JPH032066B2 - - Google Patents
Info
- Publication number
- JPH032066B2 JPH032066B2 JP58136291A JP13629183A JPH032066B2 JP H032066 B2 JPH032066 B2 JP H032066B2 JP 58136291 A JP58136291 A JP 58136291A JP 13629183 A JP13629183 A JP 13629183A JP H032066 B2 JPH032066 B2 JP H032066B2
- Authority
- JP
- Japan
- Prior art keywords
- ink
- pad
- printing
- transferred
- ultraviolet
- 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
- 238000007639 printing Methods 0.000 claims description 31
- 238000007649 pad printing Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 9
- 239000000976 ink Substances 0.000 description 59
- 239000002904 solvent Substances 0.000 description 11
- 238000006116 polymerization reaction Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 230000006750 UV protection Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
- B41F17/001—Pad printing apparatus or machines
Description
【発明の詳細な説明】
この発明は、パツド印刷の方法に関する改良に
係り、紫外線硬化型インクを用いた場合でも繰り
返し鮮明なパツド印刷が行えるようにしようとす
るものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a pad printing method, and is intended to enable repeated and clear pad printing even when using ultraviolet curable ink.
ところで通常のパツド印刷は、第1図に例示す
る如く、パツド支持体2に取りつけられた弾力性
に富むパツド1と、インクポケツト4が備えられ
た凹版である印版3とを用意し、まず印版3のイ
ンクポケツト4へ所要量のインク5を図1の如く
供給した後、その印版3にパツド1を図2の如く
押しつけて、該パツドの表面で上記ポケツト4内
のインク5を図3の如く受け取り、次いでこのパ
ツド1を対象物品6の被印刷面へ図4の如く押し
つけて、該パツド表面のインク5をその被印刷面
へ図5の如く転着せしめる、という工程順に従つ
て実行される。 By the way, in normal pad printing, as illustrated in FIG. 1, first, a highly elastic pad 1 attached to a pad support 2 and a printing plate 3, which is an intaglio plate equipped with an ink pocket 4, are prepared. After supplying the required amount of ink 5 to the ink pocket 4 of the printing plate 3 as shown in FIG. 1, press the pad 1 against the printing plate 3 as shown in FIG. The pad 1 is received as shown in FIG. 3, and then the pad 1 is pressed onto the printing surface of the target article 6 as shown in FIG. 4, and the ink 5 on the pad surface is transferred to the printing surface as shown in FIG. is executed.
このようなパツド印刷には、通常、溶剤型のイ
ンクが使用されている。この種のインクは、溶剤
の蒸発に伴つて粘性が高まり、他物への粘着性を
増して終には固まる性質を有する。従つて、かか
るインクを上記のパツド印刷に使用するときは、
該インクが印版3から対象物品6へ移されるまで
のパツド表面に付着している僅かな時間内でも、
これの粘性が溶剤の蒸発によつて多少は高められ
るため、そのインクをパツド表面から被印刷面へ
容易に転着させ得て該パツドの表面に残存させる
ことがなく、それ故に次回以降も引続き鮮明なパ
ツド印刷を可能ならしめ得る。 Solvent-based ink is usually used in such pad printing. This type of ink has the property of increasing its viscosity as the solvent evaporates, increasing its adhesion to other objects, and eventually solidifying. Therefore, when using such ink for the above pad printing,
Even within the short time that the ink is attached to the pad surface until it is transferred from the printing plate 3 to the target article 6,
Since the viscosity of the ink is increased to some extent by evaporation of the solvent, the ink can be easily transferred from the pad surface to the printing surface without remaining on the surface of the pad, so that it can be continued for the next time. It is possible to make clear pad printing possible.
一方、紫外線硬化型のインクは、硬くて耐紫外
線性の良好な印刷被膜を形成することができるた
め、例えば耐擦過性や紫外線による褪色が問題視
されるような用途で賞用されている。 On the other hand, UV-curable inks can form a printed film that is hard and has good UV resistance, so they are used in applications where, for example, scratch resistance or fading due to UV rays is a problem.
