A printer for printing a certain image on a sheet of developing paper
US4945382A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 3, 1988 |
| Grant date | Jul 31, 1990 |
| Priority date | — |
| Expiry date | Jun 3, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2227/325
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a printing apparatus, a relatively long film having a photosensitive surface composed of photosensitive microcapsules is withdrawn from a supply spool and selectively exposed to light to form a photographed film frame prior to being passed through a nip between urged-together press rollers and then wound onto a take-up spool, sheets of developing paper are delivered one at a time by a paper supply roller from a stack of the sheets for passage between the press rollers with each delivered sheet facing a respective exposed area of the film so as to be pressed together therewith, and a roller drive assembly including a first reversible motor operative in first and second directions in printing and rewinding modes, respectively, a first transmission including a first one-way clutch through which the first motor drives the paper supply roller means only when the first motor operates in the first direction in the printing mode, a second transmission including a second one-way clutch through which the supply spool is rotated in a direction to rewind the film only when the first motor operates in the second direction in the rewinding mode, and a second reversible motor operative in firs…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.