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. 06, 1986
Filed:
Mar. 15, 1985
Applicant:
Inventors:
Assignee:
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355-8 ; 355 / ; 318696 ;
Abstract
An optical system drive device for an image formation apparatus has a drive mechanism for reciprocally driving an exposure unit, and a pulse motor for supplying pulses to the drive mechanism. The pulses to be supplied to the pulse motor are stored in advance in a ROM. In accordance with either document size or required equal size, reduced scale or enlarged copying mode, a microprocessor reads out a predetermined control pulse from the ROM and applies it to the pulse motor, thereby controlling acceleration, constant velocity drive and deceleration of the pulse motor.