JP3375859B2 - Card transport mechanism - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a card transport mechanism for transporting a card transported through a card passage while press-contacting the print head with a platen roller when printing the card. More specifically, the present invention relates to a card feeding mechanism suitable for carrying a card formed by cutting a roll paper for thermal printing.

[0002]

2. Description of the Related Art In a card issuing machine for issuing cards at amusement stores such as pachinko parlors, a roll paper having a thermal side on the front side and a magnetic side on the back side is cut to a predetermined length, and magnetic data is recorded on the magnetic side. Some cards are printed with a thermal number printed on the thermal surface to issue a card. Such a card issuing machine is provided with a printing unit 200 as shown in FIGS. 32 and 33 in order to perform thermal printing on the thermal surface of the card.

The printing section 200 comprises a thermal head 202 having a heating element 201, a platen roller 204 which can be pressed against the heating element 201 with a card passage 203 interposed therebetween, and a guide on the thermal head 202 side of the card passage 203. A head side guide 205 and a roller side guide 206 that constitutes a guide on the platen roller 204 side of the card passage 203 are provided. The heating element 201 is inserted from the opening 205a of the head side guide 205 to the card passage 20.
Exposed to 3. Here, the thermal head 202 needs to be replaced when a predetermined amount of printing is performed, so
The opening portion 205a is formed to be large enough to allow a gap to be formed between the heating portion 202 and the opening portion 205a so that the opening portion 02a can be easily attached to and removed from the opening portion 205a.

The platen roller 204 is a card 20.
7 is provided over the entire width direction. For this reason,
The roller side guide 206 is separated into an upstream side and a downstream side in the card traveling direction with the platen roller 204 interposed therebetween.

When printing on the card 207, the card 2
07 is a head side guide 205 and a roller side guide 206
Between the heat generating part 201 and the platen roller 20.
Located between 4 and. Then, the platen roller 204
Is pressed against the heat generating portion 201 and rotated. As a result, the card 207 is conveyed while being pressed by the heat generating unit 201, and thermal printing is performed.

[0006]

However, in the above-described card transport mechanism in the printing section 200, since there is a gap between the opening 205a of the head side guide 205 and the heat generating section 201, there is a gap between the heat generating section 201 and the opening 205a. In some cases, the height of the heat generating portion 201 protruding into the card passage 203 may become high due to the inability to make the positional relationship constant, and in this case, for example, if the card 207 having a curl of roll paper remains is run, There is a possibility that the tip of the card may be caught on the side of the tip of the heat generating section 201 to cause a card jam, or the tip of the card 207 may be damaged or broken. Further, since the roller side guide 206 is separated into an upstream side and a downstream side in the card traveling direction with the platen roller 204 interposed therebetween, when the card 207 having a curl is run, the leading end of the card 207 moves to the platen roller 204. 33, there is a risk that the end portion 206a of the roller side guide 206 on the downstream side may be caught and a card jam may occur or the leading end portion of the card 207 may be damaged or broken as shown by the chain double-dashed line in FIG.

[0007] In particular, the card 207 formed by cutting the roll paper may have a curling habit, and the card 207 may have a curling habit in the middle of the card transport path having a bent portion. In these cases card 207
Since the front end of the sheet faces the thermal head 202 side or the platen roller 204 side, it is easy to get caught in the heat generating portion 201 or the end portion 206a of the roller side guide 206. Further, the hardness of the card 207 may change due to the influence of temperature and humidity, so that the card 207 may be easily caught by the heat generating portion 201 or the end portion 206a of the roller side guide 206.

Further, when a defect such as a printing error is found in the printed card 207, the card 207 may be sent back. At this time, if the tip of the card 207 in the backward feeding direction is curled, a card jam is generated or the card 207 is caught by the end 206b of the roller side guide 206 that has passed over the heat generating portion 201 and the platen roller 204, as described above. May damage the tip of the.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a card transport mechanism which does not catch a curled card in a printing section.

[0010]

In order to achieve such an object, a card transport mechanism according to a first aspect of the present invention is such that when a card conveyed in a card passage is printed by the print head, the card is pressed against the print head by a platen roller. In a card transport mechanism that transports while forming a card passage by contacting the print head in the front-back direction of the card running direction, and a head card guide that exposes only the curved surface portion of the tip of the heat generating portion of the print head to the card passage, A full width guide formed over the entire head width of the print head formed on the head card guide, a plurality of protruding guides protruding from the full width guide in the card running direction, and a card provided on the head card guide in the front-back direction of the card running direction. Head side guide forming a passage and protruding from the head side guide toward the head part card guide So that and a plurality of guide projections positioned to each other sandwiching alternately both located between the projecting guide.

Therefore, when printing the card, the card is guided to the print head by the head side guide.
The tip of the card is guided by the protruding guide of the head-side card guide from the guide protrusion of the head-side guide on the upstream side in the card traveling direction to reach the full-width guide. Further, the tip of the card goes from the full width guide to the full width guide on the opposite side through the heat generating portion. At this time, in the head card guide, only the curved portion of the tip of the heat generating portion of the print head is exposed in the card passage, so the tip of the card is guided without being caught by the tip of the heat generating portion. Then, the tip of the card is guided by the guide protrusion of the head-side guide from the protrusion guide of the head-side card guide on the downstream side to reach the head-side guide.

Further, since the head card guide is a separate member that is connected to the front and rear head side guides by the engagement of the protruding guide and the guide protrusion, it can be removed from the card passage. For this reason, the head card guide is integrated with the print head and can be attached and detached between the front and rear head side guides. Only a portion can be exposed in the card passage.

Further, in the card transport mechanism of claim 2,
The projecting guide has an inclined surface formed at the tip end so as to incline the tip side away from the card passage, and the guide projection has an inclination surface formed at the tip end so as to incline the tip side away from the card passage. The tip of the inclined surface of the protruding guide is farther from the card passage than the inclined surface of the guide protrusion located in the card width direction of the tip, and the tip of the inclined surface of the guide protrusion is the tip. It is arranged so as to be farther from the card passage than the inclined surface of the protruding guide located in the card width direction.

Therefore, when the tip of the card is conveyed from the guide protrusion of the head side guide to the protruding guide of the full width guide, it rides on the inclined surface of the protruding guide while being guided along the inclined surface of the guide protrusion. Will be done. For this reason, the tip of the card is directly guided from the inclined surface of the guide protrusion to the inclined surface of the protruding guide, so that the card is prevented from being caught by the end portion of the card guide.

When the leading edge of the card is conveyed over the heat generating portion from the protruding guide of the full width guide to the guide protrusion of the head side guide, the guide protrusion is inclined while being guided along the inclined surface of the protrusion guide. You will be guided on the surface. Therefore, the tip of the card is directly guided from the inclined surface of the protruding guide to the inclined surface of the guide protrusion, so that the card is prevented from being caught by the end portion of the head-side guide.

According to another aspect of the card transport mechanism of the present invention, a small diameter portion formed on a part of the platen roller, a roller side guide that is provided in the front and rear direction of the platen roller in the card running direction to form a card passage, and a roller side. An extension guide that projects from the guide toward the platen roller and is located between the small diameter portion and the print head to form a card path is provided.

Therefore, when printing the card, the card is guided to the platen roller by the roller side guide. Then, when the tip of the card reaches the vicinity of the platen roller, the portion of the card facing the small diameter portion is guided by the extension guide. At this time, the portion of the card that faces the portion other than the small diameter portion is pressed against the heat generating portion by the platen roller and is printed.

Further, the tip of the card is guided from the extension guide on the upstream side through the extension guide on the downstream side to the roller side guide on the downstream side. Therefore, the leading end of the card is guided by the downstream extension guide immediately after passing between the platen roller and the heat generating portion, so that it is prevented from being caught by the end of the downstream roller side guide.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION The structure of the present invention will be described below in detail based on an example of an embodiment shown in the drawings. 1 to 30 show an example of an embodiment of a card issuing machine adopting the card feeding mechanism of the present invention. This card issuing machine 1 is used for issuing cards at amusement stores such as pachinko parlors, and the roll paper 2 has a thermal side on the front side and a magnetic side on the back side.
Is cut into a predetermined length, magnetic data is recorded on the magnetic surface, and characters and the like are thermally printed on the thermal surface to issue the card 3.

As shown in FIG. 2, the card issuing machine 1 includes a roll paper mounting mechanism 4 for holding the roll paper 2 and a first loading device for loading and transporting the roll paper 2 held by the mounting mechanism 4. A mechanism 5, a loop mechanism 6 that forms a slack of the roll paper 2 being conveyed, a second take-in mechanism 7 that takes in the roll paper 2 from the loop mechanism 6 and conveys it, and a card 3 that cuts the roll paper 2 A cutting mechanism 8, a card waiting section 9 for waiting the card 3, a card feeding mechanism 10 for carrying the card 3 while changing the direction of the card 3 at a right angle, and a write read for recording and reproducing magnetic data on the magnetic surface of the card 3. Part 11
And a printing unit 12 for printing on the thermal surface of the card 3,
There is an abnormality in the card transport mechanism 162 according to the present invention that transports the card in the printing unit 12, the card issuing unit 13 that transports the completed card 3 to the outside, and the recording and reproducing of magnetic data to and from the card 3. And a storage mechanism 14 that collects and stores the card 3 when the card 3 is stored.

