JPH0555864B2 - - Google Patents
Info
- Publication number
- JPH0555864B2 JPH0555864B2 JP58210596A JP21059683A JPH0555864B2 JP H0555864 B2 JPH0555864 B2 JP H0555864B2 JP 58210596 A JP58210596 A JP 58210596A JP 21059683 A JP21059683 A JP 21059683A JP H0555864 B2 JPH0555864 B2 JP H0555864B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- transfer paper
- intermediate tray
- double
- reversing
- 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 - Lifetime
Links
- 238000005192 partition Methods 0.000 claims description 15
- 230000003287 optical effect Effects 0.000 claims description 10
- 239000011521 glass Substances 0.000 description 19
- 108091008695 photoreceptors Proteins 0.000 description 11
- 230000032258 transport Effects 0.000 description 11
- 210000000078 claw Anatomy 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
- G03G15/23—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 specially adapted for copying both sides of an original or for copying on both sides of a recording or image-receiving material
- G03G15/231—Arrangements for copying on both sides of a recording or image-receiving material
- G03G15/238—Arrangements for copying on both sides of a recording or image-receiving material using more than one reusable electrographic recording member, e.g. single pass duplex copiers
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B27/00—Photographic printing apparatus
- G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
- G03B27/52—Details
- G03B27/62—Holders for the original
- G03B27/6207—Holders for the original in copying cameras
- G03B27/625—Apparatus which relate to the handling of originals, e.g. presence detectors, inverters
- G03B27/6257—Arrangements for moving an original once or repeatedly to or through an exposure station
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Counters In Electrophotography And Two-Sided Copying (AREA)
Description
【発明の詳細な説明】 技術分野 本発明は、両面画像形成装置に関する。[Detailed description of the invention] Technical field The present invention relates to a double-sided image forming apparatus.
従来の技術
従来、両面複写機としては種々のものがある
が、一般的には特公昭49−36264号公報に示され
る如く、１個の感光体ドラムを用いているもので
あり、転写紙の搬送路が両面用トレイ等を含んで
ループ状に形成されている。この結果、転写紙が
ジヤムする確率が高くトラブルが多発するととも
に、両面コピーの所要時間が長いものである。BACKGROUND TECHNOLOGY There are various types of double-sided copying machines in the past, but generally, as shown in Japanese Patent Publication No. 49-36264, a single photosensitive drum is used, and the copying machine is The conveyance path is formed in a loop shape including a double-sided tray and the like. As a result, there is a high probability that the transfer paper will jam, leading to frequent troubles, and the time required for double-sided copying is long.
この点、米国特許第3536398号や特開昭56−
161559号公報に示されるように２個の感光体ドラ
ムを用いた両面複写機もある。しかし、この方式
でも表面コピーと裏面コピーとの画像の向きを合
わせるために、光学系に複雑な工夫を要する等の
充分なものではない。 In this regard, U.S. Patent No. 3536398 and
There is also a double-sided copying machine using two photosensitive drums, as shown in Japanese Patent No. 161559. However, even this method is not sufficient, as it requires complicated improvements to the optical system in order to align the image orientations of the front and back copies.
目 的
本発明は、このような点に鑑みなされたもの
で、転写紙の搬送路を単純化してジヤムの減少、
コピー時間の短縮化を図ることができ、特にリピ
ート両面コピー時にその処理の自動高速化を図る
ことができる両面画像形成装置を得ることを目的
とする。Purpose The present invention has been made in view of the above points, and aims to reduce jams and reduce jams by simplifying the transport path of transfer paper.
It is an object of the present invention to provide a double-sided image forming apparatus capable of shortening copying time and, in particular, automatically speeding up the processing during repeat double-sided copying.
構 成
本発明の一実施例を図面に基づいて説明する。
まず、画像記録体となる２個の感光体ドラム１
ａ，１ｂが前・後段に並置されている。これらの
感光体ドラム１ａ，１ｂに対し、電子写真プロセ
スに従い、帯電チヤージヤ２ａ，２ｂ、イレーサ
３ａ，３ｂ、コンタクトガラス４ａ，４ｂ上の原
稿を露光結像する光学系５ａ，５ｂ、現像装置６
ａ，６ｂ、用紙として転写紙７ａ，７ｂの給紙部
８ａ，８ｂ、分離転写チヤージヤ９ａ，９ｂ、ク
リーニング装置１０ａ，１０ｂ、除電装置１１
ａ，１１ｂ、定着装置１２ａ，１２ｂが設けられ
ている。ここで、コンタクトガラス４ａ，４ｂ上
には自動原稿搬送装置１３ａ，１３ｂが設けられ
ている。この自動原稿搬送装置１３ａ，１３ｂは
原稿台１４ａ，１４ｂ上にセツトされた原稿１５
ａ，１５ｂを搬送する搬送ベルト１６ａ，１６ｂ
を主とするものであり、リサイクルパス１７ａ，
１７ｂも備えている。このようにして前段画像形
成手段１８ａと後段画像形成手段１８ｂとが形成
されている。Configuration An embodiment of the present invention will be described based on the drawings.
First, two photoreceptor drums 1 which become image recording bodies
a and 1b are juxtaposed in the front and rear stages. Chargers 2a, 2b, erasers 3a, 3b, optical systems 5a, 5b for exposing and forming original images on contact glasses 4a, 4b, and a developing device 6 are attached to these photoreceptor drums 1a, 1b according to an electrophotographic process.
a, 6b, paper feed sections 8a, 8b for transfer paper 7a, 7b as paper, separation transfer chargers 9a, 9b, cleaning devices 10a, 10b, static eliminator 11
a, 11b, and fixing devices 12a, 12b. Here, automatic document feeders 13a and 13b are provided on contact glasses 4a and 4b. The automatic document feeders 13a and 13b carry the document 15 set on the document table 14a and 14b.
