JPS6357337B2 - - Google Patents
Info
- Publication number
- JPS6357337B2 JPS6357337B2 JP22719283A JP22719283A JPS6357337B2 JP S6357337 B2 JPS6357337 B2 JP S6357337B2 JP 22719283 A JP22719283 A JP 22719283A JP 22719283 A JP22719283 A JP 22719283A JP S6357337 B2 JPS6357337 B2 JP S6357337B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- film sheet
- pair
- suction
- feeding
- 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.)
- Expired
Links
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
- H04N1/0057—Conveying sheets before or after scanning
- H04N1/00588—Conveying sheets before or after scanning to the scanning position
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/08—Separating articles from piles using pneumatic force
- B65H3/0808—Suction grippers
- B65H3/0816—Suction grippers separating from the top of pile
- B65H3/0833—Suction grippers separating from the top of pile and acting on the front part of the articles relatively to the final separating direction
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
- H04N1/0057—Conveying sheets before or after scanning
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
- H04N1/0057—Conveying sheets before or after scanning
- H04N1/00599—Using specific components
- H04N1/00602—Feed rollers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00567—Handling of original or reproduction media, e.g. cutting, separating, stacking
- H04N1/0057—Conveying sheets before or after scanning
- H04N1/00599—Using specific components
- H04N1/00607—Grippers or the like, e.g. suction grippers
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Description
【発明の詳細な説明】
技術分野
本発明はフイルムシートの送り出し機構、例え
ばレーザビームで画像を形成するためにサプライ
カセツトから吸着手段にて持ち上げられた一枚の
感光性フイルムシートを露光部方向に送り出すた
めの機構に関する。Detailed Description of the Invention Technical Field The present invention relates to a film sheet feeding mechanism, for example, a film sheet feeding mechanism that moves a photosensitive film sheet lifted by suction means from a supply cassette toward an exposure section in order to form an image with a laser beam. Regarding the mechanism for sending out.
従来技術
従来、この種の送り出し機構としては、例えば
実開昭58−36734号公報、特公昭57−25820号公報
に記載のものが知られており、前者にあつてはフ
イルムシートの真空吸着機構を移動台とともに移
動させる方式、後者にあつてはフイルムシートの
吸着筒をガイド溝に従つて移動させる方式が採用
されている。Conventionally, this type of feeding mechanism has been known, for example, as described in Japanese Utility Model Application Publication No. 58-36734 and Japanese Patent Publication No. 57-25820. In the latter case, a method is adopted in which the suction tube for the film sheet is moved along a guide groove.
しかしながら、いずれも吸着手段を送り出し方
向に移動させる方式であるため、移動機構自体が
大型で複雑なものとなり、フイルムシートを吸着
手段で持ち上げてから送り出すのに必要以上の時
間を要する欠点を有している。 However, since both methods move the suction means in the feeding direction, the moving mechanism itself is large and complicated, and they have the disadvantage that it takes more time than necessary to lift the film sheet with the suction means and then send it out. ing.
発明の目的
本発明は以上の欠点に鑑みてなされたもので、
その目的は、小型で簡単な構成からなり、送り出
しに要する時間を短縮することのできるフイルム
シートの送り出し機構を提供することにある。Purpose of the Invention The present invention has been made in view of the above drawbacks.
The object of the present invention is to provide a film sheet feeding mechanism that has a small and simple configuration and can shorten the time required for feeding.
発明の要旨
以上の目的を達成するため、本発明に係るフイ
ルムシートの送り出し機構は、吸着手段にて持ち
上げられた一枚のフイルムシートを搬送ローラ対
の回転にて一方向に送り出すフイルムシートの送
り出し機構において、前記搬送ローラ対を回転駆
動しつつ送り出し方向前方からフイルムシート先
端の挾み込み位置に略同一高さで往復移動可能に
設置し、この搬送ローラ対が送り出し方向前方か
ら前記挾み込み位置に移動してフイルムシートの
先端を挾み込み、かつ送り出し方向に移動しつつ
フイルムシートを送り出すことを特徴とする。SUMMARY OF THE INVENTION In order to achieve the above object, the film sheet feeding mechanism according to the present invention has a film sheet feeding mechanism that feeds out one film sheet lifted by a suction means in one direction by rotation of a pair of conveying rollers. In the mechanism, the transport roller pair is rotatably driven and installed so as to be able to reciprocate from the front in the feeding direction to the nipping position of the leading edge of the film sheet at approximately the same height, and the transport roller pair rotates and moves the film sheet from the front in the feeding direction to the nipping position. The device is characterized in that it moves to a position to pinch the leading end of the film sheet, and then feeds out the film sheet while moving in the feeding direction.
