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. 22, 1978
Filed:
May. 31, 1977
Frederick W Hudson, West Henrietta, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
An improvement in development apparatus for developing a latent image with magnetic toner having a development zone defined at least in part by a sloping wall member along which magnetic toner migrates under the influence of gravity, residing in providing a flux channeling member affixed to the sloping wall member and within the development zone. Magnetic flux emanating from latent magnetic images passing through the development zone are channeled by the magnetic flux member and in cooperation with the magnetic toner forms a magnetic seal which prevents the flow of toner from the development zone. The present invention obviates the need to utilize a physical barrier which can cause damage to the surface of imaging members.