JPS63161452A - Heat developing device - Google Patents

Abstract

PURPOSE:To provide a device suitable for processing of discrete sheets and to improve heating processability (processing efficiency and uniformity of processing) by providing an electrical heating means having an electrode pair which exists on both side parts of a material in the conveying direction thereof and heats the material in the direction orthogonal with said direction to said device. CONSTITUTION:A pair of the electrodes 2, 3 are disposed to both side edges of the material 1 along the conveying direction thereof in the case of conveying said material in an arrow direction. The electrodes are connected to a power supply 4 and the energized in the transverse direction (direction orthogonal with the conveying direction) of the material. A material which is a conductive material and generates heat when energized, for example, carbon black, is previously incorporated into a photosensitive material in contact with the electrodes, for example, a base or photosensitive image receiving layer or both thereof in order to execute electrical heating. Heat developing process can be thereby executed with not only the continuous sheet but also the discrete sheet materials in particular during the conveyance of said materials. The processing efficiency is thus enhanced and the uniform heat development process in the longitudinal direction of the materials is possible. Generation of uneven heat development is prevented.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、熱現像装置に係り、さらに詳しくは、材料の
搬送方向の両側部にあって同方向と直交方向に加熱する
電極対をもつ通電加熱手段を備えた熱現像転写を行う装
置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a thermal developing device, and more specifically, a thermal developing device having a pair of electrodes located on both sides of a material in a conveyance direction and heating in a direction perpendicular to the same direction. The present invention relates to a device for performing thermal development and transfer, which is equipped with an energizing heating means.

〔発明の背景〕[Background of the invention]

熱現像により拡散性色素を放出させ、この色素を受像要
素に転写させることにより、銀画像と色素とを分離して
カラー画像を得る如き拡散転写型熱現像については、感
光要素、受像要素、熱現像方法及びその装置について既
に数多くの技術開示があり、代表的な例としては、均一
に加熱ならびに加圧を行なうことができる一対のローラ
の間を色素固定層面と感光層面とが合わされる様に受像
要素と熱現像感光要素とを重ね合わせて通過させること
により行なわれる。Diffusion transfer type thermal development, in which a color image is obtained by separating a silver image and a dye by releasing a diffusible dye through heat development and transferring this dye to an image-receiving element, requires a photosensitive element, an image-receiving element, a There have already been many technical disclosures regarding developing methods and devices, and a typical example is a method in which the surface of the dye fixing layer and the surface of the photosensitive layer are brought together between a pair of rollers that can uniformly heat and apply pressure. This is carried out by passing an image receiving element and a heat-developable photosensitive element overlapping each other.

次いで重なり合った両要素を均一に加熱し、熱現像を行
ない、熱現像により熱現像感光要素から放出された色素
を色素固定層に転写させた後、上記の２枚のシートを剥
離することにより受像要素上に画像を形成させることが
できる。Next, both overlapping elements are uniformly heated and thermally developed, and the dye released from the heat-developable photosensitive element is transferred to the dye-fixing layer by the heat development, and then the two sheets are peeled off to form an image-receiving layer. An image can be formed on the element.

この方法において、重ね合わされた感光要素と受像要素
とを熱現像転写する場合、所要の時間、重ね合せ状態を
維持する必要があるため、一対の平ベルト間に感光要素
および受像要素を直線的に通すことが考えられている。In this method, when the superimposed photosensitive element and image-receiving element are thermally developed and transferred, it is necessary to maintain the superposed state for the required time. It is thought that it will pass.

また、ドラムとこれに対向するベルトとの間を通すこと
も考えられている。It has also been considered to pass the belt between the drum and the belt facing the drum.

一方、熱現像感光材料としては、上記の感光要素と受像
要素とを重ね合わせる型式のほか、一体型モノシート熱
現像感光材料（同一支持体上に少なくとも感光性層、白
色反射層、受像層を有する熱現像感光材料）であっても
よい。この一体型モノシート熱現像感光材料については
、特開昭６１−８０１４８号、「（発明の名称）モノシ
ート型熱現像怒光材・料、（出願人）小西六写真工業株
式会社、（出願口）昭和６１年１０月２５日」に示され
ている。On the other hand, as a heat-developable photosensitive material, in addition to the above-mentioned type in which a photosensitive element and an image-receiving element are layered, there are integrated mono-sheet photothermographic materials (at least a photosensitive layer, a white reflective layer, and an image-receiving layer on the same support). (thermally developable photosensitive material) may also be used. This integrated mono-sheet photothermographic material is described in Japanese Patent Application Laid-Open No. 61-80148, "(Name of invention) Mono-sheet type heat-developable photosensitive material," (Applicant) Konishiroku Photo Industry Co., Ltd., (Applicant) October 25, 1985.

