JPH0192135A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPH0192135A JPH0192135A JP62248886A JP24888687A JPH0192135A JP H0192135 A JPH0192135 A JP H0192135A JP 62248886 A JP62248886 A JP 62248886A JP 24888687 A JP24888687 A JP 24888687A JP H0192135 A JPH0192135 A JP H0192135A
- Authority
- JP
- Japan
- Prior art keywords
- sheet material
- main
- sub
- system unit
- conveyance path
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims description 99
- 238000000034 method Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 description 7
- 238000000926 separation method Methods 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Conveyance By Endless Belt Conveyors (AREA)
Abstract
Description
【発明の詳細な説明】
イ、発明の目的
〔産業上の利用分野〕
本発明は、レーザビームプリンタや電子写真複写機等の
画像形成装置、特に転写紙等のシート材の片面もしくは
両面に画像形成可能な画像形成装置に関する。Detailed Description of the Invention A. Purpose of the Invention [Industrial Field of Application] The present invention is directed to image forming apparatuses such as laser beam printers and electrophotographic copying machines, particularly those capable of forming images on one or both sides of a sheet material such as transfer paper. The present invention relates to an image forming apparatus capable of forming images.
以下、電子写真プロセスを用いたレーザビームプリンタ
を例にして説明する。A laser beam printer using an electrophotographic process will be described below as an example.
第８図はシート材の片面もしくは両面に印字（画像形成
）可能な従来のレーザビームプリンタの概略構成を示す
断面図である。FIG. 8 is a sectional view showing a schematic configuration of a conventional laser beam printer capable of printing (image formation) on one or both sides of a sheet material.
図においてｌは装置本体、２はその本体１内に設けた像
担持体としての感光ドラムであり、図中矢示ａ方向に所
定の周速度で回転駆動される。In the figure, l denotes a main body of the apparatus, and 2 denotes a photosensitive drum as an image carrier provided within the body 1, which is rotated at a predetermined circumferential speed in the direction of arrow a in the figure.
上記感光ドラム２の周囲には帯電器３Φ現像器４・転写
分離帯電器５・クリーナ６等の公知のプロセス機器が配
設されている。Known process equipment such as a charger 3Φ developer 4, a transfer separation charger 5, and a cleaner 6 are arranged around the photosensitive drum 2.
７は図に省略したホストコンピュータ等から入力される
画像信号（プリント信号）に基づいてレーザ光を発信す
る半導体レーザ、８はその半導体レーザ７から発信され
たレーザ光りを回転多面体によりミラー９を介して感光
ドラム２上に走査するスキャナである。Reference numeral 7 denotes a semiconductor laser that emits laser light based on an image signal (print signal) input from a host computer or the like (not shown in the figure), and 8 a semiconductor laser that emits laser light from the semiconductor laser 7 via a mirror 9 using a rotating polyhedron. This is a scanner that scans onto the photosensitive drum 2.
１０は転写紙等のシート材Ｓを収容した給送カセット、
１１はそのカセット１０からシート材を一枚宛送り出す
給送ローラ、１２はシート材Ｓのガイド板、１３ａ１１
１３ｂはシート材を感光ドラム２の回転と同期取りして
該ドラム２と転写分離帯電器５との間に送り込むレジス
トローラ、１４はシート材搬送ベルト、１５は定着器、
１６ａ・１６ｂはシート材排出ローラ、１７は排出トレ
イであり、上記の部材１０〜１７によってシート材主搬
送経路Ｐ１が構成される。10 is a feeding cassette containing sheet material S such as transfer paper;
11 is a feeding roller that feeds the sheet material one by one from the cassette 10; 12 is a guide plate for the sheet material S; 13a11
13b is a registration roller that feeds the sheet material between the drum 2 and the transfer separation charger 5 in synchronization with the rotation of the photosensitive drum 2; 14 is a sheet material conveying belt; 15 is a fixing device;
16a and 16b are sheet material discharge rollers, 17 is a discharge tray, and the above-mentioned members 10 to 17 constitute a sheet material main conveyance path P1.
Ｐ２はシート材Ｓの両面に画像を形成する際に上記主搬
送経路Ｐｉに沿って片面への画像形成を終了したシート
材を反転して再び主搬送経路Ｐ１に導くシート材副搬送
経路であり、ガイド板１８ａ＠ｉｓｂ、１９ａ−１９ｂ
、２０ａ＠２０ｂと、搬送ローラ対２１ａφ２１ｂ、２
２ａ−２２５とで構成されている。２３は上記副搬送経
路にシート材を導くためのフラッパである。P2 is a sheet material sub-transport path that, when forming images on both sides of the sheet material S, reverses the sheet material that has completed image formation on one side along the main transport path Pi and guides it again to the main transport path P1. , guide plate 18a@isb, 19a-19b
, 20a@20b, and a pair of transport rollers 21aφ21b, 2
2a-225. Reference numeral 23 denotes a flapper for guiding the sheet material to the sub-conveyance path.
上記の構成においてシート材Ｓの片面に画像を形成する
場合は、フラッパ２３が図の実線位置にあり、不図示の
ホストコンピュータ等からプリント開始信号が入力され
、プリンタが待機状態にあれば画像形成（プリント）動
作が開始される。すると画像信号に基づいて半導体レー
ザ７から発信されたレーザ光がスキャナ８により走査さ
れ、帯電器３により一様に帯電され、た感光ドラム面に
ミラー９を介してレーザ光が照射されて潜像が形成され
現像器４で現像される。それと同時に給送カセットｌＯ
から一枚宛送り出されたシート材Ｓが、主搬送経路ＰＩ
に沿って搬送され、感光ドラム２と転写分離帯電器５と
の間を通過する際に感光ドラム２上の現像像がシート材
上に転写され、定着器１５で定着されて排出ローラ１６
ａ・１６ｂにより排出トレイ１７上に画像面を上向きに
して排出される。When forming an image on one side of the sheet material S in the above configuration, if the flapper 23 is at the solid line position in the figure, a print start signal is input from a host computer (not shown), etc., and the printer is in a standby state, the image is formed. (Print) operation starts. Then, the laser beam emitted from the semiconductor laser 7 based on the image signal is scanned by the scanner 8, uniformly charged by the charger 3, and the laser beam is irradiated onto the photosensitive drum surface via the mirror 9 to form a latent image. is formed and developed in the developing device 4. At the same time, the feeding cassette lO
The sheet material S sent out one by one from the main conveyance path PI
The developed image on the photosensitive drum 2 is transferred onto the sheet material when it passes between the photosensitive drum 2 and the transfer separation charger 5, and is fixed by the fixing device 15 and transferred to the discharge roller 16.
a and 16b, the paper is ejected onto the ejection tray 17 with the image side facing upward.
