JPH08282197A - Film transferring device - Google Patents

Abstract

PURPOSE: To provide a film transferring device, with which no burr develops at the end of a card. CONSTITUTION: The transferring device 32 is equipped with heating rollers 14, carrying rollers 16, a film guide roller 18, a film peeling roller 20, a film feed roller 22, which is arranged above card carrying path 12 and a film take-up roller 24. Transferring film 28 is delivered from film feed roller 22, passed through the film guide roller 18 between a pair of the heating rollers 14 and hangingly attached through the film peeling roller 20 to the film take-up roller 24. The upperside carrying roller 16 is rotatingly driven with a driving means 34 under the condition that a clutch 36 is interposed between the carrying roller 16 and the driving means 34. The clutch 36 is turned off by a controlling means 38, when the rear end of a card reaches near the film peeling roller 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film transfer for fixing characters or patterns on the surface of a card made of a plastic material and then transferring a transfer layer on the characters or patterns to protect these characters or patterns. Regarding the device.

[0002]

2. Description of the Related Art For example, in a color card printer, a desired color image can be obtained by printing Y, M, C and K colors on the same portion on a plastic card made of vinyl chloride, PET or the like. I am trying to form. FIG. 4 shows a front view of the color card printer. The color card printer 2 includes a card supply unit 4, a printing unit 6, an overcoat unit (film transfer device) 8 and a card stock unit 10. When printing a card, the printing section 6
After the characters and patterns are fixed on the card surface with, the card surface is covered with a transfer layer by thermal transfer in order to protect the card surface with the film transfer device 8.

FIG. 5 is a schematic front view of a conventional film transfer device. The conventional film transfer device 8 includes a pair of heat rollers 1 arranged above and below the upstream side of the card transport path 12.
4, a pair of conveying rollers 16 arranged on the upper and lower sides of the downstream side of the card conveying path 12, a film guide roller 18 arranged on the upstream side and the downstream side of the heat roller 14 on the card conveying path 12, a film peeling Roller 20 and film supply roller 2 disposed above card transport path 12
2. A film winding roller 24 is provided. Card 26
The transfer film 28 on which the transfer layer 28 </ b> A for protecting the surface of the transfer film 28 is formed is wound around the film supply roller 22.
The transfer film 28 is fed from the film supply roller 22, passes between the pair of heat rollers 14 via the film guide roller 18, passes through the film peeling roller 20, and is wound around the film take-up roller 24. Among these rollers, the pair of heat rollers 14, the transport roller 16 disposed below, and the film take-up roller 24 are always rotationally driven by the drive means so that the card 26 is transported at the same speed. , The other remaining rollers are rotatably arranged.

The pair of heat rollers 14 are used for the card 2
6 and the transfer film 28 are arranged so as to be sandwiched therebetween. The outer peripheral surface of the heat roller 14 disposed on the upper side of the card transport path 12 is made of, for example, metal, and a heater is disposed inside. The heat roller 14 arranged on the lower side of the card transport path 12 functions as a receiving roller for the upper heat roller 14, the outer peripheral surface is formed of, for example, soft rubber, and no heater is arranged inside. The pair of conveying rollers 16 are arranged in such a size that the card 26 can be held therebetween, and are made of, for example, synthetic resin or soft rubber. The film guide roller 18 and the film peeling roller 20 are made of, for example, synthetic resin or metal.

The distance L between the center of the heat roller 14 and the center of the carrying roller 16 on the card 26 carrying path 12 is set shorter than the length of the card 26 along the carrying direction. When the card 26 is conveyed to the card conveying path 12, the card 26 is heated and nipped by the pair of heat rollers 14 together with the transfer film 28, whereby the transfer layer 28A of the transfer film 28 is thermally transferred to the card 26. Then, the card 26 is conveyed by the rotation of the heat roller 14 and the movement of the transfer film 28 by the film winding roller 24. When the intermediate portion of the card 26 reaches the heat roller 14 as the card 26 is conveyed, the front end of the card 26 is conveyed by the conveying roller 16.
The card 26 is carried by the rotation of the heat roller 14, the movement of the transfer film 28 by the film take-up roller 24, and the rotation of the carrying roller 16. Then, when the rear end of the card 26 separates from the heat roller 14, the card 26 moves to the film winding roller 24.
The transfer film 28 is moved by and the conveyance roller 16 is rotated to convey the transfer film 28. When the trailing edge of the card 26 separates from the film peeling roller 20, the card 26 moves to the transport roller 1
It is conveyed to the downstream only by the rotation of 6.