一体型モノシート熱現像感光材料の基本的層構成は、支
持体から順に下引層、感光性層（１または２層以上を有
し、２層以上の場合は中間層を有してもよい。）、白色
反射層、受像層、保護層である。The basic layer structure of an integrated monosheet photothermographic material is, in order from the support, a subbing layer, and a photosensitive layer (having one or more layers, in the case of two or more layers, it may have an intermediate layer). ), a white reflective layer, an image-receiving layer, and a protective layer.

この一体型モノシート熱現像感光材料の場合も、重ね合
わせの機構が不要なことを除けば、上記と同様な装置に
より熱現像転写を行い受像層上に画像を形成させること
ができる。In the case of this integrated mono-sheet photothermographic material, an image can be formed on the image-receiving layer by thermal development transfer using the same apparatus as described above, except that no overlapping mechanism is required.

いずれにしても、熱現像転写のためには、両要素あるい
は一体型熱現像感光材料を所定の時間、ある高温状態に
保持することが要請される。この加熱のために考えられ
ている方式は、前者のヘルド−ベルト型のものでは、少
なくとも一方のヘルドにヒートブロックを押し当てる方
式で、後者のドラム−ベルト型のものでは、ドラムを熱
ドラムとする方式等が一般的である。In any case, for thermal development transfer, it is required that both elements or the integrated photothermographic material be maintained at a certain high temperature for a predetermined period of time. The method considered for this heating is that in the former heald-belt type, a heat block is pressed against at least one heald, and in the latter drum-belt type, the drum is used as a heating drum. A common method is to

また、前記要素にたとえばカーボンなどの導電性材料を
含有した層を設け、この導電性層に要素の搬送方向に離
間させた正負一対の電極を介して電流を通ずることによ
って発生するジュール熱を利用して加熱する、いわゆる
通電加熱方式が知られている。In addition, the element is provided with a layer containing a conductive material such as carbon, and the Joule heat generated by passing current through the conductive layer through a pair of positive and negative electrodes spaced apart in the transport direction of the element is utilized. A so-called electrical heating method is known.

〔発明が解決しようとする間朋点〕[The problem that the invention attempts to solve]

この後者の通電加熱方式は、装置自体に発熱体を有する
ことが不要のため、装置内部に熱現像転写に必要な温度
以上となる部分を持つことによる種々の欠点、たとえば
装置内部の電気回路、機構部分、あるいは収蔵された部
品への悪影響や周囲の環境への影響及びこれを除去する
ための付加的手段を必要とすることなどがないだけでは
なく、加熱効率が高く、省エネルギー及び熱現像転写部
形状を小さくでき装置のコンパクト化が可能となる。The latter electric heating method does not require a heating element in the device itself, so there are various drawbacks due to the presence of parts inside the device whose temperature exceeds the temperature required for thermal development transfer, such as electric circuits inside the device, Not only does it not have any negative impact on mechanical parts or stored parts or the surrounding environment, nor does it require additional means to remove them, but it also has high heating efficiency, energy savings, and thermal development transfer. The shape of the parts can be reduced, and the device can be made more compact.

