Title:
TONER
Document Type and Number:
WIPO Patent Application WO/2014/002962
Kind Code:
A1
Abstract:
Provided is a toner whereby stable image densities are obtained throughout long-term use regardless of the use environment and, simultaneously therewith, the occurrence of cleaning failures can be inhibited. The toner comprises fine silica particles and toner particles comprising a binder resin and a colorant, and is characterized in that the average roundness of the toner is 0.950 or higher, the static friction coefficient of the toner against a polycarbonate resin substrate is 0.100-0.200, and the coverage (X1) of the toner surface with the fine silica particles, as determined with an X-ray photoelectron spectrometer (ESCA), is 50.0-75.0% by area.
Inventors:
NOMURA SHOTARO (JP)
HASEGAWA YUSUKE (JP)
MATSUI TAKASHI (JP)
HIROKO SHUICHI (JP)
SUZUMURA YOSHITAKA (JP)
OHMORI ATSUHIKO (JP)
HASEGAWA YUSUKE (JP)
MATSUI TAKASHI (JP)
HIROKO SHUICHI (JP)
SUZUMURA YOSHITAKA (JP)
OHMORI ATSUHIKO (JP)
Application Number:
PCT/JP2013/067281
Publication Date:
January 03, 2014
Filing Date:
June 24, 2013
Export Citation:
Assignee:
CANON KK (JP)
International Classes:
G03G9/08; G03G9/087
Foreign References:
| JP2005345647A | 2005-12-15 | |||
| JP2011215310A | 2011-10-27 | |||
| JP2013047754A | 2013-03-07 |
Attorney, Agent or Firm:
SERA Kazunobu et al. (JP)
Kazunobu Sera (JP)
Kazunobu Sera (JP)
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