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:
Mar. 02, 1999
Filed:
Jun. 16, 1997
Yoshinori Endo, Toyota, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
A laser printer includes a photosensitive drum on which a toner image corresponding to an electrostatic latent image is formed, and a transfer roller in confronting relation to the photosensitive roller for transferring the toner image to a sheet passing between the drum and the transfer roller. The printer also includes a fixing portion at which the toner image on the sheet is fixed. A control unit is connected to the transfer roller for controlling a transfer bias to be applied thereto. A panel switch is provided to select one of a printing mode and a lamination mode. If lamination mode is selected, the fixing portion heat-seals a pair of lamination sheet members. In the lamination mode, no bias voltage is applied to the transfer roller when the lamination sheet members are passing between the photosensitive drum and the transfer roller for preventing residual toner on the drum and the roller from being transferred onto the lamination sheet members.