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:
Jul. 15, 1997
Filed:
May. 11, 1995
Akihiko Taniguchi, Yamatokouriyama, JP;
Masashi Toyoda, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
In an image forming apparatus provided with a cooling fan for cooling an original table glass, a controller measures a cooling time from the end of a previous copying operation to the start of a current copying operation. An operating condition determining section estimates a residual amount of heat energy based on the measured time and the generated amount of heat energy at the pervious copying operation. An amount of heat energy to be generated at the current image forming is added to the thus estimated residual amount of heat energy. Based on the sum of the heat energy, actual temperature-rise characteristics are calculated. The fan is driven at a rotating rate for an operating time in accordance with the thus calculated temperature-rise characteristics.