| abstract |
An image with improved long-term reproducibility by improving toner transfer efficiency while maintaining fixing performance and durability characteristics during use, reducing density differences between colors of full-color images, eliminating image defects during transfer It is an object of the present invention to provide a black toner that outputs toner, a manufacturing method thereof, and a process cartridge. An electrophotographic toner in which an external additive is added to toner base particles, wherein the toner has an average particle diameter D4 of 3.0 μm to 5.0 μm and a relative dielectric constant of 3.0 to 5.0. Yes, the image density on the transfer medium when the toner adhesion amount is 0.3 mg / cm 2 is 1.4 or more, and the toner base particle surface has a glass transition point higher than that of the resin inside the partially crosslinked toner. An electrophotographic toner comprising a resin layer. [Selection figure] None |