JPS5825375Y2 - Electrostatic copying machine wire drive device - Google Patents
Electrostatic copying machine wire drive deviceInfo
- Publication number
- JPS5825375Y2 JPS5825375Y2 JP1977128092U JP12809277U JPS5825375Y2 JP S5825375 Y2 JPS5825375 Y2 JP S5825375Y2 JP 1977128092 U JP1977128092 U JP 1977128092U JP 12809277 U JP12809277 U JP 12809277U JP S5825375 Y2 JPS5825375 Y2 JP S5825375Y2
- Authority
- JP
- Japan
- Prior art keywords
- pulley
- wire
- document
- drive
- exposure
- 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
Landscapes
- Character Spaces And Line Spaces In Printers (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
- Transmission Devices (AREA)
Description
【考案の詳細な説明】
本考案は、原稿又は光学装置を移動させて、移動中の感
光体上に原稿の［象をスリット露光する型式の静電式複
写機に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrostatic copying machine of the type that moves an original or an optical device and exposes the image of the original to a slit onto a moving photoreceptor.
従来、この型式の複写機においては、原稿を保持する原
稿載置台筐たは原稿の像を感光体上に結ｒ象させるため
の光学装置を移動するために、プーリによって張設され
た無端状ワイヤを走行駆動させている。Conventionally, in this type of copying machine, an endless frame stretched by a pulley is used to move the document tray housing that holds the document or the optical device that forms the image of the document on the photoreceptor. It drives the wire.
先行技術では、このワイヤの伸び或いはプーリなどのが
たつきなどによって、原稿載置台筐たは光学装置が移動
時に振動したり、原稿載置台筐たは光学装置に関する移
動速度むらが発生する。In the prior art, the elongation of the wire or the rattling of the pulleys or the like causes the document tray case or the optical device to vibrate during movement, or cause unevenness in the moving speed of the document tray case or the optical device.
その結果、原稿に対応した正確な露光が行なわれず、複
写画［象にブレを生じ、鮮明な複写画像を得ることがで
きないという欠点がある。As a result, accurate exposure corresponding to the original document is not performed, resulting in blurring of the copied image and the disadvantage that a clear copied image cannot be obtained.
本考案の目的は簡単な構成により原稿または光学装置の
振動や移動速度むらを解消し、プレのない鮮明な複写画
像を得ることができる複写機を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a copying machine that can eliminate vibrations and uneven movement speed of a document or an optical device with a simple configuration, and can obtain clear copied images without blurring.
以下、本考案を添付図面に示す電子写真複写機の実施例
に基づいて説明を行なう。The present invention will be described below based on an embodiment of an electrophotographic copying machine shown in the accompanying drawings.
第１図にお・いて、機体１の上部に、原稿Ａを載置した
原稿載置台２が機体１とは別体に設けられている。In FIG. 1, a document mounting table 2 on which a document A is placed is provided on the top of the device 1 separately from the device 1. As shown in FIG.
該原稿載置台２は、原稿載置台駆動機構（第２図参照）
により矢符１９のように機体１に水平往復移動可能に支
持され、複写サイクル開始と同時に原稿Ａの先端ａが機
体１の上部に設けられた照射部３の導入側に近接した位
置ＥＰと一致する原稿載置台２の露光行程開始位置で停
止・待機する。The document table 2 is a document table drive mechanism (see FIG. 2).
is supported horizontally and reciprocally by the machine body 1 as shown by arrow 19, and at the same time as the copying cycle starts, the leading edge a of the document A coincides with a position EP close to the introduction side of the irradiation section 3 provided at the top of the machine body 1. The document placement table 2 stops and waits at the exposure process start position.
その後。機内に設けられたスイッチＳ１（後述する）か
らの信号により感光紙と同期して原稿載置台２は図にお
いて右方に移動して原稿Ａのｒ象の光学的走査を行い（
露光移動）、露光移動完了の後、実線で示す元の所定位
置へ復帰する。after that. In response to a signal from a switch S1 (described later) provided in the machine, the document table 2 moves to the right in the figure in synchronization with the photosensitive paper, and optically scans the r-shaped document A (
(exposure movement), and after completion of the exposure movement, returns to the original predetermined position shown by the solid line.
機体１の内部には、ロール状感光紙４を嵌着した供給リ
ール５、ロール状感光紙４を導き出すためのガイドロー
ラ６、複写操作開始時に作動される給紙クラッチ（図示
せず）を備えた搬送ローラ対Ｔ、原稿と同じ長さに感光
紙を裁断するための裁断装置部８、帯電装置部９、露光
部１０、現像装置部１１及び乾燥乃至は定着装置部１２
をこの順序で備えた感光紙搬送路Ｂが設けられる。The interior of the machine body 1 includes a supply reel 5 on which a roll of photosensitive paper 4 is fitted, a guide roller 6 for guiding the roll of photosensitive paper 4, and a paper feed clutch (not shown) that is activated at the start of a copying operation. a pair of transport rollers T, a cutting device section 8 for cutting the photosensitive paper to the same length as the original, a charging device section 9, an exposing section 10, a developing device section 11, and a drying or fixing device section 12.
A photosensitive paper transport path B is provided which includes the following in this order.
