JP2008207927A - Medium conveying device and medium processing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a check processing device provided with a mechanism capable of easily removing the check in such a state that it is clamped by a pair of conveying rollers. <P>SOLUTION: A check conveying passage 6 of the check processing device 1 turns into the opened state when opening/closing covers 3, 4 are opened, and a pair of third rollers 53 arranged at a front side of a magnetic head 84 of the check conveying passage 6, a separation roller 44 and a retard roller 45 arranged on the check feeding out passage 7 do not turn into the opened state. Since roller urging mechanisms 60, 70 for urging them are switched to the urging release state when the opening/closing cover 3 is opened, the check 5 remained in the clogged state between them can be easily taken out. When the opening/closing cover 3 is closed, it is reset to the urging state. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a medium conveying apparatus that conveys a sheet-like medium along a conveying path by a roller pair including a feed roller and a pressing roller, and can easily perform a recovery operation when the sheet-like medium is jammed in the conveying path. The present invention relates to the medium conveying apparatus.

  In general, a medium conveying apparatus for conveying a sheet-like medium such as a check or a recording sheet has a roller pair including a feed roller and a pressing roller arranged along a conveyance path, and the sheet-like medium is sequentially arranged on each roller pair. The structure of conveying while being delivered to is used. For example, as disclosed in Patent Documents 1 and 2, such a medium transport apparatus is used in a check processing apparatus that performs a check reading process.

In the check processing devices disclosed in these patent documents, an image scanner and a magnetic head are arranged along the conveyance path, and images and magnetic ink characters of checks and the like conveyed along the conveyance path are read, and the reading result Checks are sorted according to the situation.
US Patent Application Publication No. 2004/0257626 JP 2004-206362 A

  Here, when the sheet-like medium is jammed in the conveyance path, it is necessary to remove the sheet-like medium from the conveyance path. In order to be able to easily perform this operation, an opening / closing cover is attached to the apparatus body, a conveyance path is formed between them, and when the sheet-like medium is jammed, the opening / closing cover is opened. What is necessary is just to make a conveyance path open.

  The sheet-like medium jammed in the conveyance path is usually in a state of being sandwiched between a feed roller disposed along the conveyance path and a press roller pressed against the sheet. For this reason, the sheet-like medium jammed in the conveyance path cannot be easily removed. In order to solve this problem, if one roller is attached to the opening / closing cover side, the conveyance path can be completely opened, and the sheet-like medium sandwiched between the roller pair can be easily removed. It is.

  However, this makes it difficult to accurately position the roller disposed on the apparatus main body side and the roller disposed on the opening / closing cover side. That is, the position of the roller is likely to be shifted due to various factors such as a shift in the closing position of the opening / closing cover and an error in assembling the roller with respect to the opening / closing cover. When the rollers are displaced, the sheet-like medium is not properly conveyed by them. For example, in a check processing apparatus or the like, it is necessary to transport checks to the reading position by the magnetic head at a constant feed speed, and the relative positions of the feed roller and presser roller for feeding the checks to the reading position by the magnetic head are as follows: It is necessary to define with high accuracy.

  SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a medium conveying apparatus that suppresses the occurrence of positional deviation during conveyance and can easily remove a sheet-like medium sandwiched between a pair of rollers. Is to propose.

In order to solve the above-described problem, the medium conveying device of the present invention includes:
The device body;
An open / close cover attached to the main body of the apparatus so as to be openable and closable;
A sheet-like medium conveyance path;
A sheet-like medium is conveyed along this conveyance path, and a feed roller and a press roller arranged in the apparatus main body,
A biasing state in which the pressing roller is biased to the feed roller when the opening / closing cover is closed, and a roller biasing mechanism that releases the biasing state when the opening / closing cover is opened. It is a feature.

  In the present invention, the feed roller and the presser roller are arranged in the apparatus main body, and when the opening / closing cover is opened, the biasing state of the presser roller with respect to the feed roller by the roller biasing mechanism is released. Therefore, when the sheet-like medium is clogged between the feed roller and the pressing roller, when the opening / closing cover is opened, the state where the sheet-like medium is sandwiched between these rollers is released. Therefore, the sheet-like medium can be easily pulled out from between these rollers.

