Method for manufacturing toner, toner, fixing device, and image forming apparatus
US7118843B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 5, 2003 |
| Grant date | Oct 10, 2006 |
| Priority date | — |
| Expiry date | Feb 9, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08755
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner having high mechanical strength and being capable of exhibiting a sufficient fixing property in a wide temperature range, and a method for manufacturing such a toner are provided. Further, a fixing device and an image forming apparatus in which such a toner can be suitably used are also provided. The method for manufacturing a toner comprises a step of spreading a dispersion liquid, in which a dispersoid containing polyester-based resin is dispersed in a dispersion medium, into a laminar flow by pressing it against a smooth surface using a gas flow and then jetting the dispersion liquid in the form of fine particles and a step of solidifying the fine particles of the dispersion liquid while they are being conveyed in a solidifying section. The polyester-based resin includes block polyester mainly composed of a block copolymer, and amorphous polyester having crystallinity lower than that of the block polyester. The block polyester has a crystalline block obtained by condensation of a diol component with a dicarboxylic acid component, and an amorphous block having crystallinity lower than that of the crystalline block.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.