該感光紙搬送路Ｂには、前述した各装置部の他に、感光
紙をして露光部１０を移動させるための常時駆動ローラ
対１３，１４及び複数個の搬送ローラ対１５．１６，１
７が設けられる。In addition to the above-mentioned apparatus units, the photosensitive paper conveyance path B includes a pair of constantly driven rollers 13, 14 and a plurality of conveyance roller pairs 15, 16, 1 for moving the photosensitive paper and the exposure unit 10.
7 is provided.
また、前記露光部の上流には、感光紙先端を検知して原
稿載置台２を右方向に作動（露光移動）させるためのマ
イクロスイッチＳ１が設けられている。Further, upstream of the exposure section, a microswitch S1 is provided for detecting the leading edge of the photosensitive paper and operating the document table 2 in the right direction (exposure movement).
前記照射部３と露光部１０の間には、原稿の橡を露光部
１０を移動する感光紙上に投射するために全体として１
８で示す光学装置が設けられている。Between the irradiation section 3 and the exposure section 10, a total of 1 parts are provided for projecting the image of the original onto the photosensitive paper moving through the exposure section 10.
An optical device indicated at 8 is provided.
第２図は本考案の一実施例の原稿載置台２を駆動するた
めの装置２０を示す。FIG. 2 shows a device 20 for driving the original table 2 according to an embodiment of the present invention.
原稿載置台２は複写操作時において第２図の右方に露光
移動する。The original table 2 moves to the right in FIG. 2 during a copying operation.
原稿載置台のこの露光移動方向の下手側の端部２ａには
ワイヤ２１の両端部２２，２３が固着される。Both ends 22 and 23 of a wire 21 are fixed to the lower end 2a of the document table in the exposure movement direction.
原稿載置台２の複写操作時に移動する上手側の端部２ｂ
には、原稿載置台２とともに移動する回転自在の移動プ
ーリ２４が枢着される。The upper end 2b of the original platen 2 that moves during the copying operation
A rotatable movable pulley 24 that moves together with the document mounting table 2 is pivotally attached to the .
ワイヤ２１は、一方の端部２２からプーリ２５に円弧状
に巻きかけられ、さらに駆動プーリ２６に複数回巻回さ
れ、プーリ２γを円弧状に接触して通り、原稿載置台２
の移動プーリ２４に円弧状に巻きかけられ、さらにプー
リ２７．２９を円弧状に通って、他方の端部２３に至り
、無端状に張設される。The wire 21 is wound around a pulley 25 from one end 22 in an arc shape, is further wound around a drive pulley 26 a plurality of times, passes through the pulley 2γ in an arc shape, and passes through the document mounting table 2.
It is wound around the movable pulley 24 in an arc shape, further passes through the pulleys 27 and 29 in an arc shape, reaches the other end 23, and is stretched endlessly.
プーリ２７のワイヤ部分２１ａ、２１ｂとの接触部分は
同一の外径を有する。The contact portions of the pulley 27 with the wire portions 21a, 21b have the same outer diameter.
駆動プーリ２６は複写操作時に原稿載置台２が第２図の
右方に露光移動するように回転駆動し、複写操作完了後
には原稿載置台２が第２図の左方に復帰移動するように
逆回転する。The drive pulley 26 is driven to rotate so that the original table 2 moves to the right in FIG. 2 for exposure during the copying operation, and so that the document table 2 returns to the left in FIG. 2 after the copying operation is completed. Rotate in the opposite direction.
原稿載置台２が複写待機時にむいて静止してかり、その
位置から複写操作を行なわせるために右方に露光移動す
る場合について本件考案者の一考察を述べる。A consideration by the inventor of the present invention will be given regarding the case where the original table 2 stands still while waiting for copying, and then moves to the right for exposure in order to perform a copying operation from that position.
ワイヤ２１は、移動プーリ２４からプーリ２７を経て駆
動プーリ２６に至るワイヤ部分２１ａと、移動プーリ２
４から２７，２９を経て他端部２３に至るワイヤ部分２
１ｂと、ワイヤ２１の一端部２２からプーリ２５を経て
駆動プーリ２６に至るワイヤ部分２１ｃとを含む。The wire 21 includes a wire portion 21a that extends from the movable pulley 24 to the drive pulley 26 via the pulley 27, and a wire portion 21a that extends from the movable pulley 24 to the drive pulley 26 via the pulley 27.
Wire portion 2 from 4 to the other end 23 via 27 and 29
1b, and a wire portion 21c extending from one end 22 of the wire 21 via a pulley 25 to a drive pulley 26.
ワイヤ部分２１ ａ ｔ ２１ ｂにたるみがある場合
、駆動プーリ２６が矢符３１の方向に回転してワイヤ部
分２１ａ、２１ｂにたるみがなくなる昔で１駆動プーリ
２６が回転している期間においてワイヤ部分２１ａと２
１ｂとは等しい張力Ｔでひかれる。If there is slack in the wire portions 21 a and 21 b, the drive pulley 26 rotates in the direction of the arrow 31 and the wire portions 21 a and 21 b have no slack. 21a and 2
1b is pulled with the same tension T.
この期間においてワイヤ部分２１ａが矢符５０の方向に
でだけ引かれるとすれば、それと同時に原稿載置台２は
第２図の右方へｌ／２で移動し、ワイヤ部分２１ｂはｌ
／２だけ矢符３２の方向に移動する。If the wire portion 21a is pulled only in the direction of the arrow 50 during this period, then at the same time the original table 2 moves to the right in FIG. 2 at l/2, and the wire portion 21b
/2 in the direction of arrow 32.
