JP3015288B2 - Character eraser for print record card and fan heater control circuit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a erasing device for a print recording card which executes erasing by heating a print recording card capable of printing and erasing by heating, and an erasing device for the printing recording card. The present invention relates to a fan heater control circuit for controlling power supply to a fan heater used in a printing device, and more particularly, to a printing recording card erasing device that enables efficient erasing without damaging the printing recording card. ,
The present invention relates to a fan heater control circuit capable of controlling the temperature of heated air blown by a fan heater with high accuracy.

[0002]

2. Description of the Related Art Recently, a printing record card capable of printing and erasing characters by heating has been used for prize exchange at a pachinko parlor or the like.

This print recording card has the size of a business card, has a recording layer showing a thermoreversible reaction on a transparent polyester film, and has a protective layer on the recording layer. And realizes printing (heating and printing using a thermal head etc.) by heating the recording layer in the print recording area to make the recording layer self-turbid, and makes the self-turbid recording layer transparent by heating. The erasing is realized by converting the characters into characters.

FIG. 15 shows the appearance of the print recording card. As shown in this figure, the print recording card usually has a magnetic recording area on the back surface in addition to the print recording area.

[0005] This print recording card is erased by heating to about 105 ° C, and then printed again to be used. Conventionally, in order to erase a print recording card, two heat rollers heated by a built-in heater are prepared, and a print recording card is inserted between the two heat rollers to perform printing. The recording card was heated while the card was being conveyed to erase characters.

[0006]

However, since the heat roller must have heat conductivity, it must be made of a hard metal, and therefore, the heat roller is used to heat the print recording card. However, there is a problem that the printing record card is scratched when the printing method is adopted.
Further, since the temperature distribution of the heat roller is not uniform, there is a problem that erasure unevenness occurs. Further, there is a problem that the print recording card is warped by the heat roller.

In order to solve this problem, a method of heating the print recording card by pressing a heating element against the print recording card from above and below like a stamp has been used. Then, since the print record card must be stopped, there is another problem that the working efficiency is reduced.

Therefore, it is conceivable to employ a method in which the print recording card is heated in a non-contact manner while being transported by using a fan heater. When heating the print record card,
In order to prevent a sharp temperature gradient from being applied to the print recording card, it is necessary to heat both sides of the card. From now on, when adopting a configuration in which the print recording card is heated by using the fan heater, a configuration in which fan heaters are provided above and below the print recording card as shown in FIG. As shown in (1), it is conceivable to adopt a configuration in which a box through which a print recording card passes is provided, and a fan heater is provided inside the box so that the box functions as a temperature chamber.

However, when the former configuration is adopted, there is a problem that the size of the apparatus becomes large because fan heaters need to be provided above and below the print recording card. Also,
When the latter configuration is adopted, there is a problem that the temperature gradient of the print recording card becomes large because the heated air is applied to only one card surface of the print recording card.

On the other hand, in order to realize a configuration in which the print recording card is heated by using the fan heater, it is necessary to control the temperature of the heated air blown by the fan heater to a specified temperature required for erasing.

Conventionally, however, the fan heater has been used only for blowing heated air, and there has been no requirement to control the heated air emitted from the fan heater to a specified temperature. From now on, when realizing a configuration in which the print recording card is heated by using the fan heater, it is necessary to newly construct a technology for controlling the heated air blown by the fan heater to a specified temperature.

The present invention has been made in view of such circumstances, and has a new printing recording card eraser which can efficiently execute erasing without damaging the printing recording card according to a compact configuration. It is an object of the present invention to provide a new character heater device and a new fan heater control circuit capable of controlling the temperature of heated air blown by a fan heater used in the print recording card erasing device with high accuracy.

[0013]

FIG. 1 shows the principle configuration of a erasing device for a print recording card according to the present invention, and FIG. 2 shows the principle configuration of a fan heater control circuit according to the present invention.

In FIG. 1, reference numeral 1 denotes a erasing device for a print recording card according to the present invention, which erases a print recorded on a print recording card 2 capable of printing and erasing by heating.
The print recording card erasing device 1 includes a transport unit 10,
Guide plate means 11 and heater plate means 12
And fan heater means 13.

