JP4984540B2 - Print mark inspection device - Google Patents

Print mark inspection device Download PDF

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JP4984540B2
JP4984540B2 JP2006008789A JP2006008789A JP4984540B2 JP 4984540 B2 JP4984540 B2 JP 4984540B2 JP 2006008789 A JP2006008789 A JP 2006008789A JP 2006008789 A JP2006008789 A JP 2006008789A JP 4984540 B2 JP4984540 B2 JP 4984540B2
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infrared light
print mark
mark
printed
packaging sheet
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JP2007192572A (en
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元 佐藤
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Toshiba Mitsubishi Electric Industrial Systems Corp
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Description

この発明は、食品や医薬品の包装シートに印字された賞味期限や製造年月日やその他の情報が正しく印字されているかを検査する印字マーク検査装置に関するものである。   The present invention relates to a print mark inspection apparatus for inspecting whether a shelf life, date of manufacture, and other information printed on a food or pharmaceutical packaging sheet are correctly printed.

食品や医薬品などの包装シートには、赤外光すなわち熱線を吸収すると高温になり、内容物が傷みやすいため、赤外光の透過率の高い顔料を使用した印刷塗料で意匠、模様、図柄、色などを印刷している。例えば、印刷塗料の顔料として、アゾ系顔料や、ルチル型二酸化チタンや、ペリレンブラックなどは赤外光の透過率が高く、このような顔料を使用した印刷塗料が広く普及している。また赤外光を吸収する顔料としては、カーボンブラック、アニリンブラック、酸化鉄ブラックなどが知られている（例えば、特許文献１〜４参照）。また、文字や図柄を赤外光の透過率の高い顔料を含む印刷塗料で印刷し、赤外光を含む光を照射し、照射した面を赤外光の感度を持つ撮像装置で撮像し、撮像装置からの映像信号を画像処理したアルミ箔の外観検査がある（例えば、特許文献５参照）。ＰＴＰのカバーフィルムに印刷されたインクのみを赤外光の透過により無視し、カバーフィルム上の異物を判定する外観検査機がある（例えば、特許文献６参照）。また、Ｒ、Ｇ、Ｂ信号を出力するカラー撮像装置で文字を撮像し、輝度を背景に対して強調した画像信号を得る加算手段と、この加算手段の画像信号から文字を検査する印字検査装置がある（例えば、特許文献７参照）。   Packaging sheets for food and pharmaceuticals become hot when absorbing infrared light, that is, heat rays, and the contents are easily damaged, so prints and paints using pigments with high infrared light transmittance design, patterns, designs, Colors are printed. For example, azo pigments, rutile titanium dioxide, perylene black, and the like are high in infrared light transmittance as printing paint pigments, and printing paints using such pigments are widely used. As pigments that absorb infrared light, carbon black, aniline black, iron oxide black, and the like are known (see, for example, Patent Documents 1 to 4). In addition, characters and designs are printed with a printing paint containing a pigment with high infrared light transmittance, irradiated with light containing infrared light, and the irradiated surface is imaged with an imaging device having infrared light sensitivity. There is an appearance inspection of an aluminum foil obtained by image processing of a video signal from an imaging device (see, for example, Patent Document 5). There is an appearance inspection machine for ignoring only ink printed on a PTP cover film by transmitting infrared light and determining foreign matter on the cover film (see, for example, Patent Document 6). Also, an adder that captures a character with a color imaging device that outputs R, G, and B signals and obtains an image signal in which luminance is emphasized with respect to the background, and a print inspection device that inspects the character from the image signal of the adder (See, for example, Patent Document 7).

また、図１２は、従来例による印字マークが印字された包装シートを実際に撮像装置にて撮像した画像を示したものである。図１２で示される画像１０ａは、印字マーク５が印字された包装シート４に白色の蛍光灯光（可視光）を照射し、白黒ＣＣＤカメラで撮像したものである。尚、図中の意匠、模様、図柄、色など２２は、肉眼では白色部分２２ｗ、赤色部分２２ｒ、緑色部分２２ｇ、青色部分２２ｂに区別できる。   FIG. 12 shows an image obtained by actually capturing an image of a packaging sheet on which a print mark according to a conventional example is printed with an imaging device. An image 10a shown in FIG. 12 is obtained by irradiating a white fluorescent lamp light (visible light) onto the packaging sheet 4 on which the print mark 5 is printed, and taking an image with a monochrome CCD camera. In addition, the design, pattern, design, color, and the like 22 in the figure can be distinguished by a naked eye into a white portion 22w, a red portion 22r, a green portion 22g, and a blue portion 22b.

