Pagewidth inkjet printhead incorporating power and data transmission circuitry
View Patent ↗A pagewidth inkjet printhead includes an elongate ink distribution assembly connectable to an ink supply. A printhead chip is mounted on the ink distribution assembly to receive ink from the ink distribution assembly. A cover is fast with the ink distribution assembly. Power and data transmission circuitry is interposed between the cover and the ink distribution assembly and connected to the printhead chip to provide the printhead chip with power and data signals.
1. A pagewidth inkjet printhead which comprises
an elongate ink distribution assembly connectable to an ink supply;
a printhead chip that is mounted on the ink distribution assembly to receive ink from the ink distribution assembly;
a cover fast with the ink distribution assembly; and
power and data transmission circuitry interposed between the cover and the ink distribution assembly and connected to the printhead chip to provide the printhead chip with power and data signals.
2. A pagewidth inkjet printhead as claimed in claim 1 , in which the ink distribution assembly comprises an ink distribution manifold that defines an aperture to accommodate the printhead chip and a plurality of slots that open into the aperture.
3. A pagewidth inkjet printhead as claimed in claim 1 , in which the power and data transmission circuitry includes a pair of busbars and a tape automated bonding (TAB) strip interconnecting the busbars and the printhead chip.
4. A pagewidth inkjet printhead as claimed in claim 3 , in which the busbars and the housing have complementary locating formations that engage each other to position the busbars correctly with respect to the housing.