JPH09180004A - Writing device and ticket issuing device equipped with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to accurately write magnetic information and to improve the operability. SOLUTION: This magnetic wiring device is equipped with a magnetic head 40 and a platen roller 42 which faces it. The platen roller is fitted to a support arm 43 which is freely rotatable on a pivot 44, and to this support arm 43, an abutting roller 46 is fitted. The support arm 43 is energized by a tension spring 48 and pressed against the adjustment member of an adjusting mechanism 50. The platen roller 42 and abutting roller 46 are formed out of materials which have nearly equal coefficients of thermal expansion. The abutting roller 42 expands and contacts at the same late with the platen roller 42 to automatically adjust the gap G between the magnetic head 40 and platen roller 42 to a specific value.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a writing device for writing magnetic information on tickets, and a ticket issuing device provided with the writing device, such as an automatic transfer checkout machine.

[0002]

2. Description of the Related Art As a ticket issuing device for issuing tickets in which magnetic information is recorded, for example, a checkout machine which takes in a boarding pass ticket or a commuter pass and issues a checkout ticket is widely used. This type of checkout machine generally has an apparatus main body equipped with an insertion port for inserting a boarding pass ticket or a commuter pass, and the inserted boarding pass ticket is taken into the apparatus body and read by a reading device. Sent to. Then, after the magnetic information is read by the reading device, the boarding pass ticket is collected in the collection box.

On the other hand, in the main body of the apparatus, a roll around which the recording paper is wound, a cutter for cutting the recording paper drawn out from the roll to a predetermined size, and a printing device for printing predetermined information on the cut recording paper. , And a writing device or the like for writing predetermined magnetic information.

Then, the settlement ticket formed by printing and magnetically recording predetermined information on the recording paper is issued to the user through the slot. In the payment machine configured as described above, the writing device has a magnetic head and a platen roller facing the magnetic head with a predetermined gap. Then, the recording paper is pressed against the magnetic head by the platen roller while passing between the magnetic head and the plantain roller, and at the same time, predetermined magnetic information is written by the magnetic head.

[0005]

In the writing device having the above structure, in order to accurately write magnetic information on the recording paper, it is necessary to maintain the gap between the magnetic head and the platen roller at a predetermined value. is there. Therefore, the writing device is generally provided with an adjusting mechanism for adjusting the gap.

However, since the platen roller made of rubber or the like expands or contracts in response to changes in the ambient temperature, the gap easily changes. When the gap changes, it becomes difficult to write accurate information, and in order to prevent this, it is possible to adjust the gap frequently by the adjusting mechanism, but in this case, the operation is troublesome. Becomes

The present invention has been made in view of the above points, and an object thereof is to maintain a constant gap between the platen roller and the magnetic head even when the platen roller expands and contracts, and to obtain magnetic information. An object of the present invention is to provide a writing device that can be written accurately and has excellent operability, and a ticket issuing device including the writing device.

[0008]

In order to achieve the above object, a writing apparatus of the present invention according to claim 1 is a magnetic head for writing magnetic information on a recording medium, and the magnetic head is arranged so as to face the magnetic head. A platen roller for bringing the recording medium into contact with the magnetic head at a predetermined pressure, a support means for supporting the platen roller so that the platen roller can be brought into contact with and separated from the magnetic head, and a gap between the magnetic head and the platen roller are provided. An adjusting mechanism for adjusting the platen roller to a predetermined value via the supporting means, and a thermal expansion coefficient which is provided between the supporting means and the adjusting mechanism and which is substantially equal to that of the platen roller. A holding member for moving the platen roller via the supporting means in accordance with contraction and expansion of the platen, and holding the gap at the predetermined value. It is set to.

According to a third aspect of the present invention, there is provided a writing device for writing magnetic information on a recording medium, a platen roller arranged so as to face the magnetic head, and a rotatable platen roller. A support arm that supports the platen roller so that the platen roller can be brought into contact with and separated from the magnetic head; an abutting member that is attached to the support arm and that is located on the opposite side of the platen roller with the pivot interposed therebetween; An adjusting mechanism that rotates the support arm via a contact member to adjust a gap between the platen roller and the magnetic head, and urges the support arm in a direction in which the platen roller approaches the magnetic head. Urging means for contacting the recording medium with the magnetic head at a predetermined pressure and pressing the abutting member against the adjusting mechanism. That.