特許第３４０６５０５号公報Japanese Patent No. 3406505 特開２００２−３４８４９１号公報JP 2002-348491 A 特開２００５−１３２４６０号公報JP 2005-132460 A 特開２００５−１３２４６１号公報JP 2005-132461 A 特開２００５−１３２４６２号公報JP 2005-132462 A 特開２００５−２２７３０２号公報JP-A-2005-227302 特許第３０９７０６７号公報Japanese Patent No. 3097067

従来のアルミ箔の外観検査では、印字マークを赤外光の透過率の高い顔料を使用した塗料で印字するため、意匠、模様、図柄、色といったものがマークの下に印刷されていると、印字マークと印字マークの下に印刷された意匠、模様、図柄、色などとを分離することができず、印字マークを検査することができないという問題があった。
また、従来の印字検査装置では、カラー撮像装置と、Ｒ、Ｇ、Ｂそれぞれに加算処理手段が必要で、加算処理手段からの画像で文字を検査するため、時間がかかり、かつ高価な印字検査装置になるという問題があった。 In the appearance inspection of the conventional aluminum foil, because the printed mark is printed with a paint using a pigment having a high infrared light transmittance, if a design, pattern, design, color, etc. are printed under the mark, There has been a problem that the printed mark and the design, pattern, design, color, etc. printed under the printed mark cannot be separated, and the printed mark cannot be inspected.
In addition, the conventional print inspection apparatus requires a color imaging device and R, G, B for each addition processing means, and because it inspects characters with the image from the addition processing means, it takes time and is expensive. There was a problem of becoming a device.

また、従来例の図１２で示される包装シート４と印字された印字マーク５は、白色部分２２ｗを除き、赤色部分２２ｒ、緑色部分２２ｇ、青色部分２２ｂとも暗色に撮像され、その上に印字された印字マーク５も暗色に撮像されるため、意匠、模様、図柄、色など２２と印字マーク５の区別がつきにくくなっているため、印字マーク５を検査することができないという問題があった。   In addition, the packaging sheet 4 shown in FIG. 12 of the conventional example and the printed mark 5 are printed on the red portion 22r, the green portion 22g, and the blue portion 22b in dark colors except for the white portion 22w. Since the print mark 5 is also picked up in a dark color, it is difficult to distinguish between the design mark, pattern, design, color, etc. 22 and the print mark 5, so that the print mark 5 cannot be inspected.

この発明は上記のような課題を解決するためになされたものであり、包装シートに意匠や模様、図柄などが印刷され、その意匠、模様、図柄、色などの上に印字された印字マークを安価に検査できる印字マーク検査装置を得ることを目的とする。またこの印字マーク検査装置によって検査された包装シートで包装された、安全の高い食品や医薬品を得ることを目的とする。   The present invention has been made to solve the above-described problems. Designs, patterns, designs, and the like are printed on a packaging sheet, and printed marks printed on the designs, patterns, designs, colors, etc. An object of the present invention is to obtain a printed mark inspection apparatus that can be inspected at low cost. It is another object of the present invention to obtain highly safe foods and medicines packaged with a packaging sheet inspected by this print mark inspection apparatus.

この発明に係る印字マーク検査装置は、ロール状に巻かれ赤外光の透過率の高い印刷領域がある食品や医薬品などの包装シートに意匠、模様、図柄、色などが印刷されており、ロール状に巻かれた前記包装シートを繰り出し、前記包装シートの赤外光の透過率の高い印刷領域に印字された赤外光の吸収率が高い印字マークを検査する印字マーク検査装置であって、意匠、模様、図柄、色などが印刷され、繰り出される前記包装シートに赤外光の吸収率の高い印字マークを印字する印字手段と、包装シートに印字された印字マークを含む領域に赤外光を照射する赤外光照明手段と、少なくとも赤外光の感度を持ち赤外光が照射された印字マークを含む領域を撮像し、画像を出力する撮像手段と、撮像手段から得られる印字マークを含んだ画像から印字マークを検査する検査手段とを備えたものである。 Printing mark inspection apparatus according to the present invention, design the packaging sheet such as foods and medicines rolled there is a high printing area transmittance of infrared light, pattern, design, color has been printed, the roll feeding said wrapping sheet wound in a Jo, a print mark inspection apparatus infrared light transmittance high printed on the printing area the infrared light absorption rate to inspect high print mark of the package sheet, Design, pattern, design, color, etc. are printed, printing means for printing a print mark with a high absorption rate of infrared light on the package sheet to be fed out, and infrared light in an area including the print mark printed on the package sheet An infrared light illuminating means for irradiating an image, an imaging means for imaging at least an area including a printed mark having infrared light sensitivity and irradiated with infrared light, and a printed mark obtained from the imaging means. Including image Is obtained by a checking means for checking the print mark.

この発明によれば、包装シートに印刷されている意匠や模様や図柄や色などの印刷と印字された印字マークとを赤外光を使用することで分離したので、安定した印字マークが検査できるとともに、装置が簡略化され、高速でかつ安価なものが得られる。   According to the present invention, since the design mark, pattern, design, color, etc. printed on the packaging sheet are separated from the printed print mark by using infrared light, a stable print mark can be inspected. At the same time, the apparatus is simplified, and a high-speed and inexpensive apparatus can be obtained.

