Pagewidth printhead assembly cartridge with micro-capillary feed
View Patent ↗A cartridge for a pagewidth printhead assembly is provided. The cartridge includes a body assembly having a lid and main body operatively defining a plurality of fluid chambers when assembled, each chamber comprising a stack of polymer layers with a micro-capillary array of channels formed therein to form an absorbent assembly. The cartridge includes a plurality of printhead integrated circuits (IC) each having a plurality of micro-electromechanical nozzle arrangements for ejecting printing fluid onto a printing medium, in use. The cartridge also includes a fluid distribution member operatively arranging each chamber in fluid communication with each IC.
1. A cartridge for a pagewidth printhead assembly, said cartridge comprising:
a body assembly having a lid and main body operatively defining a plurality of fluid chambers when assembled, each chamber comprising a stack of polymer layers with a micro-capillary array of channels formed therein to form an absorbent assembly;
a plurality of printhead integrated circuits (IC) each having a plurality of micro-electromechanical nozzle arrangements for ejecting printing fluid onto a printing medium, in use; and
a fluid distribution member operatively arranged to bring each chamber into fluid communication with each respective IC.
2. The cartridge of claim 1 , wherein each fluid chamber defines an outlet having a filter to allow ink to flow from the absorbent assembly through the outlet whilst preventing air entering said outlet.
3. The cartridge of claim 1 , wherein the polymer of the stack is selected from the group consisting of polycarbonate, acrylic, polysulfone, polystyrene, fluoropolymer, cyclic olefin polymer, and cyclic olefin copolymer.
4. The cartridge of claim 1 , wherein each channel of the array has an average diameter of about 10 microns or less.
5. The cartridge of claim 1 , wherein the absorbent assembly is configured to create a back pressure preventing the fluid from freely flowing from the respective chamber and out the nozzles.
6. The cartridge of claim 1 , wherein each IC is attached to the fluid distribution member by means of a laminate polymer film.
7. The cartridge of claim 5 , wherein the laminate polymer film is a thermoplastic film.
8. The cartridge of claim 5 , wherein the laminate polymer film is a thermosetting film.