ところが、通電加熱方式を採用する場合、感光要素、受
像要素、あるいは一体型熱現像感光材料が連続シートで
あれば、それを連続的に送りながら熱を与える連続処理
を行うことができるけれども、両要素のうち少なくとも
一方あるいは一体型熱現像感光材料が個別シートである
場合、この個別シートが通電加熱用電極対間に跨ってい
ないと元来通電加熱を行うことができない。また、電極
対間距離よりかなり一長い個別シートを通電加熱する際
、個別シートを定速搬送する場合に、その個別シートの
先端が下流側電極に達した時点から個別シートの後端が
上流側電極を抜けるまで通電加熱を行うことができるけ
れども、個別シートの長さ方向に関し、通電加熱時間が
異ってしまうので、個別シートの先端および後端部は所
要の通電加熱がなされず、熱現像ムラを生じる。したが
って、搬送方向に間隔を置いて電極対を配置し、搬送方
向に沿って通電する限り、それらの電極間に個別シート
を跨らせたあと、所定の通電加熱時間だけ、電極間に停
止させることが必須である。However, when using the electrical heating method, if the photosensitive element, image receiving element, or integrated heat-developable photosensitive material is a continuous sheet, it is possible to carry out continuous processing in which heat is applied while continuously feeding the photosensitive element, image receiving element, or integrated photothermographic material. When at least one of the elements or the integrated photothermographic material is an individual sheet, electrical heating cannot be performed unless this individual sheet extends between the electrode pair for electrical heating. In addition, when heating an individual sheet with electricity, which is considerably longer than the distance between the electrode pairs, and when the individual sheet is conveyed at a constant speed, the rear end of the individual sheet is on the upstream side from the time the leading edge of the individual sheet reaches the downstream electrode. Although it is possible to conduct current heating until it passes through the electrode, since the current heating time differs in the length direction of the individual sheets, the leading and trailing ends of the individual sheets are not heated as much as required, and heat development is difficult. Causes unevenness. Therefore, as long as electrode pairs are arranged at intervals in the conveyance direction and electricity is applied along the conveyance direction, the individual sheets are straddled between the electrodes and then stopped between the electrodes for a predetermined energization heating time. This is essential.

一方で、露光処理時間は熱現像転写処理時間より一般に
かなり短い。にもかかわらず、上記のように、個別シー
トを熱現像転写部において長い処理時間滞留させておく
とすれば、露光処理済個別シートを熱現像転写部の前で
それが終るのを待機せねばならず、結局処理速度が遅く
なり、連続処理性に対して著しい障害となる。On the other hand, the exposure processing time is generally much shorter than the thermal development transfer processing time. Nevertheless, as mentioned above, if the individual sheets are to remain in the heat development transfer section for a long processing time, the exposed individual sheets must wait in front of the heat development transfer section until the process is completed. As a result, the processing speed becomes slow, which becomes a significant obstacle to continuous processing.

そこで、本発明の主たる目的は、特に個別シートを処理
するに適し、また加熱処理性（処理能率および処理の均
一性）が向上する熱現像装置を提供することにある。SUMMARY OF THE INVENTION Therefore, the main object of the present invention is to provide a heat developing apparatus which is particularly suitable for processing individual sheets and which improves heat processability (processing efficiency and uniformity of processing).

〔問題点を解決するための手段〕[Means for solving problems]

上記目的は、熱現像感光材料を通電加熱する通電加熱手
段を有する熱現像装置において；前記通電加熱手段は、
材料の両側縁部に位置しかつネオ料の搬送方向に沿って
加熱用電極対が材料に接触すべく配置されたものである
ことで達成される。The above object is to provide a thermal development apparatus having an electrical heating means for electrically heating a photothermographic material;
This is achieved by placing a pair of heating electrodes on both side edges of the material and in contact with the material along the direction of transport of the neomaterial.

なお、本発明における加熱手段は、熱現像、熱転写のい
ずれか一方あるいは両者を含むものに適用される。また
、加熱対象としては、感光要素および受像要素の少くと
も一方、あるいは一体型熱現像感光材料それ自身；さら
には本発明はその効果が個別シートである場合に顕著に
あられれるけれども、連続シートであってもよい。Note that the heating means in the present invention is applied to one or both of thermal development and thermal transfer. In addition, the object to be heated is at least one of the photosensitive element and the image receiving element, or the integrated photothermographic material itself; furthermore, although the effect of the present invention is noticeable when the sheet is an individual sheet, it can be heated when the sheet is a continuous sheet. There may be.

〔作　用〕[For production]

本発明では、通電加熱によって直接材料自身を加熱する
ものであるため、雰囲気加熱やヒートブロック等による
接触面を介しての加熱に比較して伝熱効率が高いので、
スペースが省かれて、熱現像転写部のコンパクト化が可
能である。In the present invention, since the material itself is directly heated by electrical heating, the heat transfer efficiency is higher than that of atmospheric heating or heating via a contact surface using a heat block, etc.
Space is saved, and the thermal development transfer section can be made more compact.

