JPH02175291A - Sublimable heat transfer recording medium and heat transfer recording method - Google Patents
Sublimable heat transfer recording medium and heat transfer recording methodInfo
- Publication number
- JPH02175291A JPH02175291A JP63329170A JP32917088A JPH02175291A JP H02175291 A JPH02175291 A JP H02175291A JP 63329170 A JP63329170 A JP 63329170A JP 32917088 A JP32917088 A JP 32917088A JP H02175291 A JPH02175291 A JP H02175291A
- Authority
- JP
- Japan
- Prior art keywords
- adhesive layer
- transfer recording
- recording medium
- thermal transfer
- ink layer
- 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
- 238000000034 method Methods 0.000 title claims description 18
- 239000010410 layer Substances 0.000 claims abstract description 38
- 239000012790 adhesive layer Substances 0.000 claims abstract description 33
- 239000004065 semiconductor Substances 0.000 claims abstract description 18
- 239000000126 substance Substances 0.000 claims abstract description 18
- 238000010521 absorption reaction Methods 0.000 claims abstract description 5
- 238000000859 sublimation Methods 0.000 claims description 11
- 230000008022 sublimation Effects 0.000 claims description 11
- 239000011358 absorbing material Substances 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 2
- 239000006096 absorbing agent Substances 0.000 abstract description 11
- 230000000740 bleeding effect Effects 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 2
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011368 organic material Substances 0.000 abstract 1
- 238000004321 preservation Methods 0.000 abstract 1
- 230000005855 radiation Effects 0.000 abstract 1
- 239000000975 dye Substances 0.000 description 15
- 239000000463 material Substances 0.000 description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000006229 carbon black Substances 0.000 description 6
- 239000011230 binding agent Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 235000010980 cellulose Nutrition 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920003063 hydroxymethyl cellulose Polymers 0.000 description 2
- 229940031574 hydroxymethyl cellulose Drugs 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- -1 squarylium Chemical compound 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010011224 Cough Diseases 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 description 1
- 150000004056 anthraquinones Chemical class 0.000 description 1
- 125000000751 azo group Chemical group [*]N=N[*] 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 125000005594 diketone group Chemical group 0.000 description 1
- 239000000986 disperse dye Substances 0.000 description 1
- 239000012153 distilled water Substances 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
- 230000020169 heat generation Effects 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- IZMJMCDDWKSTTK-UHFFFAOYSA-N quinoline yellow Chemical compound C1=CC=CC2=NC(C3C(C4=CC=CC=C4C3=O)=O)=CC=C21 IZMJMCDDWKSTTK-UHFFFAOYSA-N 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- OKYDCMQQLGECPI-UHFFFAOYSA-N thiopyrylium Chemical compound C1=CC=[S+]C=C1 OKYDCMQQLGECPI-UHFFFAOYSA-N 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
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/46—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography characterised by the light-to-heat converting means; characterised by the heat or radiation filtering or absorbing means or layers
- B41M5/465—Infra-red radiation-absorbing materials, e.g. dyes, metals, silicates, C black
-
- 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
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/42—Intermediate, backcoat, or covering layers
- B41M5/426—Intermediate, backcoat, or covering layers characterised by inorganic compounds, e.g. metals, metal salts, metal complexes
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Thermal Transfer Or Thermal Recording In General (AREA)
Abstract
Description
（産業上の利用分野〕
本発明は昇華型熱転写記録媒体に関し、詳しくはレーザ
光を用いて熱転写を行う為の記録媒体及び記録方法に関
す−る。
〔従来の技術〕
スチルビデオカメラ、ビデオカメラ、ＴＶ、光ディスク
等から得られる電気信号に２２(Industrial Application Field) The present invention relates to a sublimation type thermal transfer recording medium, and more particularly to a recording medium and a recording method for performing thermal transfer using laser light. [Prior Art] Still video camera, video camera 22 to electrical signals obtained from , TV, optical discs, etc.
