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:
Nov. 15, 1988
Filed:
Dec. 18, 1986
Joseph Knott, Tutzing, DE;
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Abstract
In a developing station functioning on the principle of cross-blending in an electrophotographic printing device, two mixing screws running in opposite directions are arranged at a distance from one another. The first mixing screw is situated in a mixing trough provided with a plurality of oblique slots and comprises two mixing strips in the delivery region of the developer mix which are offset by 180.degree. and which neighbor one another. A scraper strip having an actual scraping region and scraping teeth is situated above the two mixing screws. A metering baffle is arranged at an angle relative to this scraper strip, this metering baffle extending through the teeth of the scraper strip and including baffles at its lower end for controlling the flow of the developer mix.