Magnetic toner
AssigneeCanon Kabushiki Kaisha
InventorsShuntaro Watanabe, Hiroki Akiyama, Hiroki Kagawa
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AssigneeCanon Kabushiki Kaisha
InventorsShuntaro Watanabe, Hiroki Akiyama, Hiroki Kagawa
Estimating the term…
A magnetic toner comprising a magnetic toner particle including a binder resin, a magnetic body and a crystalline polyester, wherein in cross-sectional observation of the magnetic toner particle using a transmission electron microscope, a variation coefficient CV3 of an occupied area ratio of the magnetic body when a cross section of the magnetic toner particle is divided by a square grid having a side of 0.8 μm is from 40.0% to 80.0%, and assuming that a storage elastic modulus at 40° C. is taken as E′(40) [Pa] and a storage elastic modulus at 85° C. is taken as E′(85) [Pa], the storage elastic moduli being obtained in a powder dynamic viscoelasticity measurement of the magnetic toner, the following formulas (1) and (2) are satisfied. E′(85)≤2.0×109 (1) [E′(40)−E′(85)]×100/E′(40)≥70 (2)
A magnetic toner, comprising:
Dependencies are inferred from the claim text.