【き、フルカラーの画像
を記録する。いわゆるビデオプリンタの記録方式として
、昇華型熱転写方式は他のノンインパクトプリンティン
グ技術の中でも濃度階調表現が行える為に有力な記録方
法である。該昇華型熱転写方式ではサーマルヘッドを用
いる熱転写方法が一般に知られている。
〔発明が解決しようとするＢ題）
しかし、従来のサーマルヘッドを用いる熱転写方法では
２ヘツドの蓄熱効果のために記録速１９の高速化には限
界があり、問題となっていた。更に、サーマル記録の高
速化は記録媒体の高感度化によっても達成できるが媒体
の高感度化、即ち染料の熱拡散の高速化は染料分子の低
分−ｆ化によって可能ではあるが低分子染料は移動し易
い為、インクシート中またはプリント中での染料移動（
ａｉｉｇｒａｔｉｏｎ）が発生し、極めて保存安定性の
悪いものになり、現時点では高感度で高信頼性の記録媒
体は得られていない。
熱転写記録媒体の高速化という問題に対しては様々な方
法が提案されているが、中でもレーザを用いる力曾人が
知られている。例えば、インク層中にレーザ光を吸収す
るカーボンブラック粒子を分散させ、ｔｉｅ−Ｎｃレー
ザ光で熱転写を行うものが知られており、０．２Ｊ／ｃ
ｍ’のエネルギーで記録濃度０６が１７られている。
この様なレーザによる溶融１′！熱転写方式は媒体のイ
ンク層にカーホンブラックを含む為、カラー化が難しく
、川にサーマルヘッドを用いた場合と同様に中間調を表
現する事が困難である。一方、昇へ！型の場合はインク
層中にカーホンブラックを含４Ｙ したとしても、染料
のみが拡散移行するのでカーボンブラック粒子は移行せ
ず、原則としてカラー化は容易である。し・かじ、数μ
ｍのインク層中に多けのカーボンブラック粒子が存在す
ると、インク層自身のＩＩＱ強度が低下し、基材への接
着強度も低下するという問題が発生する。
方、インク層中に半導体レーザ光に感度を持つ１１機物
質を添加する事によって５インク層自身で発熱する高速
・高画質の半導体レーザ利用の４゜ｌ熱転写記録方法が
提案されているが、同物質（近赤外線吸収剤）のインク
層バインダーとの相溶性、インク層表面へのブリーディ
ング等の問題が発クーする可能性がある為、同法の通用
を難しくしていた。
本発明はト記問題点に鑑みなされたもので５ｆ導体レー
ザで記録可能な、保存安定性の高い昇ｆＣ型熱転写記録
媒体及び熱転写記録方法を提供する事を目的とする。
〔課題を解決するための手段〕
本発明は、基材上の片面に少なくとも接着層と昇華性染
料を含むインク層が順次設けられて成る昇争型熱転写記
録媒体に於いて、該接着層が近赤外線吸収物質を含有し
ている事を特徴とするＲ菫へν熱転写記録媒体であり、
該近赤外線吸収物質は半導体レーザの波長域に感度（吸
収）をもつため半導体レーザによる光照射により容易に
発熱させることができ、直接接着層を発熱させることに
より）１屑性染料を被記録媒体に熱転写させることがで
きる。さらに、本発明は７５０〜８９０ｎｍに発光ピー
クを持つ半導体レーザを用いて前記近赤外線吸収物質を
含有する接着層を基材側から光照射し高速で高画質の記
録画像を得る方法である。
以上の構成によれば、インク層と接する接着層自体が発
熱することとなり、サーマルヘッド等による加熱方式に
比べ効率良く熱転写を行なうことがｉｊＪ能である。
本発明において接着層に含有させる近赤外線吸収物質と
は近赤外線波長帯７８０−９００ｎｍにおいて著しい吸
収を示す物質であり、半導体レーザ等の照射エネルギー
により昇華性染料、を昇華させるに充分な発熱を起す物
質である。照射エネルギーの大きさはＨｅ−Ｎｅレーザ
等の気体レーザが大きいが、該近赤外線吸収物質は半導
体レーザ等による低エネルギーの照射によっても充分な
発熱を起１″ものか望ましい。半導体レーザは高密度励
起高効率であり実用面に俺わたレーザであるが、発振波
長帯は典型的なもので７ＱＯｎｍ帯、 ８００ｎｍ帯
、 ＋０００ｎｍ帯等であるため、前記近赤外線吸収物
質は好ましくは面記波長帯に吸収極大を示すものが良い
。
さらに好ましくは、半導体レーザの実用性の点から７５
ＯｎＩｍ〜８９０ｒ＋ｍの近赤外光を主に吸収するもの
である。
好ましい近赤外線物質としては２例えばポリメチン系色
素、アズレニウム系、ビリリウム系、チオピリリウム系
、スクワリリウム系、フタロシアン系の有機物であり、
近赤外線吸収剤として市販されている非極性溶媒可溶型
近赤外線吸収剤５１０１７５６、５１０９１８６ （Ｉ
ＣＩ製）；水溶性近赤外線吸収剤５１１６５１０．５
ＩＯＱ５６４ （／／ ） ；アルコール＝、Ｔ溶型
近赤外線吸収剤５１１６５］０／２．５１０９５６４／
２（〃）等を好適に用いることができる。第２図に十記
５１０１７５６の吸収スペクトル、表１に物性値の一部
を示す。
近赤外線吸収剤の接着層中の含ｔＴ量は、接着層を基材
Ｆに塗工後乾燥した状態で、該接着層の全重量に対し０
．１−１０重量％、好ましくは０．５〜５、ＯＷｉ量％
稈度である。含有量が０．１市礒％より少ないと発熱不
充分となり、１０．０重ｆ％を越えると同層表面での析
出が発生し、ベース面側、インク層側との界面での接着
強度が変化し、剥履が起きて好ましくない。
本発明の記録媒体は、上述の近赤外線吸収剤を使用する
慣を特徴とし、それ以外の構成は従来公知のものと同様
である。
以Ｆ本発明に係るその他の閾件について説明する。
本発明の熱転写記録媒体の構成に使用する基材シートは
、従来公知の、ある程度の引張強度と耐熱性を有するも
のであればよく、例えば、１〜２５μｍ好ましくは２〜
８μｌ程雄の厚さの各種加五紙、ポリエステルフィルム
、ポリプロピレンフィルム、ポリスルホンフィルム、ポ
リカーボネートフィルム、ポリビニルアセテートフィル
ム等であり、好ましくは２軸延伸のポリエステルフィル
ムである。
上記基材シートの表面に設けるインク層の厚みは１〜１
０μｍ、好ましくは２〜５μｍであり、同層中の昇華性
染料は １００〜３００℃ぐらいでシノー華するものが
好ましく、アゾ系、アントラキノン系キノフタロン系の
分散染料が使用され、具体的にはカヤロンファーストイ
エロー、カヤロンファーストブルー、カヤロンファース
トレッド、セリＬ・シフアーストイエロー。ジケトンフ
ァーストバイオレット等の公知の染料でよい。
又、上記染料をインク層に保存するバインダー樹脂とし
ては、こＪｌも従来公知のものを使用すわば良く、ボｌ
ノカーボネイト、ポリエステル類等が適する。