Conveyor belts 16a, 16b that convey a, 15b
Mainly, recycling path 17a,
17b is also provided. In this way, the front-stage image forming means 18a and the rear-stage image forming means 18b are formed.
このような前・後段画像形成手段１８ａ，１８
ｂは転写紙搬送路２０と原稿搬送路２１とにより
結合されている。まず、転写紙搬送路２０は感光
体ドラム１ａ，１ｂ間を結んで転写紙７ａを前段
側から後段側へ搬送させるもので略直線状に形成
されており、その途中に転写紙反転装置２２を有
する。この転写紙反転装置２２は１枚の転写紙７
ａだけを反転させて直ちに後段側へ搬送させうる
転写紙反転搬送装置２３とその下方に位置する転
写紙反転中間トレイ２４とにより構成されてい
る。転写紙反転搬送装置２３は周知のように三本
ローラ対２５と反転路２６とにより構成されてお
り、図示の如く三本ローラ対２５の上側２つの従
ローラが反転路２６を開放していれば転写紙７ａ
が反転路２６に入り込んで反転・搬送されるが、
反転路２６を閉じれば転写紙７ａは反転されるこ
となく単に通過することになるものである。転写
紙反転中間トレイ２４は基本的には仕切り部材と
しての仕切り板２７と再給紙手段として作用する
給紙ローラ２８とを備えてなるものである。ここ
で、転写紙反転中間トレイ２４は、第２図に示す
ように逃げ空間を有するようにクシ歯状に形成さ
れており、仕切り板２７は転写紙反転中間トレイ
２４の逃げ空間に位置して軸２７ａを中心に回転
し得るように設けられている。ここで、仕切り板
２７は可撓性部材により形成されており、その回
動途中に底板７１により回動軌跡が小さくなるよ
うに設定されている。このような仕切り板２７の
存在により転写紙反転中間トレイ２４の後段（左
側）は収納された複数枚の転写紙７ａを給紙ロー
ラ２８により再給紙させる給紙部７２とされ、前
段（右側）は表面コピー済みの転写紙７ａを収納
する収納部７３とされている。そして、転写紙反
転搬送装置２３側と転写紙反転中間トレイ２４側
とを選択的に切換えるとともに、片面に画像が形
成された転写紙７ａ，７ｂを前記中間トレイ２４
に送り込む搬入手段として作用する切換爪２９が
設けられている。更に、転写紙反転搬送装置２３
の後段には反転された転写紙７ａを収納しうる第
二中間トレイ３０が給紙ローラ３１とともに転写
紙搬送路２０に対し並列的に設けられており、両
者を選択切換えする切換爪３２が設けられてい
る。 Such front and rear image forming means 18a, 18
b is connected by a transfer paper transport path 20 and an original transport path 21. First, the transfer paper conveyance path 20 connects the photosensitive drums 1a and 1b to convey the transfer paper 7a from the front side to the rear side, and is formed in a substantially straight line. have This transfer paper reversing device 22 rotates one sheet of transfer paper 7.
The transfer paper reversing and conveying device 23 is configured to invert only the transfer sheet a and immediately convey it to the subsequent stage side, and a transfer sheet reversing intermediate tray 24 located below the transfer sheet reversing conveyance device 23. As is well known, the transfer sheet reversing conveyance device 23 is composed of three roller pairs 25 and a reversing path 26, and as shown in the figure, the upper two subordinate rollers of the three roller pairs 25 open the reversing path 26. Transfer paper 7a
enters the reversing path 26 and is reversed and conveyed,
When the reversing path 26 is closed, the transfer paper 7a simply passes through without being reversed. The transfer paper reversing intermediate tray 24 basically includes a partition plate 27 as a partition member and a paper feed roller 28 that acts as a paper refeeding means. Here, the transfer paper reversing intermediate tray 24 is formed in a comb-like shape so as to have an escape space as shown in FIG. 2, and the partition plate 27 is located in the escape space of the transfer paper reversing intermediate tray 24. It is provided so as to be able to rotate around the shaft 27a. Here, the partition plate 27 is formed of a flexible member, and is set so that its rotation locus is reduced by the bottom plate 71 during its rotation. Due to the presence of such a partition plate 27, the rear stage (left side) of the transfer paper reversing intermediate tray 24 is used as a paper feed section 72 for refeeding the stored plural sheets of transfer paper 7a by the paper feed roller 28, and the front stage (right side) ) is a storage section 73 that stores the transfer paper 7a whose front surface has been copied. Then, the transfer paper reversing and conveying device 23 side and the transfer paper reversing intermediate tray 24 side are selectively switched, and the transfer papers 7a and 7b with an image formed on one side are transferred to the intermediate tray 24 side.
