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:
Sep. 06, 2005
Filed:
Apr. 03, 2003
Yoshinori Hayashi, Soraku-gun, JP;
Kazunori Miyamoto, Kashihara, JP;
Kouichi Eto, Nara, JP;
Motohiro Hayashi, Nara, JP;
Takeshi Yamaguchi, Yamatokoriyama, JP;
Masakazu Suzuki, Yamatokoriyama, JP;
Yoshinori Hayashi, Soraku-gun, JP;
Kazunori Miyamoto, Kashihara, JP;
Kouichi Eto, Nara, JP;
Motohiro Hayashi, Nara, JP;
Takeshi Yamaguchi, Yamatokoriyama, JP;
Masakazu Suzuki, Yamatokoriyama, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An immediate printing type image forming apparatus is provided of which the warm-up time is sufficiently shortened without causing any trouble to occur in the execution of image reading processing and/or image forming processing. The image forming apparatus is configured to determine a time required to raise the current temperature of the surface of a heating roller in a fixing unit to a predetermined temperature and increase the duty ratio of a power waveform to be fed to each of a copy lamp and a motor driving a polygon mirror when the time required thus determined is shorter than each of a time required to increase the current light quantity of the copy lamp to a predetermined light quantity and a time required to raise the current rotational speed of the motor to a predetermined speed, thereby turning each of the copy lamp and the motor into respective predetermined condition before the elapse of the determined time required.