JP5614359B2 - Feeding roller - Google Patents

Description

  The present invention relates to a feeding roller that performs a feeding operation such as bringing a medium to a reference position.

  A feeding roller that contacts a medium while rotating and feeds the medium is generally known. An example of the feeding roller is a width adjusting roller. The width-shifting roller is a roller for feeding a medium such as a passbook that is transported along the transport path in a direction orthogonal to the transport direction, and width-stamping the medium to a reference surface or the like. An example of the width adjusting roller is shown in FIG.

  The width adjusting roller 1 in the figure is composed of a roller portion 2 and a feeding rubber 3. The roller part 2 has a circular side surface. The dimension of the roller part 2 is set to about 12 to 13 mm in diameter. The roller unit 2 is stopped during the common work and is driven to rotate during the width-shifting work.

The payout rubber 3 is a rubber for directly contacting the medium and paying out the medium to bring it closer. The feeding rubber 3 is incorporated in a part of the outer peripheral edge of the roller portion 2. Specifically, a notch 4 is provided around the roller portion 2, and the feeding rubber 3 is embedded in the notch 4. Two notches 4 are provided around the circular roller portion 2. Specifically, two cutouts 4 are provided at a point- symmetrical position of the center point of the circumference of the circular roller portion 2. The feeding rubber 3 embedded in the two cutouts 4 intermittently contacts the medium as the roller unit 2 rotates, and the medium is fed out and brought closer to the width.

  Further, as other examples of the feeding roller, there are those described in Patent Document 1 and Patent Document 2.

  In the paper sheet separation roller of Patent Document 1, the circular roller portion is divided into two parts, and one of them is a half roller rubber. Then, by the rotation of the roller portion, the half of the roller rubber comes out in contact with the paper sheet medium.

  In addition, in the feeding / conveying roller of Patent Document 2, an arc-shaped elastic member is attached around the roller portion. Then, due to the rotation of the roller portion, the arc-shaped elastic member comes into contact with the recording paper and moves the recording paper.

JP 2010-76918 A JP-A-6-92489

  However, the conventional rollers described above have the following problems.

  In the width adjusting roller 1 of FIG. 1, when the payout rubber 3 that has deteriorated due to wear or the like is replaced, the payout rubber 3 is embedded in the notch 4, so that the work of removing and attaching the payout rubber 3 is not easy. Further, since a plurality of the delivery rubbers 3 are attached to the outer periphery of the roller portion 2 (two in the example of FIG. 1), it is not possible to complete the work by one operation, and the replacement work takes time. is there.

  Moreover, since the dimension of the roller part 2 is about 12-13 mm, the magnitude | size of the delivery rubber | gum 3 will be about several mm. For this reason, it is necessary to be careful in handling the small payout rubber 3, and the payout rubber 3 may fall into the apparatus from the opening of the apparatus during the replacement work, resulting in poor workability.

  In addition, in the paper sheet separation roller of Patent Document 1, it is easy to replace the half of the roller rubber itself, but a part of the periphery of the roller portion 2 as shown in FIG. 1 (two places in FIG. 1). It is structurally difficult to provide rubber, and there is a problem that the cost of roller rubber parts increases.

  Further, in the feeding / conveying roller of Patent Document 2, when the elastic member is replaced, the elastic member is embedded in the roller portion when the elastic member is replaced, as in the case of the width-shifting roller 1 in FIG. There's a problem.

The present invention has been made in view of the above-described problems, and is a feed roller that feeds out a medium by using a frictional force. (1) A roller portion that is rotatably supported and a feed portion attached to the roller portion. (2) The roller portion includes an annular groove formed on the entire periphery of the roller portion. (3) The feeding rubber is formed in an annular shape, and is formed in the annular groove of the roller portion. fitting and, in one or more locations (4) a groove bottom of the annular groove, the feeding rubber with a raised portion which protrudes from the annular groove, (5) the annular groove, the periphery of the roller portion An outer groove formed over the entire circumference, and an inner groove opening on one side of the roller portion; (6) a portion on the peripheral edge side of the inner groove, and the feeding rubber by the raised portion At a location other than where the Characterized in that the roller unit provided with a cover plate to prevent the feeding rubber protrudes.

