JPH08108621A - Image recording medium and image forming method using the medium - Google Patents

Image recording medium and image forming method using the medium

Info

Publication number
JPH08108621A
JPH08108621A JP6243054A JP24305494A JPH08108621A JP H08108621 A JPH08108621 A JP H08108621A JP 6243054 A JP6243054 A JP 6243054A JP 24305494 A JP24305494 A JP 24305494A JP H08108621 A JPH08108621 A JP H08108621A
Authority
JP
Japan
Prior art keywords
recording medium
image
heat
image recording
polymerizable
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
Application number
JP6243054A
Other languages
Japanese (ja)
Inventor
Atsushi Nakajima
厚志 仲島
Takaaki Kuroki
孝彰 黒木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP6243054A priority Critical patent/JPH08108621A/en
Publication of JPH08108621A publication Critical patent/JPH08108621A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41CPROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00Forme preparation
    • B41C1/10Forme preparation for lithographic printing; Master sheets for transferring a lithographic image to the forme

Abstract

PURPOSE: To obtain a highly detailed digital image with high sensitivity by a simple developing method using a recording medium using a polymerizable resin. CONSTITUTION: An image recording medium is obtained by providing a thermally polymerizable recording layer containing a photothermal conversion substance, a thermally polymerizable resin and a thermal polymerization initiator on a support and further providing a water-soluble protective layer and a sheet for transferring an undeveloped part on the thermally polymerizable recording layer in succession. At the time of the formation of an image, the image recording medium is imagewise irradiated with light and developed by a method selected from transfer, peeling and the immersion in a developing soln.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は画像記録媒体及びそれを
用いる画像形成方法に関し、詳しくは高精細のデジタル
記録に好適で、高感度で保存性に優れた画像記録媒体及
びそれを用いる画像形成保存性に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image recording medium and an image forming method using the same, and more particularly to an image recording medium suitable for high definition digital recording, having high sensitivity and excellent storage stability, and image forming using the same. Regarding storability.

【0002】[0002]

【従来の技術】従来、高精細な画像記録方法としては、
銀塩方式、電子写真方式やフォトポリマー方式等が用い
られてきた。更に近年は変調可能なレーザーによるデジ
タル記録が上記記録方式に応用されており、それぞれ具
体的には、新聞ファクシミリやCT等の銀塩感光材料へ
のレーザー出力、電子写真方式のレーザープリンタ、フ
ォトポリマー方式ではアルゴンレーザーを用いてPS版
に直接画像記録を行う所謂CTP、光熱変換物質と光架
橋性物質を含有する感光感熱層にレーザー記録して転写
現像する方式等が挙げられる。一方、環境への配慮から
現像工程において液体を使用しないで高精細な画像を得
る方法が望まれている。
2. Description of the Related Art Conventionally, as a high-definition image recording method,
A silver salt system, an electrophotographic system, a photopolymer system and the like have been used. Furthermore, in recent years, digital recording using a tunable laser has been applied to the above-mentioned recording methods. Specifically, laser output to silver salt photosensitive materials such as newspaper facsimiles and CTs, electrophotographic laser printers, photopolymers, etc. Examples of the method include so-called CTP in which an image is directly recorded on a PS plate using an argon laser, and a method in which laser recording is performed on a light and heat sensitive layer containing a photothermal conversion substance and a photocrosslinking substance and transfer development is performed. On the other hand, there is a demand for a method of obtaining a high-definition image without using a liquid in the developing process in consideration of the environment.

【0003】[0003]

【発明が解決しようとする課題】上記のうち、フォトポ
リマーを用いたレーザーによるデジタル記録方式である
CTPにおいては、液体現像が必要で、光ラジカル発生
剤が本質的に高感度なものほど保存により失活しやすい
ことから感度と保存性の両立が難しいという問題があ
る。
Among the above, in CTP, which is a digital recording system using a laser using a photopolymer, liquid development is required, and the more sensitive the photoradical generator is, the more it is stored. Since it is easily deactivated, there is a problem that it is difficult to achieve both sensitivity and storage stability.

【0004】従って本発明の目的は、重合性樹脂を用い
た記録媒体を用いて簡便な現像方法により高精細なデジ
タル画像を高感度で得ることのできる画像形成方法、及
び簡便な現像方法により高精細なデジタル画像を高感度
で得ることができ、且つ保存性に優れた画像記録媒体を
提供することにある。
Therefore, an object of the present invention is to provide an image forming method capable of obtaining a high-definition digital image with high sensitivity by a simple developing method using a recording medium using a polymerizable resin, and a simple developing method. An object of the present invention is to provide an image recording medium capable of obtaining a fine digital image with high sensitivity and having excellent storage stability.

【0005】[0005]

【課題を解決するための手段】本発明の上記目的は、光
熱変換物質、熱重合性樹脂及び熱重合開始剤を含有する
熱重合性記録層を支持体上に有する画像記録媒体、熱重
合性記録層上に水溶性の保護層を有すること、未露光部
を転写するためのシートを熱重合性記録層上に有するこ
と、熱重合性記録層が酸発生剤を含有すること、及び、
これらの画像記録媒体に像様に光を照射した後、転写、
剥離及び現像液への浸漬から選ばれる方法により現像す
る画像形成方法、により達成される。
The above object of the present invention is to provide an image recording medium having a heat-polymerizable recording layer containing a photothermal conversion substance, a heat-polymerizable resin and a heat-polymerization initiator on a support. Having a water-soluble protective layer on the recording layer, having a sheet for transferring the unexposed portion on the heat-polymerizable recording layer, the heat-polymerizable recording layer contains an acid generator, and,
After imagewise irradiating these image recording media, transfer,
An image forming method in which development is performed by a method selected from peeling and immersion in a developing solution.

【0006】即ち、本発明者は、レーザーを用いる記録
層を熱重合系としてやれば、重合開始剤の活性化エネル
ギーを選定することにより保存性を任意に設定でき、レ
ーザー照射時の記録層の到達温度を高めることにより高
感度化が可能であると考え、光熱変換物質と熱重合性樹
脂と熱重合開始剤を基本構成とする記録層により本発明
に至ったものである。
That is, if the recording layer using a laser is a thermal polymerization system, the present inventor can arbitrarily set the storage stability by selecting the activation energy of the polymerization initiator. It is believed that higher sensitivity can be achieved by increasing the ultimate temperature, and the present invention has been achieved by a recording layer having a photothermal conversion substance, a heat-polymerizable resin, and a heat-polymerization initiator as basic components.