A switching claw 29 is provided which acts as a carrying means for feeding the material into the container. Furthermore, the transfer paper reversing conveyance device 23
At the rear stage, a second intermediate tray 30 capable of storing the inverted transfer paper 7a is provided in parallel with the transfer paper conveyance path 20 together with a paper feed roller 31, and a switching claw 32 is provided for selectively switching between the two. It is being
一方、原稿搬送路２１も自動原稿搬送装置１３
ａ，１３ｂ間を結んで原稿１５ａを前段側から後
段側へ搬送させるもので略直線状に形成されてお
り、その途中に原稿反転装置３５が設けられてい
る。この原稿反転装置３５は転写紙反転搬送装置
２３と同様に三本ローラ対３６と反転路３７とか
らなり、反転路３７は原稿手差しを兼用してい
る。ここで、自動原稿搬送装置１３ａの後段には
原稿搬送路２１側とリサイクルパス１７ａ側とを
選択切換えする切換爪３８が設けられ、更に、自
動原稿搬送装置１３ａ用に設けられた排紙トレイ
３９側とリサイクルパス１７ａ側とを選択切換え
する切換爪４０が設けられている。 On the other hand, the document transport path 21 is also connected to the automatic document transport device 13.
A and 13b are connected to convey the original 15a from the front stage side to the rear stage side, and it is formed in a substantially straight line, and a document reversing device 35 is provided along the way. The document reversing device 35, like the transfer sheet reversing and conveying device 23, is composed of three roller pairs 36 and a reversing path 37, and the reversing path 37 also serves as manual document feed. Here, a switching claw 38 for selectively switching between the document transport path 21 side and the recycling path 17a side is provided at the rear stage of the automatic document feeder 13a, and a paper discharge tray 39 provided for the automatic document feeder 13a is provided. A switching claw 40 is provided for selectively switching between the recycle path 17a side and the recycle path 17a side.
ついで、感光体ドラム１ｂ側の定着送置１２ｂ
の後段には三本ローラ対５０と反転路５１ととも
に紙折りストツパー５２を有する反転排出装置５
３が設けられ、その後段には切換爪５４により選
択される排紙トレイ５５とソータ５６とが設けら
れている。又、自動原稿搬送装置１３ｂの後段に
は三本ローラ対５７と反転路５８とを有する反転
排出装置５９を介して排紙トレイ６０が設けられ
ている。６１は反転排出装置５９側とリサイクル
パス１７ｂ側とを選択切換えする切換爪である。 Next, the fixing station 12b on the photosensitive drum 1b side
At the rear stage, there is a reversing discharge device 5 having three roller pairs 50, a reversing path 51, and a paper folding stopper 52.
3 is provided, and a paper discharge tray 55 and a sorter 56, which are selected by a switching claw 54, are provided at the subsequent stage. Further, a paper discharge tray 60 is provided downstream of the automatic document feeder 13b via a reversal discharge device 59 having three roller pairs 57 and a reversal path 58. Reference numeral 61 is a switching claw for selectively switching between the reversing and discharging device 59 side and the recycle path 17b side.
なお、７０は給紙部８ａと並列的に設けられた
手差し給紙部である。 Note that 70 is a manual paper feed section provided in parallel with the paper feed section 8a.
このような構成において、本実施例の両面複写
機によれば各種態様に対処できる。ここに、スイ
ツチ類、制御回路等は特に図示しないが、各種モ
ードは自由に設定できるものである。 With such a configuration, the double-sided copying machine of this embodiment can handle various aspects. Although switches, control circuits, etc. are not particularly shown here, various modes can be set freely.
まず、両面原稿１枚からリピート設定された所
定枚数の両面コピーを得るリピート両面コピーモ
ード時を考える。このとき、原稿１５ａを原稿台
１４ａ上にセツトする。しかして、コピーを開始
させるとこの原稿１５ａが給紙され搬送ベルト１
６ａによりコンタクトガラス４ａ上に送られ停止
する。そこで、光学系５ａがコンタクトガラス４
ａ上の原稿１５ａの表面を露光スキヤニングして
回転中の感光体ドラム１ａ上に潜像を形成する。
この潜像は現像装置６ａにより現像された後、給
紙部８ａ側から所定タイミングで給紙された転写
紙７ａに分離転写チヤージヤ９ａの作用により転
写される。そして、定着装置１２ａを通過して転
写紙７ａへの表面コピーが完了する。このような
動作がコンタクトガラス４ａ上に給送セツトされ
た原稿１５ａにつき感光体ドラム１ａ側でリピー
ト枚数分の複写動作が繰返されて表面コピーが作
成される。表面コピー済み、すなわち、片面画像
形成後の用紙として転写紙７ａは順次転写紙反転
中間トレイ２４に排紙されて一時収納される。こ
のとき、転写紙反転中間トレイ２４において、仕
切り板２７は第１図に示すような初期状態にあ
り、給紙部７２、収納部７３の区別なく転写紙７
ａが転写紙反転中間トレイ２４内に収納される。
そして、リピート枚数分の表面コピーが終了する
と、コンタクトガラス４ａ上の原稿１５ａは原稿
反転装置３５により反転されつつコンタクトガラ
ス４ｂ上に搬送セツトされる。一方、転写紙反転
中間トレイ２４中又は直前搬送路中には排紙枚数
検知手段が備えられており、リピート枚数分の転
写紙７ａの収納が検知されると、仕切り板２７が
第３図に示すように給紙ローラ２８側へ切換わ
り、既に収納済みの転写紙７ａを給紙ローラ２８
へ加圧して感光体ドラム１ｂ側への再給紙待機状
態となる。したがつて、この転写紙７ａは給紙部
７２に位置することになり、仕切り板２７の右方
には収納部７３が確保される。しかして、コンタ
クトガラス４ｂ上にセツトされた原稿１５ａにつ
き感光体ドラム１ｂ側で裏面コピーが行なわれる
ことになり、表面コピー済みの転写紙７ａは中間
トレイ２４から給紙ローラ２８により反転状態で
１枚ずつ順に給紙され、両面コピーが完了する。
この時、前段側についてみれば、コンタクトガラ
ス４ａ上に既に次の原稿１５ａがセツトされてお
り、この原稿１５ａにつき感光体ドラム１ａ側で
所定リピート枚数分の表面コピーが行なわれ、こ
の表面コピー済みの転写紙７ａは順次転写紙反転
中間トレイ２４の収納部７３に排紙収納されるこ
とになる。つまり、後段側では前回の表面コピー
に対する裏面コピーが行なわれ、これと同時に前
段側では次の表面コピーを行なうことになる。転
写紙反転中間トレイ２４で見れば、給紙部７２に
より表面コピー済みの転写紙７ａの給紙を行ない
つつ、収納部７３により次の裏面コピー済みの転
写紙７ａを収納することになる。そして、リピー
ト枚数分の処理が終了すると、収納部７３にはそ
の枚数分の転写紙７ａが収納され、給紙部７２に
は無くなることから、第４図に示すように仕切り
板２７が一点鎖線に示すように順次回動変位して
収納部７３に収納された転写紙７ａを給紙部７２
に移行させ、第３図に示す状態に戻り、再び収納
部７３を確保する。 First, let us consider a repeat duplex copy mode in which a predetermined number of double-sided copies are made from a single double-sided original. At this time, the original 15a is set on the original table 14a. When copying is started, this original 15a is fed and conveyed to the conveyor belt 1.
