Multi-chamber ink jet print cartridge and method for manufacturing the same

摘要

A multi-chamber ink jet print cartridge is disclosed. The print cartridge includes a body and a plurality of ink chambers in the body for storing ink. The body of the print cartridge supports at least one printhead for dispensing ink from the plurality of ink chambers. Each of the plurality of ink chambers contains a reticulated polyurethane foam member. The foam member is empirically selected from a corresponding plurality of differently felted foam members. This plurality of foam members are of substantially the same shape and volume but of different densities. The selected foam member provides a pre-use backpressure in a corresponding ink chamber that is within a predetermined range. A method of selecting the foam member and a method of manufacturing the print cartridge are also disclosed.