実施の形態１．
図１はこの発明の実施の形態１における印字マーク検査装置を示す全体構成図、図２はこの発明の実施の形態１における印字マーク検査装置の印字マークを印字する前の包装シートの一部を示す拡大図、図３はこの発明の実施の形態１における印字マーク検査装置の印字マークを印字した後の包装シートの一部を示す拡大図、図４はこの発明の実施の形態１における印字マーク検査装置の包装シートの赤外光での画像を示す拡大図、図５はこの発明の実施の形態１における印字マーク検査装置の光学系の配置例を示す部分構成図である。 Embodiment 1 FIG.
FIG. 1 is an overall configuration diagram showing a print mark inspection apparatus according to Embodiment 1 of the present invention, and FIG. 2 shows a part of a packaging sheet before printing a print mark of the print mark inspection apparatus according to Embodiment 1 of the present invention. FIG. 3 is an enlarged view showing, FIG. 3 is an enlarged view showing a part of the packaging sheet after printing the print mark of the print mark inspection apparatus according to Embodiment 1 of the present invention, and FIG. 4 is a print mark according to Embodiment 1 of the present invention. FIG. 5 is a partial configuration diagram showing an arrangement example of the optical system of the print mark inspection apparatus according to Embodiment 1 of the present invention.

以下、この発明の実施の形態１を図１に基づいて説明する。図１において、１はピロー包装装置、２はピロー包装装置１を制御する制御部、３はピロー包装装置１にセットされた包装シートロール、４は包装シートロール３から繰り出される包装シート、５は包装シート４に印字された赤外光の吸収率が高い印字マーク、６は包装シート４に印字マーク５を印字する印字部、７は包装シート４に印字された印字マーク５に赤外光を照射する赤外光照明装置、８は赤外光照明装置７から照射される赤外光、９は包装シート４に印字された印字マーク５を撮像する撮像装置、１０は撮像装置９から出力される画像、１１は画像１０が入力される検査装置、１２は検査装置１１が出力する検査結果で、この検査結果１２は制御部２に入力される。１３は制御部２から出力される分類制御信号、１４は分類制御信号１３が入力される分類部、１５は包装前の食品や医薬品などの内容物、１６は包装前の内容物１５を包装シート４で密閉し包装する自動包装部、１７は自動包装部１６で包装シート４に包装された包装後の製品、１８は包装前の内容物１５や包装後の製品１７を搬送する搬送部、１９は包装後の製品１７が分類部１４で良品に分類された印字マーク良製品、２０は包装後の製品１７が分類部１４で不良品に分類された印字マーク不良製品、２１は印字マーク良製品１９を収納する良品収納部である。   A first embodiment of the present invention will be described below with reference to FIG. In FIG. 1, 1 is a pillow packaging device, 2 is a control unit for controlling the pillow packaging device 1, 3 is a packaging sheet roll set in the pillow packaging device 1, 4 is a packaging sheet fed from the packaging sheet roll 3, and 5 is A print mark having a high absorption rate of infrared light printed on the packaging sheet 4, a printing portion 6 for printing the print mark 5 on the packaging sheet 4, and 7, infrared light on the print mark 5 printed on the packaging sheet 4. Infrared light illuminating device to be irradiated, 8 is infrared light irradiated from the infrared light illuminating device 7, 9 is an image capturing device for capturing the print mark 5 printed on the packaging sheet 4, and 10 is output from the image capturing device 9. 11 is an inspection device to which the image 10 is input, and 12 is an inspection result output by the inspection device 11. The inspection result 12 is input to the control unit 2. 13 is a classification control signal output from the control unit 2, 14 is a classification unit to which the classification control signal 13 is input, 15 is a content such as food or medicine before packaging, and 16 is a packaging sheet containing the content 15 before packaging. 4 is an automatic packaging unit that is hermetically sealed and packaged, 17 is a product after packaging that is packaged on the packaging sheet 4 by the automatic packaging unit 16, 18 is a conveyance unit that conveys the content 15 before packaging and the product 17 after packaging, 19 Is a printed mark good product in which the packaged product 17 is classified as a non-defective product by the classification unit 14, 20 is a printed mark defective product in which the packaged product 17 is classified as a defective product in the classification unit 14, and 21 is a printed mark good product. 19 is a non-defective storage unit for storing 19.