As shown in FIGS. 2 and 3, each part of the card issuing machine 1 is housed in a thin rectangular casing 15. The roll paper 2 is accommodated in the lower part of the casing 15. A base plate 16 is fixed to the upper part of the casing 15. The base plate 16 includes a first take-in mechanism 5, a loop mechanism 6, a second take-in mechanism 7, a cutting mechanism 8, a card waiting section 9, a card feeding mechanism 10, a write reading section 11, a printing section 12, and a card carrying section. Mechanism 16
2 and the card issuing unit 13 are sequentially arranged along the conveyance path of the roll paper 2, and the storage mechanism 14 is continuously provided to the card feeding mechanism 10. Further, the card issuing port 17 of the card issuing unit 13 is exposed at the upper part of the narrow side surface of the casing 15.

As shown in FIGS. 9 and 10, the second
The path of the roll paper 2 from the take-in mechanism 7 to the cut mechanism 8 is composed of a first guide 26 and a second guide 27 facing each other. The card passage is a vertical first linear conveying path 159 from the cutting mechanism 8 to the card feeding mechanism 10,
It is composed of a horizontal second linear conveying path 160 from the card feeding mechanism 10 to the printing section 12, and a bent portion 98 located between the first linear conveying path 159 and the second linear conveying path 160. The bent portion 98 has an arc shape and turns the first straight conveying path 159 and the second straight conveying path 160 by 90 degrees. As a result, the card issuing machine 1 can be downsized. Further, the first linear transport path 159 is composed of a third guide 28 and a fourth guide 29 facing each other. The second linear transport path 160 is composed of a fourth guide 29 and a fifth guide 30 facing each other. Bend 9
8 is composed of a fourth guide 29, a third guide 28 and a fifth guide 30. In the present embodiment, the bent portion 98 is supposed to turn the card 3 by 90 degrees, but the bending portion 98 is not limited to this, and may have another bending angle depending on the arrangement of the card passage in the card issuing machine 1.

As shown in FIGS. 2 and 4, a door 18 is provided above the casing 15. The door 18 has hinges 19 and 19 whose rotation center is the vertical side opposite to the printing unit 12 and the card issuing unit 13 of the casing 15.
It is attached so that it can be opened and closed. This door 18
Covers the upper part of the casing 15 excluding the printing unit 12 and the card issuing unit 13. The printing unit 12 of the door 18
A door protrusion 18b is formed in the vicinity of.

As shown in FIG. 10, various sensors are attached to the door 18 and project to the back side of the door 18. The sensors attached to the door 18 are a mounting sensor 20, a cut positioning sensor 21, a cut length sensor 22, a write timing sensor 23, and a print timing sensor 24, in this order from the upstream side of the conveyance path for the roll paper 2, and the reject. Reject sensor 25 in the passage
Is attached. Each of the sensors 20 to 25 is an optical sensor having a light emitting section and a light receiving section. Then, when the door 18 is closed, the light emitting portions and the light receiving portions of the sensors 20 to 25 face each other through the window holes of the guides 26 to 30 and sandwich the card passage. Each of the sensors 20 to 25 detects that the roll paper 2 or the card 3 is located between the light emitting portion and the light receiving portion. Further, a sensor cover 31 that covers the sensors 20 to 25 is attached to the upper portion of the front side of the door 18.

Further, a door sensor 40 for detecting opening / closing of the door 18 is attached to a substantially central portion of the inner surface of the door 18. Base plate 16 facing the door sensor 40
In addition, as shown in FIG. 10 and FIG.
Is attached. Therefore, when the door 18 is open, it is detected that the sensor protrusion 153 does not exist between the door sensors 40, so that the card issuing machine 1 cannot be operated. A reinforcing rib 18a is formed at the open end of the door 18 and doubles as an opening / closing handle. A door keeper (not shown) that keeps the door 18 closed is provided on the inner surface of the door.

When the door 18 is closed, one side portion in the width direction of the card passage is regulated by the inner side surface of the door 18, and the other side portion in the width direction of the card passage is regulated by the base plate 16. There is. Then, the card 3 is conveyed between the inner surface of the door 18 and the surface of the base plate 16. Further, a cover plate 32 as shown in FIGS. 4 and 22 is attached to the upper side of the door 18. The cover plate 32 covers and hides the printing unit 12 and the card issuing unit 13.

The mounting mechanism 4 for the roll paper 2 is shown in FIGS.
As shown in FIG. 3, a rotatable spindle 34 into which a roll core 33, which is a central hole of the rolled roll paper 2, is fitted.
And the fixed shaft 3 that rotatably supports the spindle 34.
5 and a roll paper attachment member 36 for fixing the roll paper 2 to the spindle 34. Roll paper mounting member 36
Includes a pressing portion 37 located on the side of the roll core 33, and a held portion 38 that is inserted and held in the fixed shaft 35. Here, by fitting the roll core 33 to the spindle 34, the roll paper 2 is rotatably supported.

The fixed shaft 35 is provided with an elastically biased locking portion 39 that locks with the inserted held portion 38.
The fixed shaft 35 has a substantially cylindrical shape. The base end surface of the fixed shaft 35 is fixed to the frame of the casing 15 by screwing. A spindle 34 is rotatably fitted on the outer periphery of the fixed shaft 35. A C-shaped ring 41 is fitted to the tip of the fixed shaft 35 to prevent the spindle 34 from falling off the fixed shaft 35.

The engaging portion 39 has two through holes 4 located on one diameter line formed near the central portion of the fixed shaft 35.
2, 42, a ball 43, which is, for example, a steel ball slidably accommodated in each through hole 42, and a spring 44 formed of a leaf spring screwed to the outside of each through hole 42. The spring 44 is screwed to the D-cut surface of the fixed shaft 35 so that the free end closes the outside of each through hole 42. here,
Since the ball 43 is used, the held portion 38 can smoothly rotate with respect to the fixed shaft 35. Further, since steel balls are used as the balls 43, the life of rotation can be extended.

In the present embodiment, the two through holes 42 are arranged on a straight line, but the present invention is not limited to this and may be arranged at an appropriate angle such as 90 degrees. Further, although two sets of the through hole 42, the ball 43, and the spring 44 are provided in the present embodiment, the present invention is not limited to this, and one set or three or more sets may be provided. Further, in the present embodiment, the spring 44 is a leaf spring, but the present invention is not limited to this, and may be a compression coil spring that presses the ball 43 toward the center side of the fixed shaft 35 as shown in FIG. 7, for example. In this case, a contact plate 154 for pressing the outer peripheral side of the spring 44 is attached to the D-cut surface of the fixed shaft 35. Further, although the balls 43 are steel balls in the present embodiment, the present invention is not limited to this, and may be plastic balls or other materials. in this case,
It is possible to change the click feeling and the operation feeling when attaching and detaching the held portion 38. That is, as in this embodiment, the ball 43
When a steel ball is used, a clicked and hard click feeling can be obtained, whereas when a plastic ball is used for the ball 43, a soft operation feeling can be obtained.

A flange portion 34a is formed at the end of the spindle 34 on the frame side so as to project to the outer peripheral side. Then, the roll core 33 fitted to the spindle 34 abuts and is fixed to the flange portion 34a. Here, the length of the surface of the flange 34a of the spindle 34, which is in contact with the roll core 33, and the tip end surface of the spindle 34, is made slightly shorter than the width of the roll core 33. For this reason, the pressing portion 37 of the roll paper mounting member 36 mounted on the fixed shaft 35 abuts the roll core 33, and at the same time forms a slight gap with respect to the spindle 34. As a result, the pressing portion 37 causes the roll core 33 to move.
Can be pressed against the flange 34a without a gap.

The held portion 38 is the central hole 35 of the fixed shaft 35.
The central axis is inserted in a. The end of the held portion 38 in the insertion direction has a conical shape. Then, the held portion 3
8 is formed with an engagement recess 45 into which the balls 43, 43, which are the locking portions 39, are fitted and locked. Engagement recess 45
Is formed in an annular shape near the tip of the held portion 38 in the insertion direction. Further, the step on the tip side in the insertion direction of the engaging recessed portion 45 has a pressing surface 45a whose outer peripheral side is inclined toward the tip side.

Further, the pressing portion 37 is a disc whose outer diameter is slightly larger than the inner diameter of the roll core 33 of the roll paper 2. In this embodiment, the pressing portion 37 has an outer diameter of the roll core 33.
Although the disk is slightly larger than the inner diameter of the roll paper 2, it is not limited to this. For example, the disk may be larger than the entire outer diameter of the roll paper 2, or as shown in FIG. It can be a cross-shaped plate having a book arm. In these cases, when the center and the outer peripheral portion of the rolled roll paper 2 are axially displaced to form a conical shape, or the rolled roll paper 2 in a cylindrical shape is misaligned and the side surface is uneven, Since the side surface of the roll paper 2 can be rotated while being pressed by the pressing portion 37, the roll paper 2 can be stably supplied.

A knob 46 is screwed to the end surface of the held portion 38 on the opposite side to the inserting direction with the pressing portion 37 interposed therebetween. Here, the formation position of the engaging recessed portion 45 in the held portion 38 is the balls 43, 4 when the held portion 38 is inserted into the fixed shaft 35 and the pressing portion 37 abuts on the roll core 33.
The position 3 presses the pressing surface 45a of the engaging recess 45. In the present embodiment, the held portion 38, the pressing portion 37, and the knob 46 of the roll paper mounting member 36 are separate members, but the present invention is not limited to this, and the whole may be integrally formed.

