JPH11349190A - Paper feeding device for picture image forming device - Google Patents
Paper feeding device for picture image forming deviceInfo
- Publication number
- JPH11349190A JPH11349190A JP10176698A JP17669898A JPH11349190A JP H11349190 A JPH11349190 A JP H11349190A JP 10176698 A JP10176698 A JP 10176698A JP 17669898 A JP17669898 A JP 17669898A JP H11349190 A JPH11349190 A JP H11349190A
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- roller pair
- separation
- image forming
- paper
- 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.)
- Pending
Links
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Registering Or Overturning Sheets (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Handling Of Cut Paper (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は複写機等の画像形成
装置の給紙装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet feeding device for an image forming apparatus such as a copying machine.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】現在の
複写機プリンタ、ファクシミリ等の画像形成装置におい
ては、出力画像の品質の高さが求められ、このため特
に、用紙斜行によるスキューの改善が望まれている。2. Description of the Related Art In current image forming apparatuses such as copier printers and facsimile machines, high quality of output images is required, and therefore, particularly, skew due to skew of paper is improved. Is desired.
【０００３】しかしながら現状では、給紙装置から繰り
出された用紙が斜行した場合、中間搬送ローラとレジス
トローラにより斜行を矯正された用紙が中間搬送ローラ
とレジストローラによりストレスを受け、レジストロー
ラによりシワが発生するという不具合がある。またこの
シワの発生を低減させるため、レジストローラの端部を
削って径を小さくし、ローラの形状を団子状にすること
で用紙のシワの発生を低減させる技術が提案されている
が、逆にレジストでのスキュー補正能力が低下するとい
う現象を招いている。また特開平７−２６１５７３号公
報には、レジストローラ搬送力解除機構を設けて画像へ
の影響をなくす技術が提案されているが、これについて
も同様である。However, under the present circumstances, when the sheet fed from the sheet feeding device skews, the sheet whose skew has been corrected by the intermediate conveyance roller and the registration roller is stressed by the intermediate conveyance roller and the registration roller, and is subjected to the stress by the registration roller. There is a problem that wrinkles occur. In order to reduce the occurrence of wrinkles, a technique has been proposed in which the end of the registration roller is cut to reduce the diameter, and the shape of the rollers is reduced to a dumpling shape, thereby reducing the occurrence of paper wrinkles. This causes a phenomenon that the skew correction ability of the resist is reduced. Also, Japanese Patent Application Laid-Open No. Hei 7-261573 proposes a technique of providing a registration roller conveyance force canceling mechanism to eliminate the influence on an image. The same applies to this technique.
【０００４】本発明は、上記従来の問題点に鑑み、レジ
ストでのスキュー補正能力を低下させずにシワの発生を
押さえ得る画像形成装置の給紙装置を提供することを目
的とする。An object of the present invention is to provide a paper feeder of an image forming apparatus capable of suppressing generation of wrinkles without deteriorating the skew correction ability at a resist in view of the above-mentioned conventional problems.
【０００５】[0005]
【課題を解決するための手段】本発明の画像形成装置の
給紙装置のうち請求項１に係るものは、上記目的を達成
するために、用紙分離手段及び中間搬送ローラ対、レジ
ストローラ対を有する画像形成装置の給紙装置におい
て、上記中間搬送ローラ対をなすローラを接離させる手
段と、上記用紙分離手段を解除する分離解除手段を有す
ることを特徴とする。According to a first aspect of the present invention, there is provided a sheet feeding device for an image forming apparatus, comprising: a sheet separating unit, an intermediate conveying roller pair, and a registration roller pair. In the sheet feeding device of the image forming apparatus having the above, the sheet feeding device is characterized in that it has means for bringing the rollers forming the intermediate conveying roller pair into and out of contact, and separation releasing means for releasing the sheet separating means.
【０００６】同請求項２に係るものは、上記接離手段に
よる上記中間搬送ローラ対の離間を、上記レジストロー
ラ対による用紙搬送開始後に行うことを特徴とする。According to another aspect of the present invention, the separation of the pair of intermediate conveyance rollers by the contact / separation means is performed after the start of sheet conveyance by the pair of registration rollers.
