Device for controlling a transport of printing products by a print-related machine
US6599042B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 23, 2001 |
| Grant date | Jul 29, 2003 |
| Priority date | — |
| Expiry date | Aug 23, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J13/0027
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A device for controlling the transport of a printing product by a print-related machine includes at least one locally stationary photoelectric detector having a light transmitter, by which light is directed at a surface of the printing product, and at least one light receiver for detecting the light remitted from the surface, a device for evaluating the remitted light, the evaluating device having computational equipment connected to adjustment elements for controlling the effect of a cyclically operating transporting device, the light transmitter including a light source for transmitting coherent light, and the light receiver including an element for recording the spatial distribution of the stray light, a timing device provided for synchronizing the instant of time of the recording with the cycle of the transporting device, and the evaluation device having a comparator for the local distribution of the stray light at the instant of time of the recording provided with a prescribed distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.