次に動作について説明する。図２は印字マークを印字する前の包装シート４の一部を示す。図に示すように、包装シート４は、連続に連なったリボン状で、意匠、模様、図柄、色など２２（特に区別はしない）を赤外光の透過率の高い顔料を使用した印刷塗料で印刷されており、ロール状に巻かれ包装シートロール３となっている。
ピロー包装装置１は、包装シートロール３から包装シート４を印字部６へ繰り出し、印字部６は、包装シート４に、赤外光の吸収率の高い印字マーク５を印字する。図３は印字マーク５を印字した後の包装シート４の一部を示す。包装シート４の印字する部分には、意匠、模様、図柄、色など２２が印刷されている。
ピロー包装装置１は、印字マーク５を印字した包装シート４を赤外光８が照射される位置へ繰り出し、赤外光照明装置７は、印字マーク５を含む領域に、赤外光８を照射する。撮像装置９は、この赤外光８を照射された印字マーク５を含む領域を撮像し、画像１０を出力する。検査装置１１は印字マーク５を含んだ前記画像１０から、印字マーク５を検査し、その検査結果１２を制御部２に出力する。
ピロー包装装置１は、検査された印字マーク５を印字した包装シート４を自動包装部１６へ繰り出し、搬送部１８は、包装前の内容物１５を自動包装部１６へ搬送し、自動包装部１６は、内容物１５を包装シート４で密閉し包装する。搬送部１８は、検査された印字マーク５を印字した包装シート４によって包装された包装後の製品１７を分類部１４へ搬送する。
次いで、制御部２は、印字マーク５の検査結果１２を記憶保持し、搬送された包装後の製品１７が分類部１４に到達したときに、この記憶保持された検査結果１２を基に、分類制御信号１３を出力する。分類制御信号１３は、良品分類と不良品分類に分けられる。
分類部１４は、分類制御信号１３により、検査された印字マーク５を印字した包装シート４によって包装された包装後の製品１７の分類を行う。分類制御信号１３が、良品分類ならば印字マーク良製品１９とし、不良品分類ならば印字マーク不良製品２０とし、行き先を分け分類を行う。印字マーク良製品１９は分類後に良品収納部２１に収納されるので、印字マークの良品と不良品を分別することができ、安全性の高い包装後の製品を得ることができる。 Next, the operation will be described. FIG. 2 shows a part of the packaging sheet 4 before the printing mark is printed. As shown in the figure, the wrapping sheet 4 is a continuous paint ribbon-like design paint, pattern, design, color, etc. 22 (not particularly distinguished) is a printing paint using a pigment having a high infrared light transmittance. It is printed and is wound in a roll shape to form a packaging sheet roll 3.
The pillow packaging apparatus 1 feeds the packaging sheet 4 from the packaging sheet roll 3 to the printing unit 6, and the printing unit 6 prints the printing mark 5 having a high infrared light absorption rate on the packaging sheet 4. FIG. 3 shows a part of the packaging sheet 4 after the printing mark 5 is printed. Designs, patterns, designs, colors, and the like 22 are printed on the portion of the packaging sheet 4 to be printed.
The pillow packaging device 1 feeds the packaging sheet 4 on which the print mark 5 is printed to a position where the infrared light 8 is irradiated, and the infrared light illumination device 7 irradiates the area including the print mark 5 with the infrared light 8. To do. The imaging device 9 images a region including the print mark 5 irradiated with the infrared light 8 and outputs an image 10. The inspection device 11 inspects the print mark 5 from the image 10 including the print mark 5 and outputs the inspection result 12 to the control unit 2.
The pillow packaging device 1 feeds the packaging sheet 4 on which the inspected print mark 5 is printed to the automatic packaging unit 16, and the transport unit 18 transports the contents 15 before packaging to the automatic packaging unit 16. The contents 15 are sealed with the packaging sheet 4 and packaged. The conveyance unit 18 conveys the packaged product 17 packaged by the packaging sheet 4 on which the inspected print mark 5 is printed, to the classification unit 14.
Next, the control unit 2 stores and holds the inspection result 12 of the print mark 5, and when the transported product 17 reaches the classification unit 14, the control unit 2 classifies the inspection result 12 based on the stored and stored inspection result 12. A control signal 13 is output. The classification control signal 13 is divided into a non-defective product classification and a defective product classification.
The classification unit 14 classifies the packaged product 17 packaged by the packaging sheet 4 on which the inspected print mark 5 is printed according to the classification control signal 13. If the classification control signal 13 is a non-defective product classification, the print mark is a good product 19, and if it is a defective product classification, the print mark is a defective product 20. Since the non-defective product 19 is stored in the non-defective product storage unit 21 after classification, the non-defective product and the defective product of the printed mark can be separated, and a highly safe packaged product can be obtained.

図４は、この発明の一例である印字マーク５が印字された包装シート４を実際に撮像装置９にて撮像した画像１０を示す。図４で示される画像１０は、図１２で示された従来例の画像１０ａと同じ包装シート４に、赤外光８を照射し、図１２で示される画像１０ａを撮像したものと同じ白黒ＣＣＤカメラ９で撮像したものである。尚、図中の意匠、模様、図柄、色など２２は、肉眼では白色部分２２ｗ、赤色部分２２ｒ、緑色部分２２ｇ、青色部分２２ｂに区別できる。しかし、図４で示される赤外光８を照射した包装シート４と印字された印字マーク５は、意匠、模様、図柄、色など２２が赤外光８の透過率が高い顔料を使用した印刷塗料で印刷されており、白黒ＣＣＤカメラ９は赤外光８にも感度があるため、白色部分２２ｗを含め、赤色部分２２ｒ、緑色部分２２ｇ、青色部分２２ｂともに、明色に撮像され、その上に印字された印字マーク２２は暗色に撮像されるため、印字マーク５の判別は可能となり、印字マーク５を検査することができるとともに、シンプルな構成で検査装置を構築できるため安価な印字マーク検査装置を得ることができる。   FIG. 4 shows an image 10 obtained by actually capturing an image of the packaging sheet 4 on which the print mark 5, which is an example of the present invention, is printed by the imaging device 9. The image 10 shown in FIG. 4 is the same monochrome CCD as that obtained by irradiating the same packaging sheet 4 as the image 10a of the conventional example shown in FIG. 12 with the infrared light 8 and imaging the image 10a shown in FIG. The image is taken by the camera 9. In addition, the design, pattern, design, color, and the like 22 in the figure can be distinguished by a naked eye into a white portion 22w, a red portion 22r, a green portion 22g, and a blue portion 22b. However, the packaging sheet 4 irradiated with the infrared light 8 shown in FIG. 4 and the printed print mark 5 are printed using a pigment whose design, pattern, design, color, etc. 22 has a high transmittance of the infrared light 8. Since the monochrome CCD camera 9 is printed with paint and is also sensitive to the infrared light 8, the red portion 22r, the green portion 22g, and the blue portion 22b, including the white portion 22w, are imaged in a bright color. Since the print mark 22 printed on the image is picked up in dark color, the print mark 5 can be discriminated, the print mark 5 can be inspected, and an inspection apparatus can be constructed with a simple configuration, so that the print mark inspection is inexpensive. A device can be obtained.

