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:
Jun. 26, 1990
Filed:
May. 02, 1989
Hideto Kohtani, Yokohama, JP;
Tadashi Suzuki, Yokohama, JP;
Naoyuki Ohki, Tokyo, JP;
Isamu Sato, Yokohama, JP;
Takahiro Ushiro, Yokohama, JP;
Masahiro Tomosada, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes a developing unit storage device including a plurality of storage sections capable of storing developing units and a first detection unit for detecting the presence/absence and types of the developing units in the plurality of storage sections, an image forming device which includes a second detection unit for detecting the presence/absence and a type of a developing unit in the image forming device, and can form an image on a recording material using the developing unit conveyed from the developing unit storage device, a communication device for causing the developing unit storage device and the image forming device to exchange data associated with the presence/absence and types of the developing units, a first display device for displaying the presence/absence and types of the developing units on the basis of a detection result by the first detection unit and the data transmitted from the image forming device by the communication device, and a second display device for displaying the presence/absence and types of the developing units on the basis of a detection result by the second detection unit and the data transmitted from the developing unit storage device by the communication device.