The abutting member has a coefficient of thermal expansion substantially equal to that of the platen roller, contracts and expands in response to contraction and expansion of the platen roller, and rotates the support arm to close the gap. It is characterized in that it is held at the predetermined value.

According to the writing device configured as described above, the gap between the platen roller and the magnetic head is adjusted to a predetermined value by the adjusting mechanism. When the platen roller expands or contracts in response to a change in environmental temperature, the holding member or the abutting member having substantially the same thermal expansion coefficient expands or contracts at the same rate as the platen roller. Then, the platen roller is moved with respect to the magnetic head by the expansion and contraction of the holding member or the abutting member, and the variation of the gap due to the expansion or contraction of the platen roller is automatically corrected, and the platen roller and the magnetic head are separated from each other. The gap therebetween is held at a predetermined value adjusted by the adjusting mechanism.

According to an eighth aspect of the present invention, there is provided a ticket issuing device including a device main body having an insertion slot, a paper feeding device which is disposed in the device main body and supplies tickets of a predetermined size, and the above-mentioned supply device. A printing device for printing predetermined information on the printed tickets, a writing device for writing magnetic information on the printed tickets having the predetermined information, and the slot for feeding the supplied tickets through the printing device and the writing device. Transporting means for issuing tickets from.

The writing device includes a magnetic head for writing magnetic information on the tickets, and a platen roller which is disposed so as to face the magnetic head and contacts the tickets with a predetermined pressure. A support means for supporting the platen roller so that it can be brought into contact with and separated from the magnetic head, and an adjusting mechanism for adjusting a gap between the magnetic head and the platen roller to a predetermined value via the support means. And having a coefficient of thermal expansion substantially equal to that of the platen roller and provided between the supporting means and the adjusting mechanism, depending on contraction and expansion of the platen roller,
A holding member for moving the platen roller via the supporting means to hold the gap at the predetermined value.

According to the ticket issuing apparatus of the tenth aspect of the present invention, the writing apparatus includes a magnetic head for writing magnetic information on the tickets, a platen roller arranged so as to face the magnetic head, and a pivot shaft. And a support arm that supports the platen roller so that the platen roller can be moved toward and away from the magnetic head, and a protrusion that is attached to the support arm and that is located on the opposite side of the platen roller with the pivot shaft interposed therebetween. An abutting member, an adjusting mechanism for rotating the support arm via the abutting member to adjust a gap between the platen roller and the magnetic head, and a direction in which the platen roller approaches the magnetic head. Biasing means for biasing the support arm to bring the tickets into contact with the magnetic head with a predetermined pressure and to push the abutting member against the adjusting mechanism. , And a.

The abutting member has a coefficient of thermal expansion substantially equal to that of the platen roller, contracts and expands in response to contraction and expansion of the platen roller, and rotates the support arm to close the gap. It is characterized in that it is held at the predetermined value.

According to the ticket issuing apparatus configured as described above, the printing apparatus prints predetermined information on the tickets fed by the paper feeding apparatus, and the writing apparatus writes predetermined magnetic information. After that, the ticket is issued from the slot of the device body.

In the writing device, the gap between the platen roller and the magnetic head is adjusted to a predetermined value by the adjusting mechanism. When the platen roller expands or contracts in response to a change in environmental temperature, the holding member or the abutting member having substantially the same thermal expansion coefficient expands or contracts at the same rate as the platen roller. Then, the platen roller is moved with respect to the magnetic head by the expansion and contraction of the holding member or the abutting member, and the variation of the gap due to the expansion or contraction of the platen roller is automatically corrected, and the platen roller and the magnetic head are separated. The gap therebetween is held at a predetermined value adjusted by the adjusting mechanism.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment in which the ticket issuing apparatus of the present invention is applied to a settlement machine will be described in detail below with reference to the drawings. First, the overall configuration will be briefly described. As shown in FIG. 1, the settlement machine includes a device body 1, and the device body is slidably mounted on a pair of guide rails 22.

A loading slot 1a is provided on the upper front surface of the apparatus main body 1. The loading slot accepts a boarding ticket and issues a ticket as a recording medium or a ticket described later to the user. . The slot 1a is provided with a shutter 4 for opening and closing the slot and a sensor 3 for detecting the insertion of a boarding ticket.

