초록 ▼

A bubble jet print cartridge assembly includes an ink supply housing having an ink reservoir and a fluid block component capping the ink reservoir and having ink passages extending from the reservoir to an ink outlet(s). A drop ejection chip comprising a substrate having resistive heater elements an

A bubble jet print cartridge assembly includes an ink supply housing having an ink reservoir and a fluid block component capping the ink reservoir and having ink passages extending from the reservoir to an ink outlet(s). A drop ejection chip comprising a substrate having resistive heater elements and electrode leads is attached to the outer side of the fluid block component with a peripheral chip edge(s) adjacent the ink outlet(s). A raised ink barrier fence formed on the outer surfaces of the fluid block and chip surrounds the heater elements and ink outlet(s). The fence has a height extending above the top surface of the supported chip and an orifice plate member is affixed at its periphery to the top of the barrier fence so as to enclose the region surrounded by said barrier fence.

대표청구항 ▼

A bubble jet print cartridge of the normal drop ejection kind comprising: (a) an ink housing including an enclosed ink reservoir region and an ink supply and distribution wall member having (i) top and bottom surfaces and (ii) ink passage means extendng from a central region of said bottom wall surf

A bubble jet print cartridge of the normal drop ejection kind comprising: (a) an ink housing including an enclosed ink reservoir region and an ink supply and distribution wall member having (i) top and bottom surfaces and (ii) ink passage means extendng from a central region of said bottom wall surface, covering said reservoir region, to an outlet(s) on the outer periphery of said top surface of said wall member; (b) a drop ejection chip comprising a continuous substrate having resistive heater elements and electrode leads supported on an upper surface thereof, the lower surface of said substrate being attached to said wall member top surface with a peripheral chip edge(s) adjacent, but not covering, said ink outlets(s); (c) a raised ink barrier fence formed on the upper surface of said wall member and said upper chip surface to surround said heater elements of said chip and said ink outlet(s), said fence having a height extending above the top surface of said supported chip; and (d) an orifice plate member affixed at its periphery to the top of said barrier fence.