JP3712101B2

JP3712101B2 - Photosensitive material transfer device

Info

Publication number: JP3712101B2
Application number: JP16781699A
Authority: JP
Inventors: 孝義村中
Original assignee: Noritsu Koki Co Ltd
Current assignee: Noritsu Koki Co Ltd
Priority date: 1999-06-15
Filing date: 1999-06-15
Publication date: 2005-11-02
Anticipated expiration: 2019-06-15
Also published as: JP2000356820A

Description

【０００１】
【発明の属する技術分野】
本発明は、シート状の感光材料を送る供給経路に配置された案内機構が、感光材料の側部を案内する溝部を有した左右一対の案内体と、この左右の案内体による案内幅を調節する幅調節手段とを備えて構成されると共に、この幅調節手段が、左右の案内体を夫々の溝部の底面で感光材料の両側部を挟み込む位置まで接近させた後に、予め設定された量だけ離間方向に移動させて案内幅を設定するよう構成されている感光材料の搬送装置に関する。
【０００２】
【従来の技術】
上記のように構成された感光材料の搬送装置として特開平９‐２３５０５５号公報に示されるものが存在し、この従来の技術では、感光材料を案内するガイド（案内機構）がペーパマガジンからの感光材料を送る経路に沿って配置されると共に、このガイド（案内機構）が第１ガイド部材（案内体）と第２ガイド部材（案内体）と、これらの間隔を設定するスクリューシャフトとを備えて構成され、感光材料のガイド幅（案内幅）を設定する際にはガイドの位置に感光材料としての印画紙を送った状態で、パルスモータでスクリューシャフトを回転操作して第１ガイド部材と第２ガイド部材との間に感光材料を挟み込むと共に、この挟み込み時にはトルクリミッターによって第１ガイド部材と第２ガイド部材との移動を阻止し、この後に、パルスモータを予め決められた量だけ逆転させることで印画紙と第１ガイド部材と第２ガイド部材との間に僅かな隙間を形成するよう構成されている。
【０００３】
【発明が解決しようとする課題】
この従来の技術のように印画紙を挟み込む位置まで第１ガイド部材と第２ガイド部材を移動させ、この後に夫々の間隔を僅かに拡大する方向に移動させるものでは印画紙の幅の誤差の影響を受けることなく、その感光材料の幅に基づいて第１ガイド部材と第２ガイド部材との間隔を最適な値に設定できるものである。又、従来の技術には印画紙を湾曲して案内する部位において第１ガイド部材と第２ガイド部材とを接近作動させて印画紙を挟み込むことで、印画紙の腰の強さを利用して印画紙の案内幅を設定する有効性が記載されている。そこで、印画紙を湾曲させて搬送させる部位において印画紙を挟み込むことを考えるに、印画紙が湾曲した部位では前述のように腰の強さを利用できるものの、この湾曲部位に連なる直線部位に位置する印画紙は幅方向からの圧縮力に弱く、第１ガイド部材と第２ガイド部材とに印画紙を挟み込んだ際に、各ガイド部材の取付誤差や寸法誤差等により、湾曲部位で挟み込む以前に直線部位で印画紙を挟み込む状態に陥った場合には、印画紙を変形させたり歪ませ、この変形が湾曲部の印画紙の姿勢や形状に影響して腰の強さを半減したり、いびつな湾曲形状に変形することから必要とする精度の案内幅を設定できないこともあった。
【０００４】
本発明の目的は、感光材料を湾曲させて搬送させる部位に配置された案内機構の案内体の案内幅を精度高く設定し得る感光材料の搬送装置を合理的に構成する点にある。
【０００５】
【課題を解決するための手段】
本発明の第１の特徴（請求項１）は、シート状の感光材料を送る供給経路に配置された案内機構が感光材料の側部を案内する溝部を有した左右一対の案内体と、この左右の案内体による案内幅を調節する幅調節手段とを備えて構成されると共に、この幅調節手段が、左右の案内体を夫々の溝部の底面で感光材料の両側部を挟み込む位置まで接近させた後に、予め設定された量だけ離間方向に移動させて案内幅を設定するよう構成されている感光材料の搬送装置において、前記供給経路のうち感光材料を湾曲させて送る部位に配置された案内機構が、感光材料を湾曲させて案内する湾曲案内部と感光材料を直線的に案内する直線案内部とを一体形成した左右一対の案内体で構成され、前記直線案内部における左右の案内体の夫々の溝部の底面が、感光材料の案内幅を前記湾曲案内部よりも拡大する方向に深く形成されている点にあり、その作用、及び、効果は次の通りである。
【０００６】
本発明の第２の特徴（請求項２）は請求項１において、前記幅調節手段が、前記左右の案内体を感光材料の幅方向に往復移動させるアクチュエータと、このアクチュエータの駆動によって左右の案内体の溝部の底面に感光材料が挟み込まれた際にアクチュエータから左右の案内体への駆動力の伝達を遮断するトルクリミッターとを備えて構成されている点にあり、その作用、及び、効果は次の通りである。
【０００７】
本発明の第３の特徴（請求項３）は請求項２において、前記感光材料を湾曲させて案内する部位の湾曲内側に大径ローラを配置し、湾曲外側に小径ローラを配置し、この大径ローラと小径ローラとで感光材料を面方向から挟み込む挟持状態と、挟み込みを解除する解除状態とに切換自在な搬送ローラを構成すると共に、前記大径ローラの外周面を前記感光材料を湾曲させて搬送する外径に設定し、前記アクチュエータによって左右の案内体を移動させる際には前記大径ローラを小径ローラから離間させる方向に移動させる解除状態に切換るよう制御順序が設定されている点にあり、その作用、及び、効果は次の通りである。
【０００８】
〔作用〕
上記第１の特徴によると、感光材料の案内幅を設定するために左右の案内体で感光材料を挟み込んだ場合には、直線案内部の溝部での感光材料を挟み込みを回避しながら夫々の湾曲案内部の溝部の底面で感光材料を挟み込む形態となるので、直線案内部の溝部での挟み込みによる感光材料の変形に起因する悪影響を回避した状態で、湾曲状態の感光材料の腰の強さを有効に利用して左右の案内体の相対位置関係を設定できる。そして、この相対位置を基準として左右の案内体を設定量だけ離間方向に移動させることによって感光材料の両端と溝部の底面との間に必要とする間隙が形成した案内幅を設定し得るものとなる。
【０００９】
上記第２の特徴によると、アクチュエータの駆動力で左右の案内体の溝部の底面に感光材料を挟み込んだ場合には、トルクリミッターがアクチュエータから案内体への駆動力の伝達を遮断して案内体の移動を阻止する状態となる。そして、この状態に達した後には左右の案内体を設定量だけ離間させることで、感光材料の両端部と案内体の溝部との間に必要とする間隙が形成されるものとなる。
