JPS6312120Y2 - - Google Patents
Info
- Publication number
- JPS6312120Y2 JPS6312120Y2 JP7558782U JP7558782U JPS6312120Y2 JP S6312120 Y2 JPS6312120 Y2 JP S6312120Y2 JP 7558782 U JP7558782 U JP 7558782U JP 7558782 U JP7558782 U JP 7558782U JP S6312120 Y2 JPS6312120 Y2 JP S6312120Y2
- Authority
- JP
- Japan
- Prior art keywords
- copy paper
- conveyance
- air suction
- copying machine
- roller
- 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
- 238000012546 transfer Methods 0.000 description 19
- 108091008695 photoreceptors Proteins 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Description
【考案の詳細な説明】
本考案は、複写機に関し、特に複写紙の搬送方
向に直角な同一軸線まわりに回転駆動される複数
の搬送ローラと、各搬送ローラ相互間で上方に向
けて開口した空気吸引空間を形成する空気吸引箱
とを有する複写紙搬送装置を備える複写機に関す
る。[Detailed Description of the Invention] The present invention relates to a copying machine, and in particular includes a plurality of conveyance rollers that are rotationally driven around the same axis perpendicular to the direction in which copy paper is conveyed, and a mechanism that opens upward between each conveyance roller. The present invention relates to a copying machine equipped with a copy paper conveying device having an air suction box forming an air suction space.
従来からの静電複写機においては、熱ローラ定
着や複写紙上のトナー像を輻射加熱により溶融定
着するオーブンヒート定着などの熱定着装置の温
度が感光ドラムに悪影響を及ぼすのを極力防止す
るために、転写領域から定着装置までの距離は比
較的大に選ばれている。しかも全面転写方式の複
写機においては、転写領域から定着装置までの間
において複写紙の両面に接触する搬送ローラなど
の搬送手段を設けることはできない。そのため、
前記感光ドラムから熱定着装置までの距離よりも
短かいサイズの複写紙によつて複写を行うことが
困難であり、たとえばJISA6サイズなどの複写紙
による複写を行うことはできなかつた。 In conventional electrostatic copying machines, in order to prevent the temperature of thermal fixing devices such as heat roller fixing and oven heat fixing, which melts and fixes the toner image on the copy paper using radiation heating, from adversely affecting the photosensitive drum. , the distance from the transfer area to the fixing device is selected to be relatively large. Furthermore, in a full-surface transfer type copying machine, it is not possible to provide a conveying means such as a conveying roller that contacts both sides of the copy paper between the transfer area and the fixing device. Therefore,
It is difficult to make copies using copy paper of a size shorter than the distance from the photosensitive drum to the heat fixing device, and it has not been possible to make copies using copy paper of JISA6 size, for example.
この問題を解決するための先行技術としては、
熱定着装置と転写領域との間に複写紙の転写面と
反対側の面に接触するベルトによつて複写紙を搬
送する技術がある。しかしこのような先行技術で
は、少なくともベルト駆動用のローラ2本とテン
シヨンローラ1本の計3本のローラと、複数のベ
ルトが必要であり、さらに複写紙を搬送ベルトに
確実に載せるための吸引ダクト等の装置が必要で
あつて、構造が複雑である。 Prior art to solve this problem is:
There is a technique in which copy paper is conveyed between a thermal fixing device and a transfer area using a belt that contacts the surface of the copy paper opposite to the transfer surface. However, such prior art requires at least three rollers (two belt-driving rollers and one tension roller) and multiple belts, and also requires a number of belts to ensure that the copy paper is placed on the conveyor belt. It requires devices such as suction ducts and has a complicated structure.
そこで、本件出願人は実願昭56−59127(実開昭
57−170140号)において、複写紙の搬送方向に直
角な同一軸線まわりに回転駆動される複数の搬送
ローラと、各搬送ローラ相互間で上方に向けて開
口した空気吸引空間を形成する空気吸引箱とを含
む複写機の複写紙搬送装置を提案した。この簡単
な構造の複写紙搬送装置によれば、複写紙は空気
吸引空間に吸引されて各搬送ローラに摺接して搬
送される。したがつて比較的短かい複写紙であつ
たとしても割実に搬送されることになる。ところ
が葉書などの比較的厚みがあつて腰の強い複写紙
の場合には、空気吸引空間に充分に吸引されず、
したがつて各搬送ローラに摺接されず、搬送が困
難となることがある。 Therefore, the present applicant filed Utility Application No. 56-59127 (Utility Application No.
