Title:
TWO-COMPONENT DEVELOPER
Document Type and Number:
WIPO Patent Application WO/2023/281881
Kind Code:
A1
Abstract:
In a two-component developer according to the present invention, external additive particles contained in toner particles contain resin particles that contain a thermoplastic resin. Carrier particles have coating layers containing a coating resin and barium titanate particles. The coating resin contains a silicone resin. The number average primary particle diameter of the barium titanate particles is 100-500 nm. The barium titanate particle content is 4-45 parts by mass with respect to 100 parts by mass of the coating resin. The ratio of the mass of the coating layers with respect to the mass of carrier cores is 0.10-4.90 mass%. The average value of the carrier core coverage is equal to or greater than 80.0% and less than 100.0%.
Inventors:
SHIMIZU TAMOTSU (JP)
TERASAKI KOHEI (JP)
UCHIHASHI YUMA (JP)
TAKEUCHI ERIKO (JP)
TERASAKI KOHEI (JP)
UCHIHASHI YUMA (JP)
TAKEUCHI ERIKO (JP)
Application Number:
PCT/JP2022/016379
Publication Date:
January 12, 2023
Filing Date:
March 31, 2022
Export Citation:
Assignee:
KYOCERA DOCUMENT SOLUTIONS INC (JP)
International Classes:
G03G9/097; G03G9/113
Foreign References:
| JP2007033631A | 2007-02-08 |
Attorney, Agent or Firm:
MAEI Hiroyuki (JP)
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