【００１０】
上記第３の特徴によると、案内幅を設定する際には搬送ローラを構成する大径ローラを小径ローラから離間させる方向に移動させることで感光材料の挟み込みが解除された状態での感光材料の幅方向へ自由移動が許されるので、一方の案内体の溝部の底面に感光材料の一方の側部だけが接触する不都合を回避して、左右の案内体の溝部の底面から感光材料の両側端に均等に圧力を作用させた状態で該感光材料を挟み込めるものとなり、その結果、感光材料の両端部と案内体の溝部との間に必要とする間隙が形成されるものとなる。又、この設定の後に感光材料を搬送する場合には、搬送ローラの挟み込みによって感光材料を良好に湾曲させ得るので案内体の溝部の内壁面に感光材料を強く接触させる不都合を解消して感光材料を円滑に搬送できるものとなる。
【００１１】
〔発明の効果〕
従って、感光材料を湾曲させて搬送させる部位に配置された案内機構の案内体の案内幅を精度高く設定して感光材料を良好に搬送し得る感光材料の搬送装置が合理的に構成されたのである。又、アクチュエータの駆動力で案内体を移動させるものでありながら感光材料の挟み込みを検出する圧力センサ等の複雑な検出系を備えずとも感光材料を適切に挟み込むものとなり、そして、ローラに挟み込んで感光材料を湾曲させて搬送するものでありながら案内幅を設定を精度高く設定し、案内幅の設定後には良好に感光材料を搬送し得るものとなった。
【００１２】
【発明の実施の形態】
以下、本発明の実施の形態を図面に基づいて説明する。
図１には、写真プリント装置の概略ブロック図が示され、この写真プリント装置ではハロゲンランプを有した白色光源１からの光線をフィルムキャリアＣに支持された写真フィルムとしての１３５サイズのネガフィルム２（ネガティブフィルム）に導き、このネガフィルム２のコマ画像を光学レンズ３で取出すと共に、揺動ミラー４を介してフィルムスキャナー部Ｓに導いてデジタル信号に光電変換する系を備えている。又、フィルムキャリアＣのネガフィルム２の搬送を制御し、揺動ミラー４を制御し、フィルムスキャナー部Ｓからの信号が入力するコントローラ５を備えている。このコントローラ５はペーパマガジン６Ｍに収められた印画紙６（シート状の感光材料の一例）を供給経路に沿って露光部に送出す印画紙供給部Ｆ（感光材料の搬送装置の一例）と、露光部で露光された印画紙６を現像処理する現像処理部Ｄとに制御信号を出力し、更に、各種処理情報が表示される情報が表示されるモニター７に制御信号を出力し、各種処理命令を入力するための操作卓８からの信号が入力する。
【００１３】
前記揺動ミラー４はネガフィルム２を透過した光源１から光ビームを導く副走査方向に揺動作動するよう構成され、前記フィルムスキャナ部Ｓは、光学レンズ３からの光ビームをプリズム（図示せず）で３方向に分岐し、夫々の光ビームを赤色、緑色、青色のフィルタ等で３原色に色分解し、このように色分解された画像情報を３つのＣＣＤラインセンサ（図示せず）で取り込むよう構成されている。尚、この３つのＣＣＤラインセンサは主走査方向に多数（例えば５０００個）のＣＣＤ素子が配置され、このＣＣＤラインセンサからの各画素信号は所定の時間の露光で電荷を蓄積させた後、サンプルアンドホールド回路（図示せず）を介して各画素信号が連続した画像信号として取出され、このように取出された信号は８ビットのデジタル信号の輝度情報に変換されてコントローラ５に取込まれるものとなっている。
【００１４】
図１〜図７に示すように、前記印画紙供給部Ｆは、装置上部に配置された前記ペーパマガジン６Ｍから下方に送られる印画紙６を水平方向に挟持搬送するよう第１モータＭ１で駆動される搬送ローラの一例としての大径ローラ１１と、一対の小径ローラ１２，１２とを備えた第１搬送機構Ｆ１（案内機構の一例）を備えると共に、印画紙６をプリントサイズに切断するよう互いに剪断位置に配置されカッターソレノイドＣＳで駆動されるカッター１３，１３と、カッター１３，１３で切断された印画紙６を水平方向に挟持搬送するよう第２モータＭ２で駆動される複数の搬送ローラ１４‥‥を備えた第２搬送機構Ｆ２（案内機構の一例）とを備えて成っている。又、前記露光部は、第２搬送機構Ｆ２からの印画紙６を負圧によって吸着状態で送るよう搬送モータＭＦで駆動される３つのプーリ１５，１５，１５と、これらに巻回する搬送ベルト１６と、この搬送ベルト１６に送られた印画紙６に負圧を作用させる吸引機構（図示せず）とを備えた吸着搬送系とを備えると共に、この吸着搬送系で露光位置にセットされた印画紙６に露光を行うよう移動モータＭＣで駆動されるタイミングプーリ１７，１７に巻回するタイミングベルト１８に連結したプリントヘッド１９とを備えて構成されている。そして、コントローラ５から第１モータＭ１、カッターソレノイドＣＳ、第２モータＭ２、搬送モータＭＦ、移動モータＭＣ、プリントヘッド１９夫々に対して制御信号を出力する系が形成されている。
【００１５】
尚、プリントヘッド１９としては、液晶シャッター方式、レーザー露光方式、ＣＲＴ方式などが知られているが、この装置では、主走査方向に３列に多数の開口を形成し、夫々の開口の列を赤色、緑色、青色夫々のフィルターで覆うと共に、内部に配置した蛍光管等の白色光源から夫々の開口へ光線の遮断と通過との切換を行う液晶式のシャッターを備えた液晶シャッターを用いたライン露光型が採用され移動モータＭＣの駆動によってプリントヘッド１９を主走査方向と直交する方向に移動させながら印画紙６に対して露光を行うよう構成されている。
【００１６】
そして、この写真プリント装置でプリントを行う際には、フィルムキャリアＣにネガフィルム２をセットし、プリントを行う指示を操作卓８から入力することで、ネガフィルム２のコマ画像が光学レンズ３から揺動ミラー４を介してＣＣＤラインセンサに導かれると共に、揺動ミラー４の揺動と同期してコマ画像が３原色に色分解された状態でＣＣＤラインセンサで光電変換して１ラインずつコントローラ５に取り込まれ、このように３原色に色分解された画像情報がコントローラ内のフレームメモリ（図示せず）に保存されるものとなっている。又、コントローラ５はペーパマガジン６Ｍからの印画紙６を第１搬送機構Ｆ１で所定量送ると共に、カッター１３，１３でプリントサイズに切断し、このように切断された印画紙６を第２搬送機構Ｆ２から搬送ベルト１６に送って、この搬送ベルト上に設定された露光位置まで送って停止させる。このように露光位置に印画紙６がセットされると、コントローラ５はフレームメモリの３原色の画像情報を１ラインずつ（主走査方向に沿った１ライン分のデータ）取り出しプリントヘッド１９を駆動しながら、該プリントヘッド１９を移動させることで露光を行うものとなっており、この露光が終了した印画紙６を現像処理部Ｄに送って現像処理を行うものとなっている。
【００１７】