本発明の接着層バインダーは水系、溶剤系どちらでも良
いが、インク層染料の拡散能の小さいものを選択して使
えば良い。具体的には、とドロキシエチルセルロース、
ヒドロキシメチルセルロース等のセルロース類、又はア
クリル樹脂やブチラール樹脂、エポキシ樹脂やウレタン
樹脂等が挙げられる。又、同層は１〜１ｏμｍ、好まし
くは１〜５μｆｆ１Ｐ１度に形成されるのが良い。
尚、接着層及びインク層は常法に従い調整、塗工するこ
とができる。
最終的に得られる記録媒体の構成を示す模式横断面図を
第１図に示す。基材１上に接着層２が設けられ、さらに
インク層３が設けられており、接着層２中に近赤外Ｈ吸
収物質５及びインク層３中に昇華性染料４がそれぞれ均
一に分散し含有されている。又第１図に示した構成の他
滑性層等を基体反対側に設けてもよい。上述の構成によ
れば近赤外線吸収物質はインク層で覆われているため外
気に直接触ねることなくインク層表面からのブリーディ
ング等も発生せず保存安定性が優れている。
上記記録媒体を用い、熱転写記録を行なうには、半導体
レーザな所定の径のビームになるよう集光し記録速度を
設定して本発明の記録媒体を走査することにより行う。
本発明に用いられる半導体レーザとしては、従来公知の
ものでよく、波長域７５０〜８９０ｎｍに於いて、３０
〜１００ｍＷ程度の光出力を存するものであれば良い。
又、スポットサイズは１０〜１２ｐｅｌの密度で記録す
る事を考えると８０〜１００μＩｎ（紙Ｅ）程度でよい
。
〔実施例〕
以Ｆ、実施例にもとづき、本発明を１１、体的に述べる
。
実施例】
基材として７μｍの２軸延伸ＰＥＴフイルム（蛮人製）
に接着層中に近赤外線吸収物質が５１ｒｉ′量％含有さ
れるように次の組成を有する■接着層、■インク層を塗
工、乾燥し、乾燥膜厚１２μｌの界層型熱転写記録媒体
を得た。
隻互脛辺亙戎
ヒドロキシメチルセルロース １２ｍＪ部水溶性近赤
外線吸収剤５１１５５１０ ０．６ ／／（ＩＣ１社製
）
蒸留水 ８７ 、４ ））１−
記材料を混合攪拌し、ワイヤーバーコータでＰＥＴフィ
ルム［に塗工し乾燥膜厚２μのの接着層を形成した。
次に下記組成のインクを作成し、
イー″Ｌ２ｉＬ或
Ｗ信性染料： Ｓｕｍｉｐｌａｓｔ Ｒｅｄ＾Ｓ ３重
量部ハ・ｆンダー：アクリル樹脂ＬＲ−２１６ＩＯ）／
溶 剤；トルエン ８７〃充分混合−攪
打したのち、ワイヤーバーコータで１−記接着層のトに
塗工し、乾燥膜厚３μｌのインク層を射成し、本発明の
熱転好記録媒体を作成した。得られた記録媒体のインク
層と、表面（ポリエステル系樹脂の受容層を有する合成
紙ベースの受容紙を重ね、基材ベース側から半導体レー
ザＬＴＯ９０ＭＤ／ＭＦ （波長８３０ｎｍ 、最大光
出力１００１Ｌシヤープ婚製）のレーザ光を集光して約
１００μ謄径のビームを作り、記録速度７５にＨｚで走
査した。
＋Ｉ′ｊ後に記録媒体と受容紙を剥離してドツト径を測
定したところ、直径約７０〜８５μ国のドツトが得られ
た。
比較例１
実施例１における接着層のみを下記組成に要用した転写
記録媒体を作成した。
枇域
アクリル樹脂１．Ｒ−２１ｆｉ ２０ ｗ
ｔ％カーボンブラック（平均粒径３μｍ）
３０ 〃
トルエン ５０〃同記録媒体は
使用時にベースから接り一層及びインク層が剥離してし
まい熱転写記録を行なうことが不可能となった。
（発明の効宋〕
本発明の昇華型熱転写記録媒体は、半導体レーザの波長
域に感度（吸収）を有する近赤外線吸収剤を接着層に含
有している為、半導体レーザによる古き込みが可能であ
り、しかもインク層に接する接着層が発熱する為、効率
の良い熱転写が行える。更に基材とインク層の間の接着
層中に近赤外線吸収剤（有機物）か存在するので、イン
ク層表面からのブリーディング等が発生せず、保存安定
性にすぐわたレーザ熱転写用の記録媒体である。[Record full-color images.] As a recording method for so-called video printers, the sublimation thermal transfer method is an effective recording method among other non-impact printing techniques because it can express density gradation. In the sublimation type thermal transfer method, a thermal transfer method using a thermal head is generally known. [Problem B to be Solved by the Invention] However, in the conventional thermal transfer method using a thermal head, there is a limit to increasing the recording speed 19 due to the heat storage effect of the two heads, which has been a problem. Furthermore, increasing the speed of thermal recording can also be achieved by increasing the sensitivity of the recording medium, but increasing the sensitivity of the medium, that is, increasing the speed of thermal diffusion of the dye, is possible by reducing the fraction of the dye molecule. Because dyes move easily, dye movement (
