Bead bypass speed reduction
US3988060A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1974 |
| Grant date | Oct 26, 1976 |
| Priority date | — |
| Expiry date | Jun 4, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G17/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A system for separating one surface, preferably a web, from another surface to enable a bead of accumulated material built up at the line of contact between the two surfaces to pass therebetween. During the separation period, the advancing velocity of at least one surface is reduced so that at least one surface is advanced at a slower rate than its rate prior to separation, or stopped. In a preferred embodiment, the system is employed in photoelectrophoretic imaging to bypass a bead of imaging suspension built up at the imaging nip during separation of two webs immediately after completion of imaging to thereby permit dissipation or passage of the liquid bead. During the separation period, the surface, preferably a web, which does not carry the desired image, is advanced at a slower rate than its prior rate and slower than the other surface, or stopped.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.