即ち、本発明は移動手段を小型化、簡略化でき
る搬送ローラ対を移動させて吸着手段にて持ち上
げられたフイルムシートの先端を挾み込ませ、搬
送ローラ対を回転駆動しつつ送り出し方向に移動
させることにより、送り出しの速度を速めるよう
にしたものである。 That is, in the present invention, the moving means can be miniaturized and simplified.The transport roller pair is moved to sandwich the leading edge of the film sheet lifted by the suction means, and the transport roller pair is rotated and moved in the sending direction. By doing so, the speed of feeding is increased.
実施例
第1図は本発明に係るさばき機構の一実施例を
備えたレーザビームプリンタの全体構成を示し、
まずその概略を説明する。Embodiment FIG. 1 shows the overall configuration of a laser beam printer equipped with an embodiment of the handling mechanism according to the present invention.
First, I will explain the outline.
感光性フイルムシートSはサプライカセツト1
内に感光面を上にして積載され、このシートSの
先端上向にはエアーシリンダ10に接続された吸
着盤5が設置されている。吸着盤5はエアーシリ
ンダ10とともに軸8を支点として上下方向に移
動可能であり、下降して感光性フイルムシートS
に接触後エアーシリンダ10の空気吸引動作にて
シートSを吸引し、最上層にある一枚のシートS
の先端を持ち上げる。 Photosensitive film sheet S is in supply cassette 1
A suction cup 5 connected to an air cylinder 10 is installed above the leading end of the sheet S, which is stacked inside the sheet S with its photosensitive surface facing upward. The suction cup 5 is movable in the vertical direction together with the air cylinder 10 about a shaft 8, and is lowered to remove the photosensitive film sheet S.
After contacting the sheet S, the sheet S is sucked by the air suction operation of the air cylinder 10, and the sheet S in the top layer is
Lift the tip.
搬送ローラ対30は吸着盤5にて持ち上げられ
たシート紙Sの先端と略同一の高さで前後方向に
移動可能に設置したもので、シート搬送開始信号
にて回転駆動されつつ図中右方に移動して既に持
ち上げられているシートSの先端を挾み込み、こ
のシートSを直ちに保持板40上に搬送する。 The conveying roller pair 30 is installed so as to be movable in the front and back direction at approximately the same height as the leading edge of the sheet paper S lifted by the suction cup 5, and is rotated by a sheet conveyance start signal while rotating to the right in the figure. , the tip of the sheet S that has already been lifted is caught, and the sheet S is immediately conveyed onto the holding plate 40 .
保持板40は前記搬送ローラ対30から副走査
ドラム45に至る経路に水平状態で設置したもの
で、シートSより若干長い全長を有し、その表面
はシートSが滑動可能なように仕上げられてい
る。また、保持板40の搬送ローラ対30側には
プツシユレバー41が、副走査ドラム45側には
ストツパ43がそれぞれ軸42,44を支点とし
て回動自在、即ちシート搬送路中に進退可能に設
置されている。プツシユレバー41は搬送路中へ
の進入動作(図中時計回り方向への回動)にてシ
ートSの後端を前方に付勢する機能を有する。ス
トツパ43は先端がかぎ状をなし、搬送路中への
進入位置にあつてはシートSの先端が当接するこ
とによりシートSを保持板40上で正確に位置決
めする機能を有する。 The holding plate 40 is installed horizontally on the path from the transport roller pair 30 to the sub-scanning drum 45, and has a slightly longer overall length than the sheet S, and its surface is finished so that the sheet S can slide thereon. There is. Further, a push lever 41 is installed on the conveying roller pair 30 side of the holding plate 40, and a stopper 43 is installed on the sub-scanning drum 45 side so as to be rotatable about shafts 42 and 44, that is, to be able to move forward and backward in the sheet conveying path. ing. The push lever 41 has a function of urging the rear end of the sheet S forward when the sheet S enters the conveying path (rotating clockwise in the figure). The stopper 43 has a hook-shaped tip, and has the function of accurately positioning the sheet S on the holding plate 40 by abutting the tip of the sheet S when the stopper 43 enters the conveyance path.
