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:
Oct. 09, 1990
Filed:
Jul. 07, 1989
Shigeo Nemoto, Ibaraki, JP;
Osamu Namikawa, Ibaraki, JP;
Kiyomi Tsuchiya, Ibaraki, JP;
Isao Nakajima, Ibaraki, JP;
Yasuo Kikuchi, Ibaraki, JP;
Tomio Sugaya, Ibaraki, JP;
Toshitaka Ogawa, Ibaraki, JP;
Sigenobu Katagiri, Ibaraki, JP;
Hitachi Koki Company, Ltd., Tokyo, JP;
Abstract
In a printing sheet conveying device in which a sheet bearing a toner image is passed through a heating roll and a pressure roll, and which has means for changing the right and left contact pressures of these rolls to correct the meandering movement of the sheet when conveyance of the sheet is started; in which when conveyance of the sheet is started, the contact pressure of the rolls is made higher on one of the right and left sides than on the other side, and in a predetermined period of time the contact pressures on both sides are made equal to each other.