JP3606493B2 - Wet print - Google Patents
Wet print Download PDFInfo
- Publication number
- JP3606493B2 JP3606493B2 JP15212996A JP15212996A JP3606493B2 JP 3606493 B2 JP3606493 B2 JP 3606493B2 JP 15212996 A JP15212996 A JP 15212996A JP 15212996 A JP15212996 A JP 15212996A JP 3606493 B2 JP3606493 B2 JP 3606493B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- printed
- paper
- ink
- wetting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は、水濡れを嫌う機器内部に貼着されて、水濡れ感知に使用される水濡れ感知印刷物に関する。
【０００２】
【従来の技術】
雨等が機器内部に浸透し、故障が発生しやすい携帯電話等の電子機器や精密機器において、メーカーの製品保証期間内に故障が発生して修理を行なう際に、その故障の原因を特定し、メーカーの保証責任の有無を判別する必要がある。そのため、故障の原因となった水濡れの経緯の確認が必要とされるが、その故障が製品出荷後における水との接触により発生したか否かを判別する最適な方法がこれまで無かった。
【０００３】
【発明が解決しようとする課題】
本発明は、水濡れ等により故障が発生しやすい携帯電話等の電子機器や精密機器の内部に貼着されて、製品出荷後における水濡れを感知することを可能とする印刷物の提供を課題とする。
【０００４】
【課題を解決するための手段】
本発明の水濡れ感知印刷物は、水をはじきにくい用紙に、水濡れ感知用マークを水溶性染料を含有した水無平版用印刷インキを使用して水無平版印刷した水濡れ感知印刷物であって、水に触れると前記水溶性染料が印刷部分から溶出し、前記用紙における非印刷部分に滲みだすものであることを特徴とする。
【０００５】
本発明の水濡れ感知印刷物は、水をはじきにくい用紙に、水濡れ感知用マークを水溶性染料及び隠蔽用顔料を含有した水無平版用印刷インキを使用して水無平版印刷した水濡れ感知印刷物であって、水に触れると前記水溶性染料が印刷部分から溶出し、前記用紙における非印刷部分に滲みだすものであることを特徴とする。
【０００６】
上記の水濡れ感知印刷物が、水濡れを嫌う機器内部に貼着され、水濡れ感知に使用されるものであることを特徴とする。
【０００７】
【発明の実施の形態】
本発明における水無平版用印刷インキは、樹脂、溶剤、植物油、水溶性染料または水溶性染料及び隠蔽用顔料、助剤であるドライヤー、界面活性剤等からなる。
【０００８】
樹脂としては、ロジン変性フェノール樹脂、アルキッド樹脂、石油樹脂等が挙げられ、インキ中、２０重量％〜３０重量％の含有量とされる。
【０００９】
また、溶剤としては、パラフィン系、イソパラフィン系、ナフテン系、芳香族系、α−オレフィン系溶剤であって、沸点範囲が２００〜４００℃のものであり、インキ中、１０重量％〜３０重量％の含有量とされる。
【００１０】
植物油としては、アマニ油、オイシチカ油、綿実油、サフラワー油、大豆油、トール油、脱水ヒマシ油、桐油等が挙げられ、更にこれらの重合体及びこれらの構成成分てある脂肪酸が挙げられ、インキ中、１０重量％〜２５重量％の含有量とされる。
【００１１】
本発明の水無平版用印刷インキにおいては、着色剤としては水溶性染料単独でもよいが、好ましくは隠蔽用顔料と共に使用することにより水濡れ感知の確認を容易とすることができる。
【００１２】
水溶性染料は、水に触れると印刷部分から溶出し、用紙における非印刷部分に滲みだし、水濡れを視覚で感知することを可能とするものであり、インキ中に分散性を有するものであれば使用できる。安全性の観点から食用色素の使用が好ましく、例えば食用黄色４号、食用赤色１０４号、同３号、食用青色１号、同２号等が挙げられる。インキ中の水溶性染料の含有量は２重量％〜３０重量％、好ましくは５重量％〜１５重量％であり、２重量％より少ないと発色濃度が不足し、３０重量％を越えると水溶性染料のインキ中への均一分散性が困難となる。
【００１３】
