JP3746984B2 - Medium transport device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a medium transport apparatus, and more particularly to a medium transport apparatus including a medium skew correction mechanism.
[0002]
[Prior art]
For example, as disclosed in Japanese Patent Application Laid-Open No. 2000-281234, a medium conveyance device having a conventional medium skew correction mechanism has a right side or a slip for each stage for a passbook and a slip for an inserter unit that accepts a medium. The medium is brought into close contact with the reference surface provided on the left side and aligned. As a result, when the medium is a passbook or the like, it may cause an error if the medium is inclined when reading or writing the magnetic stripe (hereinafter referred to as MS tape), or it may be set obliquely. When printing is performed while the medium is conveyed as it is, characters such as characters are printed obliquely, and problems such as printing out of a predetermined range are prevented.
[0003]
[Problems to be solved by the invention]
The first problem of this conventional medium conveying apparatus is that it is impossible to reduce the size of the apparatus.
[0004]
The reason is that the conventional skew correction mechanism employs a roller for correcting the skew that moves the medium perpendicular to the transport direction and moves to the abutment side, so a pinch roller is required to face the skew correction roller. In addition, since a lifting / lowering means for retracting the pinch roller from the conveyance path during the conveyance of the medium is required, the skew correction mechanism is large. For this reason, it is necessary to mount the MSR / W unit and the skew correction mechanism side by side in the transport direction in the inserter section.
[0005]
The second problem is that the skew correction reliability cannot be sufficiently secured when the medium is moved to the abutting side by the skew correction roller.
[0006]
The reason is that the pressure roller facing the feed roller that transports the medium is retracted from the transport path during skew correction, but the feed roller always projects into the transport path, so the medium is moved when moving the medium to the abutment side. This is because there is a case where is caught on the feed roller.
[0007]
An object of the present invention is to improve the reliability of medium skew correction.
[0008]
Another object is to simplify the medium skew correction mechanism.
[0009]
Another object is to reduce the size and weight of the medium transport device.
[0010]
[Means for Solving the Problems]
The medium conveying apparatus of the present invention includes a guide for guiding one side of a print medium to be conveyed, a conveyance mechanism unit for conveying the print medium, and an abutting where one side of the print medium is abutted so as to align the angles of the print medium. A surface, an impeller that rotates the blade portion in contact with the print medium and moves the print medium along the guide to abut the abutment surface, and a rib provided at a position facing the impeller of the guide. is doing.
[0011]
The transport mechanism includes a second guide facing the guide, and a feed roller whose roller surface protrudes from the second guide and transports in contact with the print medium. The feed roller of the second guide A rib having a height substantially the same as the height at which the feed roller protrudes is provided on the side portion.
[0012]
According to the present invention, the blade portion is rotated by contact with the print medium by the impeller, the print medium is moved along the guide so as to abut against the abutting surface, and the rib is provided at a position facing the impeller of the guide. This eliminates the need for lifting and lowering means for retracting the pinch roller or the like from the conveyance path during medium conveyance, and the skew correction mechanism is small, and the MSR / W unit and the skew correction mechanism are substantially the same in the conveyance direction in the inserter section. Can be implemented in position.
[0013]
Further, in the case where the transport mechanism has a second guide facing the guide and a feed roller whose roller surface protrudes from the second guide and transports in contact with the print medium, the feed roller of the second guide By providing ribs with almost the same height as the feed roller protrudes on the side, the edge of the media part smoothly exceeds the feed roller along the ribs. Therefore, sufficient reliability of skew correction can be secured.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings.
As shown in FIG. 1, the medium transport apparatus of the present invention includes a passbook inserter mechanism 1 that inserts a passbook as a medium 38, a slip inserter mechanism 2 that inserts a slip as a medium 38, a passbook inserter mechanism 1, and a slip. A gate 9 that switches conveyance of the medium 38 and a printing mechanism unit 3 that performs printing on the medium 38 are provided at a portion where each conveyance path of the inserter mechanism unit 2 joins.
[0015]
The passbook inserter mechanism 1 includes an upper conveyance guide 4 and a lower conveyance guide 5 provided above and below a conveyance path through which the medium 38 is conveyed, a conveyance motor 6 for conveying the medium 38, and a feed driven by the conveyance motor 6. A pinch roller 8 disposed opposite to the feed roller 7 so as to convey the medium 38 between the roller 7 and the feed roller 7 and affixed to a predetermined position on the lower surface of the medium 38 to be conveyed. An MSR / W unit 10 that records information on the MS tape and reads the recorded information, and a skew correction mechanism that corrects the skew of the medium 38 so that the MS tape passes above the MSR / W unit 10. And.