aiigration), resulting in extremely poor storage stability, and at present no highly sensitive and highly reliable recording medium has been obtained. Various methods have been proposed to solve the problem of increasing the speed of thermal transfer recording media, and among them, the Rikisojin method using a laser is known. For example, it is known that carbon black particles that absorb laser light are dispersed in the ink layer, and thermal transfer is performed using a tie-Nc laser light, which is 0.2 J/c.
The recording density 06 is 17 with the energy of m'. Melting 1′ using such a laser! Since the thermal transfer method contains carbon black in the ink layer of the medium, it is difficult to create colors, and it is difficult to express halftones in the same way as when using a thermal head. On the other hand, to Noboru! In the case of molds, even if carbon black is included in the ink layer, only the dye is diffused and transferred, so the carbon black particles are not transferred, and in principle, colorization is easy. A few microns
If a large number of carbon black particles are present in the ink layer (m), a problem arises in that the IIQ strength of the ink layer itself decreases, and the adhesive strength to the base material also decreases. On the other hand, a 4°l thermal transfer recording method using a semiconductor laser has been proposed, which generates heat in the five ink layers themselves by adding 11 substances sensitive to semiconductor laser light to the ink layer, and uses a semiconductor laser to achieve high speed and high image quality. Problems such as the compatibility of the substance (near-infrared absorber) with the ink layer binder and bleeding onto the surface of the ink layer may occur, making it difficult to apply this method. The present invention was made in view of the above problems, and an object of the present invention is to provide an elevated fC type thermal transfer recording medium and a thermal transfer recording method that can be recorded with a 5f conductor laser and have high storage stability. [Means for Solving the Problems] The present invention provides a sublimation type thermal transfer recording medium in which at least an adhesive layer and an ink layer containing a sublimable dye are sequentially provided on one side of a substrate, in which the adhesive layer is An R-violet thermal transfer recording medium characterized by containing a near-infrared absorbing substance,
Since the near-infrared absorbing material has sensitivity (absorption) in the wavelength range of a semiconductor laser, it can be easily generated by light irradiation with a semiconductor laser, and by directly generating heat in the adhesive layer, the scrap dye can be transferred to the recording medium. can be thermally transferred to Further, the present invention is a method of obtaining high-quality recorded images at high speed by irradiating the adhesive layer containing the near-infrared absorbing substance with light from