JP2006035567A - Image erasing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image erasing apparatus suitable for use in an indoor space. <P>SOLUTION: A lid case 2 is set to be openable to a body case 1. A lower heating plate 3 and an upper heating plate 4 are stored in the body case 1 and the lid case 2. Printed matter is put on a bundle in the body case 1. The lower heating plate 3 and the upper heating plate 4 hold the printed matter on the basis of the fact that the lid case 2 is operated in a close state. An image is formed to the printed matter with the use of an erasable image forming material. The image is erased on the basis of being heated from upper and lower both sides. In the case of this constitution, the need of consideration into handling of a solvent is eliminated, so that driving safe in the indoor space is enabled. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an image erasing apparatus that erases an image formed of an erasable image forming material.

Some image erasing apparatuses have a configuration in which an image forming material colored on paper is brought into contact with a solvent to remove the solvent from the paper.
JP 11-316527 A JP 2000-28450 A JP 2002-38039 A

The image erasing apparatus is not suitable for use in an indoor space since it is necessary to consider the handling of the solvent.
The present invention has been made in view of the above circumstances, and an object thereof is to provide an image erasing apparatus suitable for use in an indoor space.

  The image erasing apparatus according to any one of claims 1 to 6, comprising: a heating unit that erases an image formed on the medium based on heating the medium; a cooling unit that cools the medium; the heating unit and the cooling unit. It is characterized in that it is provided with a control means for driving control.

  According to the image erasing apparatus of the first to sixth aspects, the image formed on the medium is erased based on heating the medium. For this reason, since it is not necessary to consider the handling of the solvent, it is suitable for use in an indoor space.

<Example 1>
As shown in FIG. 1, a lid case 2 is detachably mounted on the main body case 1, and a lower heating plate 3 and an upper heating plate 4 are accommodated in the main body case 1 and the lid case 2. . The main body case 1 is used to put a printed material such as paper corresponding to a medium on the bundle. The lower heating plate 3 and the upper heating plate 4 are arranged so that the printed material is placed on the basis that the lid case 2 is operated in a closed state. Sandwich. In this printed matter, an image is formed using an erasable image forming material, and the image forming material is colored by the action of the color developing compound and the developer. When this image forming material is heated, the binder resin and the color developing compound in the image forming material are preferentially compatible, and when the color erasing agent is used, the color developer and the color erasing agent react with each other. And decolorize. That is, the image erasing apparatus erases an image based on heating the printed material from both the upper and lower sides. The detailed configuration of the image erasing apparatus will be described below.

The main body case 1 is constructed by joining a plurality of metal plates into a rectangular box shape whose upper surface is open, and is mounted in the main body case 1 at four corners as shown in FIG. The base 5 is fixed. Each of the mounting bases 5 is made of a synthetic resin, and a head portion 6 having a small diameter is integrally formed at the upper end of each mounting base 5.
A heat insulating plate 7 is accommodated in the main body case 1, and through holes are formed at four corners of the heat insulating plate 7. The head portion 6 of the mounting base 5 is inserted into each of these through holes, and the four corners of the heat insulating plate 7 are supported by the mounting base 5. The heat insulating plate 7 is made of a metal plate that divides the inside of the main body case 1 into an upper erasing chamber 8 and a lower heat insulating chamber 9. A metal heat insulating case 10 is accommodated in the upper erasing chamber 8. Yes. The heat insulating case 10 has a rectangular box shape whose upper surface is open, and is fixed to the upper end surfaces of the four head portions 6.

  A lower spring guide 11 is integrally formed on each mount 5. A heater spring 12 made of a compression coil spring is fitted to the outer peripheral surface of each lower spring guide 11, and the upper end portion of each heater spring 12 penetrates the heat insulating plate 7 and protrudes into the heat insulating case 10. A metal lower heating plate 3 is accommodated in the heat insulating case 10, and upper spring guides 13 are fixed to the four corners of the lower heating plate 3. These upper spring guides 13 are inserted into the heater spring 12, and the lower heating plate 3 is elastically supported by the four heater springs 12.

