Patent ID: 6033051
Filing Date: 2000-03-07
Classification: B41J,G06K

Abstract:
An ink-jet printing apparatus for performing image printing by ejecting ink from a printing head having a plurality of nozzles for ejecting ink according to image data, said plurality of nozzles including a plurality of nozzle groups and said image data including ink ejection data, the apparatus comprising:recovering means for recovering ink ejection conditions of said nozzles in said printing head;counting means for counting a number of said ink ejection data in said image data for a predetermined amount of printing;storage means for storing numbers of said ink ejection data for the predetermined amount of printing and corresponding to each of the plurality of nozzle groups, the numbers having been counted by said counting means since a last operation of said recovering means; andcontrol means, connected to said recovering means and to said counting means, for operating said recovering means based upon the stored numbers of said ink ejection data corresponding to each nozzle group.