Toner

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United States of America Patent

PATENT NO 11841681
SERIAL NO

17348053

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Abstract

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A toner comprising a toner particle and an external additive, wherein the external additive comprises a composite particle comprising an organosilicon polymer fine particle covering a surface of an alumina particle, a coverage ratio of the surface of the alumina particle with the organosilicon polymer fine particle is 1 to 50 area %, and given A (nm) as a number-average particle diameter of primary particles of the organosilicon polymer fine particle and B (nm) as a number-average particle diameter of primary particles of the alumina particle, following formulae (I) and (II) are satisfied:

description='In-line Formulae' end='lead'A≤90  (I)description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'100≤B≤1000  (II).description='In-line Formulae' end='tail'

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Patent Owner(s)

Patent OwnerAddress
CANON KABUSHIKI KAISHA30-2 SHIMOMARUKO 3-CHOME OHTA-KU TOKYO 1468501 ?1468501

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fumita, Hidekazu Shizuoka, JP 19 285
Katsura, Taiji Shizuoka, JP 38 256
Kosaki, Yusuke Shizuoka, JP 22 557
Ootsuka, Takayoshi Shizuoka, JP 1 2
Yamawaki, Kentaro Shizuoka, JP 33 354
Yoshida, Sara Shizuoka, JP 12 227

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