The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 2004
Filed:
Feb. 04, 2003
Toshiharu Inui, Kanagawa, JP;
Masaya Uetsuki, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
To enable an ink jet printing apparatus to produce high quality images at all times from the initial stage of use until the end of its service life, the present invention provides an ink jet printing method for printing an image on a print medium by using a print head, in which the print head can eject ink supplied from an ink tank. The ink jet printing method includes an ink consumption detection step for detecting an amount of ink consumed in the ink tank, an ejection number detection step for detecting the number of ink ejections from the print head, an ink droplet volume calculation step for calculating an ink droplet volume based on the number of ink ejections from the print head and the ink consumption, and a control step for changing processing associated with a printing operation according to the ink droplet volume calculated by the calculation step.