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:
Jun. 01, 1999
Filed:
Mar. 31, 1994
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
There is provided an ink jet recording apparatus such as a bubble jet recording apparatus, comprising: an ink jet recording head in which a plurality of groups each consisting of a plurality of emission ports which are simultaneously driven are continuously arranged; a detector to detect an edge of an input image; and a second driver for sequentially changing the driving order of the groups or sequentially driving the groups which are not neighboring in accordance with the result of the edge detection by the detector. The recording head causes a volume change by an action of a heat energy which is generated from a recording element such as an electrothermal converting element or a thermal resistor element by supplying a pulse-shaped current thereto, thereby emitting an ink droplet from each opening. The recording apparatus uses a plurality of recording elements which are divided into a plurality of blocks and are driven at different timings for every block.