【0007】本発明の画像記録媒体は少なくとも支持体
と熱重合性記録層とからなるが、更に接着層及び/又は
剥離層を支持体と該記録層との間に有してもよいし、該
記録層上に水溶性のオーバーコート層を有してもよい。
以下、項目毎に解説する。
The image recording medium of the present invention comprises at least a support and a thermopolymerizable recording layer, and may further have an adhesive layer and / or a release layer between the support and the recording layer, A water-soluble overcoat layer may be provided on the recording layer.
Each item is explained below.

【0008】《支持体》本発明の画像記録媒体に用いる
支持体としては、特に制限はなく、使用目的に応じて種
々の材質、層構成及びサイズを適宜選定すればよい。具
体的には、紙、コート紙、合成紙(ポリプロピレン、ポ
リスチレン若しくはそれらを紙と貼り合わせた複合材
料)等の各種紙類、塩化ビニル系樹脂シート、ABS樹
脂シート、ポリエチレンテレフタレートフィルム、ポリ
ブチレンテレフタレートフィルム、ポリエチレンナフタ
レートフィルム等の樹脂シート、各種の金属で形成され
たフィルム乃至シート等が挙げられる。
<Support> The support used in the image recording medium of the present invention is not particularly limited, and various materials, layer constitutions and sizes may be appropriately selected according to the purpose of use. Specifically, various papers such as paper, coated paper, synthetic paper (polypropylene, polystyrene or a composite material obtained by laminating them with paper), vinyl chloride resin sheet, ABS resin sheet, polyethylene terephthalate film, polybutylene terephthalate Examples thereof include films, resin sheets such as polyethylene naphthalate film, and films or sheets formed of various metals.

【0009】支持体の厚さは20〜1000μm程度、好まし
くは20〜800μmであり、このような範囲から適宜選定す
る。又、通常、帯電防止処理、マット処理、易接着処理
等の加工を施したものを用いる。
The support has a thickness of about 20 to 1000 μm, preferably 20 to 800 μm, and is appropriately selected from such a range. In addition, usually, those subjected to processing such as antistatic treatment, matte treatment, and easy adhesion treatment are used.

【0010】《熱重合性記録層》記録層が含有する光熱
変換物質は、光源によって異なり、光を吸収し効率良く
熱に変換するものが好ましく、例えば半導体レーザーを
光源として使用する場合は特開昭63-123454号、特開平3
-146565号に記載の化合物、カーボンブラック、グラフ
ァイト等近赤外領域に吸収を持つものが好ましい。又、
各種シアニン色素を初めとして、アントラキノン系、イ
ンドアニリン金属錯体系、アズレニウム系、クロコニウ
ム系、スクアリウム系、ジチオール金属錯体系、キレー
ト系、ナフタロシアニン金属錯体系の各色素等を用いる
ことができる。
<Thermopolymerizable Recording Layer> The photothermal conversion substance contained in the recording layer is different depending on the light source, and it is preferable that it absorbs light and efficiently converts it into heat. For example, when a semiconductor laser is used as a light source, Sho 63-123454, JP 3
Compounds described in JP-A-146565, carbon black, graphite and the like having absorption in the near infrared region are preferable. or,
Various cyanine dyes, anthraquinone dyes, indoaniline metal complex dyes, azurenium dyes, croconium dyes, squarylium dyes, dithiol metal complex dyes, chelate dyes, and naphthalocyanine metal complex dyes can be used.

【0011】熱重合性樹脂のうちの熱重合性モノマーと
しては、公知のエチレン性不飽和結合を有するモノマー
を特に制限なく使用でき、具体的には2-エチルヘキシル
アクリレート、2-ヒドロキシエチルアクリレート、2-ヒ
ドロキシプロピルアクリレート等の単官能アクリル酸エ
ステル及びその誘導体或いはこれらのアクリレートをメ
タクリレート、イタコネート、クロトネート、マレエー
ト等に代えた化合物、ポリエチレングリコールジアクリ
レート、ペンタエリスリトールジアクリレート、ビスフ
ェノールAジアクリレート、ヒドロキシピバリン酸ネオ
ペンチルグリコールのε-カプロラクトン付加物のジア
クリレート等の2官能アクリル酸エステル及びその誘導
体或いはこれらのアクリレートをメタクリレート、イタ
コネート、クロトネート、マレエート等に代えた化合
物、或いはトリメチロールプロパントリ(メタ)アクリ
レート、ジペンタエリスリトールペンタアクリレート、
ジペンタエリスリトールヘキサアクリレート、ピロガロ
ールトリアクリレート等の多官能アクリル酸エステル及
びその誘導体或いはこれらのアクリレートをメタクリレ
ート、イタコネート、クロトネート、マレエート等に代
えた化合物等を挙げることができる。
As the heat-polymerizable monomer of the heat-polymerizable resin, a known monomer having an ethylenically unsaturated bond can be used without particular limitation, and specifically, 2-ethylhexyl acrylate, 2-hydroxyethyl acrylate, 2 -Monofunctional acrylic acid esters such as hydroxypropyl acrylate and their derivatives or compounds obtained by replacing these acrylates with methacrylate, itaconate, crotonate, maleate, etc., polyethylene glycol diacrylate, pentaerythritol diacrylate, bisphenol A diacrylate, hydroxypivalic acid Bifunctional acrylic acid ester such as diacrylate of neopentyl glycol ε-caprolactone adduct and its derivative or acrylate of these, methacrylate, itaconate, crotony , Compounds instead of maleate and the like, or trimethylolpropane tri (meth) acrylate, dipentaerythritol pentaacrylate,
Examples thereof include polyfunctional acrylic acid esters such as dipentaerythritol hexaacrylate and pyrogallol triacrylate and their derivatives, or compounds in which these acrylates are replaced with methacrylates, itaconates, crotonates, maleates and the like.

【0012】又、適当な分子量のオリゴマーにアクリル
酸、又はメタアクリル酸を導入し、光重合性を付与し
た、所謂プレポリマーも好適に使用できる。
Further, a so-called prepolymer obtained by introducing photopolymerizability by introducing acrylic acid or methacrylic acid into an oligomer having an appropriate molecular weight can also be preferably used.

【0013】この他に特開昭58-212994号、同61-6649
号、同62-46688号、同62-48589号、同62-173295号、同6
2-187092号、同63-67189号、特開平1-244891号等の各公
報に記載の化合物等を挙げることができ、更に「11290
の化学商品」化学工業日報社、第286〜294頁に記載の化
合物、「UV・EB硬化ハンドブック(原料編)」高分
子刊行会、第11〜65頁に記載の化合物等も本発明におい
ては好適に用いることができる。
In addition to these, Japanese Patent Laid-Open Nos. 58-212994 and 61-6649
No. 62, No. 62-46688, No. 62-48589, No. 62-173295, No. 6
2-187092, 63-67189, compounds such as those described in JP-A 1-244891 and the like, and the like "11290
In the present invention, the compounds described in "Chemical products of Kagaku Kogyo Nippo Co., Ltd., pages 286 to 294, the compounds described in" UV / EB curing handbook (raw materials) ", Kobunshi Kogyokai, pages 11 to 65 It can be preferably used.

