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:
Feb. 01, 1994
Filed:
Nov. 23, 1992
Applicant:
Inventors:
Kimiyoshi Hayashi, Soka, JP;
Masanori Sakai, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358296 ; 361752 ; 361816 ;
Abstract
This invention relates to an image forming apparatus for forming an image using a pulse modulated signal based on an input image signal. A circuit for pulse-modulating an image signal and a circuit for driving a recording element are integrally formed on a single circuit board, or a circuit means for isolating a signal level of another circuit, e.g., a circuit for digitally processing an image signal or a circuit for generating a control signal from that of the pulse modulation circuit is arranged, so that a pulse modulation signal to be applied to the recording element is stabilized, and a high-frequency operation is allowed.