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:
Apr. 10, 2001
Filed:
Jan. 26, 1999
Noriyuki Kikuchi, Mishima, JP;
Hiroki Umezawa, Shizuoka-ken, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Abstract
Provided is an image formation apparatus for printing pixel dots on a recording paper at pitches smaller than intervals between ink jet-out ports by using an ink jet recording head while moving the recording head in a rotation shaft direction and feeding a recording paper around the drum so as to wind the drum. The ink jet recording head has a plurality of ink jet-out ports arranged in line and is movable in a rotation shaft direction of the drum. In the case where the image formation is completed by two rounds of the drum, the recording head is shifted at the time the first drum rotation is completed, by a moving step amount determined so as to correspond to a specific feature of a human visual system, thereby suppressing image formation that is non-uniform in concentration.