JPH0684120B2 - Printing ink transfer body - Google Patents
Printing ink transfer bodyInfo
- Publication number
- JPH0684120B2 JPH0684120B2 JP61276123A JP27612386A JPH0684120B2 JP H0684120 B2 JPH0684120 B2 JP H0684120B2 JP 61276123 A JP61276123 A JP 61276123A JP 27612386 A JP27612386 A JP 27612386A JP H0684120 B2 JPH0684120 B2 JP H0684120B2
- Authority
- JP
- Japan
- Prior art keywords
- type silicone
- silicone rubber
- rubber
- ink
- addition type
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N10/00—Blankets or like coverings; Coverings for wipers for intaglio printing
- B41N10/02—Blanket structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings
- B41N2210/02—Top layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N2210/00—Location or type of the layers in multi-layer blankets or like coverings
- B41N2210/14—Location or type of the layers in multi-layer blankets or like coverings characterised by macromolecular organic compounds
Landscapes
- Printing Plates And Materials Therefor (AREA)
Description
【発明の詳細な説明】 本発明は、一般に凹版転写印刷と呼ばれる印刷法の転写
体に関わり、付加型シリコーンゴムを利用した場合に、
その表面がインキになじみ易く、且つ適度なインキ剥離
性を持つ様に改良いたものに関する。The present invention relates to a transfer body of a printing method generally called intaglio transfer printing, and when an addition type silicone rubber is used,
The present invention relates to a product whose surface is easily adapted to ink and has an appropriate ink releasability.
シリコーンゴム転写体（特にRTV型）は40℃以下の低温
でも硬化でき、ゴム硬度が１°〜80°にいたる広い硬度
範囲で自由に変えられ、また極めて優れた耐溶剤性を有
することなどの点で転写体として利用される頻度が高ま
りつつあるが、縮合型シリコーンゴムは、その表面が非
親油性低分子量成分で覆われていることにより、インキ
の付着が不充分であり、インキに対しての表面のぬれ性
を良くするために、数十回に及ぶならし印刷を行なう
か、適当な表面処理を行ってゴム表面の非親油性低分子
量成分を除去して使用している。ところで、付加型シリ
コーンゴムはラジカル反応で硬化するため、非親油性物
質が表面に存在しない。このため版からシリコーンゴム
上へのインキの転移は容易に行えるが、付加型シリコー
ンゴム表面とインキとの親和性が高すぎるので付加型シ
リコーンゴムから被写体への転写を行わせるために、30
〜100センチポイズ程度のシリコーンオイルを分散させ
て使用するのが一般的な方法である。また、付加型シリ
コーンゴムの硬度を低下させる目的で、付加型シリコー
ンゲルを多量（約50〜80重量％）添加する方法は特開昭
52-4311（印刷インキ転写体およびその製造方法）に述
べられているがそこに述べられている印刷インキ転写体
は、付加型シリコーンゲルの他に無反応型シリコーンゲ
ルが添加されたもので、しかも硬度を１以下という極端
に低くして、インキの該転写体への転移性を向上させ、
かつ無反応シリコーン油の該転写表面への滲出作用によ
り、インキの被印刷物への転写性をぼほ100％にしたも
のである。Silicone rubber transfer materials (especially RTV type) can be cured even at low temperatures of 40 ° C or less, the rubber hardness can be freely changed in a wide hardness range from 1 ° to 80 °, and they have excellent solvent resistance. However, due to the fact that the surface of the condensation type silicone rubber is covered with a non-lipophilic low molecular weight component, the adhesion of the ink is insufficient and In order to improve the wettability of all the surfaces, the non-lipophilic low molecular weight components on the rubber surface are removed by performing a smoothing printing several tens of times or performing an appropriate surface treatment. By the way, since the addition type silicone rubber is cured by a radical reaction, a non-lipophilic substance does not exist on the surface. For this reason, the transfer of ink from the plate to the silicone rubber can be performed easily, but since the affinity of the ink with the addition type silicone rubber is too high, it is necessary to transfer the ink from the addition type silicone rubber to the subject.