[0016]
The MSR / W unit 10 contacts the MS tape to read the information on the MS tape, writes the information on the MS tape, and the solenoid 11 moves the MS head 12 up and down so as to protrude and retract on the transport path. Is provided.
[0017]
The MS head 12 is installed below the axis of the feed roller 7, and a backup roller for backing up the upper surface of the medium 38 at the time of reading / writing is provided on the axis of the feed roller 7 at a position facing the MS head 12. Is provided.
[0018]
The skew correction mechanism is arranged to face the feed roller 7 and the feed roller 7 driven by the conveyance motor 6, and is driven and rotated by the pinch roller 8 that moves up and down to project and retract in the conveyance path, and the conveyance motor 6. And a cam mechanism 15 that performs an up / down operation of the pinch roller 8 and an operation of turning on / off the driving of the impeller 13 by the conveyance motor 6.
[0019]
The cam mechanism section 15 is connected to a camshaft 17 to which the drive of the inserter motor 14 is connected, a cam 18 for controlling the vertical movement of the pinch roller 8, and a cam 19 for controlling ON / OFF of the connection between the conveyance motor 6 and the impeller 13. Rotating force is transmitted from the shaft of the conveyance motor 6 to the shaft of the impeller 13 and the cam 19, while holding the pinch roller 8 rotatably and following the cam 18 to move the pinch roller 8 up and down. And a gear mechanism for turning on / off the transmission of the rotational force.
[0020]
The pinch roller bracket 20 is supported so as to be rotatable about a shaft 37, for example, in a direction in which the pinch roller 8 comes into contact with the feed roller, and an end of the pinch roller bracket 20 opposite to the pinch roller 8 is connected to the cam 18. In the abutting direction, the spring 21 is urged so as to rotate counterclockwise in FIG. Accordingly, the pinch roller 8 is moved up and down by being driven by the inserter motor 14 and rotating the cam 18.
[0021]
For example, the gear mechanism is configured such that a gear 25 is fixed to a shaft 24 parallel to the shaft of the feed roller 7 driven by the conveyance motor 6, and the gear 25 is rotated by an arm 26 that is rotatably supported by the shaft 24. The gear 27 is meshed with the gear 27 so that the gear 27 can rotate around the gear 25, and a gear 23, which is a bevel gear, is attached to the shaft 24. A gear 22 which is a bevel gear is attached to a rotation shaft 39 of the impeller 13, and the gears 22 and 23 are engaged with each other so that the shaft 39 rotates together with the shaft 24. The arm 26 is centered on the shaft 24 in a direction in which the gear 27 comes into contact with a gear 29 attached to the shaft of the feed roller 7 and in a direction in which the tip of the arm 26 opposite to the gear 27 is pressed against the cam 19. 1 is urged by a spring 28 to rotate clockwise in FIG.
[0022]
Accordingly, when the cam 19 is rotated by being driven by the inserter motor 14, the arm 26 is swung so that the gear 27 and the gear 29 are brought into contact with and separated from each other, and the drive of the gear 27 is turned on / off. 6 and the impeller 13 are turned ON / OFF.
[0023]
Further, as shown in FIG. 2, the lower conveyance guide 5 is provided with a medium abutting surface 30 for abutting the medium by the skew correction operation, and the MS head 12 moves upward and projects into the conveyance path. Holes are formed. The MSR / W unit 10 employs a medium transport system, and the MS head 12 is not moved in the transport direction of the medium 38, but the MS head 12 is moved up and down to move the medium 38 in the transport direction to read / write the MS tape. Light up. Accordingly, the hole of the MS head 12 formed in the lower transport guide 5 may be a size necessary for the MS head 12 to move up and down, and can be set to a minimum size.
[0024]
As a result, the hole of the MS head is smaller than that in which the medium is temporarily held and the MS head is moved in the transport direction to perform reading and writing. Therefore, when the medium moves to the medium abutting surface 30, It is possible to correct the skew without fail.
