Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ELECTROSTATIC-IMAGE DEVELOPMENT TONER
Document Type and Number:
WIPO Patent Application WO/2019/065730
Kind Code:
A1
Abstract:
Provided is an electrostatic-image development toner that is excellent in terms of print durability and has low supply cohesiveness. The electrostatic-image development toner comprises: colored resin particles that contain a binding resin, a colorant, and a charge controlling agent; and external additives. The electrostatic-image development toner is characterized in that: the external additives include at least an external additive A and an external additive B; the external additive A comprises metal oxide particles that have an electrostatic property having the same polarity as the colored resin particles, that have a ratio of the amount of electric charge per unit surface area with respect to the colored resin particles of 0.85 or higher, and that have a number average particle diameter of 5-100 nm; the external additive B comprises resin particles that have an electrostatic property having a polarity opposite that of the colored resin particles and that have a number average particle diameter of 50-1000 nm; and the electrostatic-image development toner contains 0.5-0.6 parts by mass of the external additive A and contains 0.1-2.0 parts by mass of the external additive B relative to 100 parts by mass of the colored resin particles.

More Like This:
JP2008096969TONER, IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD
JP2022034384IMAGE FORMING METHOD AND IMAGE FORMING SYSTEM
JPS6199158ELECTROPHOTOGRAPHIC BINARY DEVELOPER AND METHOD OF DEVELOPMENT USING IT
Inventors:
CHIBA TAKERU (JP)
Application Number:
PCT/JP2018/035674
Publication Date:
April 04, 2019
Filing Date:
September 26, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ZEON CORP (JP)
International Classes:
G03G9/097
Foreign References:
JPH09114129A1997-05-02
JPH1115300A1999-01-22
JPH1124372A1999-01-29
JP2013140235A2013-07-18
JP2016126140A2016-07-11
JP2016163866A2016-09-08
JP2008040160A2008-02-21
JPH09160282A1997-06-20
JP2012063712A2012-03-29
JP2009128778A2009-06-11
JP2011090168A2011-05-06
Attorney, Agent or Firm:
KISHIMOTO, Tatsuhito et al. (JP)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: CARE BED

Next Patent: FORCED ASSIGNMENT OF IPV6 ADDRESS IN NEIGHBOR AWARENESS NETWORKING