プーリ２７はワイヤ部分２１ａ、２１ｂによって互いに
逆方向に回転されようとし、プーリ２１にはねじれ力が
作用する。The pulley 27 tends to be rotated in opposite directions by the wire portions 21a and 21b, and a torsional force acts on the pulley 21.
両ワイヤ部分２１ａ。２１ｂの張力Ｔは相等しいのでそ
れ等ワイヤ部分２１ａ、２１ｂとプーリ２１との接触面
との間に生じる摩擦力は等しく、したがってプーリ２７
は静止した芽１でワイヤ部分２１ ａ ｔ ２１ ｂは
プーリ２７の接触局面を滑動する過渡状態となる。Both wire portions 21a. Since the tensions T of wire portions 21b are equal, the friction force generated between the wire portions 21a, 21b and the contact surface of pulley 21 is equal, and therefore the pulley 27
With the bud 1 stationary, the wire portions 21 a t 21 b are in a transient state sliding on the contact surface of the pulley 27 .
しかしてワイヤ部分２１ａはワイヤ部分２１ｂに比べて
その速度が２倍であり、したがってワイヤ部分２１ ａ
ｔ ２１ ｂのたるみがなくなった時、ワイヤ２１ａ
のプーリ２７を締付ける力はワイヤ２１ｂのそれよりも
犬である。Thus wire section 21a has twice its speed compared to wire section 21b and therefore wire section 21a
When the slack in t21b is gone, the wire 21a
The force that tightens the pulley 27 is greater than that of the wire 21b.
したがってプーリ２７はワイヤ２１ａによって矢符３３
方向に回転される。Therefore, the pulley 27 is connected to the arrow 33 by the wire 21a.
rotated in the direction
この時ワイヤ部分２１ａと、ワイヤ部分２１ｂの移動プ
ーリ２４からプーリ２１の間に張られた部分とは、原稿
載置台２を第２図の右方に移動するに要する力の丁度半
分をそれぞれ分担する。At this time, the wire portion 21a and the portion of the wire portion 21b stretched between the movable pulley 24 and the pulley 21 each share exactly half of the force required to move the original table 2 to the right in FIG. do.
このとき、ワイヤ部分２１ａがｌだけ移動すると同時に
、ワイヤ部分２１ｂ釦よび原稿載置台２もｌだけ移動す
る。At this time, the wire portion 21a moves by l, and at the same time, the wire portion 21b button and document table 2 also move by l.
すなわちプーリ２７と一体にワイヤ部分２１ａ、２１ｂ
が移動するときには原稿載置台２は第２図の右方に露光
移動するに要する力を等しく分担する。That is, the wire portions 21a and 21b are integrated with the pulley 27.
When the document table 2 moves, the force required for the exposure movement to the right in FIG. 2 is equally shared.
このようにしてワイヤ部分２１ａ、２１ｂのたるみが無
くて原稿載置台２がワイヤ部分２１ａ、２１ｂと等速度
で第２図の右方に露光移動されているとき、感光紙４は
露光部１０を原稿載置台２と同期して移動し、露光が行
なわれる。In this way, when there is no slack in the wire portions 21a and 21b and the original table 2 is being exposed to the right in FIG. It moves in synchronization with the original table 2, and exposure is performed.
なお、プーリ２γとワイヤ部分２１ｂとが摺接して逆方
向にプーリ２γが回転する時には、ワイヤ部分２１ｂに
たるみがあるときであり、実際上はこのたるみはわずか
であるので、ワイヤ部分２１ａがｌだけ移動したにもか
かわらず原稿載置台２がｌ／２しか移動しない間の時間
、すなわちプーリ２７とワイヤ部分２１ｂとが摺接して
いる時間はきわめて短く、実質的にワイヤ部分２１ａの
働きによってワイヤ部分２１ｂは直ちにプーリ２７に摩
擦力によってワイヤ２１ａと一体的に矢符３３の方向に
移動する。Note that when the pulley 2γ and the wire portion 21b come into sliding contact and the pulley 2γ rotates in the opposite direction, there is slack in the wire portion 21b.Actually, this slack is slight, so the wire portion 21a is limp. The time during which the document table 2 moves by only 1/2 even though the original table 2 moves by 1/2, that is, the time during which the pulley 27 and the wire portion 21b are in sliding contact is extremely short, and the wire portion 21a is substantially moved by the wire portion 21a. The portion 21b immediately moves integrally with the wire 21a in the direction of the arrow 33 due to the frictional force of the pulley 27.
プーリ２５゜２９は一体的な同径のプーリであってもよ
い。The pulleys 25 and 29 may be integral pulleys of the same diameter.
ワイヤ部分２１ｂの途中にはテンションプーリ６０を設
けて、ワイヤ部分２１ａ、２１ｂのたるみをなくす。A tension pulley 60 is provided in the middle of the wire portion 21b to eliminate slack in the wire portions 21a and 21b.
このようにすれば、移動当初においてワイヤ部分２１ａ
がｌだけ移動したとき、原稿載置台２がｌ／２しか動か
ない過渡状態が無くなる。By doing this, at the beginning of the movement, the wire portion 21a
There is no longer a transient state in which the original table 2 moves only 1/2 when the document table 2 moves by 1.