【０００７】同請求項３に係るものは、上記接離手段に
よる上記中間搬送ローラ対の離間以前に上記分離解除手
段により上記用紙分離手段を解除することを特徴とす
る。According to a third aspect of the present invention, the sheet separating means is released by the separation releasing means before the separation of the intermediate conveyance roller pair by the contact / separation means.
【０００８】[0008]
【発明の実施の形態】以下本発明の実施の形態を図面を
参照して説明する。図１は本発明に係る給紙装置の設置
対象となる電子写真方式の印刷機の一例の全体を概略的
に示す断面図である。印刷装置１は主に、給紙カセット
２、用紙分離部３、給紙搬送部４、画像形成部５、定着
部６、排紙部７からなる。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view schematically showing an entire example of an electrophotographic printing machine to which a sheet feeding device according to the present invention is installed. The printing apparatus 1 mainly includes a paper feed cassette 2, a paper separating unit 3, a paper feed unit 4, an image forming unit 5, a fixing unit 6, and a paper discharging unit 7.
【０００９】給紙カセット２から給紙された用紙Ｐは、
用紙分離部３により１枚ずつ搬送され、中間搬送ローラ
対４１によりレジストローラ対４２に送り込まれる。レ
ジストローラ対４２は、光書込み部５１による光書き込
みとの同期をとって用紙Ｐを画像形成部５へと送り出
す。その後、用紙Ｐは定着部６を通過し、排紙部７へ排
出され、印刷が終了する。The paper P fed from the paper feed cassette 2 is
The sheet is conveyed one by one by the sheet separating unit 3 and sent to the registration roller pair 42 by the intermediate conveyance roller pair 41. The registration roller pair 42 sends out the paper P to the image forming unit 5 in synchronization with the optical writing by the optical writing unit 51. Thereafter, the paper P passes through the fixing unit 6 and is discharged to the paper discharge unit 7, and printing is completed.
【００１０】中間搬送ローラ対４１は、用紙分離部３の
負荷をレジストローラ対４２へ伝えないために用紙搬送
力を高めてあり、またレジストローラ対４２の駆動時は
常に回転駆動される。The intermediate conveying roller pair 41 has a high sheet conveying force in order not to transmit the load of the sheet separating section 3 to the registration roller pair 42, and is always driven to rotate when the registration roller pair 42 is driven.
【００１１】なお図中５２は現像装置、５３は感光体、
５４は転写装置、５５はクリーニング装置である。In the figure, 52 is a developing device, 53 is a photoreceptor,
54 is a transfer device, and 55 is a cleaning device.
【００１２】図２は給紙搬送部４の全体を示す断面図で
ある。給紙カセット２内に収容された印刷用紙Ｐは、用
紙分離部３により１枚ずつ給紙され、中間搬送ローラ対
４１へ送られる。中間搬送ローラ対４１は、用紙Ｐをさ
らにレジストローラ対４２へ送り込む。この時、用紙Ｐ
の先端をレジストセンサ４３が検知し、検知位置からレ
ジストローラ対４２のニップまでの距離に、用紙Ｐの先
端がレジストローラ対４２に突き当たってスキュー補正
のためのたわみを生成するまでの距離を加えた距離の
間、中間搬送ローラ対４１を駆動してその後停止させ
る。その後、感光体５３上の画像と同期を取ってレジス
トローラ対４２を起動させ、同時に中間搬送ローラ対４
１も用紙Ｐを送り出す（図７のタイミングチャート参
照）。なお図中３１は給紙ローラ、４４はグリップセン
サを示す。FIG. 2 is a sectional view showing the entire sheet feeding / conveying section 4. The printing paper P stored in the paper feeding cassette 2 is fed one by one by the paper separating unit 3 and sent to the intermediate transport roller pair 41. The intermediate transport roller pair 41 further feeds the sheet P to the registration roller pair 42. At this time, paper P
Is detected by the registration sensor 43, and the distance from the detection position to the nip of the registration roller pair 42 is added to the distance from the leading end of the sheet P to the registration roller pair 42 to generate a deflection for skew correction. During this distance, the intermediate transport roller pair 41 is driven and then stopped. Thereafter, the registration roller pair 42 is started in synchronization with the image on the photoconductor 53, and at the same time, the intermediate conveyance roller pair 4
1 also sends out the paper P (see the timing chart of FIG. 7). In the figure, 31 is a paper feed roller, and 44 is a grip sensor.