シートSはまずストツパ43が搬送路中に進入
し、プツシユレバー41が搬送路中から退避した
状態で搬送ローラ対30にて保持板40上に送り
込まれ、プツシユレバー41を時計回り方向に回
動させることによりシートSの後端を押し、シー
トSの先端をストツパ43に当接させて位置決め
を行う。続いて、プツシユレバー41を反時計回
り方向にシートSの位置ずれが生じない速度で回
動させるとともに、ストツパ43を時計回り方向
に回動させて搬送路中から退避させ、再度プツシ
ユレバー41を時計回り方向に回動させてシート
Sの後端を押すと、シートSは左方に搬送され、
その先端は副走査ドラム45とニツプローラ46
間に挾み込まれる。 First, the stopper 43 enters the conveyance path, and with the push lever 41 retracted from the conveyance path, the sheet S is fed onto the holding plate 40 by the conveyance roller pair 30, and the push lever 41 is rotated clockwise. The rear end of the sheet S is pushed, and the leading end of the sheet S is brought into contact with the stopper 43 for positioning. Next, the push lever 41 is rotated counterclockwise at a speed that does not cause the sheet S to be misaligned, and the stopper 43 is rotated clockwise to move it out of the conveyance path, and the push lever 41 is rotated clockwise again. When the rear end of the sheet S is pushed in the direction, the sheet S is conveyed to the left,
Its tip is the sub-scanning drum 45 and the nip roller 46.
caught in between.
副走査ドラム45はプリント動作中は反時計回
り方向に連続回転駆動され、ニツプローラ46,
46もこのドラム45上に常時接触して従動回転
している。シートSはこのドラム45と前後のニ
ツプローラ46に挾み込まれると直ちに副走査ド
ラム45の回転力にて図中左方に搬送される。 The sub-scanning drum 45 is continuously rotated counterclockwise during the printing operation, and the nip roller 46,
46 is also constantly in contact with this drum 45 and rotates as a result. When the sheet S is sandwiched between the drum 45 and the front and rear nip rollers 46, it is immediately conveyed to the left in the figure by the rotational force of the sub-scanning drum 45.
一方、レーザビームユニツト50は保持板40
の上方に設置され、ビーム発生器51から発生さ
れたレーザビームは反射鏡52を介してニツプロ
ーラ46,46間に照射され、副走査ドラム45
上を搬送される感光性フイルムシートS上を主走
査し、所定の画像を形成する。 On the other hand, the laser beam unit 50
A laser beam generated from a beam generator 51 installed above is irradiated between the nip rollers 46 and 46 via a reflecting mirror 52, and is applied to the sub-scanning drum 45.
A predetermined image is formed by main scanning the photosensitive film sheet S being conveyed thereover.
このように画像を形成されたシートSは副走査
ドラム45と後段のニツプローラ46間から図中
左方に送り出され、先端から順次自重で垂れ下り
テイクアツプカセツト55内に収納される。テイ
クアツプカセツト55はシートSの搬送を検出し
て開閉される蓋を有し、十分な遮光対策が施され
ている。 The sheet S on which the image has been formed in this way is sent out from between the sub-scanning drum 45 and the nip roller 46 at the rear stage to the left in the figure, and is stored in the take-up cassette 55 by hanging down from the leading edge by its own weight. The take-up cassette 55 has a lid that is opened and closed upon detecting the conveyance of the sheet S, and is provided with sufficient light shielding measures.
このテイクアツプカセツト55内に収納された
シートSは未だ露光された状態であり、カセツト
55に収納されたままプリンタ本体から取り出さ
れ、現像、定着装置で処理される。 The sheet S stored in the take-up cassette 55 is still in an exposed state, and is taken out from the printer main body while being stored in the cassette 55 and processed by a developing and fixing device.
次に第2図以下を参照してシートSのさばき機
構および送り出し機構を詳述する。 Next, the sheet S sorting mechanism and feeding mechanism will be described in detail with reference to FIG. 2 and subsequent figures.
第2図〜第5図において、サプライカセツト1
は十分な遮光対策を施されて機外へ引出し可能に
設置され、感光性フイルムシートSは押上げ板2
上に多数枚のものが積載され、ばね3にて先端を
持ち上げられ、シートSの上面は積載枚数の増減
に拘らず同一高さを維持するようになつている。 In Figures 2 to 5, supply cassette 1
is installed so that it can be pulled out of the machine with sufficient light shielding measures, and the photosensitive film sheet S is placed on the push-up plate 2.
A large number of sheets are stacked on top, and the tip is lifted by a spring 3, so that the top surface of the sheet S remains at the same height regardless of the number of sheets stacked.
吸着盤5は本実施例では4個のものが使用さ
れ、それぞれ支持板6に取付けられ、支持板6は
その裏面に設けたブラケツト7を介して軸8に回
動自在に装着されている。即ち、四つの吸着盤5
はシートSの先端部の直上にその送り出し方向と
直交方向に並べてそれぞれ独立に上下動可能に設
置されている。また、この吸着盤5はアダプタ9
を介して支持板6上に設けたエアーシリンダ10
の室11と連通し(第6図参照)、図示しない復
帰ばねにて矢印b方向に付勢されたピストンロツ
ド12の端部はリンク手段13に連結されてい
る。 In this embodiment, four suction cups 5 are used, each of which is attached to a support plate 6, and the support plate 6 is rotatably attached to a shaft 8 via a bracket 7 provided on its back surface. That is, four suction cups 5
are arranged directly above the leading end of the sheet S in a direction perpendicular to the feeding direction thereof, and are movable up and down independently. In addition, this suction cup 5 is attached to an adapter 9.