the base material side using a semiconductor laser having an emission peak in the range of 750 to 890 nm. According to the above configuration, the adhesive layer itself in contact with the ink layer generates heat, making it possible to perform thermal transfer more efficiently than a heating method using a thermal head or the like. In the present invention, the near-infrared absorbing substance contained in the adhesive layer is a substance that exhibits significant absorption in the near-infrared wavelength band of 780-900 nm, and generates sufficient heat to sublimate the sublimable dye by the irradiation energy of a semiconductor laser or the like. It is a substance. Gas lasers such as He-Ne lasers have a large irradiation energy, but it is desirable that the near-infrared absorbing material generates sufficient heat even when irradiated with low energy by a semiconductor laser or the like. Although it is a laser with high pumping efficiency and suitable for practical use, the oscillation wavelength band is typically 7QOnm band, 800nm band, +000nm band, etc., so the near-infrared absorbing material is preferably in the specified wavelength band. It is preferable to use one that shows absorption maximum.More preferably, from the point of view of practicality of semiconductor lasers, 75
It mainly absorbs near-infrared light of OnIm to 890r+m. Preferred near-infrared substances include organic substances such as polymethine dyes, azulenium, biryllium, thiopyrylium, squarylium, and phthalocyanine,
Commercially available non-polar solvent-soluble near-infrared absorbers 5101756 and 5109186 (I
CI); Water-soluble near-infrared absorber 5116510.5
IOQ564 (// ); Alcohol =, T-soluble near-infrared absorber 51165] 0/2.5109564/
2(〃) etc. can be suitably used. FIG. 2 shows the absorption spectrum of Juki 5101756, and Table 1 shows some of the physical property values. The amount of tT contained in the adhesive layer of the near-infrared absorber is 0 based on the total weight of the adhesive layer in the dry state after coating the adhesive layer on the base material F.
．． 1-10% by weight, preferably 0.5-5, OWi amount%
It is culm degree. If the content is less than 0.1% by weight, heat generation will be insufficient, and if it exceeds 10.0% by weight, precipitation will occur on the surface of the same layer, and the adhesive strength at the interface between the base surface side and the ink layer side will decrease. changes, causing peeling, which is undesirable. The recording medium of the present invention is characterized by the use of the above-mentioned near-infrared absorbent, and other configurations are similar to those conventionally known. Other threshold conditions related to the present invention will be explained below. The base sheet used in the construction of the thermal transfer recording medium of the present invention may be any conventionally known material having a certain degree of tensile strength and heat resistance, for example, 1 to 25 μm, preferably 2 to 25 μm.