[0025]
Further, as shown in FIG. 3, the conveyance path of the passbook inserter mechanism unit 1 is set with the sensors 31 and 32 that detect that the medium hits the medium abutting surface 30, and the medium is set in the passbook inserter mechanism unit 1. The sensor 33 and the sensor 34 for detecting this are provided.
[0026]
As shown in FIG. 3, the sensors 33 and 34 are installed on the rear side in the transport direction of the impeller 13 and on the front side in the transport direction, respectively. When both sensors detect the medium, it is detected that the medium has been inserted at a position where the width can be adjusted. As a result, when the impeller 13 rotates, it can be brought into contact with the medium 38, and only the front end of the medium 38 can be prevented from being brought to the abutting portion 30. The sensor 34 provided on the back side in the transport direction of the impeller 13 is provided on the back side in the transport direction from the feed roller 7. Thereby, the sensor 34 can also detect that the medium has passed the feed roller 7 and the MS head 12.
[0027]
If no medium having a width extremely smaller than the width of the conveyance path is inserted, the sensor for detecting that the medium is set in the passbook inserter mechanism unit 1 may be one on the back side in the conveyance direction. .
[0028]
Further, as shown in FIG. 3, the sensors 31 and 32 are provided in the vicinity of the medium abutting surface 30. When both sensors detect the medium, it is detected that the medium has hit the abutting surface.
[0029]
Further, as shown in FIGS. 4, 5, and 6, the upper conveyance guide 4 includes a convex rib 35 on the side of the feed roller 7 opposite to the medium abutting surface 30. As a result, during the skew correction operation, the medium 38 is moved toward the medium abutting surface 30 without being caught by the feed roller 7. The height of the rib 35 may be substantially the same as the amount of protrusion of the feed roller 7 into the conveyance path. However, the medium 38 is more likely to be rib 35 during conveyance when the feed roller 7 slightly protrudes from the rib 35. This is desirable because it reduces the load during conveyance without touching.
[0030]
As shown in FIG. 4, the impeller 13 is an impeller having two elastic rubber blades, for example. Further, a sensor 16 that detects the rotational phase of the impeller 13 so as to stop the rotation at a position that does not protrude into the conveyance path so that the impeller 13 does not interfere with the conveyance of the print medium during medium conveyance. Prepare. For example, a slit is provided on the rotating shaft 39 of the impeller 13, and the sensor 16 includes a light emitting unit and a light receiving unit with the rotating shaft 39 interposed therebetween. When it is detected that the medium 38 has hit the medium abutting surface 30 and the sensor 16 detects light transmission, the inserter motor 14 is driven to rotate the cam mechanism section 15, and the impeller 13 is driven by the transport motor 6. As shown in FIG. 6, the vane of the impeller 13 is stopped at a retracted position so as not to get caught in the medium 38 conveyed through the conveyance path. With this configuration, it is possible to configure a correction mechanism capable of retracting the blade portion from the transport while being thin, unlike a device having a large number of blade portions.
[0031]
Further, as shown in FIGS. 4, 5 and 6, a convex rib 36 is formed at a position facing the impeller 13 of the lower conveyance guide 5. As a result, the entire lower surface of the medium 38 does not come into contact with the surface of the lower conveyance guide 5, so that the frictional load on the lower surface of the medium 38 during skew correction can be reduced. Further, by disposing the impeller 13 near the pinch roller 8 and the MS head 12, it is possible to prevent the end of the medium 38 from being lifted by the rib 36 and catching on the pinch roller 8 and the MS head 12 protruding hole. Furthermore, the reliability of skew correction can be improved.
[0032]
The height of the rib 36 is such that the blade portion of the impeller 13 is at the lowest point, and the blade portion has a certain amount of deflection on the upper surface of the rib 36 of the lower conveyance guide 5. . In addition, even when the medium 38 continues to turn the impeller 13 in a state where the medium abuts against the medium abutting surface 30, moderate elasticity is applied to the blade portion of the impeller 13 so that slippage occurs between the impeller 13 and the medium. Give friction. Accordingly, the medium 38 is prevented from being excessively pressed against the medium abutting surface 30 to cause the medium 38 to be wrinkled or broken.
[0033]
Next, the operation will be described.
[0034]
Before inserting the medium 38, it is confirmed that it is in an initial state (step S1). In an initial state, the blades of the impeller 13 are in a horizontal state so as not to protrude into the conveyance path, the connection between the impeller 13 and the conveyance motor 6 is turned on, and the pinch roller 8 is lowered so as not to protrude into the conveyance path. It is in the state.