  A lower heater presser 14 is screwed to the lower surface of the lower heating plate 3. A lower heater 15 is interposed between the lower heater presser 14 and the lower heating plate 3, and the lower heater 15 is in close contact with the lower heating plate 3 by the pressing force of the lower heater presser 14. The lower heating plate 3, the lower heater presser 14 and the lower heater 15 constitute a lower heating source, and the temperature of the lower heating plate 3 is increased based on the heat generated by the lower heater 15. As shown in FIG. 1, a metal paper tray 16 is placed on the upper surface of the lower heating plate 3. The paper tray 16 has a rectangular dish shape whose upper surface is open, and functions as an input container into which printed matter is input.

  As shown in FIG. 2, a lid case 2 is attached to the rear end of the main body case 1 so as to be rotatable about a horizontal shaft 2 a, and the lid case 2 has a plurality of pedestals 17 projecting downward. Is formed. The lid case 2 opens and closes the upper surface of the main body case 1, and a metal upper heat insulating case 18 is fixed to the plurality of bases 17. The upper heat insulating case 18 has a rectangular box shape with an open bottom surface, and a spatial heating chamber is formed between the lower heat insulating case 10 and the upper heat insulating case 18 when the lid case 2 is closed.

  A metal upper heating plate 4 is fixed in the upper heat insulating case 18 via a plurality of spacers 19, and the printed matter comes into contact with the upper heating plate 4 by the spring force of the heater spring 12 when the lid case 2 is closed. . An upper heater presser 20 is fixed to the upper surface of the upper heating plate 4. An upper heater 21 is interposed between the upper heater presser 20 and the upper heating plate 4, and the upper heater 21 is in close contact with the upper heating plate 4 by the pressing force of the upper heater presser 20. The upper heating plate 4, the upper heater presser 20 and the upper heater 21 constitute an upper heating source. The upper heating plate 4 is heated based on the heat generated by the upper heater 21, and the printed matter in the paper tray 16. Is heated from above. Reference numeral 23 denotes a heating means composed of the lower heater 15 and the upper heater 21.

  An upper temperature sensor 22 (see FIG. 6) and a lower temperature sensor 79 (see FIG. 6) made of a thermistor are fixed to the upper heater presser 20 and the lower heater presser 14. The temperature sensing part of the sensor 79 is in contact with the upper heater 21 and the lower heater 15. The upper temperature sensor 22 and the lower temperature sensor 79 constitute temperature detecting means, and output electrical signals at levels corresponding to the surface temperature of the upper heater 21 and the surface temperature of the lower heater 15.

  A duct 24 is fixed to the heat insulating plate 7, and a cylindrical fan casing 25 is fixed to the duct 24. A fan motor 26 (see FIG. 6) is fixed to the fan casing 25, and an axial flow type cooling fan 27 is fixed to the rotating shaft of the fan motor 26 as shown in FIG. The cooling fan 27 is housed in the fan casing 25, and an air inlet 28 is formed in the bottom plate of the main body case 1 so as to be positioned below the cooling fan 27. The intake port 28 is composed of a plurality of through holes. The cooling fan 27 draws outside air into the main body case 1 from the intake port 28 based on the driving of the fan motor 26 and blows air into the heating chamber through the duct 24. The printed matter in the heating chamber is cooled on the basis of this. Reference numeral 29 denotes a cooling fan device composed of a fan motor 26 and a cooling fan 27, and the cooling fan device 29 corresponds to a cooling means.

  A synthetic resin front cover 30 is detachably attached to the front end of the main body case 1. A space-like electrical chamber 31 is formed between the front cover 30 and the front plate of the main body case 1, and the electrical chamber 31 is closed and opened based on the attachment / detachment of the front cover 30. As shown in FIG. 3, a mechanism plate 32 is accommodated in the electrical equipment chamber 31. The mechanism plate 32 is fixed to the front plate of the main body case 1, and a substantially L-shaped switch lever 33 is mounted on the mechanism plate 32 so as to be rotatable about a shaft 34. The switch lever 33 has a projecting operation portion 35, and a lever spring 36 is mounted between the switch lever 33 and the mechanism plate 32. The lever spring 36 is a tension coil spring, and the switch lever 33 is urged in the direction of the arrow by the spring force of the lever spring 36.