It is a general method to disperse and use silicone oil of about 100 centipoise. Further, a method of adding a large amount (about 50 to 80% by weight) of an addition type silicone gel for the purpose of lowering the hardness of the addition type silicone rubber is disclosed in Japanese Patent Laid-Open No.
52-4311 (printing ink transfer body and method for producing the same), the printing ink transfer body described therein is one in which a non-reactive silicone gel is added in addition to the addition type silicone gel, Moreover, the hardness is extremely reduced to 1 or less to improve the transferability of the ink to the transfer body,
Moreover, the transferability of the ink to the printing material is almost 100% due to the leaching action of the unreacted silicone oil onto the transfer surface.
前述した様に印刷インキ転写体として使用するシリコー
ンゴムのうち、縮合型シリコーンゴムは、硬化剤として
過剰のシラン又はシラノールが加えられ、未反応のまま
かなり長時間シリコーンゴム中に残留していること、そ
して無反応型シリコーンゴムオイルが加えられているこ
とから、ゴム表面にじょじょに浸出して、非親油性の薄
膜を形成する。このため一般に縮合型シリコーンゴムを
印刷インキ転写体に使用する場合、使用前に数十回のな
らし印刷か又は適当な表面処理を行って、表面の非親油
性物質を除去する必要があった。例えば（株）日立製作
所より出願されている特許「転写方式印刷用転写体」
（特開昭50-155100号公報）には、鋳込み硬化を完了し
た転写体をCF4等のフッ素を含むガス放電中に数十秒以
上放置し、放電によって発生するフッ素ラジカル（F*）
により、転写体表面にある油状低分子量ケイ素化合物を
フッ化物として除去するか、又は、同転写体をクロム酸
を含む混酸液中に数秒以上浸漬して転写体表面にある油
状低分子ケイ素化合物を分解除去することにより、シリ
コーンゴム製転写体のインキ転移性を向上させる表面処
理方法が記載されている。なるほど、この処理方法はシ
リコーンゴム硬度１°〜80°の広い範囲で市販の油性，
水性インキに対して良好なインキ転移性が得られ、且つ
シリコーンゴムの特徴である耐溶剤性，耐薬品性を損わ
ず、印刷に用いられるほとんどすべての溶剤，薬品に耐
える転写耐が得られるという優れた表面処理方法である
ようにみえる。しかし、これらの処理による硬化はゴム
表面に留っており、内部には非親油性物質が残留して徐
々に表面へ浸出するため、版から縮合型シリコーンゴム
へのインキの転移形状は経時的に変化してしまう。ま
た、付加型シリコーンゴムの場合は硬化機構がラジカル
付加反応のため、硬化後のシリコーンゴム中には非親油
性低分子量体は存在せず、インキの版からの転移形状は
良いが、付加型シリコーンゴムから被印刷体へのインキ
の転写は不完全であり、ほとんど転写しない。そこで一
般には30〜100センチポイズ位の粘度の無反応型のシリ
コーンオイル20〜30重量％程度添加して、インキの剥離
性を増し、転写性を向上させる必要がある。従って付加
型シリコーンゴムも縮合型シリコーンゴムと同様な減少
が起るため、版から付加型シリコーンゴムへのインキの
転写形状も経時的に変化する。As described above, among the silicone rubbers used as the printing ink transfer material, the condensation type silicone rubbers have an excessive amount of silane or silanol added as a curing agent and remain unreacted in the silicone rubber for a considerably long time. Since the non-reactive silicone rubber oil is added, it slowly exudes on the rubber surface to form a non-lipophilic thin film. For this reason, in general, when a condensation type silicone rubber is used for a printing ink transfer body, it is necessary to carry out tens of times of smoothing printing or an appropriate surface treatment to remove the non-lipophilic substance on the surface before use. . For example, the patent “transferring material for transfer type printing” filed by Hitachi, Ltd.