第３図を参照して、テンションプーリ６０はレバー６１
の一方端に枢支されて触り、このレバー６１はピン６２
によって機体に枢支されている。Referring to FIG. 3, the tension pulley 60 is connected to the lever 61.
This lever 61 is pivoted on one end of the pin 62.
It is pivoted to the fuselage by.
レバー６１は、その他方端が機体に取付けられた引張り
コイルばね６３に接続されて、弾発的に付勢されてトリ
、それによってテンションプーリ６０はワイヤ部分２１
ｂを緊張する。The lever 61 is connected at its other end to a tension coil spring 63 attached to the fuselage and resiliently biased, thereby causing the tension pulley 60 to move against the wire portion 21.
make b nervous.
レバー６１の他方端にはまた、ばね６３の軸線の延長上
でばね６３とは反対側の位置に油圧ダンパ６４の一端が
ピン６５によって結合される。Also, one end of a hydraulic damper 64 is coupled to the other end of the lever 61 at a position opposite to the spring 63 on the extension of the axis of the spring 63 by a pin 65 .
油圧グンパ６４の他端は機体にピン結合される。The other end of the hydraulic pump 64 is pin-coupled to the fuselage.
油圧ダンパ６４は、在来のように筒状のいわゆるテレス
コピック形であり、伸びるときにも圧縮されるときにも
、内蔵されているオイルがピストンの細孔を通過するこ
とによる流動抵抗を生じる。The hydraulic damper 64 has a conventional cylindrical so-called telescopic shape, and when it is expanded or compressed, the built-in oil passes through the pores of the piston, creating flow resistance.
複写操作時に釦いて、ワイヤ部分２１ｂＫ＠撃的な緊張
力の変動が生じたとき、ばね６３の弾発力によってレバ
ー６１したがってテンションプーリ６０が振動しようと
する。When the button is pressed during a copying operation and a change in tension occurs in the wire portion 21bK@, the lever 61 and therefore the tension pulley 60 tend to vibrate due to the elastic force of the spring 63.
油圧ダンパ６４は、このような衝撃や振動を早く吸収し
て減衰する。The hydraulic damper 64 quickly absorbs and damps such shocks and vibrations.
そのためテンションプーリ６０はワイヤ部分２１ｂに常
時安定してぴったりと当接している。Therefore, the tension pulley 60 is always in stable and tight contact with the wire portion 21b.
したがってワイヤ部分２１ｂのたるみが常に無くなり、
原稿載置台２の移動が安定し、複写画像のブレが無くな
る。Therefore, there is always no slack in the wire portion 21b,
The movement of the document mounting table 2 is stabilized, and blurring of the copied image is eliminated.
第４図は本考案の他の実施例を示す。FIG. 4 shows another embodiment of the invention.
原稿載置台２の複写操作時に露光移動する上手の端部３
４にはワイヤ３５の両端部が固定される。The upper end 3 of the original platen 2 that moves for exposure during copying operations
Both ends of a wire 35 are fixed to the wire 4 .
原稿載置台２の複写操作時に露光移動する方向の下手に
は移動プーリ３６が枢支される。A moving pulley 36 is pivotally supported at the lower end of the document table 2 in the exposure movement direction during a copying operation.
ワイヤ３５は、原稿載置台２の端部３４から駆動ブー＋
Ｊ３７に１回だけ巻回されて移動プーリ３６に至るワイ
ヤ部分３５ａと、移動プーリ３６から駆動プーリ３７に
至って複数回巻回されたワイヤ部分３５ｂと、駆動プー
リ３７から原稿載置台２の端部３４に至る部分３５ｃと
を含む。The wire 35 is connected from the end 34 of the original platen 2 to the drive boot +
A wire portion 35a that is wound only once around J37 and reaches the movable pulley 36, a wire portion 35b that is wound multiple times from the movable pulley 36 to the drive pulley 37, and an end portion of the document placement table 2 from the drive pulley 37. 34.
ワイヤ部分３５ａ、３５ｂにたるみがあるとき、露光移
動当初において駆動プーリ３７が矢符３８に回転すれば
、ワイヤ部分３５ａは駆動プーリ３１の局面を摺接し、
ワイヤ部分３５ｂがｌだけ移動すると、原稿載置台２と
ワイヤ部分３５ａとはｌ／２だけ移動する。When there is slack in the wire portions 35a and 35b, if the drive pulley 37 rotates in the direction of the arrow 38 at the beginning of the exposure movement, the wire portion 35a slides on the curved surface of the drive pulley 31,
When the wire portion 35b moves by l, the document mounting table 2 and the wire portion 35a move by l/2.
ワイヤ部分３５ａ、３５ｂが緊張状態になって、ワイヤ
部分３５ａが駆動ブー１１３７に強固に巻きつくと、ワ
イヤ部分３５ａ 、３５ｂは駆動プーリ３γと一体的に
回転し、原稿載置台２を第４図の右方に同一張力で移動
させる。When the wire portions 35a and 35b are in a tensioned state and the wire portion 35a is tightly wound around the drive boob 1137, the wire portions 35a and 35b rotate together with the drive pulley 3γ, and the document placement table 2 is rotated as shown in FIG. Move it to the right with the same tension.
