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. 15, 1990
Filed:
Jul. 28, 1989
Applicant:
Inventors:
Mineo Ohyama, Takeda, Katsuta-shi, Ibaraki 312, JP;
Shigenobu Katagiri, Takeda, Katsuta-shi, Ibaraki 312, JP;
Hiroomi Kozawa, Takeda, Katsuta-shi, Ibaraki 312, JP;
Koutaro Yamada, Takeda, Katsuta-shi, Ibaraki 312, JP;
Assignee:
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
346160 ; 3461601 ; 346154 ;
Abstract
In an electrophotographic printer, a photoconductive drum is scanned with a light spot provided by scanning light sources to electrostatically form a latent image with dot on it. The light sources comprise at least two LED print heads different in linear density are provided to print out data different in linear density on one and the same page.