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Printing Quality Inspection Device

A technology of inspection device and printed matter, applied in printing, printing machine, measuring device and other directions, can solve the problem of not being able to judge whether the pattern is accurately printed, etc., and achieve the effect of high-precision quality inspection

Active Publication Date: 2021-02-09
KOMORI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At this time, if it is desired to check the printing quality of the printed security print by the inspection device, there is a problem that the pattern printed therefrom cannot be read because the light reflected from the partial specular surface of the hologram and / or security thread is too strong. Part of the diffusely reflected light, so it is impossible to judge whether the pattern is printed accurately

Method used

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  • Printing Quality Inspection Device
  • Printing Quality Inspection Device
  • Printing Quality Inspection Device

Examples

Experimental program
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Effect test

no. 1 approach

[0026] based on the following Figure 1 to Figure 7 and Figure 8A , Figure 8B , the first embodiment of the print quality inspection device of the present invention will be described.

[0027] figure 1 The number printing machine generally indicated by the reference numeral 1 in the middle includes: a paper feeding part 2 as a sheet feeding part, which feeds sheets 5 one by one to a paper feeding plate 6; Stamps and numbers are printed on it; and the paper discharge unit 4 as a sheet discharge unit discharges printed sheets.

[0028] The paper feeding section 2 is provided with a stacker 7 as a stacker, and the stacker 7 is used for stacking specular reflection members 5a such as holograms and / or anti-counterfeiting threads attached or processed by other printing machines (refer to Figure 8A , Figure 8B . The sheets 5 on the stacker 7 are sucked one by one by an automatic sheet feeding device (not shown) and sent to the sheet feeding plate 6, and are oscillated The ...

no. 2 approach

[0058] based on the following Figure 9 to Figure 11 , the second embodiment of the print quality inspection device of the present invention will be described.

[0059] Compared with the print quality inspection device of the first embodiment, the print quality inspection device of this embodiment is configured such that the position of the inspection camera 18a is fixed and the position of the light source 18h can be adjusted.

[0060] That is, in the present embodiment, the inspection device 18 can adjust the specular reflection from the specular reflection member 5a of the sheet 5 imaged by the inspection camera 18a by changing the irradiation angle of light with respect to the detection point P by adjusting the position of the light source 18h. The ratio of the intensity of light to the intensity of light diffusely reflected from the pattern portion (number in this embodiment) printed on the specular reflection member 5a. In addition, the position of the inspection camera...

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PUM

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Abstract

The present invention provides a print quality inspection device for a printing machine, which is installed in a printing machine (1) provided with a printing unit (3) on a sheet (5) to which a specular reflection member (5a) is attached. Printing is performed on the specular reflection member (5a). The printing quality inspection device includes: an inspection camera (18a), which photographs the pattern printed on the sheet (5); a light source (18h), which irradiates light to the sheet (5); (18a) Image data taken to check the quality of the pattern printed by the printing section (3), wherein the inspection camera (18a) or the light source (18h) is supported so as to be able to pass through the sheet (5) by the inspection camera ( 18a) Move on an arc centered on the captured detection point (P).

Description

technical field [0001] The present invention relates to a printing quality inspection device for inspecting the printing quality of a pattern printed on a mirror reflection member of a printed matter to which a mirror reflection member is attached. Background technique [0002] A conventionally known printing machine includes an inspection device for inspecting a pattern printed on a printed matter (see, for example, Patent Document 1 below). [0003] Patent Document 1: Japanese Patent Laid-Open Publication No. 2012-135885 [0004] Here, in order to prevent counterfeiting, securities printed matter such as banknotes are usually added or processed with specular reflection members such as holograms and / or anti-counterfeiting threads on the face of the banknotes. In such security printed matter, since each pattern is printed on a surface on which a hologram and / or a security thread etc. are added or processed in advance, the pattern is often printed on the specular reflection ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41F33/00B41F13/00B41M3/14G01N21/88
CPCB41F33/00B41M3/14B41F13/00G01N21/88B41F33/0036B41F11/02B41F33/009B41F33/02B41F33/045B41P2233/10B41F33/14B41F13/0024G01N21/8806
Inventor 沼内裕光须藤崇柳内小百合谷川隆三
Owner KOMORI CORP