【0014】これらの中で、分子内に2個以上のアクリ
ル基又はメタクリル基を有する化合物が好ましく、更に
好ましくは分子量が10000以下、より好ましくは5000以
下のものである。
Among these, compounds having two or more acryl groups or methacryl groups in the molecule are preferable, more preferably those having a molecular weight of 10,000 or less, and more preferably 5,000 or less.

【0015】これらのモノマー或いはプレポリマーは単
独で用いても良いし、併用しても良い。
These monomers or prepolymers may be used alone or in combination.

【0016】熱重合性層に用いられる熱重合開始剤とし
ては、一般にラジカル重合による高分子合成反応に用い
られる公知のラジカル重合開始剤を特に制限なく、使用
することができ、2,2'-アゾビスイソブチロニトリル,
2,2'-アゾビスプロピオニトリル等のアゾビスニトリル
系化合物、過酸化ベンゾイル,過酸化ラウロイル,過酸
化アセチル,過安息香酸-t-ブチル,α-クミルヒドロパ
ーオキサイド,ジ-t-ブチルパーオキサイド,ジイソプ
ロピルパーオキシジカーボネート,t-ブチルパーオキシ
イソプロピルカーボネート,過酸類,アルキルパーオキ
シカルバメート類,ニトロソアリールアシルアミン類等
の有機過酸化物、過硫酸カリウム、過硫酸アンモニウ
ム、過塩素酸カリウム等の無機過酸化物、ジアゾアミノ
ベンゼン,p-ニトロベンゼンジアゾニウム,アゾビス置
換アルカン類,ジアゾチオエーテル類,アリールアゾス
ルホン類等のアゾ又はジアゾ系化合物、ニトロソフェニ
ル尿素、テトラメチルチウラムジスルフィド等のテトラ
アルキルチウラムジスルフィド類、ジベンゾイルジスル
フィド等のジアリールジスルフィド類、ジアルキルキサ
ントゲン酸ジスルフィド類、アリールスルフィン酸類、
アリールアルキルスルホン類、1-アルカンスルフィン酸
類等を挙げることができる。
As the thermal polymerization initiator used in the thermopolymerizable layer, known radical polymerization initiators generally used for polymer synthesis reaction by radical polymerization can be used without particular limitation, and 2,2'- Azobisisobutyronitrile,
Azobisnitrile compounds such as 2,2'-azobispropionitrile, benzoyl peroxide, lauroyl peroxide, acetyl peroxide, tert-butyl perbenzoate, α-cumylhydroperoxide, di-t- Organic peroxides such as butyl peroxide, diisopropyl peroxy dicarbonate, t-butyl peroxy isopropyl carbonate, peracids, alkyl peroxy carbamates, nitrosoaryl acylamines, potassium persulfate, ammonium persulfate, potassium perchlorate Inorganic peroxides such as azo or diazo compounds such as diazoaminobenzene, p-nitrobenzenediazonium, azobis-substituted alkanes, diazothioethers, arylazosulfones, etc., Tetraalkyl thiurams such as nitrosophenyl urea, tetramethyl thiuram disulfide, etc. Disulfi S, diaryl disulfides such as dibenzoyl disulfide, dialkyl xanthate disulfides, aryl sulfinic acids,
Arylalkyl sulfones, 1-alkanesulfinic acids and the like can be mentioned.

【0017】本発明の記録方法では、露光照度にもよる
が、露光面の到達温度が600℃以上にもなり、活性化エ
ネルギーの大きい熱重合開始剤でも充分な感度を得るこ
とができる。
In the recording method of the present invention, the temperature reached on the exposed surface becomes 600 ° C. or more, though it depends on the exposure illuminance, and sufficient sensitivity can be obtained even with a thermal polymerization initiator having a large activation energy.

【0018】熱重合開始剤のラジカル発生のための活性
化エネルギーは30Kcal/モル以上であることが好まし
く、そのようなものとしてアゾビスニトリル系化合物、
有機過酸化物が挙げられる。
The activation energy for radical generation of the thermal polymerization initiator is preferably 30 Kcal / mol or more, and as such, an azobisnitrile compound,
Organic peroxides may be mentioned.

【0019】中でも、常温で安定性に優れ、過熱時の分
解速度が速く、分解時に無色となる化合物が好ましく、
過酸化ベンゾイル、2,2'-アゾビスイソブチロニトリル
等を挙げることができる。
Of these, compounds that are excellent in stability at room temperature, have a high decomposition rate when overheated, and become colorless upon decomposition are preferred.
Examples thereof include benzoyl peroxide and 2,2′-azobisisobutyronitrile.

【0020】これらの熱重合開始剤は単独で用いても2
種以上併用しても良く、感光性組成分の全固形分に対し
0.5〜30重量%程度、好ましくは2〜10重量%で用い
る。
Even if these thermal polymerization initiators are used alone, 2
You may use together more than one kind, and
It is used in an amount of about 0.5 to 30% by weight, preferably 2 to 10% by weight.

【0021】熱重合性層には必要に応じて熱可塑性樹脂
からなるバインダーを用いても良く、ポリエステル系樹
脂、ポリビニルアセタール系樹脂、ポリウレタン系樹
脂、ポリアミド系樹脂、セルロース系樹脂、オレフィン
系樹脂、塩化ビニル系樹脂、(メタ)アクリル系樹脂、
スチレン系樹脂、ポリカーボネート、ポリビニルアルコ
ール、ポリビニルピロリドン、ポリサルホン、ポリカプ
ロラクトン樹脂、ポリアクリロニトリル樹脂、尿素樹
脂、エポキシ樹脂、フェノキシ樹脂、ゴム系樹脂等から
選ばれるものを単独又は併用で用いることができる。
又、樹脂内に不飽和結合を有する樹脂、例えばジアリル
フタレート樹脂及びその誘導体、塩素化ポリプロピレン
等は前述のエチレン性不飽和結合を有する化合物と重合
させることが可能なため用途に応じて好適に用いること
ができる。
If necessary, a binder made of a thermoplastic resin may be used in the thermopolymerizable layer, and a polyester resin, a polyvinyl acetal resin, a polyurethane resin, a polyamide resin, a cellulose resin, an olefin resin, Vinyl chloride resin, (meth) acrylic resin,
Styrene resins, polycarbonate, polyvinyl alcohol, polyvinylpyrrolidone, polysulfones, polycaprolactone resins, polyacrylonitrile resins, urea resins, epoxy resins, phenoxy resins, rubber resins and the like can be used alone or in combination.
Further, a resin having an unsaturated bond in the resin, for example, a diallyl phthalate resin and its derivative, chlorinated polypropylene and the like can be polymerized with the above-mentioned compound having an ethylenically unsaturated bond, and therefore, it is preferably used depending on the application. be able to.

