Boundary display device for division-printing
US4908657A · kind A · utility
11Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 2, 1989 |
| Grant date | Mar 13, 1990 |
| Priority date | — |
| Expiry date | Feb 2, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B27/6242
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A boundary display device is used in a photographic printer performing so-called division-printing by which partial prints are produced from an image frame of a negative film to construct a composite greatly-enlarged print. The boundary display device comprises a transparent plate and lines which represent the boundaries of areas into which a scene of a film frame is nominally divided. The transparent plate is placed in an opening of a film carrier of the printer so as to view how the scene is divided prior to the division-printing. Based on the viewing, the position of the film in the opening is moved slightly if necessary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.