JPS63319192A - Thermal transfer material - Google Patents
Thermal transfer materialInfo
- Publication number
- JPS63319192A JPS63319192A JP62154312A JP15431287A JPS63319192A JP S63319192 A JPS63319192 A JP S63319192A JP 62154312 A JP62154312 A JP 62154312A JP 15431287 A JP15431287 A JP 15431287A JP S63319192 A JPS63319192 A JP S63319192A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- ink
- transfer
- film
- photo
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 14
- 239000000126 substance Substances 0.000 claims abstract description 10
- 238000002844 melting Methods 0.000 claims description 7
- 239000000975 dye Substances 0.000 abstract description 8
- 239000004065 semiconductor Substances 0.000 abstract description 6
- 239000002985 plastic film Substances 0.000 abstract description 5
- 229920006255 plastic film Polymers 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 229920000877 Melamine resin Polymers 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 239000000654 additive Substances 0.000 abstract description 2
- 239000001000 anthraquinone dye Substances 0.000 abstract description 2
- 239000011230 binding agent Substances 0.000 abstract description 2
- 239000000049 pigment Substances 0.000 abstract description 2
- ANRHNWWPFJCPAZ-UHFFFAOYSA-M thionine Chemical compound [Cl-].C1=CC(N)=CC2=[S+]C3=CC(N)=CC=C3N=C21 ANRHNWWPFJCPAZ-UHFFFAOYSA-M 0.000 abstract description 2
- 239000004640 Melamine resin Substances 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000004321 preservation Methods 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 239000000976 ink Substances 0.000 description 18
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 229920001721 polyimide Polymers 0.000 description 4
- 238000007639 printing Methods 0.000 description 4
- 239000004642 Polyimide Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- YRZZLAGRKZIJJI-UHFFFAOYSA-N oxyvanadium phthalocyanine Chemical compound [V+2]=O.C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 YRZZLAGRKZIJJI-UHFFFAOYSA-N 0.000 description 3
- 239000012188 paraffin wax Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229930192627 Naphthoquinone Natural products 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- QHIWVLPBUQWDMQ-UHFFFAOYSA-N butyl prop-2-enoate;methyl 2-methylprop-2-enoate;prop-2-enoic acid Chemical compound OC(=O)C=C.COC(=O)C(C)=C.CCCCOC(=O)C=C QHIWVLPBUQWDMQ-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002791 naphthoquinones Chemical class 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/382—Contact thermal transfer or sublimation processes
- B41M5/38207—Contact thermal transfer or sublimation processes characterised by aspects not provided for in groups B41M5/385 - B41M5/395
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は熱転写材料に関する。さらに詳しく述べるなら
ば、本発明は、コンピュータの出力端末やファクシミリ
等の熱転写プリンタに用いることのできる、レーザ光照
射により熱転写するための熱転写材料に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to thermal transfer materials. More specifically, the present invention relates to a thermal transfer material for thermal transfer by laser beam irradiation, which can be used in thermal transfer printers such as computer output terminals and facsimiles.
従来、熱転写プリンタによる印字方式としては、サーマ
ルヘッドによってインクフィルムに塗布されたインクを
熱溶融させ、転写体に転写して印字する方式が一般的で
ある。しかし、サーマルヘッドによる場合、熱特性の維
持および発熱抵抗体の保護のため、印加パルス周期を２
ｍ５ｅｃより短かくすることができないので、印字速
度に限界がある。Conventionally, as a printing method using a thermal transfer printer, a method is generally used in which ink applied to an ink film by a thermal head is thermally melted and transferred to a transfer body for printing. However, when using a thermal head, the application pulse period is reduced to 2 to maintain thermal characteristics and protect the heating resistor.
Since it cannot be made shorter than m5ec, there is a limit to the printing speed.
この問題を解決するために、レーザ光を用いて直接イン
クフィルムに塗布されたインクを溶融させることによっ
て、高速印字を行う方式が、特開昭５９−１４３６５７
等に提案されているが、高速で直接インクを溶融させる
ためには高出力のレーザが必要であり、半導体レーザ等
のコンパクトな光源では高速化は困難である。また、こ
れらの問題を解決するために、光バルブまたはカーボン
等を用いた蓄熱層を用いるなどの方法が提案されている
が、低エネルギーで鮮明な画像を得るには不充分である
。また、特開昭６１−２９１１８４には、ロイコ染料を
用いて顕色剤との組合せで鮮明な転写像を得る試みが提
案されているが、得られる転写像はロイコ型染料による
ものであるため、長期保存には適さない。In order to solve this problem, a method of high-speed printing by melting the ink directly applied to the ink film using laser light was proposed in Japanese Patent Laid-Open No. 59-143657.
