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:
Mar. 16, 2004
Filed:
Jan. 19, 2000
Osamu Fujimoto, Yamatokoriyama, JP;
Syoichiro Yoshiura, Tenri, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An object of the invention is to allow secure identification of an image forming apparatus from an image on a recording medium on which the black image has been formed, thereby preventing leakage of secret information on the black image securely. A driving roller, a tensioning roller and a supporting member are supported to a frame so as to be movable in upward and downward directions, and a portion spacing mechanism moving an elevating rod in upward and downward directions by rotation of a motor is provided. At a time of the black-image forming process, the driving roller, the tensioning roller and the supporting member are moved downward by the portion spacing mechanism, a transfer conveying belt and transferring devices are spaced from photosensitive drums included in image forming stations for forming magenta and cyan images, and only the image forming process regarding a black image and an image of identification information obtained at image forming stations are made effective.