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:
Jan. 16, 1990
Filed:
Sep. 30, 1988
Leo A Beaudet, Milford, MA (US);
Dennison Manufacturing Company, Framingham, MA (US);
Abstract
Electrostatic transfer imaging in which a latent electrostatic image is formed on a dielectric image roller, toned, and transferred to an image receptor medium. The dielectric roller contacts a transfer roller, and receptor sheets are fed between the two to receive toner images. Image transfer is effected with simultaneous fusing using high pressure between the rollers, which are skewed for enhanced efficiency of toner transfer. The rollers are skewed, preferably at an angle in the range 0.5 degree to 1.5 degree. Receptor sheets adhere to the surface of the transfer roller in preference to that of the image roller, thereby creating a relative motion between the dielectric surface and receptor sheet. This surface motion differential considerably improves the efficiency of toner transfer from the image roller to the receptor sheet, thereby reducing residual toner on the image roller.