また、本発明にあっては、材料の両側にかつ材料の搬送
方向に沿って電極対を配置し、材料の搬′送方向と直交
する方向、すなわち材料の巾方向に通電するようにして
いるので、たとえ個別シートを定速で連続的に搬送する
場合であっても、個別シートの長さ方向に関して通電時
間は変わらず、したがって熱現像・転写ムラを生じるこ
となく均一な処理を行うことができる。Furthermore, in the present invention, electrode pairs are arranged on both sides of the material and along the material transport direction, so that current is applied in a direction perpendicular to the material transport direction, that is, in the width direction of the material. Therefore, even when individual sheets are conveyed continuously at a constant speed, the energization time does not change in the length direction of the individual sheets, so uniform processing can be performed without uneven heat development or transfer. can.

〔発明の具体的構成〕[Specific structure of the invention]

以下本発明をさらに詳説する。 The present invention will be explained in more detail below.

本発明では、通電加熱により熱現像および／または転写
するに当り、材料の両側縁部に位置しかつ材料の搬送方
向に沿って加熱用電極対を配置し、それらと材料とを接
触させ材料の搬送方向と直交する方向に通電させる。In the present invention, when performing thermal development and/or transfer by electrical heating, a pair of heating electrodes are placed on both side edges of the material and along the material transport direction, and the pair of heating electrodes are brought into contact with the material. Electrify in the direction perpendicular to the transport direction.

たとえば、第１図のように、材料ｌを矢印方向に搬送さ
せる場合、その両側縁部に、搬送方向に沿って一対の電
極２，３を配置し、これらを電源。For example, as shown in FIG. 1, when the material I is transported in the direction of the arrow, a pair of electrodes 2 and 3 are arranged along the transport direction on both side edges of the material, and these are connected to a power source.

４と接続し、一方を正極、他方を負極として、材料の巾
方向（搬送方向と直交する方向）に通電する。通電は、
直流でなくとも交流であってもよい。4, one side is used as a positive electrode and the other side is a negative electrode, and electricity is applied in the width direction of the material (direction perpendicular to the conveying direction). The energization is
It may be alternating current instead of direct current.

通電加熱を行うために、電極と接する感光材料中、たと
えば支持体もしくは感光・受像層、あるいはそれらの両
者中に、導電材料であって通電により発熱する材料たと
えばカーボンブランクを含有させておく。In order to carry out electrical heating, a conductive material that generates heat when electricity is applied, such as a carbon blank, is contained in the photosensitive material in contact with the electrodes, such as the support, the photosensitive/image-receiving layer, or both.

一方、材料と電極との接触が不十分であると、通電効率
が悪くなるので、たとえば第２図のように押圧ロール５
，５を設けて接触性を高めるのが望ましい。On the other hand, if the contact between the material and the electrode is insufficient, the current conduction efficiency will deteriorate, so for example, as shown in FIG.
, 5 is preferably provided to improve contactability.

本発明における熱現像感光材料は、感光要素と受像要素
とを重ね合せて熱を与えて熱現像転写する２シート型の
ものと、前述の一体型熱現像怒光材料からなる１シート
型のものとがある。The heat-developable photosensitive material of the present invention includes a two-sheet type in which a photosensitive element and an image-receiving element are overlapped and heat is applied for thermal development transfer, and a one-sheet type consisting of the above-mentioned integrated heat-developable photosensitive material. There is.

熱現像時間は電極対の搬送方向長さと材料の搬送速度に
よって決まる。したがって、逆に、電極対の長さは、所
要熱現像時間および搬送速度によって決めることができ
る。また、第３図のように、材料の搬送方向に、電極２
Ａ〜２Ｃ，３Ａ〜３Ｃを連設して電極長さを定めること
もできる。The thermal development time is determined by the length of the electrode pair in the transport direction and the material transport speed. Therefore, conversely, the length of the electrode pair can be determined by the required thermal development time and transport speed. In addition, as shown in FIG. 3, the electrode 2
The electrode length can also be determined by consecutively arranging A to 2C and 3A to 3C.