Various types of paper, polyester film, polypropylene film, polysulfone film, polycarbonate film, polyvinyl acetate film, etc. each having a thickness of about 8 μl are used, and biaxially stretched polyester film is preferable. The thickness of the ink layer provided on the surface of the base sheet is 1 to 1
0 μm, preferably 2 to 5 μm, and the sublimable dye in the same layer is preferably one that blooms at about 100 to 300°C, and azo, anthraquinone, and quinophthalone disperse dyes are used. Ron First Yellow, Kayalon First Blue, Kayalon First Red, Seri L. Schiff First Yellow. Known dyes such as diketone first violet may be used. In addition, as the binder resin for storing the dye in the ink layer, any conventionally known binder resin may be used for this Jl, and the binder resin may be used as well.
Nocarbonates, polyesters, etc. are suitable. The adhesive layer binder of the present invention may be either water-based or solvent-based, but it is sufficient to select one that has a low diffusion ability for the ink layer dye. Specifically, and droxyethyl cellulose,
Examples include celluloses such as hydroxymethylcellulose, acrylic resins, butyral resins, epoxy resins, and urethane resins. Further, the same layer is preferably formed to have a thickness of 1 to 1 μm, preferably 1 to 5 μff1P. Incidentally, the adhesive layer and the ink layer can be adjusted and coated according to a conventional method. FIG. 1 shows a schematic cross-sectional view showing the structure of the recording medium finally obtained. An adhesive layer 2 is provided on a base material 1, and an ink layer 3 is further provided, and a near-infrared H absorbing substance 5 and a sublimable dye 4 are uniformly dispersed in the adhesive layer 2 and the ink layer 3, respectively. Contains. In addition to the structure shown in FIG. 1, a slippery layer or the like may be provided on the opposite side of the base. According to the above structure, since the near-infrared absorbing material is covered with the ink layer, it does not come into direct contact with the outside air and bleeding from the surface of the ink layer does not occur, resulting in excellent storage stability. In order to perform thermal transfer recording using the above recording medium, the recording medium of the present invention is scanned by focusing a beam of a semiconductor laser to a predetermined diameter and setting the recording speed. The semiconductor laser used in the present invention may be any conventionally known one, and has a wavelength range of 30 nm to 890 nm.
