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. 19, 2005
Filed:
Apr. 29, 2002
Kazunori Masuda, Saitama, JP;
Kazunori Masuda, Saitama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink jet recording apparatus, having a control circuit for controlling the driving of a recording head and a driver circuit for driving the recording head, includes an AC/DC converting circuit for converting an input AC voltage into a first DC voltage to then supply the first DC voltage to the driver circuit, and a voltage converting circuit for converting the first DC voltage into a second DC voltage to then supply the second DC voltage to the control circuit, and when the AC voltage is interrupted, for keeping the second DC voltage higher than a reset voltage of the control circuit until the first DC voltage drops to at least a guarantee voltage of the recording head.