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:
Jan. 19, 1993
Filed:
Jun. 24, 1991
Bruce J Rubin, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A development apparatus for developing images on an image-bearing surface being moved through a fixed path in a copier or printer includes a magnetic development brush that has a rotatable magnetic core generating a first magnetic field thereabout, and a non-magnetic shell which forms a development nip with the image-bearing surface. The non-magnetic shell is contoured within the development nip so as to follow the shape of the fixed path of the image-bearing surface through such nip. The development brush further includes nip extending shoulder sections, and magnet keepers for forming field magnets within the first magnetic field of the magnetic core. The magnet keepers each generate an auxiliary magnetic field for enhancing and increasing the strength of a resultant magnetic field at and about the shoulder sections thereby enabling the continued forming of a consistent and desirably thick developer material nap around the extended shoulder sections.