No. 57-170140), a plurality of conveyance rollers rotated around the same axis perpendicular to the conveyance direction of copy paper, and an air suction box that forms an air suction space that opens upward between each conveyance roller. We have proposed a copy paper conveying device for a copying machine that includes: According to this simple structure of the copy paper conveyance device, the copy paper is sucked into the air suction space and is conveyed in sliding contact with each conveyance roller. Therefore, even if the copy paper is relatively short, it will be transported at a relatively low cost. However, in the case of relatively thick and stiff copy paper such as postcards, the air is not sucked into the air suction space sufficiently.
Therefore, it may not come into sliding contact with each conveyance roller, making conveyance difficult.
本考案は、上述の技術的課題を解決し、比較的
短かくかつ厚みのある複写紙を確実に搬送しうる
ようにした複写機を提供することを目的とする。 SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned technical problems and provide a copying machine that can reliably convey relatively short and thick copy sheets.
以下、図面によつて本考案の実施例を説明す
る。第1図は本考案の一実施例の転写式静電複写
機の前面側から見た簡略化した縦断面図である。
機体1のほぼ中央部にはドラム2の外周面に感光
体3を設けて成る感光ドラム4が回転自在に装着
される。感光ドラム4の周囲には、矢符5で示す
回転方向に沿つて順次に、感光体3を帯電させる
帯電用コロナ放電器6、感光体3上に形成された
静電潜像を顕像化してトナー像にする現像装置
7、感光体3上のトナー像を複写紙に転写するた
めの転写用コロナ放電器8、複写紙を感光体3か
ら分離するための分離用コロナ放電器9、および
転写工程後に感光体3上に残留したトナーをクリ
ーニングするクリーニング装置10が配置されて
いる。 Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a simplified vertical cross-sectional view of a transfer type electrostatic copying machine according to an embodiment of the present invention, viewed from the front side.
A photosensitive drum 4, which has a photosensitive member 3 provided on the outer peripheral surface of a drum 2, is rotatably mounted approximately in the center of the body 1. Around the photosensitive drum 4, a charging corona discharger 6 for charging the photosensitive member 3 and a charging corona discharger 6 for visualizing the electrostatic latent image formed on the photosensitive member 3 are arranged sequentially along the rotational direction indicated by an arrow 5. a developing device 7 to form a toner image on the photoreceptor 3; a transfer corona discharger 8 for transferring the toner image on the photoreceptor 3 onto copy paper; a separation corona discharger 9 for separating the copy paper from the photoreceptor 3; A cleaning device 10 is arranged to clean toner remaining on the photoreceptor 3 after the transfer process.
機体1の上部には原稿11を水平に載置して矢
符のごとく往復移動する原稿載置台12が設けら
れ、その原稿載置台12上の原稿11は原稿抑え
部材13によつて抑えられる。感光ドラム4の上
方には、原稿11の像を帯電用コロナ放電器6と
現像装置7との間で感光体3に破線矢符のごとく
照射するための露光装置14が設けられる。露光
装置14において、原稿載置台12を介して原稿
11に光を照射するための投光手段15は、露光
ランプ16、反射板17および副反射板18を含
む。この投光手段15から原稿載置台12上の原
稿11に照射された光は収束性光伝送体19を介
して感光体3に照射されて原稿の像を結像し、感
光体3上に静電潜像を形成する。 At the top of the body 1, there is provided a document mounting table 12 on which a document 11 is placed horizontally and which moves back and forth like an arrow.The document 11 on the document placing table 12 is held down by a document holding member 13. An exposure device 14 is provided above the photosensitive drum 4 to irradiate the image of the original 11 onto the photosensitive member 3 between the charging corona discharger 6 and the developing device 7 as shown by the broken line arrow. In the exposure device 14 , a light projection unit 15 for irradiating light onto the original 11 via the original mounting table 12 includes an exposure lamp 16 , a reflector 17 , and a sub-reflector 18 . The light irradiated from the light projecting means 15 onto the original 11 on the original mounting table 12 is irradiated onto the photoreceptor 3 via the convergent light transmitter 19 to form an image of the original, and a static image is placed on the photoreceptor 3. Forms an electrolatent image.
