Patent ID: 6382784
Filing Date: 2002-05-07
Classification: B41J

Abstract:
An inkjet printing system of the type having a replaceable ink supply for providing ink to a printhead, the inkjet printing system comprising:a semipermanent inkjet printhead having a fluid input for receiving ink and an ejection portion for selectively depositing ink in response to control signals, the inkjet printhead capable of printing a plurality of ink volumes; a replaceable ink supply for storing one of the plurality of ink volumes, the replaceable ink supply configured for providing ink to the inkjet printhead; and an accumulator portion in fluid communication with the inkjet printhead and the replaceable ink supply, the accumulator portion compensates for air introduced into the inkjet printhead to maintain the printhead pressure range within an operating range allowing the printhead to print the plurality of ink volumes without purging air from the inkjet printhead; and wherein the semipermanent printhead is capable of printing over the life of at least five ink supplies.