図５はこの発明の一例である光学系の配置を示す。図５において、室内照明２３は、可視光２４を室内に照射している。また、赤外光照明装置７により赤外光８が印字マーク５を印字した包装シート４に照射される。撮像装置９には、レンズ２５の前面に赤外光透過・可視光遮断フィルタ２６を取り付けている。したがって、室内照明２３から包装シート４に照射された可視光は、赤外光透過・可視光遮断フィルタ２６によって遮断され、撮像装置９に達する事は無く、赤外光照明装置７から包装シート４に照射された赤外光８は、赤外光透過・可視光遮断フィルタ２６を透過し、撮像装置９に達するため、良好な画像１０を得ることができる。   FIG. 5 shows an arrangement of an optical system which is an example of the present invention. In FIG. 5, the indoor lighting 23 irradiates the room with visible light 24. Further, infrared light 8 is applied to the packaging sheet 4 on which the print mark 5 is printed by the infrared light illumination device 7. In the imaging device 9, an infrared light transmission / visible light blocking filter 26 is attached to the front surface of the lens 25. Therefore, the visible light irradiated to the packaging sheet 4 from the room illumination 23 is blocked by the infrared light transmission / visible light blocking filter 26 and does not reach the imaging device 9. Since the infrared light 8 applied to the light passes through the infrared light transmission / visible light blocking filter 26 and reaches the imaging device 9, a good image 10 can be obtained.

実施の形態２．
図６はこの発明の実施の形態２における印字マーク検査装置の印字マークを印字した包装シートを示す構造図、図７はこの発明の実施の形態２における印字マーク検査装置の光学系の配置例を示す部分構成図である。
図６に示すように、実施の形態２における包装シート４ａは、アルミ箔などの金属からなる金属をバリア材２７として裏面の透明シート２８と表面の透明シート２９に挟みこんでサンドイッチ構造を構成していて、赤外光８の透過率が高い顔料を使用した印刷塗料で意匠、模様、図柄、色など２２が印刷されている。図７は、前記金属バリア材２７を内包した包装シート４ａの光学系の配置例を示す構成図である。図７で示すように、包装シート４ａの表面に赤外光８の吸収率が高い印字マーク５が印字されていて、赤外光照明装置７は、印字マーク５の側で印字マーク５に赤外光８を照射するよう設置され、撮像装置９は、印字マーク５の側で赤外照明装置７により赤外光８を照射された印字マーク５を撮像するよう設置されている。赤外光照明装置７から印字マーク５に照射された赤外光８は、印字マーク５に吸収され、印字マーク５以外の包装シート４ａに照射した赤外光８は、表面の透明シート２９を透過し、金属バリア材２７で反射し、表面の透明シート２９を再度透過して撮像装置９に達するため、印字マーク５は暗色に撮像され、印字マーク以外の包装シート４ａは明色に撮像され、良好な画像１０を得ることができる。 Embodiment 2. FIG.
FIG. 6 is a structural diagram showing a packaging sheet on which a print mark of a print mark inspection apparatus according to Embodiment 2 of the present invention is printed, and FIG. 7 shows an arrangement example of an optical system of the print mark inspection apparatus according to Embodiment 2 of the present invention. It is a partial block diagram shown.
As shown in FIG. 6, the packaging sheet 4a in the second embodiment has a sandwich structure in which a metal made of metal such as aluminum foil is sandwiched between a transparent sheet 28 on the back surface and a transparent sheet 29 on the front surface as a barrier material 27. In addition, a design, a pattern, a design, a color 22 and the like are printed with a printing paint using a pigment having a high transmittance of infrared light 8. FIG. 7 is a configuration diagram showing an arrangement example of the optical system of the packaging sheet 4 a including the metal barrier material 27. As shown in FIG. 7, a print mark 5 having a high absorption rate of infrared light 8 is printed on the surface of the packaging sheet 4 a, and the infrared light illuminating device 7 displays red on the print mark 5 on the print mark 5 side. The imaging device 9 is installed so as to irradiate the external light 8, and the imaging device 9 is installed so as to image the printing mark 5 irradiated with the infrared light 8 by the infrared illumination device 7 on the side of the printing mark 5. The infrared light 8 applied to the print mark 5 from the infrared light illumination device 7 is absorbed by the print mark 5, and the infrared light 8 applied to the packaging sheet 4 a other than the print mark 5 passes through the transparent sheet 29 on the surface. Since it passes through, is reflected by the metal barrier material 27, passes through the transparent sheet 29 on the surface again, and reaches the image pickup device 9, the print mark 5 is picked up in dark color, and the packaging sheet 4a other than the print mark is picked up in light color. A good image 10 can be obtained.