[0035]
When the medium is inserted and the sensors 33 and 34 detect light shielding, the transport motor 6 rotates and the feed roller 7 and the impeller 13 start rotating (steps S2 and S3).
[0036]
The medium 38 is nipped by the elasticity of the impeller 13 on the upper surface of the rib 36 of the lower conveyance guide 5 and moves in the direction of the medium abutting surface 30. Although the feed roller 7 protrudes from the upper conveyance guide 4 and rotates, the opposing pinch roller 8 is lowered, and the medium 38 moves along the convex rib 35 on the side of the feed roller 7. The skew correction is performed without contacting the feed roller 7.
[0037]
Eventually, when the medium 38 hits the medium abutting surface 30, the sensor 31 and sensor 32 detect the light shielding, and then the sensor 16 detects that the impeller 13 is in a position retracted from the upper conveyance guide 4. Is stopped (steps S4, S5, S6). Next, the inserter motor 14 is rotated, the impeller 13 and the conveyance motor 6 are turned off, the impeller 13 is stopped, the pinch roller 8 is raised, and the medium 38 is sandwiched between the feed roller 7. In this state, the motor 6 is rotated and the medium 38 sandwiched between the feed roller 7 and the pinch roller 8 is conveyed (steps S7, S8, S9). When transported to the MS tape read / write position, the motor 6 is stopped and the MS head is raised (steps S10, S11, S12). The motor 6 is rotated to read the contents of the MS tape while conveying the medium 38, and information is written to the MS tape (step S13). When the medium passes through the feed roller 7 and passes through the sensor 34, and the sensor 34 detects light transmission, the MS head is lowered, and the inserter motor 14 is driven to rotate the cam 18 to lower the pinch roller 8, Further, the motor 6 is stopped (steps S14 and S15).
[0038]
In the above description, the number of impellers 13 is one, but a plurality of impellers 13 may be provided on the shaft 39 of the impeller 13 as shown in FIG.
[0039]
In the above description, the impeller 13 is made of rubber having elasticity. However, an elastic material such as a film shown in FIG. 9 or a rubber member attached to the tip of the film shown in FIG.
[0040]
In the above description, two pairs of sensors for detecting that the medium 38 has been inserted and sensors for detecting that the medium 38 has hit the abutting surface 30 are provided. It may be detected by a pair of sensors.
[0041]
In the above description, the mounting of the MSR / W unit has been described in order to reduce the size of the inserter unit. However, the skew correction mechanism is not limited to an apparatus having the MSR / W unit.
[0042]
【The invention's effect】
The first effect is that the skew correction mechanism is improved in reliability and processing speed, and skew correction is also performed in a passbook in which an MS tape is attached in the vicinity of the side that is abutted against the medium abutting surface 30. Is possible.
[0043]
The reason is that the MSR / W unit 10 is a medium transport system, so that the MS head 12 protruding holes in the lower transport guide 5 are formed to a minimum, so that in all types of passbooks with different MS tape application positions. When correcting skew, stable skew correction is possible without the end of the medium falling into the hole for projecting the MS head 12. Further, in the upper conveyance guide 4 which is a guide on the feed roller 7 side of the conveyance path, a rib 35 is provided on the side of the feed roller 7 opposite to the medium abutting surface 30, so that the medium 38 is corrected at the time of skew correction. This is because the feed roller 7 is not caught.
[0044]
The second effect is that the passbook inserter mechanism unit 1 of the passbook processing apparatus can be reduced in size and simplified.
[0045]
The reason for this is that the impeller 13 is used as the skew correction roller, and the medium is sandwiched and moved by the impeller 13 and the convex rib 36 of the lower conveyance path 5 to counter the skew correction roller. It became possible to delete the pinch roller and the drive mechanism of the pinch roller. As a result, with respect to the MSR / W unit 10 mounted on the lower part of the transport path, the skew correction mechanism can be mounted on the upper part of the transport path, so that the MSR / W unit 10 is placed near the skew correction mechanism on the lower part of the transport path. This is because it became possible to implement.
[Brief description of the drawings]
FIG. 1 is a side view showing an overall configuration of the present invention.
FIG. 2 is a perspective view showing details of a portion that transmits rotation from the motor 6 of FIG. 1 to a gear 22 attached to the shaft of the impeller.
3 is a top view showing details of the arrangement of sensors 31, 32, 33, and 34 in FIG. 1. FIG.
4 is a front view showing a configuration of a portion of the impeller 13 and ribs 35 and 36 in FIG. 1. FIG.
FIG. 5 is a side view showing the configuration of the impeller 13, the ribs 35 and 36, and the pinch roller 8 when correcting skew.
6 is a front view showing the configuration of the impeller 13, ribs 35 and 36, and the pinch roller 8 when the medium is transported. FIG.
7 is a flowchart showing operations of skew correction, MS tape reading / writing, and medium conveyance in FIG. 1; FIG.
FIG. 8 is a perspective view showing a modification of the impeller according to the present invention.
FIG. 9 is a perspective view showing another modification of the impeller according to the present invention.
FIG. 10 is a perspective view showing still another modified example of the impeller according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Passbook inserter mechanism part 2 Form inserter mechanism part 3 Printing mechanism part 4 Upper conveyance guide 5 Lower conveyance guide 6 Conveyance motor 7 Feed roller 8 Pinch roller 9 Gate 10 MSR / W unit 11 Solenoid 12 MS head 13 Impeller 14 Inserter motor 15 Cam mechanism portion 16, 31, 32, 33, 34 Sensor 17 Cam shaft 18, 19 Cam 20 Pinch roller bracket 21, 28 Spring 22, 23, 25, 27, 29 Gear 24, 37, 39 Shaft 26 Arm 30 Media contact Surface 35, 36 Rib 38 Medium

Claims (5)

A guide for guiding one side of the print medium to be conveyed;
A transport mechanism for transporting the print medium;
An abutting surface against which one side of the printing medium is abutted so as to align the angles of the printing medium;
An impeller for rotating the blade portion in contact with the print medium and moving the print medium so as to abut against the abutting surface along the guide;
In the medium transport device having a rib provided at a position facing the impeller of the guide ,
The transport mechanism section includes a second guide facing the guide,
A roller surface that protrudes from the second guide and has a feed roller that contacts and conveys the print medium;
The medium conveying apparatus according to claim 1, wherein a rib having a height substantially the same as a height at which the feed roller protrudes is provided on a side portion of the feed roller of the second guide . The impeller is an impeller having two elastic blades extending in opposite directions from the rotation axis,
A detector for detecting the rotational phase of the impeller;
An abutment detection unit that detects that the print medium has abutted against the abutment surface;
An impeller control unit that stops at a position where the impeller does not interfere with the conveyance of the print medium when it is detected that the print medium hits the abutting surface;
A pinch roller that protrudes from the guide and conveys the print medium while sandwiching the print medium with the feed roller during conveyance of the print medium;
A pinch roller moving part for projecting and retracting the pinch roller from the guide;
A pinch roller movement control unit that causes the pinch roller to protrude from the guide when it is detected that the print medium has hit the abutting surface;
An insertion detection sensor for detecting that the print medium has been inserted at a position where the print medium can be brought close to the abutting surface by the impeller;
When the impeller control unit detects that the print medium has been inserted into a position where the impeller can approach the abutting surface, the impeller control unit starts rotating the impeller,
The insertion detection sensor includes a medium passage sensor that detects that a print medium has passed the feed roller,
The medium conveying apparatus according to claim 1, wherein the pinch roller movement control unit retracts the pinch roller from the guide when detecting that the print medium has passed the feed roller . Including a medium passage sensor for detecting that the print medium has passed the feed roller;
The medium conveying apparatus according to claim 1, wherein the pinch roller is retracted from the guide when it is detected that the print medium has passed the feed roller . A head for reading information recorded on a tape affixed to the guide side of the print medium in the vicinity of the feed roller and writing information on the tape;
A head moving part for projecting and retracting the head from the guide;
A pinch roller movement control unit that causes the pinch roller to protrude from the guide when detecting that the print medium has hit the abutting surface;
The medium conveying apparatus according to claim 2 , wherein the medium conveying apparatus is provided. The insertion detection sensor includes a medium passage sensor that detects that the print medium has passed the feed roller,
The medium conveying apparatus according to claim 4 , wherein the pinch roller movement control unit retracts the head from the guide when it detects that the print medium has passed the feed roller.

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