  A lock ring 37 is fixed to the lid case 2. The lock ring 37 enters the electrical compartment 31 of the main body case 1 when the lid case 2 is closed. When the lock ring 37 enters the electrical compartment 31, the switch lever 33 is tilted by the lock ring 37. The switch lever 33 is rotated horizontally by the spring force of the lever spring 36 when the lock ring 37 is released from the electrical equipment chamber 31. That is, the lock ring 37 corresponds to a lever operating means for operating the switch lever 33, and the switch lever 33 is in a horizontal state and an inclined state when the lid case 2 is opened and closed.

  A lid switch 38 made of a micro switch is fixed to the mechanism plate 32. When the lid case 2 is closed, the lid switch 38 is turned off based on the fact that the operating portion 35 of the switch lever 33 is separated from the plunger of the lid switch 38. In the opened state of the lid case 2, the lid switch 38 is turned on based on the operation portion 35 of the switch lever 33 pressing the plunger of the lid switch 38 upward. That is, the lid switch 38 changes its electrical state in accordance with the opening / closing of the lid case 2 and corresponds to an opening / closing detection means for detecting the opening / closing of the lid case 2.

  A lock case 39 is fixed to the mechanism plate 32, and a lock motor 40 is accommodated in the lock case 39 as shown in FIG. The lock motor 40 is a geared motor with a built-in reduction gear mechanism, and a circular rotating plate 42 is fixed to a rotation shaft 41 of the lock motor 40. A pin-shaped cam 43 is fixed to the outer peripheral portion of the rotating plate 42, and the cam 43 moves in the circumferential direction around the rotating shaft 41 based on the drive of the lock motor 40.

  A cylindrical bearing 44 is formed on the lock case 39, and an annular stopper 45 is formed at the tip of the bearing 44. A plunger 46 is slidably fitted to the inner peripheral surface of the bearing 44, and a columnar lock pin 47 and a columnar spring receiver 48 are fixed to the tip of the plunger 46. One end of a lock spring 49 made of a compression coil spring is fitted to the outer peripheral surface of the spring receiver 48, and the other end of the lock spring 49 is fitted to the inner peripheral surface of a cylindrical spring receiver 50. Yes. The spring receiver 50 is fixed in the lock case 39, and the plunger 46 is biased by the spring force of the lock spring 49.

  A driven plate 51 is fixed to the plunger 46. This follower plate 51 has a square through hole 52, and a cam 43 is inserted into the through hole 52. The inner surface of the through hole 52 functions as a cam surface. As shown in FIG. 4A, when the cam 43 is separated from the cam surface 52, the distal end surface of the plunger 46 is the spring force of the lock spring 49. Thus, it comes into contact with the stopper 45 of the lock case 39. In this state, the lock pin 47 is held in a locked state protruding from the lock case 39 and is engaged in the lock ring 37 of the lid case 2 as shown in FIG. In the engaged state between the lock pin 47 and the lock ring 37, the lid case 2 is locked in the closed state, and the opening operation of the lid case 2 is prohibited.

  When the rotary shaft 41 of the lock motor 40 rotates in the direction of the arrow in FIG. 4 while the lock pin 47 is locked, the cam 43 presses the cam surface 52 and locks the lock pin 47 as shown in FIG. The spring 49 is retracted in the lock case 39 against the spring force. In this state, the lock pin 47 is restrained so as not to protrude based on the cam surface 52 coming into contact with the cam 43 by the spring force of the lock spring 49, and is held in the unlocked state retracted into the lock case 39. In the unlocked state of the lock pin 47, the engagement between the lock pin 47 and the lock ring 37 is released, and the opening operation of the lid case 2 is allowed.

  A stationary contact 53 made of a leaf spring and a movable contact 54 made of a leaf spring are accommodated in the lock case 39. The fixed contact 53 and the movable contact 54 constitute a lock switch 55 (see FIG. 6). When the lock pin 47 is in a locked state, as shown in FIG. 54 is brought into contact with the fixed contact 53 based on the pressing operation. The switch operation unit 56 is formed on the driven plate 51. When the lock pin 47 is unlocked, the switch operation unit 56 is separated from the movable contact 54 as shown in FIG. The contact 54 is separated from the fixed contact 53 by a restoring force. That is, the lock switch 55 detects the advance / retreat of the lock pin 47 and is turned on and off when the lock pin 47 is locked and unlocked.