A held portion 38 is provided in the central hole 35a of the fixed shaft 35.
Is inserted, the tip end of the held portion 38 is moved to the balls 43, 4
3 is moved to the outer peripheral side against the springs 44, 44. Then, the held portion 38 is inserted until the pressing portion 37 contacts the roll core 33. As a result, the balls 43, 43 are pressed toward the center by the springs 44, 44 and fit into the engaging recesses 45. Here, the ball 43 comes into contact with the pressing surface 45 a of the engaging recess 45. Since the pressing surface 45a has the outer peripheral side inclined to the insertion direction side, the held portion 38 is biased in the insertion direction. Therefore, it is possible to prevent rattling of the roll core 33 after the roll paper mounting member 36 is mounted on the fixed shaft 35.

The loaded roll paper 2 rotates integrally with the spindle 34 and the roll paper mounting member 36 with respect to the fixed shaft 35. Further, when the knob 46 is pulled, the pressing surface 45a of the engaging recess 45 moves the balls 43, 43 against the springs 44, 44. Then, the held portion 3
8 can be extracted from the fixed shaft 35.

Roll paper mounting mechanism 4 and first take-in roller 4
7, the mounting sensor 2 attached to the door 18
0 is placed. The mounting sensor 20 can detect whether the roll paper 2 is mounted, or whether the roll paper 2 has been used up and is lost.

Then, the roll paper 2 taken out from the roll paper mounting mechanism 4 is drawn into the first take-in mechanism 5.
As shown in FIG. 9, the first take-in mechanism 5 includes a first take-in roller 47, a drive motor 48 including a DC motor for rotating the first take-in roller 47, and a roll on the first take-in roller 47. A tension roller 49 for pressing the paper 2 is provided. The first take-in roller 47 is rotatably supported by the first side plate 50 and the base plate 16. The first take-in roller 47 is connected to the drive motor 48 by the gear train 156 and rotates. Tension roller 49 is holder 5
It is rotatably supported by 1. The holder 51 is swingably supported by the second side plate 52 and the base plate 16. Further, the holder 51 uses a spring (not shown) to connect the tension roller 49 to the first take-in roller 47.
Is urged to.

As shown in FIGS. 9 to 11, the loop mechanism 6 includes a loop roller 53 and a loop lever 54 that rotatably supports the loop roller 53. The base end portion of the loop lever 54 includes the second side plate 52 and the base plate 1.
It is rotatably supported by 6 and 6. At this supporting position, the loop lever 54 extends over the shortest path of the roll paper 2 between the first take-in roller 47 and the second take-in roller 55 (shown by the one-dot chain line in FIG. 10). And the loop lever 5
A guide protrusion 56 is formed on the back side of the No. 4. Also,
The base plate 16 facing the guide protrusion 56 has a structure shown in FIG.
Also, as shown in FIG. 13, an arc-shaped slide hole 57 is formed. The slide hole 57 is formed at a position where the loop lever 54 can rotate within a range in which the loop lever 54 is inclined downward by about 45 degrees from a substantially horizontal state.

Further, a loop sensor 58 for detecting the presence of the guide protrusion 56 is attached to the bottom of the slide hole 57 on the back side of the base plate 16. Therefore, the guide protrusion 56 is detected by the loop sensor 58 when the loop lever 54 is in the lowest position. Further, when the loop lever 54 is rotated upward, the guide protrusion 56 is disengaged from the loop sensor 58 and is not detected.

As a result, when the roll paper 2 forms a loop 59 having a sufficient length between the first take-in mechanism 5 and the second take-in mechanism 7, as shown in FIG. 5
3 pushes down the roll paper 2 under its own weight and the loop lever 54 is in the lowest position, so that the guide protrusion 56 is detected by the loop sensor 58. When the loop length of the roll paper 2 is short between the first loading mechanism 5 and the second loading mechanism 7, the roll paper 2 pushes up the loop roller 53 and the loop lever 54 rotates upward ( (Shown by a chain double-dashed line in the figure), the guide protrusion 56 is no longer detected by the loop sensor 58. The non-detection of the loop sensor 58 activates the first take-in mechanism 5 so that the loop 59 of the roll paper 2 has a sufficient length. According to the loop mechanism 6, the loop lever 54 extends over the shortest path between the first take-in roller 47 and the second take-in roller 55. It is possible to prevent the route from being cut short.

Further, although the loop lever 54 is rotatable in the present embodiment, the present invention is not limited to this and FIG.
The loop lever 54 may be slidable up and down as shown in FIG. In this case as well, the loop lever 54 ′ is set over the shortest path of the roll paper 2 between the first take-in roller 47 and the second take-in roller 55, so that the loop roller 53 is left behind when the roll paper 2 is mounted. Can be prevented.

As shown in FIG. 9, the second take-in mechanism 7 includes a second take-in roller 55, a drive motor 60 composed of a stepping motor for rotating the second take-in roller 55, and a second take-in roller. 55, and a tension roller 61 for pressing the roll paper 2. The second take-in roller 55 is the second
It is rotatably supported by the side plate 52 and the base plate 16. The second take-in roller 55 and the drive motor 60 are
Motor pulley 62, toothed belt 63, and roller pulley 64
Connected by and. The tension roller 61 is rotatably supported by a holder 65. This holder 6
5 is swingably supported by the third side plate 66 and the base plate 16. Further, the holder 65 uses the biasing spring 67, which is a torsion coil spring, for the tension roller 61.
To the second take-in roller 55.

A cut positioning sensor 21 attached to the door 18 is arranged between the second take-in roller 55 and the cutting mechanism 8. The cut positioning sensor 21 is
By detecting the holes formed in the roll paper 2, the roll paper 2 is conveyed to the cutting mechanism 8 by the length of one card.

Further, a cut length sensor 22 attached to the door 18 is arranged downstream of the card waiting section 9. When the tip of the roll paper 2 is detected by the cut length sensor 22, the cutting mechanism 8 is operated to cut the roll paper 2 to produce the card 3.

The cutting mechanism 8 is provided with a rotary cutter 68 and a drive motor 69, as shown in FIGS. 9 and 13. As shown in FIG. 14, the rotary cutter 68 includes a fixed blade 71 fixed to a bracket 70 and a fixed blade 7
The rotary blade 72 is provided so as to be parallel to and rotatable with the cutter blade 1, and the cutter arm 73 fixed to one end of the rotary blade 72. The rotary blade 72 has a D-shaped cross section by chamfering a part of a cylinder. And the chamfered surface 72a of the rotary blade 72
The roll paper 2 is passed between the fixed blade 71 and one side edge of the fixed blade 71, and the rotary blade 72 is rotated to cut the roll paper 2 by the shearing force between the roll blade 2 and the fixed blade 71. The cutter arm 73 is formed with a longitudinal groove 73a. The cam roller 75 on the cam ring 74 rotated by the drive motor 69 is put in the groove 73a. Therefore, the rotation of the drive motor 69 causes the rotary blade 72 to rotate via the cam ring 74, the cam roller 75, and the cutter arm 73 to cut the roll paper 2. Then, the roll paper 2 becomes a card 3 by being cut.

A cutter sensor 76 for detecting the position of the cutter arm 73 is attached to the back side of the base plate 16. With this cutter sensor 76, the cutter arm 73
By detecting the position of, it is possible to detect whether or not the rotary blade 72 is at the home position.

The card waiting section 9 holds the card 3 and waits until the host issues a command to carry the card 3. This card waiting section 9
As shown in FIGS. 9 and 10, a push plate 77, a standby conveyance roller 78, and a standby tension roller 79 are provided. The push plate 77 is a U-shaped plate extending along the third guide 28, and is exposed to the card passage through an opening formed in the third guide 28. And
The push plate 77 is biased toward the card passage by a biasing spring 80 formed of a compression coil spring. The biasing spring 80 is supported by a bracket 81 screwed to the base plate 16. As a result, the card 3 is sandwiched while being urged between the push plate 77 and the fourth guide 29, so that the card 3 cannot move and stands by.

The standby conveyance roller 78 and the standby tension roller 79 face each other with the card passage interposed therebetween. As shown in FIG. 9, the standby conveyance roller 78 is rotatably supported by the fourth side plate 82 and the base plate 16. The standby conveyance roller 78 is connected to a conveyance motor 83, which is a DC motor, by a motor pulley 84, a drive belt 87, which is a toothed belt, a large conveyance pulley 85, a small conveyance pulley 86, and a toothed belt 88, which are rotated. Then, the standby tension roller 79, as shown in FIG.
It is possible to appear in and out of the card passage.

As shown in FIGS. 15 and 16, the standby tension roller 79 comprises two rollers, and the arm 90
It is rotatably supported by a pin 91 at the tip of the.
The arm 90 is rotatably supported by the fifth side plate 92 and the base plate 16 about a shaft 93. The arm 90 is biased by a biasing spring 94 composed of a torsion coil spring in a direction in which the standby tension roller 79 advances into the card path. The pin 91 is connected to an iron core 96 of a solenoid 89 via an intermediary lever 95. Therefore, the excitation of the solenoid 89 causes the arm 90 to rotate against the biasing spring 94. As a result, the standby tension roller 79 is retracted from the card passage.

When the solenoid 89 is energized and the standby tension roller 79 retracts from the card passage, the push plate 77 projects into the card passage to sandwich the card 3 between itself and the fourth guide 29 so that it cannot move and is in standby. Since the transport roller 78 idles, the card 3 is in a standby state. When the solenoid 89 is demagnetized and the standby tension roller 79 is projected into the card path by the biasing spring 94, the standby conveyance roller 78 holds the card 3 together with the standby tension roller 79 and conveys the card 3.