実施の形態３．
図８はこの発明の実施の形態３における印字マーク検査装置の印字マークを印字した包装シートの構成例と光学系の配置例を示す部分構成図である。
上記実施の形態２では、金属バリア材２７を内包した包装シート４ａについて述べたが、この実施の形態３においては、図８で示すように、包装シート４ｂは、金属バリア材２７を必要とせず、透明シート２９に赤外光８の透過率が高い顔料を使用した印刷塗料で意匠、模様、図柄、色など２２が印刷され、表面に赤外光の吸収率が高い印字マーク５が印字されている。尚、包装シート４ａの裏面側の反射板３０は、赤外光照明装置７と、前記包装シート４ｂを挟んで対向する位置に設置されている。赤外光照明装置７から印字マーク５に照射された赤外光８は、印字マーク５に吸収され、印字マーク５以外の包装シート４ｂに照射した赤外光８は、包装シート４ｂを透過し、裏面の反射板３０で反射し、包装シート４ｂを再度透過して撮像装置９に達するため、印字マーク５は暗色に撮像され、印字マーク５以外の包装シート４ｂは明色に撮像され、良好な画像１０を得ることができる。 Embodiment 3 FIG.
FIG. 8 is a partial configuration diagram showing a configuration example of a packaging sheet on which a print mark of a print mark inspection apparatus according to Embodiment 3 of the present invention is printed and an arrangement example of an optical system.
In the second embodiment, the packaging sheet 4a including the metal barrier material 27 is described. However, in the third embodiment, the packaging sheet 4b does not require the metal barrier material 27 as shown in FIG. The design, pattern, design, color, etc. 22 are printed on the transparent sheet 29 using a pigment having a high transmittance of infrared light 8 and the print mark 5 having a high infrared light absorption rate is printed on the surface. ing. In addition, the reflecting plate 30 on the back side of the packaging sheet 4a is installed at a position facing the infrared light illumination device 7 with the packaging sheet 4b interposed therebetween. The infrared light 8 applied to the print mark 5 from the infrared light illumination device 7 is absorbed by the print mark 5, and the infrared light 8 applied to the packaging sheet 4b other than the print mark 5 passes through the packaging sheet 4b. Since the light is reflected by the reflection plate 30 on the back surface, passes through the packaging sheet 4b again, and reaches the imaging device 9, the print mark 5 is imaged in a dark color, and the packaging sheet 4b other than the print mark 5 is imaged in a light color, which is good An image 10 can be obtained.

実施の形態４．
図９はこの発明の実施の形態４における印字マーク検査装置の印字マークを印字した包装シートの構成例と光学系の配置例を示す部分構成図である。
上記実施の形態３では、裏面側の反射板３０を赤外光照明装置７と包装シート４ｂを挟んで対向する位置に設置したが、この実施の形態４においては、図９に示すように、赤外光照明装置７を撮像装置９と包装シート４ｂを挟んで対向する位置に設置したものである。赤外光照明装置７から印字マーク５に照射された赤外光８は、印字マーク５に吸収され、印字マーク５以外の包装シート４ｂに照射した赤外光８は、包装シート４ｂを透過して撮像装置９に達するため、印字マーク５は暗色に、印字マーク以外の包装シート４ｂは明色に撮像され、良好な画像１０を得ることができる。 Embodiment 4 FIG.
FIG. 9 is a partial configuration diagram showing a configuration example of a packaging sheet on which a print mark of a print mark inspection apparatus according to Embodiment 4 of the present invention is printed and an arrangement example of an optical system.
In the third embodiment, the reflector 30 on the back side is installed at a position facing the infrared illumination device 7 and the packaging sheet 4b, but in this fourth embodiment, as shown in FIG. The infrared light illumination device 7 is installed at a position facing the imaging device 9 and the packaging sheet 4b. The infrared light 8 applied to the print mark 5 from the infrared light illumination device 7 is absorbed by the print mark 5, and the infrared light 8 applied to the packaging sheet 4b other than the print mark 5 passes through the packaging sheet 4b. Therefore, the print mark 5 is picked up in a dark color, and the packaging sheet 4b other than the print mark is picked up in a light color, and a good image 10 can be obtained.

実施の形態５．
図１０はこの発明の実施の形態５における印字マーク検査装置の光学系の配置例を示す部分構成図である。
実施の形態３では、実施の形態２を基に説明したため、包装シート４ｂの表面に印字された印字マーク５と同じ側に赤外光照明装置７と撮像装置９を設置したが、図１０で示すように、印字マーク５が印字された包装シート４ｂの表面側でなく、反対側の包装シート４ｂの裏面側に赤外光照明装置７と撮像装置９を設置し、反射板３０を包装シート４ｂの表面側に設置しても同様な効果が得られる。 Embodiment 5 FIG.
FIG. 10 is a partial configuration diagram showing an arrangement example of the optical system of the print mark inspection apparatus according to the fifth embodiment of the present invention.
Since the third embodiment has been described based on the second embodiment, the infrared illumination device 7 and the imaging device 9 are installed on the same side as the print mark 5 printed on the surface of the packaging sheet 4b. As shown, the infrared light illumination device 7 and the imaging device 9 are installed not on the front surface side of the packaging sheet 4b on which the print mark 5 is printed but on the back surface side of the packaging sheet 4b on the opposite side, and the reflection plate 30 is placed on the packaging sheet. Even if it is installed on the surface side of 4b, the same effect can be obtained.

