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Patent Searching and Data


Title:
TONER FOR ELECTROSTATIC LATENT IMAGE DEVELOPMENT
Document Type and Number:
WIPO Patent Application WO/2017/168863
Kind Code:
A1
Abstract:
Each toner particle contained in this toner for electrostatic latent image development comprises a toner mother particle and silica particles (13) adhering to the surface of the toner mother particle. The toner mother particle comprises a toner core (11) and a shell layer (12). The shell layer (12) comprises a first domain (12a) that is substantially configured from a first resin, and a second domain (12b) that is substantially configured from a second resin. The first resin and the silica particles (13) have higher positive chargeability than the second resin. The ratio of the total of the area of a first covered region (a region covered by the first domain) and the area of a second covered region (a region covered by the second domain) to the area of the entire surface region of the toner core (11) is from 40% to 90% (inclusive). The surface potentials of the toner particles as measured by a scanning probe microscope have an average of from +50 mV to +350 mV (inclusive) and a standard deviation of 120 mV or less.

Inventors:
TSUCHIHASHI KAZUKI (JP)
Application Number:
PCT/JP2016/087146
Publication Date:
October 05, 2017
Filing Date:
December 14, 2016
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Assignee:
KYOCERA DOCUMENT SOLUTIONS INC (JP)
International Classes:
G03G9/08; G03G9/087
Domestic Patent References:
WO2017006870A12017-01-12
Foreign References:
JP2014067021A2014-04-17
JP2015141220A2015-08-03
JP2015087478A2015-05-07
Attorney, Agent or Firm:
MAEI Hiroyuki (JP)
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