Air cylinder 10 provided on support plate 6 via
The end of the piston rod 12, which communicates with the chamber 11 (see FIG. 6) and is biased in the direction of arrow b by a return spring (not shown), is connected to a link means 13.
リンク手段13は軸14に回動自在に取付けた
リンク15と駆動軸16に固定したリンク17と
をリンク18で連結したもので、前記ピストンロ
ツド12はリンク15,18の連結ピン19に連
結されている。また、駆動軸16の端部にはオ
ン、オフ可能なワンウエイクラツチを介して矢印
a方向にのみ回転力を伝達する歯車20が装着さ
れている。即ち、歯車20が矢印a方向に回転駆
動されると、駆動軸16とともにリンク17も矢
印a方向に回動し、リンク15もリンク18と連
動して同方向に回動し、ピストンロツド12が矢
印bとは逆方向に移動し、室11内を負圧とし、
この室11と連通する吸着盤5内を負圧とする。
歯車20からの回転駆動力が断たれると、ピスト
ンロツド12が自己の復帰ばねの作用にて矢印b
方向に復帰し、前記負圧状態が解除される。 The link means 13 is constructed by connecting a link 15 rotatably attached to a shaft 14 and a link 17 fixed to a drive shaft 16 by a link 18, and the piston rod 12 is connected to a connecting pin 19 of the links 15, 18. There is. Further, a gear 20 is attached to the end of the drive shaft 16 for transmitting rotational force only in the direction of arrow a via a one-way clutch that can be turned on and off. That is, when the gear 20 is rotationally driven in the direction of the arrow a, the link 17 also rotates in the direction of the arrow a together with the drive shaft 16, the link 15 also rotates in the same direction in conjunction with the link 18, and the piston rod 12 rotates in the direction of the arrow a. Move in the opposite direction to b, make the inside of the chamber 11 negative pressure,
The inside of the suction cup 5 communicating with this chamber 11 is made to have a negative pressure.
When the rotational driving force from the gear 20 is cut off, the piston rod 12 moves in the direction of arrow b due to the action of its own return spring.
direction, and the negative pressure state is released.
一方、前記支持板6の端部に回転自在に装着し
たローラ21上には駆動軸23に固定した二種類
のカム22a,22a,22b,22bが設置さ
れ、駆動軸23の端部にはオン、オフ可能なワン
ウエイクラツチを介して矢印a方向にのみ回転力
を伝達する歯車24が装着されている。支持板6
は重量バランスが第3図中左側が重いことによつ
て軸8を支点として反時計回り方向に付勢され、
各ローラ21が各カム22a,22bの外周面に
当接することにより回動角度を位置決めされる。
従つて、歯車24から回転駆動力が伝達されて駆
動軸とともにカム22a,22aが矢印a方向に
回転すると、カム22a,22bの外周面形状に
基づいて支持板6が回動する。 On the other hand, two types of cams 22a, 22a, 22b, 22b fixed to a drive shaft 23 are installed on a roller 21 rotatably attached to the end of the support plate 6, , a gear 24 is mounted which transmits rotational force only in the direction of arrow a via a one-way clutch which can be turned off. Support plate 6
Since the weight balance is heavier on the left side in Fig. 3, it is biased counterclockwise around the shaft 8 as a fulcrum.
The rotation angle of each roller 21 is determined by contacting the outer peripheral surface of each cam 22a, 22b.
Therefore, when the rotational driving force is transmitted from the gear 24 and the cams 22a, 22a rotate together with the drive shaft in the direction of the arrow a, the support plate 6 rotates based on the shape of the outer peripheral surface of the cams 22a, 22b.
カム22a,22bの形状は第7図イ,ロに示
すとおりであり、1回のプリント動作ごとに1回
転し、支持板6の1往復回動に基づいて吸着盤5
を上下動させ、カセツト1内に積載されている感
光性フイルムシートSの最上層の一枚の先端を吸
着して持ち上げる(第4図参照)。なお、この動
作については後述する。 The shapes of the cams 22a and 22b are as shown in FIG.
is moved up and down to attract and lift the tip of the top layer of the photosensitive film sheet S loaded in the cassette 1 (see FIG. 4). Note that this operation will be described later.
次に送り出し機構について説明する。 Next, the delivery mechanism will be explained.
