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:
Aug. 05, 2003
Filed:
Mar. 07, 2002
John A. Foegelle, Broken Arrow, OK (US);
Electronic Label Technology, Inc., Broken Arrow, OK (US);
Abstract
A high yield laser printer toner cartridge for use with a Lexmark Optra series of laser printers and a method of modifying the toner cartridge so as to contain a added volume of toner without producing an error message. The toner cartridge including a hopper with a shaft having a first end and a second end extending through the hopper, such that a paddle disposed in the hopper rotates about the shaft, an encoder wheel which measures the volume of toner in the hopper secured to the first end of the shaft extending from the hopper and a drive gear having a face and a limit positioned on the face secured to the second end of the shaft, an arbor including a gap on its outer circumference bounded on one end by a shoulder secured to the second end of the shaft such that the limit is positioned in the gap of the arbor, a torsion spring having a first segment and a second segment where the first segment is mounted onto the drive gear and the second segment is mounted onto the arbor, and a stop secured on the face of the drive gear between the limit and the shoulder.