【0022】これらのバインダー樹脂は、エチレン性不
飽和結合を有する熱重合性化合物100重量部に対して、5
00重量部以下、好ましくは200重量部以下で添加混合し
て用いる。
These binder resins are used in an amount of 5 parts by weight per 100 parts by weight of the thermopolymerizable compound having an ethylenically unsaturated bond.
00 parts by weight or less, preferably 200 parts by weight or less are used by adding and mixing.

【0023】更に熱重合性層には、従来公知の光重合転
写現像系で用いられる各種添加剤を適宜添加し使用でき
る。
Further, various additives used in the conventionally known photopolymerization transfer development system can be appropriately added to the heat-polymerizable layer.

【0024】熱重合抑制剤として、ハイドロキノン、ピ
ロガロール、p-メトキシフェノール、カテコール、β-
ナフトール、2,6-ジ-t-ブチル-p-クレゾール等のキノン
系、フェノール系化合物が好ましく用いられ、エチレン
性不飽和結合を有する重合性化合物とバインダー樹脂と
の合計100重量部に対して、10重量部以下で、好ましく
は0.01〜5重量部程度で用いる。
As a thermal polymerization inhibitor, hydroquinone, pyrogallol, p-methoxyphenol, catechol, β-
Naphthol, quinone-based compounds such as 2,6-di-t-butyl-p-cresol, and phenol-based compounds are preferably used, with respect to a total of 100 parts by weight of a polymerizable compound having an ethylenically unsaturated bond and a binder resin. 10 parts by weight or less, preferably 0.01 to 5 parts by weight.

【0025】酸素クエンチャーとして、米国特許第4772
541号の第11カラム58行目〜第12カラム35行目に記載の
化合物等のN,N-ジアルキルアニリン誘導体が好ましく用
いられる。
As an oxygen quencher, US Pat. No. 4772
N, N-dialkylaniline derivatives such as the compounds described in No. 541, column 11, line 58 to column 12, line 35 are preferably used.

【0026】可塑剤として、フタル酸エステル類、トリ
メリット酸エステル類、アジピン酸エステル類、その他
飽和或いは不飽和カルボン酸エステル類、クエン酸エス
テル類、エポキシ化大豆油、エポキシ化亜麻仁油、ステ
アリン酸エポキシ類、正リン酸エステル類、亜燐酸エス
テル類、グリコールエステル類等が挙げられる。
As a plasticizer, phthalic acid esters, trimellitic acid esters, adipic acid esters, other saturated or unsaturated carboxylic acid esters, citric acid esters, epoxidized soybean oil, epoxidized linseed oil, stearic acid Examples thereof include epoxies, orthophosphoric acid esters, phosphite esters, glycol esters and the like.

【0027】加熱により酸を発生し開始剤の分解を促進
する酸発生剤を用いるのが好ましく、ジフェニルヨード
ニウム塩、1,3,5-トリアリルスルホニウム塩、トリアジ
ン類等が挙げられる。
It is preferable to use an acid generator which generates an acid by heating to accelerate the decomposition of the initiator, and examples thereof include diphenyliodonium salt, 1,3,5-triallylsulfonium salt and triazines.

【0028】上述の各成分を適宜選択して、熱重合性記
録層が構成されるが、その厚さは0.5〜3μm程度が好ま
しい。光熱変換物質は記録波長における透過濃度が0.5
〜3の範囲になるように添加する。又、光熱変換物質、
熱重合性化合物及び熱重合開始剤等は、感度を向上させ
ることを目的として、マイクロカプセル内に局在化させ
ても良い。この場合、熱重合系は露光により局所的に加
熱されるため、更に高感度が可能となる。マイクロカプ
セルとしては熱応答性(露光時の加熱により内包物が放
出されるもの)を有することが好ましく、このようなマ
イクロカプセルを形成する方法については特開平1-1451
90号に詳しく記載されている。
The thermopolymerizable recording layer is formed by appropriately selecting the above-mentioned components, and the thickness thereof is preferably about 0.5 to 3 μm. The photothermal conversion material has a transmission density of 0.5 at the recording wavelength.
Add to be in the range of ~ 3. Also, a light-heat conversion substance,
The heat-polymerizable compound, the heat-polymerization initiator and the like may be localized in the microcapsule for the purpose of improving sensitivity. In this case, since the thermal polymerization system is locally heated by exposure, higher sensitivity is possible. It is preferable that the microcapsules have thermoresponsiveness (the ones whose inclusions are released by heating during exposure). For the method of forming such microcapsules, see JP-A-1-451
It is described in detail in No. 90.

【0029】《その他の層》酸素による重合阻害を防止
するために、オーバーコート層を設けてもよい。オーバ
ーコート層の素材としては、ポリビニルアルコール、カ
ルボキシメチルセルロース、ヒドロキシエチルセルロー
ス、メチルセルロース、ポリビニルピロリドン等の水溶
性樹脂が好ましく、膜厚は0.2〜3μm程度が適当であ
る。
<< Other Layers >> An overcoat layer may be provided to prevent polymerization inhibition by oxygen. As a material for the overcoat layer, a water-soluble resin such as polyvinyl alcohol, carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose, or polyvinylpyrrolidone is preferable, and a film thickness of about 0.2 to 3 μm is suitable.

【0030】又、転写現像を補助するために支持体との
間に剥離層を設けてもよい。剥離層の素材としては、上
記水溶性樹脂やポリビニルブチラール、ポリエチレン、
ワックス類等を採用できる。
Further, a release layer may be provided between the support and the support to assist the transfer development. As the material of the release layer, the above water-soluble resin, polyvinyl butyral, polyethylene,
Waxes can be used.