通電加熱開始のタイミングは任意でよい。また、材料の
巾方向に通電するとしても、未だ材料の後部が電極に接
触していなくても、その後部に若干の電流が流れる。そ
こで、材料の長さ方向に完全に通電加熱処理性を均一に
するためには、個別シートの場合、その個別シート長よ
り電極長を長くしておき、個別シートの全体が電極に接
触した時点で通電を開始し、材料の先端が電極先端を抜
けようとする時点まて通電を行うのがよい。The timing of starting the electrical heating may be arbitrary. Further, even if current is applied in the width direction of the material, a small amount of current will flow through the rear part of the material even if the rear part is not in contact with the electrode yet. Therefore, in order to make the electrical heat treatment completely uniform in the length direction of the material, in the case of individual sheets, the electrode length should be longer than the individual sheet length, and when the entire individual sheet comes into contact with the electrode, It is best to start energizing at , and continue energizing until the tip of the material is about to pass through the electrode tip.

他方、材料を熱現像中に搬送するには、第２図のように
、たとえば電極の入口および出口に設けた搬送ロール６
．６により行うことができるし、また押圧ロール５，５
の押圧回転力によっても搬送できる。さらに、第４図お
よび第５図のように、水平（直線）ベルトコンベア７や
円弧ベルトコンベア８により搬送してもよい。これらベ
ルトコンベア７．８を用い、ベルトを緊張させておくと
、ベルトが材料を電極２（３）、９に押し付けるので、
材料と電極との接触性が高まるので、接触不良による熱
現像ムラを防止できるとともに、２シート型材料の場合
には、要素相互の重ね合せ密着性に優れる。さらに、第
５図のように、円弧電極９と円弧ベルトコンベア８との
組み合せの場合、ベルトによる材料の電極への押圧力が
水平ベルトコンベアの場合に比較して大きくなる。On the other hand, in order to transport the material during thermal development, as shown in FIG.
．． 6, or press rolls 5, 5
It can also be conveyed by pressing rotation force. Furthermore, as shown in FIGS. 4 and 5, the material may be transported by a horizontal (straight) belt conveyor 7 or an arcuate belt conveyor 8. If these belt conveyors 7.8 are used and the belts are kept taut, the belts will press the material against the electrodes 2 (3) and 9.
Since the contact between the material and the electrode is improved, uneven heat development due to poor contact can be prevented, and in the case of a two-sheet type material, the mutual adhesion between the elements is excellent. Furthermore, as shown in FIG. 5, in the case of a combination of the circular arc electrode 9 and the circular arc belt conveyor 8, the pressing force of the material against the electrode by the belt is greater than in the case of a horizontal belt conveyor.

上記の通電加熱手段は、これ単独にて熱現像および／ま
たは転写に用いてもよいが、その前段およびまたは後段
に配した前述のヒートブロックや熱ドラム等の異種加熱
手段と組み合わせてもよい。The above-mentioned electrical heating means may be used alone for thermal development and/or transfer, but may also be combined with different heating means such as the aforementioned heat block or heat drum disposed in the preceding and/or subsequent stages.

この異種加熱手段は、熱風によるものであってもよい。This different type of heating means may be based on hot air.

さらに、通電加熱と異種加熱とを同時的に行ってもよい
。Furthermore, electrical heating and heterogeneous heating may be performed simultaneously.

他方、一体型熱現像感光材料でない場合には、感光要素
と受像要素との密着性は良質の転写画像を得る上で重要
である。また、密着性はムラなく密着していることは勿
論、所定圧力、すなわち０、１　ｋｇ　／　ｃｎ１以上
の圧力をもって密着していることが要求される。On the other hand, when the photosensitive material is not an integrated photothermographic material, the adhesion between the photosensitive element and the image receiving element is important in obtaining a high quality transferred image. In addition, it is required that the adhesion is not only even and adhesion but also at a predetermined pressure, that is, a pressure of 0.1 kg/cn1 or more.

