Patent ID: 9665026
Date: 2017-05-30
CPC Classifications: G03G

Claim:
1. An image forming method comprising a step of developing with a developer containing a toner, the toner comprising: toner particles each of which contains a binder resin, a wax, and a coloring agent; negatively chargeable silica fine particles A on surfaces of the toner particles, the silica fine particles A having a number-average particle diameter (D1) of 60 to 300 nm, and an amount of the silica fine particles A is 2.0 parts by mass or more and 10.0 parts by mass or less when an amount of the toner particles is set to 100 parts by mass, positively chargeable strontium titanate fine particles B adhering to the silica fine particles A electrostatically, the strontium titanate fine particles B have a fixing rate of 0.10 to 0.60, and an amount of the strontium titanate fine particles B is 0.2 part by mass or more and 1.0 part by mass or less when an amount of the toner particles is set to 100 parts by mass, wherein Y/X is 0.75 or more, where a coverage rate of the surfaces of the toner particles with the silica fine particles A is X (%), X being 20 to 95%, and a coverage rate with the silica fine particles A fixed to the surfaces of the toner particles is Y (%), the step of developing includes a step of peeling the silica fine particles A and the strontium titanate fine particles B to increase a charge quantity of the toner.