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:
May. 30, 2006
Filed:
Jan. 29, 2004
Yosuke Ushigome, Tokyo, JP;
Yosuke Ushigome, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A battery residual capacity detection method capable of accurately detecting a battery residual capacity while minimizing reduction of throughput of a printing apparatus. In a printing apparatus, to which the method is applied, operable with at least a battery power source, during printing on a printing medium by reciprocate-scanning a printhead mounted on the printing apparatus, a battery voltage is detected, thereby a battery residual capacity is detected. It is determined whether or not the detected battery residual capacity is equal to or less than a predetermined threshold value. In accordance with the result of determination, driving of a carriage motor to reciprocate-scan the printhead and that of a conveyance motor to convey the printing medium are controlled so as to provide a time zone where loads on the carriage motor and the conveyance motor do not overlap, and the battery residual capacity is detected in the time zone where the loads do not overlap.