然し乍らこの種のインクは、前記した溶剤型の
インクと異なつて溶剤を含まない無溶剤型である
ため、溶剤の蒸発による効果を期待し得ず、従つ
て溶剤型インクと同様には取り扱えない。即ちこ
の紫外線硬化型インクは、紫外線に重合反応する
ような合成樹脂を展色剤に使用して、その反応で
固まるように作られており、且つその展色剤が、
室内照明光に含まれている程度の弱い紫外線では
重合を開始せず、紫外線ランプによる強力な紫外
線照射を受けたとき初めて重合を開始するように
調整されているため、空気中に放置しても粘性が
変化せず、従つて自然には固まらない性質を有す
る。それ故にこのインクは、印刷後に上記のラン
プで紫外線を照射して展色剤を重合させ、言わば
強制的に固まらせる必要がある。 However, unlike the above-mentioned solvent-based inks, this type of ink is a solvent-free type that does not contain a solvent, so it cannot be expected to have the effect of evaporation of the solvent, and therefore cannot be handled in the same way as solvent-based inks. That is, this ultraviolet curable ink is made by using a synthetic resin that polymerizes when exposed to ultraviolet light as a color vehicle, and hardens by the reaction, and the color vehicle is
Polymerization does not start under the weak ultraviolet light contained in indoor lighting, but polymerization starts only when exposed to strong ultraviolet rays from an ultraviolet lamp, so even if left in the air. Its viscosity does not change and therefore it does not harden naturally. Therefore, after printing, it is necessary for this ink to be irradiated with ultraviolet rays using the above-mentioned lamp to polymerize the color vehicle and forcibly harden it, so to speak.
そこで、このような紫外線硬化型のインクを前
記したパツド印刷に使用せんとするときは、次の
ような問題が生じる。 Therefore, when attempting to use such ultraviolet curable ink for the above-mentioned pad printing, the following problems arise.
まず前記した第1図のパツド印刷工程に於い
て、通常の溶剤型インクに代え紫外線硬化型イン
クを使用すると、このインクは、図2の段階で取
敢えずインクポケツト4からパツド1の表面に受
け取られ、図3の状態を経て図4に示す如く物品
6の被印刷面へ押しつけられはするが、その間に
おける粘性の高まりが全くみられないため、被印
刷面に対して図5のようには転着され得ない。 First, in the pad printing process shown in FIG. 1, if an ultraviolet curable ink is used instead of the usual solvent-based ink, this ink is transferred from the ink pocket 4 to the surface of the pad 1 at the stage shown in FIG. 3, and is then pressed onto the printing surface of the article 6 as shown in FIG. cannot be transferred to
即ち第1図4の段階に相当した第2図1に示す
如く、パツド1の表面に付着して運ばれた紫外線
硬化型インク50は、粘性が低いままであるた
め、物品6の被印刷面へ押しつけられても全量が
該面へ転着するに至らず、パツド1を物品6から
引き離すときに図中のA−A線付近から略二分さ
れて、同図2に符号51,52で示す如く、約半
分だけが被印刷面へ転着されるにとどまり、残り
は依然としてパツド表面へ付着したままとなる。
従つて被印刷面では、転着されたインク51の量
が予期したよりも少ないため、印刷被膜の膜厚が
薄くて、いわゆるインク乗りが悪い掠れた印刷と
なり易く、またパツド表面に残されたインク52
は、その後に該表面が印版から受け取る新たなイ
ンクとの僅かな位置のずれによつても、その新た
なインクで描かれる印刷パターンの輪郭を崩し
て、次回以降の印刷を不鮮明にすることが多い。 That is, as shown in FIG. 2, which corresponds to the stage shown in FIG. Even when the pad 1 is pressed against the surface, the entire amount is not transferred to the surface, and when the pad 1 is pulled away from the article 6, it is approximately bisected from the vicinity of the line A-A in the figure, and is indicated by reference numerals 51 and 52 in the same figure. As such, only about half is transferred to the printing surface, and the rest remains attached to the pad surface.