二点鎖線で示す複写紙搬送路20に沿つて給紙
カセツト21に積層収納されている複写紙は、給
紙ローラ22によつて給紙カセツト21から給紙
される。複写紙は上下一対の案内板23,24を
経て一対の送込み搬送ローラ25,26によつて
搬送される。上下一対の案内板27,28を介し
て転写領域29に送り込まれた複写紙は転写用コ
ロナ放電器8に対向した感光ドラム4に密接され
る。転写工程後のの複写紙は分離用コロナ放電器
9によつて感光ドラム4から分離され、複写紙搬
送装置30によつて一対の熱定着ローラ31,3
2を備える熱定着装置33に送り込まれる。この
熱定着装置33において複写紙上のトナー像が定
着される。定着工程後の複写紙は一対の排出ロー
ラ34,35によつてコピー受け皿36上に排出
される。 Copy sheets stacked and stored in a paper feed cassette 21 along a copy paper transport path 20 indicated by a two-dot chain line are fed from the paper feed cassette 21 by a paper feed roller 22. The copy paper passes through a pair of upper and lower guide plates 23 and 24 and is conveyed by a pair of feed conveyance rollers 25 and 26. The copy paper fed into the transfer area 29 via the pair of upper and lower guide plates 27, 28 is brought into close contact with the photosensitive drum 4 facing the transfer corona discharger 8. After the transfer process, the copy paper is separated from the photosensitive drum 4 by a separating corona discharger 9, and transferred to a pair of heat fixing rollers 31, 3 by a copy paper conveying device 30.
2 is sent to a heat fixing device 33 having a heat fixing device 33. This thermal fixing device 33 fixes the toner image on the copy paper. The copy paper after the fixing process is discharged onto a copy tray 36 by a pair of discharge rollers 34 and 35.
現像装置7にはトナーとキヤリアとから成る2
成分系現像剤が貯留される。この2成分系現像剤
のうち前記トナーは現像処理に応じて消費され、
そのトナーの消費量に応じてトナー補給装置37
からトナーが補給される。 The developing device 7 has two components including toner and carrier.
Component-based developer is stored. Of this two-component developer, the toner is consumed according to development processing,
The toner replenishing device 37
Toner is replenished from
第2図は複写紙搬送装置30の一部を示す斜視
図である。複写紙搬送装置30は、複写紙搬送路
20に沿つて感光ドラム4から熱定着装置33の
間に設けられ、その枠体42には転写用コロナ放
電器8および分離用コロナ放電器9が一体的に設
けられる。枠体42の両側部において複写紙搬送
路20に沿つて分離用コロナ放電器9よりも下流
側には支持突部43,44が設けられており、こ
れらの支持突部43,44によつて感光ドラム4
と平行な軸像を有する回転軸45が回転自在に軸
支される。回転軸45には、その軸線方向に間隔
をあけた位置で、摩擦係数が大なる材料たとえば
スポンジやゴムなどから成る複数の搬送ローラ4
6が固定される。回転軸45の支持突起44から
突出した端部にはスプロケツト47が固定され
る。このスプロケツト47には図示しない駆動源
からの駆動を伝達するためのチエン48が巻き掛
けられており、回転軸45および搬送ローラ46
は前記駆動源によつて常時回転駆動される。 FIG. 2 is a perspective view showing a portion of the copy paper conveyance device 30. The copy paper conveyance device 30 is provided between the photosensitive drum 4 and the heat fixing device 33 along the copy paper conveyance path 20, and a transfer corona discharger 8 and a separation corona discharger 9 are integrated into the frame body 42. It is set up as follows. Support protrusions 43 and 44 are provided on both sides of the frame body 42 on the downstream side of the separation corona discharger 9 along the copy paper transport path 20, and these support protrusions 43 and 44 Photosensitive drum 4
A rotating shaft 45 having an axial image parallel to is rotatably supported. A plurality of conveyor rollers 4 made of a material with a large friction coefficient, such as sponge or rubber, are mounted on the rotating shaft 45 at intervals in the axial direction.
6 is fixed. A sprocket 47 is fixed to the end of the rotating shaft 45 that protrudes from the support projection 44. A chain 48 for transmitting drive from a drive source (not shown) is wound around this sprocket 47, and a chain 48 is wound around the sprocket 47 to transmit a drive from a drive source (not shown).
is constantly rotationally driven by the drive source.
