A method for monitoring registration of images printed by a printer

A method for monitoring registration of images printed by a printer

The printer has at least two printing stations (102, 104, 106, 108) which cause images to be printed on a substrate (110). The printer is capable of registration adjustment. First and second patterns (116) of spaced registration marks are printed onto the substrate (110) by operation of the printing...

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1. Verfasser: VAN WEVERBERG, ERIK G. G
Format: Patent
Sprache:eng ; fre ; ger
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CORRECTION OF TYPOGRAPHICAL ERRORS
i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME
LINING MACHINES
PERFORMING OPERATIONS
PRINTING
PRINTING MACHINES OR PRESSES
SELECTIVE PRINTING MECHANISMS
STAMPS
TRANSPORTING
TYPEWRITERS
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creator VAN WEVERBERG, ERIK G. G
description The printer has at least two printing stations (102, 104, 106, 108) which cause images to be printed on a substrate (110). The printer is capable of registration adjustment. First and second patterns (116) of spaced registration marks are printed onto the substrate (110) by operation of the printing stations (102, 104, 106, 108). The second pattern (116) partially overlaps the first pattern (112) to form a composite pattern (120) of registration marks. The composite pattern (120) is illuminated and the reflectivity thereof is examined at wavelengths complementary to the colours of the first and second patterns to obtain a reflectivity signature (SM) for the composite pattern (120). The reflectivity signature (SM) of the composite pattern (120) is compared with a predetermined signature (SO) to determine an adjustment factor (fm, fc, fy) for the printer.
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language eng ; fre ; ger
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subjects CORRECTION OF TYPOGRAPHICAL ERRORS
i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME
LINING MACHINES
PERFORMING OPERATIONS
PRINTING
PRINTING MACHINES OR PRESSES
SELECTIVE PRINTING MECHANISMS
STAMPS
TRANSPORTING
TYPEWRITERS
title A method for monitoring registration of images printed by a printer
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