搬送ローラ対30は長尺のローラ30aとその
両端に接触する板状のローラ30b,30bとか
らなり、フレーム31,31に回転自在に装着さ
れている。フレーム31,31は下端にて軸32
に回動自在に支持され、図示しないばねにて常時
矢印c方向に付勢され、中段部に設けたローラ3
3が駆動軸34に固定したカム35に当接するこ
とにより回動角度を位置決めされている。また、
駆動軸34の端部にはオン、オフ可能なワンウエ
イクラツチを介して矢印d方向にのみ回転力を伝
達する歯車36が装着されている。さらに、軸3
2と搬送ローラ30aの軸37の一端にはそれぞ
れ図示しないプーリ、タイミングベルト等にて回
転力を伝達可能に構成されており、ローラ30a
は矢印e方向に回転駆動され、ローラ30bはこ
れに従動回転する。 The transport roller pair 30 consists of a long roller 30a and plate-shaped rollers 30b, 30b that contact both ends of the long roller 30a, and is rotatably mounted on frames 31, 31. The frames 31, 31 have a shaft 32 at the lower end.
The roller 3 is rotatably supported by the roller 3 and is always biased in the direction of the arrow c by a spring (not shown), and is provided in the middle section.
3 is in contact with a cam 35 fixed to a drive shaft 34, thereby determining the rotation angle. Also,
A gear 36 is attached to the end of the drive shaft 34 and transmits rotational force only in the direction of arrow d via a one-way clutch that can be turned on and off. Furthermore, axis 3
2 and one end of the shaft 37 of the conveying roller 30a are configured to be able to transmit rotational force using pulleys, timing belts, etc. (not shown), respectively.
is rotationally driven in the direction of arrow e, and the roller 30b is driven to rotate by this.
即ち、搬送ローラ対30はカム35が回転する
ごとに軸32を支点としてフレーム31,31が
1回の往復回動を行うことにより、前記吸着盤5
にて持ち上げられたシートSの先端と略同一高さ
で前後方向に移動し、第4図に示すように矢印c
とは逆方向に移動したとき、吸着盤5にて持ち上
げられたシートSの先端を挾み込み、自身の回転
力にてシートSを前記保持板40上に送り出す。 That is, each time the cam 35 rotates, the frames 31, 31 perform one reciprocating rotation about the shaft 32, so that the conveyance roller pair 30 can move around the suction cup 5.
It moves in the front and back direction at approximately the same height as the tip of the sheet S lifted at
When moving in the opposite direction, the tip of the sheet S lifted by the suction cup 5 is pinched, and the sheet S is sent onto the holding plate 40 by its own rotational force.
ここで、シートSのさばき及び送り出しの一連
の動作について説明する。 Here, a series of operations for sorting and feeding out the sheets S will be explained.
まず、さばき動作用開始時にあつては、カム2
2a,22bの外周面上の点a1,b1(第7図
イ,ロ参照)がローラ21と接触し、支持板6が
時計回り方向に回動して各吸着盤5は最上点に位
置している(第9図参照)。シートSの供給開
始信号にてまず歯車24のワンウエイクラツチが
オンされてカム22a,22bが矢印a方向に回
転し、90゜の回転位置に達すると、外周面の点a
2,b2がローラ21と接触し、各吸着盤5は最
下点即ちカセツト1内に積載されている感光性フ
イルムシートSの上面に接触する(第9図参
照)。このとき、歯車20のワンウエイクラツチ
がオンされて駆動軸16とともにリンク17が矢
印a方向に回動し、ピストンロツド12が矢印b
とは逆方向に移動して吸着盤5内を負圧とし、各
吸着盤5がシートSの先端を吸着する。 First, when starting the handling operation, the cam 2
Points a1 and b1 (see Figure 7 A and B) on the outer peripheral surfaces of 2a and 22b come into contact with the roller 21, the support plate 6 rotates clockwise, and each suction cup 5 is positioned at the uppermost point. (See Figure 9). First, the one-way clutch of the gear 24 is turned on in response to a signal to start supplying the sheet S, and the cams 22a and 22b rotate in the direction of the arrow a. When they reach a rotational position of 90 degrees, they move to a point a on the outer circumferential surface.
2 and b2 contact the roller 21, and each suction cup 5 contacts the lowest point, that is, the upper surface of the photosensitive film sheet S loaded in the cassette 1 (see FIG. 9). At this time, the one-way clutch of the gear 20 is turned on, the link 17 rotates together with the drive shaft 16 in the direction of the arrow a, and the piston rod 12 rotates in the direction of the arrow b.
The suction cups 5 move in the opposite direction to create a negative pressure inside the suction cups 5, and each suction cup 5 suctions the leading end of the sheet S.