However, in order to directly melt the ink at high speed, a high-output laser is required, and it is difficult to increase the speed with a compact light source such as a semiconductor laser. Further, in order to solve these problems, methods such as using a light bulb or a heat storage layer using carbon or the like have been proposed, but these methods are insufficient to obtain clear images with low energy. Furthermore, Japanese Patent Application Laid-Open No. 61-291184 proposes an attempt to obtain a clear transferred image by using a leuco dye in combination with a color developer, but since the obtained transferred image is due to the leuco dye, , not suitable for long-term storage.
しかして、本発明の目的は、高感度で、しかも鮮明で、
保存安定性の良好な転写像を高速で得ることのできる熱
転写記録材料を提供することにある。Therefore, the purpose of the present invention is to provide high sensitivity, clear,
It is an object of the present invention to provide a thermal transfer recording material that allows transfer images with good storage stability to be obtained at high speed.
本発明によれば、支持フィルム上に熱溶融性インクを塗
布したインクフィルムからなる、レーザ光の照射により
転写体に前記熱溶融性インクを熱転写するための熱転写
材料であって、前記インクフィルム中に光を熱に変換す
る物質を含有せしめたことを特徴とする、熱転写材料が
提供される。According to the present invention, there is provided a thermal transfer material for thermally transferring the heat-fusible ink to a transfer body by irradiation with laser light, which comprises an ink film in which a heat-fusible ink is coated on a support film, wherein Provided is a thermal transfer material characterized in that it contains a substance that converts heat into heat.
本発明の熱転写材料においては、光を熱に変換する物質
は、熱溶融性インクの層中に直接含有せしめられてもよ
く、あるいは支持フィルム上に熱溶融性インク層ととも
に積層された発熱層として含有配置せしめられてもよい
。この物質は、レーザ光を吸収して発熱する物質であれ
ば任意に選ぶことが可能であるが、近年普及の著しい半
導体レーザを用いる場合は、特に、近赤外領域に特性吸
収を持つ物質が適当である。例としては、シアニン系色
素、スクワリリウム系色素、ナフトキノン系色素、アン
トラキノン系色素等があり、具体的には下記表１に示す
化合物を挙げることができる。In the thermal transfer material of the present invention, the substance that converts light into heat may be contained directly in the heat-melt ink layer, or as a heat-generating layer laminated on the support film together with the heat-melt ink layer. It may also be arranged in a contained manner. This material can be arbitrarily selected as long as it absorbs laser light and generates heat, but when using semiconductor lasers, which have become popular in recent years, it is especially important to use a material that has characteristic absorption in the near-infrared region. Appropriate. Examples include cyanine dyes, squarylium dyes, naphthoquinone dyes, and anthraquinone dyes, and specific examples include compounds shown in Table 1 below.
以下余白
これらの近赤外線吸収色素は、直接塗布して適用しても
よく、または尿素−メラミン樹脂、尿素−ホルマリン樹
脂、エポキシ樹脂、ウレタン樹脂、アクリル樹脂、ポリ
エステル樹脂、ポリイミド樹脂、ポリエーテル樹脂、ポ
リスルホン樹脂等をバインダーとして用いて適用しても
よい。These near-infrared absorbing dyes may be applied by direct coating, or may be applied using urea-melamine resins, urea-formalin resins, epoxy resins, urethane resins, acrylic resins, polyester resins, polyimide resins, polyether resins, A polysulfone resin or the like may be used as a binder.
熱溶融性インクとしては、顔料、ワックス、オイル、添
加剤等より構成される一般によく知られたものが使用可
能である。As the heat-melting ink, generally well-known inks composed of pigments, waxes, oils, additives, etc. can be used.
これらの光−熱変換物質および熱溶融性インクは、通常
、プラスチックフィルム上に、光−熱変換物質から熱溶
融性インクの順に塗布される。あるいは、光−熱変換物
質を含む熱溶融性インク層として塗布される。用いられ
るプラスチックフィルムとしては、例えば、ポリエステ
ル、ポリイミド、ポリ塩化ビニル、ポリエチレン、ポリ
プロピレン等のフィルムを挙げることができるが、半導
体レーザ光を透過するフィルムであれば、上記のものに
限らず用いることが可能である。These light-to-heat converting substances and heat-melting inks are usually applied onto a plastic film in this order from the light-to-heat converting substance to the heat-melting ink. Alternatively, it is applied as a heat-melting ink layer containing a light-to-heat converting substance. Examples of plastic films that can be used include films made of polyester, polyimide, polyvinyl chloride, polyethylene, polypropylene, etc., but any film that transmits semiconductor laser light can be used without being limited to the above. It is possible.