また、シート材の両面に画像を形成する場合は、フラッ
パ２３を図の実線示に位置させた状態で上記と同様のプ
ロセスでシート材Ｓの片面に画像が形成され、シート材
の後端がフラッパ２３を通過すると、不図示の検知手段
からの信号でフラッパ２３が図の鎖線位置に移動し、同
時に排出ローラ１６ａ１１１６ｂが逆方向に回転しシー
ト材がスイッチバックして副搬送経路Ｐ２に導かれる。In addition, when forming an image on both sides of the sheet material, the image is formed on one side of the sheet material S by the same process as above with the flapper 23 positioned as indicated by the solid line in the figure, and the rear end of the sheet material is When the sheet material passes through the flapper 23, the flapper 23 is moved to the chain line position in the figure by a signal from a detection means (not shown), and at the same time, the discharge roller 16a1116b rotates in the opposite direction, and the sheet material is switched back and guided to the sub-conveyance path P2. .
その副搬送経路Ｐ２内に導かれたシート材は、搬送ロー
ラ２１ａＩＩ２１ｂ、２２ａ−２２ｂによりガイド板１
８ａ−１８ｂ、１９ａ−１９ｂ、２０ａ−２０ｂ間を通
ってレジストローラ対１３ａ・１３ｂの上流側から再び
主搬送経路Ｐｌ内に画像面を下向きにした状態で導入さ
れ、その画像面と反対側の面に前記と同様のプロセスで
画像が形成されて排出トレイ１７上に排出される。The sheet material guided into the sub-transport path P2 is transported to the guide plate 1 by transport rollers 21aII21b, 22a-22b.
8a-18b, 19a-19b, and 20a-20b from the upstream side of the registration roller pair 13a and 13b again into the main transport path Pl with the image surface facing downward. An image is formed on the surface using the same process as described above, and the paper is discharged onto the discharge tray 17.
また上記従来例のレーザビームプリンタにおいて主搬送
経路Ｐ１もしくは副搬送経路Ｐ２内にシート材がジャム
したときには各搬送経路を構成する部材の一部を移動し
て各搬送経路を開放できるように構成されており、例え
ば主搬送経路Ｐｌ内にシート材がジャムしたときは転写
分離帯電器５・シート材搬送ベル）１４を第８図鎖線示
のように一体的に回動させてジャムしたシート材を除去
する。また副搬送経路Ｐｚ内にシート材がジャムしたと
きにはガイド板１８ａ＠１９ａの全部もしくは一部を同
図鎖線示のように移動させてジャムしたシート材を除去
するように構成されている。Further, in the conventional laser beam printer described above, when a sheet material jams in the main conveyance path P1 or the sub conveyance path P2, a part of the members constituting each conveyance path is moved to open each conveyance path. For example, when a sheet material is jammed in the main conveyance path Pl, the transfer separation charger 5 and sheet material conveyance bell (14) are rotated together as shown by the chain line in FIG. 8 to remove the jammed sheet material. Remove. Further, when a sheet material is jammed in the sub-transport path Pz, all or part of the guide plate 18a@19a is moved as shown by the chain line in the figure to remove the jammed sheet material.
しかしながら上記従来例では、主搬送経路ＰＬ側の部材
を開放状態にすると副搬送経路Ｐ２側の部材に当り、逆
に副搬送経路Ｐ２側の部材を開放状態にすると主搬送経
路Ｐｌ側の部材に当ってしまうため、搬送ガイド部材等
を大きく移動できず、搬送経路上のシート材が非常に除
去しにくく、特にシート材が破れてしまったり、小サイ
ズのシート材がジャムしたときなどは開通となっていた
。また搬送経路を広く開放状態にするため、搬送経路を
構成する部材をいくつかのユニットに分割し、各々が単
独に開放可能であり、搬送経路を少しでも大きく広げら
れる構成になっているが、複数枚のシート材がジャムま
たはプリント内にて停」卜しているときは、各々の搬送
経路のガイド板やユニットを移動させて開放状態にしな
ければならないという不具合もあった。さらにジャムし
たシート材を除去した後、ガイド板等を通常の状態へ復
帰させるのを忘れるおそれもあった。However, in the above conventional example, when a member on the main transport path PL side is opened, it hits a member on the sub transport path P2 side, and conversely, when a member on the sub transport path P2 side is opened, it hits a member on the main transport path Pl side. As a result, the conveyance guide member etc. cannot be moved significantly, and the sheet material on the conveyance path is extremely difficult to remove, especially when the sheet material is torn or a small-sized sheet material is jammed. It had become. In addition, in order to make the transport route wide open, the members that make up the transport route are divided into several units, each of which can be opened independently, making it possible to widen the transport route as much as possible. When a plurality of sheet materials are jammed or stuck in a print, there is also the problem that the guide plates and units of each conveyance path must be moved to open them. Furthermore, after removing the jammed sheet material, there was a risk of forgetting to return the guide plate etc. to the normal state.
本発明は上記の問題点を解決することを目的とする。The present invention aims to solve the above problems.
