Inkjet print cartridge

摘要

An ink delivery system for an array of nozzle orifices (17) in a print cartridge (10) comprises an ink reservoir (12), a substrate (28) having a plurality of individual ink firing chambers (130) with an ink firing element (70) in each chamber and an ink channel connecting the reservoir to the ink firing chambers. The channel includes a primary channel (52) connected at a first end to the reservoir and at a second end to a secondary channel. A separate inlet passage (132) for each firing chamber connects the secondary channel to the firing chamber for allowing high frequency refill of the firing chambers. A group of firing chambers in adjacent relationship form a primitive (P1-P14) in which only one firing chambers is activated at a time. A first circuit (78) on the substrate is connected to the firing elements; while a second circuit (36) on the cartridge is connected to the first circuit for transmitting firing signals to the ink firing elements at a frequency greater than 9 kHz. <IMAGE>