  Here, the roller urging mechanism includes a slide-type spring receiver, a coil spring disposed between the spring receiver and the roller shaft of the pressing roller, and a protrusion attached to the opening / closing cover, When the open / close cover is closed, a structure in which the spring receiver is pushed into the pressing roller by the protrusion and the coil spring is held in a compressed state can be adopted.

  The roller urging mechanism includes a pivoting lever, a coil spring spanned between one end of the lever and the roller shaft of the pressing roller, and a lever engaging portion attached to the opening / closing cover. When the open / close cover is closed, the lever can be rotated by the lever engaging portion to hold the coil spring in a tension state.

  Next, in the medium transport apparatus of the present invention, the transport path is formed between the first transport path portion formed in the apparatus body and the apparatus body and the opening / closing cover, and the opening / closing cover is opened. In the case where the second transport path portion that is opened is included, a first feed roller and a first pressing roller are disposed in the first transport path portion, and a second feed roller is disposed in the second transport path portion. And a second presser roller, the first roller urging mechanism urges the first presser roller to the first feed roller, and the second roller urging mechanism causes the second presser roller to move to the second feed roller. Can be energized.

  For example, when a sheet-like medium jammed in the conveyance path cannot be picked with a fingertip or the like, it is desirable that a part of such a conveyance path can be opened by an opening / closing cover. Further, when parts requiring maintenance such as a magnetic head and an image reading device (image scanner) are arranged along the conveyance path, such conveyance is performed for the maintenance work of these parts. It is desirable that the road portion can be opened by an opening / closing cover.

  Next, the medium conveying apparatus of the present invention is used in a medium processing apparatus that performs a predetermined process on a sheet-like medium conveyed along a conveying path, such as a check processing apparatus for processing checks. be able to. That is, the medium processing apparatus of the present invention is an information reading unit for reading information carried on a medium conveying apparatus having the above-described configuration and a sheet-like medium conveyed along the second conveying path portion of the medium conveying apparatus. And means.

  Here, the information reading means may be a magnetic head or an image reading device (image scanner) for reading magnetic information or image information carried on a sheet-like medium.

  The information reading unit includes a medium supply unit for supplying a sheet-like medium to be read to the conveyance path, and the first conveyance path portion receives the sheet-like medium fed from the medium supply unit. When the conveyance path portion is transferred to the two conveyance path portions, the first feed roller and the first presser roller are used to separate and convey the sheet-like medium conveyed on the first conveyance path portion. It can be a roller and a retard roller.

  In the present invention, one of the feed roller and presser roller for transporting the sheet-like medium is not mounted on the opening / closing cover, but is disposed on the apparatus main body side, thereby avoiding the occurrence of misalignment of the sheet. The medium is always properly transported. When the sheet-like medium is jammed between these rollers, when the opening / closing cover is opened, the pressing roller urging state by the roller urging mechanism is released in conjunction therewith. Therefore, the sheet-like medium jammed in the conveyance path is released from the state sandwiched between the feeding roller and the pressing roller, and can be easily taken out between these rollers. Therefore, the recovery operation when the sheet-like medium is jammed in the conveyance path can be performed easily and efficiently.

  Hereinafter, an embodiment of a check processing apparatus to which the present invention is applied will be described with reference to the drawings.

(overall structure)
FIG. 1 is an external perspective view of a check processing apparatus according to the present embodiment, and FIG. 2 is a plan view thereof. The check processing apparatus 1 includes a main body case 2 on the apparatus main body side and left and right opening / closing covers 3 and 4. A check conveyance path 6 (second conveyance path portion) for conveying the check 5 is formed between the main body case 2 and the opening / closing covers 3 and 4. The check conveyance path 6 of the present example is defined by a narrow vertical groove extending in a substantially U-shape when viewed from above. The upstream end of the check transport path 6 in the check transport direction is connected to a check supply section 8 formed of a wide vertical groove via a check delivery path 7 (first transport path portion) formed of a narrow vertical groove. The downstream end of the check conveyance path 5 passes through left and right branch passages 9 and 10 consisting of narrow vertical grooves branching left and right, and first and second check discharge sections 11 consisting of left and right wide vertical grooves. , 12.