Inside the apparatus main body 1, there is provided a ticket transport path 21 formed by a plurality of transport belts functioning as transport means and a transport roller 23, and communicates with the slot 1a. Further, in the apparatus main body 1, a magnetic reading device 5, a magnetic writing device 6, a printing device 7, a cutter device 8, and a continuous band-shaped recording paper forming the ticket issuing unit 25 are wound along the ticket conveying path 21. A rolled paper roll 9 is provided.

In the vicinity of the ticket transport path 21, a paper feed motor 10 for drawing out the recording paper from the paper roll 9, a print motor 11 for driving the printing device 7, a cutter motor 12 for driving the cutter device 8, and a ticket. A transport motor 13 that drives the transport belt and the transport roller 23 that configure the transport path 21.
Is provided. The paper roll 9, the paper feed motor 10, and the cutter device 8 function as a paper feed unit that feeds recording paper of a predetermined size.

The magnetic reading device 5 has a magnetic head and a platen roller facing the magnetic head, and reads magnetic information from a boarding ticket inserted from the insertion opening 1a. The cutter device 8 cuts the recording paper pulled out from the paper roll 9 into a predetermined size, and the printing device 7 prints predetermined information on the cut recording paper. Further, as will be described later, the magnetic writing 6 has a magnetic head and a platen roller facing the magnetic head, and writes predetermined magnetic information on the cut recording paper.

On the other hand, inside the apparatus main body 1, there is provided a ticket collecting path 31 composed of a plurality of conveyor belts 33 and feed rollers 32, and the ticket conveying path 21 is provided between the slot 1a and the magnetic reader 5. It branches from and extends to the lower part of the device body. At the branch portion between the ticket transport path 21 and the ticket collection path 31,
A distribution gate 18 is provided.

As shown in FIGS. 1 and 2, the wrong ticket box 1 is located between the guide rails 22 outside the main body 1 of the apparatus.
5 and a collection box 14 are provided. The false ticket box 15 and the collection box 14 are the chute 24 and the chute 24, respectively.
It faces the sorting gates 34 and 35 of the ticket collection path 31 via 6. Then, the boarding ticket and the wrong ticket read by the magnetic reader 5 are collected in the collection box 14 and the wrong ticket box 15 through the ticket collection path 13.

As shown in FIG. 3, the magnetic writing device 6
Has a fixed magnetic head 40 and a platen roller 42 facing the magnetic head. The platen roller 42 is rotatably supported by a support arm 43 serving as a supporting unit, and is supported so as to be able to come into contact with and separate from the magnetic head 40.

More specifically, the support arm 43 is formed in an L shape, and the platen roller 42 is rotatably supported at one end thereof. A corner portion of the support arm 43 is rotatably supported by a device frame (not shown) by a pivot 44.
The pivot 44 is located downstream of the platen roller 40 with respect to the recording paper P conveyance direction A. Then, as the support arm 43 rotates about the pivot 44, the platen roller 42 moves in a direction in which the platen roller 42 moves toward and away from the magnetic head 40.

An abutting roller 46 functioning as an abutting member and a holding member is rotatably attached to the other end of the support arm 43. In addition, the support arm 43
A tension spring 48 as a biasing means is installed between the other end of the device and the device frame. Therefore, the support arm 4
3 is biased clockwise around a pivot 44, and the platen roller 42 is also biased in a direction approaching the magnetic head 40.

The writing device 6 is provided with an adjusting mechanism 50 for adjusting the gap G between the magnetic head 40 and the platen roller 42. The adjusting mechanism 50 has a plate-like adjusting member 54 provided so as to reciprocate along the conveyance direction A of the recording paper P by a pair of screws 52, and one end of the adjusting member 54 contacts the abutting roller 46. It constitutes the contact end 54a. The abutting roller 46 is biased by the tension spring 48 and is constantly pressed against the abutting end 54 a of the adjusting member 54.

Therefore, when the adjusting member 54 is moved, the support arm 43 is rotated in conjunction with this, and the gap G between the magnetic head 40 and the platen roller 42 can be adjusted. Then, by fixing the adjusting member 54 with the screw 52 in a state where the gap G is set to a predetermined value,
The rotation of the support arm 43 is restricted, and the platen roller 42
Are positioned with a gap G with respect to the magnetic head 40.

On the other hand, the platen roller and the abutting roller 46 are made of materials having substantially the same thermal expansion coefficient. For example, the platen roller 42 is made of urethane rubber, and the abutting roller 46 is made of polyacetal resin.