  As shown in FIG. 2, a recess 57 is formed in the bottom plate of the main body case 1, and a control board 58 is disposed above the recess 57. The control board 58 is fixed to the bottom plate of the main body case 1, and a control device 59 mainly composed of a microcomputer is mounted on the upper surface of the control board 58 as shown in FIG. The control device 59 includes a CPU 60, a ROM 61, and a RAM 62, and corresponds to a control unit that drives and controls the lower heater 15, the upper heater 21, the fan motor 26, and the lock motor 40.

  As shown in FIG. 1, an operation panel 63 is formed at the center in the left-right direction of the front cover 30. The operation panel 63 refers to an inclined surface portion that is inclined backward as it goes upward, and an operation sheet 64 is fixed to the front surface of the operation panel 63 as shown in FIG. A power LED 65, an erasing LED 66, a cooling LED 67, and a lock LED 68 are fixed to the operation panel 63. The power LED 65, the erasing LED 66, the cooling LED 67, and the lock LED 68 constitute an operation indicator 69 (see FIG. 6) corresponding to the operation notification means, and the control device 59 controls lighting of the power LED 65 to the lock LED 68. Based on this, the user is informed of the driving details. The lock LED 68 corresponds to a temperature raising notification means.

  As shown in FIG. 5, an on switch 70 and an off switch 71 are attached to the operation panel 63. The on switch 70 and the off switch 71 are self-returning push switches, and are interposed in the power supply path of the power circuit 72 as shown in FIG. The power circuit 72 generates driving power for the lower heater 15, the upper heater 21, the fan motor 26, the lock motor 40, the control device 59, the power LED 65 to the lock LED 68, and when the on switch 70 is operated, the power circuit The power supply path 72 is closed, and the control device 59 is activated based on the driving power supplied from the power supply circuit 72 to the control device 59. A normally open contact 74 of the power supply relay 73 is interposed in the power supply path of the power supply circuit 72, and the control device 59 closes the contact 74 based on exciting the coil 75 of the power supply relay 73 immediately after starting. Turn on the main power. When the switch 71 is operated with the main power on, the power supply path of the power circuit 72 is opened, and the control device 59 stops based on the main power being cut off.

  As shown in FIG. 7, an upper thermal switch 76 and a lower thermal switch 78 are interposed in the power supply path of the power supply circuit 72. The upper thermal switch 76 and the lower thermal switch 78 are mounted on the upper heater retainer 20 and the lower heater retainer 14, and the surface temperature of the upper heater 21 and the surface temperature of the lower heater 15 are abnormal values (specifically, 200 It operates based on reaching (C) and shuts off the main power source based on opening the power supply path.

  As shown in FIG. 5, a start switch 77 is attached to the operation panel 63. The start switch 77 corresponds to an operation means, and the control device 59 sets an operation course based on an output signal from the start switch 77, and the lower heater 15, the upper heater 21, and the like based on the setting result of the operation course. An image erasing operation is executed by drivingly controlling the fan motor 26 and the lock motor 40. This processing is performed by the CPU 60 of the control device 59 based on a control program recorded in advance in the ROM 61, and the RAM 62 functions as a work area. Hereinafter, a control program of the control device 59 will be described.

The CPU 60 of the control device 59 turns on the main power based on exciting the coil 75 of the power relay 73 in step S1 in FIG. 8, and turns on the main power based on lighting the power LED 65 in step S2. To inform. In step S3, the power off time measurement operation is started. In step S4, the operation state of the start switch 77 is determined.
When the CPU 60 detects that the start switch 77 is not operated in step S4, the CPU 60 compares the measurement result of the power-off time with the upper limit value recorded in advance in the ROM 61 in step S5. Here, when it is detected that the measurement result of the power-off time has reached the upper limit value, the process proceeds to step S36 in FIG. 9 and the main power supply is shut off based on the extinguishing of the coil 75 of the power supply relay 73. That is, when the start switch 77 is not operated even after the power-off time has elapsed from the operation of the on switch 70, the main power supply is automatically shut off.

  When the CPU 60 detects the operation of the start switch 77 in step S4 of FIG. 8, the CPU 60 starts the operation for measuring the start waiting time in step S6, and initially sets the driving course to the erase course in step S7. Then, in step S8, the user is notified of the setting of the erase course based on turning on the erase LED 66 and the cooling LED 67, and in step S9, the measurement result of the start waiting time is compared with the upper limit value recorded in advance in the ROM 61. Here, when it is detected that the measurement result of the start waiting time has not reached the upper limit value, the process proceeds to step S10, and the operation state of the start switch 77 is determined.

