JP6907492B2 - Image forming device and reading device - Google Patents

Image forming device and reading device Download PDF

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JP6907492B2
JP6907492B2 JP2016185029A JP2016185029A JP6907492B2 JP 6907492 B2 JP6907492 B2 JP 6907492B2 JP 2016185029 A JP2016185029 A JP 2016185029A JP 2016185029 A JP2016185029 A JP 2016185029A JP 6907492 B2 JP6907492 B2 JP 6907492B2
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recording medium
roll
transport
reading
image
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JP2018048006A (en
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蒔田　聖吾
聖吾 蒔田
細井　清
清 細井
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Fujifilm Business Innovation Corp
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Fuji Xerox Co Ltd
Fujifilm Business Innovation Corp
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Description

本発明は、画像形成装置及び読取装置に関する。 The present invention relates to an image forming apparatus and a reading apparatus.

特許文献１には、原稿がその読み取り面が接する状態で搬送される平坦面を有する透明部材と、該原稿を該透明部材の該平坦面に接触させる状態で搬送する搬送手段と、該透明部材を挟んで該原稿と反対側に該原稿の搬送方向と直交する主走査方向に、少なくとも読み取り対象の原稿の最大幅以上の長さにわたって固定配置され、該搬送手段によって搬送移動される該原稿に対して所定の読み取り位置で該原稿の情報を読み取る読み取り手段と、を備えている画像読み取り装置において、前記透明部材は、前記原稿の接する前記平坦面に、所定幅を有する所定高さの凸部が主走査方向に所定長さにわたって形成され、前記読み取り手段は、前記搬送手段によって搬送される前記原稿が該凸部を乗り越えて該透明部材の該平坦面に接触するまでの原稿が浮き上がっている原稿浮き上がり領域を前記読み取り位置とする状態で配置されていることを特徴とする画像読み取り装置が記載されている。 Patent Document 1 describes a transparent member having a flat surface in which a document is conveyed in contact with a reading surface thereof, a conveying means for conveying the document in a state of being in contact with the flat surface of the transparent member, and the transparent member. Is fixedly arranged on the side opposite to the original in the main scanning direction orthogonal to the conveying direction of the original over a length of at least the maximum width of the original to be read, and is conveyed and moved by the conveying means. On the other hand, in an image reading device including a reading means for reading information on the document at a predetermined reading position, the transparent member is a convex portion having a predetermined width and a predetermined height on the flat surface in contact with the document. Is formed over a predetermined length in the main scanning direction, and the reading means lifts the document until the document transported by the transport means gets over the convex portion and comes into contact with the flat surface of the transparent member. Described is an image reading device characterized in that the document floating region is arranged at the reading position.

特許文献２には、搬送路を搬送方向に搬送される媒体が或る領域を通過するときに当該媒体の第１面のうち当該領域を通過中の部分に対して処理を行う処理手段と、前記領域の前記搬送方向の上流側で、搬送される前記媒体に接触する第１接触部を備える第１接触部材と、前記領域の前記搬送方向の下流側で、搬送される前記媒体に接触し、前記第１接触部と共通の接平面を有する第２接触部を備える第２接触部材と、前記第１及び第２接触部に挟まれた区間において前記第１面が前記接平面を通るように前記媒体を搬送する搬送手段とを具備することを特徴とする搬送装置が記載されている。 Patent Document 2 describes a processing means for processing a portion of the first surface of the medium that is passing through the region when the medium conveyed in the transport direction in the transport path passes through a certain region. A first contact member having a first contact portion that contacts the medium to be transported on the upstream side of the region in the transport direction and a medium that is transported on the downstream side of the region in the transport direction. A second contact member having a second contact plane having a common tangent plane with the first contact portion, and the first surface passing through the tangent plane in a section sandwiched between the first and second contact portions. Describes a transport device including a transport means for transporting the medium.