On the downstream side of the cut length sensor 22, there is formed a bent portion 98 which is continuous with the first straight conveying path 159 and bends at a right angle. The card feeding mechanism 1 is attached to the bent portion 98.
0 is provided. The card feeding mechanism 10 is configured such that the flexible card 3 is made to travel from the first linear conveyance path 159 to the second linear conveyance path 160 via the bending portion 98 having a predetermined angle. As shown in FIGS. 9 and 17 to 19, the card feeding mechanism 10 is arranged inside the bending portion 98 and the first driving roller 99 and the second driving roller 100 arranged outside the bending portion 98. A common roller 97 that can contact the first drive roller 99 and the second drive roller 100 at the same time, and a common roller 97 that is movably held and that is common to the first drive roller 99.
And a holding means 161 for urging the second drive roller 100 between them.

The first driving roller 99 is exposed in the card passage through the opening of the third guide 28. Second drive roller 100
Is exposed in the card passage from the opening of the fifth guide 30.
The common roller 97 is a tension roller that is exposed from the opening of the fourth guide 29 to the card passage and presses the first drive roller 99 and the second drive roller 100. The diameter of the common roller 97 is so small that the card 3 does not have an adverse effect such as being curled when the card 3 is conveyed through the bent portion 98 and caught in the printing portion 12 or the like. Therefore, the card feeding mechanism 10 can be downsized.

Further, the contact point between the first driving roller 99 and the common roller 97 is the bent portion 98 and the first linear conveying path 15.
It is slightly on the bent portion 98 side from the boundary of 9. Also, the second
The contact point between the drive roller 100 and the common roller 97 is located at the boundary between the bent portion 98 and the second linear transport path 160.

The holding means 161 has the second driving roller 100 and the common roller 97 when the card 3 is sandwiched only between the first driving roller 99 and the common roller 97.
A gap G is formed between the second drive roller 100 and the second drive roller 100.
The common roller 97 is movably held so as to form a gap between the first drive roller 99 and the common roller 97 when the card 3 is sandwiched only between the common roller 97 and the common roller 97. The holding means 161 includes a tension lever 101 that rotatably supports the common roller 97 and is slidable with respect to the base plate 16, and a first guide shaft 106 that guides the tension lever 101 in the sliding direction S. And the second
A guide shaft 108, an adjusting plate 104 for finely adjusting the sliding direction S of the tension lever 101, and an urging spring 112 for urging the common roller 97 toward the drive rollers 99 and 100 are provided.

As shown in FIG. 19, the tension lever 101 is slidable from a midpoint T of a line connecting the rotation centers of the driving rollers 99 and 100 to a straight line D orthogonal to the line. At this time, the center distance L between the common roller 97 and the first drive roller 99 becomes equal to the center distance L between the common roller 97 and the second drive roller 100, and the center of the common roller 97 and the first drive center around the straight line D. An angle θ is formed between the line connecting the center of the roller 99 and the line connecting the center of the common roller 97 and the center of the second driving roller 100.

Each drive roller 9 of the tension lever 101
A roller shaft 102 that rotatably supports the common roller 97 is attached to the tip end portions on the 9 and 100 side. First
The guide shaft 106 penetrates the first hole 103 of the base plate 16 and the adjustment elongated hole 105 of the adjustment plate 104 and projects to the back side of the base plate 16. The second guide shaft 108 penetrates the second hole 107 of the base plate 16 and projects to the back side of the base plate 16. The first guide shaft 106 and the roller shaft 102 are coaxially positioned and screwed with a single bolt 109.

The first hole 103 is formed larger than the diameter of the first guide shaft 106. Therefore, the first guide shaft 1
06 is movable in each direction while being inserted in the first hole 103. Further, the adjustment elongated hole 105 of the adjusting plate 104 is an elongated hole along the sliding direction S of the tension lever 101 and has a width equal to the diameter of the first guide shaft 106. Therefore, the first guide shaft 106 moves in the sliding direction S while being guided by the adjustment elongated hole 105. Further, the adjusting plate 104 is provided with the fastening long holes 110, 110 along the direction orthogonal to the sliding direction S.
have. Then, by shifting the tension lever 101 in the line direction connecting the rotation centers of the drive rollers 99 and 100, that is, in the direction orthogonal to the sliding direction S, the pad pressure of the common roller 97 to the drive rollers 99 and 100 is equalized. Fine adjustment of the direction of the tension lever 101 is performed, and then the attachment long holes 110, 110 are attached to the base plate 16
It is screwed to the back side of.

Here, the fixing position of the adjusting plate 104 is
As shown in FIG. 19, the center distance L between the common roller 97 and the first driving roller 99 is equal to the center distance L between the common roller 97 and the second driving roller 100, and the sliding direction S of the tension lever 101 is extended. The line connecting the center of the common roller 97 and the center of the first driving roller 99 with respect to the line and the line connecting the center of the common roller 97 and the center of the second driving roller 100 form an equal angle θ. ing.

As shown in FIG. 18, the second hole 107 is a long hole along the sliding direction S of the tension lever 101 and has a width equivalent to the diameter of the second guide shaft 108. Therefore, the second guide shaft 108 is guided by the second hole 107 and moves in the sliding direction S. Then, the first guide shaft 106
Is guided by the adjustment elongated hole 105 and the second guide shaft 108 is guided by the second hole 107, so that the tension lever 101 slides in the sliding direction S. Here, the second hole 107 and the second guide shaft 108 are arranged at a sufficient distance from the adjustment elongated hole 105 and the first guide shaft 106. Therefore, the sliding direction S of the tension lever 101 can be prevented from deviating due to an assembly error between the guide shafts 106 and 108 and the holes 105 and 107.

In this embodiment, the position of the first guide shaft 106 can be adjusted by the adjusting plate 104 in the direction orthogonal to the sliding direction S, and the second guide shaft 108 cannot be adjusted in the direction orthogonal to the sliding direction S. However, the present invention is not limited to this, and the second guide shaft 108 is supported by the adjusting plate 104 so that the second guide shaft 108 can be adjusted in the direction orthogonal to the sliding direction S and the first hole 103 is arranged along the sliding direction S. As a long hole, the first guide shaft 106 may not be adjustable in the direction orthogonal to the sliding direction S. Further, in the present embodiment, the position of the first guide shaft 106 can be adjusted by the adjusting plate 104, but it is not limited to using the adjusting plate 104 and, for example, the first guide shaft 106 without using the adjusting plate 104. As an eccentric shaft rotatable with respect to the tension lever 101,
The tension lever 10 is rotated by the rotation of the first guide shaft 106.
The sliding direction S of 1 may be finely adjusted.

Further, the spring hook shaft 1 is provided between the first guide shaft 106 and the second guide shaft 108 on the back side of the base plate 16.
11 is fixed. An urging spring 112 formed of a tension coil spring is stretched over the spring hanging shaft 111 and the second guide shaft 108. Therefore, the tension lever 101 moves the common roller 97 to
It is urged in the direction of contacting 9,100. Here, each of the corner conveying rollers 99 and 100 has a tension lever 101.
The cornering rollers 99 and 100 equally divide the urging force from the common roller 97 because they are arranged at an angle θ with respect to the sliding direction S. In addition, reference numeral 1 in the drawing
The elongated hole 13 is provided to avoid interference with a portion of the spring hook shaft 111 that slightly protrudes to the front side of the base plate 16.

The first drive roller 99 is rotatably supported by the fourth side plate 82 and the base plate 16 as shown in FIG. The first drive roller 99 is connected to the conveyance motor 83 by a motor pulley 84, a drive belt 87, a large conveyance pulley 85, a small conveyance pulley 86, and a toothed belt 88, and is rotated. Further, the second drive roller 100 is
It is rotatably supported by the sixth side plate 114 and the base plate 16. The second drive roller 100 includes the transport motor 83.
The motor pulley 84, the drive belt 87, and the large transport pulley 8
5, the reproducing section conveying roller 115 and the toothed belt 116 are connected and rotated.

By the way, as shown in FIG. 9 and FIG.
The downstream end of the third guide 28 is located between the first drive roller 99 and the second drive roller 100. And the fourth
The guide 29 is bent in an arc shape at a right angle along the common roller 97 and continues to the printing portion 12. Further, the fifth guide 30 continues from the storage mechanism 14 to the printing unit 12 via the second drive roller 100.

Here, from the storage mechanism 14 to the third guide 28.
The selector 117 is provided up to the downstream end of the selector. The selector 117 is a flat plate-shaped leaf spring as shown in FIG. 31, and has an end on the side of the storage mechanism 14, that is, an upper end 117a.
Is bent downward at a right angle and is screwed to the reject stacker 121. The opposite end of the selector 117, that is, the lower end 117b is slightly bent upward at the downstream end of the third guide 28 and is located on the card conveying surface of the fourth guide 29. In addition, in FIG. 31, reference numeral 117c is an opening where the reject conveyance roller 118 is exposed in the card passage.

The selector 117 is normally located downward by spring pressure and closes the card passage. And card 3
Is conveyed in the forward direction, the lower end portion 117b of the selector 117 is pushed up and passes through the bent portion 98. When the card 3 is conveyed in the reverse direction from the write / read section 11, the card 3 is guided upward by the lower end 117b of the selector 117 and is not taken into the first drive roller 99 and the common roller 97, and the storage mechanism is provided. It is transported to 14.