6a onto the contact glass 4a and stops there. Therefore, the optical system 5a is connected to the contact glass 4.
A latent image is formed on the rotating photosensitive drum 1a by exposing and scanning the surface of the document 15a on the photoreceptor drum 1a.
After this latent image is developed by the developing device 6a, it is transferred to the transfer paper 7a fed at a predetermined timing from the paper feed section 8a by the action of the separation transfer charger 9a. Then, the image passes through the fixing device 12a and the surface copying onto the transfer paper 7a is completed. Such an operation is repeated for the number of copies of the original document 15a fed and set on the contact glass 4a on the photosensitive drum 1a side, thereby creating a front side copy. The transfer paper 7a is sequentially discharged to the transfer paper reversing intermediate tray 24 and temporarily stored therein as a paper with front side copying, that is, with an image formed on one side. At this time, in the transfer paper reversing intermediate tray 24, the partition plate 27 is in the initial state as shown in FIG.
a is stored in the transfer paper reversing intermediate tray 24.
When the front side copying for the number of repeat sheets is completed, the original 15a on the contact glass 4a is reversed by the original reversing device 35 and conveyed and set onto the contact glass 4b. On the other hand, a means for detecting the number of ejected sheets is provided in the transfer paper reversing intermediate tray 24 or in the immediately preceding conveyance path, and when it is detected that the transfer paper 7a corresponding to the number of repeat sheets has been stored, the partition plate 27 is moved to the position shown in FIG. As shown, the switch is switched to the paper feed roller 28 side, and the already stored transfer paper 7a is transferred to the paper feed roller 28.
Pressure is applied to the photoreceptor drum 1b, and the paper enters a standby state for refeeding to the photoreceptor drum 1b side. Therefore, this transfer paper 7a is located in the paper feed section 72, and a storage section 73 is secured on the right side of the partition plate 27. As a result, the reverse side of the original 15a set on the contact glass 4b is copied on the photosensitive drum 1b side, and the transfer paper 7a on which the front side has been copied is transferred from the intermediate tray 24 by the paper feed roller 28 in an inverted state. Paper is fed one by one, and duplex copying is completed.
At this time, if we look at the previous stage side, the next original 15a has already been set on the contact glass 4a, and a predetermined number of repeat copies of the front side of this original 15a are performed on the photosensitive drum 1a side, and this front side copy has been completed. The transfer sheets 7a are sequentially discharged and stored in the storage section 73 of the transfer sheet reversing intermediate tray 24. That is, on the subsequent stage side, a back side copy is performed in response to the previous front side copy, and at the same time, on the previous stage side, the next front side copy is performed. In the case of the transfer paper reversing intermediate tray 24, the paper feed section 72 feeds the transfer paper 7a whose front side has been copied, and the storage section 73 stores the next transfer paper 7a whose back side has been copied. When the processing for the number of repeat sheets is completed, the transfer paper 7a for that number is stored in the storage section 73 and is no longer in the paper feed section 72. Therefore, as shown in FIG. As shown in FIG.
3 to return to the state shown in FIG. 3, and secure the storage section 73 again.