Therefore, since the amount of transferred ink 51 on the printing surface is smaller than expected, the thickness of the printing film is thin, which tends to result in so-called blurred printing with poor ink transfer, and also the amount of ink 51 left on the pad surface is thin. ink 52
Even a slight misalignment with the new ink that the surface receives from the printing plate will destroy the outline of the printing pattern drawn with the new ink, making subsequent printing unclear. There are many.
よつて紫外線硬化型インクは、上記したような
実情のため、現在ではパツド印刷に不向きとされ
ており、硬くて耐紫外線性の良好な印刷被膜をパ
ツド印刷によつて得ることが不可能視されてい
た。 Therefore, due to the above-mentioned circumstances, UV-curable inks are currently considered unsuitable for pad printing, and it is considered impossible to obtain a hard, UV-resistant printed film by pad printing. was.
本発明は、かかる従来の実情に対処して、紫外
線硬化型インクによる鮮明なパツド印刷を繰り返
し容易に実現可能ならしめるため、パツド表面で
受け取られたインクが被印刷面へ転着されるまで
の段階で、展色剤の重合を一部開始させて該イン
クの粘性を少しだけ高め、然る後にこれを被印刷
面へ転着させるようにしたものである。以下その
詳細を第3図に示した実施例に基づいて説明す
る。 The present invention has been developed in order to cope with the conventional situation and to easily and repeatedly print clear pads using ultraviolet curable ink. At this step, polymerization of the color vehicle is partially initiated to slightly increase the viscosity of the ink, which is then transferred to the printing surface. The details will be explained below based on the embodiment shown in FIG.
この第3図に於いて、第1,2図と共通の符号
が附されているものは同一物を示し、7,8は紫
外線ランプである。 In FIG. 3, the same reference numerals as in FIGS. 1 and 2 indicate the same components, and 7 and 8 are ultraviolet lamps.
まず第3図1に示す如く、印版3のインクポケ
ツト4へ公知の手段で紫外線硬化型インク50を
所要量だけ供給した後、この印版面へ図2の如く
パツド1を押しつけて、インクポケツト4内のイ
ンク50をそのパツド表面で受け取らせる。ここ
までの工程は従来と変わらない。 First, as shown in FIG. 3, a required amount of ultraviolet curable ink 50 is supplied to the ink pocket 4 of the printing plate 3 by known means, and then the pad 1 is pressed against the printing plate surface as shown in FIG. The ink 50 in 4 is received on the surface of the pad. The process up to this point is the same as before.
このようにしてパツド表面へ移されたインク5
0には、次いで第3図3に示す如く、該インクが
次工程の対象物品6上へ転着されるまでの間に紫
外線ランプ7を用いて紫外線が照射される。する
とそのインク50は、展色剤として使用されてい
る合成樹脂の重合開始により、粘性が高まる。但
しこの紫外線照射は、インク50の粘性を高める
目的で行われ、該インクの完全な固化を目的とし
たものではない。従つてこの段階で使用される紫
外線ランプ7は、出力の小なるものでよく、また
その照射量は、次工程でのインク転着を容易なら
しめる程度に該インクの粘性を高め得る範囲で設
定される。 Ink 5 transferred to the pad surface in this way
Next, as shown in FIG. 3, the ink is irradiated with ultraviolet light using an ultraviolet lamp 7 until the ink is transferred onto the object 6 for the next process. Then, the viscosity of the ink 50 increases due to the initiation of polymerization of the synthetic resin used as a color vehicle. However, this ultraviolet irradiation is performed for the purpose of increasing the viscosity of the ink 50, and is not for the purpose of completely solidifying the ink. Therefore, the ultraviolet lamp 7 used in this step may have a small output, and its irradiation amount is set within a range that can increase the viscosity of the ink to the extent that it facilitates ink transfer in the next step. be done.