The transfer film 28 is used for the film peeling roller 2 when the card 26 reaches the film peeling roller 20.
By winding 0, the card 26 can be moved to approximately 90
The transfer film 28 is peeled off the card 26 by changing the direction and moving to the position directly above. The base layer 28B not transferred to the transfer film 28 by heat
, And the transfer film 28 is taken up by the film take-up roller 24.

[0007]

However, according to such a conventional film transfer device 8, the transfer film 28 is peeled off by dragging only the transfer layer 28A at the end of the card 26 at the final stage of peeling the transfer film. As shown in FIG. 6, there is a problem that a so-called burr 30 is generated at the end of the card 26. The inventors diligently studied this phenomenon and the cause, and since the transfer layer 28A component of the transfer film 28 strongly holds the binding force in the film surface direction, the transfer film peeling final on the film peeling roller 20 is finished. At times, due to the driving force of the transport roller 16, a binding between the transfer layer 28A transferred onto the card 26 and the transfer layer 28A left untransferred on the base layer 28B of the transfer film 28 without being applied with heat. The force also exceeds the original binding force between the transfer layer 28A and the base layer 28B which remains untransferred on the base layer 28B on the transfer film 28 without being applied with heat, resulting in the transfer. At the end of film peeling, card 26
It was found that only the transfer layer 28A was dragged to the end of the sheet and peeled off. That is, at the end of peeling the transfer film,
The peeling force applied to the transfer film 28 is generated by the card 2
6 is canceled by the card 26 conveying force that is applied almost horizontally to the surface, and as a result, it becomes a weak force as shown by the arrow in FIG. It turned out to occur. The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a film transfer device in which burrs do not occur at the edge of a card.

[0008]

To achieve the above object, the present invention provides a transfer film having a transfer layer to be transferred onto a card, and a transfer path having a size for holding the card and the transfer film in the card transfer path. A pair of heat rollers arranged above and below, a pair of conveyance rollers arranged above and below the conveyance path with a size for sandwiching the card, at a position downstream of the heat rollers in the card conveyance path, and the heat roller and conveyance. A film peeling roller disposed at a card conveying path between the roller and a take-up roller for winding the transfer film wound between the pair of heat rollers and wound on the film peeling roller; and the heat roller. In the film transfer apparatus, the transport roller and the take-up roller are rotated in a card transport direction. And the rotation driving means, a power transmission system between the transportation roller and the rotation driving means is brought into contact with and separated from the rotation driving means, and the transportation roller is rotated while the power transmission system between the transportation roller and the rotation driving means is disconnected. A enabling means is provided, and a control means for disengaging the clutch when the downstream end of the card conveyed in the card conveying path in the conveying direction is located in the vicinity of the film peeling roller is provided.

Further, according to the present invention, the winding roller is
The transfer film wound around the film peeling roller is arranged so as to be wound in a direction orthogonal to the card transport path. Further, in the present invention, the rotation driving means of the heat roller and the winding roller are the same, and the rotation driving means of the conveying roller is a rotation driving means different from the same rotation driving means. It is characterized by being. Further, according to the present invention, one of the pair of transport rollers is rotationally driven by the rotary drive means, and the clutch is provided in a power transmission system between the one transport roller and the rotary drive means. It is characterized by being.

Further, the present invention is characterized in that the control means includes a sensor which is arranged in the card carrying path and detects a card carried in the card carrying path. Further, the present invention is characterized in that the control means is configured to disengage the clutch after a lapse of a predetermined time after receiving the signal of the card detected by the sensor. Further, according to the present invention, the control means connects the power transmission system between the transport roller and the rotation drive means after the downstream end of the card in the transport direction is separated from the film peeling roller to the downstream in the transport direction. It is characterized by being configured.
Further, according to the present invention, the control means connects a power transmission system between the conveying roller and the rotation driving means after a lapse of a certain time from the time when the downstream end of the card in the conveying direction is located in the vicinity of the film peeling roller. It is characterized in that it is configured to. Further, the present invention is characterized in that the distance on the card transport path between the center of the heat roller and the center of the transport roller is set shorter than the length of the card along the transport direction.

Further, the present invention is characterized in that a film guide roller for passing the transfer film between the pair of heat rollers is arranged at a position upstream of the heat roller in the card conveying path. Further, the present invention is characterized in that the card is made of a plastic material. Further, the present invention is characterized in that the transfer film has a base layer, and the transfer layer is formed on the base layer.

