Photographic processing apparatus
US6760055B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2002 |
| Grant date | Jul 6, 2004 |
| Priority date | — |
| Expiry date | Jun 21, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/40037
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A photographic processing apparatus according to the present invention exposes photographic papers using a laser beam modulated based on image data and includes a laser beam emitting device. A changeover part changes the level of a driving signal to any one of a plurality of discrete levels according to a coloring characteristic of the photographic paper. The level of the driving signal determines the intensity of the laser beam outputted from the laser beam emitting device in a plurality of levels (for example, three levels consisting of a high level, a middle level and a low level). A filter is also provided to reduce the intensity of the laser beam outputted from the laser beam emitting device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.