Patent ID: 6193351
Filing Date: 2001-02-27
Classification: B41J

Abstract:
An ink-jet printing method for performing printing by ejecting ink toward a printing medium by employing a printing head having ink passages for ejecting ink through ejection openings and a common ink chamber supplying said ink into said ink passages, comprising the steps of:detecting a peripheral temperature of said printing head;detecting a variation of a temperature within said printing head;counting a number of times of ejection of said ink;performing a suction recovery operation for sucking and discharging at least said ink from said printing head through said ejection openings;setting a timing for a next suction recovery operation based on the peripheral temperature of said printing head, the temperature variation within said printing head and said number of times of ejection of said ink;correcting said number of times of ejection of said ink for setting the timing for the next suction recovery operation based on a difference between said peripheral temperature of said printing head and said temperature variation within said printing head;performing preparatory ejection for ejecting said ink through said ejection openings toward an object other than said printing medium; andsetting a timing for a next preparatory ejection based on said peripheral temperature of said printing head and said temperature variation within said printing head.