ワイヤ部分３５ａ。３５ｂが緊張状態となって原稿載置
台２を移動させている期間において、感光紙４が露光部
１０を原稿載置台２とともに同期移動する。Wire portion 35a. During the period in which the original plate 35b is in tension and the original plate 2 is being moved, the photosensitive paper 4 moves the exposure section 10 in synchronization with the original plate 2.
この実施例でも昔たワイヤ部分３５ ａ ｔ ３５ ｂ
におけるたるみを無くすために、前述の如く、テンショ
ンプーリ６０がばねと油圧ダンパとの組合せによって設
けられる。In this example, the old wire portions 35 a t 35 b
In order to eliminate sag, a tension pulley 60 is provided, as described above, by a combination of a spring and a hydraulic damper.
第５図は本考案のさらに他の実施例を示す。FIG. 5 shows yet another embodiment of the present invention.
原稿載置台２の複写操作時に露光移動する方向の上手の
端部４４にはワイヤ３９の両端部が固着され、その反対
側には移動ブーＩＪ４０が枢支される。Both ends of a wire 39 are fixed to the upper end 44 of the document table 2 in the direction of exposure movement during a copying operation, and a movable boolean IJ40 is pivotally supported on the opposite side.
ワイヤ部分３９ａは、原稿載置台２の端部４４からブー
１４１，４２から駆動ブー１ｊ４３から再びプーリ４１
を経て移動プーリ４０に至り、これらのブー１ｊ４０〜
４３に円弧状に巻かれている。The wire portion 39a is connected from the end 44 of the document table 2 to the boot 141, 42, from the drive boot 1j43 to the pulley 41 again.
to the movable pulley 40, and these boots 1j40~
43 is wound in an arc shape.
ワイヤ部分３９ａに続くワイヤ部分３９ｂは、移動ブー
ＩＪ４０からブー１１４１を円弧状に巻かれ、駆動ブー
１１４３に複数回巻回される。The wire portion 39b following the wire portion 39a is wound in an arc shape from the movable boob IJ40 to the boob 1141, and is wound around the driving boob 1143 a plurality of times.
ワイヤ部分３９ｃは、駆動プーリ４３からプーリ４２，
４１を円弧状にとり巻いて、原稿載置台２の端部４４に
至る。The wire portion 39c extends from the drive pulley 43 to the pulley 42,
41 is wrapped around in an arc shape and reaches the end portion 44 of the document mounting table 2.
複写操作時において、駆動プーリ４３が矢符４５の方向
に回転して原稿載置台２を第５図の右方に露光移動する
場合を想定する。Assume that during a copying operation, the driving pulley 43 rotates in the direction of the arrow 45 to move the document table 2 to the right in FIG. 5 for exposure.
ワイヤ部分３９ｂが駆動ブーＩＪ４３によって矢符４６
方向に引張られる場合、ワイヤ部分３９ ａ 、３９
ｂはプーリ４１の周面を滑り、ワイヤ部分３９ｂがｌだ
け第５図の右方へ移動するとき原稿載置台２およびワイ
ヤ部分３９ａは１３／２だけ移動する。The wire portion 39b is connected to the arrow 46 by the driving boo IJ43.
When pulled in the direction, the wire portions 39 a , 39
b slides on the circumferential surface of pulley 41, and when wire portion 39b moves by l to the right in FIG. 5, original table 2 and wire portion 39a move by 13/2.
ワイヤ部分３９ ａ 、３９ ｂにたるみが無くなると
、ワイヤ部分３９ｂはブー１ｊ４１の局所を強固に締め
て回転させ、応じてワイヤ部分３９ａの移動プーリ４０
とプーリ４１との間にある部分はワイヤ部分３９ｂとと
もに原稿載置台２を等しい張力で同時に引張って移動さ
せ、このとき感光紙４を露光端１０に同期走行させて露
光を行なう。When there is no slack in the wire portions 39a and 39b, the wire portion 39b firmly tightens the local part of the boo 1j41 and rotates it, and accordingly the movable pulley 40 of the wire portion 39a
The portion between the wire portion 39b and the pulley 41 simultaneously pulls and moves the original table 2 with equal tension, and at this time, the photosensitive paper 4 is moved synchronously with the exposure end 10 to perform exposure.
ワイヤ部分３９ａ、３９ｂを緊張させるために前述と同
様なテンションプーリ６０が油圧タンパと組合わされて
設けられる。A tension pulley 60 similar to that described above is provided in combination with a hydraulic tamper to tension the wire sections 39a, 39b.
第６図は本考案の他の実施例を示す。FIG. 6 shows another embodiment of the invention.
この実施例では原稿載置台２の複写操作時における露光
移動方向の上手に移動プーリ４８が設けられ、ワイヤ４
９０両端部は原稿載置台２の露光移動方向の下手に固定
される。In this embodiment, a moving pulley 48 is provided on the upper side of the document table 2 in the exposure movement direction during a copying operation, and a wire 4
Both ends of the document mounting table 90 are fixed to the lower side of the document mounting table 2 in the exposure movement direction.
ワイヤ４９の部分４９ａはプーリ５０を円弧状に経て駆
動プーリ５１に円弧状に巻回されてさらに移動プーリ４
８に至り円弧状に巻かれる。The portion 49a of the wire 49 passes through the pulley 50 in an arc shape, is wound around the drive pulley 51 in an arc shape, and is further wound around the movable pulley 4.
