Toner for developing electrostatic images
AssigneeZeon Corporation
InventorSakyo Yagyu
Life of this patent
Estimating the term…
Abstract
Provided is a toner which provides excellent balance between high temperature storage stability and low temperature fixability and which is less likely to cause the bleeding out of a release agent even in a long-term, high-temperature condition. Disclosed is a toner for developing electrostatic images, comprising: colored resin particles comprising a binder resin, a colorant and a release agent, and an external additive, wherein the colored resin particles further comprise a styrene-based thermoplastic elastomer, and wherein a content of a fatty acid ester compound having a number average molecular weight (Mn) of 500 or more and less than 2,000 as the release agent, is from 2 parts by mass to 20 parts by mass with respect to 100 parts by mass of the binder resin.
Claims5
A toner for developing electrostatic images, comprising:
- colored resin particles comprising a binder resin, a colorant and a release agent, and
- an external additive,
- wherein the colored resin particles further comprise a styrene-based thermoplastic elastomer,
- wherein a content of a fatty acid ester compound having a number average molecular weight (Mn) of 500 or more and less than 2,000 as the release agent, is from 2 parts by mass to 20 parts by mass with respect to 100 parts by mass of the binder resin, and
- wherein a weight average molecular weight of the styrene-based thermoplastic elastomer is from 60,000 to 350,000, and
- wherein a content of an aromatic vinyl monomer unit contained in the styrene-based thermoplastic elastomer is 15% by mass or more and less than 27% by mass.
Dependencies are inferred from the claim text.