この状態でカム22a,22bがさらに90゜回
転すると、外周面の点a3,b3がローラ21と
接触し、両側のカム22b,22bの点b2〜b
3間は同一径を有するため、支持板6は回動する
ことなく両側の吸着盤5,5は最下点に保持され
る。内側のカム22a,22aは点a2〜a3に
かけて大径となつているため、支持板6は時計回
り方向に回動し、中央部の吸着盤5,5は中間点
まで上動する(第9図参照)。これにてシート
Sの先端は中央部分が中央部の吸着盤5,5にて
持ち上げられ、かつ両側部分が両側の吸着盤5,
5にて押えられる状態となり、最上層の一枚のみ
が確実にさばかれる。 When the cams 22a and 22b further rotate by 90 degrees in this state, points a3 and b3 on the outer peripheral surface come into contact with the roller 21, and points b2 to b of the cams 22b and 22b on both sides come into contact with the roller 21.
3 have the same diameter, the support plate 6 does not rotate and the suction cups 5, 5 on both sides are held at the lowest point. Since the inner cams 22a, 22a have a large diameter from points a2 to a3, the support plate 6 rotates clockwise, and the suction cups 5, 5 in the center move upward to the intermediate point (9th (see figure). With this, the center portion of the leading edge of the sheet S is lifted by the central suction cups 5, 5, and both side portions are lifted by the suction cups 5, 5 on both sides.
5 to ensure that only the top layer is handled.
さらにカム22a,22bが90゜回転すると、
外周面の点a4,b4がローラ21と接触し、内
側のカム22a,22aの点a3〜a4間は同一
径を有するため、支持板6は回動することなく内
側の吸着盤5,5は中間点に保持される。両側の
カム22b,22bは点a3〜a4にかけて大径
となつているため、支持板6が時計回り方向に回
動し、両側の吸着盤5,5は中間点まで上動する
(第9図参照)。これにてシートSの先端は水平
にそろえられるが、カム22a,22bがさらに
90゜回転して1回転すると、前記点a1,b1に
ローラ21が接触することとなり吸着盤5は最上
点に位置する(第9図、第4図参照)。即ち、
カム22a,22bの1回転の動作と、シリンダ
10の吸引動作にて最上層の一枚のシートSの先
端が吸着盤5の最上点まで水平状態に持ち上げら
れる。 When the cams 22a and 22b further rotate by 90 degrees,
Points a4 and b4 on the outer circumference contact the roller 21, and the points a3 and a4 of the inner cams 22a and 22a have the same diameter, so the support plate 6 does not rotate and the inner suction cups 5 and 5 held at the midpoint. Since the cams 22b, 22b on both sides have a large diameter from point a3 to a4, the support plate 6 rotates clockwise, and the suction cups 5, 5 on both sides move upward to the intermediate point (Fig. 9). reference). With this, the leading edge of the sheet S is aligned horizontally, but the cams 22a and 22b are
When the roller 21 rotates by 90 degrees and rotates once, the roller 21 comes into contact with the points a1 and b1, and the suction cup 5 is located at the uppermost point (see FIGS. 9 and 4). That is,
By one rotation of the cams 22a and 22b and the suction operation of the cylinder 10, the leading edge of the topmost sheet S is lifted horizontally to the top point of the suction cup 5.
この状態が適宜検出手段で検出されると、歯車
36のワンウエイクラツチがオンされてカム35
が矢印d方向に回転し、カム35へのローラ33
の当接点がc1からc2に移動するのに従つて、
フレーム31,31が軸32を支点として矢印c
とは逆方向に回動し、搬送ローラ対30が持ち上
げられているシートSの先端を挾み込む。同時に
歯車20のワンウエイクラツチがオフされ、ピス
トンロツド12が矢印b方向に復帰して吸着盤5
内の負圧が解除される。 When this state is detected by an appropriate detection means, the one-way clutch of the gear 36 is turned on and the cam 35 is turned on.
rotates in the direction of arrow d, and the roller 33 to the cam 35 rotates in the direction of arrow d.
As the contact point of moves from c1 to c2,
The frames 31, 31 are connected to the arrow c with the shaft 32 as the fulcrum.
The transport roller pair 30 pinches the leading end of the lifted sheet S. At the same time, the one-way clutch of the gear 20 is turned off, the piston rod 12 returns to the direction of arrow b, and the suction cup 5
The negative pressure inside is released.