(Japanese Patent Laid-Open No. 50-155100) describes that a transfer body, which has been cast and hardened, is left for several tens of seconds or more in a gas discharge containing fluorine such as CF 4 to generate a fluorine radical (F * ) generated by the discharge.
By removing the oily low molecular weight silicon compound on the transfer body surface as a fluoride, or by immersing the transfer body in a mixed acid solution containing chromic acid for several seconds or more to remove the oily low molecular weight silicon compound on the transfer body surface. A surface treatment method for improving the ink transfer property of a silicone rubber transfer body by decomposing and removing is described. Indeed, this treatment method uses a commercially available oiliness in a wide range of silicone rubber hardness of 1 ° to 80 °,
Good ink transfer properties to water-based inks are obtained, and transfer resistance that can withstand almost all solvents and chemicals used for printing is obtained without impairing the solvent resistance and chemical resistance that are characteristic of silicone rubber. It seems that this is an excellent surface treatment method. However, curing by these treatments remains on the rubber surface, and since the non-lipophilic substance remains inside and gradually leaches to the surface, the shape of the ink transfer from the plate to the condensation type silicone rubber changes over time. Will change to. In addition, in the case of addition type silicone rubber, since the curing mechanism is a radical addition reaction, there is no non-lipophilic low molecular weight substance in the cured silicone rubber, and the transfer shape from the ink plate is good, but the addition type The transfer of ink from the silicone rubber to the printing medium is incomplete and hardly transferred. Therefore, it is generally necessary to add about 20 to 30% by weight of a non-reactive silicone oil having a viscosity of about 30 to 100 centipoise to increase the releasability of the ink and improve the transferability. Therefore, the addition type silicone rubber also undergoes a reduction similar to that of the condensation type silicone rubber, so that the transfer shape of the ink from the plate to the addition type silicone rubber also changes with time.
すなわち本発明は、付加型シリコーンゴムをインキ受容
層にしてなる印刷インキ転写体において、表面被覆層に
付加型シリコーンゲルを15〜30重量％付加した、付加型
シリコーンを用いることを特徴とする印刷インキ転写体
である。That is, the present invention relates to a printing ink transfer body comprising an addition type silicone rubber as an ink receiving layer, wherein the addition type silicone gel is added to the surface coating layer in an amount of 15 to 30% by weight. It is an ink transfer body.
非親油性物質が存在しない付加型シリコーンゴムに無反
応型シリコーン油の不活性末端基の１ケを活性基で置換
した付加型シリコーンゲルを加えることにより、適度な
インキ剥離性を、付加型シリコーンゴム表面に与える。
また付加型シリコーンゲルを添加したゴム構造体は組織
が緻密であり、シリカ粉のようなゴム補強用充填剤が不
要もしくは少量ですみ、かつ無反応性シリコーン油を添
加する必要がない。Addition-type silicone gel obtained by substituting one of the inactive terminal groups of non-reactive silicone oil with active groups is added to addition-type silicone rubber that does not contain non-lipophilic substances, to provide appropriate ink releasability. Give to the rubber surface.
In addition, the rubber structure to which the addition type silicone gel is added has a dense structure, and a filler for reinforcing the rubber such as silica powder is not necessary or required in a small amount, and it is not necessary to add a non-reactive silicone oil.
