JP5351265B2 - 液体電子写真印刷で使用される複合コーティング及び基体並びに方法 - Google Patents
液体電子写真印刷で使用される複合コーティング及び基体並びに方法 Download PDFInfo
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連邦政府による資金提供を受けた研究開発の記載
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Claims (13)
- 液体電子写真印刷(LEP)システムであって
a)キャリア液体と、酸性基を有するポリマーベースの顔料粒子とを含むLEPインク、並びに
b)LEP印刷に適合する基体材料と、当該基体材料上に組み込まれている複合コーティング(100)とを有する基体であって、当該複合コーティング(100)が、
1ミクロン未満の粒径を有する鉱物性顔料(110)を4.5%〜9.5重量%、及び
有機バインダ(120)を0.5%〜2重量%含み、
前記鉱物性顔料(110)及び前記有機バインダ120が、水中で均一に拡散されており、前記有機バインダ(120)が、50,000を超える平均分子量を有するヒドロキシル化ポリマー(122)を含み、該ヒドロキシル化ポリマー(122)中のヒドロキシル基(124)の重量パーセントが、前記LEPインク中のポリマーベースの顔料粒子の酸性基の重量パーセント以上である、基体
を備えており、
前記LEPインクと、前記基体の表面上で乾燥させた当該複合コーティング(100)を備えている前記基体との付着が増大されている、システム。 - 前記鉱物性顔料(110)の粒径が、50ナノメートル〜350ナノメートルである、請求項1に記載のLEPシステム。
- 前記ヒドロキシル化ポリマー(122)が、98〜99%加水分解されているポリビニルアルコール(122)からなり、前記ポリビニルアルコール(122)の平均分子量が、100,000〜200,000である、請求項1から2のいずれか1項に記載のLEPシステム。
- 前記ヒドロキシル化ポリマー(122)中のヒドロキシル基(124)の重量パーセントが、70重量パーセント以下である、請求項1から3のいずれか1項に記載のLEPシステム。
- 前記ヒドロキシル化ポリマー(122)が、一般的な化学的構造
R1−(CR3R4−CR5OH)n−R2
を有し、
Rl、R2、R3、R4及びR5が、独立して、水素、ヒドロキシル基(124)及び1〜10,000個の炭素を有する有機化合物(126)うちの1つであり、前記有機化合物(126)が、アルキル、アルコキシ、アリール、アミン、アミド、アクリレート、エステル、フェノール、ペプチド、有機ハロゲン化物、炭水化物、第4級アンモニウム化合物、複素環式化合物及び多環式化合物のうちの1つ以上を含み、nが1〜10,000である、請求項1から4のいずれか1項に記載のLEPシステム。 - 前記ヒドロキシル化ポリマー(122)が、アタクチック巨大分子である、請求項1から5のいずれか1項に記載のLEPシステム。
- 前記鉱物性顔料(110)が、二酸化チタン、沈降炭酸カルシウム、摩砕炭酸カルシウム及びクレーのうちの1つ以上を含み、溶液中の鉱物性顔料(110)の量が5重量%であり、前記鉱物性顔料(110)の粒径が、0.8ミクロン以下である、請求項1から6のいずれか1項に記載のLEPシステム。
- 前記鉱物性顔料(110)の量が5重量%であり、前記鉱物性顔料(110)が、沈降炭酸カルシウム及び二酸化チタンの一方又は両方を含み、前記鉱物性顔料(110)の粒径が、0.8ミクロン以下であり、
有機バインダ(120)の量が1%〜2重量%であり、前記有機バインダ(120)が、ポリビニルアルコール(122)及び溶解性の澱粉(126)を含み、前記ポリビニルアルコール(122)が98%〜99%加水分解されており、ポリビニルアルコール(122)の平均分子量が130,000である、請求項1から7のいずれか1項に記載のLEPシステム。 - 前記ヒドロキシル化ポリマー(122)の疎水性基(126)の親水性基(124、126)に対する比が、LEPインクの疎水性基の親水性基に対する比と同等であり、であり、前記疎水性基(126)が、当該複合コーティング(100)を備えている基体とLEPインクとの間の追加的な付着相互作用を促進する、請求項1から8のいずれか1項に記載のLEPシステム。
- 前記複合コーティング(100)が、前記LEPインクとの付着を促進する表面粗さ及び多孔性の一方又は両方を有する、請求項1から9のいずれか1項に記載のLEPシステム。
- LEP印刷における基体の、液体電子写真(LEP)インクへの付着を改善する方法(200)であって、
基体材料を複合コーティング(100)でコートし(210)、前記複合コーティング(100)が、水性媒体中に均一に拡散されている鉱物性顔料(110)4.5%〜9.5重量%及び有機バインダ(120)0.5%〜2重量%含み、前記鉱物性顔料(110)が、1ミクロン未満の粒径を有し、前記有機バインダ(120)が、50,000を超える平均分子量を有するヒドロキシル化ポリマー(122)を含み、