隠蔽用顔料としては、インキ塗膜中に分散している水溶性染料の色を隠し、水濡れをした時に水溶性染料が分離し、水溶性染料の色を際立たせることを可能とするものであり、インキ用顔料として公知の無機顔料、有機顔料を使用できるが、隠蔽性の観点からはカーボンブラック等の墨色またはこれに近い色が効果的である。顔料のインキ中における含有量としては１重量％〜３０重量％、好ましくは１．６重量％〜１５重量％であり、１重量％より少ないと隠蔽性が充分でなく、３０重量％を越えるとインキ中への分散性や印刷適性を確保することが困難となる。
【００１４】
なお、水溶性染料と隠蔽性顔料とのインキ中における総含有量としては、３重量％〜４０重量％、好ましくは７重量％〜３０重量％とするとよい。
【００１５】
また、助剤としては、界面活性剤、ドライヤー等が挙げられる。界面活性剤は、水に濡れた際に水溶性染料の溶出を一層容易にするために、必要に応じて添加される。界面活性剤として従来公知のアニオン系、カチオン系、ノニオン系界面活性剤が挙げられ、例えばポリオキシエチレングリコールオレイルエステル、ドデシルベンゼンスルフォン酸ナトリウム、ポリオキシエチレンアルキルアミン等である。界面活性剤の添加量としては、インキ中、５重量％以下であり、５重量％を越えると印刷時に地汚れを起こしやすく好ましくない。
【００１６】
ドライヤーは、インキ乾燥性の向上を目的に添加されるものであり、例えば日本触媒（株）マンガンドライヤー、コバルトドライヤー等が挙げられる。ドライヤーの添加量としては、インキ中、５重量％以下であり、５重量％を越えると印刷機つぼ上の膜はりやローラー上でのインキ安定性に難があり好ましくない。
【００１７】
また、水溶性染料の分散性の改良と、インキ粘度の経時的安定性を目的として、上述したインキ組成におけるビヒクルとして、特開平８−６００５８号公報で開示されるロジン変性フェノール樹脂とイソホロンジイソシアネートウレチジオン誘導体との反応物、またはロジン変性フェノール樹脂と植物油との混合物とイソホロンジイソシアネートウレチジオン誘導体との反応物を使用することができる。
【００１８】
本発明の水濡れ感知印刷物における用紙としては、水をはじきにくい、例えば上質紙、普通紙、塗工量の少ない用紙を使用するとよい。
【００１９】
本発明の水濡れ感知印刷物は、上記の水無平版用印刷インキを印刷して得られるが、その版材には水なし平版が使用される。これは非画線部分がシリコンゴム層で構成され、その離型性を利用するもので、湿し水を使用しないようにしたものである。このような版材としては、ＴＡＰ版〔東レ（株）製〕があり、平凹版として版深の深いものを使用すると着肉量を増やす点で有用である。また、印刷機としては、従来公知の多色オフセット印刷機を使用でき、枚葉グラビア印刷や活版印刷等と比較して印刷の高速化と共に、印刷精度の向上が可能である。
以下、実施例により具体的に説明する。
【００２０】
【実施例】
【００２１】
（印刷）
上記で調製した水無平版用印刷インキの印刷適性と、水濡れ感知特性を評価するために、オフセット印刷機（リスロン２６型印刷機、小森コーポレーション製）に、円形輪状の着肉部構成した水濡れ感知用マークを製版、刷版したＴＡＰ版（東レ（株）製）を取付け印刷した。用紙はサンフラワー１２８．５ｇ／ｍ２ （新王子製紙（株）製）を使用し、版面温度２７〜３２℃、印刷速度８０００ｒｐｈで５０００枚印刷した。
【００２２】
得られた印刷物を４８時間放置した後、印刷部を水を含ませた綿棒で擦ることにより水を着け、非印刷部である白色部が染料により着色する度合いを確認したところ、水がついた部分の印刷部から赤色の水溶性染料が滲みだし、白色部に赤く滲み出し、水濡れを感知しうるものであることが確認された。
【００２３】
【発明の効果】
本発明の水濡れ感知印刷物は、水濡れ等により故障が発生しやすい携帯電話等の電子機器や精密機器の内部に貼着されて、製品出荷後における水濡れを感知することを可能とするもので、その故障の原因を特定するのに有用である。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wetness-sensing printed matter that is attached to the inside of a device that dislikes wetness and is used for sensing wetness.