  The check 5 has a magnetic ink character string 5 </ b> A printed in the long side direction at the lower end portion of the surface 5 a thereof. In addition, on the front surface 5a, an amount, a payer, a number, a signature, and the like are written on a background of a predetermined pattern, and a back-end column and the like are provided on the back surface 5b. The check 5 is inserted into the check supply unit 8 so that the vertical direction is aligned and the surface 5 a faces the outside of the U-shaped check conveyance path 6.

  The check 5 sent from the check supply unit 8 through the check delivery path 7 is conveyed along the check conveyance path 6 while being printed on the front surface 5a of the magnetic ink character string 5A, its front image and back image. Is read. The check 5 in which these pieces of information are normally read is distributed to the first check discharge unit 11 after being printed on the front side, and is discharged to the first check discharge unit 11. In this case, the second check discharge unit 12 sorts and discharges the prints to the second check discharge unit 12 without performing the surface printing.

  FIG. 3 is an external perspective view showing the check processing device 1 in a state in which the opening / closing covers 3 and 4 are opened and the check transport path 6 is opened, and FIG. 4 is a plan view thereof. Referring to these figures as well, the main body case 2 includes a central case portion 22 having a contoured vertical outer peripheral side portion 21 along the U-shaped check conveyance path 6, and left and right side case portions. 23, and a partition case portion 25 disposed between the central case portion 22 and the side case portion 24. A check supply unit 8 is formed between the central case portion 22 and the side case portion 23. The central case portion 22 and the other side case portion 24 are divided into left and right by a partition case portion 25 to form check discharge portions 11 and 12.

  The outer peripheral side surface portion 21 of the central case portion 22 that protrudes from the left and right side case portions 23 and 24 is covered by the open / close covers 3 and 4 from the left and right. The opening / closing cover 3 is disposed on the side case portion 23 side, and the opening / closing cover 4 is disposed on the side case portion 24 side. An upstream conveyance path portion 6 a in the check conveyance path 6 is formed between the central case portion 22 and the opening / closing cover 3, and a downstream conveyance path in the check conveyance path 6 is formed between the central case portion 22 and the opening / closing cover 4. A portion 6b is formed.

  The distal end portion 3a of the opening / closing cover 3 and the distal end portion 4a of the opening / closing cover 4 are attached to the support shaft 26 so as to be opened and closed left and right about a vertical support shaft 26 disposed on the body case 2 side. ing. In this example, the support shaft 26 is disposed at a portion substantially corresponding to the intermediate point in the transport direction in the check transport path 6 that is curved in a U-shape.

  The open / close cover 3 and the open / close cover 4 are locked in their closed positions by separate locking mechanisms. The locking mechanism of the opening / closing cover 3 includes a cover side engaging protrusion 31 formed on the rear end face 3b of the opening / closing cover 3 and an engaging protrusion attached to the end face 23a facing the rear end face 3b of the side case portion 23 so as to be able to advance and retract. 32. The engaging protrusion 32 is urged in the protruding direction by a spring force (not shown). A slide button 33 for unlocking is attached to the outer side surface portion of the side case portion 23.

  When the slide button 33 is slid against the spring force, the engagement protrusion 32 is disengaged from the cover side engagement protrusion 31, and the opening / closing cover 3 can be opened laterally about the support shaft 26. When the open / close cover 3 is closed, the open / close cover 3 moves while pushing the engaging protrusion 32 by the corner of the cover side engaging protrusion 31 protruding from the rear end surface 3b. When moved to the closed position, the engagement protrusion 32 engages with the cover side engagement protrusion 31 and returns to the locked state. The other opening / closing cover 4 is also provided with a similar locking mechanism (cover-side engaging protrusion 141, engaging protrusion 142) and a lock release slide button 143.