次に、同じく両面原稿−両面コピーモードであ
るが、両面原稿１枚から１枚の両面コピーを得る
１−１両面コピーモード時を考える。基本的には
前述したリピート両面コピーモード時と同様であ
るが、切換爪２９が切換わり転写紙反転中間トレ
イ２４に代わつて転写紙反転搬送装置２３が選択
される。このとき、原稿１５ａを原稿台１４ａ上
にセツトする。しかして、コピーを開始させると
この原稿１５ａが給紙され搬送ベルト１６ａによ
りコンタクトガラス４ａ上に送られ停止する。そ
こで、光学系５ａがコンタクトガラス４ａ上の原
稿１５ａの表面を露光スキヤニングして回転中の
感光体ドラム１ａ上に潜像を形成する。この潜像
は現像装置６ａにより現像された後、給紙部８ａ
側から所定タイミングで給紙された転写紙７ａに
分離転写チヤージヤ９ａの作用により転写され
る。そして、定着装置１２ａを通過して転写紙７
ａへの表面コピーが完了する。このようにして表
面コピーが完了すると、コンタクトガラス４ａ上
の原稿１５ａは搬送ベルト１６ａにより原稿反転
装置３５側へ搬送され、この原稿反転装置３５で
反転されて裏面側を下にして自動原稿搬送装置１
３ａ側へ向かい、その搬送ベルト１６ｂによりコ
ンタクトガラス４ｂ上にセツトされる。同時に、
自動原稿搬送装置１３ａで側では次の原稿１５ａ
がコンタクトガラス４ａ上にセツトされる。一
方、表面コピー済みの転写紙７ａは定着装置１２
ａから転写紙反転搬送装置２３へ送られ、未コピ
ーの裏面側が上になるように反転されて転写紙搬
送路２０を通り感光体ドラム１ｂに対し待機状態
となる。そこで、この感光体ドラム１ｂ側におい
て裏面コピーが行なわれる（この時、感光体ドラ
ム１ａ側では次に原稿の表面コピーが行なわれ
る）。即ち、コンタクトガラス４ｂ上にセツトさ
れた原稿１５ａ裏面側が光学系５ｂにより露光ス
キヤニングされて感光体ドラム１ｂ上に潜像が形
成され、現像・転写・定着プロセスに従い表面コ
ピー済み転写紙７ａの裏面コピーが形成されるこ
とになる。そして、原稿１５ａ、両面コピー済み
の転写紙７ａは排紙トレイ６０．５５等に排紙さ
れる。（必要に応じて反転されたり、ソータ５６
が選択される）。 Next, consider a 1-1 duplex copy mode in which one double-sided copy is made from one double-sided original, which is also a double-sided original-two-sided copy mode. Basically, it is the same as in the repeat double-sided copy mode described above, but the switching claw 29 is switched and the transfer paper reversing conveyance device 23 is selected instead of the transfer paper reversing intermediate tray 24. At this time, the original 15a is set on the original table 14a. When copying is started, the original 15a is fed, conveyed onto the contact glass 4a by the conveyor belt 16a, and stopped. Therefore, the optical system 5a exposes and scans the surface of the document 15a on the contact glass 4a to form a latent image on the rotating photosensitive drum 1a. After this latent image is developed by the developing device 6a, the paper feed section 8a
The image is transferred onto a transfer paper 7a fed from the side at a predetermined timing by the action of a separation transfer charger 9a. Then, the transfer paper 7 passes through the fixing device 12a.
The surface copy to a is completed. When the front side copy is completed in this way, the original 15a on the contact glass 4a is conveyed by the conveyor belt 16a to the original reversing device 35, and is turned over by the original reversing device 35 so that the back side is facing down. 1
3a side, and is set on the contact glass 4b by the conveyor belt 16b. at the same time,
The next document 15a is placed next to the automatic document feeder 13a.
is set on the contact glass 4a. On the other hand, the transfer paper 7a whose front surface has been copied is transferred to the fixing device 12.
The transfer paper is sent from a to the transfer paper reversing conveyance device 23, and is reversed so that the uncopied back side faces upward, passes through the transfer paper conveyance path 20, and is placed in a standby state with respect to the photoreceptor drum 1b. Therefore, a back side copy is performed on the photosensitive drum 1b side (at this time, a front side copy of the document is next performed on the photosensitive drum 1a side). That is, the back side of the original 15a set on the contact glass 4b is exposed and scanned by the optical system 5b to form a latent image on the photoreceptor drum 1b, and according to the development, transfer and fixing process, the back side of the transfer paper 7a on which the front side has been copied is copied. will be formed. Then, the original 15a and the transfer paper 7a on which both sides have been copied are discharged to a paper discharge tray 60.55 or the like. (It can be reversed if necessary, or the sorter 56
is selected).
又、両面コピーモードであるが、片面原稿から
両面コピーを得る場合を考える。この場合にも１
−１両面コピーモードとリピート両面コピーモー
ドとがあるが、前者の場合には転写紙反転搬送装
置２３が選択され、後者の場合には転写紙反転中
間トレイ２４が選択される。一方、原稿側につい
ては、まず、全ての原稿を自動原稿搬送装置１３
ａの原稿台１４ａ上にセツトし、奇数番目（表面
用）の原稿１５ａにつき感光体ドラム１ａ側で表
面コピーが終了した後、このコンタクトガラス４
ａ上の奇数番目の原稿１５ａを原稿搬送路２１−
コンタクトガラス４ｂを通して直ちに排紙させる
一方、原稿台１４ａ上の次の偶数番目（裏面用）
の原稿１５ａをコンタクトガラス４ａ−原稿搬送
路２１を通過させてコンタクトガラス４ｂ上に搬
送セツトして裏面コピーに供するようにする。即
ち、原稿反転装置３５は非作動状態となる。 Also, in the double-sided copy mode, consider the case where a double-sided copy is obtained from a single-sided original. In this case also 1
There are a -1 double-sided copy mode and a repeat double-sided copy mode, and in the former case, the transfer paper reversal conveyance device 23 is selected, and in the latter case, the transfer paper reversal intermediate tray 24 is selected. On the other hand, regarding the document side, first, all documents are transferred to the automatic document feeder 13.
A is set on the document table 14a, and after the front side copying of the odd-numbered (front side) document 15a is completed on the photosensitive drum 1a side, this contact glass 4
The odd-numbered originals 15a on top a are transferred to the original transport path 21-
While the paper is immediately ejected through the contact glass 4b, the next even numbered paper (for the back side) on the document table 14a is ejected.