実施の形態６．
図１１はこの発明の実施の形態６における印字マーク検査装置の光学系の配置例を示す部分構成図である。
実施形態４では、実施形態２を基に説明したため、包装シート４ｂの表面に印字された印字マーク５と同じ側に撮像装置９を設置したが、図１１で示すように、印字マーク５が印字された包装シート４ｂの表面側でなく、反対側の包装シート４ｂの裏面側に撮像装置９を設置し、赤外光照明装置７を包装シート４ｂの表面側に設置しても同様な効果が得られる。 Embodiment 6 FIG.
FIG. 11 is a partial configuration diagram showing an arrangement example of the optical system of the print mark inspection apparatus according to Embodiment 6 of the present invention.
In Embodiment 4, since it demonstrated based on Embodiment 2, although the imaging device 9 was installed in the same side as the printing mark 5 printed on the surface of the packaging sheet 4b, the printing mark 5 is printed as shown in FIG. The same effect can be obtained even when the imaging device 9 is installed on the back side of the opposite packaging sheet 4b and the infrared illumination device 7 is installed on the front side of the packaging sheet 4b, not on the front side of the packaging sheet 4b. can get.

この発明の実施の形態１における印字マーク検査装置を示す全体構成図である。1 is an overall configuration diagram illustrating a print mark inspection apparatus according to Embodiment 1 of the present invention. この発明の実施の形態１における印字マーク検査装置の印字マークを印字する前の包装シートの一部を示す拡大図である。It is an enlarged view which shows a part of packaging sheet before printing the printing mark of the printing mark inspection apparatus in Embodiment 1 of this invention. この発明の実施の形態１における印字マーク検査装置の印字マークを印字した後の包装シートの一部を示す拡大図である。It is an enlarged view which shows a part of packaging sheet after printing the printing mark of the printing mark inspection apparatus in Embodiment 1 of this invention. この発明の実施の形態１における印字マーク検査装置の包装シートの赤外光での画像を示す拡大図である。It is an enlarged view which shows the image in the infrared light of the packaging sheet of the printed mark inspection apparatus in Embodiment 1 of this invention. この発明の実施の形態１における印字マーク検査装置の光学系の配置例を示す部分構成図である。It is a partial block diagram which shows the example of arrangement | positioning of the optical system of the printed mark inspection apparatus in Embodiment 1 of this invention. この発明の実施の形態２における印字マーク検査装置の印字マークを印字した包装シートを示す構造図である。It is a structural diagram which shows the packaging sheet which printed the printing mark of the printing mark inspection apparatus in Embodiment 2 of this invention. この発明の実施の形態２における印字マーク検査装置の光学系の配置例を示す部分構成図である。It is a partial block diagram which shows the example of arrangement | positioning of the optical system of the printed mark inspection apparatus in Embodiment 2 of this invention. この発明の実施の形態３における印字マーク検査装置の印字マークを印字した包装シートの構成例と光学系の配置例を示す部分構成図である。It is a partial block diagram which shows the structural example of the packaging sheet which printed the printing mark of the printed mark inspection apparatus in Embodiment 3 of this invention, and the example of arrangement | positioning of an optical system. この発明の実施の形態４における印字マーク検査装置の印字マークを印字した包装シートの構成例と光学系の配置例を示す部分構成図である。It is a partial block diagram which shows the structural example of the packaging sheet which printed the printing mark of the printed mark inspection apparatus in Embodiment 4 of this invention, and the example of arrangement | positioning of an optical system. この発明の実施の形態５における印字マーク検査装置の光学系の配置例を示す部分構成図である。It is a partial block diagram which shows the example of arrangement | positioning of the optical system of the printed mark inspection apparatus in Embodiment 5 of this invention. この発明の実施の形態６における印字マーク検査装置の光学系の配置例を示す部分構成図である。It is a partial block diagram which shows the example of arrangement | positioning of the optical system of the printed mark inspection apparatus in Embodiment 6 of this invention. 従来による印字マーク検査装置の包装シートの赤外光での画像を示す拡大図である。It is an enlarged view which shows the image in the infrared light of the packaging sheet of the conventional printing mark test | inspection apparatus.

符号の説明Explanation of symbols

１ ピロー包装装置
２ 制御部
３ 包装シートロール
４、４ａ、４ｂ 包装シート
５ 印字マーク
６ 印字部
７ 赤外光照明装置
８ 赤外光
９ 撮像装置
１０ 画像
１１ 検査装置
１２ 検査結果
１３ 分類制御信号
１４ 分類部
１５ 包装前の内容物
１６ 自動包装部
１７ 包装後の製品
１８ 搬送部
１９ 印字マーク良製品
２０ 印字マーク不良製品
２１ 良品収納部
２２ 意匠、模様、図柄、色など
２３ 室内照明
２４ 可視光
２５ レンズ
２６ 赤外光透過・可視光遮断フィルタ
２７ 金属バリア材
２８、２９ 透明シート
３０ 反射板 DESCRIPTION OF SYMBOLS 1 Pillow packaging apparatus 2 Control part 3 Packaging sheet roll 4, 4a, 4b Packaging sheet 5 Print mark 6 Printing part 7 Infrared light illuminating device 8 Infrared light 9 Imaging device 10 Image 11 Inspection apparatus 12 Inspection result 13 Classification control signal 14 Classification unit 15 Contents before packaging 16 Automatic packaging unit 17 Product 18 after packaging 18 Transport unit 19 Print mark good product 20 Print mark defective product 21 Good product storage unit 22 Design, pattern, design, color, etc. 23 Indoor lighting 24 Visible light 25 Lens 26 Infrared light transmission / visible light blocking filter 27 Metal barrier materials 28 and 29 Transparent sheet 30 Reflecting plate