搬送ローラ対30は前記移動開始と同時に回転
駆動され、シートSの先端を挾み込むと、吸着盤
5の吸着を解除されたシートSを直ちに前記保持
板40上に送り出す。カム35は1回の送り出し
にて1回転するが、カム35へのローラ33の当
接点がc2からc1に移動するに従つて、搬送ロ
ーラ対30はシートSを前方に送り出しつつ自ら
も前方(矢印c方向)に移動する。また、搬送ロ
ーラ対30の回転はシートSを保持板40上に送
り出した時点で停止される。これはシートSが以
下の過程で副走査ドラム45上を搬送されるとき
はできるだけ他の駆動を停止して駆動に伴う振動
によるシートSの搬送ムラを防止するためであ
る。 The transport roller pair 30 is driven to rotate at the same time as the movement starts, and when the leading end of the sheet S is nipped, the sheet S, which has been released from suction by the suction cup 5, is immediately sent onto the holding plate 40. The cam 35 rotates once for each feeding, but as the contact point of the roller 33 on the cam 35 moves from c2 to c1, the pair of conveying rollers 30 feeds the sheet S forward while also moving forward ( move in the direction of arrow c). Further, the rotation of the conveying roller pair 30 is stopped at the time when the sheet S is sent out onto the holding plate 40. This is to prevent uneven conveyance of the sheet S due to vibrations caused by driving by stopping other drives as much as possible when the sheet S is conveyed on the sub-scanning drum 45 in the following process.
以上の動作において、シートSは吸着盤5の上
動タイミングのずれによつて確実にさばかれて最
上層から一枚づつ送り出されていく。本実施例に
あつてはカム22a,22bの形状に応じて吸着
盤5の上下動を制御しているが、第9図中の高
さで搬送ローラ対30が挾み込み可能であれば、
〜の動作は省略してもよい。それに伴つてカ
ム22a,22bの形状も120゜単位で変化させる
こととなる。本実施例のように、〜の動作が
有効となるのは、シートSをさばいて先端ぞろえ
をする中間点と搬送ローラ対30による搬送面と
の高さが著しく異なる場合である。即ち、第9図
中の状態において、中間点を高く設定する程さ
ばき効果は大きくなる。しかし、その反面、シー
トSの中央部を高く持ち上げることによつて両側
が中央寄りにずれてしまい、2個の外側の吸着盤
5がシートSを吸着して持ち上げた際にシートS
の先端が波打つてしまい、搬送ローラ対30への
挾み込みに支障をきたすおそれが生じる。吸着盤
5の高さを中間点でいつたんそろえるのはこのよ
うな波打ちを防止するためである。 In the above operation, the sheets S are reliably sorted by the shift in timing of the upward movement of the suction cup 5, and are sent out one by one starting from the top layer. In this embodiment, the vertical movement of the suction cup 5 is controlled according to the shape of the cams 22a and 22b, but if the pair of transport rollers 30 can be inserted at the height shown in FIG.
The operations of ~ may be omitted. Accordingly, the shapes of the cams 22a and 22b are also changed in 120° increments. As in the present embodiment, the operations of ~ become effective when the height of the intermediate point where the sheet S is separated and the leading edge is aligned is significantly different from the conveyance surface by the conveyance roller pair 30. That is, in the state shown in FIG. 9, the higher the intermediate point is set, the greater the judgment effect becomes. However, on the other hand, by lifting the central part of the sheet S high, both sides shift toward the center, and when the two outer suction cups 5 suction the sheet S and lift it up, the sheet S
The leading edge of the sheet may become wavy, which may impede the insertion into the pair of conveying rollers 30. The reason why the heights of the suction cups 5 are made uniform at the midpoint is to prevent such waving.
一方、さばき動作や送り出し動作はプリントス
イツチの信号がタイマ等との組合せでシーケンス
やマイクロコンピユータにて制御され、この制御
部はプツシユレバー41、ストツパ43等他の動
作の制御部とともに電装ボツクス56に設置され
ている。 On the other hand, the handling and feeding operations are controlled by a print switch signal in combination with a timer, sequencer, and microcomputer, and this control section is installed in the electrical equipment box 56 along with other operation control sections such as the push lever 41 and stopper 43. has been done.
なお、本発明に係る送り出し機構は前記実施例
に限定するものではなく、その要旨の範囲内で
種々に変更できる。例えば、送り出し機構の搬送
ローラ対30は円弧状に移動することなく水平移
動してシートSの先端を挾み込みにいつてもよ
い。また、レーザビームプリンタ以外に医用X線
撮影装置にも適用できる。 Note that the feeding mechanism according to the present invention is not limited to the above-mentioned embodiments, and can be variously modified within the scope of the gist thereof. For example, the conveying roller pair 30 of the feeding mechanism may move horizontally to nip the leading edge of the sheet S without moving in an arc shape. In addition to laser beam printers, the present invention can also be applied to medical X-ray imaging devices.