The document 15a is passed through the contact glass 4a and the document conveyance path 21, and conveyed and set on the contact glass 4b for back side copying. That is, the document reversing device 35 becomes inactive.
いずれにしても、このような両面コピーモード
にあつては、前段画像形成手段１８ａが表面コピ
ーモードを作成し、後段画像形成手段１８ｂが裏
面コピーを作成して両面コピーを完成するもので
ある。この場合、転写紙７ａは略直線状で短い転
写紙搬送路２０により感光体ドラム１ａ側から感
光体ドラム１ｂ側へ搬送されるため、転写ジヤム
の発生確率が低くなり、コピー速度も向上するも
のである。これは原稿側でも同様であり、自動原
稿搬送送置１３ａ，１３ｂ間を結ぶ原稿搬送路２
１が略直線状で短いため、原稿ジヤムが減少す
る。又、転写紙７ａが表面コピー後、転写紙反転
装置２３により反転されて感光体ドラム１ｂ側へ
搬送されるため、感光体ドラム１ａへ向けて給紙
される場合と同等であり、光学系５ａ，５ｂ等の
複写プロセス構成要素の配置等を感光体ドラム１
ａ，１ｂ双方とも全く同じにすることができる。
従つて、従来の如く、画像の向きを合わせる等、
光学系に複雑な工夫をする必要がなく、単純化で
きる。又、この結果、原稿も単純に前段側から後
段側へ流す方式を採用でき、自動原稿搬送装置１
３ａ，１３ｂの利用により、大量の両面コピー処
理を自動的かつ短時間で行なうことができるもの
である。 In any case, in such a double-sided copy mode, the front-stage image forming means 18a creates a front-side copy mode, and the rear-stage image forming means 18b creates a back-side copy to complete the double-sided copy. In this case, since the transfer paper 7a is conveyed from the photoreceptor drum 1a side to the photoreceptor drum 1b side by the substantially straight and short transfer paper conveyance path 20, the probability of occurrence of a transfer jam is reduced and the copying speed is also improved. It is. This is the same on the document side, and the document conveyance path 2 that connects the automatic document conveyance and feeding stations 13a and 13b.
1 is substantially linear and short, document jams are reduced. Further, after the front side of the transfer paper 7a is copied, it is reversed by the transfer paper reversing device 23 and conveyed to the photoreceptor drum 1b side, which is equivalent to the case where the paper is fed toward the photoreceptor drum 1a, and the optical system 5a , 5b, etc. on the photosensitive drum 1.
Both a and 1b can be made exactly the same.
Therefore, as in the past, adjusting the orientation of the image, etc.
There is no need to make complicated improvements to the optical system, and it can be simplified. Additionally, as a result, it is possible to adopt a method in which the originals simply flow from the front side to the rear side, and the automatic document feeder 1
3a and 13b, a large amount of double-sided copying can be performed automatically and in a short time.
又、転写紙反転装置２２が転写紙搬送路２０の
上下に対向配置された転写紙反転搬送装置２３と
転写紙反転中間トレイ２４とにより構成され、両
者が切換爪２９により選択自在であり、両面コピ
ーであつても１−１両面コピーモード時には転写
紙反転搬送装置２３が選択され、表面コピー済み
の転写紙７ａが反転されて直ちに後段へ送られる
ため、両面コピーの時間が短縮化される。一方、
リピート両面コピーモード時には転写紙反転中間
トレイ２４が選択され、この転写紙反転中間トレ
イ２４が給紙部７から収納部７３とを有してお
り、給紙部７２から裏面コピー用の転写紙７ａを
給紙しながら、収納部７３を利用して次の原稿１
５ａの表面コピー済み転写紙７ａを収納でき、結
局、表・裏面コピーを１−１両面コピーの場合と
同様に前・後段で並行して行なうことができ、処
理能力がアツプする。又、この転写紙反転中間ト
レイ２４において実際に排紙収納される転写紙７
ａ枚数のチエツクにより、リピート枚数チエツ
ク、ジヤムチエツク等がより確実となる。更に、
裏面コピーに際しては転写紙７ａがこの転写紙反
転中間トレイ２４から１枚ずつ連続的に感光体ド
ラム１ｂ側へ給紙されるものであつて、後段画像
形成手段１８ｂ単独機の場合の給紙状態と同等で
あり、コピー時間が遅くなるものではない。つま
り、１−１両面コピーモード時には転写紙反転搬
送装置２３により転写紙７ａを個別処理でき、リ
ピート両面コピーモード時には転写紙反転中間ト
レイ２４により転写紙７ａを一括処理できるもの
であり、各々の態様に応じた適切な処理となる。 Further, the transfer paper reversing device 22 is composed of a transfer paper reversing conveyance device 23 and a transfer paper reversing intermediate tray 24, which are arranged oppositely above and below the transfer paper conveying path 20, and both can be freely selected by a switching claw 29, and both sides can be Even in the case of copying, the transfer paper reversing and conveying device 23 is selected in the 1-1 double-sided copy mode, and the transfer paper 7a on which the front side has been copied is reversed and immediately sent to the subsequent stage, so that the time required for double-sided copying is shortened. on the other hand,
In the repeat double-sided copy mode, the transfer paper reversing intermediate tray 24 is selected, and this transfer paper reversing intermediate tray 24 has a paper feed section 7 to a storage section 73, and a transfer paper 7a for back-side copying from the paper feed section 72. While feeding the next document 1, use the storage section 73 to feed the next document 1.