According to the settlement machine configured as described above,
When the boarding ticket 2 is inserted into the slot 1a of the apparatus body 1, the sensor 3 detects the boarding ticket and the shutter 4 is opened. As a result, the carry motor 13 rotates,
The boarding ticket 2 is taken into the apparatus body 1 and sent to the magnetic reader 5. Then, the magnetic information recorded on the back surface of the boarding ticket 2 is read by the magnetic reader 5.

Further, the paper feed motor 10 and the print motor 1
1 is rotationally driven to pull out the recording paper P from the paper roll 9, and the printing device 7 prints predetermined information on the pulled-out recording paper. After this printing, the cutter motor 11 rotates and the cutter device 8 operates to cut the recording paper P into a predetermined size.

After the reading is completed, the carry motor 13 is rotationally driven in the opposite direction, and the cut recording paper P is sent to the magnetic writing device 6 along the carry path. In the magnetic writing device 6, the recording paper P is the magnetic head 40 and the platen roller 42.
Is transported between. Meanwhile, the recording paper P is pressed against the magnetic head 40 by the platen roller 42 at a predetermined printing pressure, and predetermined magnetic information is written on the back surface of the recording paper by the magnetic head.

Then, the recording paper P on which predetermined information is printed and magnetically recorded passes through the reading device 5, where the magnetic information is confirmed, and then it is conveyed to the insertion slot 1a and issued as a settlement ticket from the insertion slot. To be done.

On the other hand, the boarding ticket 2 that has been taken into the apparatus main body 1 and read by the magnetic reader 5 is conveyed to the inlet 1a side by the conveying mechanism, and sent to the collecting conveying path 31 by the sorting gate 18. To be Further, the boarding pass 2 is collected through the gate 34 and the chute 16 into the collection box 1
4 In addition, the inserted wrong ticket is stored in the wrong ticket box 15 through the gate 35 and the chute 24.

When the collection box 14 for collecting the boarding ticket 2 is full and the collection box 14 is to be taken out, as shown in FIG. 2, the apparatus main body 1 is pulled out in the direction of the arrow to bring the collection box 14 to the outside. Exposed. In this state, the collection box 14 is taken out to dispose of the boarding ticket inside, and then the collection box 14 is returned to the original state.

As described above, the gap G in the magnetic writing device 6 is adjusted to a predetermined value by the adjusting mechanism 50 in advance. However, the platen roller 42 may expand or contract due to a change in environmental temperature. is there. For example, when the environmental temperature rises, the platen roller 4
When 2 expands thermally and the outer diameter increases, the gap G with the magnetic head 40 becomes narrow.

However, according to the present embodiment, since the platen roller 42 and the abutting roller 46 are formed of materials having substantially the same thermal expansion coefficient, the environmental temperature rises and the platen roller 42 is heated. When expanded, the abutting roller 46 also thermally expands at the same rate. When the abutment roller 46 expands due to thermal expansion, the abutment roller 46 is in contact with the abutment end 54a of the adjusting member 54, so that the support arm 43 receives the urging force of the tension spring 48. Rotate counterclockwise against. Therefore, the platen roller 42 is moved in a direction away from the magnetic head 40 by an amount corresponding to an increase in outer diameter due to thermal expansion, and as a result, the gap G is automatically maintained at a predetermined value.

On the contrary, when the platen roller 42 contracts and its outer diameter decreases due to the decrease in environmental temperature, the abutting roller 46 also contracts at the same rate. When the abutting roller 46 contracts and the outer diameter decreases, the support arm 43
Is rotated clockwise by the urging force of the tension spring 48. Therefore, the platen roller 42 is moved toward the magnetic head 40 by an amount corresponding to the decrease in the outer diameter due to the contraction, and as a result, the gap G is automatically maintained at a predetermined value.

According to the settlement machine configured as described above,
Even if the platen roller of the magnetic writing device expands or contracts due to a change in the environmental temperature, the gap between the platen roller and the magnetic head can be maintained at a predetermined value. Therefore, the magnetic writing device can always stably and accurately record desired magnetic information on the recording paper.

Further, according to the above magnetic writing apparatus, since the fluctuation of the gap G between the platen roller and the magnetic head can be automatically adjusted and maintained at a predetermined value, the gap is frequently changed by using the adjusting mechanism 50. It is not necessary to adjust G, and operability can be improved.