なお搬送ローラ46、ならびに分離用コロナ放
電器9および転写用コロナ放電器8の位置関係
は、複写紙の後端が感光ドラム4から分離された
とき搬送ローラ46上に載つている複写紙がその
搬送ローラ46から転写領域29側において前記
分離用コロナ放電器9および転写用コロナ放電器
8に当らないような位置に選ばれている。また送
込み搬送ローラ25,26および搬送ローラ46
間の距離l1は複写すべき最小のサイズたとえば
葉書よりも短かく選ばれる。また搬送ローラ46
および熱定着装置33間の距離l2は前記葉書よ
りも短かく選ばれる。 The positional relationship between the conveyance roller 46, the separation corona discharger 9, and the transfer corona discharger 8 is such that when the trailing edge of the copy paper is separated from the photosensitive drum 4, the copy paper placed on the conveyance roller 46 is The position is selected so that it does not hit the separation corona discharger 9 and the transfer corona discharger 8 on the transfer area 29 side from the conveyance roller 46 . In addition, the feed conveyance rollers 25, 26 and the conveyance roller 46
The distance l1 between them is selected to be shorter than the minimum size to be copied, for example a postcard. Also, the conveyance roller 46
The distance l2 between the heat fixing device 33 and the heat fixing device 33 is selected to be shorter than that of the postcard.
搬送ローラ46よりも下流側において枠体42
は上方に屈曲して水平に延び平板状の案内板49
を構成する。この案内板49の前記上方への立上
がり部50において各搬送ローラ46相互間に対
応する部分には開口部51が形成される。 The frame body 42 on the downstream side of the conveyance roller 46
is a flat guide plate 49 that is bent upward and extends horizontally.
Configure. An opening 51 is formed in the upwardly rising portion 50 of the guide plate 49 at a portion corresponding to the space between the conveying rollers 46 .
案内板49の下方には第3図に示すような上部
が開放した空気吸引箱52が配置される。この空
気吸引箱52はねじ部材53,54によつて枠体
42に一体的に固定され、それによつて空気吸引
箱52および案内板49によつて規定された空気
吸引空間55が形成される。空気吸引箱52の搬
送ローラ46寄りの側部には、前記開口部51か
ら各搬送ローラ46間に突出した空気吸引部59
がそれぞれ設けられる。これらの空気吸引部59
は、空気吸引箱52の底部から斜め上方に延びる
底板56と、その底板56の両側部に固着された
側板57,58とから成る。これらの空気吸引部
59は、各搬送ローラ46相互間で上方に向けて
開口する。なお両側板57,58の搬送ローラ4
6寄りの上端部は、搬送ローラ46の上面よりも
下方に位置して彎曲された案内部60を形成す
る。案内板49の各空気吸引部59に対応する部
分は、各側板57,58の案内部60近くまで延
設される。 An air suction box 52 with an open top as shown in FIG. 3 is arranged below the guide plate 49. This air suction box 52 is integrally fixed to the frame body 42 by screw members 53 and 54, thereby forming an air suction space 55 defined by the air suction box 52 and the guide plate 49. On the side of the air suction box 52 near the transport roller 46, there is an air suction section 59 that protrudes from the opening 51 between each transport roller 46.
are provided respectively. These air suction parts 59
consists of a bottom plate 56 extending obliquely upward from the bottom of the air suction box 52, and side plates 57, 58 fixed to both sides of the bottom plate 56. These air suction portions 59 open upward between each conveyance roller 46 . Note that the conveyance rollers 4 on both side plates 57 and 58
The upper end portion closer to 6 forms a curved guide portion 60 located below the upper surface of the conveyance roller 46 . A portion of the guide plate 49 corresponding to each air suction portion 59 extends close to the guide portion 60 of each side plate 57, 58.
機体1の後方側(第2図の右方側)において、
空気吸引箱52および案内板49は、ダクト61
を構成する。このダクト61内に形成される空気
吸引通路62は、後述の誘引送風機63との接続
構造上空気吸引空間55よりも幅dが小に形成さ
れており、その分だけ深さhが大とされる。 On the rear side of the aircraft 1 (right side in Figure 2),
The air suction box 52 and the guide plate 49 are connected to the duct 61
Configure. The air suction passage 62 formed in this duct 61 has a width d smaller than that of the air suction space 55 due to the connection structure with an induced blower 63, which will be described later, and a depth h correspondingly larger. Ru.
第4図を参照してダクト61の端部は、機体1
の後方側の側板64に形成された開口部65から
突出されており、機体1に固定された誘引送風機
63に接続される。誘引送風機63の吸引部66
の端部にはシールのためのスポンジ部材67が固
着されており、このスプンジ部材67にダクト6
1が当接することによつて吸引部66およびダク
ト61が気密的に接続される。 Referring to FIG. 4, the end of the duct 61 is connected to the fuselage 1.
It protrudes from an opening 65 formed in a side plate 64 on the rear side of the fuselage 1, and is connected to an induced blower 63 fixed to the fuselage 1. Suction part 66 of induced blower 63
A sponge member 67 for sealing is fixed to the end of the duct 6.
1 are in contact with each other, the suction portion 66 and the duct 61 are airtightly connected.