The transfer paper 7a on which front side copies have been made can be stored, and as a result, front and back side copies can be performed in parallel at the front and rear stages as in the case of 1-1 double-sided copying, increasing processing capacity. Also, the transfer paper 7 that is actually discharged and stored in this transfer paper reversal intermediate tray 24
By checking the number of sheets a, checking the number of repeat sheets, jam checking, etc. becomes more reliable. Furthermore,
During back side copying, the transfer paper 7a is continuously fed one by one from the transfer paper reversing intermediate tray 24 to the photosensitive drum 1b side, and the paper feeding state is the same as in the case where the subsequent image forming means 18b is used alone. is equivalent to , and does not slow down the copy time. That is, in the 1-1 double-sided copy mode, the transfer paper 7a can be processed individually by the transfer paper reversing conveyance device 23, and in the repeat double-sided copy mode, the transfer paper 7a can be processed in batches by the transfer paper reversing intermediate tray 24. Appropriate processing will be carried out depending on the situation.
なお、本実施例では、１−１両面コピーモード
時に転写紙反転搬送装置２３を使用するようにし
たが、この転写紙反転搬送装置２３を省略し、１
−１両面コピーモード時であつても常に転写紙反
転中間トレイ２４を使用するようにしてもよい。 In this embodiment, the transfer paper reversal conveyance device 23 is used in the 1-1 double-sided copy mode, but this transfer paper reversal conveyance device 23 is omitted and the 1-1 double-sided copy mode is used.
The transfer paper reversing intermediate tray 24 may be always used even in the -1 double-sided copy mode.
又、片面コピーモードも選択できるものであ
り、種々の片面コピー処理ができる。まず、本実
施例の両面複写機は前・後段画像形成手段１８
ａ，１８ｂの連係結合により両面コピーをなし得
るものであるが、図示しない切換スイツチにより
前・後段画像形成手段１８ａ，１８ｂは各々単独
で駆動しうるものである。即ち、単独複写機が２
台あることになり、各々の自動原稿搬送装置１３
ａ，１３ｂに原稿１５ａ，１５ｂをセツトし、転
写紙７ａ，７ｂは各々の給紙部８ａ，８ｂから給
紙させることにより各々の感光体ドラム１ａ，１
ｂ、光学系５ａ，５ｂ等により並行して同時に片
面コピーを行なうことができる。よつて、大量の
コピーの時、分担してコピーすれば半分の時間で
済むことになり高速処理できる。この場合、原稿
１５ａは排紙トレイ３９に排紙され、転写紙７ａ
は転写紙反転中間トレイ２４に排紙される。 Furthermore, a single-sided copy mode can also be selected, and various single-sided copy processes can be performed. First, in the double-sided copying machine of this embodiment, the front and rear image forming means 18
Although double-sided copying can be performed by linking the image forming means 18a and 18b, the front and rear image forming means 18a and 18b can each be driven independently by a changeover switch (not shown). In other words, there are 2 independent copying machines.
Therefore, each automatic document feeder 13
The originals 15a, 15b are set on the photosensitive drums 1a, 13b, and the transfer sheets 7a, 7b are fed from the paper feed sections 8a, 8b, respectively.
b. Single-sided copying can be performed simultaneously using optical systems 5a, 5b, etc. Therefore, when copying a large amount, if the copying is done by dividing the copying process, the time will be halved, resulting in high-speed processing. In this case, the original 15a is ejected to the paper ejection tray 39, and the transfer paper 7a
is discharged to the transfer paper reversing intermediate tray 24.
効 果
本発明は、上述したように複数の画像記録体を
反転状態で収納された表面コピー済みの転写紙を
後段画像記録体側へ再給紙搬送させる給紙部と前
段画像記録体側により表面コピー済みの転写紙を
反転収納する収納部とが仕切り部材により形成さ
れた転写紙反転中間トレイを有する転写紙搬送路
で連係結合したので、各種のモードで動作時に並
行処理を行なうことができるため、その処理能力
をアツプさせることができ、しかも、中間トレイ
に設けられた仕切り部材は回転軸を中心として回
転するため、その仕切り部材を回転させることに
より収納部に収納された用紙を給紙部に移すこと
が容易であり、しかも、迅速に行なうことがで
き、更に、自動原稿搬送装置の利用により自動処
理を図ることができるものである。Effects As described above, the present invention provides front-side copying using a paper feed section that re-feeds and transports transfer paper on which front-side copies have been made, in which a plurality of image-recording bodies are housed in an inverted state, to the latter-stage image-recording body, and a former-stage image-recording body. Since the storage section for reversing and accommodating used transfer paper is connected to the transfer paper transport path having a transfer paper reversal intermediate tray formed by a partition member, parallel processing can be performed during operation in various modes. The processing capacity can be increased, and since the partition member installed in the intermediate tray rotates around the rotation axis, by rotating the partition member, the paper stored in the storage section can be transferred to the paper feed section. It is easy to transfer, it can be done quickly, and furthermore, automatic processing can be achieved by using an automatic document feeder.
図面は本発明の一実施例を示すもので、第１図
は概略側面図、第２図は中間トレイの斜視図、第
３図および第４図はその作用を示す側面図であ
る。
１ａ〜１ｂ……感光体ドラム（画像記録体）、
５ａ〜５ｂ……光学系、７ａ……転写紙、２０…
…転写紙搬送路、１３ａ〜１３ｂ……自動原稿搬
送装置、２１……原稿搬送路、２４……転写紙反
転中間トレイ、２７……仕切り板（仕切り部材）、
３５……原稿反転装置、７２……給紙部、７３…
…収納部。
The drawings show one embodiment of the present invention; FIG. 1 is a schematic side view, FIG. 2 is a perspective view of the intermediate tray, and FIGS. 3 and 4 are side views showing its operation. 1a to 1b...photosensitive drum (image recording body),
5a-5b...optical system, 7a...transfer paper, 20...
