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:
Jan. 27, 2009
Filed:
Jun. 02, 2006
Hiroyuki Saito, Kanagawa, JP;
Nobutsune Kobayashi, Kanagawa, JP;
Hiroyuki Saito, Kanagawa, JP;
Nobutsune Kobayashi, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a printing apparatus which prints using a printhead, a printing controller for feedback-controlling driving of a motor includes a control information generation unit which generates control information for a driving torque of the motor on the basis of a first driving pattern, a comparison unit which compares the control information and a threshold for determining an overload on driving of the motor, and a setting unit which sets a second driving pattern for changing a load on driving of the motor by the control information, instead of the first driving pattern, on the basis of the comparison result of the comparison unit. Control of the motor is switched in accordance with the load state.