One-component magnetic toner for developing an electrostatic charge image, process cartridge, and method for recycling the process cartridge
US7323279B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2004 |
| Grant date | Jan 29, 2008 |
| Priority date | — |
| Expiry date | Mar 23, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/0835
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a one-component magnetic toner for developing an electrostatic charge image, which do not cause an image defect by toner aggregation or fusion even though a device is miniaturized and the processing speed of the device is accelerated, and which allows easy recycling of a toner cartridge. The one-component magnetic toner for developing an electrostatic charge image of the present invention is one comprising: toner particles comprising fine magnetic particles (A) and a binder resin; and fine magnetic particles (B) externally added to the toner particles, in which the maximum permeability (μmA) of the fine magnetic particles (A) contained in the toner particles and the maximum permeability (μmB) of the fine magnetic particles (B) externally added to the toner particles satisfy a relationship represented by the following formula (1)μmB/μmA≦1.8 . (1)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.