Further, in the magnetic writing device, the pivot 44 of the support arm 43 is located on the downstream side of the platen roller 42 with respect to the conveying direction A of the recording paper P.
The recording paper P can smoothly enter between the platen roller and the magnetic head 40, and jamming of the recording paper can be prevented.

The present invention is not limited to the above-described embodiment, but can be variously modified within the scope of the present invention. For example, the support arm 43 may include the platen roller 42.
As long as it has a rotation fulcrum between the contact roller 46 and the abutting roller 46, the shape is not limited to the L shape,
It can be modified if necessary.

Further, the holding member and the abutting member may be made of a material having a thermal expansion coefficient substantially the same as that of the platen roller, and it is not limited to the roller-like one as in the above-mentioned embodiment but a plate-like one. Alternatively, it may be formed in a rod shape. Further, the materials of the platen roller and the butting roller can be variously selected according to need.

The adjusting mechanism 50 is not limited to the combination of the plate-like adjusting member 54 and the screw 52, but may be constituted by an adjusting screw 60 attached to an apparatus frame (not shown) as shown in FIG. In this case, the adjusting screw 60
Is provided along the conveyance direction A of the recording paper P, and its tip is in contact with the abutting roller 46. The other structure is the same as that of the above-described embodiment.

[0046]

As described above in detail, according to the present invention, the gap between the platen roller and the magnetic head can be kept constant even when the platen roller expands and contracts, and the magnetic information can be accurately obtained. It is possible to provide a writing device capable of writing and excellent in operability, and a ticket issuing device including the writing device.

[Brief description of the drawings]

FIG. 1 is a sectional view schematically showing a settlement machine according to an embodiment of the present invention.

FIG. 2 is a plan view showing a state where the main body of the settlement machine is slid.

FIG. 3 is a side view showing a magnetic writing device of the settlement machine.

FIG. 4 is a side view showing a modified example of the magnetic writing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Device body 5 ... Magnetic reading device 6 ... Magnetic writing device 7 ... Cutter device 8 ... Printing device 9 ... Paper roll 40 ... Magnetic head 42 ... Platen roller 43 ... Support arm 44 ... Axis 46 ... Butt roller 48 ... Tension spring 50 ... Adjusting mechanism 52 ... Screw 54 ... Adjusting member 60 ... Adjusting screw

Claims (10)

