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:
Nov. 19, 1991
Filed:
Feb. 01, 1989
Kiyoshi Emori, Osaka, JP;
Hiroshi Maekawa, Osaka, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
A printer apparatus is connected to a host for forming images which includes a photosensitive member, an image former for forming an electrostatic latent image on the surface of the photosensitive member, and a plurality of developing devices respectively containing different colors of developer, each of which is driven independent of one another and selectively driven for developing the electrostatic latent image formed on the surface of the photosensitive member. The apparatus also includes an image transferor for transferring the developed image to a record medium, and a controller for controlling the driving of the developing devices in a plurality of different modes during the development of the electrostatic latent image. Only one of the developing devices is driven to develop a first part of the electrostatic latent image in a first mode, at least two developing devices are driven to develope a second part of the electrostatic latent image in a second mode, and all of the developing devices are maintained deenergized to prevent the development of a third part of the electrostatic latent image in a third mode. The controller develops the electrostatic latent image by selectively driving the developing devices using at least two of the three modes.