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. 03, 1990
Filed:
Apr. 15, 1988
Noboru Miyaji, Osaka, JP;
Hiroshi Terada, Ikoma, JP;
Hayato Kamada, Osaka, JP;
Hidenori Kunishige, Kyoto, JP;
Abstract
A multicolor electrophotography apparatus for forming a color image on a rotatable photosensitive device shaped cylindrically and arranged to hold on its circumferential surface an electrostatic image optically formed by an exposing device. The apparatus includes a plurality of developing devices movably provided along the circumference of the photosensitive device for developing a plurality of different-color toner images overlapping each other. Each of the developing devices is selectively driven to take a developing position and a non-developing position, each of the developing devices being closed to photosensitive devices up to the developing position and being separated therefrom up to the non-developing position. When the exposing device is in the non-operated state, at least one of the developing devices takes the developing position and the other developing devices take the non-developing positions.