付加型シリコーンゴムは本来インキとの親和性が良いた
め、被印刷体への転写性が不足している。したがって付
加型シリコーンゴム表面に若干の非親油性物質を存在さ
せることにより、版から付加型シリコーンゴムへのイン
キ転写性と、付加型シリコーンゴムから被印刷体へのイ
ンキ転写性をバランスさせることができ、非親油性物質
のゴム表面での濃度が変化しなければ、版から付加型シ
リコーンゴムへのインキの転移形状も、付加型シリコー
ンゴムから被印刷体への転写形状も経時変化を起さな
い。そこで、非親油性物質として無反応型シリコーン
油、例えば、ジメチルポリシロキサン，メチルフェニル
ポリシロキサン，ヒドロキシメチルポリシロキサンなど
の不活性末端基の１個をビニル基，水酸基などの活性基
で置換した、付加型シリコーンゲルを使用することで、
シリコーンゴムが硬化した後に付加型シリコーンゲルも
付加型シリコーンゴムの構造中に組込れるために、ゲル
の内部から表面への移動が不可能になり、ゴム表面の非
親油性物質としての付加型シリコーンゲルの濃度は変化
しない。付加型シリコーンゲルの添加量は15〜30重量％
が適当であり、ゴム硬度65°（JIS C）の付加型シリコ
ーンゴムを使用した場合、ゴム硬度57°〜50°（JIS
C）が得られる。また、更に硬度の低いゴム硬度20°（J
IS C）程度のゴムを単一又は混合で使用することによ
り、ゴム硬度57°〜10°（JIS C）の付加型シリコーン
ゴムも得られ、膜厚５μｍ程度の厚膜印刷にも適用でき
る。この様にして得られた付加型シリコーンゴム製印刷
インキ転写体は使用前のならし印刷、表面処理等は不要
であり、印刷中のインキの転移性の転写性の経時変化も
ないため、物理的な変化が表面に起るまで安定した印刷
ができる。Since the addition type silicone rubber originally has a good affinity with the ink, the transferability to the material to be printed is insufficient. Therefore, the presence of some non-lipophilic substance on the surface of the addition type silicone rubber can balance the ink transferability from the plate to the addition type silicone rubber and the ink transferability from the addition type silicone rubber to the printing medium. If the concentration of the non-lipophilic substance on the rubber surface does not change, the shape of the ink transfer from the plate to the addition type silicone rubber and the shape of the transfer from the addition type silicone rubber to the printing medium will not change over time. Absent. Therefore, as a non-lipophilic substance, a non-reactive silicone oil, for example, one of the inactive terminal groups such as dimethylpolysiloxane, methylphenylpolysiloxane, and hydroxymethylpolysiloxane is replaced with an active group such as vinyl group and hydroxyl group, By using addition type silicone gel,
Since the addition type silicone gel is also incorporated into the structure of the addition type silicone rubber after the silicone rubber is cured, it becomes impossible to move from the inside of the gel to the surface, and the addition type as a non-lipophilic substance on the rubber surface. The concentration of silicone gel does not change. Addition type silicone gel is added in an amount of 15-30% by weight
Is suitable, and when an addition type silicone rubber with a rubber hardness of 65 ° (JIS C) is used, the rubber hardness is 57 ° to 50 ° (JIS
C) is obtained. In addition, rubber hardness of 20 ° (J
Addition type silicone rubber having a rubber hardness of 57 ° to 10 ° (JIS C) can be obtained by using a rubber having a hardness of IS C) alone or in a mixture, and can be applied to thick film printing having a film thickness of about 5 μm. The addition type silicone rubber printing ink transfer material thus obtained does not require leveling printing, surface treatment, etc. before use, and does not change the transferability of the ink during printing over time. Stable printing can be performed until a change occurs on the surface.