Further, in the card passage near the upper end 117a of the selector 117, the reject conveyance roller 118,
A tension roller 119 for pressing the card 3 is arranged to face the reject conveyance roller 118. The reject conveyance roller 118 is rotatably supported by the fourth side plate 82 and the base plate 16. The reject conveyance roller 118 is connected to the first drive roller 99 by a gear as shown in FIG. Therefore, for example, when the card 3 is conveyed in the opposite direction in FIGS. 9 and 10, the corner conveying rollers 99 and 100 are rotated in the right rotation direction, so that the reject conveyance roller 118 is rotated in the left rotation direction. 3 is conveyed to the storage mechanism 14. Further, the tension roller 119 is attached to the holder 12
It is rotatably supported by 0. This holder 120
Are rotatably supported by the sixth side plate 114 and the base plate 16. Further, the holder 120 urges the tension roller 119 to the reject conveyance roller 118 by a spring (not shown).

Here, as shown in FIG. 20, the positional relationship between the upper end of the selector 117 and the reject conveyance roller 118 and the tension roller 119 is as follows. When W is the force point, the upper end of the selector 117 is the fulcrum, and the reaction force R to the tension roller 119 is the action point, the ratio m: n of the distance m between the force point and the fulcrum and the distance n between the fulcrum and the action point.
Is about 4.5: 1. By setting this ratio, the front end side of the card 3 becomes sufficiently heavy just before being ejected, and the rear end of the card 3 is flipped up by the rotation of the tension roller 119, so that the ejected card 3 has the card front end 3a. Dropped downward. Therefore, it is possible to prevent the leading edge of the card 3 from jumping up when ejected, being caught on the upper part of the reject stacker 121, and being again drawn into the card path by the reject transport roller 118 and the tension roller 119.

A reject sensor 25 attached to the door 18 is arranged in the card path sandwiched by the transport roller 118 and the tension roller 119. The reject sensor 25 detects whether the ejected card 3 has passed the transport roller 118 and the tension roller 119, that is, whether the ejected card 3 has been ejected correctly.

The storage mechanism 14 is shown in FIGS. 10 and 20 to 2.
As shown in FIG. 1, a reject stacker 121 and a regulation guide 122 are provided. Reject stacker 121
Is a side plate portion 1 located below the upper end of the selector 117.
21a and the casing 1 from the lower end of the side plate 121a.
5 and a bottom plate portion 121b that is located up to the side portion. The bottom plate portion 121b is inclined with the side portion of the casing 15 facing downward.

The regulation guide 122 is provided on the extension line of the selector 117, that is, along the ejection direction of the card 3 and above the regulation guide 122. Therefore, as shown in FIG. 21, even when the card 3 is curved upward due to a curl when ejected by the reject conveyance roller 118, the curving of the card 3 is corrected downward by the regulation guide 122.
Therefore, it is possible to prevent the discharged card 3 from being stalled, caught on the upper portion of the reject stacker 121, and drawn into the card passage again. Moreover, since the ejected cards 3 are stacked in order, defective cards and the like can be easily managed.

The regulation guide 122 is formed integrally with the cover plate 32 as shown in FIG. Therefore, it is possible to prevent an increase in the number of parts and prevent the assembly work of the card issuing machine 1 from becoming complicated. Although the regulation guide 122 is integrally formed with the cover plate 32 in the present embodiment, the regulation guide 122 is not limited to this and may be a separate body.

On the other hand, a write timing sensor 23 attached to the door 18 is arranged between the card feeding mechanism 10 and the write read section 11. The write timing sensor 23 measures the timing of writing magnetic data to the card 3.

The card 3 normally conveyed from the card feeding mechanism 10 is guided to the card passage consisting of the fourth guide 29 and the fifth guide 30, and the write timing sensor 23.
Then, it is conveyed to the write / read unit 11 shown in FIG. The write / read section 11 includes a recording head 123 for recording predetermined magnetic data on the card 3, and the recording head 12
3 and a reproducing head 124 for reading the magnetic data recorded on the card 3.
The head surfaces of these heads 123 and 124 are exposed to the card passage from the opening of the fourth guide 29 and are in pressure contact with a backup roller (not shown). The backup roller is exposed in the card passage through the opening of the fifth guide 30.

A recording section conveying roller 125 is provided coaxially with the backup roller of the recording head 123. Then, a reproducing section conveying roller 115 is provided coaxially with the backup roller of the reproducing head 124. The transport rollers 125 and 115 are exposed to the card passage from the opening of the fifth guide 30.

Further, a recording portion tension roller 126 is provided at a position facing the recording portion conveying roller 125 with the card passage interposed therebetween, that is, at a position overlapping the recording head 123 in the width direction of the card 3, and the recording portion conveying roller 125 is provided. Pressing. Further, a reproducing section tension roller 127 is provided at a position facing the reproducing section conveying roller 115 with the card passage interposed therebetween, that is, a position overlapping the reproducing head 124 in the width direction of the card 3, and presses the reproducing section conveying roller 115. There is. These tension rollers 126 and 127 are exposed to the card passage from the opening of the fourth guide 29.

The recording section conveying roller 125 and the reproducing section conveying roller 115 are rotatably supported by the sixth side plate 114 and the base plate 16. The recording section conveying roller 125 and the reproducing section conveying roller 115 are the card feeding mechanism 1.
The second drive roller 100 of 0 and the toothed belt 116 are connected. The toothed belt 116 is provided with a tension roller 128 for ensuring tension. A large conveyance pulley 85 and a small conveyance pulley 86 are coaxially fixed to the reproduction section conveyance roller 115.

The large transport pulley 85 is connected to the transport motor 83 by a drive belt 87. Further, the small conveying pulley 86 is connected to the first driving roller 99 and the standby conveying roller 78 by a toothed belt 88. Therefore, the conveyance motor 83 is driven by the drive belt 87 and the conveyance large pulley 85.
Playback section transport roller 115 and transport small pulley 86 via
To rotate. Then, the rotation of the reproduction section conveyance roller 115 rotates the recording section conveyance roller 125 and the second drive roller 100 via the toothed belt 116. Further, the rotation of the small transport pulley 86 causes the first drive roller 99 and the standby transport roller 78 to rotate via the toothed belt 88.

The recording section tension roller 126 and the reproducing section tension roller 127 are rotatably supported by holders (not shown). Each holder is 5th
It is rotatably supported by the side plate 92 and the base plate 16. Further, each holder causes each tension roller 126, 127 to move each tension roller 126, 127 by means of a spring (not shown).
25,115.

A print timing sensor 2 attached to the door 18 is provided between the write read section 11 and the print section 12.
4 are arranged. The print timing sensor 24 measures the timing of printing on the thermal surface of the card 3.

As shown in FIGS. 1 and 23, the printing section 12 includes a print head 129 and a platen roller 130. The print head 129 is the thermal head body 13
1 and a heat generating portion 132 exposed at the tip of the thermal head body 131. Then, the thermal surface of the card 3 is pressed against the front end surface of the heat generating portion 132 by the platen roller 130 to perform thermal printing.

The printing section 12 and the card passage 16 before and after the printing section 12
3, a card transport mechanism 162 according to the present invention is installed. The card transport mechanism 162 is provided in the print head 12
9 is a head card guide 133 that forms a card path 163 by contacting in the front-rear direction of the card running direction F, and a print head 129 formed on the head card guide 133.
Full width guides 135, 135 over the entire head width of
A plurality of protruding guides 136 protruding from the full width guides 135, 135 in the card running direction F, and head side guides 137, 137 provided in the front and rear direction of the head card guide 133 in the card running direction F to form a card passage 163,
The head-side guides 137, 137 are provided with a plurality of guide protrusions 138 that project toward the head card guide 133 and that are located between the projecting guides 136 and are alternately sandwiched.

As shown in FIGS. 24 and 25, the head card guide 133 is provided between the base plate 16 and the cover plate 32 and has a length substantially equal to the width of the card 3. The head card guide 133 is provided with the heat generating unit 1.
32 is fitted, and only the curved portion at the tip is card passage 163.
And the full width guides 135 and 135 adjacent to the front and rear directions of the opening 134 in the card running direction F, that is, the upstream side and the downstream side, and the combs extending from the full width guides 135 along the card running direction F. And a plurality of protruding guides 136 protruding in a tooth shape. Here, the head card guide 133 has the front and rear head side guides 137, 137.
Since it is a separate member that is connected by the engagement of the protruding guide 136 and the guide protrusion 138 with respect to the card passage 16
3 can be removed. Therefore, the head card guide 133 is integrated with the print head 129 and can be attached / detached between the front and rear head side guides 137, 137. Therefore, the heat generating portion 132 is fixed to the opening 134 without any gap, so that it is always possible. Only the curved portion at the tip of the heat generating portion 132 may be exposed in the card passage 163.

The protrusion guide 136 has a chevron shape. Further, at the tip of the surface of each protruding guide 136 facing the card passage 163, the inclined surface 1 inclined so as to separate the tip side, that is, the head side guide 137 side from the card passage 163.
36a is formed.

The head side guides 137 and 137 forming the card passage 163 in front of and behind the print head 129 are
Each head-side guide 137 is provided with a plurality of guide protrusions 138 protruding in a comb shape along the card traveling direction F. The guide protrusion 138 has a chevron shape. further,
An inclined surface 138a is formed at the tip of the surface of each guide protrusion 138 facing the card passage 163, and is inclined so as to separate the tip side, that is, the head card guide 133 side from the card passage 163.

Further, the inclined surface 136a of the protrusion guide 136
Is more distant from the card passage 163 than the inclined surface 138a of the guide protrusion 138 located in the card width direction of the distal end portion and the inclined surface 138 of the guide protrusion 138.
The leading end of the card passage 163 is located closer to the leading end than the inclined surface 136a of the protrusion guide 136 located in the card width direction of the leading end.
It seems to be separated from.

