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:
Jul. 21, 1992
Filed:
Feb. 06, 1990
Atsushi Shiozaki, Kawasaki, JP;
Hiroto Matsuda, Ebina, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A serial type liquid jet recording apparatus includes a recording head having an array of plural liquid ejecting devices arranged in a column direction to eject droplets of recording liquid on a recording material; an end portion driving circuit for driving one or more end liquid ejecting devices of the plural ejecting devices; a central portion driving circuit for driving the remaining liquid jet ejecting devices; and an adjusting device for adjusting a quantity of the droplet only from the end ejecting devices by changing a voltage level or a pulse width of a driving voltage of the end portion driving circuit independently of the central portion driving circuit.