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. 13, 1987
Filed:
Feb. 13, 1986
Applicant:
Inventors:
Josef Matkin, Malvern, AU;
Richard J Treleaven, Toorak Gardens, AU;
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430109 ; 430137 ; 430138 ; 430 98 ; 430903 ; 428407 ;
Abstract
Pressure-fixable toner particles suitable for use in electrostatic copying machines and method of preparing same. The toner particle is spherical in shape and comprises a thin, substantially continuous surface layer of polyurea, and an interior portion comprising a matrix of polyurea, said matrix having a colorant and pressure-fixable material contained therein, said polyurea matrix forming a continium extending from the surface layer inwardly toward the center of said particle. The method comprises: