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. 29, 2020
Filed:
Jun. 12, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Kenji Aoki, Numazu, JP;
Takashi Matsui, Mishima, JP;
Kenta Kamikura, Yokohama, JP;
Masao Suzuki, Kawasaki, JP;
Tsutomu Shimano, Mishima, JP;
Reo Tagawa, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A toner, including a toner particle that contains a binder resin and a release agent, wherein the binder resin contains a polymer A, the polymer A including a first monomer unit derived from a first polymerizable monomer and a second monomer unit derived from a second polymerizable monomer different from the first polymerizable monomer; the first polymerizable monomer is selected from (meth)acrylic acid esters having a Calkyl group; the toner has a first monomer unit content and a second monomer unit content in the polymer A which are within specific ranges, and assuming that an SP value of the first monomer unit is taken as SPand an SP value of the second monomer unit is taken as SP, the formula (1) below is satisfied, and the molecular weight of the release agent is at least 1,000.3.00≤(SP−SP)≤25.00  (1)