The guide protrusion 138 and the protrusion guide 136 are inserted into each other, so that the head card guide 133 and the front and rear head side guides 137, 137.
And form a card passage 163 in succession. Here, when the card 3 is guided from the head guide 137 on the upstream side to the head card guide 133, the tip of the card 3 is guided along the inclined surface 138 a of the guide protrusion 138, and The vehicle will be guided by riding on the inclined surface 136a. Therefore, the tip of the card 3 is projected from the inclined surface 138a of the guide protrusion 138 to the guide 13
Since it is directly guided to the inclined surface 136a of No. 6, it is prevented from being caught by the end of the head card guide 133. Further, when the card 3 is guided from the head part card guide 133 to the downstream head side guide 137 over the heat generating part 132, the tip of the card 3 is projected by the protruding guide 136.
While being guided along the inclined surface 136a, the vehicle is guided by riding on the inclined surface 138a of the guide protrusion 138. Therefore, the leading end of the card 3 extends from the inclined surface 136a of the protruding guide 136 to the inclined surface 138a of the guide protrusion 138.
Since it is directly guided to, the head side guide 137 is prevented from being caught by the end portion.

In this embodiment, the head card guide 13
The projection guide 136 and the guide projection 138 of FIG. 3 are both mountain-shaped as shown in FIG. 25. However, the present invention is not limited to this and, for example, as shown in FIG. 28, both the projection guide 136 and the guide projection 138 may be rectangular. good. Also in this case, the tip end of the inclined surface of the protrusion guide 136 is separated from the card passage 163 more than the inclined surface of the guide protrusion 138 located in the card width direction of the tip portion, and the guide protrusion 1 is provided.
The leading end of the inclined surface of the card 38 is located at a position closer to the card passage 16 than the inclined surface of the protrusion guide 136 located in the card width direction of the leading end.
The card 3 is separated from the card 3, and the card 3 is placed in the head card guide 1.
It is possible to prevent the end portions of the 33 and the head side guide 137 from being caught.

Further, the protrusion guide 136 and the guide protrusion 13
A gap is provided between the No. 8 and. Therefore, when the head card guide 133 is removed from the card issuing machine 1, the bosses 164 and 164 can be disengaged by slightly moving in the card width direction.

On the other hand, as shown in FIG. 9, the platen roller 130 is rotatably supported by the platen lever 143, and the issuing motor 14 is a stepping motor.
7, the motor pulley 148, the toothed belt 149, and the pulley 1
50, the issuing roller 145, and the toothed belt 155 are connected and rotated.

As shown in FIGS. 1 and 26, the platen roller 130 is composed of a rubber large diameter portion 130a with which the heat generating portion 132 is in contact via the card 3 and a rotating shaft which is a fixing portion having a diameter smaller than this. It has a small diameter portion 130b. Since the large diameter portion 130a presses the card 3 against the heat generating portion 132, it is formed over the entire printing range in the card width direction. In the present embodiment, the printing range in the card width direction is the central portion excluding both ends of the card width.
The small-diameter portion 130b is formed in a portion other than the printing range in the card width direction, that is, both end portions of the platen roller 130 in this embodiment.

Roller side guides 139 and 139 forming a card passage 163 are arranged in the front and rear direction of the platen roller 130 in the card traveling direction F. Each roller-side guide 139 is provided with a first extension guide 140 that projects toward the small diameter portion 130b and extends on the small diameter portion 130b to the vicinity of the center of the print head 129 and forms a card passage 163. ing. Further, each roller-side guide 139 is formed with a second extension guide 141 which projects toward the large diameter portion 130a, is located between the large diameter portion 130a and the print head 129, and forms the card passage 163. .

Then, the tip ends of the first extension guides 140 of the roller side guides 139, 139 located in front of and behind the platen roller 130 are connected to the small diameter portion 130b and the print head 12.
9 and 9 are opposed to each other with a slight space provided therebetween. Therefore, when the card 3 is guided from the upstream roller-side guide 139 to the platen roller 130, the large diameter portion 130
The portion guided to a is printed and has a small diameter portion 130b.
The front and rear roller side guides 139, 139 are facing each other.
Are continuously guided by the respective first extension guides 140, 140. This prevents the leading end of the card 3 from being caught by the end of the roller side guide 139 on the downstream side.

The first extension guides 140 facing each other,
By providing a slight gap between the 140, it is possible to prevent the first extension guides 140 from interfering with each other even if there is a mounting error when the roller-side guides 139, 139 are assembled.

In this embodiment, as shown in FIG. 26, since the small diameter portions 130b are located at both ends of the platen roller 130, the first extension guides 140 are at both ends and the second extension guide 141 is near the central portion. Although not limited to this, for example, as shown in FIG. 29, the first extension guide 140 is located near the central portion by locating the small diameter portion 130b near the central portion of the platen roller 130, depending on the printing position.
The extension guides 141 may be provided at both ends. Also in this case, since the portion of the card 3 facing the small diameter portion 130b is continuously guided by the front and rear first extension guides 140, 140, the tip of the card 3 may be caught by the end of the roller side guide 139 on the downstream side. Can be prevented.

Here, as shown in FIG. 1, the corner of the tip of each first extension guide 140 on the card passage 163 side is chamfered. That is, the first extension guide 1
The leading end of 40 is the large diameter portion 130a of the platen roller 130.
Is located at a position more retracted than the contact point between the large diameter portion 130a and the heat generating portion 132. As a result, when the platen roller 130 is retracted from the card passage 163, even if the tip of the card 3 that has passed the apex of the large diameter portion 130a of the platen roller 130 is guided in the circumferential direction along the large diameter portion 130a, the first The extension guide 140 obliquely comes into contact with the inclined surface of the tip portion of the extension guide 140 and is guided to the downstream side, so that the card 3 is prevented from being caught by the roller side guide 139, and smooth running is enabled.

In the above description, the card transport mechanism 16 is used.
2 mainly describes the case where the card 3 is run in the direction of issuing the card 3, but the card 3 is conveyed in the same manner and the heat generating part 132 is also carried out when the card 3 after printing is sent backward.
Tip of the head, head side guide 137, roller side guide 13
It can be prevented from being caught in 9.

By the way, the thermal head body 131 and the head card guide 133 are integrated by fitting the tip of the thermal head body 131 into the opening of the head card guide 133, as shown in FIG. Positioning bosses 164 and 164 are formed on the sides of the thermal head body 131. This boss 16
4, 164 are fitted in the positioning holes of the base plate 16. Further, the thermal head main body 131 has two fixing screws 142, 14 for the base plate 16 as shown in FIG.
It is fixed by 2. For this reason, when removing the thermal head main body 131 and the head card guide 133 from the card issuing machine 1, the fixing screws 142, 142 are removed and pulled out slightly in the front side of the drawing, that is, in the card width direction.
This is possible because there is a gap in the engagement between the protruding guide 136 and the guide protrusion 138. As a result, the bosses 164 and 164 can be removed from the base plate 16. Then, it can be lifted up and completely removed.

The platen lever 143 is swingably supported with respect to the casing 15. Here, the rotation center of the platen lever 143 is coaxial with the rotation center of the issuing roller 145. Therefore, the platen roller 13
The platen lever 143 can be rotated even if 0 and the issuing roller 145 are connected by the toothed belt 155.

The platen lever 143 can swing inside a fan-shaped swing hole 144 formed in the base plate 16. The platen lever 143 is rotatable substantially horizontally between an operating position where the platen roller 130 can press the heat generating portion 132 and a release position inclined downward by about 45 degrees. Further, a lock mechanism (not shown) for maintaining the state where the platen lever 143 is installed in the operating position is provided. A release knob 158 for releasing the lock mechanism is provided below the platen lever 143.

Here, when the platen lever 143 is rotated to the most lowered released state, a part of the platen lever 143 contacts the door protrusion 18b of the door 18 as shown in FIGS. ing. Therefore, the door 18 cannot be completely closed by opening the door 18 and lowering the platen lever 143. When the door sensor 40 detects that the door 18 is open, the card issuing machine 1 does not operate. As a result, when the platen lever 143 is released at the time of maintenance such as cleaning of the print head 129 or when the card 3 is jammed in the printing unit 12, the card issuing machine 1 is operated in the same state without printing. It is possible to prevent a malfunction of issuing a card.

When the platen lever 143 is set to the operating position and the door 18 is closed, the door protrusion 18b is closed.
As a result, the lower side of the platen lever 13 cannot be reached and the release knob 158 of the lock mechanism of the platen lever 13 cannot be operated. This allows the platen lever 1
It is possible to prevent issuance of the defective print card 3 due to the release of 43.

The post-printing sensor 15 is provided on the downstream side of the printing unit 12.
2 is attached. The post-printing sensor 152 detects whether printing on the card 3 is completed.

The printed card 3 is conveyed to the card issuing unit 13. The card issuing unit 13 uses the issuing roller 145.
And a tension roller 146 for pressing the card 3 against the issuing roller 145 and a card issuing port 17. The issue roller 145 is connected to the issue motor 147 via the motor pulley 148, the toothed belt 149, and the pulley 150, and is rotated. Therefore, the issuing motor 147 is driven to rotate the issuing roller 145 and the completed card 3 is issued from the card issuing port 17. An issuance sensor 151 is attached to the card passage near the issuance roller 145. This issuing sensor 151
Thus, it is detected whether or not the card 3 is issued away from the issuing roller 145.