特開２００９−２２５２０３号公報JP-A-2009-225203 特開２０１５−４１８０９号公報JP-A-2015-41809

搬送中の記録媒体に形成された画像を読み取る場合、記録媒体の搬送速度の変動が小さいことが望ましい。本発明は、記録媒体に対して面接触する支持部を用いて記録媒体を支持する技術と比較して、記録媒体の搬送速度の変動を抑制することができる画像形成装置及び読取装置を提供することを目的とする。 When reading an image formed on a recording medium during transport, it is desirable that the fluctuation in the transport speed of the recording medium is small. The present invention provides an image forming apparatus and a reading apparatus capable of suppressing fluctuations in the transport speed of the recording medium as compared with a technique of supporting the recording medium by using a support portion that comes into surface contact with the recording medium. The purpose is.

請求項１に係る本発明は、記録媒体に画像を形成する画像形成部と、前記画像形成部で画像が形成された記録媒体を搬送する搬送装置と、前記搬送装置で搬送中の記録媒体に形成された画像を読み取る読取装置と、を有し、前記搬送装置は、前記読取装置に対して記録媒体の搬送方向における上流側に配置された第一ロールと当該第一ロールに対向する第一従動ロール、前記読取装置に対して記録媒体の搬送方向における下流側に配置された第二ロールと当該第二ロールに対向する第二従動ロール、及び前記第一ロールと前記第二ロールの、記録媒体の搬送方向における中間部分に配置される二つの支持部と、を有し、当該二つの支持部は、記録媒体を重力方向における下側から支持して記録媒体の上側を開放空間とし、記録媒体の搬送方向と交わる方向に記録媒体に対して線接触するとともに、それぞれの延在方向から見た場合の形状が円形であり、前記支持部の一つは、前記読取装置が画像を読み取る読取領域よりも記録媒体の搬送方向における上流側で記録媒体に線接触し、前記支持部の他の一つは、前記読取装置が画像を読み取る読取領域よりも記録媒体の搬送方向における下流側で記録媒体に線接触する画像形成装置である。 The present invention according to claim 1 applies to an image forming unit that forms an image on a recording medium, a conveying device that conveys a recording medium on which an image is formed by the image forming unit, and a recording medium that is being conveyed by the conveying device. It has a reading device for reading the formed image, and the transport device has a first roll arranged on the upstream side of the reading device in the transport direction of the recording medium and a first roll facing the first roll. Recording of a driven roll, a second roll arranged downstream of the reading device in the transport direction of the recording medium, a second driven roll facing the second roll, and the first roll and the second roll. It has two support portions arranged in an intermediate portion in the transport direction of the medium, and the two support portions support the recording medium from the lower side in the gravity direction , and the upper side of the recording medium is an open space for recording. A line contact with the recording medium is made in a direction intersecting the transport direction of the medium, and the shape when viewed from each extending direction is circular, and one of the support portions is a reading device for reading an image. The recording medium is in line contact with the recording medium on the upstream side in the transport direction of the recording medium from the area, and the other one of the supports is recorded on the downstream side in the transport direction of the recording medium with respect to the reading area in which the reading device reads the image. It is an image forming apparatus that makes line contact with a medium.