  Since the feeding rubber is formed in an annular shape and fitted into the annular groove of the roller portion, the feeding rubber can be easily attached and detached.

It is a perspective view which shows the conventional width adjusting roller. It is a perspective view which shows the payout roller which concerns on 1st Embodiment of this invention. It is a perspective view which shows the delivery roller which concerns on 1st Embodiment of this invention in the state which removed the delivery rubber | gum. It is a perspective view which shows the delivery rubber | gum of the delivery roller which concerns on 1st Embodiment of this invention. It is a perspective view which shows the cross section of the roller part of the feeding roller which concerns on 1st Embodiment of this invention. It is a perspective view which shows the cross section of the roller part which mounted | wore with the delivery rubber | gum of the delivery roller which concerns on 1st Embodiment of this invention. It is a front view which shows the relationship between the feeding roller which concerns on 1st Embodiment of this invention, and the traveling path upper surface of a medium. It is a side view which shows the relationship between the feeding roller which concerns on 1st Embodiment of this invention, and the traveling path upper surface of a medium. It is a side view which shows the relationship between the feeding roller which concerns on 1st Embodiment of this invention, and the traveling path upper surface of a medium. It is a front view which shows the payout roller which concerns on 2nd Embodiment of this invention. It is a side view which shows the payout roller which concerns on 2nd Embodiment of this invention. It is a side view which shows the relationship between the feeding roller which concerns on 2nd Embodiment of this invention, and the traveling path upper surface of a medium. It is a front view which shows the operating state of the feeding roller which concerns on 2nd Embodiment of this invention. It is a side view which shows the operating state of the feeding roller which concerns on 2nd Embodiment of this invention. It is a front view which shows the payout roller which concerns on 3rd Embodiment of this invention. It is a side view which shows the payout roller which concerns on 3rd Embodiment of this invention. It is a perspective view which shows the payout roller which concerns on 3rd Embodiment of this invention. It is a side view which shows the relationship between the feeding roller which concerns on 3rd Embodiment of this invention, and the traveling path upper surface of a medium. It is a perspective view which shows the payout roller which concerns on 4th Embodiment of this invention.

  Hereinafter, the feeding roller according to the embodiment of the present invention will be described. The feeding roller according to the present invention is a roller for performing a feeding operation such as width-adjusting the medium using a frictional force. Specifically, the feeding roller of the present invention is a roller for narrowing the medium conveyed by, for example, a conveying device in a direction perpendicular to the conveying direction. The feeding roller of the present invention can be used for all applications that require feeding of a medium. Hereinafter, in this embodiment, an example in which a feeding roller is incorporated in a printer will be described.

[First embodiment]
The printer is a printer installed at a financial institution. For this reason, the medium is a passbook, slip, certificate or the like. The feeding roller according to the present embodiment uses a passbook or the like conveyed through the printer as a width-shifting roller for shifting the width to a reference surface for printing, or uses a medium for reading / writing a magnetic stripe or other processing. It is used as a width adjusting roller for width adjusting.

  On the top surface of the desk or the front surface of the printer, there is provided a printer insertion / extraction port for taking in and out the medium such as the passbook. A conveyance path is provided from the insertion / discharge port toward the inside of the printer. The transport path includes upper and lower guide plates, a reference surface, a transport mechanism, and the like. The reference plane is set on one side of the conveyance path. This reference plane is a plane that serves as a reference for positioning the medium in order to perform various processes inside the printer.

  The transport mechanism of the transport path is provided with a plurality of feed rollers, press rollers, and the like. The medium inserted from the insertion / discharge port is transported into the printer by the feed roller, the press roller, and the like, and the medium after processing such as printing is transported to the insertion / discharge port.

