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. 08, 1999
Filed:
Dec. 22, 1997
Ikuya Hotta, Tokyo, JP;
Masaru Ushio, Tokyo, JP;
Junji Sato, Tokyo, JP;
Yoshinao Kitahara, Tokyo, JP;
Konica Corporation, Tokyo, JP;
Abstract
An apparatus for forming an image on a recording sheet comprises a jam data holder storing a predetermined number of jam occurrence data arranged in time sequence, whereby when the jam data holder receives the newest jam occurrence data, the jam data holder adds the newest jam occurrence data into the predetermined number of jam occurrence data and eliminates the oldest jam occurrence data from the predetermined number of jam occurrence data; a calculator for calculating jam occurrence frequency when the jam data holder receives the newest jam occurrence data, wherein the calculator references the jam occurrence data from the predetermined number of jam occurrence data stored in the jam data holder, calculates a number N of jam occurrences, the total sheet number T1 when the oldest jam occurrence was detected and the total sheet number T2 when the newest jam occurrence was detected and calculates a jam occurrence frequency based on the difference between the total sheet number T2 and the total sheet number T1 and the number N of jam occurrence; and a signal generator to output a jam frequently-occurring signal when the number of jam occurrence is larger than a first predetermined number and the jam occurrence frequency is larger than a second predetermined number.