転写体、特に受容シートとしては、紙、合成紙、Ｃ１７
）
プラスチックフィルム等を挙げることができる。As the transfer material, especially the receiving sheet, paper, synthetic paper, C17
) Plastic films, etc. can be mentioned.
以下に、実施例を挙げ、本発明をさらに説明する。例中
、「部」は重量部を示す。The present invention will be further explained below with reference to Examples. In the examples, "parts" indicate parts by weight.
実施例１
バナジルフタロシアニン５部、カーボンブランク５部、
およびパラフィンワックス１５部を、７５部のトルエン
に分散、溶解し、厚さ６廂のポリエステルフィルムにワ
イヤーバーコーティングにより塗布した後、乾燥し、得
られる感熱インク層の厚さを３ｎとなるようにして、転
写記録フィルムを作成した。これを普通紙とかさね合せ
、ポリエステルフィルム側より半導体レーザ（波長８３
０ｎｍ、出力３０ｍＷ）を光学系を通して、２５廂径の
スポット状として照射し、良好な転写像を得た。Example 1 5 parts of vanadyl phthalocyanine, 5 parts of carbon blank,
and 15 parts of paraffin wax were dispersed and dissolved in 75 parts of toluene, applied to a 6-thick polyester film by wire bar coating, dried, and the resulting heat-sensitive ink layer was made to have a thickness of 3n. A transfer recording film was prepared. This was layered with plain paper, and a semiconductor laser (wavelength 83
0 nm, output 30 mW) was irradiated in the form of a spot with a diameter of 25 square meters through an optical system, and a good transferred image was obtained.
結果を表２に示す。The results are shown in Table 2.
実施例２
バナジルフタロシアニン２０部をポリイミドワニス８０
部に分散させ、ワイヤーバーコーティングによりポリア
ミドフィルムにコートし、乾燥した。加熱硬化後に、得
られた発熱層の厚さは５廂であった。さらに、この発熱
層上にカーボンブラック５部、パラフィンワックス１５
部およびトルエン７５部からなる液を塗布して、厚さ３
廂のインク層を設けた。この転写フィルムと普通紙とを
かさね合せ、フィルム側より半導体レーザ（波長８３０
ｎｍ、出力３０ｍＷ）を光学系を通して、２５卿径のス
ポット状として照射し、良好な転写像を得た。Example 2 20 parts of vanadyl phthalocyanine and 80 parts of polyimide varnish
It was coated onto a polyamide film by wire bar coating and dried. After heating and curing, the thickness of the heat generating layer obtained was 5 cm. Furthermore, on this heating layer, 5 parts of carbon black and 15 parts of paraffin wax were added.
3 parts thick and 75 parts toluene.
An ink layer was provided on the other side. This transfer film and plain paper are stacked together, and a semiconductor laser (wavelength 830
A good transferred image was obtained by irradiating a spot with a diameter of 25 nm through an optical system (power: 30 mW).
結果を表２に示す。The results are shown in Table 2.
実施例３
０一ダミン６Ｇ２０部をポリイミドワニス８０部に分散
ワイヤーバーコーティングによりポリアミドフィルムに
コートし、加熱硬化後に得られる発熱層が５ＩＩｍの厚
みとなるようにした。さらに、この上にカーボンブラッ
ク５部、パラフィンワックス１５部およびトルエン７５
部からなる液を塗布して、厚さ３廂のインク層を設けた
。この転写フィルムと普通紙とをかさね合せ、フィルム
側よりＡｒレーザ（波長５１５ｎｍ、出力５０ｍ１ｉｌ
）を光学系を通して、２５／／Ｉｎ径のスポット状とし
て照射し、良好な転写像を得た。Example 3 20 parts of O-Damine 6G was dispersed in 80 parts of polyimide varnish and coated on a polyamide film by wire bar coating, so that the heat-generating layer obtained after heating and curing had a thickness of 5 IIm. Furthermore, on top of this, 5 parts of carbon black, 15 parts of paraffin wax and 75 parts of toluene.