  A feeding roller 11 (see FIG. 2) as a width adjusting roller is provided in the conveyance path. The feeding roller 11 is a roller for bringing the medium closer to the reference surface. The feeding roller 11 is disposed in a direction orthogonal to the feed roller and the like, and narrows the medium transported for printing on the transport path to the reference surface.

  As shown in FIG. 2, the feeding roller 11 includes a roller portion 12 that is rotatably supported and a feeding rubber 13 attached to the roller portion 12.

  As shown in FIGS. 2, 3, 5, and 6, the roller portion 12 is formed in a substantially thick disk shape, and a shaft hole 14 is provided at the center thereof. The roller unit 12 is made of synthetic resin, metal, or the like. An annular groove 15 is provided on the peripheral edge of the roller portion 12 over the entire circumference. The annular groove 15 is a groove for fitting the feeding rubber 13. The annular groove 15 is provided with raised portions 16 at two positions on the bottom of the groove. The raised portion 16 is a portion for projecting the feeding rubber 13 from the annular groove 15 into a protruding shape. The raised portion 16 is formed so as to be raised so as to make the annular groove 15 shallow. Two raised portions 16 are provided at point-symmetrical positions with respect to the center point of the roller portion 12. Note that one or three or more raised portions 16 may be provided depending on various conditions such as the type of the medium. Further, as shown in FIGS. 5 and 6, the shape of the raised portion 16 may be a square shape, a trapezoidal shape, a saw shape, a wave shape, or the like, in addition to a rounded tip shape. The size of the raised portion 16 is also adjusted according to the protruding amount of the feeding rubber 13. As a result, the position, size, and number of the feeding rubber 13 protruding from the annular groove 15 are adjusted. The shape of the feeding rubber 13 (the shape protruding from the annular groove 15) is also adjusted to a triangle, a quadrangle, a trapezoid, a saw shape, a wave shape, or the like.

  The annular groove 15 is set to a depth at which the feeding rubber 13 is completely buried except for the raised portion 16. That is, the ring-shaped groove 13 is arranged so that the feeding rubber 13 attached to the ring-shaped groove 15 protrudes from the ring-shaped groove 15 at the raised portion 16 and comes into contact with the medium, and is completely buried at other portions and does not come into contact with the medium. A depth of 15 is set.

  The feeding rubber 13 is a member for directly contacting the medium and feeding the medium to the reference surface side by a frictional force so as to make it closer. As shown in FIG. 4, the feeding rubber 13 is formed in an annular shape and is fitted into the annular groove 15 of the roller portion 12. The feeding rubber 13 has a circular cross-sectional shape. That is, the feeding rubber 13 is formed in a shape in which a round bar-like rubber is formed into an annular shape. A portion of the feed rubber 13 that protrudes from the annular groove 15 at the raised portion 16 is a protruding portion 17 that contacts the medium. The projecting portion 17 comes into contact with the medium as the roller portion 12 rotates, and feeds the medium to the reference surface side so that the width is reduced. In addition, the cross-sectional shape of the feeding rubber 13 may be a polygon such as a triangle, a quadrangle, or a pentagon, a trapezoid, or the like other than a circle. The surface of the feeding rubber 13 is formed in a flat surface shape without unevenness. That is, since the friction coefficient of the rubber itself is large, it is not necessary to provide unevenness, and it is formed in a flat surface. The surface of the feeding rubber 13 may be roughened or roughened to change the friction coefficient. That is, the surface treatment may be used to finish the surface, or irregularities such as saw teeth or gears may be formed.

  The cross-sectional dimension of the feeding rubber 13 is set according to the width of the annular groove 15 of the roller portion 12. Specifically, the cross-sectional dimension of the feeding rubber 13 is set to be slightly larger than the width of the annular groove 15 so as to be surely fitted into the annular groove 15.

  The feeding roller 11 configured as described above operates as follows.

