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Sheet quality control device

A technology of printed sheets and equipment, which is applied in the field of equipment for checking the quality of printed sheets, and can solve problems such as wrong numbering and cutting tickets

Inactive Publication Date: 2007-12-26
KBA NOTASYS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, stacks of picked sheets can be mistakenly numbered and cut without careful handling and thus defective tickets can be put into circulation

Method used

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  • Sheet quality control device
  • Sheet quality control device
  • Sheet quality control device

Examples

Experimental program
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Embodiment Construction

[0051] FIG. 1 shows a basic construction of the device according to the invention. The first structural group of the device is a sheet feeder 01 . The samples to be processed, here the printed sheets, are each fed in a stack 02 to this feeder 01 . A lifting table 03 of the sheet feeder 01 lifts the stack 02 to a predetermined height for the uppermost printed sheets, at which height the printed sheets are removed from the stack 02 by means of horizontally movable suction cups and Lateral movement in the direction of a conveyor table 04. The conveyor belt of the conveyor table transports a printed sheet, in particular a banknote printed sheet, until it comes into contact with a suction roller 06 , on which the printed sheet adheres and controls its rotation, for the printed sheet to be thus conveyed further to a feed roller 07 , so that the front edge of the printed sheet can be picked up by the gripper on the conveying cylinder 07 .

[0052]An inspection module 31 follows th...

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PUM

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Abstract

The invention relates to a device for controlling a sample quality comprising a first inspection unit for detecting image data of the upper surface of a sample front face and an evaluation unit for estimating the sample quality on the base of detection results of the inspection unit. A second inspection unit makes it possible to detect the rear face of the sample and a third inspection unit makes it possible to expose the sample to a radiation.

Description

technical field [0001] The invention relates to a device for checking the quality of printed sheets, comprising a first checking device for determining surface image data of the front side of the printed sheet and an evaluation device for evaluating the quality of the printed sheet on the basis of the detection results of the checking device. Background technique [0002] In the production of banknotes and other valuable documents, very high requirements are placed on the printing quality to ensure that the documents in circulation have as consistent a phenotype (Erscheinungsbild, appearance characteristics) as possible, which can make only a slight difference from a standard phenotype. Differential documents are reliably identified as counterfeit. This consistent phenotype can only be guaranteed during the manufacture of documents of value by a strict quality control, in which all documents that differ only slightly from the standard are selected. This quality check is car...

Claims

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Application Information

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IPC IPC(8): G07D7/12G07D7/00
CPCG07D7/128G07D7/12
Inventor G·J·赖因哈德V·R·施维茨基M·G·施特尔J·G·沙德
Owner KBA NOTASYS SA