US 12,105,469 B2
Electrostatic charge image developing toner, electrostatic charge image developer, method for producing electrostatic charge image developing toner, toner cartridge, process cartridge, image forming apparatus, and image forming method
Atsushi Sugawara, Minamiashigara (JP); and Hiroshi Nakazawa, Minamiashigara (JP)
Assigned to FUJIFILM BUSINESS INNOVATION CORP., Tokyo (JP)
Filed by FUJIFILM Business Innovation Corp., Tokyo (JP)
Filed on Aug. 12, 2021, as Appl. No. 17/400,172.
Claims priority of application No. 2021-086309 (JP), filed on May 21, 2021.
Prior Publication US 2022/0373903 A1, Nov. 24, 2022
Int. Cl. G03G 9/087 (2006.01); G03G 9/08 (2006.01); G03G 9/097 (2006.01); G03G 15/08 (2006.01); G03G 21/18 (2006.01)
CPC G03G 9/0819 (2013.01) [G03G 9/0804 (2013.01); G03G 9/08755 (2013.01); G03G 9/09733 (2013.01); G03G 15/08 (2013.01); G03G 21/1814 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An electrostatic charge image developing toner comprising:
a toner particle containing a binder resin and a releasing agent,
wherein the following requirement (1) is satisfied in cross section observation of the toner particle:
requirement (1): the number of a releasing agent domain having a long diameter of 500 nm or more and 1,000 nm or less is 7 or more on average per toner particle.