Patent ID: 6325499
Filing Date: 2001-12-04
Classification: B41J

Abstract:
An ink cartridge for a printer comprising:a housing including a bottom wall having a flat inner face;an opening formed through the bottom wall with an entry end in said flat inner face;a plurality of grooves formed on an area of said flat inner face around said entry end of said opening, the plurality of grooves being open to said entry end of said opening and extending radially from said opening in a plurality of directions;a sieve mounted on said flat inner face and completely overlying said plurality of grooves and said opening, the sieve having a sieve pore size of between 1 .mu.m and 10 .mu.m; and,a porous ink storing body in the housing, said porous body being held in contact with said sieve and having a pore size larger than said sieve pore size, wherein an active area of said sieve is increased by said plurality of grooves formed on said area of said flat inner face thereby reducing ink flow resistance through the sieve.