【００１３】次に中間搬送ローラ対４１の接離機構の一
例の詳細を図３を参照して説明する。駆動ローラ４１ａ
に当接させた従動ローラ４１ｂは、回転支点４５を中心
に回転するアームレバー４６に支持され、その反対側の
端部にはソレノイドアクチュエータ４７が連結されてい
る。これを接離ソレノイド４８が吸引する（図中の矢印
Ａ方向）ことにより、アームレバー４６に支持された従
動ローラ４１ｂは、図中の矢印Ｂ方向に回転支点４５を
中心に回動して駆動ローラ４１ａから離間する。この動
作により、用紙Ｐは中間搬送ローラ対４１のグリップ力
から解放され自由となる。なお図中４９は、従動ローラ
４１ｂを駆動ローラ４１ａに当接する加圧スプリングを
示す。Next, the details of an example of the mechanism for contacting and separating the intermediate conveying roller pair 41 will be described with reference to FIG. Drive roller 41a
Is supported by an arm lever 46 that rotates about a rotation fulcrum 45, and a solenoid actuator 47 is connected to the opposite end. This is sucked by the contact / separation solenoid 48 (in the direction of arrow A in the figure), so that the driven roller 41b supported by the arm lever 46 rotates around the rotation fulcrum 45 in the direction of arrow B in the figure and is driven. It is separated from the roller 41a. By this operation, the paper P is released from the gripping force of the intermediate transport roller pair 41 and becomes free. In the drawing, reference numeral 49 denotes a pressure spring for bringing the driven roller 41b into contact with the driving roller 41a.
【００１４】図４は用紙分離部３の構成を示す側面図で
ある。給紙ローラ３１に当接している分離パッド３２
は、図示せぬ加圧スプリングにより常時給紙ローラ３１
に適切な分離圧にて当接している。分離ホルダ３３はソ
レノイドアクチュエータ３５に連結され、これを解除ソ
レノイド３４が図中矢印Ｄ方向へ吸引することにより、
給紙ローラ３１から離間する。この動作により、用紙Ｐ
は給紙ローラ３１と分離パッド３２の摩擦抵抗から解放
され、搬送方向下流側（レジストローラ対４２側）への
負荷がなくなる。FIG. 4 is a side view showing the structure of the sheet separating section 3. As shown in FIG. Separation pad 32 in contact with paper feed roller 31
Is a paper feed roller 31 by a pressure spring (not shown).
At an appropriate separation pressure. The separation holder 33 is connected to a solenoid actuator 35, which is released by the release solenoid 34 sucking in the direction of arrow D in the drawing.
It is separated from the paper feed roller 31. By this operation, the paper P
Is released from the frictional resistance between the paper feed roller 31 and the separation pad 32, and the load on the downstream side in the transport direction (the pair of registration rollers 42) is eliminated.
【００１５】次にレジストローラ対４２によるシワの発
生過程を図５〜図７を参照して説明する。給紙部から斜
行して搬送された用紙Ｐは、その姿勢のまま中間搬送ロ
ーラ対４１によりレジストローラ対４２へと搬送される
（図５Ａ）。用紙Ｐの先端がレジストローラ対４２に突
き当たり、かつ中間搬送ローラ対４１によりたわみ生成
分だけ送り込まれるので、用紙Ｐの先端のみがレジスト
ローラ対４２のアライメントにならい（図６）、中間搬
送ローラ対４１とレジストローラ対４２間で用紙Ｐにゆ
がみＤが生じる（図５Ｂ）。この状態で用紙Ｐが搬送さ
れることにより、用紙ＰのゆがみＤがレジストローラ対
４２によりプレスされてシワＳとなる（図６）。Next, the process of generating wrinkles by the registration roller pair 42 will be described with reference to FIGS. The sheet P skewed and conveyed from the sheet feeding unit is conveyed to the registration roller pair 42 by the intermediate conveyance roller pair 41 in that posture (FIG. 5A). Since the leading end of the paper P abuts on the registration roller pair 42 and is fed by the amount of the deflection generated by the intermediate transport roller pair 41, only the leading end of the paper P follows the alignment of the registration roller pair 42 (FIG. 6). A distortion D occurs in the sheet P between the registration roller 41 and the registration roller pair 42 (FIG. 5B). When the sheet P is transported in this state, the distortion D of the sheet P is pressed by the pair of registration rollers 42 to form wrinkles S (FIG. 6).
