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:
Nov. 06, 2007
Filed:
Nov. 21, 2002
Hiroshi Shirotori, Nagano, JP;
Masahiko Moriyama, Nagano, JP;
Hiroshi Shirotori, Nagano, JP;
Masahiko Moriyama, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A printer () comprises a motor driver () for driving a carriage motor () and a paper feed motor (). The motor driver () has a thermal shutdown circuit (). If internal temperature T of the motor driver exceeds threshold value Ta, the thermal shutdown circuit shuts down the power of the motor driver. The motor driver has an internal temperature detection circuit (). If the internal temperature T exceeds threshold value Tb (<Ta) before thermal shutdown processing operates, the internal temperature detection circuit outputs a HW signal. A CPU () executes heat generation stop processing based on the HW signal and controls the motor driver to stop the carriage motor and the paper feed motor for a predetermined time.