然る後、第3図4に示す如く、紫外線照射済み
のインク50′をもつパツド1は、物品6の被印
刷面上へ押しつけられる。するとこのインク5
0′は、上記のように粘性が高められているから、
同図5に示す如く、パツド表面から被印刷面上へ
容易に転着され、該パツドの表面に残存すること
がない。 Thereafter, as shown in FIG. 3, the pad 1 with the ultraviolet irradiated ink 50' is pressed onto the printing surface of the article 6. Then this ink 5
0′ has increased viscosity as mentioned above, so
As shown in FIG. 5, it is easily transferred from the surface of the pad onto the surface to be printed, and does not remain on the surface of the pad.
即ち紫外線照射済みのインク50′は、溶剤が
一部蒸発したときの溶剤型インクと同様に取り扱
い得て、その全量を被転写面上へ転着させること
ができ、従つて被印刷面上には、印刷被膜の膜厚
が大でいわゆるインク乗りの良いパツド印刷が実
現されることになり、またパツド表面にインク残
りがないため、次回以降も印刷パターンに輪郭崩
れのない鮮明な印刷が可能となる。 In other words, the ink 50' that has been irradiated with ultraviolet rays can be handled in the same way as solvent-based ink when the solvent has partially evaporated, and the entire amount can be transferred onto the printing surface. The printing film has a large thickness, so it is possible to achieve so-called pad printing with good ink coverage, and since there is no ink left on the pad surface, it is possible to print clearly and without losing the outline of the printed pattern from next time onwards. becomes.
なお、このようにして被印刷面上へ転着された
インク50′は、当初よりも粘性が高められてい
るだけであつて、未だ固まつてはいない。従つて
その転着後、第3図6に示す如く、紫外線ランプ
8で改めて紫外線を照射して、展色剤の完全な硬
化により固化させる必要がある。 It should be noted that the ink 50' transferred onto the printing surface in this manner has only a higher viscosity than the initial one, and has not hardened yet. Therefore, after the transfer, as shown in FIG. 3, it is necessary to irradiate ultraviolet rays again with an ultraviolet lamp 8 to completely cure and solidify the color vehicle.
以上のように本発明は、紫外線硬化型インクを
使用するパツド印刷に於いて、印刷からパツド表
面へ移されたインクに対し、該インクが次工程で
転着されるまでの間に紫外線を照射して該インク
の粘性を高め、然る後、このインクを印刷対象物
品の被印刷面へ転着させるようにしたものである
から、かかる本発明の印刷方法によれば、従来不
可能視されていた紫外線硬化型インクによるパツ
ド印刷を比較的簡単に実行可能ならしめ得て、膜
厚が大で然も印刷パターンに輪郭崩れのない鮮明
な印刷被膜を、被印刷面上へ繰り返し容易に形成
させることができる。 As described above, in pad printing using ultraviolet curable ink, the present invention irradiates ultraviolet rays to the ink transferred from printing to the pad surface before the ink is transferred in the next process. The printing method of the present invention increases the viscosity of the ink, and then transfers the ink to the printing surface of the article to be printed. Pad printing using ultraviolet curable ink, which had previously been used, can now be carried out relatively easily, and a clear printed film with a large film thickness without losing the outline of the printed pattern can be repeatedly and easily formed on the printing surface. can be done.
第1図1〜5は溶剤型インクを使用した通常の
パツド印刷を工程順に示す正面図、第2図1,2
は紫外線硬化型インクを使用した場合の従来例を
示す正面図、第3図1〜6は本発明の実施例を工
程順に示す正面図である。
1……パツド、3……印版、4……インクポケ
ツト、6……印刷対象物品、7……紫外線ラン
プ、50,50′……紫外線硬化型インク。
Figures 1 to 5 are front views showing the process order of normal pad printing using solvent-based ink, Figures 2 1 and 2
3 is a front view showing a conventional example in which an ultraviolet curable ink is used, and FIGS. 3 1 to 6 are front views showing embodiments of the present invention in the order of steps. 1... Pad, 3... Printing plate, 4... Ink pocket, 6... Article to be printed, 7... Ultraviolet lamp, 50, 50'... Ultraviolet curing ink.