【００１６】そこで本実施形態装置では、図示のような
用紙ＰのゆがみＤが発生しても、中間搬送ローラ対４１
をなすローラ４１ａ、４１ｂだけでなく、用紙分離部３
の給紙ローラ３１と分離パッド３２を離間させ、用紙Ｐ
に対するグリップ力をすべて解除する。このことによ
り、用紙Ｐが給紙経路内で完全にフリーとなり、矢印Ｃ
方向にゆがみＤ分だけ戻るため、シワの発生が防がれ
る。Therefore, in the apparatus of this embodiment, even if the distortion D of the paper P as shown in the figure occurs, the intermediate transport roller pair 41
Not only the rollers 41a and 41b forming the
Paper feed roller 31 and separation pad 32
Release all gripping force against As a result, the paper P is completely free in the paper feed path, and the arrow C
Since the distortion is returned in the direction by the amount of D, the occurrence of wrinkles is prevented.
【００１７】次に中間搬送ローラ対４１と用紙分離部３
の離間タイミングを図７により説明する。たわみ生成
後、画像書き込みをトリガーにレジストローラ対４２を
起動し、用紙Ｐを搬送する。これと同期して中間搬送ロ
ーラ対４１も駆動する。用紙Ｐが完全にレジストローラ
対４２の搬送力を得たところ（図中ｔで示す）で接離ソ
レノイド４８、解除ソレノイド３４を動作させる。これ
により確実に用紙Ｐのゆがみが解消され、レジストロー
ラ対４２への用紙搬送負荷がなくなる。Next, the intermediate conveying roller pair 41 and the sheet separating section 3
Will be described with reference to FIG. After the deflection is generated, the registration roller pair 42 is activated with the image writing as a trigger, and the sheet P is conveyed. In synchronization with this, the intermediate transport roller pair 41 is also driven. When the sheet P has completely obtained the conveyance force of the registration roller pair 42 (indicated by t in the drawing), the contact / separation solenoid 48 and the release solenoid 34 are operated. As a result, the distortion of the sheet P is surely eliminated, and the sheet conveyance load on the registration roller pair 42 is eliminated.
【００１８】なお、図示の実施形態では中間搬送ローラ
対４１と用紙分離部３の離間タイミングを一致させて同
時に行うようにしているが、図７中に点線で示すように
用紙分離部３の離間タイミングを中間搬送ローラ対４１
の離間以前に行うようにしてもよい。これによりレジス
トローラ対４２による用紙搬送時の速度ムラや負荷衝撃
が発生しなくなる。In the illustrated embodiment, the separation between the pair of intermediate transport rollers 41 and the sheet separation unit 3 is performed at the same time, but the separation of the sheet separation unit 3 is performed as shown by a dotted line in FIG. Timing is set to intermediate transport roller pair 41
May be performed before the separation. As a result, unevenness in speed and load impact at the time of paper conveyance by the pair of registration rollers 42 do not occur.
【００１９】[0019]
【発明の効果】請求項１に係る画像形成装置の給紙装置
は、以上説明してきたように、中間搬送ローラ対が接離
可能なため、レジストローラ対との用紙搬送方向が用紙
の斜行によりずれても中間搬送ローラ対が離間して用紙
に対するグリップ力を解除し、かつ分離解除手段も解除
するので、用紙へのストレスが完全になくなり、シワの
発生を防ぐことができるという効果がある。As described above, in the paper feeder of the image forming apparatus according to the first aspect, since the intermediate transport roller pair can be moved toward and away from the register roller pair, the paper transport direction with respect to the registration roller pair is skewed. Even if the sheet is misaligned, the intermediate conveying roller pair is separated to release the gripping force on the sheet, and the separation releasing means is also released, so that stress on the sheet is completely eliminated, and the effect of preventing wrinkles from occurring can be obtained. .
