Method for automatically checking the printing quality of a multicolor image
US6301374A · kind A · utility
4Cited by
17References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 17, 1997 |
| Grant date | Oct 9, 2001 |
| Priority date | — |
| Expiry date | Mar 17, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41F33/0036
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A sheet of paper (1) with the image to be checked passes in front of a camera (3) designed to capture three chromatic images and to emit three signals (S1, S2, S3). These signals are introduced into a device (4) applying a function F which comprises coefficients (K1, K2, K3, K10, K20, K30) previously recorded in a suitable device (2). The single signal (5) resulting from the function F is delivered to a device (6) for checking the printing quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.