以上の構成は従来からのデジタルプリンターと基本的に変わるところは無く、本発明の写真プリント装置は第１搬送機構Ｆ１と第２搬送機構Ｆ２で印画紙６を搬送する案内系に特徴を備えている。
【００１８】
つまり、第１搬送機構Ｆ１の小径ローラ１２，１２の支軸１２Ａ，１２Ａの両端が左右位置に配置された第１フレーム２１に遊転支承され、大径ローラ１１の支軸１１Ａの両端が第１フレーム２１に穿設された長孔２１Ａ，２１Ａによって小径ローラ１２，１２に対して接近及び離間方向に移動自在に支承され、この第１ローラ１１の支軸１１Ａ，１１Ａの両端を支持する移動フレーム２２を備えている。この移動フレーム２２に対して該大径ローラ１１を駆動する前記第１モータＭ１備えると共に、この移動フレーム２２の端部と第１フレーム２１との間にバネ２３，２３を備えて大径ローラ１１を小径ローラ１２，１２の側に圧接させるよう構成し、この移動フレーム２２を反小径ローラ側に移動させる解除ソレノイド２４が備えられている。又、大径ローラ１１と小径ローラ１２，１２とで搬送される印画紙６の湾曲した搬送経路の左右位置に対して、搬送経路に沿う姿勢に湾曲成形された断面形状「コ」字状となる案内体２５，２５が配置されている。
【００１９】
この左右の案内体２５、２５は、図１０、図１１、図１２に示すように、金属材や樹脂材で成る案内体２５の本体に対して２条の壁部２５Ｗ、２５Ｗを一体形成することで印画紙６の側部を案内する溝部Ｇが形成され、この案内体２５は印画紙６を湾曲させて案内する湾曲案内部２５Ｔと、印画紙６を直線的に案内する直線案内部２５Ｓとを一体形成して構成されている。又、左右の案内体２５、２５夫々の溝部Ｇ、Ｇのうち湾曲案内部２５Ｔの底面ＳＴより直線案内部２５Ｓの底面ＳＳが印画紙６の案内幅を拡大するよう深く形成されている。具体的には夫々の底面ＳＴ、ＳＳのレベル差Ｕは０．１〜０．３ｍｍ程度に設定されている。そして、図２〜図６に示すように、この左右の案内体２５、２５が左右の第１フレーム２１，２１に対し印画紙６の搬送方向に直交する姿勢のガイド杆２６に対してスライド移動自在に外嵌するパイプ材２７に連結支持されることで印画紙６の搬送方向に直交する方向に向けて移動自在に構成されると共に、第１フレーム２１に対し印画紙６の搬送方向に直交する姿勢で支持された操作軸３０の右ネジ部３０ａと左ネジ部３０ｂとに左右の案内体２５，２５に備えたナット３１，３１を螺合させることで、操作軸３０の回転によって左右の案内体２５が同時に接近する方向、あるいは、離間する方向に調節できるよう構成されている。尚、このようにネジ式に案内体２５，２５の案内幅を調節する系で幅調節手段Ｈが構成されている。
【００２０】
そして、この操作軸３０の一方の端部にトルクリミッター３２を介して入力ギヤ３３を備え、この入力ギヤ３３に咬合するピニオンギヤ３５を駆動するステッピングモータ型の調節モータＭＳ（アクチュエータの一例）を第１フレーム２１に備え、更に、この第１搬送機構Ｆ１の搬送終端部に印画紙６が感光しない波長域で低い照度の光線を送り出す光源３４Ａと、この光源３４Ａからの光線を受ける受光素子３４Ｂとを配置して光線が遮断されることで印画紙６を検出する構造の存否センサ３４を備えている。
【００２１】
第２搬送機構Ｆ２の複数の搬送ローラ１４‥‥のうち搬送経路の下側に配置されたものの支軸１４Ａの両端を左右位置に配置された第２フレーム３７，３７に遊転支承し、これに対向する上側に配置されたものの支軸１４Ａの両端を左右位置の第２フレーム３７，３７の長孔３７Ａ，３７Ａに対して上下移動自在に支持してあり、更に、この支軸１４Ａの両端を下方に付勢するバネ３８を備え、下側の搬送ローラ１４の支軸１４Ａ夫々の軸端に備えたタイミングプーリ３９にタイミングベルト４０を巻回すると共に、第２モータＭ２の出力軸に備えたタイミングプーリ４１でタイミングベルトを駆動する系を備えている。又、この第２搬送機構Ｆ２では上下の搬送ローラ１４，１４で印画紙６を直線的に水平方向に送る搬送経路に沿って断面形状「コ」字状のレール状となる案内体２５，２５が配置されている。
【００２２】
この左右の案内体２５，２５にも直線状の底面が形成され溝部が形成されており、後述するように印画紙６の案内幅を設定した場合には、この底面が前記湾曲案内部２５Ｔの底面ＳＴの案内幅と一致する案内幅となるよう相対関係が設定されている。そして、この案内体２５、２５は左右の第２フレーム３７に対し印画紙６の搬送方向に直交する姿勢のガイド杆２６に対してスライド移動自在に外嵌するパイプ材２７に連結支持されることで印画紙６の搬送方向に向けて移動自在に構成されると共に、第２フレーム３７に対して印画紙６の搬送方向に直交する姿勢で支持された操作軸３０の右ネジ部３０ａと左ネジ部３０ｂとに左右の案内体２５，２５に備えたナット３１，３１を螺合させることで、操作軸３０の回転によって左右の案内体２５，２５が同時に接近する方向、あるいは、離間する方向に調節できるよう構成されている。尚、このようにネジ式に案内体２５，２５の案内幅を調節する系で幅調節手段Ｈが構成されている。そして、前記第１搬送機構Ｆ１の操作軸３０の軸端に備えたタイミングプーリ４３と、この第２搬送機構Ｆ２の操作軸３０の軸端に備えたタイミングプーリ４４とに亘ってタイミングベルト４５を巻回することで、夫々の案内体２５，２５の案内幅を連係して等しい量だけ調節する連係手段Ｊが構成されている。
【００２３】
この写真プリント装置では、夫々異なる幅の印画紙６を収めたペーパマガジン６Ｍを装置にセットしてプリントを行えるものであり、幅の異なる印画紙６をセットする際、あるいは、新たに印画紙６をセットする際には案内体２５，２５の幅を以下の処理で適正にセットするものとなっている。つまり、案内体２５，２５の幅を設定する際には、使用する印画紙６の幅の値（規格値）を操作卓８から入力して実行することで、図９のフローチャートに示すように、調節モータＭＳの作動で案内体２５，２５の案内幅を印画紙６より充分に広い幅い値の初期値にセットすると共に、第１モータＭ１を駆動して印画紙６の搬送を開始し、この搬送によって存否センサ３４が印画紙６を検出したタイミングで第１モータＭ１の駆動を停止する（＃１０１〜＃１０４ステップ）。次に、解除ソレノイド２４の駆動で大径ローラ１１の外周を小径ローラ１２，１２の外周から離間する位置まで移動操作（解除状態に設定）し、この状態で印画紙６の幅より狭い幅を目標として案内体２５，２５の案内幅を狭くする方向に調節モータＭＳの作動を開始し、この作動によって案内体２５，２５で図８（イ）に示す如く、印画紙６を挟み込んだ状態に達すると操作軸３０からの負荷によってトルクリミッター３２が操作軸３０の回転を阻止した状態で調節モータＭＳの作動が許されるものとなる。
【００２４】
