TONER AND IMAGING METHOD

摘要

A toner having compatibility between transfer properties and cleaning properties is provided. A toner wherein a fine particle A containing a primary particle having a number average particle diameter (D1) of 80 nm or more and 400 nm or less is present on the surface of a toner particle at a coverage ratio of 5 to 40%, a fixing rate of 30 to 90% by mass, and a variation coefficient of 0.1 to 0.5 in a region of 0.5 πμm2.

主权项

1. A toner comprising a toner particle containing a binder resin and a colorant, and a fine particle A,
wherein the toner has an average circularity of 0.970 or more, the fine particle A contains a primary particle having a number average particle diameter (D1) of 80 nm or more and 400 nm or less, a coverage ratio of the surface of the toner particle covered with the fine particle A is 5% or more and 40% or less as determined by electron spectroscopy for chemical analysis (ESCA), the toner contains the fine particle A at a fixing rate of 30% by mass or more and 90% by mass or less, and a variation coefficient of the number of the fine particle A present in a region of 0.5 πμm2 on the surface of the toner particle is 0.1 or more and 0.5 or less.