Developer for electrostatic image development
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 18, 2003
Grant Date -
Sep 6, 2001
app pub date -
Feb 12, 2001
filing date -
Feb 14, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An object of the present invention is to provide a developer for electrostatic image development, which exhibits stable charge behavior during printing even when using a polyester resin and does not cause contamination of the inside of the apparatus because of less scattering of the toner, and also facilitates easy maintenance. The developer for electrostatic image development of the present invention comprises colored resin particles comprising at least a binder resin and a colorant, and a magnetic carrier, wherein a proportion of said colored resin particles having a particle diameter in a range of from 12 .mu.m to 16 .mu.m, inclusive, in said developer and a specific charge amount of said colored resin particles meet the following expression (1): 5.18+0.12.times.A
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