Patent · US Active

Toner

US9971263B2 · kind B2 · utility

38Cited by

53References

10Claims

0Family size

Assignee

Canon Kabushiki Kaisha · JP

Inventors

Kosuke Fukudome · Tokyo, JP
Shuhei Moribe · Mishima, JP
Koji Nishikawa · Soma, JP
Daisuke Yoshiba · Soma, JP
Shotaro Nomura · Soma, JP
Atsuhiko Ohmori · Yokohama, JP
Sho Kimura · Kashiwa, JP
Katsuhisa Yamazaki · Numazu, JP

Key dates

Filing date	Dec 29, 2016
Grant date	May 15, 2018
Priority date	—
Expiry date	Dec 29, 2036

Classification

Technology area (CPC G)Physics
CPC primaryG03G9/08795
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Provided is a toner having a toner particle that contains a binder resin and a magnetic particle, wherein the magnetic particle satisfies the following stipulations (i) to (iii): (i) the magnetic particle has a prescribed shape and has a protruded portion on a plane portion thereof, (ii) the magnetic particle has a core particle that contains magnetite and has a coating layer, and (iii) the coating layer contains an iron-containing oxide and at least one of a silicon-containing oxide and an aluminum-containing oxide. In a molecular weight distribution measured on the tetrahydrofuran-soluble matter of the toner, the ratio (Mw/Mn) of a weight-average molecular weight to a number-average molecular weight is at least 10.0.

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