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:
Oct. 09, 2007
Filed:
May. 11, 2004
Keiji Ohara, Kanagawa, JP;
Keiji Ohara, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A power management control method of a printing apparatus, which can reduce power consumption of the printing apparatus during a sleep mode and maintain an excellent state of the printing apparatus in a sleep mode, and enables high-quality printing when the printing apparatus returns from the sleep mode to a normal mode. In the printing apparatus employing the present invention which operates in a sleep mode of low power consumption or a normal mode of high power consumption, an event that causes the printing apparatus to shift from the sleep mode to the normal mode is detected, the printing apparatus is shifted from the sleep mode to the normal mode based on the detection result, then it is determined whether or not the detected event is a maintenance operation executed periodically by the printing apparatus to maintain an excellent printing state, execution of the maintenance operation is controlled based on the determination result, and the printing apparatus is returned from the normal mode to the sleep mode.