[0002]
[Prior art]
In the case of electronic devices such as mobile phones and precision devices that are prone to failure due to rain permeating inside the device, specify the cause of the failure when repairs occur due to the failure occurring within the manufacturer's product warranty period. It is necessary to determine the manufacturer's warranty liability. For this reason, it is necessary to confirm the process of water wetting that caused the failure, but there has been no optimal method for determining whether or not the failure has occurred due to contact with water after product shipment.
[0003]
[Problems to be solved by the invention]
It is an object of the present invention to provide a printed matter that is attached to the inside of an electronic device such as a mobile phone or a precision device that is likely to fail due to water wetting, etc., and that can detect water wetting after product shipment. To do.
[0004]
[Means for Solving the Problems]
The water-wetting detection printed matter of the present invention is a water-wetting sensing printed matter obtained by waterless lithographic printing using a waterless lithographic printing ink containing a water-soluble dye on a paper which is difficult to repel water. The water-soluble dye is eluted from the printed portion when touched with water, and oozes out to the non-printed portion of the paper.
[0005]
The water wetness detection printed matter of the present invention is a water wetness detection printed on water-less lithographic printing using a waterless lithographic printing ink containing a water-soluble dye and a concealing pigment on a paper that is difficult to repel water. The printed matter is characterized in that when it comes into contact with water, the water-soluble dye is eluted from the printed portion and oozes out to the non-printed portion of the paper.
[0006]
The water-wetting detection printed matter is attached to the inside of a device that does not like water wetting, and is used for water-wetting detection.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The waterless lithographic printing ink in the present invention comprises a resin, a solvent, a vegetable oil, a water-soluble dye or a water-soluble dye and a hiding pigment, an auxiliary dryer, a surfactant, and the like.
[0008]
Examples of the resin include rosin-modified phenolic resin, alkyd resin, petroleum resin and the like, and the content in the ink is 20% by weight to 30% by weight.
[0009]
The solvent is a paraffinic, isoparaffinic, naphthenic, aromatic or α-olefinic solvent having a boiling range of 200 to 400 ° C., and 10% to 30% by weight in the ink. Content.
[0010]
Examples of vegetable oils include linseed oil, oily oil, cottonseed oil, safflower oil, soybean oil, tall oil, dehydrated castor oil, tung oil, and the like, as well as these polymers and fatty acids that are constituents thereof, and ink. Among them, the content is 10 wt% to 25 wt%.
[0011]
In the printing ink for waterless lithographic printing of the present invention, the water-soluble dye may be used alone as the colorant, but it is preferable to use it together with the masking pigment to facilitate confirmation of water wetting detection.
[0012]
Water-soluble dyes are those that elute from the printed area when they come into contact with water, ooze into non-printed areas of the paper, and make it possible to visually detect water wetting and have dispersibility in the ink. Can be used. From the viewpoint of safety, edible dyes are preferably used. Examples thereof include Food Yellow No. 4, Food Red No. 104, No. 3, Food Blue No. 1, No. 2, and the like. The content of the water-soluble dye in the ink is 2% to 30% by weight, preferably 5% to 15% by weight. If it is less than 2% by weight, the color density is insufficient, and if it exceeds 30% by weight, the water-soluble dye is water-soluble. Uniform dispersibility of the dye in the ink becomes difficult.
