Image forming apparatus providing glossiness treatment
US8718529B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2011 |
| Grant date | May 6, 2014 |
| Priority date | — |
| Expiry date | May 1, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00805
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus includes a plurality of image forming stations for forming a toner image having superposed toner image components on a recording material, a fixing portion for fixing the toner image on the recording material, and a glossiness treatment unit, operable when a glossiness treatment mode is selected, for glossiness treatment of the toner image fixed on the recording material by heating the toner image. The glossiness treatment unit includes a film movable in a feeding direction of the recording material, a heating member contacting the film, and a pressing member cooperating with the heating member to form a nip, with the film therebetween, for nipping and feeding the recording material. In the glossiness treatment mode, one of the image forming stations forms, as a topmost layer, a toner image having a tone gradation provided by a dot growth type screening, and an image forming station, other than the one for forming the topmost toner image, forms the toner image having the tone gradation provided by a line growth type screening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.