このような複写紙搬送装置30において、誘引
送風機63は常時駆動され、搬送ローラ46は常
時回転されている。そのため空気吸引部59から
は空気吸引空間55に向けて空気が吸引されてい
る。したがつて分離用コロナ放電器9の働きによ
つて感光ドラム4から分離された複写紙は、空気
吸引部59に吸引されて搬送ローラ46に密着す
る。搬送ローラ46を構成する材料は摩擦係数が
大であるので、複写紙は搬送ローラ46の回転に
応じて確実に搬送されていき、案内板49を経て
熱定着装置33に搬送される。 In such a copy paper conveyance device 30, the induced fan 63 is constantly driven, and the conveyance roller 46 is constantly rotated. Therefore, air is sucked from the air suction section 59 toward the air suction space 55. Therefore, the copy paper separated from the photosensitive drum 4 by the action of the separating corona discharger 9 is attracted by the air suction section 59 and brought into close contact with the conveying roller 46. Since the material constituting the conveyance roller 46 has a large coefficient of friction, the copy paper is reliably conveyed as the conveyance roller 46 rotates, and is conveyed to the thermal fixing device 33 via the guide plate 49.
なお、搬送ローラ46の周速度U1は感光ドラ
ム4の周速度U2よりもたとえば50〜200m/h程
度大に選ばれている。そうすることによつて、複
写紙が感光ドラム4から分離した後の搬送速度が
大となり、複写紙が熱定着装置33の熱定着ロー
ラ31,32間に確実に挾持される。また感光ド
ラム4の周速度U2は、熱定着装置33における
熱定着ローラ31,32の周速度U3と等しいか
あるいは大とされる。そうすることによつて熱定
着ローラ31,32に達したときにまだ感光ドラ
ム4に密接している複写紙が両熱定着ローラ3
1,32に引ぱられることにより転写像がずれて
しまうことが防止される。ただし周速度U2=U3
とした場合には感光ドラム4における分離位置か
ら熱定着装置33までの距離l3を比較的大にし
て搬送ローラ46から熱定着装置33までの間に
おいて複写紙に撓みが生じるようにする。 Note that the circumferential speed U1 of the conveying roller 46 is selected to be greater than the circumferential speed U2 of the photosensitive drum 4 by, for example, about 50 to 200 m/h. By doing so, the conveyance speed of the copy paper after it is separated from the photosensitive drum 4 is increased, and the copy paper is reliably held between the heat fixing rollers 31 and 32 of the heat fixing device 33. Further, the circumferential speed U2 of the photosensitive drum 4 is equal to or greater than the circumferential speed U3 of the heat fixing rollers 31 and 32 in the heat fixing device 33. By doing so, when the copy paper reaches the heat fixing rollers 31 and 32, the copy paper that is still in close contact with the photosensitive drum 4 is removed from both heat fixing rollers 31 and 32.
1 and 32, the transferred image is prevented from shifting. However, peripheral speed U2=U3
In this case, the distance l3 from the separation position on the photosensitive drum 4 to the heat fixing device 33 is made relatively large so that the copy paper is bent between the conveying roller 46 and the heat fixing device 33.
第5図は複写紙搬送装置30付近の簡略化した
平面図である。本考案に従えば、複写紙搬送装置
30において搬送方向69に沿う搬送ローラの直
下流側であつてかつ搬送ローラ46の軸線に沿う
一方端寄りには、搬送ローラ46と平行な回転軸
線を有する回転部材70が挿脱自在に設けられ
る。この回転部材70は、半径方向外方に向うに
つれて細狭まりとなる複数の突起71を、円周方
向に等間隔ゆあけて備え、挿脱手段72における
支持部材78によつて軸支される。 FIG. 5 is a simplified plan view of the vicinity of the copy paper conveying device 30. According to the present invention, the copy paper conveying device 30 has a rotation axis parallel to the conveying roller 46 immediately downstream of the conveying roller along the conveying direction 69 and near one end along the axis of the conveying roller 46. A rotating member 70 is provided so as to be freely insertable and removable. The rotating member 70 includes a plurality of protrusions 71 that become narrower toward the outside in the radial direction, spaced at equal intervals in the circumferential direction, and is pivotally supported by a support member 78 in the insertion/removal means 72 .