【0031】転写現像を行う場合には、被転写体との密
着性を確保するためにクッション層を設けることが好ま
しい。クッション層としては、熱により軟化するか、転
写時に弾性体であることが好ましく、具体的には軟化点
が80℃以下のエチレン-酢酸ビニル共重合体(EV
A)、エチレン-アクリル酸エチル共重合体(EE
A)、ポリエステル、スチレン-ブチレン樹脂(SB
R)、スチレン-イソプレン-スチレン樹脂(SIS)、
スチレン-エチレン-ブチレン-スチレン樹脂(SEB
S)、ワックス等のポリオレフィン系樹脂が好ましい。
又、軟化性の樹脂を発泡構造にしたものも採用できる。
発泡性の層を形成するものとしては、例えば日清紡(株)
が市販しているピーチコートが挙げられる。
When transfer development is carried out, it is preferable to provide a cushion layer in order to secure the close contact with the transferred material. The cushion layer is preferably softened by heat or is an elastic body at the time of transfer. Specifically, the cushion layer is an ethylene-vinyl acetate copolymer (EV having a softening point of 80 ° C. or lower).
A), ethylene-ethyl acrylate copolymer (EE
A), polyester, styrene-butylene resin (SB
R), styrene-isoprene-styrene resin (SIS),
Styrene-ethylene-butylene-styrene resin (SEB
Polyolefin resins such as S) and wax are preferable.
Further, a flexible resin having a foamed structure can also be used.
The foamable layer is formed, for example, by Nisshinbo Co., Ltd.
Commercially available peach coat.

【0032】剥離現像を行う場合は予め剥離支持体を熱
重合性記録層上に設ける。剥離支持体はフィルムを熱重
合性記録層に貼合するか、塗布して設ける。フィルムの
素材としては、前記支持体と同様の素材を用いることが
できる。塗布して設ける場合は、前記オーバーコート層
に用いる素材が好適である。剥離支持体の厚さは5〜25
μmが好ましい。
When peeling development is carried out, a peeling support is previously provided on the thermopolymerizable recording layer. The release support is provided by laminating a film on the thermopolymerizable recording layer or by coating. As the material of the film, the same material as the support can be used. When applied and provided, the material used for the overcoat layer is suitable. The thickness of the peeling support is 5-25
μm is preferred.

【0033】《記録方法》本発明はレーザーによるデジ
タル記録に有利なものであり、レーザー光源としては、
近赤外領域に発振波長を有するものであれば、一般によ
く知られているYAGレーザー,ガラスレーザー等の固体
レーザー、He−Neレーザー,CO2レーザー,COレーザ
ー,その他の放電励起分子レーザー、エキシマレーザー
等の気体レーザー、化学レーザー、色素レーザー、半導
体レーザー等を使用することができる。中でも、YAGレ
ーザー、He-Neレーザー、半導体レーザーが好ましく、
特に半導体レーザーは、小型で安価であり、その組成に
より発振波長を変化させることができるので、使用する
感光性組成物の感光波長域に合わせて適宜選択すること
も可能であり好ましい。又、YAGレーザーは高出力のも
のを入手できるので感度の面で有利である。
<Recording Method> The present invention is advantageous for digital recording by a laser, and as a laser light source,
As long as it has an oscillation wavelength in the near infrared region, commonly known solid-state lasers such as YAG lasers and glass lasers, He-Ne lasers, CO 2 lasers, CO lasers, other discharge-excited molecular lasers, excimers Gas lasers such as lasers, chemical lasers, dye lasers, semiconductor lasers and the like can be used. Among them, YAG laser, He-Ne laser, and semiconductor laser are preferable,
In particular, the semiconductor laser is small and inexpensive, and the oscillation wavelength can be changed by its composition. Therefore, the semiconductor laser can be appropriately selected according to the photosensitive wavelength range of the photosensitive composition to be used, which is preferable. Further, since a high output YAG laser is available, it is advantageous in terms of sensitivity.

【0034】好ましく用いられる半導体レーザーの組成
とその発振波長域としては、InGaPレーザー(0.65〜1.0
μm)、AlGaAsレーザー(0.7〜1.0μm)、GaAsPレーザー
(0.7〜1.0μm)、InGaAsレーザー(1.0〜3.5μm)、InAsP
レーザー(1.0〜3.5μm)、CdSnP2レーザー(1.01μm)、Ga
Sbレーザー(1.53μm)等が挙げられる。
The composition of the semiconductor laser which is preferably used and its oscillation wavelength range are InGaP laser (0.65 to 1.0
μm), AlGaAs laser (0.7 to 1.0 μm), GaAsP laser
(0.7 to 1.0 μm), InGaAs laser (1.0 to 3.5 μm), InAsP
Laser (1.0-3.5 μm), CdSnP 2 laser (1.01 μm), Ga
Examples include Sb laser (1.53 μm).

【0035】記録面における露光照度は露光感度を得る
という点から0.1メガワット/cm2以上であることが好ま
しい。高照度短時間露光とするほど熱拡散の影響を受け
にくく、最高到達温度が高くなるので高感度である。
The exposure illuminance on the recording surface is preferably 0.1 megawatt / cm 2 or more from the viewpoint of obtaining exposure sensitivity. The higher the illuminance and the shorter the exposure time, the less the influence of thermal diffusion and the higher the maximum temperature reached, resulting in high sensitivity.

【0036】又、熱重合を促進するため、記録時にプレ
ヒートすることが好ましい。プレヒートの温度は実質的
に熱重合が起こらない程度であれば特に制限はないが、
好ましくは熱重合性層の主たるバインダー樹脂のガラス
転移点以上の温度に加熱する。
In order to accelerate thermal polymerization, it is preferable to preheat during recording. The preheating temperature is not particularly limited as long as thermal polymerization does not substantially occur,
It is preferably heated to a temperature not lower than the glass transition point of the main binder resin of the thermopolymerizable layer.

【0037】《現像方法》本発明においては、簡便な転
写現像や剥離現像で高精細な画像を得ることができる
が、液体現像ももちろん可能である。
<< Developing Method >> In the present invention, a high-definition image can be obtained by simple transfer development and peeling development, but of course liquid development is also possible.