第６図は２シート型の熱現像機の全体の装置例を示した
ものである。これを説明すれば、ストッカー３０からシ
ート状の感光要素ＩＡは順次一枚ごと切り出され、コン
ベア３１．３２に乗って、一対の重合ロール３３．３４
に向う、シート状の受像要素ＩＢも、ストッカー３５か
ら順次一枚ごとコンベア３６．３７に乗って、重合ロー
ル３３゜３４間に導かれる。FIG. 6 shows an example of the entire device of a two-sheet type thermal developing machine. To explain this, the sheet-like photosensitive elements IA are sequentially cut out one by one from the stocker 30, are placed on a conveyor 31, 32, and are transferred to a pair of polymerization rolls 33, 34.
The sheet-like image receiving elements IB, which are heading to the image receiving element IB, are also conveyed one by one from the stocker 35 onto the conveyor 36, 37, and are guided between the polymerization rolls 33 and 34.

感光要素ＩＡは、受像要素ＩＢとの張り合せ前において
、たとえばコンベア３２上で、ＣＲＴ３８等により画像
露光される。また、両要素Ｌ　Ａ、ＩＢは、貼り合せ前
または後の熱現像転写部に至る前において、予備加熱ヒ
ータ３９．４０によって予備加熱される。The photosensitive element IA is image-exposed by a CRT 38 or the like on the conveyor 32, for example, before being bonded to the image-receiving element IB. Further, both elements LA and IB are preheated by preheating heaters 39 and 40 before being bonded together or before reaching the subsequent thermal development transfer section.

両要素ＩＡ、ＩＢは重合ロール３３．３４によって貼り
合せられた後、第２図と同様の通電加熱手段に供せられ
、そこで通電加熱により熱現像転写処理を受ける。熱現
像転写部の両要素Ｉ　Ａ、ＩＢは、コンベア４１の出側
で、剥離機４２により分離された後、それぞれストッカ
ー４３．４４に集積される。After both elements IA and IB are bonded together by polymerization rolls 33 and 34, they are subjected to an electrical heating means similar to that shown in FIG. 2, where they undergo a thermal development transfer process by electrical heating. Both elements IA and IB of the thermal development transfer section are separated by a peeling machine 42 on the exit side of the conveyor 41, and then accumulated in stockers 43 and 44, respectively.

以上説明した装置には、熱現像過程の安定化を図るため
、感光材料の温度、通電量あるいは周囲温度等の情報を
フィードバックして通電加熱を制御する制御装置を付加
してもよい。In order to stabilize the thermal development process, the apparatus described above may be provided with a control device that controls the current heating by feeding back information such as the temperature of the photosensitive material, the amount of current applied, or the ambient temperature.

本発明における感光要素としては、支持体上にたとえば
、色素供与性ポリマー、ハロゲン化銀、・有機銀塩を含
む材料を親水性バインダーを結合剤として、塗布乾燥す
ることによって得ることができる。The photosensitive element in the present invention can be obtained by coating and drying a material containing a dye-donating polymer, silver halide, and organic silver salt on a support using a hydrophilic binder as a binder.

また、受像要素は、熱現像感光要素から拡散移動してく
る熱転写性色素を固定するためのポリマーを含有する受
像層を上記感光要素中にあるいは祇または他の合成ポリ
マーシート等の支持体に塗布して得ることができる。In addition, the image-receiving element is coated with an image-receiving layer containing a polymer for fixing the heat-transferable dye diffused from the heat-developable photosensitive element or onto a support such as yam or other synthetic polymer sheet. You can get it.

有効に用いられる受像要素の受像層としては、熱現像に
より放出乃至形成された熱現像感光層中の色素を受容す
る機能を有すればよく、例えば三級アミン又は四級アン
モニウム塩を含むポリマーで、米国特許第３，７０９，
６９０号に記載されているものが用いられる０例えばア
ンモニウム塩を含むポリマー、三級アミンを含むポリマ
ー等がある。典型的な拡散転写用の受像層としては、ア
ンモニウム塩、三級アミン等を含むポリマーをゼラチン
やポリビニルアルコール等と混合して支持体上に塗布す
ることにより得られる。別の有用な色素受容物質として
は、特開昭５７−２０７２５０号等に記載されたガラス
転位温度が４０℃以上、２５０℃以下の耐熱性有機高分
子物質で形成されるものが好ましく用いられる。The image-receiving layer of the image-receiving element that can be effectively used may have the function of receiving the dye in the heat-developable photosensitive layer released or formed by heat development, and may be, for example, a polymer containing a tertiary amine or a quaternary ammonium salt. , U.S. Patent No. 3,709,
For example, polymers containing ammonium salts, polymers containing tertiary amines, etc. are used. A typical image-receiving layer for diffusion transfer is obtained by mixing a polymer containing ammonium salt, tertiary amine, etc. with gelatin, polyvinyl alcohol, etc., and coating the mixture on a support. Another useful dye-receiving material is preferably one made of a heat-resistant organic polymer material having a glass transition temperature of 40 DEG C. or more and 250 DEG C. or less, which is described in JP-A-57-207250 and the like.