The transport means 10 transports the print recording card 2. The guide plate means 11 is provided in contact with the lower surface of the print recording card 2 to be conveyed, and guides the conveyance of the print recording card 2.

The heater plate means 12 is composed of a plate plate 12a exhibiting heat conductivity and a heater 12b formed on the plate plate 12a, and heats the card surface of the print recording card 2. The heater plate means 12 may be provided on the printing surface of the print recording card 2 with a slight gap between the printing plate and the card surface.

The fan heater means 13 has an opening 1 having a longitudinal shape in a direction orthogonal to the conveying direction of the print recording card 2.
A duct means 13b having a 3a, a heater element means 13c provided inside the duct means 13b, and a fan which is provided at a position where the opening 13a is viewed through the heater element means 13c and blows air toward the heater element means 13c Means 13d and fan means 1 provided inside duct means 13b so as to face opening 13a.
A heating object of the heater plate means 12 is formed by blowing heating air to the print recording card 2 through a slit portion of the guide plate means 11 and a resistance object means 13e which operates as a resistance object against the blowing of 3d. The card surface of the print recording card 2 on the opposite side is heated.

In the print recording card erasing device 1 of the present invention thus constructed, the heater plate means 12 is provided, for example, between the print surface of the print record card 2 and the print surface side card surface. For example, the print recording card 2 which is provided with a small gap and is conveyed by the conveying means 10
The card surface of the print side is heated by the fan heater means 13.
Sends heated air to the print recording card 2 to heat the card surface of the print recording card 2 opposite to the surface to be heated by the heater plate means 12.

With this heating configuration, the print recording card 2
Is heated while being conveyed without receiving any pressing force, whereby the print recorded in the print recording area is erased.

As described above, according to the erasing device 1 for a print recording card of the present invention, the print recording card 2 is not damaged and the print recording card 2 is not warped according to a compact structure, and the print recording card 2 is efficiently bent. The print recorded on the print recording card 2 can be erased.

In FIG. 2, reference numeral 20 denotes a fan heater control circuit of the present invention, which controls power supply to a heater element of the fan heater. For example, the heater element means 13c of the fan heater means 13 shown in FIG.
Control the power supply to the

The fan heater control circuit 20 includes a rectifier 21, a main switch 22, a first sub switch 23, a second sub switch 24, a main controller 25, and a sub controller 26. And

The rectifier 21 rectifies and outputs the AC power supply in full-wave and half-wave rectified. The main switch 22 switches the power supply to the fan heater. The first sub-switch means 23 controls whether to supply the full-wave rectification output from the rectification means 21 to the fan heater. The second sub-switch 24 controls whether to supply the half-wave rectification output from the rectifier 21 to the fan heater.

The main control means 25 controls the operation of the main switch means 22 in accordance with the ventilation temperature of the fan heater and the target value thereof, while following the duty control. The sub-control means 26, according to the blowing temperature of the fan heater,
The operation of the first and second sub-switch means 23 and 24 is controlled.

In the fan heater control circuit 20 of the present invention configured as described above, the main control unit 25 increases the duty time for turning on the main switch unit 22 when the air temperature of the fan heater is lower than the target value. ,
When it is high, the power supply to the fan heater is controlled in accordance with the duty control of shortening the duty time.

At this time, when the blower temperature of the fan heater is lower than the specified lower limit, the sub-control means 26 instructs the first sub-switch means 23 to perform a power supply operation, thereby controlling the fan heater. When the blast temperature of the fan heater is lower than the prescribed upper source value, the second sub-switch means 24 is instructed to perform a power supply operation. The heater is controlled so as to supply the half-wave rectification output from the rectification unit 21 to the heater.

According to this power supply configuration, when the blower temperature of the fan heater is lower than the lower limit, the full-wave rectification output from the rectifier 21 is supplied to the fan heater,
When the blower temperature of the fan heater is between the lower limit value and the upper limit value, the half-wave rectification output from the rectifier 21 is supplied to the fan heater. When the blower temperature of the fan heater is higher than the upper limit value, Even if the control unit 25 instructs power supply to the fan heater, power is not supplied to the fan heater.

