Patent ID: 6312112
Filing Date: 2001-11-06
Classification: B41J

Abstract:
A printing system comprising:a printhead, said printhead comprising:a substrate;a plurality of ink ejection elements formed on said substrate, each of said ink ejection elements having a front edge and a first side edge adjacent to said front edge;a plurality of firing chambers, each firing chamber substantially surrounding an associated ink ejection element;two ink channels leading to each firing chamber, said ink channels receiving ink from an ink reservoir, said two ink channels being asymmetrical with respect to an associated ink ejection element to create an asymmetrical ink flow into said firing chamber, a first of said ink channels having a substantially straight path and delivering a majority of ink flowing therein to said associated firing chamber over said front edge of said ink ejection element, a second of said ink channels delivering a majority of ink flowing therein to said associated firing chamber over said first side edge; anda barrier island separating each of said two ink channels, said barrier island being asymmetrical with respect to said associated ink ejection element,wherein said second ink channel is substantially parallel to said first ink channel until said second ink channel has extended beyond said barrier island, said second ink channel then curving toward said first side edge of said associated ink ejection element.