（実施例−１） アルミニウム基板上に東芝シリコーン（株）社製プライ
マーME151を塗布した後、東芝シリコーン（株）社製常
温硬化型付加型シリコーンゴムTSE 3450（Ａ）を72重量
部、硬化剤TSE 3450（Ｂ）を８部、付加型シリコーンゲ
ルYE 5818（Ａ）を18.2重量部、硬化剤YE 5818（Ｂ）を
1.8重量部加え十分に攪拌した後に真空脱泡したものを
作成し硬化させてトータル厚み1.7mm硬度55°(JIS C)と
した。この様にして作製した印刷インキ転写体を印刷機
にとり付けインキとして東洋インキ製造（株）社製の下
記組成のものを調整して用い線巾0.2〜0.02mm、版深0.0
1mmのパターンをいろいろ組合せたテスト用版を用いて
ガラス基板に印刷した。このとき、シリコーンゲルを加
えないで作成した転写体には、パターンのほとんどがゴ
ム上に残り、ガラス基板上に転写されなかったのに対
し、シリコーンゲルを加えた上記転写体では、完全にガ
ラス基板上に転写が行われ、連続印刷を行って転写形状
の劣化はみられなかった。(Example-1) After applying primer ME151 manufactured by Toshiba Silicone Co., Ltd. on an aluminum substrate, 72 parts by weight of a room temperature curable addition type silicone rubber TSE 3450 (A) manufactured by Toshiba Silicone Co., Ltd., a curing agent 8 parts of TSE 3450 (B), 18.2 parts by weight of addition type silicone gel YE 5818 (A), and curing agent YE 5818 (B)
After adding 1.8 parts by weight and stirring thoroughly, a vacuum degassed product was prepared and cured to give a total thickness of 1.7 mm and a hardness of 55 ° (JIS C). The printing ink transfer body thus prepared was mounted on a printing machine and the ink having the following composition manufactured by Toyo Ink Mfg. Co., Ltd. was prepared and used, with a line width of 0.2 to 0.02 mm and a plate depth of 0.0.
It was printed on a glass substrate using a test plate with various combinations of 1 mm patterns. At this time, most of the pattern remained on the rubber and was not transferred onto the glass substrate in the transfer body prepared without adding the silicone gel, whereas in the above transfer body containing the silicone gel, the pattern was completely transferred onto the glass substrate. Transfer was performed on the substrate and continuous printing was performed, and no deterioration of the transferred shape was observed.
（実施例−２） アルミニウム基板上に東芝シリコーン（株）社製プライ
マーME151を塗布した後、東芝シリコーン（株）社製常
温硬化型付加型シリコーンゴムTSE3450（Ａ）を36重量
部、硬化剤TSE3450（Ｂ）を４重量部、付加型シリコー
ンゴムYE5822（Ａ）を36重量部、硬化剤YE5822（Ｂ）を
４重量部、更に付加型シリコーンゲルYE 518（Ａ）を1
8.2重量部、硬化剤YE 5818（Ｂ）を1.8重量部加え十分
に攪拌した後に真空脱泡したものを作成し硬化させてト
ータル厚み1.7mm硬度38°(JIS C)とした。この様にして
作製した印刷インキ転写体を印刷機にとりつけ、（実施
例−１）と同様にして印刷を行った結果、完全にガラス
基板上への転写が行われ、連続印刷を行っても、転写形
状の劣化はみられなかった。 (Example-2) After coating a primer ME151 manufactured by Toshiba Silicone Co., Ltd. on an aluminum substrate, 36 parts by weight of a room temperature curable addition type silicone rubber TSE3450 (A) manufactured by Toshiba Silicone Co., Ltd., a curing agent TSE3450. (B) 4 parts by weight, addition type silicone rubber YE5822 (A) 36 parts by weight, curing agent YE5822 (B) 4 parts by weight, addition type silicone gel YE 518 (A) 1
8.2 parts by weight and 1.8 parts by weight of the curing agent YE 5818 (B) were added, and the mixture was thoroughly stirred and degassed in vacuum to prepare a cured product having a total thickness of 1.7 mm and a hardness of 38 ° (JIS C). The printing ink transfer body produced in this manner was attached to a printing machine, and printing was carried out in the same manner as in (Example 1). As a result, the transfer onto the glass substrate was completed, and continuous printing was performed. The transfer shape was not deteriorated.
以上の実施例に記した、ゴムの組成及び硬化をまとめる
と以下の票の様になる。The composition and cure of the rubber described in the above examples can be summarized as shown below.
