Sliding code disc reader and detent therefor for dual pitch web feeding
US4147440A · kind A · utility
2Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 1977 |
| Grant date | Apr 3, 1979 |
| Priority date | — |
| Expiry date | Feb 24, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J11/42
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A code reader, in the form of a photoelectric sensing device, is slidable across a coded disc which disc includes a first circle of apertures at one diameter designating a code channel for advancing record media, for example, at a spacing of six lines per inch and a second circle of apertures at another diameter designating a code channel for advancing the record media at a spacing of eight lines per inch. A positive locking detent is associated with the code reader for maintaining the desired position thereof for the selected code channel and line spacing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.