JP2016074206A - 水系印刷転写固定システムのための低い剥離力を有するアンダーコート層 - Google Patents
水系印刷転写固定システムのための低い剥離力を有するアンダーコート層 Download PDFInfo
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- JP2016074206A JP2016074206A JP2015184790A JP2015184790A JP2016074206A JP 2016074206 A JP2016074206 A JP 2016074206A JP 2015184790 A JP2015184790 A JP 2015184790A JP 2015184790 A JP2015184790 A JP 2015184790A JP 2016074206 A JP2016074206 A JP 2016074206A
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- reactive silicone
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Abstract
【解決手段】少なくとも1つの非反応性シリコーン剥離剤は、ポリエーテル修飾されたポリシロキサンおよび非反応性シリコーングリコールコポリマーから選択される。少なくとも1つの非反応性シリコーン剥離剤は、組成物の合計重量を基準として約0.001%〜約2%、例えば、約0.03%〜約0.06%の範囲の量で存在してもよい。
【選択図】なし
Description
実施例1A−ポリビニルアルコール溶液の調製
固体含有量が約5%〜約30%のポリビニルアルコール(PVOH)溶液を、脱イオン水を用いて調製した。塊の生成を避けるために、攪拌しつつ、PVOH粉末を冷水に加えた。粉末が完全に分散したら、混合物を、ポリマーが溶解する温度(使用するPVOHのグレードによって、約85℃〜約98℃の範囲)まで加熱した。PVOHが完全に溶解するまで、この温度で混合を続けた。材料のグレードおよび攪拌システムの効率に依存して、完全な溶解を達成するのに、ある程度の時間がかかるだろう。
2種類の犠牲コーティング組成物を調製した。組成物にシリコーン剥離剤を入れることなく、サンプルAをコントロール組成物として製造し、サンプルBは、約0.045%のDow Corning(登録商標)57添加剤(非反応性シリコーングリコールコポリマーを含む液体シリコーン剥離剤)を含んでいた。コントロールサンプルA犠牲コーティングを、4.5%のPVOH 203、15%のグリセロール、0.3%のSLSおよび80.2%の脱イオン水を含む溶液を混合することによって調製した。4.5%のPVOH 203、15%のグリセロール、0.3%のSLS、0.045%のDow Corning(登録商標)57添加剤および80.155%の脱イオン水を含む溶液を混合することによって、実験サンプルBの犠牲コーティングを調製した。
デンプンの糊化は、水および熱存在下、デンプン分子の分子間結合を破壊し、水素結合部位(ヒドロキシル水素および酸素)がもっと多くの水と係合することができるようにするプロセスである。これにより、デンプン顆粒が不可逆的に溶解する。
フッ素化ポリマーFKMエラストマーDaikin G621から、アミノシラン AO700を架橋剤として用い、ブランケット基材を製造した。最初に、流れる熱水を用いて洗浄し、次いで、IPAで拭き取った。次いで、このブランケットをホットプレートに置き、50℃に設定した。ブランケットの表面温度が約50℃に達した後、アニロックスロール(165Q13)を用い、このブランケットに対し、犠牲コーティング組成物溶液を手動でコーティングした。ブランケットをホットプレートに約1分間放置し、コーティングした薄い膜を乾燥させた。サンプルA、サンプルB、サンプルCおよびサンプルDのすべてについて、このプロセスを繰り返した。
犠牲コーティング組成物に対するインクの良好な濡れ性および広がり性を有するために、この薄い膜が連続かつ均一であることを確保することが望ましく、このことは、虹効果から観察することができる。G621ブランケット基材にコーティングされた膜の光学顕微鏡(OM)画像を撮影した。コントロール(サンプルAおよびC)およびDow Corning(登録商標)を含む配合物57添加剤剥離剤(サンプルBおよびD)のOM画像は、すべて優れた膜均一性を示した。
配合物の剥離力を測定するために、コーティングプロセス中、Xerox(登録商標)Digital Color Elite Gloss(DCEG)紙の1.5インチ幅の試験片を、上述のような乾燥した膜の上部で加圧した。別のアニロックスロールを使用し、紙を前後に5回、穏やかに加圧した。次いで、サンプル紙をLab Master(登録商標)Slip and Friction機に取り付けた。室温で、「デモ」モードを使用し、180°で剥離力を測定した。それぞれのサンプルについて3回ずつ行った。
剥離剤(例えば、Dow Corning(登録商標)57添加剤)を加えることによって、図1および図2に示すように、剥離力は、潤滑剤を含まないコントロールと比較して、約3分の1の低下を示した。
Claims (10)
- 少なくとも1つの親水性ポリマーと;
少なくとも1つの界面活性剤と;
少なくとも1つの吸湿剤と;
少なくとも1つの非反応性シリコーン剥離剤と;
水とを含む、犠牲コーティング組成物。 - 前記少なくとも1つの非反応性シリコーン剥離剤が、組成物の合計重量に対して約0.001重量%〜約2重量%の範囲の量で存在する、請求項1に記載の犠牲コーティング組成物。
- 前記少なくとも1つの非反応性シリコーン剥離剤が、ポリエーテル修飾された有機ポリシロキサン化合物、ポリエーテル修飾されたポリシロキサンおよび非反応性シリコーングリコールコポリマーから選択される、請求項1に記載の犠牲コーティング組成物。