  The feed roller 11 is installed in the transport path of the printer, and feeds a medium such as a passbook transported through the transport path in a direction perpendicular to the transport direction, and brings it closer to the reference surface.

  At this time, when the feeding roller 11 is rotated, when the projecting portion 17 of the feeding rubber 13 comes into contact with the medium, the projecting portion 17 feeds the medium in a direction perpendicular to the conveying direction. Since the feeding rubber 13 is buried in the annular groove 15 of the roller portion 12 at portions other than the projecting portion 17, the feeding roller 11 rotates idly until the next projecting portion 17 comes into contact with the medium. And the protrusion part 17 contacts a medium several times and pays out, and a medium is brought close to a reference plane.

  When the feeding rubber 13 of the projecting portion 17 is worn or deteriorated due to use for a certain period and the frictional force is reduced, the feeding rubber 13 is shifted in the annular groove 15 of the roller portion 12 so that the feeding rubber 13 is worn. The part that is not positioned is positioned on the raised portion 16 of the annular groove 15 to form the protruding portion 17.

  When the above-mentioned maintenance due to use for a certain period is repeated several times and the entire extended rubber 13 is worn out, the extended rubber 13 is replaced. In this case, the feeding rubber 13 is removed from the annular groove 15 of the roller portion 12 and a new feeding rubber 13 is attached to the annular groove 15.

  As described above, the feeding rubber 13 is formed in an annular shape so as to be fitted into the annular groove 15 of the roller portion 12, so that the feeding rubber 13 can be easily attached to and detached from the roller portion 12. . Even when the diameter of the roller portion 12 is small (for example, about 12 to 13 mm), the feeding rubber 13 can be easily attached to and detached from the roller portion 12.

  Further, the feeding rubber 13 has a structure in which the feeding rubber 13 does not easily come off during operation because the direction in which the frictional force is applied is the circumferential direction of the roller portion 12 and the direction along the annular groove 15. Improves.

  Since the feeding rubber 13 is formed into a single part by forming the ring, the number of parts is reduced and the cost can be reduced.

  Further, since the feeding rubber 13 is formed into a single part in a ring shape and is difficult to be detached during operation, the fitting between the annular groove 15 of the roller portion 12 and the feeding rubber 13 can be loosened. Exchange becomes easy. That is, workability at the time of replacement of the feeding rubber 13 is improved.

  Further, since the feeding rubber 13 is formed into a single part by forming an annular shape and the outer shape of the feeding rubber 13 is increased, it is less likely to be lost than the conventional small feeding rubber 3 shown in FIG. Become.

In addition, since it is the protruding portion 17 that is a part of the annular feeding rubber 13 that contacts the medium during the width-shifting operation, when the feeding rubber 13 is worn , the rubber is displaced and is not worn. Can be used, and the life of the feeding rubber 13 can be extended. As a result, the maintenance interval can be extended and the running cost can be reduced.

[Second Embodiment]
Next, a second embodiment of the present invention will be described.

  In the present embodiment, the roller portion 12 of the feeding roller 11 of the first embodiment is improved.

  In the first embodiment, the roller portion 12 of the feeding roller 11 is formed in a circular shape and installed in the conveyance path of the printer. In this case, there is no problem if a retracting mechanism is provided in the feeding roller 11, but if the retracting mechanism is not provided, the medium may come into contact with the feeding roller 11 when the medium is transported. Specifically, as shown in FIGS. 7 and 8, the lower end portion of the roller portion 12 of the feeding roller 11 may be positioned below the upper surface A of the traveling path of the medium 20.

  In this case, as shown in FIG. 8, when the medium 20 is being transported along the transport path, the end of the medium 20 may be caught by the roller portion 12 at the portion B. Further, as shown in FIG. 9, the end portion of the medium 20 is a portion C, and may be caught by the annular groove 15 of the roller portion 12 or the feeding rubber 13.