【0038】転写現像においては、未露光部が他のシー
トへ熱転写される。熱転写は熱重合性記録層面側を別の
シートと対面させてラミネーター等により加熱及び加圧
して行う。転写現像においては、未露光部までも熱重合
することによるSN比の低下を避けるため、一定以上の
熱量を与えない様に配慮する必要がある。好ましい熱転
写条件は、60℃以上、200℃以下、加熱時間0.01〜10秒
である。尚、クッション層は低温による転写現像を助け
る働きがある。よってクッション層を有する時は、その
軟化点以上の温度で加熱することが好ましい。又、未重
合部分は軟化点以上で且つ重合部分の軟化点以下で加熱
することが好ましいのは言うまでもない。
In the transfer development, the unexposed area is thermally transferred to another sheet. The thermal transfer is performed by facing the surface of the thermopolymerizable recording layer to another sheet and heating and pressing with a laminator or the like. In the transfer development, in order to avoid a decrease in the SN ratio due to thermal polymerization even in the unexposed portion, it is necessary to give consideration so that a certain amount of heat is not applied. Preferred thermal transfer conditions are 60 ° C. or higher and 200 ° C. or lower, and heating time is 0.01 to 10 seconds. The cushion layer has a function of assisting the transfer development at a low temperature. Therefore, when the cushion layer is provided, it is preferable to heat the cushion layer at a temperature equal to or higher than the softening point. Needless to say, it is preferable to heat the unpolymerized portion above the softening point and below the softening point of the polymerized portion.

【0039】転写画像を形成するシートとしては、未露
光部転写画像を最終画像として用いる場合、前記支持体
と同様の素材で寸法安定性の良いものとする。記録媒体
に残る露光部を最終画像として用いる場合、転写シート
はコストを考え、厚さ25μm未満のフィルムを用いるの
が良い。どちらの場合も転写性を向上するため転写シー
トに易接着処理を施しても良い。
As a sheet for forming a transfer image, when an unexposed portion transfer image is used as a final image, it is made of the same material as the support and has good dimensional stability. When the exposed portion remaining on the recording medium is used as the final image, it is preferable to use a film having a thickness of less than 25 μm as the transfer sheet in consideration of cost. In either case, the transfer sheet may be subjected to an easy-adhesion treatment in order to improve transferability.

【0040】剥離現像する場合、予め画像記録媒体に剥
離支持体を積層しておいて、露光現像後該支持体を剥離
することにより露光部を剥離支持体上に付着せしめる。
同様に剥離支持体に易接着処理を施しても良い。剥離
角、剥離速度、環境温度等の剥離条件は材料に応じて適
宜設定する。
In the case of peeling development, a peeling support is preliminarily laminated on the image recording medium, and after exposure and development, the support is peeled off so that the exposed portion is attached to the peeling support.
Similarly, the peeling support may be subjected to easy adhesion treatment. Peeling conditions such as peeling angle, peeling speed, and environmental temperature are appropriately set according to the material.

【0041】尚、上記いずれの現像においても最終画像
を未露光部にて形成する場合、後加熱処理を行って熱重
合せしめることにより画像を安定させることができる。
In any of the above-mentioned developments, when the final image is formed in the unexposed area, the image can be stabilized by performing a post-heating treatment for thermal polymerization.

【0042】液体現像する場合、未露光部が現像により
溶出される。現像液としては、珪酸ナトリウム、珪酸カ
リウム、珪酸アンモニウム、第2燐酸ナトリウム、第2
燐酸カリウム、第2燐酸アンモニウム、重炭酸ナトリウ
ム、重炭酸カリウム、重炭酸アンモニウム、炭酸ナトリ
ウム、炭酸カリウム、炭酸アンモニウム、炭酸水素ナト
リウム、炭酸水素カリウム、炭酸水素アンモニウム、硼
酸ナトリウム、硼酸カリウム、硼酸アンモニウム、水酸
化ナトリウム、水酸化カリウム、水酸化アンモニウム及
び水酸化リチウム等の無機アルカリ剤、又はモノメチル
アミン、ジメチルアミン、トリメチルアミン、モノエチ
ルアミン、ジエチルアミン、トリエチルアミン、モノイ
ソプロピルアミン、ジイソプロピルアミン、トリイソプ
ロピルアミン、n-ブチルアミン、モノエタノールアミ
ン、ジエタノールアミン、トリエタノールアミン、モノ
イソプロパノールアミン、ジイソプロパノールアミン、
エチレンイミン、エチレンジアミン、ピリジン等の有機
アルカリ剤から選ばれる少なくとも1種のアルカリ剤の
水溶液が使用できる。
In the case of liquid development, the unexposed area is eluted by the development. As the developing solution, sodium silicate, potassium silicate, ammonium silicate, sodium diphosphate, secondary sodium
Potassium phosphate, dibasic ammonium phosphate, sodium bicarbonate, potassium bicarbonate, ammonium bicarbonate, sodium carbonate, potassium carbonate, ammonium carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate, ammonium hydrogen carbonate, sodium borate, potassium borate, ammonium borate, Inorganic alkali agents such as sodium hydroxide, potassium hydroxide, ammonium hydroxide and lithium hydroxide, or monomethylamine, dimethylamine, trimethylamine, monoethylamine, diethylamine, triethylamine, monoisopropylamine, diisopropylamine, triisopropylamine, n- Butylamine, monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine,
An aqueous solution of at least one alkaline agent selected from organic alkaline agents such as ethyleneimine, ethylenediamine and pyridine can be used.

【0043】現像液中には、必要に応じて、アニオン性
界面活性剤、両性界面活性剤及びアルコール等の有機溶
媒を添加してもよい。
If necessary, an anionic surfactant, an amphoteric surfactant and an organic solvent such as alcohol may be added to the developer.

【0044】[0044]

【実施例】以下、実施例を挙げて本発明を詳細に説明す
るが、本発明の態様はこれに限定されない。
The present invention will be described in detail below with reference to examples, but the embodiments of the present invention are not limited thereto.

【0045】実施例1 帯電防止処理を施された厚さ100μmの透明ポリエチレン
テレフタレート(PET)フィルム上に、酢酸ビニル
(VA)の比率が40モル%であるエチレン-酢酸ビニル
共重合体(EVA〜Vicat試験による軟化点=40℃)か
らなる5μmのクッション層と、メチルセルロースから
なる0.5μmの剥離層を順次塗布にて形成し、その上に以
下の熱重合性記録層用組成物を乾燥時の膜厚が1μmに
なるように塗布し、80℃を越えない程度の温風で乾燥し
た。
Example 1 On a transparent polyethylene terephthalate (PET) film having a thickness of 100 μm and subjected to an antistatic treatment, an ethylene-vinyl acetate copolymer (EVA ~) having a vinyl acetate (VA) ratio of 40 mol%. A cushion layer of 5 μm having a softening point of 40 ° C. according to the Vicat test) and a release layer of 0.5 μm made of methyl cellulose were sequentially formed by coating, and the following composition for heat-polymerizable recording layer was dried. The coating was applied so that the film thickness would be 1 μm, and dried with warm air not exceeding 80 ° C.