[0013]
As a concealment pigment, the color of the water-soluble dye dispersed in the ink coating is concealed, and the water-soluble dye is separated when wetted to make the color of the water-soluble dye stand out. In addition, known inorganic pigments and organic pigments can be used as ink pigments, but from the viewpoint of concealing properties, a black color such as carbon black or a color close thereto is effective. The content of the pigment in the ink is 1% by weight to 30% by weight, preferably 1.6% by weight to 15% by weight. If the content is less than 1% by weight, the concealability is insufficient, and if the content exceeds 30% by weight. It becomes difficult to ensure dispersibility in ink and printability.
[0014]
The total content of the water-soluble dye and the hiding pigment in the ink is 3% by weight to 40% by weight, preferably 7% by weight to 30% by weight.
[0015]
Moreover, surfactant, a dryer, etc. are mentioned as adjuvant. The surfactant is added as necessary in order to further facilitate the elution of the water-soluble dye when wetted with water. Examples of the surfactant include conventionally known anionic, cationic, and nonionic surfactants such as polyoxyethylene glycol oleyl ester, sodium dodecylbenzenesulfonate, polyoxyethylene alkylamine, and the like. The addition amount of the surfactant is 5% by weight or less in the ink, and if it exceeds 5% by weight, it is not preferable because scumming is likely to occur during printing.
[0016]
The dryer is added for the purpose of improving the ink drying property, and examples thereof include Nippon Shokubai Co., Ltd. manganese dryer and cobalt dryer. The addition amount of the dryer is 5% by weight or less in the ink, and if it exceeds 5% by weight, the stability of the ink on the film stick or on the roller of the printing press is difficult, which is not preferable.
[0017]
Further, for the purpose of improving the dispersibility of water-soluble dyes and the stability of ink viscosity over time, rosin-modified phenolic resins and isophorone diisocyanate resins disclosed in JP-A-8-60058 are used as vehicles in the ink composition described above. A reaction product with a retidione derivative or a reaction product of a mixture of a rosin-modified phenolic resin and a vegetable oil and an isophorone diisocyanate uretidione derivative can be used.
[0018]
As the paper in the wetness-sensitive printed matter of the present invention, it is preferable to use paper that is difficult to repel water, such as high-quality paper, plain paper, and a small amount of coating.
[0019]
The wetness-sensitive printed matter of the present invention is obtained by printing the above-described printing ink for waterless lithographic printing, and a waterless lithographic printing plate is used as the printing material. In this case, the non-image portion is composed of a silicon rubber layer and uses its releasability, and dampening water is not used. As such a plate material, there is a TAP plate (manufactured by Toray Industries, Inc.), and if a plate having a deep plate depth is used as a plano-concave plate, it is useful in terms of increasing the amount of landing. As the printing machine, a conventionally known multi-color offset printing machine can be used, and printing speed can be increased and printing accuracy can be improved as compared with sheet-fed gravure printing or letterpress printing.
Hereinafter, specific examples will be described.
[0020]
【Example】
[0021]
(printing)
In order to evaluate the printability of the waterless lithographic printing ink prepared above and the water wetting detection characteristics, the offset printing machine (Lilithon 26 type printing machine, manufactured by Komori Corporation) was used to form water with a circular ring-shaped flesh portion. A TAP plate (made by Toray Industries, Inc.) on which a wetness detection mark was made and printed was attached and printed. Sunflower 128.5 g / m 2 (manufactured by Shin-Oji Paper Co., Ltd.) was used as the paper, and 5000 sheets were printed at a printing plate temperature of 27 to 32 ° C. and a printing speed of 8000 rph.
[0022]
The obtained printed matter was allowed to stand for 48 hours, and then the water was applied by rubbing the printed portion with a cotton swab soaked in water, and the degree to which the white portion which was a non-printed portion was colored with a dye was confirmed. It was confirmed that the red water-soluble dye started to ooze out from the printed portion of the portion and oozed out red in the white portion, so that water wetness could be detected.