請求項２に係る本発明は、画像が形成された記録媒体を搬送する搬送装置と、前記搬送装置で搬送中の記録媒体に形成された画像を読み取る読取装置と、を有し、前記搬送装置は、前記読取装置に対して記録媒体の搬送方向における上流側に配置された第一ロールと当該第一ロールに対向する第一従動ロール、前記読取装置に対して記録媒体の搬送方向における下流側に配置された第二ロールと当該第二ロールに対向する第二従動ロールを有し、前記読取装置は、前記第一ロールと前記第二ロールの、記録媒体の搬送方向における中間部分に配置される二つの支持部であって、記録媒体を重力方向における下側から支持して記録媒体の上側を開放空間とし、記録媒体の搬送方向と交わる方向に記録媒体に対して線接触するとともに、それぞれの延在方向から見た場合の形状が円形である、二つの支持部を有し、前記支持部の一つは、前記読取装置が画像を読み取る読取領域よりも記録媒体の搬送方向における上流側で記録媒体に線接触し、前記支持部の他の一つは、前記読取装置が画像を読み取る読取領域よりも記録媒体の搬送方向における下流側で記録媒体に線接触する読取装置である。 The present invention according to claim 2 includes a transport device for transporting a recording medium on which an image is formed, and a reader for reading an image formed on the recording medium being transported by the transport device. Is a first roll arranged on the upstream side in the transport direction of the recording medium with respect to the reading device, a first driven roll facing the first roll, and a downstream side in the transport direction of the recording medium with respect to the reading device. The reading device has a second roll arranged in the first roll and a second driven roll facing the second roll, and the reading device is arranged in an intermediate portion between the first roll and the second roll in the transport direction of the recording medium. The two support parts support the recording medium from below in the direction of gravity , the upper side of the recording medium is an open space, and the recording medium is in line contact with the recording medium in the direction intersecting the transport direction of the recording medium. It has two support portions having a circular shape when viewed from the extending direction of the image, and one of the support portions is on the upstream side in the transport direction of the recording medium with respect to the reading region in which the reading device reads an image. Another one of the support portions is a reading device that makes line contact with the recording medium on the downstream side in the transport direction of the recording medium from the reading area where the reading device reads an image.

請求項１に係る本発明によれば、記録媒体に対して面接触する支持部を用いて記録媒体を支持する技術と比較して、記録媒体の搬送速度の変動を抑制することができる画像形成装置を提供することができる。また、読取装置が画像を読み取る読取領域の重力方向における下側から記録媒体を支持する技術と比較して、支持部による読取のための光の反射を抑制することができる。 According to the first aspect of the present invention, image formation capable of suppressing fluctuations in the transport speed of the recording medium can be suppressed as compared with a technique of supporting the recording medium by using a support portion that comes into surface contact with the recording medium. Equipment can be provided. Further, as compared with the technique of supporting the recording medium from the lower side in the gravity direction of the reading region in which the reading device reads the image, it is possible to suppress the reflection of light for reading by the supporting portion.

請求項２に係る本発明によれば、記録媒体に対して面接触する支持部を用いて記録媒体を支持する技術と比較して、記録媒体の搬送速度の変動を抑制することができる読取装置を提供することができる。また、読取装置が画像を読み取る読取領域の重力方向における下側から記録媒体を支持する技術と比較して、支持部による読取のための光の反射を抑制することができる。 According to the second aspect of the present invention, a reading device capable of suppressing fluctuations in the transport speed of the recording medium as compared with a technique of supporting the recording medium by using a support portion that comes into surface contact with the recording medium. Can be provided. Further, as compared with the technique of supporting the recording medium from the lower side in the gravity direction of the reading region in which the reading device reads the image, it is possible to suppress the reflection of light for reading by the supporting portion.

本発明の実施形態で用いられる画像形成装置の構成を示す図である。It is a figure which shows the structure of the image forming apparatus used in embodiment of this invention. 本発明の実施形態で用いられる読取装置の構成を示す図である。It is a figure which shows the structure of the reading apparatus used in embodiment of this invention. 本発明の実施形態で用いられる搬送装置の一部を示す図である。It is a figure which shows a part of the transfer apparatus used in embodiment of this invention. 本発明の実施形態で画像が読み取られる用紙の読取領域の周辺を重力方向における上方から示す図である。It is a figure which shows the periphery of the reading area of the paper which the image is read in embodiment of this invention from above in the direction of gravity.

次に、本発明を実施するための形態を図面を参照して説明する。図１には、本発明の実施形態に係る画像形成装置１０が示されている。画像形成装置１０は、画像形成装置本体１２を有し、画像形成装置本体１２内に、画像形成部１００と、冷却装置１５０と、搬送装置２００と、読取装置３００と、給紙装置４００とが配置されている。 Next, a mode for carrying out the present invention will be described with reference to the drawings. FIG. 1 shows an image forming apparatus 10 according to an embodiment of the present invention. The image forming apparatus 10 has an image forming apparatus main body 12, and an image forming unit 100, a cooling device 150, a conveying device 200, a reading device 300, and a feeding device 400 are contained in the image forming apparatus main body 12. Have been placed.

