发明名称 |
Apparatus for acquiring an image of a predetermined extract of a moving printed product |
摘要 |
An apparatus and method for acquiring an image of a predetermined extract of a moving printed product employs at least one black-and-white camera with a two-dimensional electronic image sensor and one or more illumination devices suitable for pulse-like illumination. The illumination device has multiple light sources forming spectral groups that have different spectral compositions. The light sources are arranged in a pattern such that the light sources of each spectral group completely illuminate the area of observation of the camera. A control device switches the individual spectral groups of light sources on and off sequentially such that the area of observation of the camera is illuminated with a sequence of light pulses of different spectral compositions. During each light pulse, the predetermined extract on a printed product moves into the area of observation of the camera, and an image of extract is captured.
|
申请公布号 |
US2006001924(A1) |
申请公布日期 |
2006.01.05 |
申请号 |
US20050042387 |
申请日期 |
2005.01.25 |
申请人 |
MAN ROLAND DRUCKMASCHINEN AG |
发明人 |
TATARCZYK THEODOR |
分类号 |
B41F33/14;H04N1/46;B41F33/00;B41F33/10;G01J1/20;G01J3/46;G03B15/02;G06T1/00;H04N1/00;H04N1/19;H04N9/04 |
主分类号 |
B41F33/14 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|