JP2011211654A - Image reader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image reader which can preferably comply with a change of a thickness of a document to be read.SOLUTION: The image reader optically reads an image recorded on a document 300A to be forwarded and has a read sensor 140, a first pinch roller 134, a first connection part 222, and a second urging part 250. The read sensor 140 is an adhesion type read sensor in which light is emitted onto the forwarding document 300A to read reflected light from the document 300A. The first pinch roller 134 is provided so as to come into contact with a one side face of a document face of the document 300A to be read by the read sensor 140 on the upstream side of a forwarding direction of the document 300A from the read sensor 140 to forward the document 300A while rotating. The first connection part 222 connects the read sensor 140 with the first pinch roller 134. The second urging part 250 moves the read sensor 140 and the first pinch roller 134 which are connected by the first connection part 222 to a first crossing direction.

Description

  The present invention relates to an image reading apparatus that conveys an original and optically reads an image recorded on the original.

  A proposal regarding a double-sided image reading apparatus has been made (for example, see Patent Document 1). Specifically, the double-sided image reading device of Patent Document 1 includes a document thickness detection unit, a pair of image sensors, and a stacked piezoelectric actuator. In the double-sided image reading apparatus of Patent Document 1, the stacked piezoelectric actuator controls the movement of the image sensor that can approach and separate from the document based on the thickness of the document detected by the document thickness detection unit. Then, the interval between the image sensors with respect to the original is adjusted to a predetermined interval.

JP 2002-262029 A

  When a contact-type reading sensor such as a CIS (Contact Image Sensor) is used as a reading sensor for optically reading an image recorded on a document, the reading sensor is brought close to the surface of the document to be read. Must do so. However, there are various originals to be read in the image reading apparatus, and the thickness of the original is not constant. For example, when a contact-type reading sensor is installed in an image reading apparatus so that a document with a certain thickness is in focus, when reading a document with a different thickness, the document cannot be focused and a suitable reading cannot be performed. .

  In this regard, according to the configuration disclosed in Patent Document 1, the movement of the image sensor can be controlled based on the detected thickness of the document. However, in the configuration as disclosed in Patent Document 1, an original thickness detecting unit is required to detect the original thickness. In addition, a multilayer piezoelectric actuator that performs movement control of the image sensor based on the thickness of the document detected by the document thickness detection unit is required. Therefore, in the configuration as in Patent Document 1, the apparatus is complicated.

  An object of the present invention is to provide an image reading apparatus that can suitably cope with a change in the thickness of a document to be read.

  One aspect of the present invention made in view of the above-described conventional problems is an image reading apparatus that conveys a document and optically reads an image recorded on the document, and the conveyed document is irradiated with light. A contact-type reading sensor that reads reflected light from the original, and one of the original surfaces of the original that is read by the reading sensor on the upstream side of the reading sensor in the conveying direction of the original. A first roller that conveys the document while rotating, a connecting portion that connects the reading sensor and the first roller, and the reading sensor and the first roller that are connected by the connecting portion. And a moving unit that moves in a first intersecting direction intersecting the transport direction on a surface intersecting the document surface of the document being transported. According to this, the reading sensor is moved in the first intersecting direction in accordance with the thickness of the document in conjunction with the first roller that is in contact with the surface on one side of the document on the upstream side in the document conveyance direction from the reading sensor. be able to. The distance between the reading sensor and one side of the document read by the reading sensor can be made constant regardless of the thickness of the document. At that time, it is not necessary to execute special control.

  This image reading apparatus can also be configured as follows. That is, when the original conveyed by the first roller is brought into contact with the first roller, the first roller is set as the first intersecting direction of the original conveyed. The moving unit may move the reading sensor in the separation direction as it moves in a separation direction away from the document surface. According to this, when the original is conveyed to the first roller, the reading sensor connected to the first roller by the connecting portion can be moved in the separation direction.

  The moving unit includes a biasing unit that biases at least one of the first roller and the connecting unit in a lower surface side direction with respect to the document transport direction in the first intersecting direction. The reading sensor is arranged at a predetermined position in the first intersecting direction by urging by the urging unit, and the original and the first conveyed by conveying the original to the first roller. The moving unit may move in the separation direction against the urging by the urging unit by contacting the roller. According to this, the reading sensor can be disposed at a predetermined position and the reading sensor can be suitably moved via the biasing portion.

  Moreover, it is good also as having the guide mechanism which guides the movement to the said 1st crossing direction by the said moving part. According to this, the reading sensor and the first roller can be suitably moved in the first intersecting direction.

  The guide unit may be arranged on at least one end side of the reading sensor in a second intersecting direction intersecting the transport direction on the document surface of the document to be transported. According to this, the movement of the reading sensor and the first roller can be suitably guided on at least one end side of the reading sensor.

  In addition, the reading sensor and the first roller are provided on an upper surface side that is an upper side in a conveying state of the original surface of the original document being conveyed, and the connecting portion is on an upper surface side of the original document being conveyed. The reading sensor and the first roller may be connected. According to this, the reading sensor together with the first roller can be suitably moved in the first intersecting direction on the upper surface side of the conveyed document according to the thickness of the document.

  The connecting portion has a first through hole through which a first rotating shaft to which the first roller is attached passes, the connecting portion is attached to the reading sensor, and the first rotating shaft is the first rotating shaft. The reading sensor and the first roller may be connected by the connecting portion by being inserted into the through hole. According to this, the connecting part is attached to the reading sensor, and the reading sensor and the first roller can be connected by inserting the first rotating shaft into the first through hole. Therefore, the connection between the reading sensor and the first roller can be simplified.

  A second roller provided downstream from the reading sensor in the document conveying direction so as to be in contact with the one side surface of the document read by the reading sensor and configured to convey the document while rotating; And the connecting portion connects the reading sensor, the first roller, and the second roller, and the moving portion includes the reading sensor, the first roller, and the second roller connected by the connecting portion. The roller may be moved in the first intersecting direction. According to this, the reading sensor is moved in the first intersecting direction in accordance with the thickness of the document in conjunction with the second roller that is in contact with the surface on the one side of the document downstream from the reading sensor in the document conveyance direction. be able to.

  Further, the connecting portion has a first through hole through which the first rotating shaft to which the first roller is attached and a second through hole through which the second rotating shaft to which the second roller is attached passes. The connecting portion is attached to the reading sensor, the first rotating shaft is inserted into the first through hole, and the second rotating shaft is inserted into the second through hole. The first roller and the second roller may be connected by the connecting portion. According to this, the connecting portion is attached to the reading sensor, the first rotating shaft is inserted into the first through hole, and the second rotating shaft is inserted into the second through hole, whereby the reading sensor, the first roller, The second roller can be connected. Therefore, the connection between the reading sensor, the first roller, and the second roller can be simplified.

  The connecting portion includes an end-side connecting portion disposed on one end side of the reading sensor in a second intersecting direction intersecting the transport direction on the document surface of the document to be transported, and the second cross-direction in the second intersecting direction. And a first end through hole through which the first rotating shaft to which the first roller is attached passes through the second end connecting portion disposed on the other end side of the reading sensor. The other end side connecting portion has a first other end side first through hole through which the first rotation shaft passes, and the one end side first through hole and the other end side first through hole are the first end It may be arranged so as to coincide with the center of the reading sensor in the crossing direction. According to this, the one end side first through hole and the other end side first through hole provided so as to coincide with the center of the reading sensor in the first intersecting direction at two locations of the reading sensor in the second intersecting direction. The reading sensor and the first roller can be coupled to each other. Therefore, the connection between the reading sensor and the first roller can be simplified.