発明の効果
以上の説明で明らかなように、本発明によれ
ば、吸着手段を送り出し方向に移動させることな
く、搬送ローラ対を移動させてフイルムシートの
先端を挾み込ませるようにしたため、従来のもの
と比べて移動手段を小型で簡略なものとすること
ができ、しかも、搬送ローラ対自体が回転しつつ
送り出し方向に移動してフイルムシートを送り出
すため、移動分だけより速くシートを送り出すこ
とができ、ひいてはプリント速度を高めることが
できる。Effects of the Invention As is clear from the above explanation, according to the present invention, the leading edge of the film sheet is sandwiched by moving the pair of conveying rollers without moving the suction means in the feeding direction. The moving means can be made smaller and simpler than the previous one, and since the transport roller pair itself rotates and moves in the feeding direction to feed the film sheet, the sheet can be fed out faster by the amount of movement. This can increase printing speed.
図面は本発明に係る送り出し機構の一実施例を
備えたレーザビームプリンタを示し、第1図は全
体構成図、第2図はさばき機構と送り出し機構の
斜視図、第3図、第4図はさばき機構と送り出し
機構の動作を説明するための正面図、第5図はそ
の平面図、第6図はエアーシリンダの断面図、第
7図、第8図はカムの正面図、第9図は吸着盤の
動作説明図である。
S…感光性フイルムシート、1…サプライカセ
ツト、5…吸着盤、10…エアーシリンダ、30
…搬送ローラ対、31…フレーム、32…軸、3
3…ローラ、35…カム。
The drawings show a laser beam printer equipped with an embodiment of the feeding mechanism according to the present invention, FIG. 1 is an overall configuration diagram, FIG. 2 is a perspective view of the sorting mechanism and the feeding mechanism, and FIGS. A front view for explaining the operation of the handling mechanism and the feeding mechanism, FIG. 5 is a plan view thereof, FIG. 6 is a sectional view of the air cylinder, FIGS. 7 and 8 are front views of the cam, and FIG. 9 is a front view of the cam. It is an explanatory diagram of operation of a suction cup. S...Photosensitive film sheet, 1...Supply cassette, 5...Suction cup, 10...Air cylinder, 30
... Conveyance roller pair, 31 ... Frame, 32 ... Axis, 3
3...roller, 35...cam.
Claims (1)
シートを搬送ローラ対の回転にて一方向に送り出
すフイルムシートの送り出し機構において、前記
搬送ローラ対を回転駆動しつつ送り出し方向前方
からフイルムシート先端の挾み込み位置に略同一
高さで往復移動可能に設置し、この搬送ローラ対
が送り出し方向前方から前記挾み込み位置に移動
してフイルムシートの先端を挾み込み、かつ送り
出し方向に移動しつつフイルムシートを送り出す
ことを特徴とするフイルムシートの送り出し機
構。 2 前記搬送ローラ対が、カム手段にて往復回動
されるフレームの先端に回転駆動可能に設置さ
れ、フレームの回動にて送り出し方向前方から挾
み込み位置に往復移動することを特徴とする特許
請求の範囲第1項記載のフイルムシート。[Scope of Claims] 1. In a film sheet feeding mechanism that sends out one film sheet lifted by a suction means in one direction by rotation of a pair of conveying rollers, the pair of conveying rollers is rotationally driven and forward in the feeding direction. The pair of conveying rollers move from the front in the feeding direction to the nipping position to nip the leading end of the film sheet, and A film sheet feeding mechanism that feeds out a film sheet while moving in a feeding direction. 2. The conveying roller pair is rotatably installed at the tip of a frame that is rotated back and forth by a cam means, and is moved back and forth from the front in the feeding direction to the nipping position as the frame rotates. A film sheet according to claim 1.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22719283A JPS60118543A (en) | 1983-11-30 | 1983-11-30 | Film sheet delivering mechanism |
US06/675,066 US4665408A (en) | 1983-11-29 | 1984-11-26 | Image recording apparatus for transporting photosensitive film sheet |
EP84114436A EP0146813B1 (en) | 1983-11-29 | 1984-11-29 | Transport mechanism for transporting photosensitive film sheet for use in image recording apparatus |
DE8484114436T DE3484185D1 (en) | 1983-11-29 | 1984-11-29 | TRANSPORT MECHANISM FOR TRANSPORTING A PHOTO SENSITIVE FILM SHEET FOR USE IN IMAGE RECORDING APPARATUS. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22719283A JPS60118543A (en) | 1983-11-30 | 1983-11-30 | Film sheet delivering mechanism |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS60118543A JPS60118543A (en) | 1985-06-26 |
JPS6357337B2 true JPS6357337B2 (en) | 1988-11-10 |
Family
ID=16856930
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22719283A Granted JPS60118543A (en) | 1983-11-29 | 1983-11-30 | Film sheet delivering mechanism |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60118543A (en) |
-
1983
- 1983-11-30 JP JP22719283A patent/JPS60118543A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS60118543A (en) | 1985-06-26 |
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