  When the CPU 60 detects the operation of the start switch 77 in step S10, it determines the setting state of the driving course in step S11. For example, when it is detected that the driving course is set as the erasing course, the driving course is changed from the erasing course to the cooling course in step S12, and the erasing LED 66 is turned off in step S13. In this state, the cooling LED 67 is turned on to notify the user of the setting of the cooling course.

  When the CPU 60 detects that the driving course is set as the cooling course in step S11, the CPU 60 changes the driving course from the cooling course to the erasing course in step S14, and turns on the erasing LED 66 in step S15. In this state, the erasing LED 66 and the cooling LED 67 are turned on to notify the user of the setting of the erasing course. That is, the erase course and the cooling course are alternately switched every time the start switch 77 is operated, and are determined based on the elapse of the start waiting time.

When the CPU 60 detects that the start waiting time measurement result has reached the upper limit value in step S9, it determines the driving course setting state in step S16. Here, when it is detected that the erase course is set, the process proceeds to step S17, and the opening / closing of the lid case 2 is determined based on the output signal from the lid switch 38.
When the CPU 60 detects that the lid case 2 is closed in step S17, the lock pin 47 protrudes into the locked state based on driving the lock motor 40 in step S18, and locks the lid case 2 in the closed state. . In step S19, the lock LED 68 is blinked to notify the user that the lid case 2 is locked in the closed state. That is, the lock pin 47 is moved from the unlocked state to the locked state on condition that the lid case 2 is closed.

  When the CPU 60 blinks the lock LED 68 in step S19, the CPU 60 drives the lower heater 15 and the upper heater 21 with the same temperature rising pattern recorded in advance in the ROM 61 in step S20, and blinks the erase LED 66 in step S21. Inform the user of the start of the erase course. This temperature increase pattern is for continuously supplying power to the lower heater 15 and the upper heater 21, and the lower heater 15 and the upper heater 21 are driven by the temperature increase pattern as shown in FIG. The temperature rises based on this.

  When the erase LED 66 blinks in step S21 in FIG. 8, the CPU 60 sets the temperature of the upper heater 21 and the temperature of the lower heater 15 based on the output signal from the upper temperature sensor 22 and the output signal from the lower temperature sensor 79 in step S22. The detected temperature is compared with the erase temperature (specifically, 120 ° C.) recorded in advance in the ROM 61. When it is detected that both the detected temperature of the upper heater 21 and the detected temperature of the lower heater 15 have reached the erasing temperature, the process proceeds to step S23, and the control mode is validated. In the effective state of this control mode, the upper heater 21 and the lower heater 15 are on / off controlled based on the output signal from the upper temperature sensor 22 and the output signal from the lower temperature sensor 79 so that the upper heating plate 4 and the lower heating plate 3 are constant. Is maintained at the erase temperature.

When the control mode is turned on in step S23, the CPU 60 starts the erase time measurement operation in step S24 of FIG. 9, and compares the erase time measurement result with the upper limit value recorded in advance in the ROM 61 in step S25. That is, the erasing time is started on the condition that both the lower heating plate 3 and the upper heating plate 4 reach the same erasing temperature.
When the CPU 60 detects that the erase time measurement result has not reached the upper limit value in step S25, the CPU 60 detects the detected temperature of the upper heater 21 and the detected temperature of the lower heater 15 in the forced cooling temperature (preliminarily recorded in the ROM 61) (step S26). Specifically, it is compared with 150 ° C. For example, when both the detected temperature of the upper heater 21 and the detected temperature of the lower heater 15 reach the upper limit without reaching the forced cooling temperature, the process proceeds from step S25 to step S27, and the lower heater 15 and the upper heater 21 are moved. Turn off. In step S28, the erase LED 66 is turned off to notify the user of the end of the erase operation.