口、発明の構成
〔問題点を解決するための手段〕
本発明は、シート材給送部から画像形成部を経て最終的
もしくは中間的なシート材排出部に至るシート材主搬送
経路と、両面画像形成時に上記主搬送経路を通過して片
面側に画像形成のなされたシート材を再び主搬送経路に
導くシート材副搬送経路とを有し、上記副搬送経路を構
成する部材の一部を一体化した第１のシート材搬送系ユ
ニットと、上記以外の副搬送経路を構成する部材および
主搬送経路を構成する部材の一部を一体化した第２のシ
ート材搬送系ユニットとを、装置本体に対して外側に回
動可能に構成して上記主搬送経路と副搬送経路とを開放
し得るようにしたことを特徴とする。Summary, Structure of the Invention [Means for Solving Problems] The present invention provides a sheet material main conveyance path from a sheet material feeding section to an image forming section to a final or intermediate sheet material discharging section, and a double-sided a sheet material sub-transport path that passes through the main transport path during image formation and guides the sheet material on which an image has been formed on one side to the main transport path again; The first sheet material conveyance system unit integrated with the second sheet material conveyance system unit that integrates the members constituting the sub-conveyance path other than those mentioned above and a part of the members constituting the main conveyance path are combined into an apparatus. It is characterized in that it is configured to be rotatable outward with respect to the main body so that the main conveyance path and the sub-conveyance path can be opened.
シート材副搬送経路を構成する部材の一部を一体化した
第１のシート材搬送系ユニットと、上記以外の副搬送経
路を構成する部材および主搬送経路を構成する部材の一
部を一体化した第２のシート材搬送系ユニットとを、装
置本体に対して外側に回動可能に構成して主搬送経路と
副搬送経路とを開放し得るようにしたことにより、上記
両搬送経路を構成する部材が互いに干渉することなく。A first sheet material conveyance system unit that integrates some of the members that constitute the sheet material sub-conveyance path, and integrates some of the members that constitute the sub-conveyance path other than those mentioned above and the members that constitute the main conveyance path. The second sheet material conveyance system unit is configured to be rotatable outward with respect to the main body of the apparatus so that the main conveyance path and the sub conveyance path can be opened, thereby configuring both of the above-mentioned conveyance paths. without interfering with each other.
しかも単純な動作で両搬送経路を大きく開放することが
可能となる。Moreover, it is possible to widen both transport paths with a simple operation.
〔実施例〕
第１図は本発明の第１の実施例を示す画像形成装置とし
てのレーザビームプリンタの概略構成の断面図であり、
前記第８図と同一の部材には同一の符号を付して再度の
説明を省略する。[Embodiment] FIG. 1 is a sectional view of a schematic configuration of a laser beam printer as an image forming apparatus showing a first embodiment of the present invention.
The same members as in FIG. 8 are designated by the same reference numerals, and repeated explanations will be omitted.
シート材Ｓの給送カセット１０は装置本体ｌの底部に配
設され、その方セッ）１０から画像形成部を経てシート
材排出部に至る主搬送経路ＰＬは下から上に向って略垂
直に設けられている。A feeding cassette 10 for the sheet material S is disposed at the bottom of the apparatus main body L, and the main conveyance path PL from the cassette 10 to the sheet material discharge section via the image forming section runs approximately vertically from the bottom to the top. It is provided.
その主搬送経路Ｐ１の上部には、該搬送経路Ｐ１を通過
する過程でシート材Ｓに形成された画像面を下向き（フ
ェースダウン）にして排出する第１の排出ローラ対２３
ａ・２３ｂおよび第１の排出トレイ２４と１画像面を上
向き（フェースアップ）にして排出する第２の排出ロー
ラ対２５ａ・２５ｂおよび第２の排出トレイ２６とが設
けられ、各排出ローラ対２３ａ−２３ｂ、２５ａ＊２５
ｂへのシート材進入部に第１と第２のフラッパ２７−２
８が配設されている。At the top of the main conveyance path P1, there is a first discharge roller pair 23 that discharges the sheet material S with the image surface formed on it facing downward (face down) while passing through the conveyance path P1.
a, 23b and a first ejection tray 24, and a second ejection roller pair 25a, 25b and a second ejection tray 26, which eject with one image side facing upward (face up), are provided, and each ejection roller pair 23a -23b, 25a*25
First and second flappers 27-2 are installed at the sheet material entrance portion to b.
8 are arranged.
また上記主搬送経路Ｐ１のシート材排出部側からシート
材を反転させて再び上記のシート材ＰＩに導く副搬送経
路Ｐ２は、上記主搬送経路Ｐ１の外側においてそれと略
平行に設けられている。Further, a sub-transport path P2 that reverses the sheet material from the sheet material discharge section side of the main transport path P1 and guides the sheet material back to the sheet material PI is provided on the outside of the main transport path P1 and substantially parallel thereto.
上記の構成において、シート材の片面にのみ画像を形成
する場合は、給送カセッ）１０から送り出されたシート
材Ｓがシート材Ｐ１を通過する過程で前記従来例と同様
にシート材の片面に画像が形成されて装置外に排出され
るもので、そのとき第１のフラッパ２７を実線位置にす
ることによりシート材は該フラッパ２７にｉ内されて第
１の排出ローラ対２３ａ・２３ｂから第１の排出トレイ
２４上に画像面を下向きにして排出させることができる
。或は第１のフラッパ２７を鎖線位置に、第２のフラッ
パ２８を鎖線位置にすることにより、第２の排出ローラ
対２５ａ−２５ｂから第２の排出トレイ２６上に画像面
を上向きにして排出させることができる。In the above configuration, if an image is to be formed only on one side of the sheet material, the sheet material S sent out from the feeding cassette 10 is printed on one side of the sheet material in the process of passing through the sheet material P1 as in the conventional example. An image is formed and the sheet material is discharged from the apparatus.At this time, by setting the first flapper 27 to the solid line position, the sheet material is contained in the flapper 27 and is transferred from the first pair of discharge rollers 23a and 23b to the first flapper 27. It is possible to discharge the paper onto the first discharge tray 24 with the image surface facing downward. Alternatively, by setting the first flapper 27 to the chain line position and the second flapper 28 to the chain line position, the image is discharged from the second discharge roller pair 25a-25b onto the second discharge tray 26 with the image surface facing upward. can be done.
