Patent ID: 6736497
Filing Date: 2004-05-18
Classification: B41J

Abstract:
An ink cartridge comprising:an ink reservoir storing ink and comprising a base plate, a cover plate movable toward the base plate, and at least one flexible bag between the base plate and the cover plate; a housing having an opening that is combined with the base plate and covers the ink reservoir, and having a slit formed on a side of the housing; a panel-shaped spring disposed between the housing and the cover plate and comprising a housing fixing portion fixed to the housing and a plate fixing portion fixed to the cover plate; a strip having one portion that is combined with the panel-shaped spring to move when the panel-shaped spring is deformed, and another portion that is exposed to an outside of the housing through the slit of the housing, and an indicator pattern formed on a surface of the exposed portion of the strip; and a strip cover covering the exposed portion of the strip, and in which an indicator window is formed such that a user observes the indicator pattern as the strip moves.