TONER FOR DEVELOPMENT OF ELECTROSTATIC CHARGE IMAGE
The present invention is to provide a toner that exhibits an excellent balance between heat-resistant shelf stability and low-temperature fixability, and exhibits an excellent hot offset resistance. Disclosed is a toner for developing electrostatic images, comprising an external additive and colored...
Gespeichert in:
| Hauptverfasser: | , , , , |
|---|---|
| Format: | Patent |
| Sprache: | eng ; fre ; ger |
| Schlagworte: | |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | The present invention is to provide a toner that exhibits an excellent balance between heat-resistant shelf stability and low-temperature fixability, and exhibits an excellent hot offset resistance. Disclosed is a toner for developing electrostatic images, comprising an external additive and colored resin particles containing a binder resin, a colorant and softening agents, wherein the colored resin particles contain a monoester compound A represented by the following formula (1) and a monoester compound B represented by the following formula (2) as the softening agents, and a content of the monoester compound A is in the range from 95 to 99% by mass, and a content of the monoester compound B is in the range from 1 to 5% by mass, and wherein a content of the softening agents is in the range from 10 to 30 parts by mass, with respect to 100 parts by mass of the binder resin:
Formula (1):R 1 -COO-R 2
wherein, R 1 is a linear alkyl group having 17 to 23 carbons; R 2 is a linear alkyl group having 16 to 22 carbons; and a sum of the carbons of R 1 and R 2 is 39;
Formula (2):R 3 -COO-R 4
wherein, R 3 is a linear alkyl group having 15 to 21 carbons; R 4 is a linear alkyl group having 16 to 22 carbons; and a sum of the carbons of R 3 and R 4 is 35 to 37. |
|---|