As described above, the fan heater control circuit 20 of the present invention employs a configuration in which the power supply is finely controlled by changing the power supply level when supplying power to the fan heater. Compared with the control, the blower temperature of the fan heater can be controlled with high accuracy.

[0029]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail according to embodiments. FIG. 3 shows a system configuration of a print recording card processing system including the present invention.

In this print recording card processing system, a supply device 30 that takes out and supplies the print recording cards 2 to be stacked one by one and brushes using water while transporting the print recording cards 2 output from the supply device 30. A cleaning device 40 that cleans the print recording card 2 output by the cleaning device 40, and a drying device 50 that dries the water by using a belt that exhibits water absorption, and a drying device 50 according to the present invention. The printing apparatus includes a erasing device 60 for erasing a print to be printed in the print recording area by heating the print recording card 2 to be printed, and a discharge device 70 for stacking the print recording card 2 output from the erasing device 60. By heating the print recording card 2 after cleaning and drying, the print recorded in the print recording area is erased and the print recording card 2 is re-used. And performs to go processing.

FIG. 4 shows an embodiment of the erasing device 60 of the present invention used in the print record card processing system. As shown in this figure, the erasing device 60 includes a transport roller 600 that transports the print recording card 2 (in this embodiment, the orientation in which the print recording area is the upper surface), and a transported print recording card 2 2, a front guide plate 601 and a rear guide plate 602 that guide the conveyance of the print recording card 2 and are provided opposite to the front guide plate 601 and the rear guide plate 602, and the front guide plate Plate 601 / heater heater plate 603, which is disposed with a slight gap from the upper surface of print recording card 2 conveyed on rear guide plate 602, and heater plate 603 formed on heater plate 603; The heater element 604 to be heated passes between the front guide plate 601 and the rear guide plate 602. Te, printing in transport record card 2
A fan heater 605 that blows heated air to the lower surface of the fan, and a fan heater thermistor 606 that is provided between the front guide plate 601 and the rear guide plate 602 and detects the temperature of the fan heater 605.

FIG. 5 is a top view of the erasing device 60.
As shown in (a), a part of the heater element 604 is omitted, and a heater plate thermistor 607 for measuring the temperature of the heater plate 603 is provided there. In addition, FIG.
As shown in FIG. 5B, which is a side view of FIG. In response, the rotation is transmitted to the upper conveying roller 600 that is in contact with the lower conveying roller 600, thereby driving the conveying roller 600.

The fan heater 605 provided in the erasing device 60
As shown in FIG. 4, an opening 700 opening between the front guide plate 601 and the rear guide plate 602 is provided.
Duct 701, a heater element 702 provided inside the duct 701, and a heater element 702
A fan 703 that is provided at a position where the opening 700 is viewed through the fan 703 and blows air toward the heater element 702;
The agitation plate 704 is provided inside the duct 701 and operates as a resistance object to the air blown by the fan 703.

The opening 700 of the duct 701 is shown in FIG.
As shown in (a), the print recording card 2 has a rectangular shape indicating a longitudinal shape (those longer than the width of the print recording area) in a direction orthogonal to the transport direction of the print recording card 2. Also, the stirring plate 704 is
As shown in FIG. 6B, the radiant heat of the heater element 702 does not impinge on the print recording card 2 by having a rectangular shape corresponding to the opening 700 and being disposed to face the opening 700. At the same time, processing is performed to create a high-temperature air chamber inside the duct 701.

Here, since the stirring plate 704 only needs to operate as a resistance object to the blowing of the fan 703,
Various embodiments as illustrated in FIG. 7 can be employed. Also, as shown in FIG.
An air inlet 705 arranged in parallel with the opening 700 may be provided. This is because the ambient temperature at the place where the erasing device 60 is installed may be high or low, so when such an air intake 705 is provided and installed in a place where the environmental temperature is high, this air When the intake port 705 is used as it is and installed in a place where the environmental temperature is low, by closing the air intake port 705, it can be used in any place of the environmental temperature.
This enables the fan heater 605 to blow heated air having substantially the same temperature.

