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. 14, 1989
Filed:
Apr. 22, 1988
Keiji Kusumoto, Osaka, JP;
Kenzo Nagata, Osaka, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
When paper jam occurs during copy operation, the paper feed opening (which is one of the paper feed openings 1a to 1d) in which the paper jam occurs is determined, and thus, the number of occurrences of paper jam is counted for each of the paper feed openings. When the number of occurred times of paper jam exceeds a predetermined number, the paper feed opening concerned is forbidden to be used until maintenance or other repair work is completed. If the preferred feed opening (1a) assigned the first priority is forbidden to be used, another preferential feed opening is selected based on the numbers of occurred times of paper jam in the other paper feed openings (1b to 1d). On the other hand, when paper jam occurs, a paper jam occurrence ratio is calculated for each paper feed opening based on the number of sheets and the number of occurred times of paper jam counted. Based on the result of the calculation, control operation for selecting the paper feed openings (1a to 1d) including the preferential one is performed.