8 and is wound into an arc shape.
ワイヤ部分４９ｂは移動プーリ４８から駆動プーリ５１
に至り、駆動プーリ５１に複数回巻回される。The wire portion 49b is connected from the moving pulley 48 to the driving pulley 51.
, and is wound around the drive pulley 51 multiple times.
ワイヤ部分４９ｃは駆動プーリ５１からプーリ５２を約
半円弧だけとり巻いて原稿載置台２の端部に至る。The wire portion 49c extends from the drive pulley 51 to the pulley 52 by approximately a semicircular arc and reaches the end of the document table 2.
複写操作時において、駆動プーリ５１が矢符５３方向に
駆動されると、ワイヤ部分４９ ａ ｔ ４９ ｂにた
るみがある場合には原稿載置台２釦よびワイヤ部分４９
ａはワイヤ部分４９ｂの半分の速度で移動する。During a copying operation, when the drive pulley 51 is driven in the direction of the arrow 53, if there is slack in the wire portions 49 a t 49 b, the document placement table 2 button and the wire portion 49
a moves at half the speed of wire section 49b.
たるみがなくなったとき、ワイヤ部分４９ａは駆動プー
リ５１に圧接し、ワイヤ部分４９ｂとともに一体的に原
稿載置台２を第６図の右方に引張り、このとき感光紙４
を露光部１０に同期走行させて露光を行なう。When the slack is removed, the wire portion 49a comes into pressure contact with the driving pulley 51, and together with the wire portion 49b, pulls the original table 2 to the right in FIG. 6, and at this time, the photosensitive paper 4
is caused to run in synchronization with the exposure section 10 to perform exposure.
ワイヤ部分４９ａは前述と同様に油圧ダンパと組合わさ
れたテンションプーリ６０によって緊張される。The wire section 49a is tensioned by a tension pulley 60 in combination with a hydraulic damper as before.
ブー’Ｊ５０，５２は一体的な同径のプーリであっても
よい。Boo'J50, 52 may be integral pulleys with the same diameter.
上述の実施例では原稿載置台２がワイヤによって移動さ
れたけれども、本考案は、原稿載置台が静止し、原稿像
を感光紙上に結ｒ象させるための光学装置が移動する静
電式複写機に於いても実施され得る。Although in the above-described embodiment, the original table 2 was moved by a wire, the present invention is an electrostatic copying machine in which the original table is stationary and an optical device for forming an image of the original on photosensitive paper is moved. It can also be implemented in
上述の各実施例において、感光体４は、ワイヤ部分２１
ａ、２１ｂ（第２図参照） ； ３５ ａ 。In each of the embodiments described above, the photoreceptor 4 has a wire portion 21
a, 21b (see Figure 2); 35 a.
３５ｂ（第４図参照） ； ３９ ａ ＋ ３９ ｂ
（第５図参照） ； ４９ ａ ｔ ４９ ｂ （第６
図参照）が露光移動時に緊張状態になった後に、感光体
同期移動手段は、感光体４を露光部１０に給送して原稿
載置台２と同一速度で同期移動させる。35b (see Figure 4); 39 a + 39 b
(See Figure 5); 49 a t 49 b (6th
After the photoreceptor (see figure) becomes tense during exposure movement, the photoreceptor synchronous movement means feeds the photoreceptor 4 to the exposure section 10 and synchronously moves the photoreceptor 4 at the same speed as the original table 2.
これらのワイヤ部分２１ａ ｔ ２１ｂ ；３５ａ 、
３５ｂ ；３９ａ。These wire portions 21a t 21b; 35a,
35b; 39a.
３９ｂ；４９ａ、４９ｂに、テンションプーリ６０によ
って初期張力が与えられている場合には。39b; if initial tension is applied to 49a and 49b by the tension pulley 60;
ワイヤの走行始動と同時に、感光体同期移動手段は感光
体４を露光部に給送し、露光が行なわれる事になる。Simultaneously with the start of running of the wire, the photoreceptor synchronous movement means feeds the photoreceptor 4 to the exposure section, and exposure is performed.
ワイヤ部分２１ｃ、３５ｃ、３９ｃ。４９ｃにテンショ
ンプーリを設けてもよい。Wire portions 21c, 35c, 39c. A tension pulley may be provided at 49c.
本考案のさらに他の実施例として、同心のばねが内蔵さ
れた構造を有する油圧ダンパが用いられてもよい。In yet another embodiment of the present invention, a hydraulic damper having a built-in concentric spring structure may be used.
この場合、第３図のばね６３は省略される。In this case, the spring 63 in FIG. 3 is omitted.
油圧ダンパに代って固体間の摺動摩擦を利用したダンパ
を用いてもよい。A damper that utilizes sliding friction between solid bodies may be used instead of a hydraulic damper.
本考案は上述のワイヤの巻掛は構造に限定することは意
図してお・らず、他の構造を有するワイヤ駆動機構に関
連しても実施され得る。The present invention is not intended to be limited to the wire winding structure described above, and may be implemented in conjunction with wire drive mechanisms having other structures.
