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. 21, 1989
Filed:
Sep. 26, 1988
Masashi Sakamoto, Osaka, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
An electrophotographic copying machine which comprises a rotatable photoreceptor, a developing devices including a first removable developing device and a second developing device provided at downstream of the first removable developing device with respect the rotation of the photoreceptor, a first seal member arranged at the first developing device for preventing toner from scattering, a second seal member which is arranged at the second developing device for preventing toner from scattering and is movable to contact with the photoreceptor, a first moving member for moving the second seal member from a first state to be out of contact with the photoreceptor to a second state to be in contact therewith upon the removal of the first developing device, and a second moving member for moving the second seal member from the second state to the first state upon the attachment of the first developing device.