Back to results
US 10,877,387 B2Granted
Magnetic toner
AssigneeCanon Kabushiki Kaisha
InventorsKosuke Fukudome, Tetsuya Kinumatsu, Yusuke Hasegawa
Life of this patent
Estimating the term…
Abstract
A magnetic toner comprising a magnetic toner particle including a binder resin, a magnetic body and a crystalline polyester, wherein a storage elastic modulus E′(40) [Pa] at 40° C. and a storage elastic modulus E′(85) [Pa] at 85° C., which are obtained in a powder dynamic viscoelasticity measurement of the magnetic toner, satisfy the following formulas (1) to (3). E′(40)≥6.0×109 (1) E′(85)≤5.5×109 (2) [E′(40)−E′(85)]×100/E′(40)≥40 (3)
Claims9
A magnetic toner, comprising:
- a magnetic toner particle including a binder resin, a magnetic body and a crystalline polyester, wherein
- E′(40)≥6.0×109,
- E′(85)≤5.5×109, and
- [E′(40)−E′(85)]×100/E′(40)≥40
- where E′(40) [Pa] is a storage elastic modulus at 40° C. and E′(85) [Pa] is a storage elastic modulus at 85° C., which are obtained in a powder dynamic viscoelasticity measurement of the magnetic toner.
2 more elements
Dependencies are inferred from the claim text.