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:
Sep. 11, 2007
Filed:
Jun. 28, 2005
Yoshinori Morimoto, Kanagawa, JP;
Tsuyoshi Tanabe, Kanagawa, JP;
Kenichi Saito, Kanagawa, JP;
Yoichi Suzuki, Kanagawa, JP;
Tadashi Masuda, Kanagawa, JP;
Kiyoshi Kondou, Kanagawa, JP;
Yoshinori Morimoto, Kanagawa, JP;
Tsuyoshi Tanabe, Kanagawa, JP;
Kenichi Saito, Kanagawa, JP;
Yoichi Suzuki, Kanagawa, JP;
Tadashi Masuda, Kanagawa, JP;
Kiyoshi Kondou, Kanagawa, JP;
Fuji Film Corp., Minami-Ashigara-shi, JP;
Abstract
A semiconductor laser driving circuit for driving a semiconductor laser as an exposure light source is used in an image recording apparatus for recording an image using a light beam from the laser. The light beam emitted from the laser is subjected to pulse modulation in correspondence with a command signal. The circuit includes an error amplifier for amplifying a difference between the command signal and a signal fed back from the laser to output an output signal, a diode and a resistor connected in series between an input terminal and an output terminal of the error amplifier and a driver for driving the laser based on the output signal.