〔発明の効果〕 付加型シリコーンゴムに付加型シリコーンゲルを添加す
ることによって、付加型シリコーン表面に適度なインキ
剥離性を与えることができた。このため、シリコーンゴ
ム中に不安定なシリコーン油を添加する必要がなくな
り、従ってゴム表面へのシリコーン油のしみ出しなど経
時的な表面変化もなく、表面の物理的劣化が生じるま
で、安定した印刷が行える。また縮合型シリコーンゴム
に比べて付加型シリコーンゴムは内部に添加している補
強用充填剤の量が少なく、これらの凝集によるゴム表面
の突起の発生もなくため、版深の浅い凹版（例えば５μ
m,7μｍ）を使用する場合にもピンホールの発生は非常
に少ない。また、付加型シリコーンゴムは、インキとの
親和性が高いため、版印圧を低くでき、印刷パターンの
寸法精度も向上した。 [Effects of the Invention] By adding the addition-type silicone gel to the addition-type silicone rubber, it was possible to impart appropriate ink releasability to the surface of the addition-type silicone. For this reason, it is not necessary to add unstable silicone oil to the silicone rubber, and therefore, there is no surface change over time such as exudation of the silicone oil on the rubber surface, and stable printing is possible until physical deterioration of the surface occurs. Can be done. In addition, the addition type silicone rubber has a smaller amount of the reinforcing filler added to the inside than the condensation type silicone rubber, and since there is no protrusion on the rubber surface due to the aggregation of these, the intaglio plate with a shallow plate depth (for example, 5 μm) is used.
Even when using m, 7 μm), pinholes are extremely rare. Further, since the addition type silicone rubber has a high affinity with the ink, the plate printing pressure can be lowered and the dimensional accuracy of the printing pattern is improved.
Claims (3)
てなる印刷インキ転写体において、表面被覆層に付加型
シリコーンゲルを添加した付加型シリコーンゴムを用い
ることを特徴とする印刷インキ転写体。1. A printing ink transfer body comprising an addition type silicone rubber as an ink receiving layer, wherein the addition type silicone rubber having an addition type silicone gel added to a surface coating layer is used.
量％であることを特徴とする特許請求の範囲第１項記載
の印刷インキ転写体。2. The printing ink transfer member according to claim 1, wherein the addition-type silicone gel is added in an amount of 15 to 30% by weight.
油を全く含まないことを特徴とする特許請求の範囲第１
項記載の印刷インキ転写体。3. A rubber reinforcing filler and a non-reactive silicone oil are not contained at all.
The printing ink transfer member according to the item.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61276123A JPH0684120B2 (en) | 1986-11-19 | 1986-11-19 | Printing ink transfer body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61276123A JPH0684120B2 (en) | 1986-11-19 | 1986-11-19 | Printing ink transfer body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63128996A JPS63128996A (en) | 1988-06-01 |
| JPH0684120B2 true JPH0684120B2 (en) | 1994-10-26 |
Family
ID=17565111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61276123A Expired - Lifetime JPH0684120B2 (en) | 1986-11-19 | 1986-11-19 | Printing ink transfer body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0684120B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63202498A (en) * | 1987-02-17 | 1988-08-22 | Toray Ind Inc | Transfer cylinder for intaglio offset press |
| JP2008049495A (en) * | 2006-08-22 | 2008-03-06 | Sumitomo Rubber Ind Ltd | Printing blanket |
| JP5523032B2 (en) * | 2009-09-11 | 2014-06-18 | 住友ゴム工業株式会社 | Silicone blanket |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS524311A (en) * | 1975-06-27 | 1977-01-13 | Toppan Printing Co Ltd | Printing ink transfer unit and method of producing same |
-
1986
- 1986-11-19 JP JP61276123A patent/JPH0684120B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS524311A (en) * | 1975-06-27 | 1977-01-13 | Toppan Printing Co Ltd | Printing ink transfer unit and method of producing same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63128996A (en) | 1988-06-01 |
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