(Internal structure)
FIG. 5 is an explanatory diagram showing the internal mechanism of the check processing device 1 with a transport system as the center. The check supply unit 8 is provided with a feed roller 41 and a pressing member 42 for pressing the check 5 against the feed roller in order to send the check 5 to the check transport path 6 through the check feed path 7. ing. Further, the separation pad 43, the separation roller 44, and the separation roller 44 are pressed to separate the check 5 sent to the check delivery path 7 by the feeding roller 41 one by one and send it to the check conveyance path 6. The retard roller 45 is provided. The feeding roller 41 and the separation roller 44 are rotationally driven by a common feeding motor 46.

  In the check conveyance path 6, first to sixth roller pairs 51 to 56 for conveying the check 5 along the check conveyance path 6 and a conveyance motor 57 for rotationally driving them are arranged. . The rotation of the conveyance motor 57 is transmitted to each of the roller pairs 51 to 56 via the endless belt 58. The first to sixth roller pairs 51 to 56 respectively include the first to sixth transport rollers 51a to 56a and the first to sixth pressers that are rotated by the first to sixth transport rollers 51a to 56a. Rollers 51b to 56b. The first to fourth roller pairs 51 to 54 are disposed along the upstream conveyance path portion 6a, and the fifth and sixth roller pairs 55 and 56 are disposed along the downstream conveyance path portion 6b. .

  Between the first roller pair 51 and the second roller pair 52 in the upstream transport path portion 6 a, a magnet 81 for magnetizing magnetic ink characters is disposed, and between the second roller pair 52 and the third roller pair 53. Are arranged with a front-side contact image scanner 82 for reading the front image of the check 5 and a back-side contact image scanner 83 for reading the back-side image. A magnetic head 84 for reading magnetic ink characters is disposed between the third roller pair 53 and the fourth roller pair 54, and a pressing member 85 for pressing the check 5 against the magnetic head 84. Are confronting each other. The magnetic head 84 and the pressing member 85 may have a reverse positional relationship via the upstream side conveyance path portion 6a.

  A printing mechanism 86 is arranged on the downstream side of the sixth roller pair 56 in the downstream side conveyance path portion 5b. The printing mechanism 86 includes a stamp that can be moved by a driving motor (not shown) between a printing position pressed by the check 5 and printing on the surface thereof and a standby position retracted from the printing position. A switching plate 87 that is switched by a drive motor (not shown) is disposed at the downstream end of the downstream conveyance path portion 5b. The switching plate 87 selectively switches the downstream end of the check conveyance path 6 with respect to the first and second check discharge sections 11 and 12 and guides the check 5 to the selected one of the check discharge sections 11 and 12.

(Opening / closing cover and roller urging mechanism)
FIG. 6 is a schematic perspective view showing the check processing device 1 with the opening / closing cover 3 removed, and FIG. 7 is a perspective view showing the inner surface of the opening / closing cover 3 removed. Referring to FIGS. 3, 4, 6, and 7, the opening / closing cover 3 includes a front-side contact image scanner 82, first and second pressing rollers 51 b and 52 b, and a fourth pressing roller 54 b mounted on the opening / closing cover 3. Has been. The magnetic head 84 and the pressing member 85 are disposed on the apparatus main body side, and a third roller pair 53 for feeding the check 5 to the reading position of the magnetic head 84 is also disposed on the apparatus main body side. On the other hand, the opening / closing cover 4 is equipped with fifth and sixth pressing rollers 55b and 56b.

  Therefore, when the opening / closing cover 3 is opened, the upstream conveyance path portion 6a is opened, and the reading surfaces 82a and 83a of the front-side contact image scanner 82 and the back-side contact image scanner 83 are exposed. Further, the magnetic head 84 attached to the apparatus main body side is exposed. Similarly, when the opening / closing cover 4 is opened, the downstream conveyance path portion 6b is opened, and the printing mechanism 86 attached to the apparatus main body is exposed. The opening / closing cover 3 is provided with a pressing roller 59a at a portion facing the back-side contact image scanner 83 on the apparatus main body side, and the front-side contact image mounted on the opening / closing cover 3 is disposed on the apparatus main body side. A presser roller 59b is disposed at a portion facing the scanner 82.