【００２０】請求項２に係る画像形成装置の給紙装置
は、以上説明してきたように、中間搬送ローラ対の離間
タイミングを、レジストローラ対による用紙搬送開始後
にすることにより、上記共通の効果に加え、スキューに
よるシワの発生防止をより一層効果的に行え、かつレジ
ストローラ対による用紙搬送時の速度ムラを発生させる
ことなく常に安定した搬送を行うことができるという効
果がある。According to the paper feeder of the image forming apparatus according to the second aspect, as described above, the separation effect of the pair of intermediate conveyance rollers is set after the start of the conveyance of the sheet by the pair of registration rollers, thereby achieving the above common effects. In addition, wrinkles due to skew can be more effectively prevented, and stable conveyance can always be performed without causing speed unevenness when the paper is conveyed by the pair of registration rollers.
【００２１】請求項３に係る画像形成装置の給紙装置
は、以上説明してきたように、中間搬送ローラ対の離間
以前に分離解除手段を解除することにより、上記共通の
効果に加え、レジストローラ対による用紙搬送時の負荷
衝撃を発生させることなく常に安定した搬送を行うこと
ができるという効果がある。According to a third aspect of the present invention, in addition to the above-described common effect, the sheet feeding device of the image forming apparatus releases the separation releasing means before the separation of the intermediate conveying roller pair. There is an effect that stable conveyance can always be performed without generating a load impact when the sheet is conveyed by the pair.
【図１】本発明に係る給紙装置の設置対象となる電子写
真方式の印刷機の一例の全体を概略的に示す断面図であ
る。FIG. 1 is a cross-sectional view schematically showing an entire example of an electrophotographic printing machine to which a paper feeding device according to the present invention is installed.
【図２】図１の装置の給紙搬送部の全体を示す断面図で
ある。FIG. 2 is a cross-sectional view showing the entire sheet feeding and conveying unit of the apparatus shown in FIG.
【図３】中間搬送ローラ対の接離機構の一例の側面図で
ある。FIG. 3 is a side view of an example of a contact / separation mechanism for an intermediate conveyance roller pair.
【図４】用紙分離部の構成を示す側面図である。FIG. 4 is a side view illustrating a configuration of a sheet separating unit.
【図５】レジストローラ対によるシワの発生過程を示す
平面図である。FIG. 5 is a plan view showing a process of generating wrinkles by a pair of registration rollers.
【図６】同斜視図である。FIG. 6 is a perspective view of the same.
【図７】中間搬送ローラ対とレジストローラ対の離間タ
イミングを示すタイミングチャートである。FIG. 7 is a timing chart showing a separation timing between an intermediate conveyance roller pair and a registration roller pair.
１ 印刷装置 ２ 給紙カセット ３ 用紙分離部 ３１ 給紙ローラ ３２ 分離パッド ３３ 分離ホルダ ３４ 解除ソレノイド ３５ ソレノイドアクチュエータ ４ 給紙搬送部 ４１ 中間搬送ローラ対 ４１ａ 駆動ローラ ４１ｂ 従動ローラ ４２ レジストローラ対 ４３ レジストセンサ ４４ グリップセンサ ４５ 回転支点 ４６ アームレバー ４７ ソレノイドアクチュエータ ４８ 接離ソレノイド ４９ 加圧スプリング ５ 画像形成部 ５１ 光書込み部 ５２ 現像装置 ５３ 感光体 ５４ 転写装置 ５５ クリーニング装置 ６ 定着部 ７ 排紙部 Ｐ 用紙 Ｓ シワ REFERENCE SIGNS LIST 1 printing device 2 paper feed cassette 3 paper separation unit 31 paper feed roller 32 separation pad 33 separation holder 34 release solenoid 35 solenoid actuator 4 paper feed conveyance unit 41 intermediate conveyance roller pair 41a drive roller 41b driven roller 42 registration roller pair 43 registration sensor 44 Grip sensor 45 Rotating fulcrum 46 Arm lever 47 Solenoid actuator 48 Contacting / separating solenoid 49 Pressing spring 5 Image forming unit 51 Optical writing unit 52 Developing device 53 Photoconductor 54 Transfer device 55 Cleaning device 6 Fixing unit 7 Paper discharge unit P Paper S Wrinkle
Claims (3)
ジストローラ対を有する画像形成装置の給紙装置におい
て、上記中間搬送ローラ対をなすローラを接離させる手
段と、上記用紙分離手段を解除する分離解除手段を有す
ることを特徴とする画像形成装置の給紙装置。In a paper feeder of an image forming apparatus having a sheet separating unit, an intermediate conveying roller pair, and a registration roller pair, a unit for bringing a roller forming the intermediate conveying roller pair into and out of contact, and releasing the sheet separating unit. A sheet feeding device for an image forming apparatus, comprising a separation canceling unit.
