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:
Jul. 11, 1989
Filed:
Feb. 11, 1988
Applicant:
Inventors:
Goro Oda, Kanagawa, JP;
Takashi Shiraishi, Kanagawa, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
346160 ; 350-68 ;
Abstract
An image formation device for forming an electrostatic latent image on a photosensitive body using a semiconductor laser to generate a laser beam, a collimating lens for focusing the laser beam into a parallel beam, a collimating lens unit which is rotatable and arranged to flatten the laser beam from the collimating lens, a polygonal mirror for scanning the laser beam by means of reflecting surfaces, and a first and a second scanning lens for cooperatively scanning the optical path for moving the beam from the polygonal mirror onto the photosensitive body at a constant speed.