Incidentally, the eraser 60 actually has a cover 800 as shown in FIG.
Is used to cover the heated portion of the print recording card 2. Here, reference numeral 801 in the figure denotes the fan heater 60.
5 is a ventilation port for letting out heated air.

When adopting this configuration, the erasing device 6
Further, as shown in FIG. 10, when the temperature value of the heater plate 603 detected by the heater plate thermistor 607 is inputted as shown in FIG. With the input of the heater plate control mechanism 900 for controlling the AC power supplied to the heater element 604 and the air temperature of the fan heater 605 detected by the thermistor 606 for the fan heater, the temperature value is used as a print recording card. The fan heater control mechanism 901 that controls the AC power supplied to the heater element 702 of the fan heater 605 so that the temperature becomes about 105 ° C. required for the erasing process of No. 2 is adopted.

The heater plate control mechanism 900 includes, for example, a switch 902 such as an SSR (solid state relay) for controlling conduction and interruption of AC power supplied to the heater element 604 as shown in FIG. By controlling, A supplied to the heater element 604
For example, as shown in FIG. 11, when the temperature value detected by the heater plate thermistor 607 is lower than the target value of 105 ° C., the conduction time of the switch 902 is increased, When the temperature is high, duty control for shortening the conduction time of the switch 902 is performed so that the temperature of the heater plate 603 is controlled to 105 ° C.

The fan heater control mechanism 901 controls, for example, a switch 903 such as an SSR for controlling conduction / cutoff of an AC power supplied to the heater element 702 of the fan heater 605 as shown in FIG. This controls the AC power supplied to the heater element 702 of the fan heater 605. For example, FIG.
As shown in FIG. 1, when the temperature value detected by the thermistor for fan heater 606 is lower than the target value of 105 ° C., the conduction time of the switch 903 is lengthened, and when the temperature value is higher, the duty time of the switch 903 is shortened. By performing the control, the blowing temperature of the fan heater 605 becomes 10
It is controlled so as to be 5 degrees C.

In the erasing device 60 configured as described above,
According to the control processing of the heater plate control mechanism 900, the temperature of the heater plate 603 is controlled to be 105 ° C., whereby the upper surface of the print recording card 2 conveyed over the front guide plate 601 / the rear guide plate 602. Is heated to approximately 105 ° C.

On the other hand, in accordance with the control processing of the fan heater control mechanism 901, the blower temperature of the fan heater 605 becomes 105
Degree C, thereby controlling the front guide plate 6 near the opening 700 of the fan heater 605.
01 / The lower surface of the print recording card 2 conveyed on the rear guide plate 602 is heated to approximately 105 ° C.

With this heating configuration, the print recording card 2
Is heated to approximately 105 ° C. while being conveyed without receiving any pressing force, whereby the print recorded in the print recording area (in this embodiment, facing the heater plate 603) is printed. It will be erased.

In this way, the erasing device 6 of this embodiment
By using 0, the print recording card 2 is not scratched,
The prints recorded on the print recording card 2 can be efficiently erased without warping the print recording card 2.

Since the heater plate 603 to be controlled by the heater plate control mechanism 900 has a mass,
By executing the duty control shown in FIG. 11, the heater plate control mechanism 900 can control the temperature of the heater plate 603 to 105 ° C. with sufficient accuracy.

On the other hand, the fan heater control mechanism 90
The fan heater 605 to be controlled has no mass because the fan heater 605 to be controlled does not have the mass. Therefore, in some cases, the fan heater control mechanism 901 simply performs the duty control shown in FIG. Cannot be controlled to 105 ° C. with sufficient accuracy. In order to prevent this, as described above, by providing the stirring plate 704 in the duct 701 of the fan heater 605,
Although a high-temperature air chamber is created inside the duct 701, such measures alone may not be sufficient.