[0023]
【The invention's effect】
The water-wetting detection printed matter of the present invention is attached to the inside of an electronic device such as a mobile phone or a precision device that is liable to break down due to water wetting, etc., and makes it possible to sense water wetting after product shipment. This is useful for identifying the cause of the failure.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15212996A JP3606493B2 (en) | 1996-06-13 | 1996-06-13 | Wet print |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15212996A JP3606493B2 (en) | 1996-06-13 | 1996-06-13 | Wet print |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH102893A JPH102893A (en) | 1998-01-06 |
| JP3606493B2 true JP3606493B2 (en) | 2005-01-05 |
Family
ID=15533701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15212996A Expired - Lifetime JP3606493B2 (en) | 1996-06-13 | 1996-06-13 | Wet print |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3606493B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4607350B2 (en) * | 2000-02-07 | 2011-01-05 | 日油技研工業株式会社 | Condensation indicator |
| JP5505278B2 (en) * | 2010-11-24 | 2014-05-28 | 大日本印刷株式会社 | Hologram label capable of detecting wetness |
| JP5891708B2 (en) | 2011-10-28 | 2016-03-23 | セイコーエプソン株式会社 | Printing device |
| JP7018473B2 (en) * | 2020-06-05 | 2022-02-10 | パイロットインキ株式会社 | Water discoloration indicator |
| CN112909754A (en) * | 2021-01-15 | 2021-06-04 | 天津东甲电力工程科技有限公司 | Indoor waterproof leakage monitoring insulating top shell device |
-
1996
- 1996-06-13 JP JP15212996A patent/JP3606493B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH102893A (en) | 1998-01-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7008474B2 (en) | Water-in-oil type emulson ink for stencil printing | |
| AU723774B2 (en) | Offset lithographic printing process | |
| US3363557A (en) | Heat transfer of indicia containing sublimable coloring agent | |
| WO1997033944A1 (en) | Water-based offset lithographic printing ink | |
| EP2035515B1 (en) | Water washable lithographic printing ink | |
| US4357164A (en) | Ink composition for waterless lithography and methods of printing therefrom | |
| JP3606493B2 (en) | Wet print | |
| CA1073574A (en) | Planographic printing ink | |
| JP2013144765A (en) | Offset printing ink composition | |
| JPS58208089A (en) | Sensitivity-reducing ink for wet type offset printing | |
| JP2007314595A (en) | Offset ink for forming back carbon layer | |
| JP4510404B2 (en) | W / O emulsion ink for stencil printing | |
| JP2001002967A (en) | Ink for lithographic press, and lithographic apparatus | |
| WO1999027022A1 (en) | Water-based offset lithographic newspaper printing ink | |
| EP0378890B1 (en) | Ink composition for lithography and methods of printing therefrom | |
| JP3964071B2 (en) | Coating composition for ink roller of printing press and method of protecting ink roller using the same | |
| JPH0138831B2 (en) | ||
| JPH0860058A (en) | Lithographic ink for drawing for coloring with water, and drawing for coloring with water prepared using the same | |
| JP3760746B2 (en) | Desensitizing ink for pressure-sensitive copying paper | |
| CA2242561C (en) | Offset lithographic printing process | |
| US8163038B2 (en) | Low volatile sublimation printing | |
| JPH0112791B2 (en) | ||
| CN105462345A (en) | Alcohol-free lithographic plate ink and preparation method thereof | |
| JPH04345672A (en) | Waterless plate ink for nonabsorbing printing object | |
| Oil and Colour Chemists’ Association et al. | Printing Inks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20040604 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040609 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20040730 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040825 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20040827 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20040929 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20041001 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081015 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091015 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091015 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101015 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111015 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121015 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131015 Year of fee payment: 9 |
|
| EXPY | Cancellation because of completion of term |