[Claims] 1. A magnetic head for writing magnetic information on a recording medium, a platen roller disposed so as to face the magnetic head and contacting the recording medium with the magnetic head at a predetermined pressure, and the platen roller. A support means supported so as to be able to come into contact with and separate from the magnetic head, and a gap between the magnetic head and the platen roller,
An adjusting mechanism for adjusting to a predetermined value via the supporting means, and a thermal expansion coefficient which is provided between the supporting means and the adjusting mechanism and is substantially equal to that of the platen roller,
A writing device, comprising: a holding member that moves the platen roller via the support means according to contraction and expansion of the platen roller, and holds the gap at the predetermined value. 2. A magnetic head for writing magnetic information on a recording medium, a platen roller which is arranged so as to face the magnetic head, and which brings the recording medium into contact with the magnetic head at a predetermined pressure, and supports the platen roller. In addition, a supporting member that is provided so as to be able to come into contact with and separate from the magnetic head, an abutting member that is attached to the supporting member, and the supporting member is moved through the abutting member, An adjusting mechanism for adjusting the gap between the head and the platen roller to a predetermined value, the abutting member has a thermal expansion coefficient substantially equal to that of the platen roller, the contraction of the platen roller, Writing that is characterized by contracting and expanding in response to expansion, moving the platen roller via the supporting means, and holding the gap at the predetermined value. Location. 3. A magnetic head for writing magnetic information on a recording medium, a platen roller arranged to face said magnetic head, and a platen roller rotatably provided around a pivot, said platen roller being provided on said magnetic head. A support arm supported so as to be able to come into contact with and separated from the support arm, an abutment member attached to the support arm and located on the opposite side of the platen roller with the pivot interposed, and the support arm is rotated via the abutment member. To move
An adjusting mechanism that adjusts a gap between the platen roller and the magnetic head; and a biasing force of the support arm in a direction in which the platen roller approaches the magnetic head so that the recording medium is applied to the magnetic head with a predetermined pressure. Urging means for bringing the abutting member into contact with each other and pressing the abutting member against the adjusting mechanism, the abutting member having a thermal expansion coefficient substantially equal to that of the platen roller, and depending on contraction and expansion of the platen roller. The writing device is characterized in that the gap is contracted and expanded, and the support arm is rotated to hold the gap at the predetermined value. 4. The writing device according to claim 3, wherein the abutting member is formed in a roller shape rotatably attached to the support arm. 5. The adjusting mechanism has an abutting end that abuts against the abutting member and is provided so as to be able to come into contact with and separate from the abutting member, and the adjusting member is predetermined. 5. The writing device according to claim 3, further comprising a screw that is fixed at the position. 6. The adjusting mechanism comprises an adjusting screw which has an abutting end abutting against the abutting member and is screwed in a direction of coming into contact with and abutting from the abutting member. The writing device according to claim 3, wherein the writing device is a writing device. 7. The support arm is formed in a substantially L shape,
8. The writing device according to claim 3, wherein the corner portion is rotatably supported by a pivot, and the platen roller and the abutting member are attached to both end portions, respectively. 8. An apparatus main body having an input port, a paper feed unit arranged in the apparatus main body for supplying tickets of a predetermined size, and a printing apparatus for printing predetermined information on the supplied tickets. A writing device for writing magnetic information on the tickets printed with predetermined information, and a conveying means for issuing the supplied tickets from the insertion slot through the printing device and the writing device. The apparatus includes a magnetic head for writing magnetic information on the tickets, a platen roller arranged so as to face the magnetic head and contacting the tickets with a predetermined pressure to the magnetic head, and a platen roller for the magnetic head. A supporting means supported so as to be able to come into contact with and separate from the head and a gap between the magnetic head and the platen roller
An adjusting mechanism for adjusting to a predetermined value via the supporting means, and a thermal expansion coefficient which is provided between the supporting means and the adjusting mechanism and is substantially equal to that of the platen roller,
A ticket issuing device, comprising: a holding member that moves the platen roller via the supporting means according to contraction and expansion of the platen roller, and holds the gap at the predetermined value. 9. An apparatus main body having an insertion slot, a paper feed unit arranged in the apparatus main body for supplying tickets of a predetermined size, and a printing apparatus for printing predetermined information on the supplied tickets. A writing device for writing magnetic information on the tickets printed with predetermined information, and a conveying means for issuing the supplied tickets from the insertion slot through the printing device and the writing device. The apparatus supports a magnetic head that writes magnetic information on the tickets, a platen roller that is disposed so as to face the magnetic head and that contacts the recording medium with the magnetic head at a predetermined pressure, and a platen roller. In addition, a supporting member provided so as to be able to come into contact with and separate from the magnetic head, an abutting member attached to the supporting member, and the supporting member via the abutting member. An adjusting mechanism for moving and adjusting the gap between the magnetic head and the platen roller to a predetermined value, the abutting member having a thermal expansion coefficient substantially equal to that of the platen roller, A writing device, which contracts and expands in response to contraction and expansion of the platen roller, moves the platen roller via the support means, and holds the gap at the predetermined value. 10. An apparatus main body having an input port, a paper feeding means arranged in the apparatus main body for supplying tickets of a predetermined size, and a printing apparatus for printing predetermined information on the supplied tickets. A writing device for writing magnetic information on the tickets printed with predetermined information, and a conveying means for issuing the supplied tickets from the insertion slot through the printing device and the writing device. The apparatus is provided with a magnetic head for writing magnetic information on the tickets, a platen roller arranged so as to face the magnetic head, and rotatable about a pivot, and the platen roller is provided with respect to the magnetic head. A support arm supported so as to be able to come into contact with and separate from the platen roller, an abutment member attached to the support arm and located on the opposite side of the platen roller with the pivot interposed, and the abutment member. To rotate the support arm,
An adjusting mechanism that adjusts the gap between the platen roller and the magnetic head, and the support arm is urged in a direction in which the platen roller approaches the magnetic head, and the tickets are applied to the magnetic head with a predetermined pressure. Urging means for bringing the abutting member into contact with each other and pressing the abutting member against the adjusting mechanism, the abutting member having a thermal expansion coefficient substantially equal to that of the platen roller, and depending on contraction and expansion of the platen roller. The ticket issuing device is characterized by contracting and expanding, rotating the support arm, and holding the gap at the predetermined value.