  The moving unit may be formed of an elastic member that is elastically deformable in the first intersecting direction. According to this, it is possible to smoothly move the reading sensor and the first roller in the first intersecting direction according to the thickness of the document.

  According to the present invention, it is possible to obtain an image reading apparatus that can suitably cope with a change in the thickness of a document to be read.

(A) is a figure which shows the external appearance of a scanner apparatus, (b) is AA sectional drawing shown to Fig.1 (a), and is a figure which shows the outline of an internal structure of a scanner apparatus. It is a figure which shows the connection structure of the reading sensor by a connection part, a 1st pinch roller, and a 2nd pinch roller. FIG. 3 is a diagram showing a configuration for moving the connecting structure shown in FIG. 2 in the thickness direction of the document, and is a diagram showing a state in which the document is conveyed to the paper feed roller and the first pinch roller side. FIG. 6 is a diagram illustrating a state in which a document is conveyed to the image reading sensor side by a paper feed roller and a first pinch roller. FIG. 6 is a diagram illustrating a state in which a document is transported and passed through a reading sensor. FIG. 6 is a diagram illustrating a state in which a document passes through a reading sensor and is conveyed by a paper discharge roller and a second pinch roller. FIG. 6 is a diagram illustrating a state in which a document has passed through a paper discharge roller and a second pinch roller. It is a figure which shows the connection structure body of the reading sensor by the other connection part, a 1st pinch roller, and a 2nd pinch roller. Furthermore, it is a figure which shows the structure containing the connection structure and 3rd biasing part by another connection part.

  Embodiments for carrying out the present invention will be described below in detail with reference to the drawings. The present invention is not limited to the configurations described below, and various configurations can be employed in the same technical idea. For example, some of the configurations described below may be omitted or replaced with other configurations. Moreover, you may make it include another structure.

  An image reading apparatus according to the present invention is an apparatus having an image reading function for conveying an original and optically reading an image recorded on the conveyed original. For example, a copier, a facsimile machine, or a scanner device is applicable. Hereinafter, the scanner device 10 will be described as an example of the image reading device.

  The scanner device 10 has an appearance as shown in FIG. As shown in FIG. 1A, the scanner device 10 has a paper feed tray 12 and a paper discharge tray 14, and as shown in FIG. 1B, the original 300 is separated and conveyed therein. And a predetermined configuration for reading an image recorded on the original surface of the conveyed original 300. A document 300 to be read (scanned) is set on the paper feed tray 12. For example, a plurality of originals 300 are set on the paper feed tray 12 in an overlapping state. The document 300 to be read by the scanner device 10 is exemplified by a predetermined resin plate such as cardboard or cardboard in addition to plain paper. The paper discharge tray 14 receives the original 300 that is fed from the paper feed tray 12, transported through the scanner device 10, and discharged.

  As shown in FIG. 1B, the scanner device 10 includes a document separation mechanism 100, a paper feed roller 130, a rotation shaft 132, a first pinch roller (first driven roller) 134, and a rotation. A shaft 136, a reading sensor 140, a paper discharge roller 150, a rotation shaft 152, a second pinch roller (second driven roller) 154, and a rotation shaft 156 are included.

  The document separation mechanism 100 separates one document 300A from the document 300 set in a state where a plurality of sheets are overlapped on the paper feed tray 12. Then, the separated single document 300A is conveyed to the paper feed roller 130 side. The document separation mechanism 100 includes a separation roller 102, a rotation shaft 104, a separation piece 106, and a first urging unit 108.

  The separation roller 102 is installed so that a part of the outer peripheral surface of the separation roller 102 protrudes from the surface of the paper feed tray 12 on the side where the document 300 is set. The separation roller 102 is supported on the rotation shaft 104. The rotation shaft 104 is connected to a rotation drive mechanism such as a motor (not shown). When the rotation drive mechanism is driven and the rotation shaft 104 is rotated accordingly, the separation roller 102 is also rotated in the direction of the arrow described in the separation roller 102 in FIG. When the separation roller 102 is rotated by the rotation shaft 104, the separation roller 102 is moved from the original 300 set in a state of being overlapped on the paper feed tray 12 to one side of the original surface of the original 300 </ b> A. It contacts the lower surface side opposite to the upper surface side and separates it. The separation roller 102 conveys the separated document 300A in a direction (conveyance direction) determined by the rotation direction. That is, the separation roller 102 conveys the document 300A to the paper feed roller 130 side. The outer peripheral surface of the separation roller 102 is formed of rubber such as silicon rubber.

  The separation piece 106 separates the other original 300 attached to the original 300A conveyed by the separation roller 102 from the original 300A. The separation piece 106 is formed of an elastic member such as rubber. The distal end portion, which is one end portion of the separation piece 106, is disposed close to (including in contact with) the outer peripheral surface of the separation roller 102. Specifically, the tip of the separation piece 106 is arranged in a state of being pressed against the outer peripheral surface of the separation roller 102. The first urging unit 108 urges the separation piece 106 in a direction crossing the outer peripheral surface of the separation roller 102. The first urging portion 108 is formed by an elastic member such as a coil spring. The original 300 </ b> A is separated by the separation roller 102 and the separation piece 106 urged toward the outer peripheral surface of the separation roller 102 by the first urging unit 108. The separated single document 300A passes between the separation roller 102 and the separation piece 106. Then, the document 300A is conveyed to the paper feed roller 130 side according to the rotation of the separation roller 102 as described above.

  The paper feed roller 130 conveys the original 300 </ b> A separated and conveyed by the separation roller 102 to the reading sensor 140 side. The paper feed roller 130 is installed on the lower surface side of the document 300A in a transported state. That is, the feed roller 130 is disposed on the same side as the separation roller 102 on the original surface of the original 300A in the transported state. The paper feed roller 130 is supported on the rotation shaft 132. The first pinch roller 134 is disposed on the upper surface side different from the surface on which the sheet feeding roller 130 is disposed on the document surface of the document 300A to be conveyed. That is, the first pinch roller 134 is installed to face the paper feed roller 130. The first pinch roller 134 is supported by the rotary shaft 136 and rotates following the paper feed roller 130. The paper feed roller 130 and the first pinch roller 134 sandwich the single document 300A separated and conveyed by the separation roller 102 and convey it to the reading sensor 140 side.

  In this conveyance, the rotation shaft 132 that supports the paper feed roller 130 is rotated by a rotation driving mechanism such as a motor (not shown) while the original 300A is held, and the paper feed roller 130 is rotated accordingly. Realized. At this time, the first pinch roller 134 rotates following the paper feed roller 130. Note that the arrows in the paper feed roller 130 and the first pinch roller 134 in FIG. 1B indicate the rotation directions of the paper feed roller 130 and the first pinch roller 134. Further, as shown in FIG. 3 to be described later, the first pinch roller 134 is orthogonal to the conveyance direction on the original surface of the original 300A in the direction intersecting the original 300A conveyance direction on the original surface of the original 300A. Two of them are installed side by side at a predetermined interval in the direction of the movement. Hereinafter, in the present embodiment, the direction that intersects the conveyance direction of the document 300A on the document surface of the document 300A is also referred to as a second intersecting direction. The two paper feed rollers 130 are also installed in the above-described arrangement with respect to the two first pinch rollers 134. The two paper feed rollers 130 are supported on one rotating shaft 132. The two first pinch rollers 134 are supported by one rotating shaft 136.

  The reading sensor 140 optically reads an image recorded on the conveyed document 300A. The reading sensor 140 includes, for example, a CIS (Contact Image Sensor). The reading sensor 140 is provided on the upper surface side of the original surface of the conveyed original 300A, and reads the upper surface, for example, the front surface. The scanner device 10 has a light source such as a lamp not shown in FIG. The reading sensor 140 reads the reflected light that is irradiated from the light source and reflected from the upper surface of the document 300A.

  The paper discharge roller 150 conveys the single document 300A conveyed through the reading sensor 140 to the downstream side in the conveyance direction. In other words, the paper discharge roller 150 conveys the conveyed document 300A to the paper discharge tray 14 installed on the downstream side in the conveyance direction. As with the separation roller 102 and the paper feed roller 130, the paper discharge roller 150 is installed on the lower surface side of the conveyed document 300A. The paper discharge roller 150 is supported by the rotation shaft 152. The second pinch roller 154 is disposed on the upper surface side different from the surface on which the paper discharge roller 150 is disposed on the original surface of the original 300 </ b> A being conveyed. That is, the second pinch roller 154 is installed to face the paper discharge roller 150. The second pinch roller 154 is supported by the rotation shaft 156 and rotates following the paper discharge roller 150. The paper discharge roller 150 and the second pinch roller 154 sandwich the single document 300A that has been conveyed through the reading sensor 140 and convey it to the paper discharge tray 14 side.

  In this conveyance, the rotation shaft 152 that supports the paper discharge roller 150 is rotated by a rotation driving mechanism such as a motor (not shown) while the original 300A is held, and the paper discharge roller 150 is rotated accordingly. Realized. At this time, the second pinch roller 154 rotates following the paper discharge roller 150. Note that the arrows in the paper discharge roller 150 and the second pinch roller 154 in FIG. 1B indicate the rotation directions of the paper discharge roller 150 and the second pinch roller 154. As shown in FIG. 3 described later, two second pinch rollers 154 are arranged at a predetermined interval in the second intersecting direction, specifically, in the direction orthogonal to the transport direction on the original surface of the original 300A. It is installed at. Also, two paper discharge rollers 150 are installed in the above-described arrangement with respect to the two second pinch rollers 154. The two paper discharge rollers 150 are supported by one rotating shaft 152. Further, the two second pinch rollers 154 are supported by one rotating shaft 156.

  The original 300A is conveyed by the paper discharge roller 150 and the second pinch roller 154, and the original 300A is discharged to the paper discharge tray 14, whereby the reading operation of one original 300A is completed. When a plurality of documents 300 are set on the sheet feed tray 12, documents 300 different from the document 300 </ b> A already transported by the document separation mechanism 100 are sequentially transported. An image recorded on the document 300 conveyed sequentially is read. Then, the paper is sequentially discharged to the paper discharge tray 14. The discharged document 300 is stacked on the paper discharge tray 14. The scanner device 10 shown in FIG. 1A is in a state in which the paper discharge tray 14 is stored. When the above-described reading operation is executed in the scanner device 10, the paper discharge tray 14 is pulled out in the “drawing direction” shown in FIG. 1A and used in an extended state.

  Incidentally, the first pinch roller 134, the reading sensor 140, and the second pinch roller 154 shown in FIG. 1B are connected by a connecting portion constituted by the first connecting portion 222 and the second connecting portion 228. The first pinch roller 134, the reading sensor 140, and the second pinch roller 154 cross the document 300A conveyance direction on the surface that intersects the document surface of the document 300A according to the thickness of the document 300A being conveyed. Specifically, it moves in the thickness direction of the document 300A. Hereinafter, this configuration will be described with reference to FIG. Hereinafter, in the present embodiment, the configuration illustrated in FIG. 2 is also referred to as a “connection structure 200”. In addition, the direction that intersects the conveyance direction of the document 300A on the surface that intersects the document surface of the document 300A is also referred to as a “first intersecting direction”.

  The first connecting part 222 connects the reading sensor 140 and the two first pinch rollers 134. The first connection part 222 is configured by one end side first connection part 224 and the other end side first connection part 226. In the following description, in particular, when the one end-side first connecting portion 224 and the other end-side first connecting portion 226 are not identified, they are collectively referred to as the first connecting portion 222. The one end side first connecting portion 224 is disposed on one end side with respect to the center line L <b> 1 among both ends of the reading sensor 140 in the second intersecting direction. The center line L1 is a straight line in the transport direction passing through the center of the reading sensor 140 in the second intersecting direction. The other end side first connecting portion 226 is disposed on the other end side with respect to the center line L <b> 1 among both ends of the reading sensor 140 in the second intersecting direction. The one end side first connecting portion 224 and the other end side first connecting portion 226 are opposite to the conveying direction from the surface of the reading sensor 140 facing the outer peripheral surface of the first pinch roller 134 in the direction opposite to the conveying direction. It is attached so as to protrude in the direction of. The first connecting part 222 can be attached to the reading sensor 140 by various methods. For example, the predetermined engaging portion may be formed on the first connecting portion 222 and the reading sensor 140 and attached by engaging them. Moreover, it is good also as a structure which adhere | attaches. Further, the first connecting portion 222 may be integrally formed with the reading sensor 140. The two first pinch rollers 134 are installed between the first end-side first connecting portion 224 and the other end-side first connecting portion 226.

  One end-side first through hole 225 is formed in the end of the one-end-side first connecting portion 224 on the first pinch roller 134 side so as to penetrate the one-end-side first connecting portion 224 in the second intersecting direction. In addition, the other end side first through hole is formed in the end of the other end side first connecting portion 226 on the first pinch roller 134 side so as to penetrate the other end side first connecting portion 226 in the second crossing direction. Has been. In addition, in the state shown in FIG. 2, since the other end side 1st through-hole is arrange | positioned in the position which overlapped with the 1st pinch roller 134, the illustration is abbreviate | omitted. The one end side first through hole 225 is disposed so as to coincide with the center of the reading sensor 140 in the first intersecting direction. That is, the center of the first through hole 225 at the one end side is arranged at a position (H / 2) that is half the height H of the reading sensor 140 that coincides with the first intersecting direction. . The other end side first through hole is also arranged so as to have the same positional relationship as the one end side first through hole 225 with respect to the reading sensor 140. The rotating shaft 136 supported by the one end side first through hole 225 and the other end side first through hole is disposed in parallel to the second intersecting direction.

  The second connecting part 228 connects the reading sensor 140 and the two second pinch rollers 154. The second connecting part 228 is configured by one end side second connecting part 230 and the other end side second connecting part 232. In the following description, in particular, when the one end side second connecting portion 230 and the other end side second connecting portion 232 are not identified, they are collectively referred to as a second connecting portion 228. The one end side second connecting portion 230 is disposed on one end side with respect to the center line L <b> 1 among both ends of the reading sensor 140 in the second intersecting direction. The other end side second connecting portion 232 is disposed on the other end side with respect to the center line L <b> 1 among both ends of the reading sensor 140 in the second intersecting direction. The one end side second connecting portion 230 and the other end side second connecting portion 232 are attached so as to protrude in the transport direction from the surface of the reading sensor 140 facing the outer peripheral surface of the second pinch roller 154 in the transport direction. ing. The second connecting part 228 can be attached to the reading sensor 140 by the same method as that for the first connecting part 222. The two second pinch rollers 154 are installed between the one end side second connecting portion 230 and the other end side second connecting portion 232.

  One end-side second through hole 231 is formed at the end of the one-end-side second connecting portion 230 on the second pinch roller 154 side so as to penetrate the one-end-side second connecting portion 230 in the second intersecting direction. Also, the other end side second through hole is formed at the end of the other end side second connecting portion 232 on the second pinch roller 154 side so as to penetrate the other end side second connecting portion 232 in the second intersecting direction. Has been. In addition, in the state shown in FIG. 2, since the other end side 2nd through-hole is arrange | positioned in the position which overlapped with the 2nd pinch roller 154, the illustration is abbreviate | omitted. The one end side second through hole 231 is arranged so as to coincide with the center of the reading sensor 140 in the first intersecting direction. That is, the center of the second through-hole 231 on one end side is arranged at a position (H / 2) that is half the height H of the reading sensor 140 that coincides with the first intersecting direction. . The other end side second through hole is also disposed so as to have the same positional relationship as the one end side second through hole 231 with respect to the reading sensor 140. The rotating shaft 156 supported by the one end side second through hole 231 and the other end side second through hole is installed in parallel to the second intersecting direction.

  A side wall 240 is attached to the reading sensor 140 as shown in FIG. The side wall portion 240 is attached to the side surface on the one end side where the one end side first connecting portion 224 and the one end side second connecting portion 230 are disposed, of both side surfaces in the second intersecting direction of the reading sensor 140. The side wall 240 can be attached to the reading sensor 140 by, for example, the same method as that for the first connecting portion 222. A plurality of, for example, two protrusions 242 as shown in FIG. 3 are formed on the side wall 240 on a center line L2 passing through the center of the reading sensor 140 in the transport direction. The function of the two protrusions 242 will be described later. The side wall 240 is formed with a convex portion 244 that protrudes in the first intersecting direction from the surface opposite to the reading surface of the reading sensor 140 for reading the image recorded on the upper surface of the document 300A.

  The connection structure 200 shown in FIG. 2 is installed in the scanner device 10 as shown in FIG. That is, as described with reference to FIG. 1B, the first pinch roller 134 and the paper feed roller 130 are opposed to each other, and the second pinch roller 154 and the paper discharge roller 150 are opposed to each other. . Further, the reading sensor 140 reads an image recorded on the upper surface of the original 300A, and the reading surface of the reading sensor 140 and the conveying surface 310 on which the original 300A is conveyed have a certain distance, for example, the focus of the reading sensor 140. It is installed so as to face each other with a distance corresponding to the distance. The scanner device 10 includes a second urging unit 250. The second urging portion 250 is formed by an elastic member such as a coil spring. The second urging unit 250 is installed between the two first pinch rollers 134 in contact with the rotation shaft 136 and urges the connection structure 200 in the first intersecting direction toward the upper surface of the document 300A. . In other words, the second urging unit 250 urges the connection structure 200 in the direction of the lower side perpendicular to the conveyance direction of the document 300A. The second urging unit 250 is installed in contact with the rotating shaft 136 so that the compression direction coincides with the first intersecting direction.

  In addition, the scanner device 10 includes a cover body 260. The cover body 260 is used for installing the connection structure 200 inside the scanner device 10. The cover body 260 is attached to the reading sensor 140 so as to cover the surface excluding the reading surface of the reading sensor 140. With the cover body 260 attached to the reading sensor 140, the two are integrated. The connection structure 200 can move in the first crossing direction within the cover body 260 in a state where the reading sensor 140 is covered by the cover body 260. The cover body 260 is formed with a first guide portion 264, a second guide portion 274, and a third guide portion 284. Further, the cover body 260 is formed with a first opening and a second opening 290.

  The first guide part 264 constitutes a first guide mechanism together with the rotating shaft 136. The first guide part 264 is constituted by one end side first guide part 266 and the other end side first guide part 270. The first guide part 264 is disposed on the side surface of the cover body 260. The side surface of the cover body 260 on which the first guide portion 264 is disposed is a surface of the cover body 260 where the cover body 260 and the first pinch roller 134 face each other. Hereinafter, in the present embodiment, the surface of the cover body 260 where the cover body 260 and the first pinch roller 134 face each other is also referred to as a first side surface. The one end-side first guide portion 266 is disposed so as to protrude in the direction opposite to the transport direction. The one end-side first guide portion 266 is disposed at a position adjacent to the first pinch roller 134 with the one end-side first connecting portion 224 interposed therebetween in the second intersecting direction. In the present embodiment, as shown in FIG. 3, the one end-side first guide portion 266 and the other end-side first guide portion 270 are arranged along the second intersecting direction with the first pinch roller 134 interposed therebetween. . And the one end side 1st guide part 266 is formed so that it may protrude toward the same direction as the one end side 1st connection part 224 from the 1st side surface of the cover body 260 mentioned above. One end-side first guide groove 268 is formed at the end of the one-end-side first guide portion 266 in the protruding direction. The one end-side first guide groove 268 has an elongated shape in the first intersecting direction with a center line L3 parallel to the center line L2 passing through the two protrusions 242 as the center. The one end side first guide groove 268 is formed by a through hole whose width in the direction orthogonal to the first intersecting direction is slightly wider than the diameter of the rotation shaft 136 of the first pinch roller 134. The rotary shaft 136 that has passed through the first through hole 225 from the first pinch roller 134 side is inserted into the first guide groove 268 at the one end side.

  The other end side first guide part 270 is formed on the first side surface of the cover body 260 in the same manner as the one end side first guide part 266. The other end side first guide part 270 is arranged at a position adjacent to the first pinch roller 134 with the other end side first connecting part 226 in between in the second crossing direction. And the other end side 1st guide part 270 is formed so that it may protrude toward the same direction as the other end side 1st connection part 226 from the 1st side surface of the cover body 260. FIG. The other end side first guide groove 272 is formed at the end of the other end side first guide part 270 in the protruding direction. The other end side first guide groove 272 is configured by a through hole having the same shape as the one end side first guide groove 268. A rotating shaft 136 penetrating the other end side first through hole is inserted into the other end side first guide groove 272 from the first pinch roller 134 side.

  The second guide part 274 and the rotation shaft 156 constitute a second guide mechanism. The second guide part 274 is constituted by one end side second guide part 276 and the other end side second guide part 280. The second guide part 274 is disposed on the side surface of the cover body 260. The side surface of the cover body 260 on which the second guide portion 274 is disposed is a surface of the cover body 260 where the cover body 260 and the second pinch roller 154 face each other. Hereinafter, in the present embodiment, a surface of the cover body 260 where the cover body 260 and the second pinch roller 154 face each other is also referred to as a second side surface. The one end-side second guide portion 276 is disposed at a position adjacent to the second pinch roller 154 across the one end-side second connecting portion 230 in the second intersecting direction. In the present embodiment, as shown in FIG. 3, the one end-side second guide portion 276 and the other end-side second guide portion 280 are arranged along the second intersecting direction with the second pinch roller 154 interposed therebetween. . And the one end side 2nd guide part 276 is formed so that it may protrude toward the same direction as the one end side 2nd connection part 230 from the 2nd side surface of the cover body 260 mentioned above. One end side second guide groove 278 is formed at the end of the one end side second guide portion 276 in the protruding direction. The one end side second guide groove 278 has an elongated shape in the first intersecting direction with a center line L4 parallel to the center line L2 passing through the two protrusions 242 as the center. The one end-side second guide groove 278 is configured by a through-hole whose width in the direction orthogonal to the first intersecting direction is slightly wider than the diameter of the rotation shaft 156 of the second pinch roller 154. A rotating shaft 156 that passes through the one end side second through hole 231 is inserted into the one end side second guide groove 278 from the second pinch roller 154 side.

  The other end side second guide portion 280 is formed on the second side surface of the cover body 260 in the same manner as the one end side second guide portion 276. The other end side second guide part 280 is arranged at a position adjacent to the second pinch roller 154 across the other end side second connecting part 232 in the second intersecting direction. And the other end side 2nd guide part 280 is formed so that it may protrude toward the same direction as the other end side 2nd connection part 232 from the 2nd side surface of the cover body 260. FIG. The other end side second guide groove 282 is formed at the end of the other end side second guide portion 280 in the protruding direction. The other end side second guide groove 282 is configured by a through hole having the same shape as the one end side second guide groove 278. The rotation shaft 156 that has passed through the second through hole on the other end side is inserted into the second guide groove 282 on the other end side from the second pinch roller 154 side.

  The third guide part 284 is formed on one of the side surfaces of the cover body 260 in the second intersecting direction. In the present embodiment, the one end side first guide portion 266 and the one end side second guide portion 276 are formed on the same side surface where the center line L1 is used as a reference. The third guide portion 284 is attached to the side surface on one end side of the reading sensor 140 in the second intersecting direction. The third guide part 284 guides the movement of the connection structure 200 in the first intersecting direction together with the two protrusions 242 of the side wall part 240 and the like. In other words, the third guide portion 284 forms a third guide mechanism together with the two protrusions 242 of the side wall portion 240 attached to the side surface on one end side of the reading sensor 140. The third guide portion 284 includes a third guide groove 286 and a housing portion 288. The third guide groove 286 has an elongated shape along the first intersecting direction. Further, the third guide groove 286 is centered on the center line L2 passing through the two protrusions 242 of the side wall 240. The third guide groove 286 is configured by a through hole whose width in the transport direction is slightly wider than the diameter of the protrusion 242. A protrusion 242 is inserted into the third guide groove 286. The accommodating portion 288 accommodates the convex portion 244 of the side wall portion 240 attached to the reading sensor 140.

  The first opening is an opening formed in a region between the first guide portion 266 at one end and the first guide portion 270 at the other end on the first side surface of the cover body 260. The first connecting portion 222 protrudes from the first opening. In addition, in the state shown in FIG. 3, since the 1st side surface of the cover body 260 in which the 1st opening part was formed is provided in the position hidden from the perspective direction, the illustration is abbreviate | omitted. The first opening has substantially the same shape as the second opening 290 shown in FIG. The second opening 290 is an opening formed in a region between the one end side second guide part 276 and the other end side second guide part 280 on the second side surface. A second connecting portion 228 protrudes from the second opening 290.

  When the original 300A is further conveyed by the separation roller 102 from the state shown in FIG. 3, as shown in FIG. 4, the original 300A includes a paper feed roller 130 (not shown in FIG. 4), a first pinch roller 134, and the like. To reach. Then, the document 300A is sandwiched between the paper feed roller 130 and the first pinch roller 134. The document 300A is a document having a thickness t. Therefore, in the state shown in FIG. 4, a reaction force is generated as the document 300A passes. By the generated reaction force, the second urging portion 250 is compressed by an amount corresponding to the thickness t in the first intersecting direction. Accordingly, the first pinch roller 134 moves together with the rotating shaft 136 so as to be separated from the outer peripheral surface of the paper feed roller 130 by an amount corresponding to the thickness t in the first intersecting direction. That is, the first pinch roller 134 rises together with the rotation shaft 136 so as to be separated from the upper surface of the original 300A in the first intersecting direction. In the first intersecting direction, the direction in which the first pinch roller 134 and the like rise and are separated from the upper surface of the document 300A is also referred to as a separation direction. The separation direction coincides with the direction of the upper surface on the vertical side with respect to the conveyance direction of the document 300A.

  When the first pinch roller 134 and the rotating shaft 136 move in the separating direction, the reading sensor 140 connected to the first pinch roller 134 by the first connecting portion 222 also moves in the same direction. Further, the second pinch roller 154 connected to the reading sensor 140 by the second connecting portion 228 also moves in the same direction together with the rotation shaft 156. That is, when the document 300A reaches the paper feed roller 130 and the first pinch roller 134, the connection structure 200 is raised by an amount corresponding to the thickness t in the separation direction as compared with the state shown in FIG. At this time, the connection structure 200 is lifted by the one end side first guide groove 268 and the other end side first guide groove 272, the one end side second guide groove 278, the other end side second guide groove 282, and the third guide. Along the groove 286. That is, the connection structure 200 is raised while being guided by the first guide mechanism by the first guide portion 264 and the rotating shaft 136. Further, it is performed in a state of being guided by the second guide mechanism by the second guide portion 274 and the rotating shaft 156. Furthermore, it is performed in a state of being guided by a third guide mechanism including the third guide portion 284 and the protrusion 242.

  In other words, the document 300A is conveyed toward the first pinch roller 134 along the conveyance direction. The document 300A and the first pinch roller 134 come into contact with each other. An external force is applied to the first pinch roller 134 by the force with which the document 300A is conveyed. Due to the external force applied to the first pinch roller 134, the first pinch roller 134 is lifted vertically upward in the transport direction by an amount corresponding to the thickness t. At this time, the external force applied to the first pinch roller 134 causes the first pinch roller 134 to move vertically upward in the conveying direction of the document 300A along the one end side first guide groove 268 and the other end side first guide groove 272 ( It is raised in the direction of the upper surface perpendicular to the conveying direction. In addition, as the first pinch roller 134 is lifted vertically upward in the transport direction, the reading sensor 140 is also lifted vertically upward in the transport direction. The reading sensor 140 and the first pinch roller 134 are connected by the above-described configuration. Therefore, when the first pinch roller 134 is raised, the reading sensor 140 is raised vertically upward in the transport direction along the third guide groove 286 of the third guide portion 284 and the like. The second pinch roller 154 is also connected to the reading sensor 140. Therefore, the second pinch roller 154 is lifted vertically upward in the transport direction via the reading sensor 140 as the first pinch roller 134 is lifted. Similarly to the first pinch roller 134 and the reading sensor 140, the second pinch roller 154 is raised vertically upward in the transport direction along the one end side second guide groove 278 and the other end side second guide groove 282. The In the present embodiment, one end side first guide groove 268 and the other end side first guide groove 272 of the first pinch roller 134, the third guide portion 284 of the reading sensor 140, or one end side of the second pinch roller 154. A second guide groove 278 and a second guide groove 282 on the other end side are formed along the direction perpendicular to the transport direction. With these guide mechanisms, the first pinch roller 134 can be accurately raised vertically upward in the conveyance direction by the force with which the document 300A is conveyed and the thickness t, and as the first pinch roller 134 rises. The reading sensor 140 and the second pinch roller 154 can be accurately raised vertically upward in the transport direction.

  When the original 300A is conveyed by the paper feed roller 130 and the first pinch roller 134 from the state shown in FIG. 4, the original 300A reaches the reading sensor 140 as shown in FIG. The roller 150 and the second pinch roller 154 are reached. Since document 300A has a constant thickness t, even in the state shown in FIG. 5, connection structure 200 is arranged at the same position as in the state shown in FIG. Therefore, the reading sensor 140 reads an image recorded on the upper surface of the original 300A from a position separated by a predetermined distance from the upper surface of the original 300A to be read. Here, the predetermined distance is a distance corresponding to an interval formed between the reading sensor 140 and the conveyance surface 310 in the state shown in FIG.

  Further, when the original 300A passes through the reading sensor 140 from the state shown in FIG. 5, the original 300A is moved by the paper discharge roller 150 (not shown in FIG. 6) and the second pinch roller 154 as shown in FIG. Only transported. Also in the state of FIG. 6, since the document 300A is sandwiched between the paper discharge roller 150 and the second pinch roller 154, the connection structure 200 is disposed at the same position as in the state shown in FIG.

  Thereafter, when the original 300A passes through the paper discharge roller 150 and the second pinch roller 154 from the state shown in FIG. 6, the state shown in FIG. 7 is obtained. In the state shown in FIG. 7, the compression of the second urging unit 250 that has been compressed by the reaction force accompanying the passage of the original 300A is released. And the connection structure 200 returns to the state shown in FIG. Specifically, when the document 300A passes through the paper discharge roller 150 and the second pinch roller 154, the connecting structure 200 moves in a direction opposite to the separating direction when the state shown in FIG. The connection structure 200 is integrated by the first connection part 222 and the second connection part 228. The connection structure 200 is moved in the direction of the lower surface perpendicular to the conveyance direction of the document 300A, which is the direction opposite to the separation direction, by the thickness t of the document 300A by the urging force of the second urging unit 250. . That is, the connection structure 200 moves, that is, moves down in a direction in which the first pinch roller 134 approaches the outer peripheral surface of the paper feed roller 130 and the second pinch roller 154 approaches the outer peripheral surface of the paper discharge roller 150. Then, the first pinch roller 134 and the paper feed roller 130 are in contact with the second pinch roller 154 and the paper discharge roller 150. Moreover, the reading sensor 140 which comprises the connection structure 200 is arrange | positioned in the position shown in FIG. 3 in a 1st crossing direction. The lowering of the connection structure 200 is caused by the one end side first guide groove 268 and the other end side first guide groove 272, the one end side second guide groove 278, the other end side second guide groove 282, and the third guide groove 286. Done along. That is, the connection structure 200 is lowered while being guided by the first guide mechanism including the first guide portion 264 and the rotating shaft 136. Moreover, it is performed in a state of being guided by a second guide mechanism including the second guide portion 274 and the rotating shaft 156. Furthermore, it is performed in a guided state by a third guide mechanism including the third guide portion 284 and the protrusion 242.

  In the present embodiment, the document 300 </ b> A reaches the paper feed roller 130 and the first pinch roller 134. The document 300A passes through the paper discharge roller 150 and the second pinch roller 154. In such a case, according to the configuration of the present embodiment, the connection structure 200 can be moved while being guided by the first to third guide mechanisms. Therefore, for example, a special detection unit for detecting the thickness t of the document 300A is not used. In addition, the distance between the reading surface of the reading sensor 140 and the upper surface of the original 300A to be read can be maintained at a constant value that matches the focal length of the reading sensor 140 regardless of the thickness t of the original 300A. . Therefore, regardless of the thickness t of the original 300A, the upper surface of the original 300A can be read with the reading sensor 140 in focus.

  Further, in the configuration of the present embodiment, the reading sensor 140 does not move away from the upper surface of the document 300A when the document 300A reaches the reading sensor 140 or immediately before it. In the configuration of the present embodiment, the reading sensor 140 moves when the document 300A reaches the paper feed roller 130 on the upstream side of the reading sensor 140 in the transport direction. Therefore, the reading sensor 140 can be stopped at the time when reading by the reading sensor 140 is performed. Therefore, it is possible to realize a preferable reading without shaking. Furthermore, in the configuration of the present embodiment, the connection structure 200 moves in the first intersecting direction according to the thickness t of the document 300A. Therefore, it is possible to avoid a state in which the reading sensor 140 is in contact with the document 300A. Specifically, when the thick original 300A is conveyed, the CIS surface may be damaged due to friction between the original 300A and the CIS surface constituting the reading sensor 140, which adversely affects subsequent reading. According to the configuration of the present embodiment, occurrence of such a situation can be prevented.

  The configuration of the present embodiment can also be as follows. In the above, the connection structure 200 as shown in FIG. 2 was demonstrated to the example. In addition, the connection structure 200 is good also as the connection structure 400 which provided the connection part comprised by the 1st connection part 422 and the 2nd connection part 428 in the position as shown in FIG. Hereinafter, differences between the connection structure 400 and the connection structure 200 will be described, and description of the same or similar configurations will be omitted. Moreover, in FIG. 8, the same code | symbol is used about the structure which is common in the connection structure 400 and the connection structure 200. FIG.

  In the connection structure 400, the first connection portion 422 is disposed between the two first pinch rollers 134. The second connecting portion 428 is disposed between the second pinch rollers 154. In the connection structure 400, the first connection portion 422 connects the reading sensor 140 and the first pinch roller 134 at this position. Similarly, the second connecting portion 428 connects the reading sensor 140 and the second pinch roller 154.

  The first connection part 422 has a configuration corresponding to the first connection part 222 included in the connection structure 200. The second connection portion 428 has a configuration corresponding to the second connection portion 228 included in the connection structure 200. The first connecting portion 422 is configured by one end side first connecting portion 224 and the other end side first connecting portion 226. The one end-side first connecting portion 224 is disposed on one end side with respect to the center line L <b> 1 among both ends of the reading sensor 140 in the second crossing direction, similarly to the one end-side first connecting portion 224 of the first connecting portion 222. . The other end-side first connecting portion 226 is located on the other end side with respect to the center line L <b> 1 among both ends of the reading sensor 140 in the second crossing direction, similarly to the other end-side first connecting portion 226 of the first connecting portion 222. Be placed. The second connecting portion 428 is configured by one end side second connecting portion 230 and the other end side second connecting portion 232. The one end-side second connecting portion 230 is arranged on one end side with respect to the center line L1 in both ends of the reading sensor 140 in the second intersecting direction, like the one end-side second connecting portion 230 of the second connecting portion 228. . The other end-side first connecting portion 226 is located on the other end side with respect to the center line L <b> 1 among both ends of the reading sensor 140 in the second intersecting direction, similarly to the other end-side first connecting portion 226 of the second connecting portion 228. Be placed. In addition, the configuration of connection by the first connection portion 422 and the second connection portion 428 is also the same as that of the connection structure 200. In the connection structure 400, the second urging portion 250 contacts the first connection portion 422 at the same position as the connection structure 200, and urges the connection structure 400 at this position. In addition, a connection structure is good also as a structure by which the 1st connection part and 2nd connection part by a single structure are each arrange | positioned in the position which corresponds to the centerline L1.

  In addition, the connection structure 200 may be a connection structure 500 as illustrated in FIG. 9, and the scanner device 10 including the connection structure 500 and the third urging unit 530 may be used. With reference to FIG. 9, the structure which has the connection structure 500 grade | etc., And the 3rd biasing part 530 is demonstrated. However, hereinafter, differences between the connection structure 500 and the connection structure 200 will be described, and the description of the same or similar configurations will be omitted. Moreover, in FIG. 9, the same code | symbol is used about the structure which is common in the connection structure 500 and the connection structure 200. FIG. Note that the connection structure 500 is also in contact with the rotary shaft 136 at the same position as the connection structure 200, for example, the position shown in FIG. And the 2nd biasing part 250 biases the structure which contacts in the installed position, for example, the rotating shaft 136. FIG. Then, the second urging unit 250 urges the connection structure 500 in the direction of the lower surface in the vertical direction with respect to the conveyance direction of the document 300A to be conveyed (not shown in FIG. 9) in the first intersecting direction. . However, in FIG. 9, the second urging portion 250 is not shown.

  In the connection structure 500, the first connection part 522 includes an extension part 528 in addition to the one end side first connection part 224 and the other end side first connection part 226, and is constituted by these. The one end-side first connecting portion 224 and the other end-side first connecting portion 226 are the surfaces of the reading sensor 140 that face the outer peripheral surface of the first pinch roller 134 in the direction opposite to the conveying direction, like the connecting structure 200. Are attached so as to protrude in the direction opposite to the conveying direction. The one end side first connecting part 224, the other end side first connecting part 226, and the extending part 528 are integrally formed. The extending portion 528 is installed along the rotation shaft 136 at a position upstream of the first pinch roller 134 in the transport direction. That is, the extending portion 528 connects the protruding ends of the one end side first connecting portion 224 and the other end side first connecting portion 226 that protrude in this way along the rotation shaft 136.

  The third urging portion 530 is formed by an elastic member such as a coil spring. The third urging portion 530 is installed in contact with the extending portion 528. Then, the third urging unit 530 urges the connecting structure 500 in the direction of the lower surface in the vertical direction with respect to the conveyance direction of the document 300A (not shown in FIG. 9) in the first intersecting direction. The third urging portion 530 is arranged in contact with the extending portion 528 so that the compression direction coincides with the first intersecting direction.

  When the original 300A is conveyed by the separation roller 102 as described above, in the state shown in FIG. 9, the original 300A (not shown in FIG. 9) is replaced with the paper feed roller 130 (not shown in FIG. 9) and the first pinch. The roller 134 is reached. Then, the document 300A is sandwiched between the paper feed roller 130 and the first pinch roller 134. As a result, the second urging unit 250 is compressed by an amount corresponding to the thickness t of the document 300A in the first intersecting direction. The first pinch roller 134 moves together with the rotating shaft 136 upward in the first intersecting direction so as to be separated from the upper surface of the original 300A, that is, lifted in the separating direction. This point is as described above.

  In the configuration shown in FIG. 9, it is assumed that the second urging portion 250 is compressed and the first pinch roller 134 and the like are raised in the separation direction. The third biasing portion 530 biases the extending portion 528 in a direction opposite to the separation direction at a position upstream from the first pinch roller 134 in the transport direction. That is, the third urging unit 530 urges the extending portion 528 in this position in the direction of the lower surface on the vertical side with respect to the conveyance direction of the document 300A. In the connecting structure 500, the reading sensor 140, the second pinch roller 154, and the like are made the same as the first pinch roller 134 and the like by an urging force perpendicular to the conveying direction by the third urging unit 530. Force to raise in the direction works. That is, according to the lever principle, a force for raising the reading sensor 140 and the second pinch roller 154 connected by the second connecting portion 228 in the separating direction can be suitably applied. In this case, a point to which a force for raising the first pinch roller 134 is applied becomes a fulcrum. The point on the extended portion 528 where the third urging portion 530 and the extending portion 528 are in contact with each other and the urging force in the vertical lower surface side direction with respect to the conveying direction by the third urging portion 530 is an action point. Thereby, in the scanner device 10 having the connection structure 500 including the extending portion 528 and the third urging portion 530, the connection structure 500 can be suitably raised in the separation direction. In other words, the first pinch roller 134, the reading sensor 140, and the second pinch roller 154 can be reliably moved up in this direction by reliably interlocking with each other.

  In the above description, the second urging unit 250 is installed in contact with the rotating shaft 136, and at this position, the rotating shaft 136 is placed on the lower surface side perpendicular to the conveying direction of the document 300 </ b> A in the first intersecting direction. Energized in the direction. As a result, the second urging unit 250 has been described as an example of a configuration that urges the connection structure 200 in the direction of the lower surface on the vertical side with respect to the conveyance direction of the document 300A. In addition, the second urging unit 250 may be disposed so as to contact at least one of the first pinch rollers 134 or at least one of the second pinch rollers 154. In this case, the second urging unit 250 causes the first pinch roller 134 or the second pinch roller 154 to move the first pinch roller 134 or the second pinch roller 154 in the direction of the lower surface in the first crossing direction perpendicular to the conveyance direction of the document 300A. Energize to. As a result, the second urging unit 250 urges the connecting structure 200 in the direction of the lower side perpendicular to the conveyance direction of the document 300A. The second urging unit 250 may be disposed so as to contact the one end side first connecting portion 224 and / or the other end side first connecting portion 226 that constitute the first connecting portion 222. In this case, the second urging unit 250 moves the one end-side first connecting portion 224 and / or the other end-side first connecting portion 226 in the transport direction of the document 300A in the first intersecting direction at the installed position. Is biased in the direction of the vertical lower surface. As a result, the second urging unit 250 urges the connecting structure 200 in the direction of the lower side perpendicular to the conveyance direction of the document 300A. In addition, when the 2nd urging | biasing part 250 is installed in the one end side 1st connection part 224 and the other end side 1st connection part 226, the two 2nd urging | biasing parts 250 are installed in each position. .

  Further, the second urging portion 250 may be installed so as to contact the one end side second connecting portion 230 and / or the other end side second connecting portion 232 constituting the second connecting portion 228. In this case, the second urging unit 250 moves the one-end-side second connecting portion 230 and / or the other-end-side second connecting portion 232 in the transport direction of the document 300A in the first intersecting direction at the installed position. Is biased in the direction of the vertical lower surface. As a result, the second urging unit 250 urges the connecting structure 200 in the direction of the lower side perpendicular to the conveyance direction of the document 300A. In addition, when the 2nd biasing part 250 is installed in the one end side 2nd connection part 230 and the other end side 2nd connection part 232, the two 2nd biasing parts 250 are installed in each position. . The second urging unit 250 may be installed so as to contact the rotating shaft 156. In this case, the second urging unit 250 urges the rotation shaft 156 in the lower side direction perpendicular to the conveyance direction of the document 300A in the first intersecting direction at the installed position. As a result, the second urging unit 250 urges the connecting structure 200 in the direction of the lower side perpendicular to the conveyance direction of the document 300A. The second urging unit 250 may be installed so as to contact the upper surface of the cover body 260. In this case, the second urging unit 250 urges the upper surface of the cover 260 at the installed position in the direction of the lower surface perpendicular to the conveyance direction of the document 300A in the first intersecting direction. As a result, the second urging unit 250 urges the connecting structure 200 in the direction of the lower side perpendicular to the conveyance direction of the document 300A. The upper surface of the cover body 260 is a surface in the first intersecting direction of the cover body 260 and is a surface on the side where the accommodating portion 288 is formed.

  Further, the second urging portion 250 includes a rotation shaft 136, a first pinch roller 134, a second pinch roller 154, one end side first connecting portion 224, the other end side first connecting portion 226, and one end side. Of the configurations of the second connecting portion 230, the other end side second connecting portion 232, the rotating shaft 156, and the cover body 260, a plurality of the connecting portions may be provided so as to contact at least two locations. In this case, at each position, each of the second urging units 250 urges each of the contacted components in the above-described direction. Accordingly, each of the second urging units 250 urges the connection structure 200 in the above-described direction on the upper surface of the document 300A. Such a configuration is the same in the connection structure 400 shown in FIG. 8 and the connection structure 500 shown in FIG. Also in such a configuration, when the original 300A reaches the paper discharge roller 150 and the first pinch roller 134, the connection structure 500 is raised as described above. Further, the lowering when the document 300A passes through the paper discharge roller 150 and the second pinch roller 154 is also performed as described above. That is, the connection structure 500 is raised and lowered in a state of being guided by the first guide mechanism including the first guide portion 264 and the rotating shaft 136. Moreover, it is performed in a state of being guided by a second guide mechanism including the second guide portion 274 and the rotating shaft 156. Furthermore, it is performed in a guided state by a third guide mechanism including the third guide portion 284 and the protrusion 242.

  In the above description, the thickness direction of the document 300A is illustrated as the first intersecting direction. Further, the vertical direction of the conveyance direction, the separation direction, the vertical lower surface direction or the vertical upper surface direction with respect to the conveyance direction of the original 300A, and the like are described by exemplifying the same as or included in the thickness direction of the original 300A. . However, the first crossing direction may be a different direction. That is, the first intersecting direction may be any direction that intersects the conveyance direction of the document 300A on the surface that intersects the document surface of the document 300A as described above. Therefore, for example, the plane that intersects the document surface of the document 300A perpendicularly may be inclined (except for the vertical) and intersect the document 300A conveyance direction. In addition, the plane intersecting the original surface of the original 300A with an inclination (excluding vertical) may be a direction perpendicular to the conveying direction of the original 300A or with an inclination (excluding vertical). In this case, the second urging unit 250 urges the connection structures 200, 400, and 500 in the direction set as the first intersecting direction. Further, the first guide mechanism by the first guide portion 264 and the rotating shaft 136 is configured to correspond to the direction set as the first intersecting direction. The second guide mechanism including the second guide portion 274 and the rotating shaft 156 is also configured corresponding to this direction. Further, a third guide mechanism including the third guide portion 284 and the protrusion 242 is also configured corresponding to this direction.

  In the above description, the first pinch roller 134 and the reading sensor 140 are connected by the first connecting portion 222. Further, the second pinch roller 154 and the reading sensor 140 are connected by the second connecting portion 228. In addition, the scanner device 10 having the connection structure 200 in which the components are connected in this way has been described as an example. Incidentally, the arrangement of the paper feed roller 130 and the first pinch roller 134 may be reversed and / or the arrangement of the paper discharge roller 150 and the second pinch roller 154 may be reversed. In this case, the arrangement of the rotation shaft 132 and the rotation shaft 136 is also changed, and / or the arrangement of the rotation shaft 152 and the rotation shaft 156 is also changed.

  The sheet feeding roller 130 and the first pinch roller 134 will be specifically described as an example. The paper feed roller 130 is installed via the rotary shaft 132 at a position where the first pinch roller 134 is provided via the rotary shaft 136. The rotating shaft 132 is installed in the same manner as the rotating shaft 136 with respect to the first connecting portion 222 and the first guide portion 264. The paper discharge roller 150 and the second pinch roller 154 are similarly installed. The rotating shaft 152 is installed in the same manner as the rotating shaft 156 with respect to the second connecting portion 228 and the second guide portion 274. In other words, the connection structure includes the paper feed roller 130, the reading sensor 140, the paper discharge roller 150, and the like. The second urging unit 250 urges, for example, the rotation shaft 132 in the direction of the lower side perpendicular to the conveyance direction of the document 300A in the first intersecting direction. The first guide portion 264 and the rotation shaft 132 constitute a first guide mechanism. The second guide portion 274 and the rotation shaft 152 constitute a second guide mechanism. In addition, the movement (raising and lowering) of the connection structure configured in this way in the first crossing direction is performed in the same manner as in the case of the connection structure 200 and the like. Therefore, the description about this is abbreviate | omitted.

  The connection structures 400 and 500 and other configurations described above can achieve the same advantageous effects as those of the above-described embodiment including the connection structure 200 and the like, and obtain advantageous effects.

DESCRIPTION OF SYMBOLS 10 Scanner apparatus 134 1st pinch roller 136 Rotating shaft 140 Reading sensor 200,400,500 Connection structure 222,422,522 First connection part 224 One end side first connection part 225 One end side first through hole 226 The other end side first 1 connection part 250 2nd urging part 300,300A manuscript

Claims (11)

An image reading apparatus that conveys an original and optically reads an image recorded on the original,
A contact-type reading sensor that irradiates light to the document being conveyed and reads reflected light from the document;
A first roller that is provided on the upstream side of the reading sensor in the conveyance direction of the original so as to be in contact with one side of the original surface of the original that is read by the reading sensor and that conveys the original while rotating. When,
A connecting portion for connecting the reading sensor and the first roller;
A moving unit that moves the reading sensor and the first roller coupled by the coupling unit in a first intersecting direction intersecting the transport direction on a surface intersecting the document surface of the document transported; An image reading apparatus.   The original surface of the original to be conveyed as the first crossing direction as the first roller is brought into contact with the original conveyed by the conveyance of the original to the first roller. The image reading apparatus according to claim 1, wherein the moving unit moves the reading sensor in the separation direction in association with movement in a separation direction away from the image pickup device. The moving unit includes an urging unit that urges at least one of the first roller and the connecting unit in a lower surface side direction with respect to the document conveying direction in the first intersecting direction.
The reading sensor is arranged at a predetermined position in the first crossing direction by urging by the urging unit,
When the original conveyed by the first roller is brought into contact with the first roller, the moving unit moves in the separation direction against the urging by the urging unit. The image reading apparatus according to claim 2, wherein the image reading apparatus moves.   4. The image reading apparatus according to claim 1, further comprising a guide mechanism that guides movement in the first intersecting direction by the moving unit. 5.   5. The image reading according to claim 4, wherein the guide portion is disposed on at least one end side of the reading sensor in a second intersecting direction intersecting the transport direction on the document surface of the document to be transported. apparatus. The reading sensor and the first roller are provided on an upper surface side, which is an upper side in a conveyance state, of a document surface of the document to be conveyed,
6. The image reading apparatus according to claim 1, wherein the connecting portion connects the reading sensor and the first roller on an upper surface side of the conveyed document. 7. . The connecting portion has a first through hole through which a first rotating shaft to which the first roller is attached passes.
The connecting part is attached to the reading sensor, and the first rotating shaft is inserted into the first through hole, whereby the reading sensor and the first roller are connected by the connecting part. The image reading apparatus according to any one of claims 1 to 6. A second roller provided on the downstream side of the reading sensor in the conveying direction of the original so as to contact the one side surface of the original read by the reading sensor and for conveying the original while rotating; ,
The connecting portion connects the reading sensor, the first roller, and the second roller,
The said moving part moves the said reading sensor, the said 1st roller, and the said 2nd roller which were connected by the said connection part to the said 1st crossing direction, Any one of Claims 1-5 characterized by the above-mentioned. The image reading apparatus according to claim 1. The connecting portion has a first through hole through which a first rotation shaft to which the first roller is attached and a second through hole through which a second rotation shaft to which the second roller is attached passes.
The connecting portion is attached to the reading sensor, the first rotating shaft is inserted into the first through hole, and the second rotating shaft is inserted into the second through hole, whereby the reading sensor and the first rotating shaft are inserted. The image reading apparatus according to claim 8, wherein one roller and the second roller are connected by the connecting portion. The connecting portion includes one end side connecting portion disposed on one end side of the reading sensor in a second intersecting direction intersecting the transport direction on the document surface of the document being transported, and the reading sensor in the second intersecting direction. Including the other end side connecting portion disposed on the other end side of
The one end side connecting portion has a first end side first through hole through which a first rotating shaft to which the first roller is attached passes;
The other end side connecting portion has a first other end side first through hole through which the first rotating shaft passes,
The one end side first through hole and the other end side first through hole are arranged so as to coincide with the center of the reading sensor in the first crossing direction. 7. The image reading apparatus according to any one of items 6.   The image reading apparatus according to claim 1, wherein the moving unit is formed of an elastic member that is elastically deformable in the first intersecting direction.

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