamber, said separate inlet passage being completely defined within the outer boundaries of said substrate, said separate inlet passage for each ink firing chamber connecting said secondary channel with said ink firing chamber for allowing refill of said ink firing chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An inkier printing system comprising:
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an ink reservoir; a substrate having a plurality of ink firing chambers with an ink firing element in each ink firing chamber along a top surface of said substrate, said substrate having a first outer edge along a periphery of said substrate, said first outer edge being in close proximity to the ink firing elements and substantially parallel to said ink firing elements; a nozzle member having a plurality of ink orifices formed therein, said nozzle member being positioned to overlie said top surface of said substrate; an ink channel connecting said reservoir with said ink firing chambers, said ink channel including a primary channel connected at a first end with said reservoir and at a second end to a secondary channel, said primary channel allowing ink to flow from said ink reservoir, around said first outer edge of said substrate, and to said secondary channel along said top surface of said substrate; and a separate inlet passage for each ink firing chamber defined by a barrier layer on said top surface of said substrate located completely within the outer boundaries of said substrate, said separate inlet passage for each ink firing chamber connecting said secondary channel with said ink firing chamber for allowing refill of said ink firing chamber. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification