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. 21, 2002
Filed:
Mar. 06, 2001
Applicant:
Inventors:
Wataru Sasaki, Asaka, JP;
Tatsuo Saito, Omiya, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 1/00 ;
U.S. Cl.
CPC ...
G03B 1/00 ;
Abstract
An electric current is supplied from a power source to a motor for transporting a film through a switching element (a transistor). A regenerate current is generated from the motor when the current supply is cut, and the regenerate current is returned to the motor through a switching element (a first MOS FET). The switching elements are turned on and off according to the state of a second MOS FET. When the second MOS FET is turned on, the transistor is turned on and the first MOS FET is turned off, and this drives the motor. When the second MOS FET is turned off, the transistor is turned off and the first MOS FET is turned on, and this stops the motor.