- 前記少なくとも1つの非反応性シリコーン剥離剤は、少なくとも約70%のジメチル,メチル(ポリエチレンオキシドアセテートで保護された)シロキサンを含む、請求項1に記載の犠牲コーティング組成物。
- 前記少なくとも1つの親水性ポリマーは、ポリ(ビニルピロリジノン)(PVP)、ポリ(エチレンオキシド)、ヒドロキシエチルセルロース、酢酸セルロース、ポリ(エチレングリコール)、ポリ(エチレングリコール)のコポリマー、ポリアクリルアミド(PAM)、ポリ(N−イソプロピルアクリルアミド)(PNIPAM)、ポリ(アクリル酸)、ポリメタクリレート、アクリルポリマー、無水マレイン酸コポリマー、スルホン酸化ポリエステル、およびこれらの混合物からなる群から選択される、請求項1に記載の犠牲コーティング組成物。
- 転写固定印刷に適したブランケット材料であって、
ポリシロキサンゴムおよびフッ素化ポリマーのうち少なくとも1つを含む第1基材と;
前記第1基材の上部にあり、少なくとも1つの親水性ポリマー;少なくとも1つの界面活性剤;少なくとも1つの吸湿剤;少なくとも1つの非反応性シリコーン剥離剤;および水を含む犠牲コーティングを含む第2の基材とを含む、ブランケット材料。 - 前記少なくとも1つの非反応性シリコーン剥離剤は、ポリエーテル修飾されたポリシロキサンおよび非反応性シリコーングリコールコポリマーから選択される、請求項6に記載のブランケット材料。
- 前記少なくとも1つの親水性ポリマーが、ワックス状トウモロコシデンプン、ポリビニルアルコール、ポリ(ビニルアルコール−コ−エチレン)、ポリ(アクリル酸)−ポリ(ビニルアルコール)コポリマー、ポリビニルアルコール−アクリル酸−メタクリル酸メチルコポリマー、ポリ(ビニルピロリジノン)(PVP)、ポリ(エチレンオキシド)、ヒドロキシエチルセルロース、酢酸セルロース、ポリ(エチレングリコール)、ポリ(エチレングリコール)のコポリマー、ポリアクリルアミド(PAM)、ポリ(N−イソプロピルアクリルアミド)(PNIPAM)、ポリ(アクリル酸)、ポリメタクリレート、アクリルポリマー、無水マレイン酸コポリマー、スルホン酸化ポリエステル、およびこれらの混合物からなる群から選択される、請求項6に記載のブランケット材料。
- 間接的な印刷プロセスであって、
中間転写体を備えるインクジェット印刷装置にインク組成物を提供することと;
中間転写体に犠牲コーティング組成物を塗布し、この犠牲コーティング組成物が、少なくとも1つの親水性ポリマー;少なくとも1つの界面活性剤;少なくとも1つの吸湿剤;少なくとも1つの非反応性シリコーン剥離剤;および水を含むことと;
前記犠牲コーティング組成物の上に画像状のパターンにインク液滴を放出することと;
前記インクを少なくとも部分的に乾燥させ、前記中間転写体の上にインクパターンを作成することと;
前記インクパターンおよび前記犠牲コーティング組成物を、前記中間転写体から基材へと転写することとを含む、方法。 - 前記少なくとも1つの親水性ポリマーが、ワックス状トウモロコシデンプン、ポリビニルアルコール、ポリ(ビニルアルコール−コ−エチレン)、ポリ(アクリル酸)−ポリ(ビニルアルコール)コポリマー、ポリビニルアルコール−アクリル酸−メタクリル酸メチルコポリマー、ポリ(ビニルピロリジノン)(PVP)、ポリ(エチレンオキシド)、ヒドロキシエチルセルロース、酢酸セルロース、ポリ(エチレングリコール)、ポリ(エチレングリコール)のコポリマー、ポリアクリルアミド(PAM)、ポリ(N−イソプロピルアクリルアミド)(PNIPAM)、ポリ(アクリル酸)、ポリメタクリレート、アクリルポリマー、無水マレイン酸コポリマー、スルホン酸化ポリエステル、およびこれらの混合物からなる群から選択される、請求項9に記載の間接的な印刷プロセス。
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US14/504,707 US9428664B2 (en) | 2014-10-02 | 2014-10-02 | Undercoat layer with low release force for aqueous printing transfix system |
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CN106193338A (zh) * | 2016-08-29 | 2016-12-07 | 中国水利水电第十四工程局有限公司 | 一种清水混凝土耐久性保护施工方法 |
JP2017030356A (ja) * | 2015-07-28 | 2017-02-09 | キヤノン株式会社 | 中間転写体、画像記録装置及び画像記録方法 |
US10618333B2 (en) | 2018-01-30 | 2020-04-14 | Konica Minolta, Inc. | Image forming method and image forming apparatus |
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Also Published As
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JP6472359B2 (ja) | 2019-02-20 |
US9744790B2 (en) | 2017-08-29 |
US9902867B2 (en) | 2018-02-27 |
US20160096968A1 (en) | 2016-04-07 |
US9428664B2 (en) | 2016-08-30 |
DE102015218604A1 (de) | 2016-04-07 |
US20160289482A1 (en) | 2016-10-06 |
US20160297228A1 (en) | 2016-10-13 |
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