In particular, such a case may occur when an SSR with a zero cross is used as the switch 903 for controlling conduction / interruption of the AC power supplied to the heater element 702 of the fan heater 605. The SSR with a zero crossing is to process the instruction to prevent the noise from being generated even if there is a conduction instruction or a cutoff instruction until the input voltage becomes zero value. Since the heating of the heater element 702 of the heater 605 is delayed, the air blowing temperature of the fan heater 605 cannot be controlled to 105 ° C. with sufficient accuracy.

Such a problem can be solved by using the fan heater control structure of the present invention as shown in FIG. That is, in addition to the fan heater control mechanism 901 / switch 903 realizing the control configuration shown in FIG.
A rectifier 905 that performs full-wave rectification and outputs a half-wave rectified power supply and an SSR with a zero crossing, and selects a full-wave rectification output from the rectifier 905 and supplies the selected power to the heater element 702. A second power supply selection switch 907 which is composed of one power supply selection switch 906 and an SSR with a zero cross, selects half-wave rectification output from the rectifier 905, and supplies the half-wave rectification to the heater element 702.
And a power supply selection circuit 908 for controlling the first and second power supply selection switches 906 and 907.

The power supply selection circuit 908 is, specifically,
As shown in FIG. 13, thermistor 606 for fan heater
Is turned off when the detected temperature value becomes lower than the set lower limit value, the first power supply selection switch 906 is turned off.
First comparator 909 for setting the switch to the conduction mode
And a second comparator 910 that turns off when the temperature value detected by the fan heater thermistor 606 becomes lower than the set upper limit value, thereby setting the second power selection switch 907 to the conduction mode. ing.

In the fan heater control structure of the present invention configured as described above, the fan heater control mechanism 901 controls ON / OFF of the switch 903 so that the blower temperature value of the fan heater 605 becomes about 105 ° C. Thus, when adopting a configuration for controlling the power supplied to the heater element 702 of the fan heater 605, the power supply selection circuit 908 determines that the air temperature of the fan heater 605 is lower than the set lower limit. By setting the first power selection switch 906 to the conduction mode, the full-wave rectification output from the rectifier 905 is supplied to the fan heater 605, and the fan air temperature of the fan heater 605 is set higher than the set upper limit. When the temperature of the fan heater 605 is low, the second power selection switch 907 is set to the conduction mode, The half-wave rectified output from the rectifier 905 controls to power supply.

In other words, the power supply selection circuit 908
As shown in the figure, when the blower temperature of the fan heater 605 is lower than the lower limit, the full-wave rectification output from the rectifier 905 is supplied to the heater element 702 of the fan heater 605, and the blower temperature of the fan heater 605 becomes lower. When the temperature is between the upper limit and the upper limit, the half-wave rectification output from the rectifier 905 is supplied to the heater element 702 of the fan heater 605, and when the air blowing temperature of the fan heater 605 is higher than the upper limit, the fan heater control mechanism is provided. Even if 901 instructs power supply to the heater element 702 of the fan heater 605, processing is performed so as not to supply power.

As described above, in the fan heater control structure of the present invention shown in FIG. 12, when power is supplied to the heater element 702 of the fan heater 605, the power supply level is also varied to finely control the power supply. With this configuration, it is possible to control the blown air temperature of the fan heater 605 with high accuracy as compared with the case of simply following the duty control.

[0052]

As described above, according to the erasing device for a print recording card of the present invention, the erasing is performed by heating the print recording card capable of printing and erasing by heating. Furthermore, according to the compact configuration, the erasing process can be efficiently executed without damaging the print recording card.

Further, according to the fan heater control circuit of the present invention, it is possible to control the blower temperature of the fan heater with high accuracy as compared with the case of simply performing duty control.

[Brief description of the drawings]

FIG. 1 is a principle configuration diagram of the present invention.

FIG. 2 is a principle configuration diagram of the present invention.

FIG. 3 is a system configuration diagram of a print recording card processing system.

FIG. 4 is an embodiment of a erasing device.

FIG. 5 is an embodiment of a erasing device.

FIG. 6 is an explanatory diagram of a fan heater.

FIG. 7 is an explanatory diagram of a fan heater.

FIG. 8 is an explanatory diagram of a fan heater.

FIG. 9 is an embodiment of a erasing device.