この状態においては、図１２に示すように、左右の案内体２５、２５の湾曲案内部２５Ｔの底面ＳＴが印画紙６の両側部を挟み込む状態となっており、直線案内部２５Ｓとの底面ＳＳと印画紙６の側端とには前記レベル差Ｕに等しい隙間が形成される結果、直線案内部２５Ｓの底面ＳＳからの圧力で印画紙６が変形する不都合を回避して、湾曲した印画紙６の腰の強さを有効に利用して案内体２５、２５同士の相対位置を決めるものとなっている。この後、調節モータＭＳの作動が停止すると、予め設定された量だけ調節モータＭＳを逆方向、すなわち、案内体２５，２５の間隔を拡大する方向に作動させて図８（ロ）に示す如く、印画紙６の左右両端と案内体２５，２５との間に必要とする間隙Ｖ，Ｖを形成し、この調節が終了すると解除ソレノイド２４の駆動を停止するものとなる（＃１０５〜＃１０８ステップ）。このように調節を行った後には第１搬送機構Ｆ１、第２搬送機構Ｆ２夫々の操作軸３０，３０同士が連係されているので、第１搬送機構Ｆ１の左右の案内体２５，２５の湾曲搬送部２５Ｔの領域の案内幅と第２搬送機構Ｆ２の左右の案内体２５，２５の案内幅とが等しく適正なものとなり、又、大径ローラ１１と小径ローラ１２，１２とで印画紙６を挟み込み（挟持状態に設定して）、これら大径ローラ１１と小径ローラ１２，１２とで印画紙６を搬送できる状態に設定するものとなっている。
【００２５】
このように本発明では、第１搬送機構Ｆ１と第２搬送機構Ｆ２との印画紙６の案内幅をセットする場合には、まず印画紙６を第１搬送機構Ｆ１の位置まで送り、次に、大径ローラ１１を小径ローラ１２，１２から離間させて印画紙６が左右方向に自由に移動できる状態にセットし、この状態で左右の案内体２５，２５の間隔を狭める方向に調節モータＭＳを作動させることで、左右の案内体２５，２５が湾曲姿勢で圧縮力に対して容易に変形しない状態の印画紙６を挟み込むものとなる。特に、この挟み込み状態では案内体２５の湾曲案内部２５Ｔの底面ＳＴ同士の間に印画紙６を挟み込み、直線案内部２５Ｓの底面ＳＳと印画紙６との間に隙間を形成するので印画紙６を歪ませることなく、印画紙６の実寸法に対応した間隔となる相対位置に案内体２５、２５をセットできるものとなっている。
【００２６】
又、トルクリミッター３２は印画紙６を挟み込んだ際の負荷の作用によって操作軸３０に対する動力の伝達を遮断する程度にトルクの値を設定してあり、左右の案内体２５，２５で印画紙６を挟み込みトルクリミッター３２が作動した時点で、この第１搬送機構Ｆ１の案内体２５，２５と、第２搬送機構Ｆ２の案内体２５，２５との夫々の案内幅を印画紙６の現実の幅として基準値に設定できるものとなっている。又、このように左右の案内体２５，２５で印画紙６を挟み込んだ際に印画紙６が左右方向に移動できるので大径ローラ１１と小径ローラ１２，１２とから印画紙６に力を作用させることなく印画紙６の搬送方向での中央位置を搬送経路の幅方向での中央位置に設定するものとなっている。そして、このように左右の案内体２５，２５が印画紙６の左右両側端に接触した状態を基準にして、左右の案内体２５，２５の案内幅を拡大する方向に作動させることで、第１搬送機構Ｆ１と第２搬送機構Ｆ２とにおいて、印画紙６の左右側端と案内体２５，２５との間に図８（ロ）に示す如く、間隙Ｖ，Ｖを形成して、第１搬送機構Ｆ１、第２搬送機構Ｆ２夫々の左右の案内体２５，２５の案内幅を印画紙６の実寸法に基づいた最適な値に設定できるものとなる。
【００２７】
〔別実施の形態〕
本発明は上記実施の形態以外に、左右の案内体２５、２５の一方の溝部Ｇにおいてのみ湾曲搬送部２５Ｔと直線案内部２５Ｓとの深さを異ならせるよう底面を形成することが可能であり、又、図１３、図１４に示すように、湾曲案内部２５Ｔから一方だけに直線案内部２５Ｓが形成された案内体２５に適用することも可能である。更に、例えば、ネガフィルムの画像を印画紙６に投影露光する構造の写真プリント装置に適用することが可能であり、３つ以上の案内機構の案内幅を備えた写真プリント装置に適用することも可能である。
【００２８】
又、案内体に圧力センサや距離センサを備えておき、案内体を案内幅を狭くする方向に作動させた際に、これらのセンサで案内体が印画紙を挟み込んだことを検出したタイミングで案内体の作動を停止させるよう制御形態を設定して実施することも可能であり、感光材料としてネガティブフィルムやポジティブフィルムを用いることも可能である。
【図面の簡単な説明】
【図１】写真プリント装置の制御系のブロック図
【図２】印画紙供給部の側面図
【図３】印画紙供給部の平面図
【図４】第１搬送機構の縦断面図
【図５】第２搬送機構の縦断面図
【図６】左右の案内体の支持構造を示す縦断面図
【図７】大径ローラの移動構造と、搬送ローラの支持構造とを示す概略側面図
【図８】案内体が印画紙を挟み込んだ状態と、案内体と印画紙との間に間隙が形成された状態とを示す縦断面図
【図９】ガイド幅設定ルーチンのフローチャート
【図１０】案内体の側面図
【図１１】案内体の湾曲案内部と直線案内部との断面図
【図１２】案内体に印画紙を挟み込んだ状態を示す断面図
【図１３】別実施の形態の案内体の側面図
【図１４】別実施の形態の案内体で印画紙を挟み込んだ状態を示す断面図
【符号の説明】
６感光材料
１１，１２ローラ
２５案内体
２５Ｓ直線案内部
２５Ｔ湾曲案内部
３２トルクリミッター
Ｇ溝部
Ｈ幅調節手段
ＭＳアクチュエータ[0001]
BACKGROUND OF THE INVENTION
In the present invention, a guide mechanism arranged in a supply path for feeding a sheet-like photosensitive material has a pair of left and right guide bodies each having a groove portion for guiding a side portion of the photosensitive material, and adjusts a guide width by the left and right guide bodies. Width adjusting means, and the width adjusting means closes the left and right guide bodies to a position where the both sides of the photosensitive material are sandwiched between the bottom surfaces of the respective groove portions, and then a predetermined amount is set. The present invention relates to a photosensitive material conveying apparatus configured to set a guide width by moving in a separation direction.