第6図は第5図における挿脱手段72の底面図
である。挿脱手段72は、搬送方向69に直角で
かつ搬送ローラ46の軸線と平行な断面が略L字
状の支持板74を備える。この支持板74は、機
体1の前方側の側壁75に固定的に支持される固
定部分74aと、その固定部分74aの上端部か
ら機体1の内方に向けて水平に延びる支持部分7
4bとを備える。揺動部材73は水平面内で略L
字状に構成されており、その屈曲部は鉛直軸線を
有するピン76で枢支される。揺動部材73の一
端部には支持部材78が前記ピン76と平行なピ
ン79を介して連結される。支持部材78は、搬
送方向69と直角な幅方向に向けて延び、機体1
の内方寄りの一端部には回転部材70が軸支され
る。また支持部材78の他端部には、ピン79と
平行なピン80が突設されており、これらのピン
79,80は支持部分74bに形成された案内孔
81に係止される。この案内孔81は前記幅方向
に沿つて長く形成されており、したがつて支持部
材78は、前記幅方向に沿つて移動自在である。 FIG. 6 is a bottom view of the insertion/removal means 72 in FIG. 5. The insertion/removal means 72 includes a support plate 74 having a substantially L-shaped cross section that is perpendicular to the conveyance direction 69 and parallel to the axis of the conveyance roller 46 . This support plate 74 includes a fixed portion 74a that is fixedly supported on the front side wall 75 of the fuselage 1, and a support portion 7 that extends horizontally inward from the upper end of the fixed portion 74a.
4b. The swinging member 73 is approximately L in the horizontal plane.
It has a letter-shaped configuration, and its bent portion is pivotally supported by a pin 76 having a vertical axis. A support member 78 is connected to one end of the swinging member 73 via a pin 79 parallel to the pin 76 . The support member 78 extends in the width direction perpendicular to the conveyance direction 69, and
A rotating member 70 is pivotally supported at one inward end of the rotary member 70 . Further, a pin 80 parallel to the pin 79 is provided protruding from the other end of the support member 78, and these pins 79, 80 are locked in guide holes 81 formed in the support portion 74b. The guide hole 81 is formed to be long along the width direction, and therefore the support member 78 is movable along the width direction.
一方、支持板74の固定部分74aには、搬送
方向69に沿つて水平に延びる長孔82が形成さ
れる。また揺動部材73の他端部にはつまみ棒8
3が固着されており、このつまみ棒83は長孔8
2を貫通して外方に突出される。したがつて長孔
82内でつまみ棒83を左右に動かすことによ
り、揺動部材73はピン76のまわりに揺動駆動
され、それに応じて支持部材78が案内孔81に
沿つて変位する。 On the other hand, a long hole 82 extending horizontally along the conveying direction 69 is formed in the fixed portion 74a of the support plate 74. Also, a knob bar 8 is provided at the other end of the swinging member 73.
3 is fixed, and this knob bar 83 is inserted into the elongated hole 8.
2 and protrudes outward. Therefore, by moving the thumb bar 83 left and right within the elongated hole 82, the swinging member 73 is driven to swing around the pin 76, and the support member 78 is displaced along the guide hole 81 accordingly.
またピン76に関して支持部材78と反対側に
おける支持部分74bには、コイルばね84の一
端部が連結され、コイルばね84の他端部は揺動
部材73の一端部に連結される。しかもコイルば
ね84の一端部の連結位置85とピン76を結ぶ
仮想直線86の延長線は、揺動部材73の回動角
範囲内のほぼ中央にあるように選ばれる。このよ
うにすると、第6図で示す回転部材70の実線位
置と仮想線位置とが固定的に定められる。すなわ
ち、つまみ棒83をコイルばね84のばね力に抗
して第6図の右方に移動させると、揺動部材73
の一端部が仮想直線86を通過したときに、コイ
ルばね84自体のばね力により、支持部材78は
仮想線で示す位置まで自動的に移動し、その位置
がばね力によつて固定的に支持される。また上述
とは逆に支持部材78を仮想線で示す位置から実
線で示す位置まで移動させるときも同様である。
このようにして回転部材70は複写紙搬送装置3
0上に挿脱される。 Further, one end of a coil spring 84 is connected to the support portion 74b on the opposite side of the support member 78 with respect to the pin 76, and the other end of the coil spring 84 is connected to one end of the swinging member 73. Furthermore, the extension of the virtual straight line 86 connecting the connecting position 85 at one end of the coil spring 84 and the pin 76 is selected so as to be approximately at the center within the rotational angle range of the swinging member 73. In this way, the solid line position and the imaginary line position of the rotating member 70 shown in FIG. 6 are fixedly determined. That is, when the knob bar 83 is moved to the right in FIG. 6 against the spring force of the coil spring 84, the swinging member 73
When one end passes through the imaginary straight line 86, the spring force of the coil spring 84 itself automatically moves the support member 78 to the position shown by the imaginary line, and the support member 78 is fixedly supported at that position by the spring force. be done. Further, contrary to the above, the same applies when moving the support member 78 from the position shown by the imaginary line to the position shown by the solid line.