  As shown in FIGS. 10 and 11, the roller portion 22 of the feed roller 21 of the present embodiment has an elliptical shape. That is, the roller portion 12 of the feeding roller 11 of the first embodiment is circular, whereas the roller portion 22 of the present embodiment is elliptical. The raised portions (not shown) of the roller portion 22 are provided at both ends in the major axis direction (both ends in the left-right direction in FIG. 10). As a result, the projecting portion 25 is provided at both ends of the roller portion 22 in the major axis direction by fitting the feeding rubber 24 into the annular groove 23 around the roller portion 22. The feeding rubber 24 is the same as the feeding rubber 13 of the first embodiment.

  As shown in FIG. 10, the feeding roller 21 having the above configuration is stopped so that the major axis direction of the roller portion 22 becomes horizontal as shown in FIG. As a result, the lower end portion of the roller portion 22 stopped so that the major axis direction is horizontal is positioned above the upper surface A of the traveling path, so that the roller portion 22 protrudes into the conveyance path and comes into contact with the medium 20. However, the feeding rubber 24 does not protrude into the conveyance path and come into contact with the medium 20.

  In this state, when the medium 20 is transported on the transport path, as shown in FIG. 12, the end of the medium 20 is caught by the end surface of the roller portion 22 of the feed roller 21, the annular groove 23, and the feed rubber 24. Nothing will happen. That is, the medium 20 is smoothly conveyed.

  When the medium 20 is fed by the feeding rubber 24, as shown in FIGS. 13 and 14, the protrusions 25 provided at both ends in the major axis direction of the roller portion 22 come into contact with the medium 20, and this medium 20. Is extended to the reference plane side to make it closer.

  Thus, the same effect as that of the first embodiment is obtained, and the medium 20 is not brought into contact with the feeding roller 21 when the medium 20 is conveyed, and the reliability of the feeding roller 21 is improved.

[Third embodiment]
Next, a third embodiment of the present invention will be described.

  The feeding roller of the present embodiment is an improvement of the annular groove 15 of the feeding roller 11 of the first embodiment. Specifically, the feeding roller 31 of the present embodiment includes a roller portion 32 and a feeding rubber 33 as shown in FIGS.

  The roller portion 32 is formed in a substantially thick disk shape, and a shaft hole 34 is provided at the center thereof. The roller portion 32 is provided with an annular groove 35 for fitting the feeding rubber 33. The annular groove 35 includes an outer groove portion 35A and an inner groove portion 35B.

  The outer groove portion 35A is provided on the peripheral edge portion of the roller portion 32, similarly to the annular groove 15 of the first embodiment. A raised portion (not shown) similar to the raised portion 16 of the first embodiment is provided on the groove bottom of the outer groove portion 35A. Thereby, the protrusion part 36 is formed by the extending | stretching rubber | gum 33 being fitted by 35 A of outer side groove parts.

  The inner groove portion 35 </ b> B is a groove for supporting the feeding rubber 33 so as not to protrude from the peripheral edge portion of the roller portion 32. The inner groove portion 35 </ b> B is configured as a groove portion that opens on the side surface of the roller portion 32. Thereby, the outer side of the inner side groove part 35B becomes the cover plate 35C. The cover plate 35 </ b> C prevents the feed rubber 33 from protruding from the roller portion 32 and prevents the feed rubber 33 from contacting the medium 20.

  The feeding rubber 33 is the same as 13 in the first embodiment.

  In addition, the roller part 32 may be comprised as a member divided into two, in order to form the outer side groove part 35A and the inner side groove part 35B, and may be comprised integrally.

  When the feeding roller 31 configured as described above is rotated, when the protruding portion 36 of the feeding rubber 33 comes into contact with the medium 20, the protruding portion 36 feeds the medium 20 in a direction orthogonal to the conveying direction. Since the feeding rubber 33 is covered with the cover plate 35C at portions other than the protruding portion 36, the feeding roller 31 is not brought into contact with the medium 20 without contacting the feeding rubber 33 and the medium 20. Is idle. And the protrusion part 36 contacts a medium several times and pays out, and a medium is brought close to a reference plane.