[0002]
[Prior art]
As a photosensitive material conveying apparatus configured as described above, there is one disclosed in Japanese Patent Laid-Open No. 9-235055. In this conventional technique, a guide (guide mechanism) for guiding a photosensitive material is a photosensitive material from a paper magazine. The guide (guide mechanism) includes a first guide member (guide body), a second guide member (guide body), and a screw shaft that sets an interval between them. When the guide width (guide width) of the photosensitive material is set, the photographic paper as the photosensitive material is fed to the position of the guide, and the screw shaft is rotated by the pulse motor to rotate the first guide member and the first guide member. 2 The photosensitive material is sandwiched between the two guide members, and at the time of sandwiching, the movement of the first guide member and the second guide member is prevented by a torque limiter. It is configured to form a slight gap between the predetermined amount by paper by reversing and the first guide member and the second guide member Sumota.
[0003]
[Problems to be solved by the invention]
If the first guide member and the second guide member are moved to a position where the photographic paper is sandwiched as in the prior art, and then moved in a direction in which the distance between them is slightly increased, the influence of the error in the width of the photographic paper. Without being received, the distance between the first guide member and the second guide member can be set to an optimum value based on the width of the photosensitive material. Further, in the conventional technology, the first guide member and the second guide member are moved close to each other at a portion where the photographic paper is curved and guided, and the photographic paper is sandwiched between the first guide member and the second guide member. The effectiveness of setting the guide width of photographic paper is described. Therefore, considering that the photographic paper is sandwiched in the portion where the photographic paper is bent and conveyed, the strength of the waist can be used as described above in the portion where the photographic paper is bent, but it is positioned in a straight portion connected to the curved portion. The photographic paper is weak against the compressive force in the width direction, and when the photographic paper is sandwiched between the first guide member and the second guide member, before being sandwiched at the curved portion due to mounting error or dimensional error of each guide member If you fall into a state where the photographic paper is sandwiched between straight lines, the photographic paper will be deformed or distorted, and this deformation will affect the posture and shape of the photographic paper in the curved part, reducing the waist strength by half, In some cases, the guide width with the required accuracy cannot be set due to deformation into a curved shape.
[0004]
An object of the present invention is to rationally configure a photosensitive material transport device capable of setting the guide width of a guide body of a guide mechanism arranged at a site where the photosensitive material is curved and transported with high accuracy.
[0005]
[Means for Solving the Problems]
A first feature of the present invention (Claim 1) is that a guide mechanism disposed in a supply path for feeding a sheet-like photosensitive material has a pair of left and right guide bodies each having a groove for guiding a side portion of the photosensitive material. Width adjusting means for adjusting the guide width by the left and right guide bodies, and this width adjusting means brings the left and right guide bodies close to the position where the both sides of the photosensitive material are sandwiched between the bottom surfaces of the respective groove portions. In the photosensitive material transport apparatus configured to set the guide width by moving in the separation direction by a predetermined amount after the guide, the guide disposed in the portion of the supply path that is curved to feed the photosensitive material The mechanism is composed of a pair of left and right guide bodies integrally forming a curved guide portion that guides the photosensitive material by bending it and a linear guide portion that guides the photosensitive material linearly, and the left and right guide bodies in the linear guide portion Respectively The bottom surface of the groove portion is deeply formed in the direction in which the guide width of the photosensitive material is expanded more than that of the curved guide portion, and the operation and effect thereof are as follows.
[0006]
A second feature of the present invention (Claim 2) is that, in Claim 1, the width adjusting means moves the left and right guides back and forth in the width direction of the photosensitive material, and the left and right guides by driving the actuators. When the photosensitive material is sandwiched in the bottom of the groove portion of the body, it is configured to include a torque limiter that cuts off transmission of driving force from the actuator to the left and right guide bodies. It is as follows.
[0007]
A third feature of the present invention (Claim 3) is the part according to Claim 2, wherein the photosensitive material is curved and guided. A large-diameter roller is placed inside the curve and a small-diameter roller is placed outside the curve. A transport roller that can be switched between a sandwiching state in which the photosensitive material is sandwiched from the surface direction and a releasing state in which the sandwiching is released. Constitute With The outer peripheral surface of the large-diameter roller is set to an outer diameter that conveys the photosensitive material by curving it, When moving the left and right guides by the actuator Move the large diameter roller away from the small diameter roller The control order is set so as to switch to the release state, and the operation and effect are as follows.
[0008]
[Action]
According to the first feature, when the photosensitive material is sandwiched between the left and right guides in order to set the guide width of the photosensitive material, the photosensitive material is prevented from being sandwiched in the groove portion of the linear guide portion. Each Since the photosensitive material is sandwiched between the bottom surfaces of the groove portions of the curved guide portion, the strength of the waist of the curved photosensitive material is avoided while avoiding adverse effects due to deformation of the photosensitive material due to the sandwiching in the groove portions of the linear guide portion. Can be used effectively to set the relative positional relationship between the left and right guides. The guide width in which a necessary gap is formed between both ends of the photosensitive material and the bottom surface of the groove portion can be set by moving the left and right guide bodies in the separation direction by a set amount with reference to the relative position. Become.
[0009]
According to the second feature, when the photosensitive material is sandwiched between the bottom surfaces of the groove portions of the left and right guide bodies by the driving force of the actuator, the torque limiter cuts off the transmission of the driving force from the actuator to the guide body. It will be in the state which prevents movement of. After this state is reached, the left and right guides are separated by a set amount, thereby forming a necessary gap between both ends of the photosensitive material and the groove of the guide.
[0010]
According to the third feature, when the guide width is set, the transport roller By moving the large-diameter roller constituting the Since free movement in the width direction of the photosensitive material in a state where the sandwiching of the photosensitive material is released is allowed, avoiding the disadvantage that only one side of the photosensitive material contacts the bottom surface of the groove portion of one guide body, The photosensitive material is sandwiched between the bottom surfaces of the groove portions of the left and right guide bodies in a state where pressure is evenly applied to both side edges of the photosensitive material, and as a result, between the both end portions of the photosensitive material and the groove portions of the guide body. Necessary gaps are formed. Further, when the photosensitive material is transported after this setting, the photosensitive material can be curved well by sandwiching the transport roller, so that the problem of strongly contacting the photosensitive material with the inner wall surface of the groove portion of the guide body is eliminated. Can be transported smoothly.