In this way, the rotating member 70
It is inserted and removed on 0.
給紙カセツト21に収納されている複写紙が葉
書のように比較的厚みのある場合を想定する。こ
の場合には、前述の操作手順に基づいて、回転部
材70を第5図で示すように複写紙搬送装置30
上の設定位置88にもたらしておく。この設定位
置88は、搬送方向69に沿う空気吸引空間55
の空気吸引部59に近接した下流側であつてしか
も搬送ローラ46の軸線に沿う一側端に定められ
る。しかも第7図で示すように、回転部材70の
最下端70aは搬送ローラ46の最上部46aよ
りも下方にあるように配置される。このように回
転部材70を配置することにより、回転部山70
は葉書などの複写紙87の周縁部における非複写
部分87aに当接するようになる。したがつて分
離用コロナ放電器9で感光ドラム4から剥離され
た複写紙87は回転部材70によつて強制的に下
方に抑えられ、開口部59への吸引力が弱かつた
としても搬送ローラ46に摺接される。したがつ
て葉書などの複写紙87が確実に搬送されること
になる。 Assume that the copy paper stored in the paper feed cassette 21 is relatively thick, like a postcard. In this case, based on the above-described operating procedure, the rotating member 70 is moved to the copy paper conveying device 30 as shown in FIG.
Bring it to the setting position 88 above. This setting position 88 corresponds to the air suction space 55 along the conveyance direction 69.
The transport roller 46 is located on the downstream side close to the air suction section 59 and at one end along the axis of the transport roller 46 . Moreover, as shown in FIG. 7, the lowermost end 70a of the rotating member 70 is arranged below the uppermost end 46a of the conveyance roller 46. By arranging the rotating member 70 in this way, the rotating portion mountain 70
comes into contact with a non-copied portion 87a at the peripheral edge of copy paper 87 such as a postcard. Therefore, the copy paper 87 separated from the photosensitive drum 4 by the separating corona discharger 9 is forcibly held down by the rotating member 70, and even if the suction force to the opening 59 is weak, the copy paper 87 is 46 in sliding contact. Therefore, copy paper 87 such as a postcard can be transported reliably.
なお、比較的薄手の複写紙による複写を行なう
際には、挿脱手段72によつて、回転部材70を
第5図の仮想線で示すように複写紙搬送装置30
の外方に退避させておく。 When making copies using relatively thin copy paper, the insertion/removal means 72 moves the rotary member 70 into the copy paper conveying device 30 as shown by the imaginary line in FIG.
evacuate outside.
上述の実施例では回転部材70を複写紙87の
非複写部分87aに当接させるようにしたが、回
転部材70を複写紙87のトナー像が形成される
部分に当接させるようにしてもよい。そのように
しても、回転部材70は突起71の先端で複写紙
87に当接するので、転写後のトナー像が乱れる
ことが極力防止され、美しい複写画像を得ること
ができる。 In the above embodiment, the rotating member 70 is brought into contact with the non-copying portion 87a of the copy paper 87, but the rotating member 70 may be brought into contact with the portion of the copy paper 87 where the toner image is formed. . Even in this case, since the rotary member 70 contacts the copy paper 87 at the tip of the protrusion 71, the toner image after transfer is prevented from being disturbed as much as possible, and a beautiful copy image can be obtained.
また回転部材として突起を有しないローラを用
いてもよく、その場合には複写紙87の非複写部
分に前記ローラを摺接させるようにすればよい。
したがつて本考案は、分離用コロナ放電器9に代
えて剥離爪を用いる転写式静電複写機に関連して
実施することもできる。 Further, a roller having no protrusions may be used as the rotating member, and in that case, the roller may be brought into sliding contact with the non-copying portion of the copy paper 87.
Therefore, the present invention can also be implemented in connection with an electrostatic transfer copying machine that uses a peeling claw instead of the separating corona discharger 9.
本考案は、上述の実施例のごとき転写式静電複
写機に限定されず、複写紙を搬送ローラに向けて
吸引して搬送する複写機に関連して広く実施する
ことができる。 The present invention is not limited to transfer type electrostatic copying machines such as those in the above-described embodiments, but can be widely implemented in connection with copying machines in which copy paper is conveyed by suction toward a conveyance roller.