An ink layer of 3 feet thick was formed by applying a liquid consisting of 1. This transfer film and plain paper were stacked together, and an Ar laser (wavelength 515 nm, output 50 ml) was applied from the film side.
) was irradiated as a spot with a diameter of 25//In through an optical system to obtain a good transferred image.
結果を表２に示す。The results are shown in Table 2.
比較例
実施例１において、バナジルフタロシアニンを用いなか
った以外は、同様の方法で転写フィルムを作成し、これ
に普通紙をかさねて、サーマルヘッド（１２ｄｏｔ／ｍ
、 ０．７ｍＷ／ｄａｔのラインヘッド）でサーマル記
録を行った。Comparative Example A transfer film was prepared in the same manner as in Example 1, except that vanadyl phthalocyanine was not used.
, 0.7 mW/dat line head).
結果を表２に示す。The results are shown in Table 2.
本発明によれば、レーザ光照射により熱転写印字するこ
とのできる熱転写材料が提供され、高感度で、鮮明かつ
保存安定性の良好な転写像を高速で得ることが可能とな
る。According to the present invention, a thermal transfer material capable of thermal transfer printing by laser beam irradiation is provided, and it becomes possible to obtain transferred images with high sensitivity, clarity, and good storage stability at high speed.
Claims (1)
フィルムからなる、レーザ光の照射により転写体に前記
熱溶融性インクを熱転写するための熱転写材料であって
、前記インクフィルム中に光を熱に変換する物質を含有
せしめたことを特徴とする、熱転写材料。1. A thermal transfer material for thermally transferring the heat-melting ink to a transfer body by irradiation with laser light, which is composed of an ink film in which heat-melting ink is applied on a support film, and converting light into heat in the ink film. A thermal transfer material characterized by containing a substance that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62154312A JPS63319192A (en) | 1987-06-23 | 1987-06-23 | Thermal transfer material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62154312A JPS63319192A (en) | 1987-06-23 | 1987-06-23 | Thermal transfer material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63319192A true JPS63319192A (en) | 1988-12-27 |
Family
ID=15581365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62154312A Pending JPS63319192A (en) | 1987-06-23 | 1987-06-23 | Thermal transfer material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63319192A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0330991A (en) * | 1989-06-16 | 1991-02-08 | Eastman Kodak Co | Infrared ray absorbing merocyanine dye for dye donating element which is used for laser induction dye heat transfer |
| JPH0330992A (en) * | 1989-06-16 | 1991-02-08 | Eastman Kodak Co | Infrared ray absorbing oxonol dye for dye donating element which is used for laser induction dye heat transfer |
| JPH0363185A (en) * | 1989-06-20 | 1991-03-19 | Eastman Kodak Co | Infrared absorption nickel-dithiolene dye complex for dye donor element for use in laser induced dye thermal transfer |
| EP0482595A1 (en) * | 1990-10-25 | 1992-04-29 | E.I. Du Pont De Nemours And Company | Donor element for thermal imaging containing infra-red absorbing squarlium compound |
| EP0552251A1 (en) * | 1990-10-04 | 1993-07-28 | Rexham Graphics Inc. | Improved ablation-transfer imaging/recording |
| EP0568267A2 (en) * | 1992-04-27 | 1993-11-03 | Minnesota Mining And Manufacturing Company | Thermal transfer materials |
| US5840463A (en) * | 1997-07-14 | 1998-11-24 | E. I. Du Pont De Nemours And Company | Photosensitive donor element assemblages and associated process for laser-induced thermal transfer |
| US5843617A (en) * | 1996-08-20 | 1998-12-01 | Minnesota Mining & Manufacturing Company | Thermal bleaching of infrared dyes |
| US5856061A (en) * | 1997-08-14 | 1999-01-05 | Minnesota Mining And Manufacturing Company | Production of color proofs and printing plates |
| US5863860A (en) * | 1995-01-26 | 1999-01-26 | Minnesota Mining And Manufacturing Company | Thermal transfer imaging |
| US6001530A (en) * | 1997-09-02 | 1999-12-14 | Imation Corp. | Laser addressed black thermal transfer donors |
| US6143451A (en) * | 1996-11-26 | 2000-11-07 | E. I. Du Pont De Nemours And Company | Imaged laserable assemblages and associated processes with high speed and durable image-transfer characteristics for laser-induced thermal transfer |
