Patent · US Active

Toner

US9551947B2 · kind B2 · utility

26Cited by

16References

5Claims

0Family size

Assignee

Canon Kabushiki Kaisha · JP

Inventors

Shuichi Hiroko · Susono, JP
Yoshihiro Nakagawa · Numazu, JP
Tomohisa Sano · Soma, JP

Key dates

Filing date	Aug 8, 2011
Grant date	Jan 24, 2017
Priority date	—
Expiry date	Sep 27, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG03G9/08797
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A magnetic toner is provided that exhibits an excellent dot reproducibility and developing performance after being allowed to stand in a high temperature and high humidity environment and an excellent low-temperature fixability. The magnetic toner has an inorganic fine powder and a magnetic toner particle containing a binder resin, a magnetic body, and a release agent, wherein in a stress relaxation measurement using a rotating plate rheometer, the magnetic toner exhibits a yield value A at 25° C. of at least 3×106 (sec), and the magnetic toner that has been heated to 80° C. and then cooled to 25° C. exhibits a yield value B at 25° C. of not more than 1×105 (sec).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.