The operation of the above card issuing machine 1 will be described. First, the roll paper 2 is loaded as shown in FIGS. In this loading, the roll core 33 of the roll paper 2 is fitted to the spindle 34 and the roll paper mounting member 36 is fixed to the fixed shaft 35.
It is done by attaching to. Then, with the door 18 open, the outer peripheral end of the roll paper 2 is attached to the cutting mechanism 8 through the first take-in mechanism 5, the loop mechanism 6 and the second take-in mechanism 7 shown in FIG.

Then, the door 18 is closed and a feed switch (not shown) is pressed to rotate the take-in rollers 47, 55 and the carry motor 83. Here, the roll paper 2 is conveyed while being cut into a number of cards corresponding to the outermost circumference,
This is taken into the storage mechanism 14 and invalidated. this is,
This is because the outer peripheral surface of the roll paper 2 is a magnetic surface, so that malfunction due to scratches or dirt on the magnetic surface can be avoided. To take in the storage mechanism 14, the transport motor 83 is rotated in the forward direction to position the card 3 between the fourth guide 29 and the fifth guide 30, and then the transport motor 83 is rotated in the reverse direction to select the selector 1.
17 and the reject conveyance roller 118.

When the reject operation is completed, the solenoid 89 shown in FIG. 9 is excited to wait for the standby tension roller 79.
Evacuates from the card passage. Then, the roll paper 2 is taken up to the cutting position while being pressed by the push plate 77, and the card 3 cut by the rotary cutter 68 next comes into a standby state. Then, the take-in rollers 47, 5
5 and the conveyance motor 83 are stopped, the solenoid 89 is demagnetized, and the standby tension roller 79 projects into the card path. As a result, the setting is completed.

When the host issues a card issuing command signal, the carry motor 83 is rotated. As a result, the card 3 in the standby position is conveyed to the bent portion 98.

As shown in FIG. 19, when the card 3 is conveyed and sandwiched between the first drive roller 99 and the common roller 97, the common roller 97 is pushed out of the card passage by the thickness of the card 3 and urged. Holding means 161 against the spring 112
Move with. Here, the sliding direction S of the common roller 97
Are at the same angle θ with respect to the respective drive rollers 99 and 100, the distance between the first drive roller 99 and the common roller 97 is increased by the thickness of the card 3 so that the second drive roller 100
And the common roller 97 are spread by almost the same amount. At this time, all the urging force of the urging spring 112 acts between the common roller 97 and the first driving roller 99 to clamp the card 3. As a result, the pad pressure for holding the card 3 can be approximately doubled before the card is taken in, so that it is possible to prevent the speed of the card 3 from changing even in the bent portion 98 having a large conveyance resistance.

Further, when the card 3 is conveyed, it is taken in by the second drive roller 100 and the common roller 97 when the tip of the card 3 reaches the boundary between the bent portion 98 and the second linear conveying path 160. . At this time, the second drive roller 1
Since there is a gap G between 00 and the common roller 97, the card 3 can be taken in easily. Therefore, it is possible to smoothly take in the card 3 and prevent the speed of the card 3 from changing even in the bent portion 98 having a large conveyance resistance.

When the card 3 is further conveyed, the rear end of the card 3 is located between the first drive roller 99 and the common roller 97. The card 3 comes out from between the first drive roller 99 and the common roller 97, and comes out of the second drive roller 100.
And is clamped only by the common roller 97. At this time,
A gap is maintained between the first drive roller 99 and the common roller 97. Here, since the urging force of the urging spring 112 all acts on the second drive roller 100, the pad pressure for sandwiching the card 3 is approximately doubled compared with the case where the pad pressure is divided. Therefore, when the rear end of the card 3 comes out between the first drive roller 99 and the common roller 97, a sudden pushing force acts, but at the same time, the pad pressure of the second drive roller 100 and the common roller 97 is increased. Since it is approximately doubled, it is possible to prevent the velocity displacement of the card 3.

Further, when the card 3 is conveyed, the rear end of the card 3 is located between the second drive roller 100 and the common roller 97. Then, the card 3 is the second drive roller 10
By exiting from between 0 and the common roller 97, it is conveyed from the bent portion 98 to the second linear conveyance path 160.

In this card 3, the recording head 123 writes magnetic data and the reproducing head 124 reads magnetic data. Here, if the data reading is normal, the card 3 is conveyed to the printing unit 12. The card 3 is guided in the card passage 163 by the head side guide 137 and the roller side guide 139 on the upstream side and is conveyed to the print head 129.

At this time, the tip of the card 3 has the guide projection 1 of the head side guide 137 on the upstream side in the card running direction F.
38, the protrusion guide 13 of the head card guide 133
6 leads to the full width guide 135. Further, the tip of the card 3 passes from the full width guide 135 to the full width guide 135 on the opposite side through the heat generating portion 132. At this time, in the head section card guide 133, the heat generating section 1 of the print head 129 is
Since only the curved surface of the tip of 32 is exposed to the card passage 163, the tip of the card is guided without being caught by the tip of the heat generating portion 132. And the tip of the card 3 is
Projection guide 13 of the head side card guide 133 on the downstream side
6 is guided by the guide protrusion 138 of the head side guide 137 to reach the head side guide 137.

The tip of the card 3 is guided to the platen roller 130 by the roller side guide 139 on the upstream side. When the tip of the card 3 reaches the vicinity of the platen roller 130, the portion of the card 3 facing the small diameter portion 130b is guided by the first extension guide 140. At this time, the portion of the card 3 that faces the portion other than the small diameter portion 130b is guided by the second extension guide 141 to the platen roller 13
0 is guided to the large diameter portion 130a and is pressure-bonded to the heat generating portion 132 for thermal printing.

Further, the tip of the card 3 is guided from the first extension guide 140 on the upstream side to the roller side guide 139 on the downstream side via the first extension guide 140 on the downstream side. For this reason, the tip of the card 3 has the platen roller 130 and the heat generating portion 1
The first extension guide 1 on the downstream side immediately after passing between 32 and
40, so that the roller side guide 139 on the downstream side
Is prevented from being caught at the end of the.

The thermosensitively printed card 3 is discharged from the card issuing port 17 through the card issuing unit 13.

Further, when there is an abnormality in reading the magnetic data due to scratches or dust on the card 3, the conveyance motor 83 reverses at the time when the error is detected and the card 3 is moved to the selector 11.
It is sent to the storage mechanism 14 via 7. As a result, the card 3 having the abnormality is taken into the reject stacker 121.

On the other hand, the next card is issued when the rear edge of the preceding card passes the write timing sensor 23.
It is started by rotating the take-in roller 55. Therefore, the roll paper 2 for making the next card 3 is sent from the cutting mechanism 8 to the card standby section 9. The roll paper 2 is cut into a card 3 having a predetermined length by the same operation as described above, and is waited by the card waiting section 9.

Here, when the loop 59 is shortened by the rotation of the second take-in roller 55, the loop mechanism 6 operates and the first loop 59 moves.
The take-in roller 47 is rotated. This allows loop 59
Can always be ensured to have a predetermined length.

According to the card transport mechanism 162 of this embodiment, when the printing section 12 is run for printing the card 3, or when the printed card 3 is fed backward and the printing section 12 is run. As shown in FIG. 1, the tip of the card 3 is guided by the curved surface of the tip of the heat generating portion 132, and the guide projection 138 and the projecting guide 136 mesh with each other.
Since it is guided by the first extension guides 140 that are close to each other, the tip of the card 3 is prevented from being caught on the side surface of the heat generating portion 132, the head card guide 133, the head side guide 137, or the roller side guide 139. It can be prevented. Therefore, it is possible to prevent the jamming of the card and the damage or breakage of the leading end of the card 3 due to the catch.

Further, according to the card feeding mechanism 10 of the present embodiment, when the card 3 is taken into the bent portion 98, the pad pressure between the common roller 97 and the first driving roller 99 is the urging force of the urging spring 112. Since it is about half that, it is possible to easily take in the card 3. Therefore, it is possible to prevent the velocity displacement of the card.

When the card 3 is sandwiched only between the first driving roller 99 and the common roller 97, the second driving roller 1
Since a gap G is created between 00 and the common roller 97, the pad pressure for holding the card 3 can be doubled before the card is taken in. Therefore, it is possible to prevent the speed of the card 3 from changing even in the bent portion 98 having a large conveyance resistance.

When the card 3 is sandwiched by the first drive roller 99 and the second drive roller 100 with respect to the common roller 97, the common roller 97 pads the first drive roller 99 and the second drive roller 100. Pressure is adjusting plate 10
Since the pressure is equally divided by the adjustment of 4, it is possible to carry out stable conveyance without changing the speed due to slippage with the card 3.

Further, the card 3 is the second drive roller 100.
Since the gap G exists between the second drive roller 100 and the common roller 97 when the card 3 is taken into the common roller 97, the card 3 can be taken in easily. Therefore, it is possible to smoothly take in the card 3 and prevent the speed of the card 3 from changing even in the bent portion 98 having a large conveyance resistance.

The rear end of the card 3 has the first driving roller 9
A sudden pushing force acts when the second drive roller 1 moves out of the space between the second drive roller 1 and the common roller 97.
00 and the pad pressure of the common roller 97 are approximately doubled, so that the velocity displacement of the card 3 can be prevented.