【0046】 熱可塑性樹脂 アクリル樹脂 0.75g 〔三菱レーヨン(株)製;BR−83〕 光熱変換物質 カーボンブラック分散物 1.21g (カーボン含有率33重量%) 熱重合性化合物 ジペンタエリスリトールヘキサアクリレート 0.74g (DPHA)〔日本化薬(株)製〕 熱重合開始剤 ベンゾイルパーオキサイド 0.1g 溶媒 メチルエチルケトン 7.19g 熱重合性記録層の波長830nmにおける透過濃度は0.8であ
った。
Thermoplastic resin Acrylic resin 0.75 g [Mitsubishi Rayon Co., Ltd .; BR-83] Photothermal conversion substance Carbon black dispersion 1.21 g (carbon content 33% by weight) Thermopolymerizable compound dipentaerythritol hexaacrylate 0.74 g (DPHA) [manufactured by Nippon Kayaku Co., Ltd.] Thermal polymerization initiator benzoyl peroxide 0.1 g Solvent methyl ethyl ketone 7.19 g The transmission density of the thermopolymerizable recording layer at a wavelength of 830 nm was 0.8.

【0047】得られた記録媒体に以下の条件で露光し、
画像記録した。
The obtained recording medium is exposed under the following conditions,
Image recorded.

【0048】 光源 :発振波長830nmの半導体レーザー 露光スポット径:6μm 露光強度 :0.069〜0.198メガワット/cm2 露光エネルギー:200〜550mJ/cm2(露光スポットより
外の部分も含む) 次に市販のアート紙〔三菱製紙(株)製;三菱特両アー
ト〕と熱重合記録層を対面させて、110℃,30cm/min,
0.5Kg/cm2の条件でラミネートを行い、室温まで冷却し
た後、記録媒体を曲げるようにして支持体を紙から剥離
したところ、1000〜2000DPI程度の解像度の画像が得
られた。
Light source: Semiconductor laser with oscillation wavelength of 830 nm Exposure spot diameter: 6 μm Exposure intensity: 0.069 to 0.198 megawatts / cm 2 Exposure energy: 200 to 550 mJ / cm 2 (including parts outside the exposure spot) Next commercially available art Face the thermopolymerization recording layer with paper [manufactured by Mitsubishi Paper Mills Ltd .; Mitsubishi Toku Ryo Art] at 110 ° C, 30 cm / min,
After laminating under the condition of 0.5 kg / cm 2 and cooling to room temperature, the support was peeled off from the paper by bending the recording medium, and an image with a resolution of about 1000 to 2000 DPI was obtained.

【0049】明瞭な画像が得られる感度(露光エネルギ
ー)は露光強度に大きく依存し、露光強度が大きいほ
ど、見かけの感度が増加した。画像が確認できる感度
は、0.07メガワット/cm2で450mJ/cm2、0.1メガワット
で350mJ/cm2、0.14メガワット/cm2で300mJ/cm2、0.2
メガワット/cm2で250mJ/cm2であった。
The sensitivity (exposure energy) with which a clear image can be obtained largely depends on the exposure intensity, and the higher the exposure intensity, the higher the apparent sensitivity. Sensitivity 0.07 megawatts / cm 2 in 450 mJ / cm 2, 350 mJ / cm 2 at 0.1 megawatts, 300 mJ / cm 2 at 0.14 megawatts / cm 2 in which the image can be confirmed, 0.2
It was 250 mJ / cm 2 at megawatt / cm 2 .

【0050】実施例2 記録媒体の重合開始剤をベンゾイルパーオキサイド(活
性化エネルギーが31.1Kcal/モル)に代えてジクミルパ
ーオキサイド(活性化エネルギーが約40.6Kcal/モル)
とした以外は実施例1と同様にして、記録媒体を作成し
転写現像を行ったところ、露光強度が0.069〜0.198メガ
ワット/cm2の範囲では殆ど感度に差が見られなかっ
た。
Example 2 Dicumyl peroxide (activation energy of about 40.6 Kcal / mol) was used in place of benzoyl peroxide (activation energy of 31.1 Kcal / mol) as the polymerization initiator of the recording medium.
A recording medium was prepared and transfer development was carried out in the same manner as in Example 1 except for the above, and when the exposure intensity was in the range of 0.069 to 0.198 megawatt / cm 2 , there was almost no difference in sensitivity.

【0051】更に、実施例1の記録媒体と実施例2の記
録媒体を55℃、20%RHの条件で1週間保存して両者の感
度を比較したところ、ジクミルパーオキサイドを含有す
る実施例2の記録媒体の方が感度の劣化が小さかった。
Further, the recording medium of Example 1 and the recording medium of Example 2 were stored under the conditions of 55 ° C. and 20% RH for 1 week, and their sensitivities were compared. As a result, an example containing dicumyl peroxide was found. The recording medium of No. 2 showed less deterioration in sensitivity.

【0052】実施例3 酸発生剤〔住友化学(株)製;架橋促進剤ACX−P、有
効成分35%〕を0.1g熱重合性記録層用組成物に添加し
た以外は実施例1と同様にして、記録媒体を作成し転写
現像を行ったところ、露光強度が0.2メガワット/cm2
画像視認可能感度が200mJ/cm2にまで増加した。
Example 3 Same as Example 1 except that 0.1 g of an acid generator (manufactured by Sumitomo Chemical Co., Ltd .; crosslinking accelerator ACX-P, active ingredient 35%) was added to the composition for a thermopolymerizable recording layer. When a recording medium was prepared and subjected to transfer development, the image visible sensitivity increased to 200 mJ / cm 2 at an exposure intensity of 0.2 MW / cm 2 .

【0053】実施例4 平版印刷版用の砂目立て処理を施したアルミニウム支持
体上に、以下の熱重合性記録層用組成物を塗布・乾燥し
て膜厚2μmの熱重合性記録層を形成した。更にその上
にポリビニルアルコール〔日本合成化学(株)製;EG−
30〕水溶液を膜厚1μmのオーバーコート層になるよう
に塗布・乾燥して画像記録媒体を得た。
Example 4 A heat-polymerizable recording layer having a thickness of 2 μm was formed by coating and drying the following composition for heat-polymerizable recording layer on a grained aluminum support for a lithographic printing plate. did. Furthermore, polyvinyl alcohol [manufactured by Nippon Synthetic Chemical Industry Co .; EG-
30] An aqueous solution was applied and dried so as to form an overcoat layer having a film thickness of 1 μm to obtain an image recording medium.