以上のように本考案によれば、原稿載置台捷たは光学装
置を駆動するためのワイヤにテンションプーリを巻掛け
、そのテンションプーリをばね付勢するだけでなく、ダ
ンパによって衝撃力も・よび振動を速やかに減衰させる
ようにしたので、テンションプーリがワイヤに常時ぴっ
たりと当接しており、したがってワイヤが振動したりた
るむおそれはなく、ワイヤの緊張力が急激に変動するこ
とが防がれる。As described above, according to the present invention, a tension pulley is wound around the wire for driving the original table holder or the optical device, and the tension pulley is not only biased by the spring, but also absorbs impact force and vibration by the damper. Since the tension is quickly damped, the tension pulley is always in tight contact with the wire, so there is no risk of the wire vibrating or sagging, and the tension of the wire is prevented from fluctuating rapidly.
そのため原稿載置台または光学装置の移動速度が安定化
され、原稿画像のブレが生ぜず、鮮明になる。Therefore, the moving speed of the document table or the optical device is stabilized, and the document image becomes clear without blurring.
特に原稿載置台または光学装置の端部から移動プーリを
介して１駆動プーリに至る１でのワイヤ部分が露光のた
めに引張られるとき、ばねとダンパとの働きによってそ
のワイヤ部分のたるみがなくなっているので、ワイヤと
原稿載置台または光学装置との露光のための円滑な走行
が走行開始直後から可能になる。In particular, when the wire section 1 extending from the end of the document table or optical device via the moving pulley to the drive pulley 1 is pulled for exposure, the slack in the wire section is eliminated by the action of the spring and damper. Therefore, smooth running between the wire and the document table or the optical device for exposure is possible immediately after the start of running.
したがって原稿画像のブレを生じることなく露光が行な
われる。Therefore, exposure is performed without blurring the original image.
第１図は本考案が実施され得る静電式複写機の断面図、
第２図は本考案の一実施飼の原稿載置台２の駆動機構を
示す斜視図、第３図は第２図示のワイヤ部分２Ｔｂを緊
張するために設けられたテンションプーリ６０を含む構
造を示す簡略化した図、第４図ないし第６図は本考案の
他の実施例をそれぞれ示す原稿載置台２の１駆動機構の
斜視図である。
２・・・原稿載置台、４・・・感光紙、２６ 、３７
。FIG. 1 is a sectional view of an electrostatic copying machine in which the present invention can be implemented;
FIG. 2 is a perspective view showing the driving mechanism of the document mounting table 2 in one embodiment of the present invention, and FIG. 3 shows a structure including a tension pulley 60 provided for tensioning the wire portion 2Tb shown in FIG. The simplified drawings, FIGS. 4 to 6, are perspective views of one drive mechanism of the document table 2, respectively, showing other embodiments of the present invention. 2... Original table, 4... Photosensitive paper, 26, 37
.
Claims (5)
させて移動中の感光体上Ｖ（原稿の像をスリット露光す
る型式の静電式複写機のワイヤ駆動装置ＶＬ ％１いて
、ワイヤの両端部を原稿載置台筐たは光学装置の移動方
向の一端部に固定し、原稿載置台ｌたは光学装置の移動
方向の他端部には移動プーリを枢支し、そのワイヤを駆
動プーリに複数回巻き掛け、さらに移動プーリに円弧状
に巻き掛け、原稿載置台筐たは光学装置の移動方向の前
記一端部から移動プーリを介して駆動プーリに至る１で
のワイヤ部分が駆動プーリの回転によって引張られて原
稿載置台または光学装置の露光のための移動が行なわれ
るようにし、そのワイヤ部分の途中をテンションプーリ
に円弧状に巻き掛け、このテンションプーリはワイヤが
緊張するように弾発的にばねによって付勢され。 テンションプーリの衝撃あ・よび振動をダンパによって
吸収することを特徴とする静電式複写機のワイヤ駆動装
置。(1) VL on the photoreceptor while the original table or optical device is being moved by wire (Wire drive device VL of an electrostatic copying machine that exposes the original image to slit light) is fixed to one end of the document tray housing or the optical device in the direction of movement, a moving pulley is pivotally supported at the other end of the document tray or the optical device in the direction of movement, and the wires are connected to multiple drive pulleys. The wire is wound around the movable pulley in an arc shape, and the wire portion 1 extending from the one end in the moving direction of the document tray case or the optical device to the drive pulley via the movable pulley is caused by the rotation of the drive pulley. The wire section is pulled so that the document table or the optical device is moved for exposure, and the part of the wire is wound around a tension pulley in an arc shape, and the tension pulley is elastically tensioned so that the wire is tensioned. A wire drive device for an electrostatic copying machine characterized by being biased by a spring and absorbing shock and vibration of a tension pulley by a damper.
端を固着し、該ワイヤは第１番目のプーリ２９と第２番
目のプーリ２γを経て原稿載置台の露光移動方向の上手
側に設けられた第３番目の移動プーリ２４に円弧上に巻
掛けられ、更にプーリ２７を経て駆動プーリ２６に、複
数回巻回され、第４番目のプーリ２５を経て原稿載置台
２の露光移動方向の下手側に固定され、前記テンション
プーリ６０は第１番目のプーリ２９から第２番目のプー
リ２７に至る第１番目のプーリ２９に近い位置に設けた
ことを特徴とする実用新案登録請求の範囲第１項記載の
静電式複写機のワイヤ駆動装置。(2) One end of the wire is fixed to the lower side of the document placement table in the exposure movement direction, and the wire passes through the first pulley 29 and the second pulley 2γ to the upper side of the document placement table in the exposure movement direction. It is wound on a circular arc around a third movable pulley 24 provided, and is further wound around a driving pulley 26 multiple times via a pulley 27, and then passed through a fourth pulley 25 in the exposure movement direction of the document table 2. Utility model registration claims, characterized in that the tension pulley 60 is provided at a position close to the first pulley 29 ranging from the first pulley 29 to the second pulley 27. 2. A wire drive device for an electrostatic copying machine according to claim 1.