Claims (1)
化型インクを、その印版面に押しつけたパツドの
表面で受け取らせ、次いで該インクが次工程で転
着されるまでの間において、上記パツド表面のイ
ンクに紫外線を照射して該インクの粘性を高め、
然る後このインクを、パツド表面から印刷対象物
品の被印刷面へ転着させるようにしたことを特徴
とする紫外線硬化型インクを用いたパツド印刷方
法。1. The ultraviolet curable ink supplied to the ink pocket of the printing plate is received by the surface of the pad pressed against the printing plate surface, and then the ink on the surface of the pad is transferred until the ink is transferred in the next process. irradiate with ultraviolet rays to increase the viscosity of the ink,
A pad printing method using an ultraviolet curable ink, characterized in that the ink is then transferred from the pad surface to the printing surface of an article to be printed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13629183A JPS6025756A (en) | 1983-07-25 | 1983-07-25 | Pad printing method using ultraviolet ray curing ink |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13629183A JPS6025756A (en) | 1983-07-25 | 1983-07-25 | Pad printing method using ultraviolet ray curing ink |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6025756A JPS6025756A (en) | 1985-02-08 |
JPH032066B2 true JPH032066B2 (en) | 1991-01-14 |
Family
ID=15171735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13629183A Granted JPS6025756A (en) | 1983-07-25 | 1983-07-25 | Pad printing method using ultraviolet ray curing ink |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6025756A (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63179126U (en) * | 1987-05-11 | 1988-11-21 | ||
JPH02106349A (en) * | 1988-10-14 | 1990-04-18 | Nabitasu Kk | Printing plate for uv ink in pad printer |
US6248804B1 (en) | 1997-02-27 | 2001-06-19 | Acushnet Company | Ultraviolet and or/ visible light curable inks with photoinitiators for game balls, golf balls and the like |
US6013330A (en) * | 1997-02-27 | 2000-01-11 | Acushnet Company | Process of forming a print |
US6500495B2 (en) | 1997-02-27 | 2002-12-31 | Acushnet Company | Method for curing reactive ink on game balls |
JP5877102B2 (en) * | 2012-03-27 | 2016-03-02 | 株式会社ミマキエンジニアリング | Printing method and printing apparatus |
CN105730037A (en) * | 2014-12-10 | 2016-07-06 | 比亚迪股份有限公司 | Method for making plane pattern, method for processing steel plate pattern and steel plate |
KR20180120241A (en) * | 2016-04-28 | 2018-11-05 | 가부시키가이샤 슈호 | Printing blanket, process for producing printing blanket and printing process using printing blanket |
AT518988B1 (en) * | 2016-09-30 | 2018-03-15 | Trodat Gmbh | Method for producing a UV-curable ink stamp with |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5363111A (en) * | 1976-11-15 | 1978-06-06 | Hamasawa Kogyo Kk | Automatic printer |
JPS5747349B2 (en) * | 1977-08-01 | 1982-10-08 | ||
JPS5871160A (en) * | 1981-10-23 | 1983-04-27 | Taihei Kogyo Kk | Method and device for aiding ink transfer in pad printing machine |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5747349U (en) * | 1980-09-01 | 1982-03-16 |
-
1983
- 1983-07-25 JP JP13629183A patent/JPS6025756A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5363111A (en) * | 1976-11-15 | 1978-06-06 | Hamasawa Kogyo Kk | Automatic printer |
JPS5747349B2 (en) * | 1977-08-01 | 1982-10-08 | ||
JPS5871160A (en) * | 1981-10-23 | 1983-04-27 | Taihei Kogyo Kk | Method and device for aiding ink transfer in pad printing machine |
Also Published As
Publication number | Publication date |
---|---|
JPS6025756A (en) | 1985-02-08 |
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