...Transfer paper transport path, 13a-13b...Automatic document feeder, 21...Document transport path, 24...Transfer paper reversal intermediate tray, 27...Partition plate (partition member),
35... Original reversing device, 72... Paper feeding section, 73...
...Storage department.
Claims (1)
稿搬送装置とを各々設けて前段画像形成手段と後
段画像形成手段とを形成し、これらの画像形成手
段の間を転写紙反転装置と中間トレイとを備えた
転写紙搬送路に結合した両面画像形成装置におい
て、片面画像形成後の用紙を逃げ空間を有する中
間トレイに送り込む搬入手段と、集積終了した前
記用紙を前記中間トレイから一枚ずつ送り出す再
給紙手段と、再給紙される用紙を収納する給紙部
と搬入される用紙を収納する収納部とを仕切り形
成し再給紙される用紙を再給紙手段方向へ付勢す
るとともに前記中間トレイの前記再給紙手段と反
対側で前記給紙部と前記収納部との中間位置に設
けられた回転軸を有し前記中間トレイに形成され
た逃げ空間に位置して回転する仕切り部材とを設
けたことを特徴とする両面画像形成装置。1. An image recording body, an optical system, a transfer paper feed section, and an automatic document feeder are provided respectively to form a front-stage image forming means and a rear-stage image forming means, and a transfer paper reversing device and a transfer paper reversing device are installed between these image forming means. In a double-sided image forming apparatus coupled to a transfer paper conveyance path having an intermediate tray, a carrying means for feeding a sheet of paper on which a single-sided image has been formed to an intermediate tray having an escape space, and a conveying means for transporting the sheets of paper after being stacked one sheet from the intermediate tray. A re-feeding means that feeds the paper out one by one, a paper feeding section that stores the paper to be re-fed, and a storage section that stores the paper that is carried in are formed as partitions, and the paper that is to be re-fed is biased toward the paper re-feeding means. At the same time, the intermediate tray has a rotating shaft provided at an intermediate position between the paper feeding section and the storage section on the opposite side of the paper refeeding means, and rotates while being located in an escape space formed in the intermediate tray. What is claimed is: 1. A double-sided image forming apparatus, comprising: a partition member for forming a double-sided image;
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21059683A JPS60102652A (en) | 1983-11-09 | 1983-11-09 | Both face copying machine |
| US06/666,983 US4586812A (en) | 1983-11-01 | 1984-10-31 | Copying apparatus |
| DE19843439901 DE3439901A1 (en) | 1983-11-01 | 1984-10-31 | COPIER |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21059683A JPS60102652A (en) | 1983-11-09 | 1983-11-09 | Both face copying machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60102652A JPS60102652A (en) | 1985-06-06 |
| JPH0555864B2 true JPH0555864B2 (en) | 1993-08-18 |
Family
ID=16591937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21059683A Granted JPS60102652A (en) | 1983-11-01 | 1983-11-09 | Both face copying machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60102652A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50110640A (en) * | 1974-02-08 | 1975-08-30 | ||
| JPS5288412A (en) * | 1976-01-17 | 1977-07-23 | Kazunari Imahashi | Line printer disposition |
| JPS5427143A (en) * | 1977-08-01 | 1979-03-01 | Ichikoh Ind Ltd | Automatic angle controlling system for electric remote-control mirror |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55178144U (en) * | 1979-06-08 | 1980-12-20 |
-
1983
- 1983-11-09 JP JP21059683A patent/JPS60102652A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50110640A (en) * | 1974-02-08 | 1975-08-30 | ||
| JPS5288412A (en) * | 1976-01-17 | 1977-07-23 | Kazunari Imahashi | Line printer disposition |
| JPS5427143A (en) * | 1977-08-01 | 1979-03-01 | Ichikoh Ind Ltd | Automatic angle controlling system for electric remote-control mirror |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60102652A (en) | 1985-06-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4586812A (en) | Copying apparatus | |
| JPH03179463A (en) | Control method for image forming device | |
| JPS61138262A (en) | Automatic both-side copying machine | |
| JPH0555864B2 (en) | ||
| JPS5835553A (en) | Multimode copying machine | |
| JPH0527852B2 (en) | ||
| JPS6098452A (en) | Double side coyping machine | |
| JPS60100152A (en) | Both side copying machine | |
| JPH0555863B2 (en) | ||
| JP2637200B2 (en) | Image forming device | |
| JPS59113454A (en) | Both-surface copying method of both-surface original | |
| JP2943000B2 (en) | Electrostatographic copier with automatic document feeder | |
| JPS60104964A (en) | Both-side copying machine | |
| JPS6098456A (en) | Double side copying machine | |
| JP2001192159A (en) | Sheet material reversing device and sheet material processor | |
| JPS6098449A (en) | Double side copying machine | |
| JPS60100151A (en) | Both side copying machine | |
| JPS60101554A (en) | Double-face copying machine | |
| JPS6098455A (en) | Double side copying machine | |
| JPS6097364A (en) | Double-side copying machine | |
| JPS60136759A (en) | Both-surface copying machine | |
| JPS61172138A (en) | Original transportation method in automatic original transporting device | |
| JPS6098453A (en) | Double side copying machine | |
| JPH07199567A (en) | Image formation processing system | |
| JPS60104963A (en) | Both-side copying machine |