FIG. 10 is an explanatory diagram of a control system of the erasing device.

FIG. 11 is an explanatory diagram of duty temperature control.

FIG. 12 is an embodiment of a fan heater control configuration of the present invention.

FIG. 13 is a circuit configuration diagram of a power supply selection circuit.

FIG. 14 is an explanatory diagram of a fan heater control process of the present invention.

FIG. 15 is an external view of a print recording card.

FIG. 16 is an explanatory diagram of a heating configuration using a fan heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Deletion device for print recording card 2 Print recording card 10 Conveying means 11 Guide plate means 12 Heater plate means 12a Plate plate 12b Heater 13 Fan heater means 13a Opening 13b Duct means 13c Heater element means 13d Fan means 13e Resistive object means 20 Fan heater control circuit 21 Rectifier 22 Main switch 23 First sub switch 24 Second sub switch 25 Main controller 26 Sub controller

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Tomitsu Motokura 98-2 Unoki-nu, Unoki-cho, Hebei-gun, Ishikawa Pref. 98-2 In PFU Co., Ltd. (72) Inventor Kokichi Nakatani Kouki, Unoki-cho, Hebei-gun, Ishikawa Prefecture 98-2 In PFU Co., Ltd. 98-2 No. 2 in PFU Co., Ltd. (72) Inventor Toshio Sasano Tono Chino Unoki-cho, Kawakita-gun, Ishikawa Pref. 98-2 No. 2 In PFU Co., Ltd. 98-2 Kifu Co., Ltd. (56) References JP-A-6-24129 (JP, A) 5908 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B41J 2/32 B41J 29/26 B41M 5/26 B42D 15/10

Claims (6)

(57) [Claims] The present invention relates to a erasing device for a printing record card that heats a printing record card capable of performing printing and erasing by heating, thereby carrying out the erasing. A printing plate card having a plate shape, disposed on one of the card surfaces of the print recording card to be conveyed by the conveying unit, and a heater plate unit for heating the card surface; Te, printing by blowing heated air against the recording card, e Bei a fan heater means for heating the cards face opposite to the heating surfaces of the heater plate means, and the fan heater means , The longitudinal shape in the direction perpendicular to the transport direction of the print recording card
Duct means having an opening as shown, and inside the duct means
Heater element means provided, and the heater element
The opening is provided at a position where the opening is viewed through the port means.
Fan means for blowing air toward the data element means,
Inside the duct means, provided opposed to the opening,
A resistor that acts as a resistive object to the air flow of the fan means.
A character erasing device for a print recording card , comprising: anti-object means . 2. The erasing device for a print record card according to claim 1, wherein the heater plate means is provided on a print surface side of the print record card.
A erasing device for a print recording card, wherein the erasing device is arranged so as to have a slight gap between the card surface and the printing surface side card surface. 3. The erasing device for a print recording card according to claim 1, wherein the resistance object means is configured to have a planar shape corresponding to the opening. Character device. 4. The eraser for a print recording card according to claim 1, wherein the duct means has an air intake arranged in parallel with the opening. A character erasing device for a print recording card. 5. A fan heater control circuit for controlling power supply to a heater element of a fan heater, comprising: rectifying means for performing full-wave rectification and outputting half-wave rectification of an AC power supply; Main switch means for switching power supply; first sub-switch means for controlling whether or not to supply the full-wave rectification output from the rectification means to the fan heater; and half-wave rectification output from the rectification means. A second sub-switch means for controlling whether or not power is supplied to the fan heater; and a main control means for controlling the operation of the main switch means in accordance with the blower temperature of the fan heater and a target value thereof while following the duty control. Control means, and sub-control means for controlling the operation of the first and second sub-switch means in accordance with the air temperature of the fan heater. A fan heater control circuit, comprising: 6. The fan heater control circuit according to claim 5, wherein the sub-control unit performs a power supply operation to the first sub-switch unit when the air temperature of the fan heater is lower than a prescribed lower limit. It indicated, when the lower than the upper limit value of the prescribed to control so as to instruct the power supply operation for the second sub-switch unit, a fan heater control circuit according to claim.