Title:
電子写真画像形成方法及び電子写真画像形成装置
Document Type and Number:
Japanese Patent JP7200769
Kind Code:
B2
Abstract:
To provide: an electrostatic charge image developing toner capable of improving low temperature fixability, high transfer efficiency, high image quality and cleanability and reducing the occurrence of filming and scratch of a photoreceptor; a developer for electrostatic charge image development; and an electrophotographic image forming method.SOLUTION: The electrostatic charge image developing toner formed by externally adding fine particles including at least inorganic fine particles to coloring particles including at least a binder resin, a release agent and a colorant has a volume average particle diameter (Dv) of 3.00-8.00 μm and an average circularity of 0.945-0.985. The following formulae (1) and (2) are simultaneously satisfied, the formula (1):W(6)≤100 mass ppm and the formula (2):50 mass ppm≤W(3)-W(6)≤300 mass ppm, (where W (3) represents a value obtained by dividing a residual toner mass on a sieve having an opening having 3 times of Dv by a toner mass to be sieved, and W (6) represents a value obtained by dividing a residual toner mass on a sieve having an opening having 6 times of Dv by a toner mass to be sieved.).SELECTED DRAWING: None
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Inventors:
Hiroshi Nagasawa
Takao Kawamura
Naoya Tatekawa
Yusuke Takigaura
Hidehito Haruki
Takao Kawamura
Naoya Tatekawa
Yusuke Takigaura
Hidehito Haruki
Application Number:
JP2019048641A
Publication Date:
January 10, 2023
Filing Date:
March 15, 2019
Export Citation:
Assignee:
Konica Minolta Co., Ltd.
International Classes:
G03G9/08; G03G5/147; G03G9/087; G03G9/097; G03G9/10
Domestic Patent References:
| JP2007249124A | ||||
| JP2002091053A | ||||
| JP2005221968A | ||||
| JP2017167420A | ||||
| JP2018077333A |
Attorney, Agent or Firm:
Koyo International Patent Office