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. 02, 1989
Filed:
Sep. 30, 1987
Mamoru Kato, Tokyo, JP;
Kouji Maekawa, Kyoto, JP;
Kenichi Matsunobu, Neyagawa, JP;
Naoka Fujie, Sakai, JP;
Hiroyuki Hazama, Neyagawa, JP;
Mita Industrial Co., Ltd., Osaka, JP;
Abstract
A two-component type developer comprising an electroscopic fixable toner containing, as the coloring pigment, carbon black having a coloring power of 100 to 120 and a magnetic carrier is sued for developing electrostatic latent images formed on a photosensitive plate in correspondence to an imitation original and an original, and the image density of the toner image corresponding to the imitation original is detected and the toner concentration in the developer is controlled based on the detected image density. According to this development process, the toner concentration in the developer can be maintained within an optimum range based on the optical density of the toner image formed on the photosensitive plate in correspondence to the imitation original.