When the erase LED 66 is turned off in step S28, the CPU 60 starts the cooling operation based on turning on the fan motor 26 in step S29, and the user is performing the cooling operation based on blinking the cooling LED 67 in step S30. Inform you. During this cooling operation, cooling air is sent from the cooling fan 27 into the heating chamber, and the printed matter in the heating chamber is cooled.
When the CPU 60 blinks the cooling LED 67 in step S30, the detected temperature of the upper heater 21 and the detected temperature of the lower heater 15 are compared with the cooling temperature recorded in advance in the ROM 61 in step S31. When it is detected that both the detected temperature of the upper heater 21 and the detected temperature of the lower heater 15 have dropped to the cooling temperature, the process proceeds to step S32, and the cooling operation is finished based on turning off the fan motor 26. And it transfers to step S33 and notifies a user of completion | finish of cooling operation based on turning off cooling LED67. That is, the cooling operation is stopped on condition that both the temperature of the upper heater 21 and the temperature of the lower heater 15 are lowered to the cooling temperature.

  When the cooling LED 67 is turned off in step S33, the CPU 60 retracts the lock pin 47 to the unlocked state based on driving the lock motor 40 in step S34, and the user is turned off based on turning off the lock LED 68 in step S35. The unlocking of the lid case 2 is notified. Then, in step S36, the coil 75 of the power relay 73 is turned off, and the processing is finished based on shutting off the main power (auto power off).

  When the CPU 60 detects that the cooling course is set in step S16 in FIG. 8, the CPU 60 starts the cooling operation based on turning on the fan motor 26 in step S29 in FIG. 9, and blinks the cooling LED 67 in step S30. . When it is detected in step S31 that the upper heater 21 and the lower heater 15 have dropped to the cooling temperature, the fan motor 26 is turned off in step S32, and the cooling LED 67 is turned off in step S33. Next, the lock of the lid case 2 is released in step S34, and the lock LED 68 is turned off in step S35.

  That is, when the user operates the off switch 71 during the erasing operation, the main power supply is shut off while the lid case 2 is locked. In this case, the main power supply is turned on again based on the operation of the on switch 70, and if the start switch 77 is pressed twice within the start waiting time, the cooling course is set and the cooling operation can be performed without performing the erasing operation. Be started. Then, since the lid case 2 is unlocked in conjunction with the end of the cooling operation, the printed matter can be additionally charged or taken out in a cooled state based on the opening operation of the lid case 2.

  When the CPU 60 detects that at least one of the upper heater 21 and the lower heater 15 has reached the forced cooling temperature in step S26 of FIG. 9, the CPU 60 performs the erasing operation based on turning off the lower heater 15 and the upper heater 21 in step S27. The operation is forcibly stopped halfway, and the erase LED 67 is turned off in step S28. Then, the cooling operation is started in step S29, and the lid case 2 is unlocked in step S34. That is, when at least one of the lower heater 15 and the upper heater 21 is abnormally heated during the erase operation, the heating chamber reaches the forced cooling temperature. In this case, the erasing operation is immediately stopped, and the heating chamber is forcibly cooled to the cooling temperature. And the opening operation of the lid case 2 is permitted in the cooling state in the heating chamber.

According to the first embodiment, the following effects are obtained.
The image formed on the printed material was erased based on heating the printed material. For this reason, since it is not necessary to consider the handling of the solvent, the operation can be performed safely in the indoor space.
An operation course is set according to the operation content of the start switch 77, and the lower heater 15, the upper heater 21, the fan motor 26, and the lock motor 40 are driven and controlled in a pattern according to the setting result of the operation course. For this reason, when the cooling course is set, the cooling operation is performed without performing the erasing operation, and the lid case 2 is unlocked in conjunction with the end of the cooling operation, so the standby until the lid case 2 is unlocked The time is shorter than when the cooling operation is performed after the erasing operation. Therefore, when the user designates the cooling course, it is possible to shorten the waiting time when the printed material is additionally input into the paper tray 16 or the printed material is taken out from the paper tray 16.

An erase course and a cooling course were set according to the number of times the start switch 77 was operated. For this reason, it is not necessary to provide a switch for each erasing course and cooling course, so that the configuration is simplified.
An operation indicator 69 for displaying the progress of the operation is provided. For this reason, since the user can know the present driving | operation content, the convenience improves.