これらポリマーは受像層として支持体上に担持されてい
てもよく、又、これ自身を支持体として用いてもよい。These polymers may be supported on a support as an image-receiving layer, or may themselves be used as a support.

感光要素および受像要素用支持体としては、透明支持体
、不透明支持体等何を使用してもよいが、例えば、ポリ
エチレンテレフタレート等のフィルム及びこれらの支持
体中に酸化チタン等の顔料を含有させた支持体、バライ
タ紙、紙の上に顔料を含んだ熱可塑性樹脂をラミネート
したＲＣ紙、コート紙、布類、ガラス類、アルミニウム
等の金属等、又これら支持体の上に紺料を含んだ電子線
硬化性樹脂組成物を塗布、硬化させた支持体、及びこれ
らの支持体の上に顔料を含んだ塗布層を設けた支持体等
が挙げられる。Any support such as a transparent support or an opaque support may be used as the support for the photosensitive element and the image-receiving element. Supports such as baryta paper, RC paper laminated with thermoplastic resin containing pigment on paper, coated paper, cloth, glass, metals such as aluminum, etc. Examples include a support coated with an electron beam curable resin composition and cured, and a support coated with a pigment-containing coating layer on these supports.

熱現像感光要素へ潜像を記録するための像様露光方法と
しては、通常のカラープリンターのような全面露光方式
またはコンピュータのデータやビデオ信号を光変換し走
査露光により露光を行なってもよい。As an imagewise exposure method for recording a latent image on a heat-developable photosensitive element, exposure may be carried out by a full-surface exposure method as in a normal color printer, or by scanning exposure by optically converting computer data or video signals.

従って光源としては、一般的にはタングステンランプ、
水銀灯、ヨードランプ等のハロゲンランプ、その他ＣＲ
Ｔ、ＯＦＴ、ＬＥＤ、レーザ等を挙げることができる。Therefore, the light source is generally a tungsten lamp.
Mercury lamps, halogen lamps such as iodine lamps, and other CR
T, OFT, LED, laser, etc. can be mentioned.

〔発明の効果〕〔Effect of the invention〕

以上の通り、本発明によれば、連続シート材料は勿論の
こと、特に個別シート材料であっても、その材料を搬送
中に熱現像処理を行うことができ、処理能率が高まると
ともに、材料の長さ方向に均一な熱現像処理を行うこと
ができ、もって熱現像ムラの発生を防止できる。As described above, according to the present invention, not only continuous sheet materials but also individual sheet materials in particular can be subjected to heat development treatment while the materials are being conveyed. Uniform heat development can be performed in the length direction, thereby preventing uneven heat development.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は通電加熱手段の概略斜視図、第２図は正面図、
第３図は他の例の概略斜視図、第４図および第５図はさ
らに他の例の正面図、第６図は２シ一ト型熱現像機の概
略図である。 ■・・・材料、ＩＡ・・・感光要素、ＩＢ・・・受像要
素、２．３．９・・・電極、４・・・電源。Figure 1 is a schematic perspective view of the energizing heating means, Figure 2 is a front view,
FIG. 3 is a schematic perspective view of another example, FIGS. 4 and 5 are front views of still other examples, and FIG. 6 is a schematic view of a two-sheet type thermal developing machine. ■...Material, IA...Photosensitive element, IB...Image receiving element, 2.3.9...Electrode, 4...Power source.

Claims (1)

【特許請求の範囲】[Claims] （１）熱現像感光材料を通電加熱する通電加熱手段を有
する熱現像装置において； 前記通電加熱手段は、材料の両側縁部に位置しかつ材料
の搬送方向に沿って加熱用電極対が材料に接触すべく配
置されたものであることを特徴とする熱現像装置。(1) In a thermal development apparatus having an energizing heating means for heating a photothermographic material by energizing it; A heat developing device characterized in that the devices are arranged so as to be in contact with each other.