上述のごとく本考案によれば、回転部材の働き
により、比較的厚みのある複写紙が搬送ローラに
に押し付けられて確実に搬送される。 As described above, according to the present invention, the relatively thick copy paper is pressed against the transport roller by the function of the rotating member and is reliably transported.
第1図は本考案の一実施例の転写式静電複写機
の前面側から見た簡略化した縦断面図、第2図は
複写紙搬送装置30の一部を示す斜視図、第3図
は空気吸引箱52を示す斜視図、第4図は誘引送
風機63付近を示す斜視図、第5図は複写紙搬送
装置30付近の簡略化した平面図、第6図は第5
図における挿脱手段72の底面図、第7図は複写
紙搬送装置30付近の簡略化した拡大断面図であ
る。
30……複写紙搬送装置、46……搬送ロー
ラ、52……空気吸引箱、55……空気吸引空
間、59……空気吸引部、69……搬送方向、7
0……回転部材、71……突起、87……複写
紙、88……設定位置。
FIG. 1 is a simplified vertical cross-sectional view of a transfer electrostatic copying machine according to an embodiment of the present invention as seen from the front side, FIG. 2 is a perspective view showing a part of a copy paper conveying device 30, and FIG. 3 is a perspective view showing the air suction box 52, FIG. 4 is a perspective view showing the vicinity of the induced blower 63, FIG.
The bottom view of the insertion/removal means 72 in the figure, and FIG. 7 is a simplified enlarged sectional view of the vicinity of the copy paper conveying device 30. 30... copy paper conveyance device, 46... conveyance roller, 52... air suction box, 55... air suction space, 59... air suction section, 69... conveyance direction, 7
0...Rotating member, 71...Protrusion, 87...Copy paper, 88...Setting position.
Claims (1)
回転駆動される複数の搬送ローラと、各搬送ロ
ーラ相互間で上方に向けて開口した吸引部を有
する空気吸引空間を形成する空気吸引箱とを有
する複写紙搬送装置を備える複写機において、 前記搬送ローラと平行な軸線まわりに回転自
在でありかつ複写紙を下方に抑えるための回転
部材が、前記搬送方向に沿う空気吸引部に近接
した下流側であつて前記搬送ローラの軸線に沿
う一側端において空気吸引箱の上方に設定され
た位置に設けられることを特徴とする複写機。 (2) 前記回転部材は、前記設定位置から挿脱自在
であることを特徴とする実用新案登録請求の範
囲第1項記載の複写機。 (3) 前記回転部材は、半径方向外方に向うにつれ
て細狭まりとなる複数の突起を、円周方向に等
間隔をあけて備えることを特徴とする実用新案
登録請求の範囲第1項または第2項記載の複写
機。[Claims for Utility Model Registration] (1) A plurality of conveyance rollers that are driven to rotate around the same axis perpendicular to the conveyance direction of copy paper, and an air having a suction section that opens upward between each conveyance roller. In a copying machine equipped with a copy paper conveyance device having an air suction box forming a suction space, a rotating member that is rotatable around an axis parallel to the conveyance roller and that holds the copy paper downward is arranged in the conveyance direction. 1. A copying machine, characterized in that the copying machine is installed at a position set above an air suction box at one end of the transport roller along the axis of the conveyance roller, which is on the downstream side close to the air suction section along the axis of the conveyance roller. (2) The copying machine according to claim 1, wherein the rotating member is capable of being inserted and removed from the set position. (3) The rotating member is provided with a plurality of protrusions that become narrower toward the outside in the radial direction and are equally spaced in the circumferential direction. Copying machine according to item 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7558782U JPS58178150U (en) | 1982-05-22 | 1982-05-22 | Copy machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7558782U JPS58178150U (en) | 1982-05-22 | 1982-05-22 | Copy machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58178150U JPS58178150U (en) | 1983-11-29 |
JPS6312120Y2 true JPS6312120Y2 (en) | 1988-04-07 |
Family
ID=30084937
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7558782U Granted JPS58178150U (en) | 1982-05-22 | 1982-05-22 | Copy machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58178150U (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60154331U (en) * | 1984-03-24 | 1985-10-15 | 京セラミタ株式会社 | Copy paper conveyance device in a copying machine |
JPH0717478Y2 (en) * | 1987-03-26 | 1995-04-26 | 三菱重工業株式会社 | Plate transporter |
JP4156733B2 (en) * | 1998-12-08 | 2008-09-24 | リンテック株式会社 | Pasting device |
-
1982
- 1982-05-22 JP JP7558782U patent/JPS58178150U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS58178150U (en) | 1983-11-29 |
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