Patent ID: 6234619
Filing Date: 2001-05-22
Classification: B41J

Abstract:
An ink cartridge used for an ink jet printer in which an ink is discharged from a nozzle of a printing head and made to fly and adhere onto a paper, comprising:an ink storage chamber for storing the ink directly;a printing head connecting portion disposed on a bottom side of said ink storage chamber for receiving the printer head; andan ink collector disposed on the bottom side of said ink storage chamber and alongside on an upper face of said printing head connecting portion, said ink collector being disposed in a horizontal direction;said ink collector being provided with a plurality of vertical plate-like blade portions arranged in parallel in the horizontal direction so as to form ink collector spaced therebetween;said blade portions being provided with communicating notches in a line for communicating adjoining said ink collector spaces so that the communicating notches form an air/ink moving groove extending in a lateral direction; andone end of said air/ink moving groove being communicated with an air intake, and other end of said air/ink moving groove being communicated with said ink storage chamber;wherein said air/ink moving groove moves the ink from said ink storage chamber to said ink collector spaces, when a pressure in said ink storage chamber becomes too high; andsaid air/ink moving groove moves the ink from said ink collector spaces to said ink storage chamber, when the pressure in said ink storage chamber becomes too low, or moves air from said air intake to said ink storage chamber.