またシート材の両面に画像を形成するときは、例えば第
１のフラッパ２７を実線位置に、第２のフラッパ２８を
鎖線位置にした状態で、主搬送経路Ｐｌを経て片面に画
像を形成したシート材を第１の排出ローラ対２３ａ・２
３ｂによりスイッチバックさせて副搬送経路Ｐ２に導き
、再び主搬送経路Ｐｉを経て上記の画像面と反対側の面
にも画像を形成して第１の排出ローラ対２３ａ・２３ｂ
から第１の排出トレイ２４上に排出させる。あるいは第
１のフラッパ２７、第２のフラッパ２８を各々鎖線位置
にした状態でシート材の片面に画像を形成して第２の排
出ローラ対２５ａ・２５ｂでスイッチバックさせ、第２
のフラッパ２８を実線位置にして副搬送経路Ｐ２に導き
、主搬送経路Ｐ１を経てシート材両面に画像を形成して
第２のフラッパ２８を鎖線位置に戻して第２の排出ロー
ラ対２５ａ・２５ｂから第２の排出トレイ２６に排出さ
せるものである。When forming images on both sides of a sheet material, for example, with the first flapper 27 at the solid line position and the second flapper 28 at the chain line position, the sheet with an image formed on one side is passed through the main conveyance path Pl. The material is transferred to the first pair of discharge rollers 23a and 2.
3b to be switched back and guided to the sub conveyance path P2, and again pass through the main conveyance path Pi to form an image on the surface opposite to the above-mentioned image surface.
from there onto the first discharge tray 24. Alternatively, an image is formed on one side of the sheet material with the first flapper 27 and the second flapper 28 set to the chain line positions, and the image is switched back by the second discharge roller pair 25a and 25b.
The flapper 28 is set to the solid line position and guided to the sub conveyance path P2, images are formed on both sides of the sheet material through the main conveyance path P1, and the second flapper 28 is returned to the chain line position and the second discharge roller pair 25a, 25b is guided. The second discharge tray 26 is used for discharging the paper to the second discharge tray 26.
第２図・第３図は前記第１図の画像形成装置における主
搬送経路Ｐ１と副搬送経路Ｐ２を開放した状態を表わす
。2 and 3 show a state in which the main conveyance path P1 and the sub conveyance path P2 in the image forming apparatus shown in FIG. 1 are opened.
図中Ｕｌは副搬送経路Ｐ２を構成する部材の一部を一体
−化した第１のシート材搬送系ユニット（以下、第１ユ
ニツトという）であり、図示例においては副搬送経路Ｐ
２の一部を構成するガイド板１８ｂ−１９ｂ−２０ｂと
ガイド板１９ａの一部および搬送ローラ２１ｂ・２２ａ
・２２ｂを共通の支持部材２９に一体的に設けたもので
ある。In the figure, Ul denotes a first sheet material conveyance system unit (hereinafter referred to as the first unit) that integrates some of the members constituting the sub-conveyance path P2, and in the illustrated example, the sub-conveyance path P
Guide plates 18b-19b-20b, a part of guide plate 19a, and conveyance rollers 21b and 22a, which constitute a part of
- 22b is integrally provided on a common support member 29.
上記の第１ユニツ）Ｕｌは装置本体１に支軸３０を中心
に回動可能に取付けられている。３１は上記ユニッ）Ｕ
ｌを装置本体１に対して閉じた状態に保持するための第
１の係止レバーであり、装置本体ｌに設けた係止ピン３
２に係脱させる構成である。The above-mentioned first unit) Ul is attached to the apparatus main body 1 so as to be rotatable about a support shaft 30. 31 is the above unit) U
This is a first locking lever for holding the device l in a closed state with respect to the device main body 1, and is a locking pin 3 provided on the device main body l.
2.
Ｕ２は副搬送経路Ｐ２を構成する前記以外の部材と主搬
送経路Ｐ１を構成する部材の一部とを一体化した第２の
シート材搬送系ユニット（以下、第２ユニツトという）
であり、図示例においては副搬送経路Ｐ２の一部を構成
する前記以外のガイド板１８ａφ２０ａとガイド板１９
ａの一部および搬送ローラ２１ａ、並びに主搬送経路Ｐ
１の一部を構成するレジストローラ１３ｂ−シート材搬
送ベルト１４および転写分離帯電器５とを共通の支持部
材３３に一体的に設けたものである。U2 is a second sheet material conveyance system unit (hereinafter referred to as a second unit) that integrates members other than those mentioned above that constitute the sub conveyance path P2 and some of the members that constitute the main conveyance path P1.
In the illustrated example, a guide plate 18aφ20a and a guide plate 19 other than those described above constitute a part of the sub-transport path P2.
a part of a, the conveyance roller 21a, and the main conveyance path P
The registration roller 13b, the sheet material conveyance belt 14, and the transfer/separation charger 5, which constitute a part of the image forming apparatus 1, are integrally provided on a common support member 33.
上記第２ユニツ）Ｕ２は、前記第１二二ツ）Ｕｌに支軸
３４を中心に回動可能に取付けられている。３５はその
第２ユニツトＵ２を第１ユニツトＵｌに対して閉じた状
態に保持させるためのｆＪＩＪ２の係止レバーであり、
第に二ッ）Ｕｌに設けた係止ピン３６に係脱させる構成
である。The second unit) U2 is rotatably attached to the first unit 22) Ul about a support shaft 34. 35 is a locking lever of fJIJ2 for holding the second unit U2 in a closed state with respect to the first unit Ul;
2) It is configured to engage and disengage from a locking pin 36 provided at Ul.
前記第１図の状態から第１の係上レバー３１の係止ピン
３２との係合部３１ａと反対側の端部３１ｂをつまみ上
げることにより係止ピン３２との係合が解除され、第に
二ッ）Ｕｌを第２ユニツトＵ２と共に支軸３０を中心に
第２図のように回動させると、主搬送経路Ｐ１が大きく
開放され、該搬送経路Ｐｌ内にジャムしたシート材を容
易に除去することができる。From the state shown in FIG. 1, by pinching up the end 31b of the first locking lever 31 opposite to the engaging portion 31a with the locking pin 32, the engagement with the locking pin 32 is released, and the first locking lever 31 is released from the locking pin 32. 2) When the Ul is rotated together with the second unit U2 about the support shaft 30 as shown in FIG. Can be removed.
