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. 15, 1991
Filed:
Mar. 08, 1989
Applicant:
Inventors:
Benzion Landa, Edmonton, CA;
Shabtai Ezuz, Moshav Beit Hannan, IL;
Jakob Karin, Ramat Gan, IL;
Paul Fenster, Petach Tikva, IL;
Assignee:
Spectrum Sciences B.V., Rotterdam, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355256 ; 118662 ; 355268 ; 430117 ;
Abstract
Apparatus including a drum having a drum surface, apparatus for supplying a particle dispersion comprising particles to the drum surface, electrostatic apparatus for causing at least some of the particles to adhere to the drum surface and resilient blade apparatus downstream of the electrostatic apparatus for operative engagement with the drum surface for retaining a layer of particle rich material on the drum surface.