[0011]
〔The invention's effect〕
Therefore, the photosensitive material transport apparatus capable of transporting the photosensitive material satisfactorily by setting the guide width of the guide body of the guide mechanism arranged at the site where the photosensitive material is curved and transported with high accuracy has been rationally configured. is there. In addition, the guide body is moved by the driving force of the actuator, but the photosensitive material is properly sandwiched without a complicated detection system such as a pressure sensor for detecting the sandwiching of the photosensitive material, and is sandwiched between the rollers. Although the photosensitive material is curved and conveyed, the guide width is set with high accuracy, and the photosensitive material can be conveyed satisfactorily after the guide width is set.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a schematic block diagram of a photographic printing apparatus. In this photographic printing apparatus, a 135-size negative film 2 as a photographic film supported by a film carrier C with a light beam from a white light source 1 having a halogen lamp. (Negative film), a frame image of the negative film 2 is taken out by the optical lens 3, and a system for conducting the photoelectric conversion into a digital signal by guiding it to the film scanner section S through the swing mirror 4 is provided. Further, a controller 5 is provided which controls the conveyance of the negative film 2 of the film carrier C, controls the swing mirror 4, and inputs a signal from the film scanner unit S. The controller 5 includes a photographic paper supply unit F (an example of a photosensitive material transport device) that sends the photographic paper 6 (an example of a sheet-like photosensitive material) stored in the paper magazine 6M to the exposure unit along a supply path; A control signal is output to the development processing unit D that develops the photographic paper 6 exposed in the exposure unit, and further, a control signal is output to the monitor 7 on which information on which various processing information is displayed is displayed. A signal from the console 8 for inputting a command is input.
[0013]
The oscillating mirror 4 is configured to oscillate in the sub-scanning direction for guiding the light beam from the light source 1 that has passed through the negative film 2, and the film scanner unit S receives the light beam from the optical lens 3 as a prism (not shown). 3), the light beams are separated into three primary colors using red, green, and blue filters, and the image information thus separated into three CCD line sensors (not shown). Is configured to capture. The three CCD line sensors are arranged with a large number (for example, 5000) of CCD elements in the main scanning direction, and each pixel signal from the CCD line sensor accumulates charge by exposure for a predetermined time, and then samples. Each pixel signal is taken out as a continuous image signal via an hold circuit (not shown), and the signal taken out in this way is converted into luminance information of an 8-bit digital signal and taken into the controller 5 It has become.
[0014]
As shown in FIGS. 1 to 7, the photographic paper supply unit F is driven by a first motor M1 so as to sandwich and convey the photographic paper 6 fed downward from the paper magazine 6M disposed in the upper part of the apparatus. A first conveyance mechanism F1 (an example of a guide mechanism) including a large-diameter roller 11 as an example of a conveyance roller and a pair of small-diameter rollers 12 and 12, and cutting the photographic paper 6 into a print size. Cutters 13 and 13 that are arranged at shear positions and driven by a cutter solenoid CS, and a plurality of conveying rollers that are driven by a second motor M2 so as to sandwich and convey the photographic paper 6 cut by the cutters 13 and 13 in the horizontal direction. 14... And a second transport mechanism F2 (an example of a guide mechanism). The exposure unit also includes three pulleys 15, 15, 15 driven by a transport motor MF so as to feed the photographic paper 6 from the second transport mechanism F 2 in a suction state by negative pressure, and a transport belt wound around these pulleys. 16 and a suction conveyance system provided with a suction mechanism (not shown) for applying a negative pressure to the photographic paper 6 sent to the conveyance belt 16, and set at the exposure position by this suction conveyance system. A print head 19 connected to a timing belt 18 wound around timing pulleys 17 and 17 driven by a moving motor MC so as to expose the photographic paper 6 is provided. A system for outputting control signals from the controller 5 to the first motor M1, the cutter solenoid CS, the second motor M2, the transport motor MF, the moving motor MC, and the print head 19 is formed.
[0015]
As the print head 19, a liquid crystal shutter method, a laser exposure method, a CRT method, and the like are known. In this apparatus, a large number of openings are formed in three rows in the main scanning direction. A line using a liquid crystal shutter that is covered with a red, green, and blue filter and that has a liquid crystal shutter that switches between blocking and passing light from a white light source such as a fluorescent tube arranged inside to each opening. An exposure type is adopted, and the printing paper 6 is exposed while moving the print head 19 in a direction orthogonal to the main scanning direction by driving the moving motor MC.
[0016]
When printing with this photographic printing apparatus, the negative film 2 is set on the film carrier C, and an instruction to perform printing is input from the console 8, so that the frame image of the negative film 2 is transferred from the optical lens 3. In addition to being guided to the CCD line sensor via the oscillating mirror 4, the line image is separated into three primary colors in synchronism with the oscillation of the oscillating mirror 4 and photoelectrically converted by the CCD line sensor to control the line by line. 5, the image information that has been separated into the three primary colors in this way is stored in a frame memory (not shown) in the controller. The controller 5 also feeds a predetermined amount of the photographic paper 6 from the paper magazine 6M by the first transport mechanism F1, and cuts it to the print size by the cutters 13 and 13, and the photographic paper 6 thus cut is fed to the second transport mechanism. It is sent from F2 to the conveyor belt 16 and sent to the exposure position set on this conveyor belt and stopped. When the photographic paper 6 is thus set at the exposure position, the controller 5 takes out the image information of the three primary colors of the frame memory line by line (data for one line along the main scanning direction) and drives the print head 19. However, the exposure is performed by moving the print head 19, and the photographic printing paper 6 after the exposure is sent to the development processing unit D for development processing.
[0017]
The above configuration is basically the same as that of a conventional digital printer, and the photographic printing apparatus of the present invention is characterized by a guide system that transports the photographic paper 6 by the first transport mechanism F1 and the second transport mechanism F2. Yes.
[0018]
That is, both ends of the support shafts 12A and 12A of the small diameter rollers 12 and 12 of the first transport mechanism F1 are idle-supported by the first frame 21 disposed at the left and right positions, and both ends of the support shaft 11A of the large diameter roller 11 are the first. A movement which supports both ends of the support shafts 11A and 11A of the first roller 11 by being supported by the long holes 21A and 21A formed in one frame 21 so as to be movable in the approaching and separating directions with respect to the small diameter rollers 12 and 12. A frame 22 is provided. The large-diameter roller 11 includes the first motor M1 that drives the large-diameter roller 11 with respect to the moving frame 22 and springs 23 and 23 between the end of the moving frame 22 and the first frame 21. Is arranged so as to be pressed against the small-diameter rollers 12 and 12, and a release solenoid 24 is provided for moving the moving frame 22 to the anti-small-diameter roller side. In addition, a cross-sectional shape “U” shaped by bending in a posture along the conveyance path with respect to the left and right positions of the curved conveyance path of the photographic paper 6 conveyed by the large diameter roller 11 and the small diameter rollers 12 and 12. Guide bodies 25, 25 are arranged.