  Here, in the check processing device 1, when the opening / closing cover 3 is opened, the urging of the retard roller 45 with respect to the separation roller 44 and the urging of the third pressing roller 53 b with respect to the third transport roller 53 a are interlocked with the opening / closing cover 3. A roller urging mechanism for releasing each is provided.

  FIG. 8 is an explanatory view showing a roller urging mechanism urging the retard roller, and FIG. 9 is an explanatory view showing a roller urging mechanism urging the third presser roller. First, a roller urging mechanism (first roller urging mechanism) that urges the retard roller 45 will be described with reference to FIGS. 6, 7, and 8.

  The roller urging mechanism 60 includes a horizontal lever 61 attached to a portion of the bottom side of the side case portion 23 of the main body case 2 so as to be able to turn in the horizontal direction, and a roller shaft of the horizontal lever 61 and the retard roller 45. A tension coil spring 63 is provided between the lower end portions of 62. The horizontal lever 61 has an open position 61A in which the distal end side arm portion 61a protrudes from the lower end portion of the end surface 23a of the side case portion 23, and a pushing position 61B in which the distal end side arm portion 61a is pushed into the end surface 23a. It is possible to turn around the turning shaft 61b. A spring hook 61 d for hooking one end of the tension coil spring 63 is formed on the end of the rear arm portion 61 c of the horizontal lever 61. When the horizontal lever 61 reaches the pushing position 61B, the tension coil spring 63 spanned between the spring hook 61d and the roller shaft 62 of the retard roller 45 enters a tension state along the direction passing through the center of the separation roller 44. .

  Here, a contact plate 64 for pushing the front end side arm portion 61a of the horizontal lever 61 is attached to the lower end portion of the open / close cover 3 on the rear end face 3b side. When the opening / closing cover 3 is closed, as shown by an imaginary line in FIG. 8, the horizontal lever 61 is pushed into the pushing position 61B by the contact plate 64. As a result, the retard roller 45 is pressed (biased) against the separation roller 44 by a predetermined spring force. When the opening / closing cover 3 is opened, the horizontal lever 61 is pulled back to the open position 61A by being pulled by the tension coil spring 63, and the state is switched to a state where the bias of the tension coil spring 63 against the retard roller 45 is released (bias release state).

  Next, a roller urging mechanism (second roller urging mechanism) that urges the third pressing roller 53b to the third transport roller 53a will be described with reference to FIGS. The roller urging mechanism 70 supports the roller shaft 71 of the third presser roller 53b attached to the apparatus main body side in a state in which the roller shaft 71 can be slightly slid in a direction approaching and separating from the third transport roller 53a. The support member 72 is provided. The support member 72 has a box shape including upper and lower end plate portions 72a and 72b, and left and right side plate portions 72c and 72d and a front plate portion 72e. Upper and lower shaft end portions of the roller shaft 71 are rotatably and slidably supported by the upper and lower end plate portions 72a and 72b.

  A cylindrical projection 72f protruding forward is formed on the front plate portion 72e of the support member 72. Inside this, a cylindrical spring receiver 73 whose tip is sealed while being slidable in the front-rear direction (direction approaching and separating from the roller shaft 71) is supported in a horizontal state (a state orthogonal to the roller shaft 71). ing. A compression coil spring 74 is mounted between the spring receiver 73 and a central portion of the roller shaft 71 in the axial direction. As shown by a solid line in FIG. 9, the sliding spring receiver 73 is moved from the open position 73 </ b> A where the tip protrudes forward from the front plate portion 72 e of the support member 72 to the push position 73 </ b> B pushed into the roller shaft 71. Can be pushed in.