画像形成部１００は、例えば、電子写真方式が採用されていて、記録媒体である用紙に画像を形成する。画像形成部１００は、例えば、６つの画像形成ユニット１１０を有する。画像形成ユニット１１０は、シアン、マゼンダ、イエロー及び黒の他、特別色として、金、銀、透明、白等の中から選択されたトナーを用いて画像を形成するようになっている。 The image forming unit 100, for example, adopts an electrophotographic method and forms an image on paper which is a recording medium. The image forming unit 100 has, for example, six image forming units 110. The image forming unit 110 forms an image by using a toner selected from gold, silver, transparent, white and the like as a special color in addition to cyan, magenta, yellow and black.

画像形成部１００は、中間転写ベルト１２０をさらに有する。中間転写ベルト１２０には、６つの画像形成ユニット１１０で形成されたトナー像がそれぞれに転写され、転写されたトナー像が給紙装置４００から供給された用紙にさらに転写される。 The image forming unit 100 further has an intermediate transfer belt 120. The toner images formed by the six image forming units 110 are transferred to the intermediate transfer belt 120, and the transferred toner images are further transferred to the paper supplied from the paper feeding device 400.

画像形成部１００は、定着装置１３０をさらに有する。定着装置１３０は、用紙に転写されたトナー像を、例えば熱と圧力とを用いて用紙に転写する。 The image forming unit 100 further includes a fixing device 130. The fixing device 130 transfers the toner image transferred to the paper to the paper using, for example, heat and pressure.

冷却装置１５０は、定着装置１３０により加熱された用紙を冷却する。 The cooling device 150 cools the paper heated by the fixing device 130.

給紙装置４００は、用紙収納部４１０に用紙を積層された状態で収納された用紙を画像形成部１００へと供給する。 The paper feeding device 400 supplies the paper stored in the paper storage unit 410 in a laminated state to the image forming unit 100.

読取装置３００は、画像形成部１００により画像（トナー像）が形成され、搬送装置２００で搬送中の用紙に形成された画像を読み取る装置である。読取装置３００の詳細は後述する。 The reading device 300 is a device in which an image (toner image) is formed by the image forming unit 100 and the image formed on the paper being conveyed by the conveying device 200 is read. Details of the reading device 300 will be described later.

搬送装置２００は、搬送路２０２に沿って用紙を搬送する装置であり、給紙装置４００から画像形成部１００へと用紙を搬送し、画像形成部１００で画像が形成された用紙を冷却装置１５０へとさらに搬送し、冷却装置１５０で冷却された用紙を読取装置３００に向けてさらに搬送する。搬送装置２００の詳細は後述する。 The transport device 200 is a device that transports the paper along the transport path 202, transports the paper from the paper feed device 400 to the image forming unit 100, and cools the paper on which the image is formed by the image forming unit 100. The paper cooled by the cooling device 150 is further conveyed toward the reading device 300. Details of the transport device 200 will be described later.

図２には、読取装置３００が示されている。読取装置３００は、例えば、ＬＥＤ等の発光部３１０、３１０と、発光部３１０、３１０で発光された光を受ける基準ロール３１２と、用紙が反射した光を反射する複数の反射部材３１４と、反射部材３１４で反射された光を集光する集光レンズ３１６と、集光レンズ３１６で集光された光を読み取る画像読取センサ３１８とを有する。画像読取センサ３１８としては、例えば、ＣＣＤを用いることができる。読取装置３００は、画像形成部１００で形成された画像に誤りがあるか否かを判定するために用いられる。 FIG. 2 shows the reading device 300. The reading device 300 includes, for example, light emitting units 310 and 310 such as LEDs, a reference roll 312 that receives the light emitted by the light emitting units 310 and 310, a plurality of reflecting members 314 that reflect the light reflected by the paper, and reflection. It has a condenser lens 316 that collects the light reflected by the member 314, and an image reading sensor 318 that reads the light focused by the condenser lens 316. As the image reading sensor 318, for example, a CCD can be used. The reading device 300 is used to determine whether or not the image formed by the image forming unit 100 has an error.

