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. 18, 2007
Filed:
Jul. 14, 2005
Lionel C. Bessette, North Grafton, MA (US);
Lionel C. Bessette, North Grafton, MA (US);
Clarity Imaging Technologies, Inc., Springfield, MA (US);
Abstract
A metering blade confronts the developer roller of a toner cartridge with a working face and associated upstream corner that is accurately controlled with respect to the developer roller to achieve a desired gap therebetween. More particularly, the quality of toner metering is determined through an appropriate technique and the angle of the bottom working face and working corner is varied using appropriate computer-controlled machining techniques to adjust the location of the corner with respect to the radial centerline of the roller at all points along the axial direction. In an illustrative embodiment, the blade's working face is formed to create a setback that is compound angle in two orthogonal directions. This compound angle reorients the upstream corner of the working face to compensate for irregular metering and electrostatic differences across the roller surface, particularly where toner is greater on one side of the roller than the other, opposing side.