また第２図の状態から第２の係止レバー３５をつまみ上
げることにより係止ピン３６との係合が解除され、第２
二二ツ）Ｕ２を支軸３４を中心に第３図のように回動す
ることにより副搬送経路Ｐ２が開放状態となり、該経路
Ｐ２内にジャムしたシート材を容易に除去することがで
きる。なおジャムしたシート材を除去した後、第１ユニ
ツトＵ１を装置本体側へ回動することにより第１と第２
の係止レバー３１・３５はそれぞれ自動的に係１ヒピン
３２・３６に係合して第１図の状態に保持される。Also, by pinching up the second locking lever 35 from the state shown in FIG. 2, the engagement with the locking pin 36 is released, and the second
22) By rotating U2 about the support shaft 34 as shown in FIG. 3, the sub conveyance path P2 is opened, and the sheet material jammed in the path P2 can be easily removed. After removing the jammed sheet material, the first and second units are removed by rotating the first unit U1 toward the main body of the apparatus.
The locking levers 31 and 35 automatically engage the locking pins 32 and 36, respectively, and are held in the state shown in FIG.
上述のように第１と第２の二二ッ）Ｕｌ−Ｕ２を一体重
に装置本体ｌの外部方向へ移動させることにより各搬送
経路Ｐ１・Ｐ２を広くあけることが可能になりジャム処
理等のメンテナンスの作業性を大幅に向上させることが
できる。また二二ツ）Ｕｌ・Ｕ２の開放、復帰の動作が
単純かつ少ないため、前記従来のようにシート材搬送経
路を構成する部材をいくつかに分割し、各々のユニット
等を開放状態にし、ジャム処理した後、搬送状態にもど
すという作業に比較して、時間が短縮され、また作業者
のジャム紙取り忘れや、上記ユニット等の戻し忘れとい
ったミスも防止することが可能となる。As mentioned above, by moving the first and second 2) Ul-U2 as one body toward the outside of the device main body l, it is possible to widen each conveyance path P1 and P2, making it possible to clear jams, etc. Maintenance workability can be greatly improved. Also, since the opening and returning operations of Ul and U2 are simple and small, the members constituting the sheet material conveyance path are divided into several parts as in the conventional method, and each unit is left in an open state to prevent jams. Compared to the task of returning the paper to the conveyed state after processing, the time is shortened, and it is also possible to prevent mistakes such as the worker forgetting to remove jammed paper or forgetting to return the unit, etc.
第４図は本発明の第２の実施例を示すもので、前記第１
〜３図例における装置本体ｌと第２ユニツ）Ｕ２との間
、および第１と第２のユニットＵｌ・Ｕ２との間に両ユ
ニットを開き状態に保持させるためのワイヤ３７ａ・３
７ｂを設けたものである。３８ａ〜３８ｃはそのワイヤ
３７ａ・３７ｂの固定ピンである。FIG. 4 shows a second embodiment of the present invention.
~3 Wires 37a and 3 between the device main body l and the second unit U2 and between the first and second units Ul and U2 to keep both units open
7b is provided. 38a to 38c are fixing pins for the wires 37a and 37b.
第に二ツ）Ｕｌと装置本体１との間には前記例と同様に
係止レバー３１と係止ビン（図の場合は固定ピン３８ａ
と共用されている）３２が設けられているが、第１と第
２のユニツ）Ｕｌ−０２との間の係止レバー３５と係止
ピン３６は省略されている。他の構成は前記第１〜３図
例の場合と同様である。(2) Between Ul and the main body 1, there is a locking lever 31 and a locking pin (fixing pin 38a in the case of the figure) as in the previous example.
A locking lever 35 and a locking pin 36 between the first and second units) Ul-02 are provided, but the locking lever 35 and locking pin 36 are omitted. The other configurations are the same as those in the examples shown in FIGS. 1 to 3 above.
第１と第２のユニツ）Ｕｌ−１Ｊ２を閉じた状態から上
記の係止レバー３１と係止ビン３２との係合を解除して
第１ユニツトＵ１を支軸３０を中心に図で右方に回動す
ると両ユニー２トＵ１・Ｕ２がそれぞれ支軸３０・３４
を中心に第４図のように扇状に開きワイヤ３７ａ・３７
ｂの張力でその状態に保持される。なお上記の両二二ツ
）Ｕｌ・Ｕ２は同一の支軸３０を中心に開くように構成
することもできる。1st and 2nd units) From the closed state of Ul-1J2, release the engagement between the locking lever 31 and the locking pin 32, and move the first unit U1 to the right in the figure around the spindle 30. When rotated to
The wires 37a and 37 are opened in a fan shape as shown in FIG.
It is held in that state with a tension of b. Note that the above-mentioned two (22) Ul and U2 can also be configured to open around the same support shaft 30.
上記のように単純な動作により主搬送経路Ｐ１と副搬送
経路Ｐ２とが同時に開放状態となり、しかも大きく開く
ためにジャムしたシート材の除去作業が容易であり、短
時間で作業を終了することができる。また上記の除去作
業終了後、第１ユニツ）Ｕｌを装置本体方向へ回動する
ことにより係止レバー３１は自動的に係止ビン３２に係
合し、再搬送経路Ｐ１・Ｐ２を通常の閉じた状態に保持
させることができる。従って復帰動作も単純かつ１つの
動作で完了するため操作が容易であり操作ミスも少ない
。As described above, the main conveyance path P1 and the sub-conveyance path P2 are opened at the same time by the simple operation, and since they are wide open, it is easy to remove jammed sheet material, and the work can be completed in a short time. can. Furthermore, after the above removal work is completed, by rotating the first unit (U) toward the main body of the apparatus, the locking lever 31 automatically engages with the locking bin 32, and the re-transport paths P1 and P2 are closed normally. It can be kept in the same state. Therefore, the return operation is simple and can be completed in one operation, so the operation is easy and there are fewer operational errors.