【0054】 光熱変換物質 カーボンブラック分散物 1.21g (カーボン含有率33重量%) 熱重合性化合物 ジペンタエリスリトールヘキサアクリレート 0.74g (DPHA)〔日本化薬(株)製〕 アルカリ可溶性熱可塑性樹脂 メチルメタクリレート(MMA)-メタクリル酸(MAA)共 重合体(モル比8:2、MW=25000) 0.75g 熱重合開始剤 ベンゾイルパーオキサイド 0.1g 溶媒 メチルエチルケトン 7.19g 尚、熱重合性記録層の波長830nmにおける透過濃度は0.8
であった。
Photothermal conversion substance Carbon black dispersion 1.21 g (carbon content 33% by weight) Thermopolymerizable compound dipentaerythritol hexaacrylate 0.74 g (DPHA) (manufactured by Nippon Kayaku Co., Ltd.) Alkali-soluble thermoplastic resin Methyl methacrylate (MMA) -methacrylic acid (MAA) copolymer (molar ratio 8: 2, M W = 25000) 0.75 g thermal polymerization initiator benzoyl peroxide 0.1 g solvent methyl ethyl ketone 7.19 g The wavelength of the thermopolymerizable recording layer is 830 nm. Transmission density is 0.8
Met.

【0055】得られた記録媒体に実施例1と同様に画像
露光を行い、以下の組成の現像液に、25℃で30秒浸漬し
て未露光部分を溶出した。
Image exposure was performed on the obtained recording medium in the same manner as in Example 1, and the unexposed portion was eluted by immersing the recording medium in a developer having the following composition at 25 ° C. for 30 seconds.

【0056】現像液組成 珪酸ナトリウム 25g 水酸化カリウム 15g 水 1000g 露光強度0.2メガワット/cm2における画像視認可能感度
が200mJ/cm2で、2000DPI以上の解像度が得られた。
又、記録媒体を60℃に加熱しながら露光したところ、露
光強度0.2メガワット/cm2における画像視認可能感度は
100mJ/cm2にまで上昇した。
Developer composition Sodium silicate 25 g Potassium hydroxide 15 g Water 1000 g Image visible sensitivity at an exposure intensity of 0.2 MW / cm 2 was 200 mJ / cm 2 , and a resolution of 2000 DPI or more was obtained.
Also, when the recording medium was exposed while being heated to 60 ° C., the image visible sensitivity at an exposure intensity of 0.2 megawatt / cm 2 was
It has risen to 100 mJ / cm 2 .

【0057】実施例5 実施例1と同様に作成した画像記録媒体の熱重合性記録
層面に、厚さ14μmの易接着層付きPETフィルムにメ
チルセルロースをコーティングした剥離支持体をラミネ
ートした画像記録媒体を作成した。
Example 5 An image recording medium prepared in the same manner as in Example 1 was prepared by laminating a release support having a 14 μm-thick PET film with an easy-adhesion layer coated with methylcellulose on the heat-polymerizable recording layer side. Created.

【0058】実施例1と同様に画像露光を行った後、剥
離支持体を曲げるようにして画像記録媒体から剥離した
ところ、露光強度0.2メガワット/cm2における画像視認
可能感度が300mJ/cm2で、1000DPIの解像度が得られ
た。
After imagewise exposure in the same manner as in Example 1, the release support was bent and released from the image recording medium, and the image visible sensitivity at an exposure intensity of 0.2 megawatt / cm 2 was 300 mJ / cm 2 . , A resolution of 1000 DPI was obtained.

【0059】[0059]

【発明の効果】本発明により、簡便な現像方法により高
精細なデジタル画像を高感度で得ることができ、又、画
像記録媒体の保存性にも優れる。
According to the present invention, a high-definition digital image can be obtained with high sensitivity by a simple developing method, and the storability of an image recording medium is also excellent.

Claims (8)

【特許請求の範囲】[Claims] 【請求項1】 光熱変換物質、熱重合性樹脂及び熱重合
開始剤を含有する熱重合性記録層を支持体上に有するこ
とを特徴とする画像記録媒体。
1. An image recording medium having a heat-polymerizable recording layer containing a photothermal conversion substance, a heat-polymerizable resin and a heat-polymerization initiator on a support.
【請求項2】 熱重合性記録層上に水溶性の保護層を有
することを特徴とする請求項1に記載の画像記録媒体。
2. The image recording medium according to claim 1, further comprising a water-soluble protective layer on the heat-polymerizable recording layer.
【請求項3】 未露光部を転写するためのシートを熱重
合性記録層上に有することを特徴とする請求項1に記載
の画像記録媒体。
3. The image recording medium according to claim 1, further comprising a sheet for transferring the unexposed portion on the thermopolymerizable recording layer.
【請求項4】 熱重合性記録層が酸発生剤を含有するこ
とを特徴とする請求項1,2又は3に記載の画像記録媒
体。
4. The image recording medium according to claim 1, wherein the heat-polymerizable recording layer contains an acid generator.
【請求項5】 熱重合開始剤のラジカル発生のための活
性化エネルギーが30Kcal/モル以上であることを特徴と
する請求項1,2,3又は4に記載の画像記録媒体。
5. The image recording medium according to claim 1, wherein the activation energy for radical generation of the thermal polymerization initiator is 30 Kcal / mol or more.
【請求項6】 請求項1,2,3,4又は5に記載の画
像記録媒体に像様に光を照射した後、転写、剥離及び現
像液への浸漬から選ばれる方法により現像することを特
徴とする画像形成方法。
6. The image recording medium according to claim 1, 2, 3, 4 or 5, after being imagewise irradiated with light, developed by a method selected from transfer, peeling and immersion in a developing solution. A characteristic image forming method.
【請求項7】 記録媒体の記録面における露光照度が0.
1メガワット/cm2以上であることを特徴とする請求項6
に記載の画像形成方法。
7. The exposure illuminance on the recording surface of the recording medium is 0.
7. The power consumption is 1 megawatt / cm 2 or more.
The image forming method described in 1 ..
【請求項8】 予め画像記録媒体を加熱して光照射を行
うことを特徴とする請求項6又は7に記載の画像形成方
法。
8. The image forming method according to claim 6, wherein the image recording medium is heated in advance to perform light irradiation.
JP6243054A 1994-10-06 1994-10-06 Image recording medium and image forming method using the medium Pending JPH08108621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6243054A JPH08108621A (en) 1994-10-06 1994-10-06 Image recording medium and image forming method using the medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6243054A JPH08108621A (en) 1994-10-06 1994-10-06 Image recording medium and image forming method using the medium

Publications (1)

Publication Number Publication Date
JPH08108621A true JPH08108621A (en) 1996-04-30

Family

ID=17098128

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6243054A Pending JPH08108621A (en) 1994-10-06 1994-10-06 Image recording medium and image forming method using the medium

Country Status (1)

Country Link
JP (1) JPH08108621A (en)

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