前記基体材料上の複合コーティング(100)を乾燥し(220)、それにより、複合コート基体を形成し、
LEP印刷を利用して前記複合コーティング基体上にLEPインクを印刷し、当該LEPインクが、キャリア液体と、酸性基を有するポリマーベースの顔料粒子とを含む、方法であって、
ヒドロキシル化ポリマー(122)中のヒドロキシル基(124)の重量パーセントが、LEPインク中のポリマーベースの顔料粒子の酸性基の重量パーセント以上である、方法。 - 前記複合コーティング(100)が、前記記基体材料と前記LEPインクとの間のファンデルワールス力、分散エネルギー、水素結合、イオン性結合及び酸塩基相互作用のうちの1つ以上を増大させ、
前記方法が、前記複合コート基体を加熱し、それにより、印刷されたLEPインクに残された任意の揮発性物質を気化させることをさらに含む、請求項11に記載の付着を改善する方法(200)。 - 前記基体材料をコートすること(210)が、
前記鉱物性顔料(110)を水中で前記有機バインダ(120)と混ぜ合わせ、それにより、複合スラリーを作り、
前記複合スラリーを、5時間〜24時間、前記鉱物性顔料(110)及び有機バインダ(120)が均一に拡散されるまで振とうによって混合し、
前記水性均一分散液を10分〜30分の時間、超音波処理し、それにより、任意の凝集体を破壊し、
前記基体の表面材料をコートする(210)するのに十分な量の凝集体不含の水性均一分散液(100)を前記基体材料へ塗布することを含む、請求項11又は12に記載の付着を改善する方法(200)。
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| PCT/US2008/071270 WO2010011230A1 (en) | 2008-07-25 | 2008-07-25 | Composite coating and substrate used in liquid electrophotographic printing and method |
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| EP (1) | EP2310915B1 (ja) |
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| WO (1) | WO2010011230A1 (ja) |
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| EP2978612A4 (en) * | 2013-03-27 | 2017-07-26 | Kloeckner Pentaplast of America, Inc. | Liquid coating, coated film and process for coating film |
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| WO2015065469A1 (en) | 2013-11-01 | 2015-05-07 | Hewlett-Packard Development Company, L.P. | High opacity white inks containing mica-based minerals with titania |
| EP3107971A4 (en) | 2014-02-20 | 2017-03-08 | Hewlett-Packard Development Company, L.P. | Liquid electrophotographic inks |
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2008
- 2008-07-25 EP EP08796676.8A patent/EP2310915B1/en not_active Not-in-force
- 2008-07-25 US US12/997,100 patent/US20110104441A1/en not_active Abandoned
- 2008-07-25 JP JP2011520014A patent/JP5351265B2/ja not_active Expired - Fee Related
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| JP2011529198A (ja) | 2011-12-01 |
| US20160085182A1 (en) | 2016-03-24 |
| WO2010011230A1 (en) | 2010-01-28 |
| EP2310915B1 (en) | 2018-04-25 |
| US10168644B2 (en) | 2019-01-01 |
| US20110104441A1 (en) | 2011-05-05 |
| EP2310915A4 (en) | 2012-04-11 |
| EP2310915A1 (en) | 2011-04-20 |
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