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:
Dec. 19, 1995
Filed:
Jan. 05, 1995
Applicant:
Inventors:
Assignee:
AGFA-Gevaert, N.V., Mortsel, BE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430109 ; 430110 ; 430111 ;
Abstract
A dry powder toner of which the particles are electrostatically or magnetically attractable and suited for development of electrostatic charge images or magnetic patterns and wherein the composition of said powder particles includes a resin binder comprising at least one resin A and at least one resin B, characterized in that: (1) said resin(s) A and said resin(s) B each have a glass transition temperature (Tg) larger than 45.degree. C., (2) the Tg of said resin(s) A is at least 2.5.degree. C. lower than the Tg of said resin(s) B, (3) the melt viscosity (mvA) of said resin(s) A is at least 500 poise and the melt viscosity (mvB) of said resin(s) B is within the scope of the following equation: