JP2016064913A - Conveyance device and image recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress lowering of detection accuracy by a sensor.SOLUTION: A second conveying roller 62 is made into a state of being pressure-contacted on an opposite roller 63 and a state of being separated from the opposite roller 63 by sliding of a slide member 90A in a longitudinal direction 8. A first detected body 17A is slid in a vertical direction 7 by the sliding of the slide member 90A. A first sensor 14M for detecting the first detected body 17A is mounted on a control board 14C supported by a substrate support base 14B. The first sensor 14M determines whether the second conveying roller 62 is in the state of being pressure-contacted on the opposite roller 63 or the state of being separated from the opposite roller on the basis of a state of detecting the first detected body 17A or a state of not detecting the first detected body.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a transport device that transports a transported object such as a sheet, and an image recording apparatus including such a transport device.

  2. Description of the Related Art Conventionally, an ink jet recording apparatus that records an image by ejecting ink droplets from a nozzle provided in a recording unit onto a sheet such as recording paper is known. In an ink jet recording apparatus, a flat platen (supporting member) that supports a sheet is usually provided at a position facing the recording unit. A sheet is conveyed on the platen by a sheet conveying device. The sheet is stopped when it reaches a predetermined position on the platen facing the recording unit. In such a state, ink droplets are selectively ejected from the recording unit onto the sheet, and an image is formed on the sheet.

  Patent Document 1 discloses a configuration in which a single sensor detects whether or not a paper feeding cassette that can accommodate a sheet conveyed on a platen is attached and whether there is a recording paper in the paper feeding cassette. In this configuration, a substrate on which a high-voltage power supply or the like is mounted is provided on the upper side of the paper feed cassette, and a sensor is mounted on the substrate. Further, a detection lever body detected by a sensor is rotatably provided on a rotation shaft of a paper feed roller for feeding out the recording paper in the paper feed cassette. The detection lever body rotates in contact with the recording paper in the paper feed cassette, and the sensor detects that the detection lever body has rotated to a predetermined position. The attachment / detachment of the paper feed cassette and the presence / absence of recording paper in the paper feed cassette are determined based on the detection result of the rotation position of the detection lever body by the sensor.

JP 2006-28211 A

  Since the motor power is normally transmitted to the rotating shaft of the paper feed roller via a power transmission mechanism such as a gear, there is a possibility that deformation such as bending or warping may occur during rotation. For this reason, when deformation or the like occurs in the rotation shaft of the paper feed roller, the posture or the like of the detection lever body relative to the rotation shaft of the paper feed roller changes. In this case, although the detection lever body is in contact with the recording paper of the paper feed cassette, the detection lever body is not in a predetermined rotation posture. There is a possibility that the presence or absence of the recording paper in the paper cassette cannot be accurately detected.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a conveyance device that can suppress a decrease in detection accuracy by a sensor, and an image recording apparatus including such a conveyance device. It is to be.

  (1) A transport apparatus according to the present invention constitutes a part of a transport path, and controls a path configuration member that can move to a first state and a second state, and transport of an object to be transported in the transport path. A control board on which components for mounting are mounted; a support member that supports the control board; a first slide position that is supported by the support member and that makes the path component member in the first state; and the second state A slide member slidable to the second slide position, and movable in conjunction with the slide of the slide member, and as the slide member slides from the first slide position to the second slide position, A detection object that moves from a detection position to a non-detection position, a sensor that is mounted on the control board, detects the detection object at the detection position, and is provided on the support member. And a guide member for guiding the.

  According to such a configuration, the detection target interlocked with the slide of the slide member supports the control board on which the sensor is mounted, and is guided by the guide member provided on the support member that supports the slide member. Thus, since the movement between the detection position and the non-detection position is performed, it is possible to suppress a decrease in detection accuracy of the detection target by the sensor. The detected object may have a simple configuration because it only needs to be able to move between the detection position and the non-detection position.

  (2) The detected object may be guided by the guide member and move in the vertical direction, and the slide member may slide in a direction perpendicular to the vertical direction.

  Thereby, even if it is the structure which slides the to-be-detected body in the direction orthogonal to the sliding direction of a slide member, it can move stably with a guide member.

  (3) Preferably, the detected body has a shape along the vertical direction, and a lower end portion is provided below the control board, and is provided on an upper portion of the main body portion. And a detected portion detected by the sensor at a detection position.

  Thereby, the space for arrange | positioning a to-be-detected body can be made small.

  (4) Preferably, the slide member has a contact portion that contacts the detected body at the first slide position, and the contact portion contacts a lower end portion of the main body portion at the detection position. The flat surface and the flat surface are continuously provided on the downstream side in the sliding direction from the first slide position to the second slide position, and the detected object is detected as the downstream side is reached. And an inclined surface for guiding from the position toward the non-detection position.

  According to the said structure, a to-be-detected body can be smoothly moved by the slide of a slide member.

  (5) Preferably, the path constituent member is a transport roller that transports the object to be transported, and is capable of coming into contact with and separating from a facing roller disposed to face the transport roller. It abuts on the roller, and is separated from the opposing roller in the second state.

  According to the above configuration, it is possible to detect with high accuracy that the conveying roller is in a state of being pressed against the opposing roller.

  (6) Another conveying apparatus of the present invention is capable of accommodating an object to be conveyed, an accommodating tray that is slidable to the first position and the second position, and a base portion that slidably supports the accommodating tray; A control board on which components for controlling conveyance of the object to be conveyed in the conveyance path are mounted; a support member that is supported on the base portion and supports the control board on the upper side of the storage tray; and An object to be detected that is movable in conjunction with a slide of the storage tray, wherein the storage tray moves from the detection position to the non-detection position as the slide from the first position to the second position; A sensor that is mounted and detects the detected object at the detection position, and a guide member that is provided on the support member and guides the movement of the detected object.

  According to the above configuration, the detected object that is moved by the slide of the storage tray is supported by the base portion that slidably supports the storage tray, and is provided on the support member that supports the control board on which the sensor is mounted. By being guided by the member, movement between the detection position and the non-detection position can suppress a decrease in detection accuracy of the detection target by the sensor. Therefore, it can be detected with high accuracy that the storage tray is at the supply position. In addition, the detected object only needs to be able to move between the detection position and the non-detection position, so that the configuration can be simplified.

  (7) Preferably, the first position is a supply position at which an object to be conveyed accommodated in the accommodation tray is supplied to the conveyance path, and the second position is a predetermined position slid from the supply position. .

  Thereby, it can be detected whether the storage tray is the supply position or the predetermined position slid from the supply position.

  (8) Preferably, the detection target is guided by the guide member and moves in the vertical direction, and the storage tray slides in a direction perpendicular to the vertical direction.

  According to such a configuration, it is only necessary that the detected object can be moved in the vertical direction by the guide member, so that the configuration can be simplified.

  (9) Preferably, the apparatus further includes a rotation member that rotates by contact with the storage tray at the supply position, and the detected body has a shape along the vertical direction, and a lower end portion of the control board. A main body portion located on the lower side of the main body portion, and a detected portion that is provided at an upper portion of the main body portion and is detected by the sensor at the detection position. And abuts against the lower end of the main body of the detected body to move the detected body to the non-detection position.

  According to the said structure, a to-be-detected body can be set as a simple structure. In addition, it can be reliably detected by the sensor on the control board that the storage tray that slides on the base portion is in the supply position.

(10) Preferably, the storage tray includes a flat plate portion having a support surface that supports the object to be conveyed, and an upright portion that stands up from the flat plate portion at a position outside the support surface,
The rotating member rotates by contact with the upright portion that moves as the storage tray slides.

  According to the above configuration, the upright portion provided in the storage tray does not come into contact with the object to be conveyed supported by the support surface, and therefore there is no possibility that the rotating member comes into contact with the object to be conveyed.

  (11) Still another transport apparatus according to the present invention constitutes a part of a transport path, and can accommodate a path constituent member movable to the first state and the second state, and an object to be transported. A control board on which a storage tray slidable in the first position and the second position, a base portion that supports the storage tray so as to be slidable, and components for controlling the transport of the object to be transported in the transport path are mounted. And a support member that supports the control board on the upper side of the storage tray, and a support member that is supported by the support member, and sets the path component member in the first state. A slide member slidable to a slide position and a second slide position to be in the second state, and movable in conjunction with the slide of the slide member; The first detected body that moves from the detection position to the non-detection position with the slide to the two-slide position is movable in conjunction with the slide of the storage tray, and the storage tray is moved from the first position to the above-described position. A second detected object that moves from a detection position to a non-detection position with a slide to the second position, and a first sensor that is mounted on the control board and detects the first detected object at the detection position A second sensor that is mounted on the control board and detects the second object to be detected at the detection position; and a movement of the first object to be detected and the second object to be detected provided on the support member. And a guide member for guiding.

  According to the said structure, a to-be-detected body can be set as a simple structure. In addition, the sensor on the control board can reliably detect whether the path component is in the first state or the second state and that the storage tray that slides on the base portion is the supply position. it can.

  (12) Preferably, the guide member is formed integrally with the support member.

  Thereby, the manufacturing cost of a guide member and a supporting member can be reduced.

  (13) An image recording apparatus according to the present invention includes the transport device and a recording unit that records an image on a transported object transported by the transport device.

  According to the above configuration, it is possible to detect with high accuracy that the transport device is in a predetermined state, and it is possible to appropriately record an image on the transported object.

  According to the present invention, the object to be detected detected by the sensor can be stably moved, so that the configuration can be simplified, and a decrease in detection accuracy by the sensor can be suppressed.

FIG. 1 is a perspective view of a multifunction machine 10 as an example of an embodiment of the present invention. FIG. 2 is a longitudinal sectional view schematically showing the internal structure of the printer unit 11. FIG. 3 is a perspective view of the housing 14 in an exploded state. FIG. 4 is a perspective view for explaining a supporting structure of main members by the left side frame 47 and the right side frame 48. FIG. 5 is a perspective view of the left slide member 90A. FIG. 6 is a cross-sectional view of the slide member 90A in a state where the left slide member 90A is slid most forward. 7A is a side view showing the slide member 90A together with the substrate support 14B, and FIGS. 7B and 7C are explanatory views of the operation of the slide member 90A. FIG. 8 is a perspective view for explaining the configuration of the operation lever 97 and the feeding tray 20, and the base portion 14A, the substrate support base 14B and the like are omitted. FIG. 9 is a perspective view of the substrate support 14B. FIG. 10 is a perspective view of a state in which the feeding tray 20 is slid forward from the state of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings as appropriate. The embodiment described below is merely an example of the present invention, and it is needless to say that the embodiment of the present invention can be changed as appropriate without departing from the gist of the present invention. In the following description, the vertical direction 7 is defined with reference to the state in which the multifunction machine 10 is installed (the state in FIG. 1), and the side where the feeding tray 20 appears is the front side (front side). A direction 8 is defined, and a left-right direction 9 is defined when the multifunction machine 10 is viewed from the front side (front).

[Overall configuration of MFP 10]
A multifunction machine 10 (an example of an image recording apparatus of the present invention) shown in FIG. 1 has various functions such as a facsimile function and a print function. The multifunction machine 10 includes a housing 14 configured in a generally thin rectangular parallelepiped shape, and a feeding tray 20 mounted in a lower portion of the housing 14. The feeding tray 20 can be pulled forward from the housing 14.

  Inside the housing 14, a discharge space 13 in which the recording paper 12 is printed out is provided above the front portion of the feeding tray 20. The discharge space 13 opens forward. A discharge tray 21 on which the recording paper 12 to be printed out is placed is positioned below the discharge space 13. The discharge tray 21 is supported on the feeding tray 20.

  As shown in FIG. 2, the printer unit 11 is provided in the upper part on the rear side in the housing 14 and records an image on a recording medium by an ink jet method. A flat plate portion 22 having a support surface for supporting a plurality of recording papers 12 (see FIG. 2) is provided below the feeding tray 20, and the recording paper 12 is provided on the support surface of the flat plate portion 22. Are accommodated in a state of being stacked in the vertical direction 7. The multifunction machine 10 has a function of recording an image on one side of the recording paper 12 accommodated in the feeding tray 20 and a function of recording an image on both sides of the recording paper 12. The multifunction machine 10 also has a function of recording an image on the surface of a recording medium such as a CD-ROM or a DVD-ROM. The recording paper 12 and the recording medium are examples of the recording medium.

  Below the printer unit 11, a feeding unit 16 that feeds the recording paper 12 in the feeding tray 20 to the printer unit 11 is provided. The feeding unit 16 has a feeding roller 25 that abuts against the uppermost recording sheet 12 in the feeding tray 20 and feeds it backward. The feed roller 25 is supported by a support arm 26 so as to be rotatable at a position where it abuts on the uppermost recording paper 12 in the feeding tray 20 and a position spaced upward from the recording paper 12. The power of a feed motor (not shown) is transmitted to the feed roller 25 by a power transmission mechanism 27.

  At the rear part of the housing 14, a first conveyance path 33 is provided for conveying the recording paper 12 fed from the feeding tray 20 by the feeding unit 16 upward. The first transport path 33 is configured in an arc shape protruding rearward by an outer peripheral guide member 33A positioned on the rear side and an inner peripheral guide member 33B positioned on the front side.

  The recording paper 12 fed out from the feeding tray 20 enters the first transport path 33 from the lower end portion of the first transport path 33 and is discharged forward from the upper end portion of the first transport path 33. A second transport path 34 along which the recording paper 12 transported along the first transport path 33 is linearly transported is provided along the front-rear direction 8 at the top of the printer unit 11. The second transport path 34 extends from the upper end of the first transport path 33 to above the rear end of the discharge tray 21.

  In the second conveyance path 34, a first conveyance roller pair 59, a platen 42, a second conveyance roller pair 44, a path switching guide 36, and a reverse roller pair 45 are provided in order. A part of the second transport path 34 is formed.

  The first transport roller pair 59 includes a first transport roller 60 disposed on the upper side and a pinch roller 61 disposed on the lower side. When the recording paper 12 is transported in the second transport path 34, the first transport roller pair 59 is in a state where the first transport roller 60 and the pinch roller 61 are in pressure contact with each other. Is driven to rotate.

  A platen 42 disposed between the first transport roller pair 59 and the second transport roller pair 44 supports the recording paper 12 transported in the second transport path 34 from below. A recording unit 24 that records an image on the recording paper 12 supported by the platen 42 is provided above the platen 42.

  In the vicinity of the first conveying roller pair 59, an abutting member 80 that abuts against the recording paper 12 conveyed onto the platen 42 and presses it against the platen 42 side is provided. The recording paper 12 with which the abutting member 80 abuts is in a wavy state along the left-right direction 9.

  Above the platen 42, a first guide rail 56 and a second guide rail 57 are provided, each extending along the left-right direction 9 with a predetermined interval in the front-rear direction 8. The recording unit 24 includes a carriage 40 that is slidably supported by the first guide rail 56 and the second guide rail 57, and a recording head 38 that is disposed below the carriage 40. The recording head 38 is provided with nozzles 39 that eject ink downward from a plurality of ejection ports. Ink is supplied to the nozzle 39 from an ink cartridge (not shown).

  The second transport roller pair 44 disposed in front of the platen 42 includes a second transport roller 62 disposed on the lower side and a counter roller 63 disposed on the upper side. When the recording paper 12 is transported, the second transport roller pair 44 is rotationally driven by the second transport roller 62 on the lower side being pressed against the opposing roller 63.

  When the recording sheet 12 conveyed by the second conveying roller pair 44 comes into contact with the path switching guide 36, the recording sheet 12 passes over the path switching guide 36. Further, as will be described later, when the recording sheet 12 guided to the reversing roller pair 45 through the path switching guide 36 is positioned between the path switching guide 36 and the reversing roller pair 45, the recording paper 12 is guided to the reversing roller pair 45. By contacting the route switching guide 36, the route is guided below the route switching guide 36.

  The reverse roller pair 45 includes a lower reverse roller 67 and a reverse counter roller 68 disposed above the reverse roller 67. The reverse roller 67 can rotate forward and backward. The reverse counter roller 68 rotates following the rotation of the reverse roller 67 in a state where the reverse roller 68 is in pressure contact with the reverse roller 67.

  The direction in which the reversing roller 67 rotates is referred to as normal rotation when the recording paper 12 is conveyed forward, and is referred to as reverse rotation when the recording paper 12 is conveyed backward. When an image is recorded only on one side of the recording paper 12, the reverse roller 67 is rotated forward, and the recording paper 12 conveyed by the reverse roller pair 45 is discharged onto the discharge tray 21.

  When images are recorded on both sides of the recording paper 12, the reversing roller 67 is rotated forward and conveyed until just before the rear end portion of the recording paper 12 having the image recorded on one side passes through the reversing roller pair 45. After that, the reverse roller 67 is reversed. As a result, the recording paper 12 is conveyed rearward toward the path switching guide 36 and guided below the path switching guide 36. A branch conveyance guide 71 is provided from the lower side of the path switching guide 36 to the lower end of the first conveyance path 33. A third transport path 73 is formed by the branch transport guide 71. The recording paper 12 conveyed along the branch conveyance guide 71 is conveyed to the lower end portion of the first conveyance path 33 by the intermediate conveyance roller pair 72.

[Case 14]
As shown in FIG. 3, the housing 14 has a lower base portion 14A and a substrate support (support member) 14B provided above the front portion of the base portion 14A. A control board 14C is provided on the board support 14B.

  The base portion 14 </ b> A has side portion structures 14 </ b> D and 14 </ b> E provided along the front-rear direction 8 on both sides of the left-right direction 9. Although not shown in each figure, the side parts 14D and 14E are provided with a power supply device, an ink cartridge, and the like. The upper part of the front side of each side part structure 14D and 14E is connected by the connection body 14F. The discharge space 13 is defined by the side components 14D and 14E and the connecting body 14F. The feeding tray 20 is slidable in the front-rear direction 8 with respect to the discharge space 13 between the side structure bodies 14D and 14E.

  Components for controlling the conveyance of the recording paper 12, the ejection of ink in the recording unit 24, and the like are mounted on the control board 14C. In addition, a first sensor 14M (right side) and a second sensor 14N (left side) are mounted in a state of being arranged in the left-right direction 9 on the rear side portion of the left side portion of the control board 14C. The second sensor 14N on the left side is provided to detect attachment / detachment of the feeding tray 20, and the first sensor 14M on the right side is provided to detect a slide position of a slide member 90A described later.

  A left side frame 47 and a right side frame 48 that extend along the vertical direction 7 and the front / rear direction 8 are provided on both sides of the rear portion of the base portion 14A in the left / right direction 9. A first guide rail 56 and a second guide rail 57 are supported on the left side frame 47 and the right side frame 48. 3 and 4, the second guide rail 57 is omitted. As shown in FIG. 4, a contact member 80 is attached to the first guide rail 56. The contact member 80 has a plurality of contact main body portions 81 extending downward on the front side of the first guide rail 56. Each contact main body 81 covers the front portion of the first transport roller pair 59, and a contact portion 81 </ b> A that contacts the recording paper 12 on the platen 42 is provided at each front end portion.

[Left side frame 47 and right side frame 48]
The left side frame 47 and the right side frame 48 are provided with notches 47A and 48A, respectively. End portions on both sides of the roller shaft 60A of the first transport roller 60 are rotatably supported by the notches 47A and 48A.

  On each of the left side frame 47 and the right side frame 48, a roller shaft 62A of the second transport roller 62 is supported so as to be movable in the vertical direction 7 in a rotatable state. A front side portion of the platen 42 is rotatably supported on the roller shaft 62A of the second transport roller 62. The left side frame 47 and the right side frame 48 are provided with support holes 47B and 48B for supporting a roller shaft 67A (see FIG. 2) of the reverse roller 67, respectively. The support hole portions 47B and 48B rotatably support the respective end portions on both sides of the roller shaft 67A while being movable in the vertical direction 7.

[Sliding members 90A and 90B]
Slide members 90 </ b> A and 90 </ b> B extending along the front-rear direction 8 are provided inside the left side frame 47 and the right side frame 48. The slide members 90A and 90B have substantially the same configuration, and each of the slide members 90A and 90B has a front-rear direction 8 on the guide plates 47G and 48G (see FIG. 3) provided at the bottom of the left side frame 47 and the right side frame 48, respectively. Is slidably supported by. The roller shaft 62A of the second transport roller 62 and the roller shaft 67A of the reversing roller 67 are slid in the vertical direction 7 by sliding of the slide members 90A and 90B.

  As shown in FIG. 5 to FIG. 7A, a slide cam portion 93 that rotates the platen 42 in the vertical direction 7 is provided at the rear end portion of the slide member 90 </ b> A. The upper surface of the slide cam portion 93 is a cam surface that moves the platen 42 in the vertical direction 7 by sliding the slide member 90 </ b> A in the front-rear direction 8.

  The slide member 90A is provided with a first flat surface 92B and a first inclined surface 92C successively from the front side of the slide cam portion 93. The first inclined surface 92C is inclined so as to become higher toward the front side. A first urging mechanism 94 that urges the second conveying roller 62 upward is provided further on the front side of the first inclined surface 92C.

  In the slide member 90A, a second flat surface 92D and a second inclined surface 92E are successively provided in order in the forward direction of the first urging mechanism 94. Similarly to the first inclined surface 92C, the second inclined surface 92E is inclined so as to become higher toward the front side. A second urging mechanism 95 that urges the reverse roller 67 upward is provided on the front side of the second inclined surface 92E.

  A connecting portion 96 is provided at the front end of the slide member 90A. The connecting portion 96 is connected to an operation lever 97 (see FIG. 8) disposed in a region surrounded by the substrate support base 14B. The right slide member 90B has the same configuration as the slide member 90A except that only the configuration of the connecting portion 96 is different. The configuration of the connecting portion 96 in the slide member 90B will be described later.

<First Energizing Mechanism 94 and Second Energizing Mechanism 95>
The first urging mechanism 94 of the slide member 90A includes a rotating member 94A provided continuously on the front side of the first inclined surface 92C, and a coil spring (elastic member) 94B that urges the rotating member 94A upward. ,have. The front end of the rotation member 94A is supported by the slide member 90A so as to rotate about a horizontal axis along the left-right direction 9.

  The upper surface of the rotating member 94A is a contact portion that contacts the roller shaft 62A of the second transport roller 62, and the roller shaft 62A of the second transport roller 62 is in the front-rear direction at the front portion of the contact portion. A restricting portion 94 </ b> F that restricts sliding to 8 is provided. The restricting portion 94F is an arc-shaped concave surface into which the roller shaft 62A is fitted. On the contact surface of the rotating member 94A, a flat first region 94G is provided continuously on the rear side of the restricting portion 94F, and further on the rear side of the first region 94G. A second region 94H inclined so as to be lowered is provided.

  The coil spring 94B urges the rotating member 94A upward from below the first region 94G in the rotating member 94A. An engaging arm 94J extending downward along the vertical direction 7 is provided below the front portion of the rotating member 94A. The lower end portion of the engagement arm 94J is an engagement portion 94K (see FIG. 6) protruding forward. The slide member 90A has a first restricting portion that engages with the engaging portion 94K of the engaging arm 94J on the front side of the rotating member 94A and restricts the rotating member 94A from rotating above a predetermined position. 92K is provided.

  When the turning member 94A is turned slightly downward from the state in which the turning upward is restricted by the first restricting portion 92K, the turning member 94A is continuously inclined to the first inclined surface 92C on the front side of the first biasing mechanism 94. become.

  The second urging mechanism 95 that urges the reverse roller 67 upward has the same configuration as the first urging mechanism 94, and includes a rotating member 95A and a coil spring 95B. The contact surface of the upper surface of the rotation member 95A is a restricting portion 95F, a first region 95G, and a second region 95H. The rotation member 95A is provided with an engagement arm 95J having an engagement portion 95K (see FIG. 6). The slide member 90A is engaged with the engagement arm 95J on the rear side of the rotation member 95A. A second restricting portion 92M that engages with the portion 95K is provided. The second inclined surface 92E provided on the front side of the second urging mechanism 95 is in the same inclined state as the first inclined surface 92C.

<Connection part 96>
The connecting portion 96 includes a switch cam portion 96A provided continuously on the front side of the second urging mechanism 95 and a connecting main body portion 96B provided continuously on the front side of the switch cam portion 96A. ing. The connection main body portion 96B is located at the foremost portion of the slide member 90A and faces the left side surface portion 14G of the substrate support base 14B.

  The upper surface of the switch cam portion 96A is a cam surface that slides the first detected body 17A (see FIG. 7) detected by the first sensor 14M in the vertical direction 7. Specifically, the cam surfaces are a first cam surface 96D, a second cam surface 96E, and a third cam surface 96F in order from the rear side to the front side. The first cam surface 96D is a flat surface along the front-rear direction 8. The second cam surface 96E is inclined so as to become lower toward the front side. The third cam surface 96F is a flat surface that continues from the front end of the second cam surface 96E along the front-rear direction 8.

  The connection main body portion 96B protrudes upward from the front end of the third cam surface 96F, and the upper surface is a flat surface located above the first cam surface 96D. A coupling portion 97D (see FIG. 8) provided on the operation lever 97 is engaged with the connection main body portion 96B.

  As shown in FIG. 4, the connecting portion 96 of the right slide member 90B is a flat plate having a flat upper surface at the same position in the vertical direction 7 as the upper surface of the connecting main body portion 96B without the switch cam portion 96A being provided. Configured.

<Operation lever 97 and feeding tray 20>
As shown in FIGS. 8 and 10, the operation lever 97 to which the slide members 90 </ b> A and 90 </ b> B are coupled includes a slide rod portion 97 </ b> A disposed along the front-rear direction 8 on both sides of the left-right direction 9, and both slide rod portions. And a connecting body 97B that connects the front portions of 97A. Each slide rod portion 97A is arranged along the upper part inside the side surface portions 14G and 14H (see FIG. 3) of the substrate support base 14B. The coupling body 97B is disposed along the left-right direction 9, and an operation portion 97C protruding to the front side is provided at the center of the left-right direction 9. Both the slide rod portions 97A and the connecting body 97B are integrally formed of resin.

  As shown in FIGS. 8 and 10, coupling portions 97 </ b> D projecting outward are respectively provided at the rear end portions of the slide rod portions 97 </ b> A on both the left and right sides. In addition, guide protrusions 97E protruding outward are provided at the front end portions of the outer surfaces of the slide rod portions 97A.

  As shown in FIG. 9, an engagement hole 14S is provided in the rear portion of the left side surface portion 14G of the substrate support base 14B. Although not shown, a similar engagement hole is provided in the right side surface portion 14H. In each of the engagement holes 14S, left and right coupling portions 97D (see FIG. 10) of the operation lever 97 are slidably penetrated. Each coupling portion 97D that has passed through the engagement hole 14S is coupled to a coupling main body portion 96B of a coupling portion 96 provided in the slide members 90A and 90B (see FIGS. 8 and 10). Therefore, when the operation lever 97 is slid along the engagement hole 14S, the slide members 90A and 90B coupled to the coupling portion 97D slide together in the front-rear direction 8.

  A guide hole 14T is provided in the front portion of the left side surface portion 14G. Although not shown, a similar guide hole is provided in the right side surface portion 14H. Guide protrusions 97E provided at the front end portions of the left and right slide rod portions 97A are slidably fitted in the guide holes 14T, respectively. Each guide hole 14T has a vertical portion along the vertical direction 7 at the front end portions of the left and right side surface portions 14G and 14H, and a portion that is gently inclined from the upper end portion of the vertical portion toward the rear obliquely upward. ing.

[Detection mechanism of first sensor 14M and second sensor 14N]
Each of the first sensor 14M and the second sensor 14N provided on the control board 14C is configured by a transmissive optical sensor in which a light emitting unit and a light receiving unit are arranged to face each other, and light emission by the light emitting unit. It is mounted on the control board 14C in a state where the direction is along the left-right direction 9 (see FIG. 3). As shown in FIG. 3, the first sensor 14M and the second sensor 14N detect the first detected body 17A and the second detected body 17B, respectively. 17 A of 1st to-be-detected bodies and the 2nd to-be-detected body 17B are the states which can be slid to the up-down direction 7, and are provided in the vicinity of the rear side edge of 14 C of control boards. As shown in FIGS. 8 and 10, each of the first detected body 17 </ b> A and the second detected body 17 </ b> B has a strip-like main body portion 17 </ b> D that extends linearly along the vertical direction 7. A detected portion 17E detected by the first sensor 14M and the second sensor 14N is provided at the upper end portion of each main body portion 17D (see FIG. 10).

  As shown in FIG. 10, each detected portion 17E includes a flat plate portion 17G protruding forward in the front-rear direction 8 on the upper side of each of the first sensor 14M and the second sensor 14N, and a first portion from the flat plate portion 17G. A projecting portion 17H projecting toward the detection region between the light emitting portion and the light receiving portion of each of the sensor 14M and the second sensor 14N is provided. The protruding portion 17H of the detected portion 17E is detected by the first sensor 14M and the second sensor 14N and slid upward when the first detected body 17A and the second detected body 17B are slid downward. Then, it will be in the state (non-detection state) which is not detected by the 1st sensor 14M and the 2nd sensor 14N.

  As shown in FIG. 9, each of the first detected body 17A and the second detected body 17B has a vertical direction 7 by a guide member 18 provided on the rear side portion of the left side surface portion 14G of the substrate support 14B. It is supported so that it can slide. The guide member 18 has a guide portion 18A for guiding the first detected body 17A and the second detected body 17B in the vertical direction 7 and the first detected body 17A and the second detected body 17B downward. And a support portion 18B that supports the coil spring 18C to be urged. The support portion 18B is disposed at the rear portion of the guide portion 18A. In FIG. 8 and FIG. 10, the guide portion 18A is omitted.

  As shown in FIG. 9, each of the coil springs 18 </ b> C is supported by the support portion 18 </ b> B in a state in which the coil spring 18 </ b> C can expand and contract along the vertical direction 7 on the rear side of the first detected body 17 </ b> A and the second detected body 17 </ b> B. Has been. The lower end portion of each coil spring 18C is supported by a spring seat (not shown) protruding rearward from the main body portion 17D of each of the first detected body 17A and the second detected body 17B. The support portion 18B is provided with a spring receiver 18E with which the upper end portion of each coil spring 18C is engaged. Each coil spring 18C is in a compressed state between the spring seats of the first detected body 17A and the second detected body 17B and the spring receiver 18E of the support portion 18B, and the first detected body 17A and the second detected body 17C. Each of the detected bodies 17B is urged downward.

  The lower end portion of the first detected body 17A is in contact with the switch cam portion 96A of the connecting portion 96 of the left slide member 90A, and the slide member 90A slides on the switch cam portion 96A by sliding in the front-rear direction 8. It touches and slides up and down 7 (see FIG. 7).

  As shown in FIG. 9, the lower end portion of the second detected body 17B is positioned below the lower end portion of the first detected body 17A, and the rotating member is located below the second detected body 17B. 19 is provided. The rotating member 19 includes a rotating shaft 19A disposed horizontally along the left-right direction 9 and a rotating portion 19B that rotates about the axis of the rotating shaft 19A. The rotation shaft 19A is supported by a left side structure 14D (see FIG. 3) in the base portion 14A on the lower side in front of the lower end portion of the second detected body 17B.

  The rotating portion 19B includes a cylindrical portion 19D that is rotatably fitted to the rotating shaft 19A, a lower arm portion 19E that extends downward from the cylindrical portion 19D, and a lower arm that extends from the cylindrical portion 19D. And an upper arm portion 19F extending upward from the portion 19E. The lower end portion of the second detected body 17B is in contact with the upper arm portion 19F by the biasing force of the coil spring 18C. The rotating member 19 rotates when the feeding tray 20 is slid in the front-rear direction 8 to slide the second detected body 17B in the up-down direction 7.

  As shown in FIGS. 8 and 10, an upright portion 23 is provided on the left side of the feeding tray 20. The upright portion 23 stands up from the flat plate portion 22 at a position on the left side of the support surface of the flat plate portion 22 on which the recording paper 12 is placed. The position where the upright portion 23 is provided is located outside the region where the left slide member 90A slides and corresponds to the lower side of the rear end portion of the left side surface portion 14G of the substrate support base 14B. . The upper surface of the standing portion 23 is a flat contact surface 23A.

<Sliding Position Detection Operation in Slide Member 90A>
The operation lever 97 is normally slid rearward, and the slide member 90A is in the first slide position. At the first slide position, each of the first conveyance roller pair 59, the second conveyance roller pair 44, and the reverse roller pair 45 constituting the second conveyance path 34 is in a state where the recording paper 12 can be conveyed. Yes. That is, the pinch roller 61 is in pressure contact with the first conveyance roller 60, the second conveyance roller 62 is in pressure contact with the counter roller 63, and the reverse roller 67 is in pressure contact with the reverse counter roller 68. Further, the platen 42 is in a horizontal state at a position close to the recording unit 24.

  In this case, in the first urging mechanism 94 and the second urging mechanism 95, the roller shaft 62A of the second transport roller 62 and the roller shaft of the reversing roller 67 are placed on the restriction portions 94F and 95F on the upper surfaces of the rotating members 94A and 95A. 67A is fitted. Thus, the roller shafts 62A and 67A do not slide in the front-rear direction 8, and the second transport roller 62 and the reverse roller 67 are stably in pressure contact with the counter roller 63 and the reverse counter roller 68.

  Further, in the switch cam portion 96A of the slide member 90A, the lower end portion of the first detected body 17A is in contact with the lowest third cam surface 96F, and the detected portion is detected by the first sensor 14M. 17E is detected.

  In this state, for example, when a jam occurs in the second transport path 34 or when printing is performed on a recording medium such as a CD instead of the recording paper 12, the second transport path 34 extends downward. Thus, the operation lever 97 is slid forward. Accordingly, as shown in FIG. 7B, in the first urging mechanism 94 and the second urging mechanism 95, the contact positions of the roller shafts 62A and 67A at the contact portions of the rotating members 94A and 95A are the same. Then, the restriction portions 94F and 95F change to the flat first regions 94G and 95G, and the roller shafts 62A and 67A slide backward on the first regions 94G and 95G. In this case, the second conveying roller 62 and the reverse roller 67 are kept in the pressure contact state with the counter roller 63 and the reverse counter roller 68 because the position in the vertical direction 7 hardly changes.

  Further, in the switch cam portion 96A, the position where the lower end portion of the first detected body 17A abuts changes from the third cam surface 96F to the second cam surface 96E which is inclined, and the first detected body. 17A gradually rises. In the first urging mechanism 94 and the second urging mechanism 95, while the roller shafts 62A and 67A are in contact with the first regions 94G and 95G of the rotating members 94A and 95A, the first detected body 17A. Is in contact with the first cam surface 96D. As a result, the detected portion 17E at the upper end of the first detected body 17A is not detected by the first sensor 14M.

  In such a state, it is determined that the nip of the recording paper 12 by each of the second conveyance roller pair 44 and the reversing roller pair 45 is quickly eliminated, and the recording paper 12 is transferred to the second conveyance path 34. Various controls such as stopping of a motor that is a driving source of the conveyance are started.

  In this state, when the slide members 90A and 90B are further slid forward, the first urging mechanism 94 and the second urging mechanism 95 are rotated as shown in FIG. 7C. The contact positions of the roller shafts 62A and 67A at the contact portions of 95A and 95A change from the flat first regions 94G and 95G to the inclined second regions 94H and 95H. As a result, the roller shafts 62A and 67A begin to descend gradually, and the second transport roller 62 and the reverse roller 67 begin to separate from the counter roller 63 and the reverse counter roller 68, respectively. In this case, in the switch cam portion 96A, the contact state between the lower end portion of the first detected body 17A and the first cam surface 96D is maintained.

  Thereafter, when the slide members 90A and 90B are further slid forward, the rotating members 94A and 95A are separated from the roller shafts 62A and 67A, and the roller shafts 62A and 67A are the first inclined surfaces provided on the slide member 90A. 92C is brought into sliding contact. Thereafter, the roller shafts 62A and 67A are in contact with the first flat surface 92B of the slide member 90A. When the slide member 90A reaches the slide position (second slide position) as described above, the second transport roller 62 and the reverse roller 67 are separated from each of the counter roller 63 and the reverse counter roller 68 by a predetermined distance (second state). )become.

  When the operation lever 97 is slid backward from the second slide position where the most forward slide operation is performed to the first slide position, the operation lever 97 is operated in the opposite direction. In this case, in the switch cam portion 96A, the position where the lower end portion of the first detected body 17A comes into contact with the first cam surface 96D, the second cam surface 96E, and the third cam surface 96F in order. Then, while the roller shaft 62A and the roller shaft 67A are in contact with the first regions 94G and 95G, the first sensor 14M detects the detected portion 17E of the first detected body 17A. Thereby, it is determined that the second conveyance roller 62 and the reverse roller 67 are in the first state where they are pressed against the counter roller 63 and the reverse counter roller 68, respectively, and predetermined control is started.

<Operation for Detecting Attachment / Removal of Feed Tray 20>
In a state where the feeding tray 20 is accommodated in the area surrounded by the base portion 14A, the feeding tray 20 is in a paper feeding position (first position) where the accommodated recording paper 12 can be supplied. . In this case, as shown in FIG. 8, the lower arm portion 19 </ b> E of the rotating member 19 is in contact with the contact surface 23 </ b> A of the upper surface of the standing portion 23 of the feeding tray 20. In such a state, the lower arm portion 19E of the rotation member 19 is in a position rotated upward about the rotation shaft 19A, and the upper arm portion 19F integrated with the lower arm portion 19E. Is also in the upper rotational position.

  In such a state, the second detected body 17B contacting the upper arm portion 19F is in the upper slide position, and the second sensor 14N detects the detected section 17E of the second detected body 17B. It is not detected. When the second sensor 14N is in such a non-detection state, the feeding tray 20 is mounted in the housing 14, and the recording paper 12 stored in the feeding tray 20 is fed to the feeding unit 16. Thus, it is determined that the paper feed position can be transported to the first transport path 33.

  In this state, when the feeding tray 20 is slid forward, the upright portion 23 also moves forward. Accordingly, the lower arm portion 19E of the rotation member 19 is separated from the contact surface 23A of the standing portion 23 and is rotated downward. Accordingly, the upper arm portion 19F integrated with the lower arm portion 19E is also rotated downward, and the second detected body 17B that is in contact with the upper arm portion 19F is slid downward. As a result, the second sensor 14N is in a state of detecting the detected portion 17E of the second detected body 17B. As a result, it is determined that the feeding tray 20 has reached a predetermined position (second position) away from the paper feeding position mounted in the housing 14 to the front side. When the feeding tray 20 is in the second position, the recording paper can be replenished into the feeding tray 20.

[Effect of the embodiment]
In the present embodiment, the pressure contact and separation of the second transport roller pair 44 and the pressure contact and separation of the reversing roller pair 45 can be stably determined by the first sensor 14M. Also, the attachment / detachment of the feeding tray 20 to / from the housing 14 can be reliably and stably detected by the second sensor 14N.

  Further, since the first sensor 14M and the second sensor 14N are mounted on the control board 14C, harnesses for transmitting and receiving power, signals, and the like are not required. Thereby, cost can be reduced. In addition, since the first sensor 14M and the second sensor 14N can be mounted using a relatively small space on the control board 14C, space efficiency can be improved. Since the first detected body 17A is guided by the guide member 18 provided on the substrate support base 14B, the detection accuracy by the first sensor 14M is further improved.

  Further, the first detected body 17A is moved by the guide member 18 in the up-down direction 7 which is a direction orthogonal to the front-rear direction 8 which is the sliding direction of the slide member 90A, thereby moving the first detected body 17A. Can be stabilized.

  Furthermore, the detected portion 17E of the first detected body 17A is provided at the upper end portion of the main body portion 17D having a shape along the vertical direction 7, and the lower end portion of the main body portion 17D is positioned below the control board 14C. Therefore, the space for arranging the first detected body 17A can be reduced.

  Further, at the contact portion of the first urging mechanism 94 in the slide member 90A, the flat first region 94G and the inclined second region 94H are made continuous so that the first detected body 17A due to the slide of the slide member 90A. Can move smoothly.

  Further, since the respective pressure contact states are detected based on the slide of the slide member 90A that performs the contact and separation of the first conveying roller pair 44 and the contact and separation of the reverse roller pair 45, the detection is performed. Accuracy is improved.

  In addition, if the second sensor 14N is configured to detect the paper feed position of the feed tray 20, it can be reliably detected that the feed tray 20 is at the paper feed position.

  Further, the second detected body 17B is guided by the guide member 18, so that the movement of the second detected body 17B is stabilized. Further, even if the moving direction of the second detected body 17B is the vertical direction 7 orthogonal to the moving direction of the feeding tray 20, the second detected body 17B is stably moved in the vertical direction 7 by the guide member 18. Can be made.

  Furthermore, since the second detected body 17B is slid by the rotating member 19 that is rotated by contact with the feeding tray 20 at the paper feeding position, the second detected body 17B has a simple configuration. Can do. Further, it can be surely detected by the second sensor 14N on the control board 14C that the feeding tray 20 is in the paper feeding position.

  Further, since the rotating member 19 is rotated by contact with the standing portion 23 of the feeding tray 20, there is no possibility that the rotating member 19 contacts the recording paper 12 in the feeding tray 20.

  Furthermore, since the guide member 18 is formed integrally with the substrate support base 14B, the manufacturing cost of the guide member 18 and the substrate support base 14B can be reduced.

[Modification]
In the embodiment described above, both the slide position of the slide member 90 </ b> A and the slide position of the feeding tray 20 are detected. However, any one of the slide positions may be detected. Further, the sliding direction of the sliding members 90A and 90B and the sliding direction of the feeding tray 20 are not limited to the front-rear direction 8, and may be a direction inclined with respect to the front-rear direction 8. Further, the first detected body 17A and the second detected body 17B are also configured to move in the vertical direction 7. However, the configuration is not limited to such a configuration, and the configuration is configured to move in a direction inclined with respect to the vertical direction 7. It may be. Further, the rotation member 19 may not be used to detect the slide position of the feeding tray 20. In this case, the lower end portion of the second detected body 17B is brought into direct contact with the feeding tray 20, and the second detected body 17B is moved between the detection position and the non-detection position by the slide of the feeding tray 20. It is set as the structure made to do.

14B ... Substrate support base 14M ... First sensor 14N ... Second sensor 34 ... Second transport path 62 ... Second transport roller 63 ... Opposite roller 67 ... .Reversing roller 90A ... sliding member

Claims (13)

A path constituting member that constitutes a part of the transport path and is movable to the first state and the second state;
A control board on which components for controlling the conveyance of the object to be conveyed in the conveyance path are mounted;
A support member for supporting the control board;
A slide member supported by the support member, and slidable to a first slide position where the path component member is in the first state and a second slide position where the path configuration member is in the second state;
A sensed body that is movable in conjunction with the slide of the slide member, and that moves from the detection position to the non-detection position as the slide member slides from the first slide position to the second slide position;
A sensor mounted on the control board for detecting the detected object at the detection position;
And a guide member that is provided on the support member and guides the movement of the detected object. The detected body is guided by the guide member and moves in the vertical direction.
The transport apparatus according to claim 1, wherein the slide member slides in a direction orthogonal to the vertical direction.   The body to be detected has a shape along the vertical direction, and a lower end portion is provided below the control board, and is provided at an upper portion of the main body portion. The transport apparatus according to claim 2, further comprising: a detected part to be detected. The slide member has a contact portion that comes into contact with the detected body at the first slide position,
The contact portion is continuous with a flat surface that contacts the lower end of the main body portion at the detection position, and a downstream side in the sliding direction from the first slide position to the second slide position with respect to the flat surface. The conveyance apparatus according to claim 3, further comprising an inclined surface that guides the detected object from the detection position toward the non-detection position toward the downstream side.   The path constituent member is a transport roller for transporting an object to be transported, and is capable of coming into contact with and separating from a facing roller disposed to face the transport roller, and in contact with the facing roller in the first state, The conveying device according to claim 1, wherein the conveying device is separated from the opposing roller in the second state. A receiving tray capable of storing an object to be conveyed and slidable in a first position and a second position;
A base for slidably supporting the storage tray;
A control board on which components for controlling the conveyance of the object to be conveyed in the conveyance path are mounted;
A support member supported on the base portion and supporting the control board on the upper side of the storage tray;
A body to be detected that is movable in conjunction with the slide of the storage tray, and the storage tray moves from the detection position to the non-detection position in accordance with the slide from the first position to the second position;
A sensor mounted on the control board for detecting the detected object at the detection position;
And a guide member that is provided on the support member and guides the movement of the detected object.   The said 1st position is a supply position where the to-be-conveyed object accommodated in the said storage tray is supplied to a conveyance path | route, and the said 2nd position is a predetermined position slid from the said supply position. Conveying device. The detected body is guided by the guide member and moves in the vertical direction.
The transport apparatus according to claim 6 or 7, wherein the storage tray slides in a direction orthogonal to the vertical direction. A rotation member that rotates by contact with the storage tray at the supply position;
The body to be detected has a shape along the vertical direction, and a lower end portion is provided below the control board, and is provided at an upper portion of the main body portion. A detected part to be detected,
9. The rotating member according to claim 8, wherein the rotating member is rotated by contact with the storage tray, and is in contact with a lower end portion of the main body of the detected body to move the detected body to the non-detection position. The conveying apparatus as described. The storage tray has a flat plate portion having a support surface for supporting the object to be conveyed, and an upright portion rising from the flat plate portion at a position outside the support surface,
The conveying device according to claim 9, wherein the rotating member is rotated by contact with the upright portion that moves with the slide of the storage tray. A path constituting member that constitutes a part of the transport path and is movable to the first state and the second state;
A receiving tray capable of storing an object to be conveyed and slidable in a first position and a second position;
A base for slidably supporting the storage tray;
A control board on which components for controlling the conveyance of the object to be conveyed in the conveyance path are mounted;
A support member supported on the base portion and supporting the control board on the upper side of the storage tray;
A slide member supported by the support member, and slidable to a first slide position where the path component member is in the first state and a second slide position where the path configuration member is in the second state;
A first object to be detected that is movable in conjunction with the slide of the slide member and moves from the detection position to the non-detection position as the slide member slides from the first slide position to the second slide position. When,
A second object to be detected that is movable in conjunction with the slide of the storage tray, and wherein the storage tray moves from the detection position to the non-detection position as the slide from the first position to the second position;
A first sensor mounted on the control board and detecting the first object to be detected at the detection position;
A second sensor mounted on the control board for detecting the second object to be detected at the detection position;
And a guide member that is provided on the support member and guides the movement of the first detection body and the second detection body.   The transport device according to claim 1, wherein the guide member is formed integrally with the support member. A conveying device according to any one of claims 1 to 12,
An image recording apparatus comprising: a recording unit that records an image on an object to be conveyed conveyed by the conveyance apparatus.

Images