対の離間を、上記レジストローラ対による用紙搬送開始
後に行うことを特徴とする請求項１の画像形成装置の給
紙装置。2. The sheet feeding device for an image forming apparatus according to claim 1, wherein the separation of the pair of intermediate conveyance rollers by the contact / separation means is performed after the start of sheet conveyance by the pair of registration rollers.
対の離間以前に上記分離解除手段により上記用紙分離手
段を解除することを特徴とする請求項１または２の画像
形成装置の給紙装置。3. The sheet feeding device for an image forming apparatus according to claim 1, wherein the sheet separating unit is released by the separation releasing unit before the separation of the intermediate conveyance roller pair by the contacting / separating unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10176698A JPH11349190A (en) | 1998-06-08 | 1998-06-08 | Paper feeding device for picture image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10176698A JPH11349190A (en) | 1998-06-08 | 1998-06-08 | Paper feeding device for picture image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11349190A true JPH11349190A (en) | 1999-12-21 |
Family
ID=16018187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10176698A Pending JPH11349190A (en) | 1998-06-08 | 1998-06-08 | Paper feeding device for picture image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11349190A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001341900A (en) * | 2000-05-31 | 2001-12-11 | Tohoku Ricoh Co Ltd | Printing device |
| JP2006062872A (en) * | 2004-07-28 | 2006-03-09 | Fuji Photo Film Co Ltd | Sheet body carrying device |
| JP2007261703A (en) * | 2006-03-27 | 2007-10-11 | Oki Data Corp | Paper feeding device |
| JP2009286579A (en) * | 2008-05-29 | 2009-12-10 | Seiko Epson Corp | Medium feeding device and recording device |
| JP2011167935A (en) * | 2010-02-18 | 2011-09-01 | Nk Works Kk | Printer |
| JP2013147300A (en) * | 2012-01-17 | 2013-08-01 | Konica Minolta Inc | Sheet carrying apparatus, image reader, and image forming apparatus |
| JP2015016962A (en) * | 2013-07-10 | 2015-01-29 | 株式会社リコー | Paper post processing device, and image formation system |
-
1998
- 1998-06-08 JP JP10176698A patent/JPH11349190A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001341900A (en) * | 2000-05-31 | 2001-12-11 | Tohoku Ricoh Co Ltd | Printing device |
| JP2006062872A (en) * | 2004-07-28 | 2006-03-09 | Fuji Photo Film Co Ltd | Sheet body carrying device |
| JP2007261703A (en) * | 2006-03-27 | 2007-10-11 | Oki Data Corp | Paper feeding device |
| JP2009286579A (en) * | 2008-05-29 | 2009-12-10 | Seiko Epson Corp | Medium feeding device and recording device |
| JP2011167935A (en) * | 2010-02-18 | 2011-09-01 | Nk Works Kk | Printer |
| JP2013147300A (en) * | 2012-01-17 | 2013-08-01 | Konica Minolta Inc | Sheet carrying apparatus, image reader, and image forming apparatus |
| JP2015016962A (en) * | 2013-07-10 | 2015-01-29 | 株式会社リコー | Paper post processing device, and image formation system |
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