第５〜７図は本発明の第３の実施例を示すもので、前記
第１実施例における主搬送経路Ｐ１と副搬送経路Ｐ２と
を各別にワンタッチで開放できるようにした例を示す。5 to 7 show a third embodiment of the present invention, and show an example in which the main transport path P1 and the sub-transport path P2 in the first embodiment can be opened separately with a single touch.
本実施例における第２ユニツ）Ｕ２は第１ユニツ）Ｕｌ
と同一の支軸３０を中心に開閉可能である。さらに第１
ユニツ）Ｕｌを閉じた状態に保持する第１の係止レバー
３１と係止ビン３２は第１と第２のユニツ）Ｕｌ・Ｕ２
との間に、また第２ユニツ）Ｕ２を閉じた状態に保持す
る第２の係止レバー３５と係止ビン３６は第２二二ツ）
Ｕ２と装置本体１との間にそれぞれ対応的に設けられて
いる。他の構成は前記第１〜３図例の場合とほぼ同様で
ある。In this example, the second unit) U2 is the first unit) Ul
It can be opened and closed around the same support shaft 30. Furthermore, the first
The first locking lever 31 and locking pin 32 that hold the unit) Ul in a closed state are connected to the first and second units) Ul and U2.
A second locking lever 35 and a locking pin 36 that hold the second unit U2 in a closed state are located between the second unit U2 and the second locking pin 36.
They are provided correspondingly between U2 and the device main body 1, respectively. The other configurations are almost the same as those in the examples shown in FIGS. 1 to 3 above.
上記の構成において、副搬送経路Ｐ２にシート材がジャ
ムした場合は、第１の係止レバー３１の外側をつまみ上
げて係止ビン３２との係合を解除し、第１ユニツトＵ１
を支軸３０を中心に第６図のように開くことにより副搬
送経路Ｐ２が開放状態となり、該経路Ｐ２内にジャムし
たシート材を除去することができる。また主搬送経路Ｐ
ｌ内においてジャムが発生した場合は、第２の係止レバ
ー３５をつまみ上げて係止ビン３６との係合を解除し、
第２ユニツトＵ２を第に二ッ）Ｕｌと共に支軸３０を中
心に第７図のように開くことにより、主搬送経路Ｐｉが
開放され、該経路Ｐｌ内にジャムしたシート材を除去す
ることができる。In the above configuration, if the sheet material jams in the sub conveyance path P2, the outside of the first locking lever 31 is pinched up to release the engagement with the locking bin 32, and the first unit U1
By opening the sub-transport path P2 as shown in FIG. 6 around the support shaft 30, the sub-transport path P2 is opened, and the sheet material jammed in the path P2 can be removed. Also, the main transport route P
If a jam occurs in the latch, pinch up the second locking lever 35 to disengage it from the locking bottle 36,
By opening the second unit U2 together with the second unit U1 about the support shaft 30 as shown in FIG. 7, the main conveyance path Pi is opened, and the sheet material jammed in the path Pl can be removed. can.
従ってシート材がジャムした場所によって第１と第２の
係止レバー３１・３５を使い分けることにより、各搬送
経路Ｐ２・Ｐｌを選択的にワンタッチで開放状態にして
容易にジャムしたシート材を処理することが可能である
。Therefore, by selectively using the first and second locking levers 31 and 35 depending on the location where the sheet material is jammed, each conveyance path P2 and Pl can be selectively opened with a single touch to easily dispose of the jammed sheet material. Is possible.
なお、前記各実施例はレーザビームプリンタを例にして
説明したが、これに限定されず例えば両面コピー可能な
複写機等に適用しても同様の効果が得られる。Although each of the above embodiments has been described using a laser beam printer as an example, the present invention is not limited to this, and similar effects can be obtained even if the present invention is applied to, for example, a copying machine capable of double-sided copying.
ハ１発明の詳細
な説明したように本発明によれば、前記のようにシート
材副搬送経路を構成する部材の一部を一体化した第１の
シート材搬送系ユニットと、上記以外の副搬送経路を構
成する部材および主搬送経路を構成する部材の一部を一
体化した第２のシート材搬送系ユニットとを装置本体に
対して外側−回動可能に構成して主搬送経路と副搬送経
路とを開放し得るようにしたから、上記両搬送経路を構
成する部材が互いに干渉することなく両搬送経路を大き
く開放させることが可能となり、各搬送経路内にジャム
したシート材を短時間に能率よく除去することができる
。しかも単純な少ない動作で各搬送経路を開放状態に、
もしくは通常の使用状態に復帰させることが可能となり
、ジャム処理後に上記のユニットを元の位置に戻し忘れ
るといった操作ミスを防ぐこともできる等の効果がある
。C1 As described in detail, according to the present invention, there is provided a first sheet material conveyance system unit that integrates a part of the members constituting the sheet material sub-conveyance path as described above, and a sub-conveyance system unit other than the above. A second sheet material conveying system unit that integrates the members constituting the conveyance path and a part of the members constituting the main conveyance path is configured to be rotatable outward relative to the main body of the apparatus, so that the main conveyance path and the sub-conveyance path are connected to each other. Since the conveyance path can be opened, it is possible to widely open both conveyance paths without the members constituting the two conveyance paths interfering with each other. can be removed efficiently. Moreover, each conveyance path can be opened with a few simple movements.
Alternatively, it becomes possible to return to the normal usage state, and there are effects such as being able to prevent operational errors such as forgetting to return the unit to its original position after clearing the jam.