On the other hand, the roll paper mounting mechanism 4 of this embodiment
According to this, the held portion 38 of the roll paper mounting member 36 is elastically biased and locked by the locking portion 39 of the fixed shaft 35, and this locking does not require tightening by a screw member. Therefore, regardless of the rotation directions of the roll paper 2 and the spindle 34, the roll paper 2 can always be held with respect to the spindle 34 without causing looseness or rattling. Therefore, the roll paper 2 can be stably supplied.

According to the roll paper mounting mechanism 4, the held portion 38 is elastically biased and locked by the locking portion 39, and the locking is performed by a screw member. Since the attachment is not necessary, the roll paper attachment member 36 can be removed from the spindle 34 by pulling the held portion 38 from the fixed shaft 35 with a force larger than this urging force.
In this state, the roll paper 2 can be attached to and detached from the spindle 34. Therefore, the roll paper replacement work can be quickly performed with one touch, and the workability can be improved.

Further, since the held portion 38 is elastically biased and locked by the locking portion 39, the held portion 3
When 8 rotates with respect to the fixed shaft 35, the locking portion 39 provides stable friction for a long period of time. Therefore, when the pulling of the roll paper 2 is stopped, the roll paper 2 is stopped by the friction between the held portion 38 and the locking portion 39. As a result, it is possible to reduce the occurrence of slack between the roll paper 2 and the first take-in mechanism 5 due to the inertia of the roll paper 2 continuing to rotate. Therefore, when the first take-in mechanism 5 is activated next time. In addition, it is possible to reduce a sudden increase in tension caused by pulling the roll paper 2 from a slack state and eliminating the slack. Therefore, slipping of the roll paper 2 can be prevented and stable conveyance can be maintained.

The above-described embodiment is an example of the preferred embodiment of the present invention, but the present invention is not limited to this, and various modifications can be made without departing from the gist of the present invention. For example, in the present embodiment, the card transport mechanism 162 is used in the printing unit of a card issuing machine that issues cards at amusement stores such as pachinko parlors, but the present invention is not limited to this, and a parking ticket issuing machine at a parking lot can be used. It can be used in the printing section of issuing machines for various tickets, tickets and prepaid cards.

[0131]

As is apparent from the above description, in the card transport mechanism according to the first aspect of the present invention, when the card transported through the card passage is printed by the print head, the card is transported while being pressed against the print head by the platen roller. In the card transport mechanism, a head unit card guide that contacts the print head in the front-back direction of the card running direction to form a card passage and exposes only the curved surface of the tip of the heat generating portion of the print head to the card passage, and the head unit. A full-width guide that covers the entire width of the print head formed on the card guide, a plurality of protruding guides that project from the full-width guide in the card running direction, and a card passage that is provided in the front-back direction of the head card guide in the card running direction. The head-side guide to be formed and the head-side guide project toward the head card guide. Since it is equipped with a plurality of guide protrusions that are located between the ids and are alternately sandwiched between them, the tip of the card moves from the full width guide to the curved portion of the tip of the heat generating part when printing the card. It is possible to guide along without being caught at the tip of the heat generating portion. Therefore, it is possible to prevent the jamming of the card and the damage or breakage of the tip of the card due to the catch.

Further, since the head card guide is a separate detachable member that is connected to the front and rear head side guides by the engagement of the projection guide and the guide projection, the heat generating portion is fixed to the head card guide without a gap. As a result, only the curved surface at the tip of the heat generating portion can be exposed to the card passage. Therefore, regardless of the mounting error of the print head, it is possible to always expose only the curved surface portion of the tip of the heat generating portion to the card passage, so that the card is caught in the heat generating portion and a card jam occurs, or the tip of the card is damaged. It can be prevented from breaking.

Further, in the card transport mechanism of claim 2,
The projecting guide has an inclined surface formed at the tip end so as to incline the tip side away from the card passage, and the guide projection has an inclination surface formed at the tip end so as to incline the tip side away from the card passage. The tip of the inclined surface of the protruding guide is farther from the card passage than the inclined surface of the guide protrusion located in the card width direction of the tip, and the tip of the inclined surface of the guide protrusion is the tip. Since it is arranged so as to be more distant from the card passage than the inclined surface of the protruding guide located in the card width direction, the tip of the card should be guided directly between the inclined surface of the guide protrusion and the inclined surface of the protruding guide. You can Therefore, it is possible to prevent the card from being caught on the end of the head-side guide or the head-side card guide to cause a card jam, or the tip of the card to be damaged or broken.

Further, in the card transport mechanism of the third aspect, a small diameter portion formed in a part of the platen roller, a roller side guide which is provided in the front and rear direction of the platen roller in the card running direction to form a card passage, and a roller side. Since an extension guide that projects from the guide toward the platen roller and is located between the small diameter portion and the print head to form a card passage is provided, guide the portion facing the small diameter portion of the card by the extension guide. You can For this reason, it is possible to prevent the card from being caught on the end of the roller side guide and causing a card jam, or the tip of the card from being damaged or broken.

[Brief description of drawings]

FIG. 1 is a front view showing a main part of a card transport mechanism of the present invention.

FIG. 2 is a front view showing the entire internal mechanism of the card issuing machine.

FIG. 3 is a side view showing the appearance of the card issuing machine.

FIG. 4 is a front view showing a state in which a door of the card issuing machine is closed.

FIG. 5 is a side view in vertical section showing a main part of a roll paper mounting mechanism.

FIG. 6 is a vertical sectional side view showing a roll paper mounting mechanism.

FIG. 7 is a vertical cross-sectional side view showing another embodiment of the fixed shaft of the roll paper mounting mechanism.

FIG. 8 is a vertical cross-sectional side view showing another embodiment of the pressing portion of the roll paper mounting mechanism.

FIG. 9 is a front view showing a main part of the card issuing machine.

FIG. 10 is a front view showing a roll paper and a card passage of the card issuing machine.

FIG. 11 is a view showing a loop lever, (A) is a rear view and (B) is a bottom view.

FIG. 12 is a front view showing another embodiment of the loop lever.

FIG. 13 is a rear view showing the main part of the card issuing machine.

14A and 14B are diagrams showing a rotary cutter, in which FIG. 14A is a rear view and FIG. 14B is a plan view.

FIG. 15 is a side view showing a card standby unit.

FIG. 16 is a perspective view showing a standby tension roller.

17A and 17B are views showing a main part of a holding means, FIG. 17A is a front view and FIG. 17B is a side view of a partial cross section.

FIG. 18 is a partial cross-sectional side view showing the holding means.

FIG. 19 is a front view showing a main part of a card feeding mechanism.

FIG. 20 is a front view showing a state where an unauthorized card is ejected.

FIG. 21 is a front view showing a storage mechanism.

FIG. 22 is a view showing a cover plate, (A) is a front view,
(B) is a bottom view.

FIG. 23 is a front view showing the card transport mechanism of the present invention.

FIG. 24 is a view showing a head section card guide,
(A) is a bottom view and (B) is a front view.

FIG. 25 is a bottom view showing a state where the print head side of the card transport mechanism is viewed from the card passage side.

FIG. 26 is a bottom view showing a state where the platen roller side of the card transport mechanism is viewed from the outside of the card path.

FIG. 27 is a diagram showing a printing unit, (A) is a front view,
(B) is a side view.

FIG. 28 is a bottom view showing a state in which the print head side of another embodiment of the card transport mechanism is viewed from the card passage side.

FIG. 29 is a bottom view showing a state where the platen roller side of another embodiment of the card transport mechanism is viewed from the outside of the card path.

FIG. 30 is a cross-sectional view showing a door and a platen lever, FIG.
(B) is a case where the platen lever is in the release position.

FIG. 31 is a view showing a selector, (A) is a bottom view,
(B) is a side view.

FIG. 32 is a front view showing a conventional card transport mechanism.

FIG. 33 is a front view showing a main part of a conventional card transport mechanism.

[Explanation of symbols]

3 cards 129 print head 130 Platen roller 130b small diameter part 132 Heat generating part 133 Head card guide 135 full width guide 136 Projection guide 137 Head side guide 138 Guide protrusion 139 Roller side guide 140 First extension guide 162 card transport mechanism 163 card passage

Claims (3)

(57) [Claims] 1. A card transport mechanism for transporting a card transported through a card passage while pressing it against a print head by a platen roller when the card is printed by the print head. A head portion card guide that contacts the contact portion to form the card passage and exposes only a curved surface portion of the heat generating portion of the print head to the card passage; and a head width of the print head formed in the head portion card guide. A full-width guide over the entire area, a plurality of protruding guides that project from the full-width guide in the card running direction, a head-side guide that is provided in the front-back direction of the card running direction of the head card guide to form the card passage, From the head side guide to the head section card guide, A card transport mechanism comprising: a plurality of guide protrusions that are located between and are alternately sandwiched. 2. The projecting guide has a tip end formed with an inclined surface that is inclined so as to separate the tip end side from the card passage, and the guide protrusion has the tip end part which separates the tip end side from the card passage. And a distal end portion of the inclined surface of the protruding guide is separated from the card passage more than an inclined surface of the guide protrusion located in the card width direction of the distal end portion. 2. The card transport mechanism according to claim 1, wherein a tip end portion of an inclined surface of the guide protrusion is further apart from the card passage than an inclined surface of the protrusion guide located in the card width direction of the tip end portion. 3. A small diameter portion formed on a part of the platen roller, a roller side guide which is provided in the front and rear direction of the platen roller in the card running direction to form the card passage, and from the roller side guide to the platen roller. The card transport mechanism according to claim 1 or 2, further comprising: an extension guide that protrudes toward the base and is located between the small diameter portion and the print head to form the card passage.