Patent ID: 11960242
Assignee: CANON KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A toner, comprising:
a toner particle comprising a toner base particle, and a plurality of convex portions X existing on a surface of the toner base particle;
each of the convex portions X contains an organic silicon polymer; and
the convex portions X comprising a plurality of convex portions Y each having a convex height H of 40 nm or higher when a cross-section of the toner is observed with a scanning transmission electron microscope, wherein
the
convex portions Y comprise a plurality of convex portions Y2 each having a ratio (H/w) of 0.33 to 0.80 where w is a convex width defined by a maximum line segment in a continuous interface between the toner base particle and each of convex portions X, and convex height H is a maximum length of each of the convex portions X in a normal direction to w,
a number ratio P (H/w) of a number of the convex portions Y2 is 70% by number or more with respect to a total number of the convex portions Y,
a migration rate of the convex portions X in a water washing method of the toner is 7 to 20% by number of a total of the convex portions X before water washing, and
a number average particle size D1 of the convex portions X that have migrated into water by the water washing method is 30 to 300 nm.