  The lock LED 68 blinks until the detected temperature of the lower temperature sensor 79 and the detected temperature of the upper temperature sensor 22 drop to the cooling temperature after the lower heater 15 and the upper heater 21 are driven, and the lid case 2 is locked in the closed state. . For this reason, since the user cannot open the lid case 2, safety is improved. Moreover, it can be known from the blinking of the lock LED 68 that the printed matter has been heated to a temperature higher than the cooling temperature.

Since the upper heater 21 and the lower heater 15 are stopped based on the erasing time after both the detected temperature of the upper temperature sensor 22 and the detected temperature of the lower temperature sensor 79 reach the erasing temperature, the upper temperature sensor It is necessary to set the total operation time considering that the temperature rise time (see FIG. 10) until both the detected temperature 22 and the detected temperature of the lower temperature sensor 79 reach the erasing temperature varies due to the influence of the outside air temperature. Disappears.
<Example 2>
As shown in FIG. 11, the operation panel 63 is equipped with a course switch 80 corresponding to the operation means, and the control device 59 operates in accordance with the number of times of operation of the course switch 80. The course is selectively set, and the erasure time is set to a short time, a standard time, or a long time based on the setting result of the driving course.

According to the second embodiment, the erasing time is adjusted by designating the operation course according to the number of printed materials. For this reason, since the image can be erased in a short time according to the number of printed materials, the driving efficiency is improved.
In the first to second embodiments, the heating of the printed matter is notified using the lock LED 68, but the present invention is not limited to this, and may be notified based on, for example, blinking a dedicated high-temperature LED. .

In the first to second embodiments, both the surface temperature of the lower heater 15 and the surface temperature of the upper heater 21 are used as control data. However, the present invention is not limited to this. For example, the surface temperature of the lower heater 15 is used. Either the surface temperature of the upper heater 21 or the room temperature of the heating chamber may be used.
In the said 1st-2nd Example, although the driving | running | working progress state was alert | reported with light, it is not limited to this, For example, you may alert | report with an image | video or a sound.

  In the said 1st-2nd Example, although it alert | reported by light that the printed matter was high temperature, it is not limited to this, For example, you may alert | report by an image | video or a sound.

The figure which shows 1st Example of this invention (The perspective view which shows the external appearance of an image erasing apparatus) Side view showing the internal configuration of the image erasing device with the mechanism plate removed Front view showing the internal configuration of the image erasing device Front view showing the internal configuration of the door lock mechanism (a is a diagram showing a locked state, b is a diagram showing an unlocked state) Diagram showing the operation panel Block diagram showing electrical configuration Diagram showing power supply path Flow chart showing control contents of control device Flow chart showing control contents of control device Diagram showing the relationship between erase time and erase temperature FIG. 5 equivalent diagram showing a second embodiment of the present invention.

Explanation of symbols

22 is an upper temperature sensor (temperature detection means), 23 is a heating means, 29 is a cooling fan device (cooling means), 59 is a control device (control means), 68 is a lock LED (temperature increase notification means), and 69 is an operation display. , 77 is a start switch (operation means), 79 is a lower temperature sensor (temperature detection means), and 80 is a course switch (operation means).

Claims (6)

Heating means for erasing an image formed on the medium based on heating the medium;
Cooling means for cooling the medium;
Operation means for specifying a driving course;
An image erasing apparatus comprising: a control unit that drives and controls the heating unit and the cooling unit according to a setting result of the operation course.   2. The image erasing apparatus according to claim 1, wherein the operation means designates an operation course according to the number of operations.   The image erasing apparatus according to claim 1, wherein the operation unit designates an operation course according to the amount of the medium. Heating means for erasing an image formed on the medium based on heating the medium;
Cooling means for cooling the medium;
Control means for driving and controlling the heating means and the cooling means;
An image erasing apparatus comprising: an operation notifying unit that notifies an operation progress state. Heating means for erasing an image formed on the medium based on heating the medium;
Cooling means for cooling the medium;
Control means for driving and controlling the heating means and the cooling means;
An image erasing apparatus comprising: a temperature raising notifying unit for notifying that the temperature of the medium is higher than a set temperature. Heating means for erasing an image formed on the medium based on heating the medium;
Control means for driving and controlling the heating means;
Cooling means for cooling the medium;
Temperature detecting means for detecting the temperature of the heating means,
The image erasing apparatus, wherein the control unit stops driving the heating unit based on a lapse of a set time after the detection result of the temperature detection unit reaches a set temperature.

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