Image forming apparatus, electrostatic charge image developer, and electrostatic charge image developing toner
US9915886B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2016 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | Jul 27, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0607
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes a developing unit that contains an electrostatic charge image developer which contains a carrier and an electrostatic charge image developing toner, wherein the toner includes toner particles which contain a polyester resin, which is a polycondensate of a polycarboxylic acid and a polyol, and has a glass transition temperature of 50° C. to 70° C., the polyol includes a polyol not having a bisphenol A structure in a range of 50% by weight to 100% by weight, and a melt viscosity A of the toner at 110° C. after storage for 2 hours under the environment of absolute humidity of 82.7 (g/m3) and a melt viscosity B of the toner at 110° C. after storage for 2 hours under the environment of absolute humidity of 16.5 (g/m3) each are in the ranges specified in the specification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.