[0012]

When the rear end of the card reaches the vicinity of the film peeling roller, the conveying roller becomes rotatable. The card is
The transfer film is conveyed to the downstream in the conveying direction only by the movement of the transfer film due to the rotational driving of the film winding roller. for that reason,
The force for peeling the transfer film increases at the final stage of peeling the transfer film on the film peeling roller, and becomes stronger than the binding force of the transfer layer component in the film surface direction, resulting in a clean burr-free card edge. It becomes possible to get a card.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 and 2 are front views of the film transfer device according to the embodiment. Incidentally, the same parts and members as those of the conventional apparatus shown in FIG. The transfer device 32 according to the embodiment includes a pair of heat rollers 14 arranged above and below on the upstream side of the card transport path 12, and the card transport path 12.
A pair of conveying rollers 16 arranged on the upper and lower sides of the downstream side of
A film guide roller 18 and a film peeling roller 20 which are respectively arranged on the upstream side and the downstream side of the heat roller 14 on the card conveyance path 12, a film supply roller 22 and a film take-up roller which are arranged above the card conveyance path 12. A roller 24 is provided. The transfer film 28 is fed from the film supply roller 22, passes between the pair of heat rollers 14 via the film guide roller 18, passes through the film peeling roller 20, and is wound around the film take-up roller 24. The pair of heat rollers 14 and the film winding roller 24 are always rotationally driven by the same driving means so that the cards 26 are conveyed at the same speed,
The remaining rollers other than the transport roller 16 arranged on the lower side are rotatably arranged.

The carrying roller 16 above the card carrying path 12
Is rotationally driven by a drive means 34 different from the drive means so that the card 26 is conveyed at the same speed as the above, and a clutch 36 is interposed between the conveyance roller 16 and the drive means 34. Has been done. The clutch 36 may be, for example, a mechanically structured clutch that is actuated by an actuator. When the clutch 36 is put in, the transport roller 16 is rotationally driven by the driving means 34, and the clutch 3 is used.
When the roller 6 is turned off, the conveying roller 16 can freely rotate, and a commercially available electromagnetic clutch or the like can be used.

The switching of the clutch 36 is performed by the control means 3
The clutch 36 is disengaged when the rear end of the card 26 reaches the vicinity of the film peeling roller 20. The control unit 38 is configured to include a sensor 40 and a timer arranged at 12 places of the conveying path downstream of the conveying roller 16, and the sensor 40 includes, for example, an optical sensor including a light emitting unit and a light receiving unit, A proximity switch, a micro switch, or the like can be used. In the embodiment, the sensor 4
0 detects the leading end of the card 26 in the conveyance direction, and after this detection,
The clutch is configured to be disengaged after a predetermined time has elapsed by a timer. Further, the control means 38 is configured to engage the clutch 36 when the rear end of the card 26 separates from the film peeling roller 20 or immediately after the separation. This control is performed, for example, after a lapse of a predetermined time after the sensor 40 detects the leading end of the card 26 in the carrying direction.
The clutch 36 may be inserted, or the downstream end of the card 26 in the transport direction may be the film peeling roller 2.
It is also possible to provide a sensor for detecting a state of being separated from 0 in the downstream in the transport direction, and to engage the clutch 36 based on the signal of this sensor.

Next, the operation will be described. The card 26 is transported to the card transport path 12, and the process until the rear end of the card 26 reaches the vicinity of the film peeling roller 20 is the same as the conventional one. When the rear end of the card 26 reaches the vicinity of the film peeling roller 20, that is, after a lapse of a predetermined time after the sensor 40 detects the front end of the card 26 in the conveyance direction, the control means 38 is provided.
The drive means 34 and the transport roller 16 are separated by
The upper transport roller 16 is in a rotatable state like the lower transport roller 16. On the other hand, a pair of heat rollers 1
4. The film take-up roller 24 is still driven to rotate, so that the card 26 whose rear end is near the film peeling roller 20 is
The transfer film 28 is conveyed by the rotational driving of the sheet No. 4 to the downstream side in the conveying direction.

Therefore, at the final stage of peeling the transfer film on the film peeling roller 20, the force for peeling the transfer film 28 is in the moving direction of the transfer film 28.
It acts in the direction directly above 6, that is, in the direction orthogonal to the card 26. As a result, the force for peeling the transfer film 28 increases as indicated by the arrow in FIG.
It becomes stronger than the binding force of the components in the film surface direction, and as shown in FIG. 3, it becomes possible to obtain a clean card 26 without burrs at the ends.

