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. 28, 1994
Filed:
Jun. 26, 1990
Kimihiko Higashio, Osaka, JP;
Masazumi Ito, Osaka, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
An image forming apparatus includes a main body having an image forming portion and a first indicating device for indicating an accumulated number of copies the image forming portion, and an IC card detachable from the main body. The IC card includes a second indicating device for indicating the accumulated number of copies when the IC card is attached. The IC card further includes an arithmetic operation key for inputting a numerical calculation expression. A numerical calculation will be carried out in accordance with the arithmetic operation key. Finally, the IC card will have first and second states and the image forming apparatus will be switched between operable and inoperable conditions depending on the first and second states