第１図は本発明の第１の実施例を示すレーザビームプリ
ンタの断面図、第２図・第３図はシート材搬送経路を開
放した状態の一部の同上図、第４図は本発明の第２の実
施例の断面図、第５図は本発明の第３の実施例の断面図
、第６図串第７図はシート材搬送経路を開放した状態の
一部の同上図、第８図は従来のレーザビームプリンタの
断面図である。
ｌは装置本体、２は感光ドラム、ｌＯはシート材給送カ
セット、１１は給送ローラ、２３ａ・２３ｂ、２５ａ・
２５ｂはシート材排出ローラ、２４・２６は排出トレイ
、Ｓはシート材、ＰＩはシート材主搬送経路、Ｐ２はシ
ート材副搬送経路、Ｕｌは第１のシート材搬送系二二ッ
）、 Ｕ２は第２のシート材搬送系ユニット。FIG. 1 is a cross-sectional view of a laser beam printer showing a first embodiment of the present invention, FIGS. 2 and 3 are views of a part of the same with the sheet material conveyance path opened, and FIG. 4 is a cross-sectional view of a laser beam printer according to the present invention. FIG. 5 is a cross-sectional view of the third embodiment of the present invention, FIG. FIG. 8 is a sectional view of a conventional laser beam printer. 1 is the main body of the apparatus, 2 is a photosensitive drum, 1O is a sheet material feeding cassette, 11 is a feeding roller, 23a, 23b, 25a,
25b is a sheet material discharge roller, 24 and 26 are discharge trays, S is a sheet material, PI is a sheet material main conveyance path, P2 is a sheet material sub conveyance path, Ul is a first sheet material conveyance system (22), U2 is the second sheet material conveyance system unit.
Claims (1)
は中間的なシート材排出部に至るシート材主搬送経路と
、両面画像形成時に上記主搬送経路を通過して片面側に
画像形成のなされたシート材を再び主搬送経路に導くシ
ート材副搬送経路とを有し、 上記副搬送経路を構成する部材の一部を一体化した第１
のシート材搬送系ユニットと、上記以外の副搬送経路を
構成する部材および主搬送経路を構成する部材の一部を
一体化した第２のシート材搬送系ユニットとを、装置本
体に対して外側に回動可能に構成して上記主搬送経路と
副搬送経路とを開放し得るようにしたことを特徴とする
画像形成装置。 ２、上記第１と第２のシート材搬送系ユニットを装置本
体に対して同時に同一方向に回動することにより主搬送
経路が開放状態となり、さらにその状態から第２のシー
ト材搬送系ユニットを上記と反対方向に回動することに
より副搬送経路が開放状態となるように構成したことを
特徴とする特許請求の範囲第１項記載の画像形成装置。 ３、上記第１のシート材搬送系ユニットを回動すること
により、それに連動して第２のシート材搬送系ユニット
が同一方向に回動して主搬送経路と副搬送経路とが同時
に開放されるように構成したことを特徴とする特許請求
の範囲第１項記載の画像形成装置。 ４、上記第１のシート材搬送系ユニットもしくは第２の
シート材搬送系ユニットを回動することによりシート材
副搬送経路もしくはシート材主搬送経路を選択的に開放
し得るように構成したことを特徴とする特許請求の範囲
第１項記載の画像形成装置。[Claims] 1. A sheet material main transport path from the sheet material feeding section to the final or intermediate sheet material discharge section via the image forming section, and A first sheet material sub-transport path that guides the sheet material on which an image has been formed on one side to the main transport path again, and a part of the members constituting the sub-transport path is integrated.
The sheet material transport system unit and the second sheet material transport system unit, which integrates parts of the sub transport path other than those mentioned above and parts of the main transport path, are installed outside of the main body of the apparatus. An image forming apparatus characterized in that the image forming apparatus is configured to be rotatable so that the main transport path and the sub transport path can be opened. 2. By simultaneously rotating the first and second sheet material conveyance system units in the same direction with respect to the apparatus main body, the main conveyance path is opened, and from this state, the second sheet material conveyance system unit is opened. 2. The image forming apparatus according to claim 1, wherein the sub conveyance path is opened by rotating in the opposite direction. 3. By rotating the first sheet material conveyance system unit, the second sheet material conveyance system unit is rotated in the same direction in conjunction with the rotation, and the main conveyance path and the sub conveyance path are simultaneously opened. 2. The image forming apparatus according to claim 1, wherein the image forming apparatus is configured such that: 4. The sheet material auxiliary conveyance path or the sheet material main conveyance path can be selectively opened by rotating the first sheet material conveyance system unit or the second sheet material conveyance system unit. An image forming apparatus according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62248886A JPH0818724B2 (en) | 1987-10-01 | 1987-10-01 | Image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62248886A JPH0818724B2 (en) | 1987-10-01 | 1987-10-01 | Image forming device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0192135A true JPH0192135A (en) | 1989-04-11 |
| JPH0818724B2 JPH0818724B2 (en) | 1996-02-28 |
Family
ID=17184905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62248886A Expired - Lifetime JPH0818724B2 (en) | 1987-10-01 | 1987-10-01 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0818724B2 (en) |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02276742A (en) * | 1989-04-14 | 1990-11-13 | Seiko Epson Corp | Electronic photograph recording device |
| JPH0339758A (en) * | 1989-07-06 | 1991-02-20 | Seiko Epson Corp | Page printer |
| JPH0527505A (en) * | 1991-09-20 | 1993-02-05 | Olympus Optical Co Ltd | Both-side image recorder |
| JPH0580613A (en) * | 1991-09-25 | 1993-04-02 | Fujitsu Ltd | Both-sides printing device |
| US6125251A (en) * | 1998-04-14 | 2000-09-26 | Sharp Kabushiki Kaisha | Image forming device having internal access capability |
| JP2002037541A (en) * | 2000-07-25 | 2002-02-06 | Canon Inc | Image forming device |
| US6796736B1 (en) | 1998-04-14 | 2004-09-28 | Sharp Kabushiki Kaisha | Image forming device having front and side covers |
| JP2006064727A (en) * | 2004-08-24 | 2006-03-09 | Ricoh Co Ltd | Image forming apparatus |
