Method and apparatus for automatic densitometer alignment
US5208655A · kind A · utility
4Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1991 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Aug 7, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41F33/0036
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for automatically establishing the position of a printed sample relative to a densitometer. The sample is placed on a measurement table. A target incorporated with the sample causes a step change in the densitometer output signal when the target is scanned by the densitometer. By analyzing the step change, the location of the target relative to the measurement table is determined. The location of all points on the sample are known relative to the target, thus the location of all points on the sample relative to the measurement table can be determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.