[0018]

As is apparent from the above description, according to the present invention, the power transmission system between the transport roller and the rotary drive means is brought into contact with and separated from the transport roller and the rotary drive means. A clutch that allows the transport roller to rotate in a state in which the power transmission system between the rotation drive means and the drive mechanism is disconnected is provided, and the downstream end of the card transported in the card transport path in the transport direction is near the film peeling roller. The control means is provided to disengage the clutch when the vehicle is positioned at. Therefore, the force for peeling off the transfer film can be increased at the final stage of peeling off the transfer film, and it becomes possible to obtain a clean card without burrs at the ends.

[Brief description of drawings]

FIG. 1 is a schematic front view of a film transfer device according to the present description.

FIG. 2 is a schematic front view of the film transfer device of the present description.

FIG. 3 is an explanatory view of a card obtained by the film transfer device of the present invention.

FIG. 4 is a front view of a color card printer.

FIG. 5 is a schematic front view of a conventional film transfer device.

FIG. 6 is an explanatory view of a card obtained by a conventional film transfer device.

[Description of sign]

 12 Card Conveying Path 14 Heat Roller 16 Conveying Roller 18 Film Guide Roller 20 Film Peeling Roller 22 Film Supply Roller 24 Film Winding Roller 26 Card 28 Transfer Film 34 Drive Means 36 Clutch 38 Control Means 40 Sensor

Claims (12)

[Claims] 1. A transfer film having a transfer layer to be transferred onto a card, a pair of heat rollers arranged above and below the transfer path with a size for sandwiching the card and the transfer film in a card transfer path, and the heat roller. And a pair of transport rollers arranged above and below the transport path with a size for holding the card, and at a card transport path location between the heat roller and the transport roller at a position downstream of the card transport path. A film peeling roller, a take-up roller that winds the transfer film wound around the film peeling roller passing between the pair of heat rollers, a direction in which the heat roller, the conveying roller and the take-up roller are conveyed. A film transfer apparatus comprising: a rotation driving unit for rotating the conveyance roller between the conveyance roller and the rotation driving unit. A clutch is provided which connects and separates a power transmission system to and from the rotation driving means and allows the conveyance roller to rotate in a state where the power transmission system between the transportation roller and the rotation driving means is disconnected, and the card transportation path. The film transfer device is provided with a control means for disengaging the clutch when the downstream end of the card conveyed in the conveyance direction is located in the vicinity of the film peeling roller. 2. The film transfer apparatus according to claim 1, wherein the winding roller is arranged so as to wind the transfer film wound around the film peeling roller in a direction orthogonal to the card transport path. 3. The rotation driving means of the heat roller and the winding roller use the same rotation driving means, and the rotation driving means of the conveying roller uses a rotation driving means different from the same rotation driving means. The film transfer device according to claim 1 or 2. 4. One of the pair of transport rollers is rotationally driven by the rotary drive means, and the clutch is provided in a power transmission system between the one transport roller and the rotary drive means. The film transfer device according to claim 1, 2, or 3. 5. The film transfer apparatus according to claim 1, wherein the control means includes a sensor which is arranged in the card transport path and detects a card transported in the card transport path. . 6. The film transfer apparatus according to claim 5, wherein the control means is configured to disengage the clutch after a lapse of a predetermined time after receiving a signal for detecting the card of the sensor. 7. The control means is configured to connect a power transmission system between the transport roller and the rotation driving means after the downstream end of the card in the transport direction is separated from the film peeling roller to the downstream in the transport direction. Claims 1, 2, 3,
The film transfer device according to 4, 5, or 6. 8. The control means connects a power transmission system between the conveying roller and the rotation driving means after a lapse of a certain time from the time when the downstream end of the card in the conveying direction is located near the film peeling roller. The film transfer device according to claim 1, 2, 3, 4, 5 or 6, which is configured as described above. 9. The distance on the card transport path between the center of the heat roller and the center of the transport roller is set shorter than the length of the card along the transport direction. The film transfer device according to 5, 5, 6, 7 or 8. 10. A film guide roller for passing a transfer film between a pair of heat rollers is arranged at a position upstream of the heat roller in the card transport path. , 6, 7, 8 or 9, the film transfer device. 11. The card is formed of a plastic material as claimed in claim 1, 2, 3, 4, 5, 6, 7, 8, 9.
Alternatively, the film transfer device according to item 10. 12. The transfer film has a base layer,
The transfer layer is formed on this base layer, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, or 11.
The film transfer device described.