一端を固着し、該ワイヤは駆動プーリ３Ｔに巻回され、
前記原稿載置台２の露光移動方向の下手側に設けられた
移動プーリ３６に円弧状に巻掛けられて、更に駆動プー
リ３７に複数回巻回され原稿載置台２の露光移動上手側
に固着され、前記テンションプーリ６０は駆動プーリ３
７から移動プーリ３６の間に至るワイヤ部分の移動プー
リ３６に近い位置に設けた実用新案登録請求の範囲第１
項記載の静電式複写機のワイヤ駆動装置。(3) One end of the wire is fixed to the upper side of the document mounting table 2 in the exposure movement direction, and the wire is wound around the drive pulley 3T,
It is wound in an arc shape around a movable pulley 36 provided on the lower side of the exposure movement direction of the original document mounting table 2, and is further wound around a drive pulley 37 multiple times and fixed to the upper side of the exposure movement direction of the original document mounting table 2. , the tension pulley 60 is the drive pulley 3
Utility model registration claim 1, which is provided at a position close to the movable pulley 36 in the wire portion extending between the movable pulley 36 and the movable pulley 36
A wire drive device for an electrostatic copying machine as described in 1.
一端を固着し、該ワイヤは第１番目のプーリ４１に巻掛
けられ、次いで第２番目のプーリ４２を経て駆動プーリ
４３に巻掛けられ、更にプーリ４１に巻掛られて原稿載
置台２の露光移動方向の下手側に設けられた移動プーリ
４０に円弧状に巻掛されて折返し、プーリ４１乃至駆動
プーリ４３に複数回巻回されプーリ４２、プーリ４１の
順に巻掛られて、原稿載置台２の露光移動方向の上手側
に固着され、前記テンションプーリ６０はプーリ４１か
らプーリ４０に至る間のワイヤ部分のプーリ４０に近い
位置に設けた実用新案登録請求の範囲第１項記載の静電
式複写機のワイヤ駆動装置。(4) One end of the wire is fixed to the upper side of the document placement table 2 in the exposure movement direction, and the wire is wound around the first pulley 41, then the second pulley 42, and then around the drive pulley 43. It is then wrapped around a pulley 41, wrapped around a movable pulley 40 provided on the lower side of the exposure movement direction of the document mounting table 2 in an arc shape, and then turned back and wound around the pulleys 41 to drive pulleys 43 multiple times. The tension pulley 60 is wound around the pulley 42 and then the pulley 41 in this order and is fixed to the upper side of the document mounting table 2 in the exposure movement direction, and the tension pulley 60 is located near the pulley 40 in the wire section between the pulley 41 and the pulley 40. A wire drive device for an electrostatic copying machine according to claim 1, which is provided in a utility model.
ヤの一端を固着し、該ワイヤは第１番目のプーリ５０に
巻掛られ、駆動プーリ５１を経て原稿載置台２の露光移
動する方向の上手側に設けられたプーリ４８に円弧状に
巻掛られ、鵠に駆動プーリ５１に複数回巻回されてプー
リ５２を経て原稿載置台２の露光移動方向の下手側に固
着され、前記テンションプーリ６０は第１番目のプーリ
５０から駆動プーリ５１に至る間のワイヤ部分のプーリ
５０に近い位置に設けた実用新案登録請求の範囲第１項
記載の静電式複写機のワイヤ駆動装置。(5) One end of the wire is fixed to the lower side of the document placement table 2 in the direction of exposure movement, the wire is wound around the first pulley 50, and the document placement table 2 is moved for exposure via the drive pulley 51. It is wound in an arc shape around a pulley 48 provided on the upper side in the direction, and is wound around a drive pulley 51 multiple times, passes through a pulley 52, and is fixed to the lower side of the document table 2 in the exposure movement direction. The wire drive device for an electrostatic copying machine according to claim 1, wherein the tension pulley 60 is provided at a position close to the pulley 50 in the wire portion between the first pulley 50 and the drive pulley 51.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977128092U JPS5825375Y2 (en) | 1977-09-21 | 1977-09-21 | Electrostatic copying machine wire drive device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977128092U JPS5825375Y2 (en) | 1977-09-21 | 1977-09-21 | Electrostatic copying machine wire drive device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5453446U JPS5453446U (en) | 1979-04-13 |
| JPS5825375Y2 true JPS5825375Y2 (en) | 1983-05-31 |
Family
ID=29091453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1977128092U Expired JPS5825375Y2 (en) | 1977-09-21 | 1977-09-21 | Electrostatic copying machine wire drive device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5825375Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4934932U (en) * | 1972-06-30 | 1974-03-27 |
-
1977
- 1977-09-21 JP JP1977128092U patent/JPS5825375Y2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4934932U (en) * | 1972-06-30 | 1974-03-27 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5453446U (en) | 1979-04-13 |
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