| WO2002083798A1 (en) * | 2001-04-17 | 2002-10-24 | Gentex Corporation | Ink compositions involving near-infrared absorber dyes and use in ink jet printing devices |
| US6855474B1 (en) | 2004-05-03 | 2005-02-15 | Kodak Polychrome Graphics Llc | Laser thermal color donors with improved aging characteristics |
| US6899988B2 (en) | 2003-06-13 | 2005-05-31 | Kodak Polychrome Graphics Llc | Laser thermal metallic donors |
| US7913622B2 (en) | 2003-04-09 | 2011-03-29 | Heidelberger Druckmaschinen Ag | Method for drying a printing ink on a printing substrate in a printing press, and a printing press |
| WO2021228943A1 (en) | 2020-05-12 | 2021-11-18 | Hueck Folien Gesellschaft M.B.H. | Security element |
-
1987
- 1987-06-23 JP JP62154312A patent/JPS63319192A/en active Pending
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0512157B2 (en) * | 1989-06-16 | 1993-02-17 | Eastman Kodak Co | |
| JPH0330992A (en) * | 1989-06-16 | 1991-02-08 | Eastman Kodak Co | Infrared ray absorbing oxonol dye for dye donating element which is used for laser induction dye heat transfer |
| JPH0330991A (en) * | 1989-06-16 | 1991-02-08 | Eastman Kodak Co | Infrared ray absorbing merocyanine dye for dye donating element which is used for laser induction dye heat transfer |
| JPH0512159B2 (en) * | 1989-06-16 | 1993-02-17 | Eastman Kodak Co | |
| JPH0363185A (en) * | 1989-06-20 | 1991-03-19 | Eastman Kodak Co | Infrared absorption nickel-dithiolene dye complex for dye donor element for use in laser induced dye thermal transfer |
| EP0552251B1 (en) * | 1990-10-04 | 2001-01-10 | PGI Graphics Imaging LLC | Improved ablation-transfer imaging/recording |
| EP0552251A1 (en) * | 1990-10-04 | 1993-07-28 | Rexham Graphics Inc. | Improved ablation-transfer imaging/recording |
| EP0482595A1 (en) * | 1990-10-25 | 1992-04-29 | E.I. Du Pont De Nemours And Company | Donor element for thermal imaging containing infra-red absorbing squarlium compound |
| EP0568267A2 (en) * | 1992-04-27 | 1993-11-03 | Minnesota Mining And Manufacturing Company | Thermal transfer materials |
| EP0568267A3 (en) * | 1992-04-27 | 1993-12-01 | Minnesota Mining & Mfg | Thermal transfer materials |
| US5863860A (en) * | 1995-01-26 | 1999-01-26 | Minnesota Mining And Manufacturing Company | Thermal transfer imaging |
| US5843617A (en) * | 1996-08-20 | 1998-12-01 | Minnesota Mining & Manufacturing Company | Thermal bleaching of infrared dyes |
| US6143451A (en) * | 1996-11-26 | 2000-11-07 | E. I. Du Pont De Nemours And Company | Imaged laserable assemblages and associated processes with high speed and durable image-transfer characteristics for laser-induced thermal transfer |
| US5840463A (en) * | 1997-07-14 | 1998-11-24 | E. I. Du Pont De Nemours And Company | Photosensitive donor element assemblages and associated process for laser-induced thermal transfer |
| US5856061A (en) * | 1997-08-14 | 1999-01-05 | Minnesota Mining And Manufacturing Company | Production of color proofs and printing plates |
| US6001530A (en) * | 1997-09-02 | 1999-12-14 | Imation Corp. | Laser addressed black thermal transfer donors |
| WO2002083798A1 (en) * | 2001-04-17 | 2002-10-24 | Gentex Corporation | Ink compositions involving near-infrared absorber dyes and use in ink jet printing devices |
| US7913622B2 (en) | 2003-04-09 | 2011-03-29 | Heidelberger Druckmaschinen Ag | Method for drying a printing ink on a printing substrate in a printing press, and a printing press |
| US6899988B2 (en) | 2003-06-13 | 2005-05-31 | Kodak Polychrome Graphics Llc | Laser thermal metallic donors |
| US6855474B1 (en) | 2004-05-03 | 2005-02-15 | Kodak Polychrome Graphics Llc | Laser thermal color donors with improved aging characteristics |
| WO2021228943A1 (en) | 2020-05-12 | 2021-11-18 | Hueck Folien Gesellschaft M.B.H. | Security element |
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