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. 08, 1989
Filed:
Aug. 05, 1988
Applicant:
Inventor:
Bijay S Saha, Rochester, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
4301066 ; 430108 ; 252 6257 ;
Abstract
Disclosed are carrier particles which comprise magnetically hard ferrite material having a single phase hexagonal crystal structure, and which contain neodymium, praseodymium, samarium, europium, or a mixture thereof, or a mixture of one or more of those elements with lanthanum. Also disclosed in an electrostatic two-component dry developer composition comprising charged toner particles mixed with oppositely charged carrier particles which comprise this hard ferrite material. A method for developing an electrostatic image by contacting the image with a two-component dry developer composition is also disclosed.