Claims (4)

ロール状に巻かれ赤外光の透過率の高い印刷領域がある食品や医薬品などの包装シートに意匠、模様、図柄、色などが印刷されており、ロール状に巻かれた前記包装シートを繰り出し、前記包装シートの赤外光の透過率の高い印刷領域に印字された赤外光の吸収率が高い印字マークを検査する印字マーク検査装置であって、
意匠、模様、図柄、色などが印刷され、繰り出される前記包装シートに赤外光の吸収率の高い印字マークを印字する印字手段と、
前記包装シートに印字された印字マークを含む領域に赤外光を照射する赤外光照明手段と、
少なくとも赤外光の感度を持ち前記赤外光が照射された前記印字マークを含む領域を撮像し、画像を出力する撮像手段と、
前記撮像手段から得られる前記印字マークを含んだ画像から印字マークを検査する検査手段と、
を備えたことを特徴とする印字マーク検査装置。 Design the packaging sheet such as foods and medicines rolled there is a high printing area transmittance of infrared light, pattern, design, color has been printed, feeding the packaging sheet wound into a roll , A print mark inspection device for inspecting a print mark having a high absorption rate of infrared light printed on a print region having a high infrared light transmittance of the packaging sheet,
A printing means for printing a design mark, a pattern, a pattern, a color, etc., and printing a print mark having a high absorption rate of infrared light on the package sheet to be fed out,
Infrared light illuminating means for irradiating infrared light to a region including a print mark printed on the packaging sheet;
An image pickup means for picking up an image of an area including the print mark irradiated with the infrared light having at least infrared light sensitivity, and outputting an image;
Inspection means for inspecting a print mark from an image including the print mark obtained from the imaging means;
A printed mark inspection apparatus characterized by comprising: ロール状に巻かれ赤外光の透過率の高い印刷領域がある食品や医薬品などの包装シートに意匠、模様、図柄、色などが印刷されており、ロール状に巻かれた前記包装シートを繰り出し、前記包装シートの赤外光の透過率の高い印刷領域に印字された赤外光の吸収率が高い印字マークを検査する印字マーク検査装置であって、
意匠、模様、図柄、色などが印刷され、繰り出される前記包装シートに赤外光の吸収率の高い印字マークを印字する印字手段と、
前記包装シートに印字された印字マークを含む領域に赤外光を照射する赤外光照明手段と、
少なくとも赤外光の感度を持ち前記赤外光が照射された前記印字マークを含む領域を撮像し、画像を出力する撮像手段と、
前記撮像手段から得られる前記印字マークを含んだ画像から印字マークを検査する検査手段と、
前記印字マークの検査結果を基に分類制御信号を出力する制御手段と、
前記分類制御信号により、検査された印字マークを印字した包装シートによって包装された包装後の食品や医薬品などを分類する分類手段と、
を備えたことを特徴とする印字マーク検査装置。 Design the packaging sheet such as foods and medicines rolled there is a high printing area transmittance of infrared light, pattern, design, color has been printed, feeding the packaging sheet wound into a roll , A print mark inspection device for inspecting a print mark having a high absorption rate of infrared light printed on a print region having a high infrared light transmittance of the packaging sheet,
A printing means for printing a design mark, a pattern, a pattern, a color, etc., and printing a print mark having a high absorption rate of infrared light on the package sheet to be fed out,
Infrared light illuminating means for irradiating infrared light to a region including a print mark printed on the packaging sheet;
An image pickup means for picking up an image of an area including the print mark irradiated with the infrared light having at least infrared light sensitivity, and outputting an image;
Inspection means for inspecting a print mark from an image including the print mark obtained from the imaging means;
Control means for outputting a classification control signal based on the inspection result of the print mark;
Classification means for classifying the food or medicine after packaging, which is packaged by the packaging sheet printed with the inspected print mark by the classification control signal,
A printed mark inspection apparatus characterized by comprising: 撮像手段は、可視光及び赤外光に感度を持つ撮像装置であって、撮像装置に赤外光のみを透過する赤外光透過・可視光遮断フィルタを設置したことを特徴とする請求項１又は請求項２記載の印字マーク検査装置。   The imaging device is an imaging device having sensitivity to visible light and infrared light, and an infrared light transmission / visible light blocking filter that transmits only infrared light is installed in the imaging device. Or the printed mark inspection apparatus of Claim 2. 分類手段は、分類制御信号により、印字マーク良製品と印字マーク不良製品に分別することを特徴とする請求項２記載の印字マーク検査装置。   3. The print mark inspection apparatus according to claim 2, wherein the classification means classifies the print mark good product and the print mark defective product according to a classification control signal.
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