It is sufficient if it has an optical output of about 100 mW. Further, considering that recording is performed at a density of 10 to 12 pels, the spot size may be approximately 80 to 100 μIn (Paper E). [Example] Hereinafter, the present invention will be specifically described based on Example 11. Example: 7 μm biaxially stretched PET film (manufactured by Banjin) as the base material
An adhesive layer and an ink layer having the following compositions were applied so that the adhesive layer contained 51 ri'% of the near-infrared absorbing substance, and dried to form an interlayer thermal transfer recording medium with a dry film thickness of 12 μl. Obtained. Hydroxymethyl cellulose 12 mJ part Water-soluble near-infrared absorber 5115510 0.6 // (manufactured by IC1) Distilled water 87, 4)) 1-
The above materials were mixed and stirred and coated on a PET film using a wire bar coater to form an adhesive layer with a dry film thickness of 2 μm. Next, an ink with the following composition was prepared: 3 parts by weight of Sumiplast Red^S; Solvent: Toluene; 3 parts by weight. Thereafter, a wire bar coater was used to coat the adhesive layer in item 1, and an ink layer with a dry film thickness of 3 μl was injected to produce a heat transferable recording medium of the present invention.The ink layer of the obtained recording medium and the surface (synthetic paper-based receptor paper with a polyester resin receptor layer) was layered, and the laser beam of the semiconductor laser LTO90MD/MF (wavelength 830 nm, maximum optical output 1001L manufactured by Sharp Kon) was focused from the base material side. A beam with a diameter of approximately 100 μm was created and scanned at a recording speed of 75 Hz. After +I'j, the recording medium and receiving paper were peeled off and the dot diameter was measured, and dots with a diameter of approximately 70 to 85 μm were obtained. Comparative Example 1 A transfer recording medium was prepared using only the adhesive layer in Example 1 with the following composition.Base area acrylic resin 1.R-21fi 20w
t% carbon black (average particle size 3 μm) 30 Toluene 50 During use, the contact layer and ink layer of the recording medium peeled off from the base, making it impossible to perform thermal transfer recording. (Effects of the Invention) The sublimation thermal transfer recording medium of the present invention contains a near-infrared absorber that is sensitive (absorbed) in the wavelength range of semiconductor lasers in the adhesive layer, so it can be aged by semiconductor lasers. Moreover, since the adhesive layer in contact with the ink layer generates heat, efficient thermal transfer can be performed.Furthermore, since near-infrared absorbers (organic substances) are present in the adhesive layer between the base material and the ink layer, This is a recording medium for laser thermal transfer that does not cause bleeding or other problems and has excellent storage stability.
第１図は本発明の昇華型熱転写記録媒体の構成を示す模
式断面図、第２図は本発明において用いることのできる
近赤外線吸収剤Ｓ１＋６５１０ （水溶液）の分光吸収
スペクトルを示す図である。
１ 基材
２ 接着層
３ インク層
４ 昇華性染料
５ 近赤外線吸収物質
第 １
図
特許出願人 キャノン株式会社
代 理 人 若 林 忠５１１６５１０
（水溶液）め咳ヰ又又ｗ７’ｒル第２図FIG. 1 is a schematic cross-sectional view showing the structure of the sublimation type thermal transfer recording medium of the present invention, and FIG. 2 is a diagram showing the spectral absorption spectrum of the near-infrared absorber S1+6510 (aqueous solution) that can be used in the present invention. 1 Base material 2 Adhesive layer 3 Ink layer 4 Sublimable dye 5 Near-infrared absorbing material Figure 1 Patent applicant Canon Co., Ltd. Agent Tadashi Wakabayashi 5116510
(Aqueous solution) Meek cough w7'r Figure 2
Claims (4)
含むインク層が順次設けて成る昇華型熱転写記録媒体に
於いて、該接着層が近赤外線吸収物質を含有している事
を特徴とする昇華型熱転写記録媒体。(1) A sublimation thermal transfer recording medium comprising at least an adhesive layer and an ink layer containing a sublimable dye sequentially provided on one side of a substrate, characterized in that the adhesive layer contains a near-infrared absorbing substance. A sublimation type thermal transfer recording medium.