[0019]
As shown in FIGS. 10, 11, and 12, the left and right guide bodies 25, 25 are integrally formed with two wall portions 25W, 25W on the main body of the guide body 25 made of a metal material or a resin material. Thus, a groove portion G for guiding the side portion of the photographic paper 6 is formed. The guide body 25 has a curved guide portion 25T for guiding the photographic paper 6 by bending it, and a linear guide portion 25S for guiding the photographic paper 6 linearly. Are integrally formed. Further, the bottom surface SS of the linear guide portion 25S is formed deeper than the bottom surface ST of the curved guide portion 25T in the groove portions G and G of the left and right guide bodies 25 and 25 so as to expand the guide width of the photographic paper 6. Specifically, the level difference U between the bottom surfaces ST and SS is set to about 0.1 to 0.3 mm. And FIG. FIG. As shown in the figure, the pipe members in which the left and right guide bodies 25, 25 are slidably fitted to the guide rods 26 in a posture orthogonal to the conveyance direction of the photographic paper 6 with respect to the left and right first frames 21, 21. The operation supported by the first frame 21 in a posture orthogonal to the conveying direction of the photographic paper 6 while being configured to be movable in the direction orthogonal to the conveying direction of the photographic paper 6 by being connected and supported by By screwing the nuts 31, 31 provided on the left and right guide bodies 25, 25 to the right screw portion 30 a and the left screw portion 30 b of the shaft 30, the left and right guide bodies 25 simultaneously approach by the rotation of the operation shaft 30. It is configured to be adjustable in the direction or the direction of separation. In addition, the width adjusting means H is configured by a system that adjusts the guide widths of the guide bodies 25 and 25 in such a screw manner.
[0020]
A stepping motor type adjustment motor MS (an example of an actuator) is provided that includes an input gear 33 at one end of the operation shaft 30 via a torque limiter 32 and drives a pinion gear 35 that meshes with the input gear 33. A light source 34A for sending out a light beam having a low illuminance in a wavelength region where the photographic paper 6 is not exposed to the transport terminal portion of the first transport mechanism F1, and a light receiving element 34B receiving the light beam from the light source 34A. And a presence / absence sensor 34 having a structure for detecting the photographic paper 6 when the light beam is blocked.
[0021]
Of the plurality of transport rollers 14 of the second transport mechanism F2, the both ends of the support shaft 14A of the one disposed on the lower side of the transport path are loosely supported on the second frames 37, 37 disposed at the left and right positions. The both ends of the support shaft 14A, which is disposed on the upper side of the support shaft 14A, are supported so as to be vertically movable with respect to the long holes 37A, 37A of the second frames 37, 37 at the left and right positions. And a timing belt 40 is wound around a timing pulley 39 provided at each shaft end of the supporting shaft 14A of the lower conveying roller 14, and the output shaft of the second motor M2 is provided. A system for driving the timing belt by the timing pulley 41 is provided. Further, in the second transport mechanism F2, guide bodies 25, 25 having a rail shape with a cross-sectional shape of “U” along a transport path in which the photographic printing paper 6 is linearly and horizontally fed by the upper and lower transport rollers 14, 14. Is arranged.
[0022]
The left and right guide bodies 25, 25 are also formed with straight bottom surfaces and grooves, and when the guide width of the photographic paper 6 is set as will be described later, this bottom surface is the curved guide portion 25T. The relative relationship is set so that the guide width matches the guide width of the bottom surface ST. The guide bodies 25 and 25 are connected and supported by a pipe member 27 that is slidably fitted to a guide rod 26 in a posture orthogonal to the conveyance direction of the photographic paper 6 with respect to the left and right second frames 37. The right screw portion 30a and the left screw of the operation shaft 30 are configured to be movable in the conveying direction of the photographic paper 6 and supported in a posture orthogonal to the second frame 37 in the conveying direction of the photographic paper 6. By screwing the nuts 31, 31 provided on the left and right guide bodies 25, 25 to the portion 30 b, the left and right guide bodies 25, 25 are simultaneously approached by the rotation of the operation shaft 30, or are separated from each other. It is configured to be adjustable. In addition, the width adjusting means H is configured by a system that adjusts the guide widths of the guide bodies 25 and 25 in such a screw manner. And the timing belt 45 is extended over the timing pulley 43 provided at the shaft end of the operation shaft 30 of the first transport mechanism F1 and the timing pulley 44 provided at the shaft end of the operation shaft 30 of the second transport mechanism F2. Coupling means J that adjusts the guide widths of the respective guide bodies 25 and 25 by an equal amount by linking them is configured.
[0023]
In this photographic printing apparatus, printing can be performed by setting paper magazines 6M containing photographic papers 6 of different widths in the apparatus. When photographic papers 6 having different widths are set or newly photographic paper 6 is added. When the guide is set, the widths of the guide bodies 25 are appropriately set by the following processing. That is, when setting the widths of the guide bodies 25, 25, the width value (standard value) of the photographic paper 6 to be used is input from the console 8 and executed, as shown in the flowchart of FIG. When the adjusting motor MS is operated, the guide widths of the guide bodies 25 are set to an initial value that is sufficiently wider than the photographic paper 6, and the first motor M1 is driven to start conveying the photographic paper 6. The drive of the first motor M1 is stopped at the timing when the presence / absence sensor 34 detects the photographic paper 6 by this conveyance (steps # 101 to # 104). Next, the release solenoid 24 is driven to move the outer periphery of the large-diameter roller 11 to a position away from the outer periphery of the small-diameter rollers 12 and 12 (set to the release state). In this state, a width narrower than the width of the photographic paper 6 is set. The operation of the adjusting motor MS is started in the direction of narrowing the guide width of the guide bodies 25, 25 as a target, and this operation puts the photographic paper 6 between the guide bodies 25, 25 as shown in FIG. When it reaches, the adjustment motor MS is permitted to operate in a state where the torque limiter 32 prevents the operation shaft 30 from rotating due to the load from the operation shaft 30.
[0024]
In this state, as shown in FIG. 12, the bottom surfaces ST of the curved guide portions 25T of the left and right guide bodies 25, 25 sandwich both side portions of the photographic paper 6, and the bottom surface SS with the straight guide portion 25S. And a side edge of the photographic paper 6 are formed with a gap equal to the level difference U, so that the photographic paper 6 is prevented from being deformed by the pressure from the bottom surface SS of the linear guide portion 25S, and curved photographic paper is avoided. The relative strength between the guide bodies 25 and 25 is determined by effectively utilizing the strength of the waist 6. Thereafter, when the operation of the adjusting motor MS is stopped, the adjusting motor MS is operated in the reverse direction, that is, in the direction in which the interval between the guide bodies 25 and 25 is increased by a preset amount, as shown in FIG. The necessary gaps V, V are formed between the left and right ends of the photographic paper 6 and the guide bodies 25, 25. When this adjustment is completed, the drive of the release solenoid 24 is stopped (# 105 to # 108). Step). After such adjustment, the operation shafts 30 and 30 of the first transport mechanism F1 and the second transport mechanism F2 are linked to each other, so that the left and right guide bodies 25 and 25 of the first transport mechanism F1 are curved. The guide width of the area of the transport section 25T and the guide width of the left and right guide bodies 25, 25 of the second transport mechanism F2 are equal and appropriate, and the photographic paper 6 is composed of the large diameter roller 11 and the small diameter rollers 12, 12. Is set so that the photographic paper 6 can be conveyed by the large diameter roller 11 and the small diameter rollers 12 and 12.