  When the feeding rubber 33 of the protrusion 36 is worn or deteriorated due to use for a certain period of time and the frictional force is reduced, the feeding rubber 33 is shifted in the annular groove 35 of the roller portion 32 to cause wear of the feeding rubber 33 or the like. The portion that is not located is positioned at the raised portion of the annular groove 35 to form a protrusion 36.

  If this maintenance is repeated several times and the entire feed rubber 33 is worn away, the feed rubber 33 is replaced. In this case, the feeding rubber 33 is removed from the annular groove 35 of the roller portion 32 and a new feeding rubber 33 is attached.

  As described above, the portion of the feeding rubber 33 other than the protruding portion 36 is covered with the cover plate 35C, so that the feeding rubber 33 and the medium 20 are in contact with each other at the portion of the cover plate 35C as shown in FIG. Disappears. Thereby, the reliability with respect to the feeding roller 31 is improved.

[Fourth embodiment]
Next, a fourth embodiment of the present invention will be described. The present embodiment is an invention in which the feeding rubber 13 of the first embodiment is improved so that it can be easily removed from the roller portion 12.

  As shown in FIG. 19, the feeding roller 39 of the present embodiment is provided with a removal slit 40. The removal slit 40 is provided on the side wall of the roller portion 12. Specifically, the removal slit 40 is configured by a U-shaped cutout provided on one side wall of the roller portion 12. The removal slit 40 is inserted into the annular groove 15 so that a bar material such as a screwdriver 41 can be inserted into the inside of the feeding rubber 13 from the outside to remove the feeding rubber 13.

  Other configurations are the same as those of the first embodiment.

  The feeding roller 39 configured as described above operates in the same manner as in the first embodiment.

  Furthermore, in this embodiment, when removing the feeding rubber 13 from the annular groove 15 of the roller portion 12, the driver 41 is inserted into the removal slit 40. Thereby, the tip of the driver 41 is inserted into the inside of the feeding rubber 13. In this state, the feeding rubber 13 is lifted from the annular groove 15 and removed.

  As a result, the payout rubber 13 can be easily detached from the annular groove 15, and the workability of replacing the payout rubber 13 is greatly improved.

[Modification]
In each of the embodiments described above, the width-adjusting roller has been described as an example of the feeding roller. However, in a medium separation mechanism, an auto turn page mechanism, a medium transport mechanism, or the like, a member having a different friction coefficient is assembled to a part of the roller. The present invention can be applied to all the mechanisms. Moreover, although the bankbook etc. were demonstrated to the example as a medium, this invention is applicable also when paying out a banknote etc.

  Further, since the outer shape of the feeding roller of the present invention can be easily formed in the same manner as the existing feeding roller, it has the same shape as the conventional feeding roller and is used instead of the conventional feeding roller. Also good. For this reason, the feeding roller of the present invention is a roller having excellent versatility.

  In the first embodiment, the example in which one roller rubber 13 is provided in the roller portion 12 has been described. However, the present invention can also be applied to a roller having a plurality of rows of roller rubbers 13. In this case, the same number of roller portions 12 as the number of the feeding rubbers 13 to be attached are integrally configured. For example, when the feeding rubber 13 is arranged in two rows, the two roller portions 12 are integrally combined to form the annular groove 15 in two rows. When the feeding rubber 13 is arranged in three or more rows, the three or more roller portions 12 are integrated together to form the annular groove 15 in three or more rows. The same applies to the second embodiment. In the third embodiment, the two groove portions 32 are integrated together so that the openings of the inner groove portions 35B of the annular groove 35 face each other, thereby forming the annular grooves 35 in two rows.

  Thereby, there can exist an effect | action and effect similar to said each embodiment.

  In the first embodiment, the cross-sectional dimension of the feeding rubber 13 is set to be slightly larger than the width of the annular groove 15 so that the feeding rubber 13 can be stably fitted into the annular groove 15. Depending on, other dimensions may be set. For example, the cross-sectional dimension of the feeding rubber 13 is considerably larger than that of the annular groove 15 (for example, the sectional dimension of about 10% or 20% of the width dimension of the annular groove 15). You may make it fit in. Further, the cross-sectional dimension of the feeding rubber 13 may be made smaller than that of the annular groove 15 so that the feeding rubber 13 is gently fitted into the annular groove 15 so that the feeding rubber 13 is easily displaced within the annular groove 15. As a result, when the feeding rubber 13 comes into contact with the medium and feeds out the medium, the feeding rubber 13 is slightly displaced in the annular groove 15 at the same time as the medium is fed out, and the contact surface with the medium is displaced. Uneven wear can be prevented. Thereby, the maintenance which shifts the feeding rubber 13 becomes unnecessary, the running cost can be reduced, and the life of the feeding rubber 13 can be extended. Further, a one-way clutch mechanism may be incorporated in the annular groove 15 to prevent uneven wear of the feeding rubber 13 while shifting the feeding rubber 13 to one side.

  In the said 1st Embodiment, although the protruding part 16 was provided in the position of two places of the annular groove 15, you may provide in the position of 1 or several places as needed.

  In the said 4th Embodiment, although the slit 40 for removal was provided in the roller part 12 of 1st Embodiment, you may provide in the roller part of other embodiment.

  Also in this case, the same operation and effect as the fourth embodiment can be obtained.

  In the third embodiment, the circular groove 35 is provided in the circular roller portion 32 similar to the first embodiment, but the annular groove 35 may be provided in the elliptical roller portion 22 similar to the second embodiment. . Thereby, it can prevent more reliably that the medium 20 contacts the roller part 22. FIG.

  In the second embodiment, the roller portion 22 is formed in an elliptical shape, and the protruding portions 25 are provided at both ends in the major axis direction of the roller portion 22. May be. In this case, the raised portions 16 are provided at the positions of the respective vertices of the polygon, and the protruding portions 25 are provided at the respective vertices of the polygon.

  11: feeding roller, 12: roller portion, 13: feeding rubber, 14: shaft hole, 15: annular groove, 16: raised portion, 17: protruding portion, 20: medium, 21: feeding roller, 22: roller portion, 23 : Annular groove, 24: feeding rubber, 25: protrusion, 31: feeding roller, 32: roller section, 33: feeding rubber, 34: shaft hole, 35: annular groove, 35A: outer groove, 35B: inner groove, 35C : Cover plate, 36: protrusion, 39: feeding roller, 40: slit for removal, 41: screwdriver.

Claims (3)

In the feeding roller that feeds out the medium using frictional force,
A roller portion rotatably supported, and a payout rubber attached to the roller portion,
The roller part is provided with an annular groove formed over the entire circumference of the peripheral part,
It said feeding rubber is formed in an annular shape, fitted into the annular groove of the roller unit,
One or a plurality of locations on the bottom of the annular groove includes a raised portion for projecting the payout rubber from the annular groove,
The annular groove includes an outer groove formed on the entire periphery of the roller portion and an inner groove opening on one side of the roller portion,
A lid plate for preventing the feeding rubber from protruding from the roller portion at a location on the peripheral edge side of the inner groove portion other than the location where the feeding rubber protrudes by the raised portion. Feeding roller to do. In the feeding roller according to claim 1 ,
The roller part is formed in an elliptical shape or a polygonal shape,
3. A feeding roller, wherein the raised portions are provided at both ends of the elliptical roller portion in the major axis direction or at each vertex of a polygonal shape. In the feeding roller according to claim 1 or 2 ,
A feeding roller comprising a removal slit provided on a side wall of the roller portion so as to penetrate the annular groove, and a rod member is inserted into the feeding rubber from outside to remove the feeding rubber.

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