  On the opening / closing cover 3 side, as shown in FIG. 7, a protrusion 75 is formed that can push the tip end surface of the spring receiver 73 when the opening / closing cover 3 is closed. When the open / close cover 3 is closed, the spring receiver 73 is pushed in by the protrusion 75, and reaches the push-in position 73B indicated by an imaginary line in FIG. When the spring receiver 73 is pushed to the pushing position 73B, the compression coil spring 74 is compressed, and the third pressing roller 53b is urged by the spring force of the compression coil spring 74 to the third conveying roller 53a with a predetermined urging force. (Energized state) is formed. When the opening / closing cover 3 is opened, the protrusion 75 moves away, and the spring receiver 73 is returned to the front open position 73A by the compression coil spring 74, and the state is switched to the state where the bias is released (the bias release state).

(Removal of jammed check)
In the check processing apparatus 1 configured as described above, when the check 5 is jammed in the check conveyance path 6, the left and right open / close covers 3, 4 are attached to the support shaft 26 by operating the left and right slide buttons 33, 143. Open left and right as the center. When the lock mechanism of the opening and closing covers 3 and 4 is released, the opening and closing covers 3 and 4 are pressed by the pressing force of the first to sixth pressing rollers 51b to 56b pressed against the first to sixth transport rollers 51a to 56a. The covers 3 and 4 are opened. When these open / close covers 3 and 4 are opened, the check conveyance path 6 is opened as shown in FIGS. At this time, the upstream conveyance path portion 6a is opened, and the reading surfaces 82a and 83a of the front-side contact image scanner 82 and the back-side contact image scanner 83 are exposed. Therefore, the check 5 jammed in the check conveyance path 6 can be easily taken out.

  Here, even if the open / close covers 3 and 4 are opened, the third roller pair 53 for feeding the check 5 into the magnetic head 84 is not opened. However, as described above, when the opening / closing cover 3 is opened, the roller urging mechanism 70 that presses the third pressing roller 53a against the third conveying roller 53b is switched to the urging release state. Therefore, even when the check 5 is located between the third roller pair 53, the check 5 can be easily removed from between these.

  Further, the third roller pair 53, the separation roller 44, and the retard roller 45 are not mounted on the opening / closing cover 3, but are arranged in the central case portion 22, thereby avoiding the occurrence of misalignment of the check and the check. 5 can always be carried out appropriately.

  In addition, the roller urging mechanism 60 that urges the retard roller 45 disposed in the check delivery path 7 that is not opened even when the opening and closing covers 3 and 4 are opened is also switched to the urging release state. Therefore, even if the check 5 is located between the separation roller 44 and the retard roller 45, the check 5 can be easily removed from between these.

  In the maintenance work such as cleaning of the magnetic head 84, the front-side contact image scanner 82, the back-side contact image scanner 83, and the printing mechanism 86, and replacement of consumables, the opening and closing covers 3 and 4 are similarly opened to perform the maintenance work. It can be carried out.

(Other embodiments)
Note that the present invention is also applicable to a medium transport apparatus that transports sheet-like media other than checks such as checks, bills, and bills. Of course, it can also be used as a medium transport device of a medium processing device such as a printer or a scanner other than the check processing device.

