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. 10, 1985
Filed:
Jun. 20, 1984
Hermann Moser, Darmstadt, DE;
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Abstract
Disclosed is a roll-fusing apparatus comprising an internally heated fusing roller and a pressure roller including a coated roller core which has a cylindrical inner surface and an outer surface which is extended to give a saw-toothed or scalloped, repeatedly bent configuration. The coating of the roller core comprises a silicone elastomer which has a cylindrical outer configuration, and the inside of the coating is firmly bonded to the shaped outer surface of the roller core, such that the thickness of the coating varies over the length of the roller. In the roller gap of the roll-fusing apparatus, a passage speed profile is generated which shows a minimum in each of the two external zones of the pressure roller and in the middle of the roller and the maxima of which are located in the boundary surfaces between the central zone and the left-hand and right-hand external zones.