図３には、搬送装置２００の一部が示されている。搬送装置２００は、第一搬送ロール２１０と第二搬送ロール２２０とを有する。第一搬送ロール２１０と第二搬送ロール２２０とは、図示を省略する駆動源から駆動が伝達することでそれぞれに回転して、それぞれに用紙を搬送する。 FIG. 3 shows a part of the transport device 200. The transfer device 200 has a first transfer roll 210 and a second transfer roll 220. The first transfer roll 210 and the second transfer roll 220 rotate by transmitting the drive from a drive source (not shown), and transfer the paper to each of them.

搬送装置２００は、第一従動ロール２１２をさらに有する。第一従動ロール２１２は、第一搬送ロール２１０に接触していて、第一搬送ロール２１０に向けて付勢されていて、第一搬送ロール２１０に従動する。この際、第一従動ロール２１２の周速は、用紙の第一従動ロール２１２と第一搬送ロール２１０との間に挟まれた位置における用紙の速度と同じになる。 The transport device 200 further includes a first driven roll 212. The first driven roll 212 is in contact with the first transport roll 210, is urged toward the first transport roll 210, and is driven by the first transport roll 210. At this time, the peripheral speed of the first driven roll 212 is the same as the speed of the paper at the position sandwiched between the first driven roll 212 and the first conveying roll 210 of the paper.

搬送装置２００は、第二従動ロール２２２をさらに有する第二従動ロール２２２は、第二搬送ロール２２０に接触していて、第二搬送ロール２２０に向けて付勢されていて、第二搬送ロール２２０に従動する。この際、第二従動ロール２２２の周速は、用紙の第一従動ロール２１２と第一搬送ロール２１０との間に挟まれた位置における用紙の速度と同じになる。 In the transport device 200, the second driven roll 222 further having the second driven roll 222 is in contact with the second transport roll 220 and is urged toward the second transport roll 220, so that the second driven roll 220 is urged. Follow. At this time, the peripheral speed of the second driven roll 222 is the same as the speed of the paper at the position sandwiched between the first driven roll 212 and the first conveying roll 210 of the paper.

第一従動ロール２１２に、例えばエンコーダ等の用紙の搬送速度を測定する速度測定装置（不図示）を装着し、この速度測定装置の出力に基づいて、用紙の搬送が所望の値となるように第一搬送ロール２１０の回転速度を制御してもよい。また、第二従動ロール２２２に、例えばエンコーダ等の用紙の搬送速度を測定する速度測定装置（不図示）を装着し、この速度測定装置の出力に基づいて、用紙の搬送速度が所望の値となるように第二搬送ロール２２０の回転速度を制御してもよい。 A speed measuring device (not shown) for measuring the paper feeding speed such as an encoder is attached to the first driven roll 212 so that the paper feeding becomes a desired value based on the output of the speed measuring device. The rotation speed of the first transport roll 210 may be controlled. Further, a speed measuring device (not shown) for measuring the paper transport speed such as an encoder is attached to the second driven roll 222, and the paper transport speed is set to a desired value based on the output of the speed measuring device. The rotation speed of the second transport roll 220 may be controlled so as to be.

搬送装置２００は、搬送路形成部材２３２、２３２をさらに有する。搬送路形成部材２３２、２３２は、搬送路２０２の第一搬送ロール２１０及び第一従動ロール２１２の位置から読取装置３００が画像を読み取る領域である読取領域Ａへと至る部分を形成する。 The transport device 200 further includes transport path forming members 232 and 232. The transport path forming members 232 and 232 form a portion extending from the positions of the first transport roll 210 and the first driven roll 212 of the transport path 202 to the reading region A, which is the region where the reading device 300 reads an image.

搬送装置２００は、搬送路形成部材２３４、２３４をさらに有する。搬送路形成部材２３４、２３４は、搬送路２０２の読取領域Ａから第二搬送ロール２２０及び第二従動ロール２２２に位置へと至る部分を形成する。 The transport device 200 further includes transport path forming members 234 and 234. The transport path forming members 234 and 234 form a portion extending from the reading area A of the transport path 202 to the positions of the second transport roll 220 and the second driven roll 222.

