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:
Jan. 03, 1989
Filed:
May. 12, 1986
Satoru Maeno, Mie, JP;
Kenji Inoue, Ise, JP;
Masaaki Tanaka, Yokohama, JP;
Akira Ogita, Sagamihara, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Shinko Electric Co., Ltd., Tokyo, JP;
Abstract
A color copying machine contains a scanning unit driven by a motor for applying a color scanning beam onto a manuscript, a photoconductive drum operable to rotate for being exposed to the scanning beam to form on a peripheral surface thereof a latent image of the manuscript. The color copying machine further contains a device for applying a toner to the latent image to form a toner image, and a transfer drum for holding a record sheet onto which the toner image on the photoconductive drum is transferred. A main controller calculates data representative of a speed of the motor in accordance with a magnification rate of the copy image to be formed on the record sheet to the image on the manuscript, and outputs a pulse signal whose pulse rate is proportional to the calculated speed data. The main controller outputs the pulse signal to a controller which drives the motor at a speed determined by the pulse rate of the pulse signal. Thus, the speed of the scanning unit is determined in accordance with the magnification rate.