Optical registration system for label printer cutter attachment
US5823692A · kind A · utility
27Cited by
11References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1997 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Apr 28, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2557/61
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A detector assembly for detecting registration marks on a printed sheet when different color printing on different colored sheets is present has a pair of light sources and a light sensor. The light sources are of different colors selected to be complimentary such that one light source or the other will be capable of detecting a substantial range of contrasting registration marks placed on sheets that can be of various colors. Controls are used for selecting the light source that provides an output sensed by a light sensor when passing over the registration marks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.