搬送装置２００は、第一支持部２４２と第二支持部２４４とをさらに有する。第一支持部２４２と第二支持部２４４とは、それぞれが用紙を重力方向における下側から支持し、それぞれが用紙の搬送方向と交わる方向に用紙に対して線接触している。このように第一支持部２４２と第二支持部２４４とが用紙に対して線接触しているため、用紙に対して面接触する支持部を用いて用紙を支持する技術と比較して、用紙との摩擦を低減することができ、用紙の搬送速度の変動を抑制することができる。 The transport device 200 further includes a first support portion 242 and a second support portion 244. The first support portion 242 and the second support portion 244 each support the paper from the lower side in the direction of gravity, and each is in line contact with the paper in the direction intersecting the paper transport direction. Since the first support portion 242 and the second support portion 244 are in line contact with the paper in this way, the paper is compared with the technique of supporting the paper by using the support portion that is in surface contact with the paper. Friction with the paper can be reduced, and fluctuations in the paper transport speed can be suppressed.

第一支持部２４２は、読取領域Ａよりも用紙の搬送方向における上流側で用紙に対して線接触していて、第二支持部２４４は、読取領域Ａよりも用紙の搬送方向における下流側で用紙に対して線接触している。このため、読取領域Ａの用紙に対して読取装置３００と逆側の位置に支持部が存在しない状態となるため、読取領域Ａの重力方向における下側に位置する支持部で用紙を支持する技術と比較して、支持部による読取のための光の反射を抑制することができる。 The first support portion 242 is in line contact with the paper on the upstream side in the paper transport direction from the reading area A, and the second support portion 244 is on the downstream side in the paper transport direction from the reading area A. There is line contact with the paper. Therefore, since the support portion does not exist at the position opposite to the reading device 300 with respect to the paper in the reading region A, the technique of supporting the paper by the support portion located on the lower side in the gravity direction of the reading region A. In comparison with the above, the reflection of light for reading by the support portion can be suppressed.

図４には、用紙の読取領域Ａの周辺が重力方向における上方から示されている。先述のように、第一支持部２４２と第二支持部２４４とは用紙に対して重力方向における下側から線接触している。また、先述のように、第一支持部２４２は、読取領域Ａよりも用紙の搬送方向における上流側で用紙に対して線接触していて、第二支持部２４４は、読取領域Ａよりも用紙の搬送方向における下流側で用紙に対して線接触している。 In FIG. 4, the periphery of the paper reading area A is shown from above in the direction of gravity. As described above, the first support portion 242 and the second support portion 244 are in line contact with the paper from the lower side in the direction of gravity. Further, as described above, the first support portion 242 is in line contact with the paper on the upstream side in the paper transport direction from the reading area A, and the second support portion 244 is in line contact with the paper from the reading area A. There is line contact with the paper on the downstream side in the transport direction of.

１０・・・画像形成装置
１００・・・画像形成部
２００・・・搬送装置
２０２・・・搬送路
２１０・・・第一搬送ロール
２１２・・・第一従動ロール
２２０・・・第二搬送ロール
２２２・・・第二従動ロール
２４２・・・第一支持部
２４４・・・第二支持部
３００・・・読取装置
Ａ・・・読取領域 10 ... Image forming device 100 ... Image forming unit 200 ... Transfer device 202 ... Transfer path 210 ... First transfer roll 212 ... First driven roll 220 ... Second transfer roll 222 ... Second driven roll 242 ... First support part 244 ... Second support part 300 ... Reading device A ... Reading area

Claims (2)

