Patent ID: 6398332
Filing Date: 2002-06-04
Classification: B41J

Abstract:
A method of controlling the firing of nozzles on rows for respective ink channels in a printhead the method including:loading print data to respective channel shift registers on respective segments to the printhead; transferring print data to nozzle enable bits provided one per nozzle; and firing the nozzles in respective channels in time independent manner using separate timing generators in each channel wherein nozzles in respective channels are similarly grouped and the nozzles within groups are fired successively; such that respective rows of nozzles are organized in repeated pods of nozzles along the length of each row of nozzles, the nozzles in a pod being fired one after the other along the row; successive pods of respective channels are linked as a chromapod wherein the one after the other firing of nozzles in each channel is in step along the row of nozzles in the respective pods; and blocks of chromapods are operated as a firegroup, the firegroups firing together.