域に吸収極大をもつ有機物である事を特徴とする請求項
１記載の昇華型熱転写記録媒体。(2) The sublimation thermal transfer recording medium according to claim 1, wherein the near-infrared absorbing substance is an organic substance having an absorption maximum in a region of 750 to 890 nm.
ｔ％、好ましくは０．５〜５ｗｔ％含まれている事を特
徴とする請求の項１項記載の昇華型熱転写記録媒体。(3) The near-infrared absorbing material is 0.1 to 10 W on the adhesive layer.
The sublimation type thermal transfer recording medium according to claim 1, characterized in that it contains t%, preferably 0.5 to 5wt%.
８９０ｎｍに発光ピークを持つ半導体レーザを用いて光
照射を行い、昇華性染料を熱転写させる事を特徴とする
熱転写記録方法。(4) The sublimation type thermal transfer recording medium according to claim 1 has a
A thermal transfer recording method characterized in that a semiconductor laser having an emission peak at 890 nm is used to irradiate light to thermally transfer a sublimable dye.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63329170A JPH02175291A (en) | 1988-12-28 | 1988-12-28 | Sublimable heat transfer recording medium and heat transfer recording method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63329170A JPH02175291A (en) | 1988-12-28 | 1988-12-28 | Sublimable heat transfer recording medium and heat transfer recording method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02175291A true JPH02175291A (en) | 1990-07-06 |
Family
ID=18218428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63329170A Pending JPH02175291A (en) | 1988-12-28 | 1988-12-28 | Sublimable heat transfer recording medium and heat transfer recording method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02175291A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5328885A (en) * | 1991-10-31 | 1994-07-12 | Toppan Printing Co., Ltd. | Transfer recording medium |
| 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 |
| EP0940268A1 (en) * | 1998-03-04 | 1999-09-08 | Sagem Sa | Printing ribbon for thermal transfer of coloured printing ink |
| 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 |
| JP2001207142A (en) * | 2000-01-25 | 2001-07-31 | Tomoegawa Paper Co Ltd | Infrared-absorbing adhesive composition and infrared- absorbing sheet using the same |
| DE10152073A1 (en) * | 2001-10-25 | 2003-05-08 | Tesa Ag | Laser transfer film for permanent marking of components |
-
1988
- 1988-12-28 JP JP63329170A patent/JPH02175291A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5328885A (en) * | 1991-10-31 | 1994-07-12 | Toppan Printing Co., Ltd. | Transfer recording medium |
| 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 |
| EP0940268A1 (en) * | 1998-03-04 | 1999-09-08 | Sagem Sa | Printing ribbon for thermal transfer of coloured printing ink |
| FR2775631A1 (en) * | 1998-03-04 | 1999-09-10 | Sagem | COLOR INK THERMAL TRANSFER PRINTING TAPE FOR PRINTER |
| JP2001207142A (en) * | 2000-01-25 | 2001-07-31 | Tomoegawa Paper Co Ltd | Infrared-absorbing adhesive composition and infrared- absorbing sheet using the same |
| DE10152073A1 (en) * | 2001-10-25 | 2003-05-08 | Tesa Ag | Laser transfer film for permanent marking of components |
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