Dynamic end seal for image forming apparatus

US6553195B2 · kind B2 · utility

Inventors

• Kurt Matthew Korfhage · Shelbyville, US
• Michael David Maul · Lexington, US
• Alexander D. Meade · Lexington, US
• Tom E Stickler · Lexington, US
• Liqun Larry Wang · Lexington, US

Key dates

• Filing date: Sep 27, 2001
• Grant date: Apr 22, 2003
• Expiry date: Sep 27, 2021

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G2215/1661
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An end seal for use in an electrophotographic image forming apparatus uses an array of ridges (or grooves) to urge toner inwardly so as to help prevent toner escape. The end seal works in conjunction with a cleaning blade. The end seal includes a blade pocket for mating with the end portions of the cleaning blade and a middle portion having an array of ridges thereon. The ridges are angled inward to urge any toner trapped therebetween inward away from the end seals, where the toner can be directed to a waste reservoir in a normal fashion. This “snowplowing” action of the ridges helps prevent outward migration of toner, thereby minimizing toner escape. The end seal may be composed of two or more layers of differing materials. There may be an end seal at each end of the cleaner blade.