Patent ID: 6443567
Filing Date: 2002-09-03
Classification: B41J

Abstract:
A liquid ejection head cartridge comprising:a recording head portion for ejecting liquid; a first liquid supply portion for supplying the liquid to said recording head portion; a negative pressure producing member accommodating container accommodating a negative pressure producing member for retaining liquid therein, said negative pressure producing member accommodating chamber being provided with an air vent for fluid communication with ambience and a second liquid supply portion for supplying the liquid therefrom; a liquid reservoir having a liquid reservoir portion for containing liquid and constituting a substantially sealed space except for a communication portion through which said negative pressure producing member accommodating container and said liquid reservoir are in fluid communication with each other; a container holder for holding said liquid reservoir and said negative pressure producing member accommodating container, said container holder having a liquid supply path to the recording head from said second liquid supply portion; wherein said recording head portion, said negative pressure producing member accommodating container, and said liquid reservoir, are each independently separable from said container holder; and wherein an order of easiness of separation of said recording head portion, said negative pressure producing member accommodating container, and said liquid reservoir, is equal to an order of shortness of lives of said recording head portion, said negative pressure producing member accommodating container, and said liquid reservoir, and such one of them as has a shortest life is most easily separable.