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:
Dec. 01, 1992
Filed:
Jul. 23, 1990
Fumiaki Hiraike, Hachioji, JP;
Hiroyuki Honda, Hachioji, JP;
Konica Corporation, , JP;
Abstract
A clamshell-type electrophotographic image forming apparatus in which a drum cartridge by which a photosensitive drum is supported is removably accommodated in a clamshell-type opening/closing unit provided on a base plate so as to be opened and closed. The position of a drum shaft of the photosensitive drum is limited by a positioning device which operates according to the opening or closing of the clamshell-type opening/closing unit, or to the accommodating or removal of the drum cartridge. The drum cartridge is permitted to be attached or detached in a direction at right angles with the axial direction of a support shaft about which a clamshell opening/closing unit turns and the developing cartridge is permitted to be attached or detached in a direction in parallel with the axial direction of the support shaft. A drive gear of the developing unit is opposed to a drive gear of the side of a main body, and the drum cartridge that is attached causes the developing unit to be pushed, such that the drive gear of the developing unit meshes with the drive gear of the side of the main body. In addition, the opening or closing of a toner feeding device operates according to the opening or closing of the clamshell-type opening/closing unit.