[0025]
As described above, in the present invention, when setting the guide width of the photographic paper 6 between the first conveyance mechanism F1 and the second conveyance mechanism F2, the photographic paper 6 is first fed to the position of the first conveyance mechanism F1, and then The large-diameter roller 11 is set apart from the small-diameter rollers 12 and 12 so that the photographic paper 6 can freely move in the left-right direction. In this state, the adjustment motor MS is set in such a direction as to narrow the interval between the left and right guide bodies 25 and 25. By operating the left and right guide bodies 25, 25, the photographic printing paper 6 in a state where the left and right guide bodies 25, 25 are in a curved posture and is not easily deformed by the compression force is sandwiched. In particular, in this sandwiched state, the photographic paper 6 is sandwiched between the bottom surfaces ST of the curved guide portions 25T of the guide body 25, and a gap is formed between the bottom surface SS of the linear guide portion 25S and the photographic paper 6; The guide bodies 25, 25 can be set at relative positions having an interval corresponding to the actual size of the photographic paper 6 without distortion.
[0026]
The torque limiter 32 has a torque value set to such an extent that the transmission of power to the operation shaft 30 is interrupted by the action of the load when the photographic paper 6 is sandwiched. When the torque limiter 32 is operated, the guide widths of the guide bodies 25, 25 of the first transport mechanism F1 and the guide bodies 25, 25 of the second transport mechanism F2 are set to the actual width of the photographic paper 6. Can be set as a reference value. Further, since the photographic paper 6 can move in the left-right direction when the photographic paper 6 is sandwiched between the left and right guides 25, 25, a force is applied to the photographic paper 6 from the large diameter roller 11 and the small diameter rollers 12, 12. The center position in the transport direction of the photographic paper 6 is set to the center position in the width direction of the transport path without being performed. Then, the left and right guide bodies 25 and 25 are actuated in the direction in which the guide widths of the left and right guide bodies 25 and 25 are increased with reference to the state in which the left and right guide bodies 25 and 25 are in contact with the left and right ends of the photographic paper 6. In the first transport mechanism F1 and the second transport mechanism F2, gaps V and V are formed between the left and right ends of the photographic paper 6 and the guide bodies 25 and 25 as shown in FIG. The guide widths of the left and right guide bodies 25, 25 of the transport mechanism F1 and the second transport mechanism F2 can be set to optimum values based on the actual dimensions of the photographic paper 6.
[0027]
[Another embodiment]
In the present invention, in addition to the above-described embodiment, it is possible to form the bottom surface so that the curved conveying portion 25T and the linear guiding portion 25S have different depths only in one groove portion G of the left and right guide bodies 25, 25. Further, as shown in FIGS. 13 and 14, the present invention can be applied to a guide body 25 in which a straight guide portion 25S is formed only on one side from the curved guide portion 25T. Furthermore, for example, the present invention can be applied to a photographic printing apparatus having a structure in which an image of a negative film is projected and exposed onto photographic paper 6, and can also be applied to a photographic printing apparatus having a guide width of three or more guide mechanisms. Is possible.
[0028]
In addition, a pressure sensor and a distance sensor are provided in the guide body, and when the guide body is operated in the direction of narrowing the guide width, the guidance is detected at the timing when the guide body detects that the photographic paper is sandwiched by these sensors. It is also possible to set the control form so as to stop the operation of the body, and it is also possible to use a negative film or a positive film as the photosensitive material.
[Brief description of the drawings]
FIG. 1 is a block diagram of a control system of a photographic printing apparatus.
FIG. 2 is a side view of a photographic paper supply unit.
FIG. 3 is a plan view of a photographic paper supply unit.
FIG. 4 is a longitudinal sectional view of the first transport mechanism.
FIG. 5 is a longitudinal sectional view of the second transport mechanism.
FIG. 6 is a longitudinal sectional view showing a support structure for left and right guide bodies.
FIG. 7 is a schematic side view showing a moving structure of a large-diameter roller and a support structure of a conveying roller.
FIG. 8 is a longitudinal sectional view showing a state in which the guide body sandwiches the photographic paper and a state in which a gap is formed between the guide body and the photographic paper.
FIG. 9 is a flowchart of a guide width setting routine.
FIG. 10 is a side view of the guide body.
FIG. 11 is a cross-sectional view of a curved guide portion and a straight guide portion of a guide body.
FIG. 12 is a sectional view showing a state in which photographic paper is sandwiched between guide bodies.
FIG. 13 is a side view of a guide body according to another embodiment.
FIG. 14 is a cross-sectional view showing a state in which photographic paper is sandwiched by a guide body according to another embodiment;
[Explanation of symbols]
6 Photosensitive materials
11,12 Roller
25 Guide body
25S linear guide
25T curve guide
32 Torque limiter
G groove
H width adjustment means
MS actuator

Claims

A guide mechanism arranged in a supply path for feeding a sheet-like photosensitive material has a pair of left and right guide bodies having a groove for guiding the side portions of the photosensitive material, and a width adjusting means for adjusting a guide width by the left and right guide bodies. The width adjusting means moves the guide members on the left and right to the position where the both sides of the photosensitive material are sandwiched between the bottom surfaces of the respective groove portions, and then moves in the separation direction by a preset amount. A photosensitive material conveying device configured to set a guide width, and
In the supply path, the left and right guide mechanisms arranged at a portion where the photosensitive material is bent and fed integrally form a curved guide portion that guides the photosensitive material by bending it and a linear guide portion that linearly guides the photosensitive material. Conveying photosensitive material comprising a pair of guide bodies, wherein the bottom surfaces of the respective groove portions of the left and right guide bodies in the linear guide section are formed deeper in the direction of expanding the guide width of the photosensitive material than the curved guide section. apparatus.

The width adjusting means includes an actuator for reciprocating the left and right guide bodies in the width direction of the photosensitive material, and when the photosensitive material is sandwiched between the bottom surfaces of the groove portions of the left and right guide bodies by driving the actuator, 2. The photosensitive material conveying apparatus according to claim 1, further comprising a torque limiter for interrupting transmission of driving force to the guide body.

A large-diameter roller is disposed inside the curved portion for guiding the photosensitive material to be curved , a small-diameter roller is disposed outside the curved portion , and a sandwiching state in which the photosensitive material is sandwiched from the surface direction by the large-diameter roller and the small-diameter roller , Constructs a conveying roller that can be switched to a release state that releases the pinching, and sets the outer peripheral surface of the large-diameter roller to an outer diameter that conveys the photosensitive material by curving it, and the actuator moves the left and right guide bodies 3. The photosensitive material conveying apparatus according to claim 2, wherein the control order is set so as to switch to a release state in which the large diameter roller is moved away from the small diameter roller .