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Print quality examination device

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

Active Publication Date: 2019-05-03
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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  • Print quality examination device
  • Print quality examination device
  • Print quality examination device

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Experimental program
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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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Abstract

A print quality examination device is provided in a printing machine (1) provided with a printing unit (3) that performs printing on a mirror-reflection member (5a) of a sheet (5) to which the mirror-reflection member (5a) is added. The print quality examination device of the printing machine is provided with an examination camera (18a) that images a picture printed on the sheet (5), a light source (18h) that irradiates the sheet (5) with light, and a print quality examination unit (18g) that examines the quality of the picture printed by the printing unit (3) based on image data imaged by theexamination camera (18a). The examination camera (18a) or the light source (18h) is configured to be movably supported on an arc about a detection point (P) imaged by the examination camera (18a) forthe sheet (5).

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 Applications(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