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The printing process relevant characteristics of paper |
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2. Compressibility
(strip light projection under pressure) |
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1. Characteristic: Compressibility |
2. Measuring principle: indirect determination of characteristics
Strip light projection determines a height information in an area raster of 1600 x 1200
(1,92 million pixel) with an evaluabe resolution of 0,1
µm within 6 seconds.
The paper is pressed against a visually transparent plate
with line pressure corresponding to the printing process. |
3. Measurements - results at defined pressure
Calculation of mathematic dominated algorithm:
Roughness and values according DIN EN ISO 4488 and 4487,
roughness µm,
surface volume in cm³/m²
Scarredness index according Dr. Praast
Critical heights and valleys with number and area, measurements in µm selectable.
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4. Significance for the printing process
- Ink transfer, ink consumption, colour impression, ink stand, ink construction
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Comparison of topography with and without contact pressure provides information about the printing process - repititions and
different moisture levels are possible
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Printing phenomenon: Mottling, Missing Dots, Ghosting.
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Automated |
paper test for manufacturing and processing |
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3D Automate,
the modular measurings system
for automated determination,
analysis and evaluation of
printing process relevant
paper characteristics
- 3D Topography
- Compressibility
- Climate control
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