1 is an external perspective view of a check processing apparatus to which the present invention is applied. It is a top view of a check processing device. It is an external appearance perspective view of a check processing device in a state where an opening / closing cover is opened. It is a top view of the check processing device in a state where the opening / closing cover is opened. It is explanatory drawing which shows the internal structure of a check processing apparatus. It is a perspective view of a check processing device in the state where one open / close cover was removed. It is a perspective view which shows the opening / closing cover removed from the check processing apparatus. It is explanatory drawing which shows the roller urging | biasing mechanism of a retard roller. It is explanatory drawing which shows the roller urging | biasing mechanism of a 3rd presser roller.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Check processing apparatus, 2 Main body case, 3, 4 Opening / closing cover, 3a, 4a tip part, 3b rear end surface, 5 check, 5A Magnetic ink character string, 5a surface, 5b back surface, 6 check conveyance path, 6a Upstream conveyance path Part, 6b downstream conveyance path part, 7 check delivery path, 8 check supply part, 9, 10 branch path, 11 first check discharge part, 12 second check discharge part, 21 outer peripheral side part, 22 central case part, 23 , 24 Side case part, 23a Front end surface, 25 Partition case part, 26 Support shaft, 31, 41 Cover side engaging protrusion, 32, 42 Engaging protrusion, 33, 143 Slide button, 41 Feeding roller, 42 Pressing member , 43 Separation pad, 44 Separation roller, 45 Retard roller, 46 Sending motor, 51-56 First to sixth roller pairs, 5 1a to 56a 1st to 6th transport rollers, 51b to 56b 1st to 6th press rollers, 57 transport motor, 58 endless belt, 60 roller urging mechanism, 61 horizontal lever, 61A opening position, 61B pushing position, 61a Front end side arm portion, 61b Rotating shaft, 61c Rear end side arm portion, 61d Spring hook, 62 Roller shaft, 63 Tension coil spring, 64 Contact plate, 70 Roller biasing mechanism, 71 Roller shaft, 72 Support member, 73 Spring Receiving, 74 compression coil spring, 75 protrusion, 81 magnet, 82 surface side contact image scanner, 83 back surface side contact image scanner, 84 magnetic head, 85 pressing member, 86 printing mechanism, 87 switching plate

Claims (8)

The device body;
An open / close cover attached to the main body of the apparatus so as to be openable and closable;
A sheet-like medium conveyance path;
A sheet-like medium is conveyed along this conveyance path, and a feed roller and a press roller arranged in the apparatus main body,
A biasing state in which the pressing roller is biased to the feed roller when the opening / closing cover is closed, and a roller biasing mechanism that releases the biasing state when the opening / closing cover is opened. A medium conveying apparatus. The roller urging mechanism is
A sliding spring support,
A coil spring disposed between the spring receiver and the roller shaft of the pressing roller;
And a protrusion attached to the opening / closing cover,
2. The medium conveying apparatus according to claim 1, wherein when the opening / closing cover is closed, the spring receiver is pushed toward the pressing roller by the protrusion, and the coil spring is held in a compressed state. The roller urging mechanism is
A swivel lever,
A coil spring spanned between one end of this lever and the roller shaft of the presser roller;
A lever engaging portion attached to the opening and closing cover,
The medium conveying apparatus according to claim 1, wherein when the opening / closing cover is closed, the lever is rotated by the lever engaging portion and the coil spring is held in a tension state. The transport path includes a first transport path portion formed in the apparatus main body, a second transport path portion formed between the apparatus main body and the open / close cover, and opened when the open / close cover is opened. Is included,
The feed roller and the press roller include a first feed roller and a first press roller disposed in the first transport path portion, a second feed roller and a second transport roller disposed in the second transport path portion, respectively. A presser roller and
As the roller urging mechanism, a first roller urging mechanism for urging the first pressing roller to the first feeding roller, and a first roller for urging the second pressing roller to the second feeding roller. The medium conveying apparatus according to any one of claims 1 to 3, wherein a two-roller urging mechanism is disposed. A medium conveying device according to claim 4;
A medium processing apparatus comprising: information reading means for reading information carried on a sheet-like medium conveyed along the second conveying path portion of the medium conveying apparatus.   6. The medium processing apparatus according to claim 5, wherein the information reading means is a magnetic head for reading magnetic information carried on a sheet-like medium.   6. The medium processing apparatus according to claim 5, wherein the information reading unit is an image reading apparatus for reading image information carried on a sheet-like medium. A medium supply unit for supplying the sheet-like medium to be read by the information reading unit to the conveyance path;
The first conveyance path part is a conveyance path part that delivers the sheet-like medium sent out from the medium supply unit to the second conveyance path part,
The first feed roller and the first presser roller are a feed roller and a retard roller for separating and transporting the sheet-like medium transported through the first transport path portion. 8. The medium processing apparatus according to any one of items 7.

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