Toner, one-component developer, and two-component developer

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United States of America Patent

PATENT NO 9977355
SERIAL NO

15648522

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Abstract

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A plurality of toner particles each include a toner core, a shell layer covering a surface of the toner core, and a plurality of magnetic particles penetrating the shell layer. Each of the magnetic particles has an embedded portion and a protrusion portion. The embedded portions are embedded in the surface of the toner core. The protrusion portions are located further outward than the embedded portions in a radial direction of the toner particle and protrude outward from a surface of the shell layer in the radial direction of the toner particle. An average Heywood diameter X of the magnetic particles, a shell layer thickness Y, and an average value Z of protrusion heights of the respective magnetic particles satisfy relation (1) and relation (2) shown below.

description='In-line Formulae' end='lead'0<Z≤(X/2)  (1)description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'10 nm≤Y≤50 nm  (2)description='In-line Formulae' end='tail'

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Patent Owner(s)

Patent OwnerAddress
KYOCERA DOCUMENT SOLUTIONS INCOSAKA JAPAN OSAKA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Takemori, Toshiki Osaka, JP 16 16

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