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. 17, 2003
Filed:
Aug. 06, 2001
Eiko Yanagi, Ibaraki, JP;
Kazuo Nakano, Ibaraki, JP;
Riso Kagaku Corporation, Tokyo, JP;
Abstract
A printing drum ( ), to which a stencil sheet having subjected to a stencil making process is attached, can be attached to and removed from a printer main body ( ). A nonvolatile memory ( ) is provided in the printing drum. The number of print products is stored in the nonvolatile memory as “Information on the use” of the printing drum. A control device ( ) of the printer main body reads out “Information on the use” from the nonvolatile memory and stores them in a RAM ( ) when the printing drum is attached to the printer main body. Subsequently, when printing is performed, information on the number of print products is updated. When the printing drum is removed from the printer main body, “Information on the use” is updated and written into the nonvolatile memory.