記録媒体に画像を形成する画像形成部と、
前記画像形成部で画像が形成された記録媒体を搬送する搬送装置と、
前記搬送装置で搬送中の記録媒体に形成された画像を読み取る読取装置と、
を有し、
前記搬送装置は、
前記読取装置に対して記録媒体の搬送方向における上流側に配置された第一ロールと当該第一ロールに対向する第一従動ロール、前記読取装置に対して記録媒体の搬送方向における下流側に配置された第二ロールと当該第二ロールに対向する第二従動ロール、及び
前記第一ロールと前記第二ロールの、記録媒体の搬送方向における中間部分に配置される二つの支持部と、を有し、
当該二つの支持部は、記録媒体を重力方向における下側から支持して記録媒体の上側を開放空間とし、記録媒体の搬送方向と交わる方向に記録媒体に対して線接触するとともに、それぞれの延在方向から見た場合の形状が円形であり、
前記支持部の一つは、前記読取装置が画像を読み取る読取領域よりも記録媒体の搬送方向における上流側で記録媒体に線接触し、
前記支持部の他の一つは、前記読取装置が画像を読み取る読取領域よりも記録媒体の搬送方向における下流側で記録媒体に線接触する画像形成装置。 An image forming unit that forms an image on a recording medium,
A transport device for transporting a recording medium on which an image is formed in the image forming unit, and
A reading device that reads an image formed on a recording medium being transported by the transport device, and
Have,
The transport device is
The first roll arranged on the upstream side in the transport direction of the recording medium with respect to the reading device, the first driven roll facing the first roll, and arranged on the downstream side in the transport direction of the recording medium with respect to the reading device. The second roll and the second driven roll facing the second roll, and
It has two support portions arranged in an intermediate portion between the first roll and the second roll in the transport direction of the recording medium.
The two support portions support the recording medium from the lower side in the direction of gravity, and the upper side of the recording medium is an open space. shape when viewed from the extension direction is circular,
One of the support portions makes line contact with the recording medium on the upstream side in the transport direction of the recording medium with respect to the reading region in which the reading device reads an image.
The other one of the support portions is an image forming apparatus that makes line contact with the recording medium on the downstream side in the transport direction of the recording medium with respect to the reading region in which the reading device reads an image. 画像が形成された記録媒体を搬送する搬送装置と、
前記搬送装置で搬送中の記録媒体に形成された画像を読み取る読取装置と、
を有し、
前記搬送装置は、前記読取装置に対して記録媒体の搬送方向における上流側に配置された第一ロールと当該第一ロールに対向する第一従動ロール、前記読取装置に対して記録媒体の搬送方向における下流側に配置された第二ロールと当該第二ロールに対向する第二従動ロールを有し、
前記読取装置は、前記第一ロールと前記第二ロールの、記録媒体の搬送方向における中間部分に配置される二つの支持部であって、記録媒体を重力方向における下側から支持して記録媒体の上側を開放空間とし、記録媒体の搬送方向と交わる方向に記録媒体に対して線接触するとともに、それぞれの延在方向から見た場合の形状が円形である、二つの支持部を有し、
前記支持部の一つは、前記読取装置が画像を読み取る読取領域よりも記録媒体の搬送方向における上流側で記録媒体に線接触し、
前記支持部の他の一つは、前記読取装置が画像を読み取る読取領域よりも記録媒体の搬送方向における下流側で記録媒体に線接触する読取装置。 A transport device that transports the recording medium on which the image is formed, and
A reading device that reads an image formed on a recording medium being transported by the transport device, and
Have,
The transport device includes a first roll arranged upstream of the reading device in the transport direction of the recording medium, a first driven roll facing the first roll, and a transport direction of the recording medium with respect to the reading device. Has a second roll arranged on the downstream side in the above and a second driven roll facing the second roll.
The reading device is two support portions arranged in an intermediate portion between the first roll and the second roll in the transport direction of the recording medium, and supports the recording medium from below in the gravity direction and supports the recording medium. It has two support parts, the upper side of which is an open space , line contact with the recording medium in the direction intersecting the transport direction of the recording medium, and the shape when viewed from each extending direction is circular.
One of the support portions makes line contact with the recording medium on the upstream side in the transport direction of the recording medium with respect to the reading region in which the reading device reads an image.
The other one of the support portions is a reading device that makes line contact with the recording medium on the downstream side in the transport direction of the recording medium with respect to the reading region in which the reading device reads an image.
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