Thickness sensor comprising a leaf spring means, and a light sensor
US5204537A · kind A · utility
78Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1992 |
| Grant date | Apr 20, 1993 |
| Priority date | — |
| Expiry date | Jan 29, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2553/41
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A typical printing device has a document feeder, a printer, and a document transport mechanism for transporting documents from the document feeder to the printer. In accordance with the invention, there is provided a thickness measurer which measures the thickness of a document prior to the transport of the document to the printer, a controller which receives the thickness information and which provides a gap-adjustment signal, and an adjuster which receives the gap-adjustment signal and adjusts the gap accordingly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.