| JP2006151589A (en) * | 2004-11-29 | 2006-06-15 | Ricoh Co Ltd | Both-sided reverse feeding device and image forming apparatus |
| JP2007047571A (en) * | 2005-08-11 | 2007-02-22 | Canon Inc | Image forming device |
| JP2008292671A (en) * | 2007-05-23 | 2008-12-04 | Kyocera Mita Corp | Image forming apparatus |
| CN100456144C (en) * | 2003-03-20 | 2009-01-28 | 兄弟工业株式会社 | Image forming device |
| JP2009069641A (en) * | 2007-09-14 | 2009-04-02 | Ricoh Co Ltd | Harness guide device, electronic equipment, and image forming device |
| JP2009223203A (en) * | 2008-03-18 | 2009-10-01 | Fuji Xerox Co Ltd | Opening and closing mechanism and image forming apparatus |
| JP2009232192A (en) * | 2008-03-24 | 2009-10-08 | Kyocera Mita Corp | Original conveyance apparatus, and image forming apparatus equipped with the same |
| JP2009232194A (en) * | 2008-03-24 | 2009-10-08 | Kyocera Mita Corp | Original conveyance apparatus, and image forming apparatus mounted with the same |
| JP2010117715A (en) * | 2008-10-16 | 2010-05-27 | Canon Inc | Sheet conveying device and image forming device |
| US8837987B2 (en) | 2011-03-18 | 2014-09-16 | Konica Minolta Business Technologies, Inc. | Image forming apparatus with first and second interlocking doors |
| JP2014240326A (en) * | 2013-05-14 | 2014-12-25 | 株式会社東芝 | Sheet processing apparatus and decoloring device |
| JP2015060003A (en) * | 2013-09-17 | 2015-03-30 | 京セラドキュメントソリューションズ株式会社 | Exhaust structure of image formation device |
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1987
- 1987-10-01 JP JP62248886A patent/JPH0818724B2/en not_active Expired - Lifetime
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| JPH02276742A (en) * | 1989-04-14 | 1990-11-13 | Seiko Epson Corp | Electronic photograph recording device |
| JPH0339758A (en) * | 1989-07-06 | 1991-02-20 | Seiko Epson Corp | Page printer |
| JPH0527505A (en) * | 1991-09-20 | 1993-02-05 | Olympus Optical Co Ltd | Both-side image recorder |
| JPH0580613A (en) * | 1991-09-25 | 1993-04-02 | Fujitsu Ltd | Both-sides printing device |
| US6125251A (en) * | 1998-04-14 | 2000-09-26 | Sharp Kabushiki Kaisha | Image forming device having internal access capability |
| US6796736B1 (en) | 1998-04-14 | 2004-09-28 | Sharp Kabushiki Kaisha | Image forming device having front and side covers |
| JP2002037541A (en) * | 2000-07-25 | 2002-02-06 | Canon Inc | Image forming device |
| CN100456144C (en) * | 2003-03-20 | 2009-01-28 | 兄弟工业株式会社 | Image forming device |
| US7596341B2 (en) | 2003-03-20 | 2009-09-29 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus with vertically arranged process units |
| JP2006064727A (en) * | 2004-08-24 | 2006-03-09 | Ricoh Co Ltd | Image forming apparatus |
| JP4724395B2 (en) * | 2004-08-24 | 2011-07-13 | 株式会社リコー | Image forming apparatus |
| JP2006151589A (en) * | 2004-11-29 | 2006-06-15 | Ricoh Co Ltd | Both-sided reverse feeding device and image forming apparatus |
| JP2007047571A (en) * | 2005-08-11 | 2007-02-22 | Canon Inc | Image forming device |
| JP2008292671A (en) * | 2007-05-23 | 2008-12-04 | Kyocera Mita Corp | Image forming apparatus |
| JP2009069641A (en) * | 2007-09-14 | 2009-04-02 | Ricoh Co Ltd | Harness guide device, electronic equipment, and image forming device |
| JP2009223203A (en) * | 2008-03-18 | 2009-10-01 | Fuji Xerox Co Ltd | Opening and closing mechanism and image forming apparatus |
| JP2009232194A (en) * | 2008-03-24 | 2009-10-08 | Kyocera Mita Corp | Original conveyance apparatus, and image forming apparatus mounted with the same |
| JP2009232192A (en) * | 2008-03-24 | 2009-10-08 | Kyocera Mita Corp | Original conveyance apparatus, and image forming apparatus equipped with the same |
| JP2010117715A (en) * | 2008-10-16 | 2010-05-27 | Canon Inc | Sheet conveying device and image forming device |
| US8837987B2 (en) | 2011-03-18 | 2014-09-16 | Konica Minolta Business Technologies, Inc. | Image forming apparatus with first and second interlocking doors |
| JP2014240326A (en) * | 2013-05-14 | 2014-12-25 | 株式会社東芝 | Sheet processing apparatus and decoloring device |
| JP2015060003A (en) * | 2013-09-17 | 2015-03-30 | 京セラドキュメントソリューションズ株式会社 | Exhaust structure of image formation device |
| CN107250012B (en) * | 2015-04-06 | 2019-01-22 | 京瓷办公信息***株式会社 | Image forming apparatus |
| CN107250012A (en) * | 2015-04-06 | 2017-10-13 | 京瓷办公信息***株式会社 | Image processing system |
| JPWO2016163328A1 (en) * | 2015-04-06 | 2017-12-07 | 京セラドキュメントソリューションズ株式会社 | Image forming apparatus |
| WO2016163328A1 (en) * | 2015-04-06 | 2016-10-13 | 京セラドキュメントソリューションズ株式会社 | Image forming apparatus |
| JP2020083642A (en) * | 2018-11-30 | 2020-06-04 | 株式会社リコー | Sheet transport device and image forming device |
| JP2021060518A (en) * | 2019-10-08 | 2021-04-15 | キヤノン株式会社 | Image forming apparatus |
| WO2021193687A1 (en) * | 2020-03-26 | 2021-09-30 | Brother Kogyo Kabushiki Kaisha | Image recording apparatus |
| JP2021155168A (en) * | 2020-03-26 | 2021-10-07 | ブラザー工業株式会社 | Image recording device |
| US11465429B2 (en) | 2020-03-26 | 2022-10-11 | Brother Kogyo Kabushiki Kaisha | Image recording apparatus |
| US11738583B2 (en) | 2020-03-26 | 2023-08-29 | Brother Kogyo Kabushiki Kaisha | Image recording apparatus |
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|---|---|
| JPH0818724B2 (en) | 1996-02-28 |
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