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. 22, 1976
Filed:
Mar. 10, 1975
Raghulinga R Thettu, Webster, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
Apparatus of the type which fuses toner images onto support material by heat and pressure. A heated fuser roll includes a cylindrical member made of quartz which transmits radiant energy from a lamp source located on the interior of the cylindrical member. The cylindrical member is covered with a layer made of elastomeric material which also transmits radiant energy. A first reflector member is positioned adjacent the lamp source for focusing the radiant energy along a heat transfer zone segment of the elastomeric layer. Positioned adjacent to the heat transfer zone is a second reflector member to reflect the energy back to the surface of the layer. Tack and detack corotrons tack sheets bearing powder images to be fused to the surface of the elastomeric layer to selectively heat the powder images. A pressure roll forms a nip with the layer at the exit of the heat transfer zone to apply heat and pressure thereat. A blower controls the exit temperature of the exit of the nip to effect fusing of the images without objectionable background.