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. 09, 1989
Filed:
Apr. 20, 1988
Applicant:
Inventors:
Hisao Iizuka, Ibaraki, JP;
Shigetoshi Hiratsuka, Kanagawa, JP;
Kiyohiko Tanno, Ibaraki, JP;
Teruji Satou, Ibaraki, JP;
Norihiro Ashizuka, Ibaraki, JP;
Assignees:
Hitachi Cable, Ltd., Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D / ; H01J / ;
U.S. Cl.
CPC ...
3461 / ; 250578 ; 358302 ;
Abstract
An optical printer head with a light emitting diode array comprises means for setting a distance between a light emitting surface of a light emitting diode array chip and a rod lens array. The means is provided with two reference position levels at which the light emitting diode array chip and the rod lens array are held. Therefore, there is no necessity for adjusting the distance between the light emitting diode array chip and the rod lens array so that a productivity thereof is much improved.