Image forming apparatus using hypochromatic toner and hyperchromatic toner
US7343112B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 21, 2004 |
| Grant date | Mar 11, 2008 |
| Priority date | — |
| Expiry date | Aug 25, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G13/01
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The image forming apparatus has an image forming portion capable of forming an image on a transferring medium by the use of a hypochromatic toner and a hyperchromatic toner of substantially the same color. The image forming portion is provided with a developing device for developing with the hypochromatic toner and the hyperchromatic toner, wherein, in an image area in which the hyperchromatic toner and the hypochromatic toner are mixedly present, the recording rate of the hyperchromatic toner is 1/16, the minimum size Wmini of a toner image of the hyperchromatic toner is 50 μm or less on the transferring medium. Thereby, it is achieved to reduce graininess.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.