Process and apparatus for the printing of digital image information
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Mar 21, 2002
app pub date -
Sep 18, 2001
filing date -
Sep 21, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A remission sensor is provided in an inkjet printing apparatus for various measurement tasks, which sensor is constructed for densiometric and colorimetric measurement tasks and has a high local resolution. In a first application, the borders of the picture carrier are detected and the printing of pixels of the digital image located outside the borders prevented. This permits the manufacture of borderless pictures without the wasting of printing ink. In a second application, the sensor is used for the photoelectric scanning or measurement of co-printed print head test patterns. The functional condition of the print head(s) can be determined by analysis of the measurement data obtained with suitable algorithms, and corresponding measures can be initiated. In this way the production of waste can be prevented. In a further application, the sensor is also used for the measurement of co-printed color test patterns. Changes in the color reproduction quality can be recognized in time with measurement technology by analysis of the measurement data obtained and comparison thereof with corresponding reference values, and the changes can be corrected by suitable measures.
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