Patent ID: 6454398
Filing Date: 2002-09-24
Classification: B41J

Abstract:
A method of charging ink into an ink cartridge, the ink cartridge including: an ink chamber for retaining liquid ink; a foam chamber maintained in fluid communication with said ink chamber through a communication hole, an ink supply port formed in a wall of said ink cartridge, and a porous body for absorbing ink being accommodated within said foam chamber and positioned to engage said ink supply port for delivery of ink thereto, to be adjacent said communication hole and to define a space in said foam chamber between said porous body and the wall bearing a through hole, said ink cartridge having at least two insertion through holes in a wall thereof, said wall defining at least one of said walls of said foam chamber;the method comprising the steps of: inserting an exhausting hollow needle to be connected to an exhauster through a first of said through holes into the space in said foam chamber; inserting an ink injecting hollow needle through a second of said plurality of through holes into said porous member so as to reach the vicinity of said communication hole; exhausting the interior of said cartridge; injecting ink through said ink injecting hollow needle after the exhausting operation has been completed; removing said hollow needles; and sealing said cartridge.