Exposure correcting method for a photographic printer and photographic printing apparatus
US5661544A · kind A · utility
8Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1995 |
| Grant date | Aug 26, 1997 |
| Priority date | — |
| Expiry date | Nov 13, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2227/32
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital exposure device which performs the exposure to a dot pattern of light comprises: PA1 scanner 6 for reading density of each dot in the dot pattern on the photosensitive material exposed to predetermined pattern of test image; PA1 a correction circuit 74 for comparing the read density of each dot and the density of a pattern of test image and for delivering a correction data; and PA1 a converter circuit 72 for converting the conversion condition according to the correction data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.