Title:
TONER
Document Type and Number:
WIPO Patent Application WO/2020/013166
Kind Code:
A1
Abstract:
Provided is a toner that can form a high-resolution image that is invisible under visible light and can be seen when irradiated with infrared light. The toner has toner particles containing a binding resin and inorganic infrared absorbing particles, wherein: (1) in spectral analysis of a fixed image obtained by fixing an unfixed image which is formed on a recording material using the toner and which has an application amount of 0.30 mg/cm2, the absorption rate of light in a wavelength range of 400-800 nm has a maximum value of 10% or less; and (2) in a cross-sectional observation of the toner particles using a transmission electron microscope, when a circle with a radius of 2.0 µm with the barycenter of a cross-sectional image of the toner particles as the center is drawn, and when this circle is subdivided into four quadrants, a fluctuation coefficient for the number of inorganic infrared absorbing particles observed in each quadrant is 0.50 or less.
Inventors:
HASHIMOTO AKIRA (JP)
YAMAMOTO TAKESHI (JP)
HIGASHI RYUJI (JP)
TOYODA TAKAYUKI (JP)
OKAJIMA MAKI (JP)
KITAO AKIKO (JP)
SUZUKI KOICHI (JP)
YAMAMOTO TAKESHI (JP)
HIGASHI RYUJI (JP)
TOYODA TAKAYUKI (JP)
OKAJIMA MAKI (JP)
KITAO AKIKO (JP)
SUZUKI KOICHI (JP)
Application Number:
PCT/JP2019/027098
Publication Date:
January 16, 2020
Filing Date:
July 09, 2019
Export Citation:
Assignee:
CANON KK (JP)
International Classes:
G03G9/097; C01G19/00; C01G30/00; C01G41/00; C09K3/00; G03G9/08
Foreign References:
| JP2006079017A | 2006-03-23 | |||
| JP2007033681A | 2007-02-08 | |||
| JP2005233990A | 2005-09-02 | |||
| JP2006079020A | 2006-03-23 | |||
| JP2004002055A | 2004-01-08 | |||
| CN106497255A | 2017-03-15 | |||
| JP2010195967A | 2010-09-09 | |||
| JP2013092748A | 2013-05-16 | |||
| JP2016142811A | 2016-08-08 | |||
| JP2000309736A | 2000-11-07 | |||
| JP2006078888A | 2006-03-23 | |||
| JPH1039535A | 1998-02-13 | |||
| JP2005233990A | 2005-09-02 | |||
| JP2009251414A | 2009-10-29 | |||
| JP2003186238A | 2003-07-03 | |||
| JP2006079020A | 2006-03-23 | |||
| JP2010102325A | 2010-05-06 | |||
| JP2011503274A | 2011-01-27 | |||
| JP2018131062A | 2018-08-23 | |||
| JP2018131063A | 2018-08-23 |
Other References:
MITSUI MIIKE, CHEMICAL ENGINEERING MACHINERY, CO., LTD.
See also references of EP 3822704A4
See also references of EP 3822704A4
Attorney, Agent or Firm:
OKABE Yuzuru et al. (JP)
Download PDF: