JP2003246491A - Recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the influence of heat accumulation by the heat of a print erasing means or a printing means in a recording device using a reversible thermosensitive recording medium. <P>SOLUTION: A right side plate 10A of a device body 10 is provided with a fan 72 for cooling a conveyance guide member 7 connecting an erasing means to the printing means. Vent holes 10A-1, 10B-1 are formed in the right side plate 10A and a left side plate 10B respectively, and a slit-like vent hole 7a-1 is formed in an upper guide 7a of the conveyance guide member 7. The reversible thermosensitive recording medium passing through the conveyance guide member 7 is cooled with an air current S from heat added by the print erasing means, and arrives in the cooled state at the printing means. The fan 72 is disposed in a position where it can cool a thermal head 39 of the printing means. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording device (image forming device) using a reversible thermosensitive recording medium capable of repeatedly printing (image formation).

[0002]

2. Description of the Related Art A recording apparatus of this type is generally called an RWP (rewritable printer) and has a thermoreversible (Therm
Those using a reversible thermosensitive recording medium such as an o-Chromic) film have been put into practical use. The thermoreversible film has a recording layer provided with a leuco dye and a color developer.
It has rewritable characteristics as shown in. When the decolored state (A) is heated to, for example, 180 ° C., the leuco dye molecules are melted to develop a color (B), and when rapidly cooled in this state, the leuco dye molecules are agglomerated while coloring and the colored state is fixed (C). When heated to, for example, 120 to 160 ° C. in the color-developed state, the aggregation state collapses and the developer crystallizes by self-aggregation force (D), repels the leuco dye (E), and returns to the decolored state (A). The erasing temperature and the developing temperature differ depending on the constituent material of the film. Corresponding to the characteristics of this thermoreversible film, the recording device
It has a print erasing means for heating and erasing prints, and a printing means for heating and printing. As a printing unit, a configuration is known in which a thermal head is pressed against a platen roller.

[0003]

Since the reversible thermosensitive recording medium is used as the recording medium in this type of recording apparatus, the print erasing means and the printing means have a heat source. The reversible thermosensitive recording medium to which heat is applied by the print erasing means reaches the printing means while holding the heat, so that the temperature around the printing means rises as the number of printed sheets increases, which adversely affects the printing function of the printing means. I have a concern. That is, the printing means sets an appropriate printing temperature, but there is a concern that it is difficult to precisely set the printing temperature due to the accumulation of heat carried by the reversible thermosensitive recording medium. Further, there is a concern that the functions of the print erasing means and the printing means may be impaired due to the heat storage inside the device of the print erasing means and the heat emitted from the printing means.

Therefore, the main object of the present invention is to provide a recording apparatus which can suppress the influence of heat storage due to heat of the print erasing means or the printing means.

[0005]

In order to achieve the above object, in the invention described in claim 1, the recording medium feeding means for feeding the reversible thermosensitive recording medium and recorded on the reversible thermosensitive recording medium. In a recording device having a print erasing means for erasing print contents and a printing means for printing on a reversible thermosensitive recording medium, a conveyance guide for guiding conveyance of the reversible thermosensitive recording medium between the print erasing means and the printing means. Members are provided,
The configuration is such that it has an air flow forming means for cooling the conveyance guide member.

According to a second aspect of the present invention, in the recording apparatus according to the first aspect, the transport guide member is provided with a ventilation hole.

According to the invention of claim 3, claim 1 or 2
In the recording device described above, a configuration is adopted in which a vent hole is formed in the side plate of the device body.

According to a fourth aspect of the invention, in the recording apparatus according to the third aspect, a side surface of the transport guide member corresponding to the ventilation hole is opened.

According to the invention of claim 5, claims 1 to 4
In the recording apparatus described in any one of 1) to 1), a ventilation hole is formed in the exterior frame of the apparatus main body.

According to the invention of claim 6, claims 1 to 5 are provided.
In the recording apparatus according to any one of above,
The apparatus has a platen roller that conveys a reversible thermosensitive recording medium and a thermal head that is in pressure contact with the platen roller, and the air flow forming means is arranged so as to also cool the thermal head.

According to the invention of claim 7, claims 1 to 6 are provided.
In the recording apparatus according to any one of the above, the transport guide member is formed of a material that suppresses the generation of static electricity,
Is adopted.

According to the present invention, recording medium feeding means for feeding the reversible thermosensitive recording medium, print erasing means for erasing the print content recorded on the reversible thermosensitive recording medium, and reversible thermosensitive recording. In a recording apparatus having a printing unit for printing on a medium, a transport guide member for guiding the transport of a reversible thermosensitive recording medium is provided between the print erasing unit and the printing unit, and the transport guide member is at least the print erasing unit. The structure is such that the means side is made of a material having low thermal conductivity.

According to a ninth aspect of the invention, recording medium feeding means for feeding the reversible thermosensitive recording medium, print erasing means for erasing the print content recorded on the reversible thermosensitive recording medium, and reversible thermosensitive recording. In a recording apparatus having a printing means for printing on a medium, a transportation guide member for guiding the transportation of the reversible thermosensitive recording medium is provided between the printing erasing means and the printing means, and the transportation guide member has heat resistance. It is made of a single material.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS. First, an overview of the overall configuration of the recording device 2 in this embodiment will be described with reference to FIG. The recording device 2 includes a paper feeding means 4 as a feeding means for feeding a rewritable paper 3 as a reversible thermosensitive recording medium, and a print erasing means 5 provided below the paper feeding means 4.
A printing unit 6, a transport guide member 7 as a cooling zone connecting the print erasing unit 5 and the printing unit 6, a cooling roller pair 8 as a discharging member for transporting the rewritable paper 3 that has passed through the printing unit 6, and the discharging A pair of paper discharge rollers 9 as a member, a device main body 10 that supports the paper feeding unit 4, the print erasing unit 5, and the like, and an openable and closable unit provided on the device main body
A front cover 11 that opens the printing means 6 and the paper discharge area, a pressing means 12 provided between the front cover 11 and the printing means 6, and a motor 1 that is a drive source for elements other than the paper feeding means 4.
It has 3 mag.

As shown in FIG. 2, the paper feeding means 4 has a pickup roller 14 and a feed roller 15, and these rollers are driven by a motor 16. The idler gear 18 meshes with the gear 17 fixed to the rotary shaft 16 a of the motor 16, and the rotary shaft 1 of the idler gear 18
The pickup roller 14 is attached to the gear 19 fixed to 8a.
The gear 20 that rotates in synchronization with the gear 21 and the gear 21 that rotates in synchronization with the feed roller 15 mesh with each other. Reference numeral 22 indicates a conveyance path of the rewritable paper 3. The print erasing means 5 has a receiving port 23 for receiving the rewritable paper 3 at the top.
It has a housing 23 having a discharge port 23b for the rewritable paper 3 at the bottom. A heater roller 24 as a heating member is provided in the housing 23.
A pressure roller 25 as a drive roller that is in pressure contact with the heater roller 24, and a thermistor 26 as a temperature detection unit that detects the temperature of the heater roller 24 are provided. The heater roller 24 has a halogen heater 27 as a heat source inside.

The rewritable paper 3 is the heater roller 2
While being nipped and conveyed by the pressure roller 4 and the pressure roller 25, the heater roller 24 heats it to a decoloring temperature and erases the print content. The ROM of the control means (not shown) stores a relational data table between the kind of material of the rewritable paper 3 and an appropriate decoloring temperature which is obtained in advance by experiments (including computer simulation), and the operation panel (not shown) is stored. When the type of the rewritable paper 3 is input by the input means such as or the type of the rewritable paper 3 is automatically detected, the control means selects the erasing temperature corresponding to the input type or the automatically detected type. , And controls the power supply to the halogen heater 27 based on the detection information of the thermistor 26. The configuration of the print erasing means 5 may be a belt system in which the pressure roller is pressed against an endless belt stretched between the heater roller and the roller, instead of the system in which the heater roller 24 and the pressure roller 25 are pressed against each other.

In the present embodiment, one motor 13 drives the components other than the sheet feeding means 4.
This will be described with reference to FIG. A pulley 28 fixed to the rotary shaft of the motor 13 drives a pulley 30 to rotate via a belt 29. A gear 31 that rotates synchronously with the pulley 30 meshes with a gear (not shown) that rotates synchronously with the pressure roller 25 of the print erasing means 5, and thereby the nipping and conveying force of the print erasing means 5 is obtained. The gear 31 meshes with the idler gear 32, and the idler gear 32 meshes with the idler gear 33. The idler gear 33 meshes with the gear 34, and the gear 34 rotates synchronously with the gear 35.
The gear 35 meshes with an idler gear 36, and the idler gear 36 is a platen roller 37 that constitutes the printing unit 6.
Is engaged with a gear (not shown) of the electromagnetic clutch 38 connected to.

The printing means 6 has a platen roller 37 and a thermal head 39 which is in pressure contact with the platen roller 37. The idler gear 33 meshes with the gear 34 and also meshes with the gear 40. A gear 41 that rotates in synchronization with the gear 40 is provided, and the gear 41 meshes with the gear 42. A gear 43 that rotates in synchronization with the gear 42 is provided, and the gear 43 meshes with a gear (not shown) that rotates in synchronization with the drive roller 8a of the cooling roller pair 8 and a gear that does not rotate in synchronization with the drive roller 9a of the paper discharge roller pair 9. ing. The cooling roller pair 8 has the driving roller 8a and the driven roller 8b, and the paper discharge roller pair 9 is the driving roller 9
It has a and a driven roller 9b. The cooling roller pair 8 is
The roller is provided downstream of the printing unit 6 for the purpose of absorbing heat of the rewritable paper 3 provided by the printing unit 6 and also for transporting the rewritable paper 3, and is preferably formed of a material having high thermal conductivity. The driven roller 8b of the cooling roller pair 8 and the driven roller 9b of the paper discharge roller pair 9 are integrally provided on the front cover 11 (described later).

The rewritable paper 3 whose print contents have been erased by the print erasing means 5 or which has not been printed is printed by the thermal head 39 while being conveyed by the platen roller 37. The heating temperature of the thermal head 39 driven based on the image information is set to an appropriate coloring temperature. The ROM of the control means stores a relational data table between the kind of the material of the rewritable paper 3 and an appropriate color development temperature which is obtained in advance by experiments (including computer simulation), and the control means is input. The color development temperature corresponding to the type of the rewritable paper 3 which is automatically detected is selected, and the power supply to the thermal head 39 is controlled.

As shown in FIG. 4, a paper feed outlet sensor 44 as a paper detection means for detecting passage of the rewritable paper 3 is provided in the vicinity of the downstream side of the paper feeding means 4 in the paper feeding direction. A thermal head inlet sensor 45 as a sheet detection unit that detects passage of the rewritable paper 3 is provided in the vicinity of the upstream side of 6 in the sheet feeding direction.
Paper feed outlet sensor 44 and thermal head inlet sensor 45
Has a mechanical sensing arrangement with a sensing filler protruding into the transport path. A photo sensor may be used instead of the mechanical system. In this embodiment, the platen roller 37
In order to prevent the heating element surface of the thermal head 39 from deteriorating due to the rotation of the platen roller 3 during non-sheet passing,
I am trying to rotate 7. That is, the control means controls ON / OFF of the electromagnetic clutch 38 based on the detection information of the rewritable paper 3 by the thermal head inlet sensor 45. As a result, it is possible to solve the problem caused by having one drive source without providing an independent drive source for driving the platen roller 37, and to make the configuration compact and reduce the cost by unifying the drive sources. realizable.

The transport guide member 7 connecting the print erasing means 5 and the print means 6 is formed in a substantially U-shape, and the heat applied by the print erasing means 5 is air-cooled in the rewritable paper 3 while passing therethrough. It As shown in FIG. 5, the transport guide member 7 has an upper guide 7a and a lower guide 7b, and the upper guide 7a and the lower guide 7b are each formed of a material that suppresses the generation of static electricity. Materials that suppress the generation of static electricity include metals and conductive plastics.

As shown in FIG. 6, the apparatus main body 10 has a right side plate 10A and a left side plate 10B. The right side plate 10A serves as an air flow forming means whose main purpose is to cool the conveyance guide member 7. Fan 72 is provided. A motor 13, which is a single drive source, is installed on the left side plate 10B. Ventilation holes 10A-1 and 10B-1 are formed in the right side plate 10A and the left side plate 10B at positions corresponding to the fans 72, and the air flow S generated by the fan 72 is mainly generated by the upper guide 7.
Flows to the left side plate 10B side through the upper surface of a, and exits from the device from 10B-1. Ventilation holes 10A-1, 10B-1
The side surfaces (the left and right side surfaces) of the conveyance guide member 7 facing each other are open, and the air flow S generated by the fan 72 also flows through the inside of the conveyance guide member 7 to the left side plate 10B side.
Exit from -1 to the outside of the device. Of course, the direction of the air flow S may be the opposite direction. A plurality of ventilation holes 7a-1 are formed in the upper guide 7a in a slit shape in order to promote heat dissipation of the transport guide member 7. Although not shown, a ventilation hole similar to the ventilation hole 7a-1 is also formed in the lower guide 7b.

In the present embodiment, the fan 72 has its position determined from the viewpoint of cooling the transport guide member 7 and the thermal head 9 at the same time. As a result, the heat generated by the thermal head 39 is also cooled at the same time. The rewritable paper 3 heated by the print erasing means 5 is efficiently air-cooled in the process of passing through the conveyance guide member 7 and reaches the printing means 6 in a cooled down state. In the present embodiment, particularly the ventilation holes 10A-1 and 10
The air cooling efficiency is high because it is an external communication system in which cold air outside the apparatus passes through B-1.

The heater roller 24 in the print erasing means 5
In order to prevent the decrease of the thermal efficiency, that is, the decrease of the erasing function, at least the print erasing means 5 side of the transport guide member 7 may be formed of a material having a low thermal conductivity. By doing so, the heat generated by the print erasing means 5 is applied to the conveyance guide member 7
Since it is less likely to spread to the printing means 6 side or the like through the heat transmission, it is possible to prevent a decrease in thermal efficiency in the print erasing means 5. From the same viewpoint, the transport guide member 7 may be integrally formed of a material having heat resistance, for example, by molding.

In this embodiment, the exterior frame of the apparatus main body 10 is also formed with ventilation holes for promoting the exhaust of air inside the apparatus, and the printing means 6 and the paper discharge area (printing means 6).
(Downstream of), the jam can be easily treated. This will be described with reference to FIGS. 7 to 9. Figure 7
As shown in FIG. 6, the pressing means 12 holds the thermal head 39 provided on the front cover 11 side and rotates to the shaft 46 (see FIG. 8) on the apparatus main body 10 side through the shaft hole 47a at the lower end. It has a head supporting member 47 supported freely and a biasing mechanism 48 for pressing the head supporting member 47 toward the platen roller 37 side. The head support member 47 is formed so as to tilt in a direction away from the platen roller 37 by its own weight with the shaft 46 as a fulcrum when no external force acts. The urging mechanism 48 is provided between the head support member 47 and the front cover 11, and includes a fixed frame 49 (not shown in FIG. 7) fixed to the apparatus main body 10 and the fixed frame 4.
9 and a pressure release bracket 50 as a pressure release member that is provided so as to be movable at a predetermined distance in the contact and separation direction of the thermal head 39 with respect to the platen roller 37, and a head support member 47 provided on the pressure release bracket 50. It has the 1st elastic member 51 which presses. The front cover 11 is provided with a plate spring 52 as a second elastic member that presses the pressure release bracket 50 toward the platen roller 37.
The leaf spring 52 is used for the front cover 1 of the pressure release bracket 50.
It may be provided at one facing portion.

As shown in FIG. 8, the first elastic member 51.
Has an adjusting screw 53 screwed into the pressure release bracket 50 and having a screwdriver operation surface exposed to the front cover 11 side, and a coil spring 54 having a proximal end fixed to the thermal head 39 side of the adjusting screw 53. ing. When the front cover 11 is closed, the leaf spring 52 presses the pressure release bracket 50, and the coil spring 54 presses the head support member 47 accordingly. As a result, the pressure contact state of the thermal head 39 with respect to the platen roller 37 is obtained. Therefore, adjusting screw 5
By rotating 3, the pressure contact force of the thermal head 39 with respect to the platen roller 37 can be adjusted.

A stepped screw 55 is screwed into the fixed frame 49, and the pressure release bracket 50 is engaged with a non-threaded portion 55a of the stepped screw 55 through a hole 50a and prevented from coming off by a collar 55b. There is. The allowance t in the non-screw part 55a when the front cover 11 is closed is a movable interval of the pressure release bracket 50. The head support member 47 has a shape that enhances heat dissipation efficiency in order to reduce an increase in ambient temperature due to heating of the thermal head 39. The head support member 47 itself also has a heat dissipation function,
In order to obtain a further heat dissipation function, a heat dissipation bracket 56 as a heat dissipation fin having a U-shaped cross section and extending in the axial direction of the platen roller 37 is provided on the surface of the head support member 47 on the front cover 11 side. There is. Heat dissipation bracket 56
May be formed integrally with the head support member 47. From the viewpoint of enhancing the heat dissipation function, it is desirable that the head support member 47 and the heat dissipation bracket 56 are made of a material having high thermal conductivity.

As shown in FIG. 7, on the apparatus main body 10 side,
The discharge guide plate 57 is provided at a position corresponding to the upper portion of the front cover 11.
A drive roller 8a of the cooling roller pair 8 and a drive roller 9a of the paper discharge roller pair 9 are supported by the paper discharge guide plate 57. The roller shape of the cooling roller pair 8 is formed as a single body to enhance the cooling function, and the roller shape of the paper discharge roller pair 9 is composed of a plurality of narrow rollers to enhance the paper discharge function. The discharge guide plate 57 is provided with a plurality of ventilation slits 57a for enhancing the cooling function. From the same viewpoint, the pressure release bracket 50 also has a plurality of ventilation slits 50a. A driven roller 8b of the cooling roller pair 8 and a driven roller 9b of the paper discharge roller pair 9 are rotatably supported on the front cover 11. The front cover 11 is also formed with a plurality of ventilation slits 11a to enhance the cooling function (exhaust function). On both sides of the lower end of the front cover 11,
A shaft 11b serving as a fulcrum at the time of opening and closing is formed, and this shaft 11b is engaged with a shaft hole (not shown) of the device body 10 when mounted on the device body 10.

When a jam occurs, the front cover 11 is opened as shown in FIG. When the front cover 11 is opened, the pressing force applied to the pressure release bracket 50 by the leaf spring 52 is released, and the head support member 47 tilts by its own weight while pushing the pressure release bracket 50 toward the front cover 11 side.
This causes the thermal head 39 to move to the platen roller 37.
From the separation corresponding to the above-mentioned allowance t. Since the cooling roller pair 8 and the paper discharge roller pair 9 are also separated, the rewritable paper 3 jammed in the printing means 6 and the paper discharge area can be easily removed. The thermal head 39 and the platen roller 37 are only slightly separated on the apparatus main body 10 side, and the heating element surface of the thermal head 39 is not exposed in the jam processing work area. There is no worry about getting dirty. In this embodiment, the thermal head 39 and the platen roller 37 are completely separated, but the pressure may be released so that the jammed paper can be easily taken out. Further, the same function can be obtained even if the platen roller 38 and the thermal head 39 are reversed in position and the platen roller 38 is supported by the head supporting member 47.

[0030]

According to the first aspect of the present invention, recording medium feeding means for feeding the reversible thermosensitive recording medium, and print erasing means for erasing the print content recorded on the reversible thermosensitive recording medium, In a recording device having a printing means for printing on a reversible thermosensitive recording medium, a conveyance guide member for guiding the conveyance of the reversible thermosensitive recording medium is provided between the print erasing means and the printing means, and the conveyance guide member is provided. Since the air flow forming means for cooling is provided, the reversible thermosensitive recording medium heated by the print erasing means can be cooled, and the temperature rise around the printing means can be suppressed.

According to the second aspect of the invention, in the recording apparatus according to the first aspect, since the ventilation hole is formed in the conveyance guide member, the cooling efficiency of the conveyance guide member is improved. You can

According to the third aspect of the present invention, in the recording apparatus according to the first or second aspect, since the ventilation holes are formed in the side plate of the main body of the apparatus, cool air outside the apparatus can be taken in. The cooling efficiency can be further improved.

According to the invention described in claim 4, in the recording apparatus according to claim 3, the side surface of the transport guide member corresponding to the ventilation hole is opened.
The air permeability of the transport guide member is enhanced, and the cooling efficiency can be further enhanced.

According to the invention described in claim 5, in the recording apparatus according to any one of claims 1 to 4, the ventilation frame is formed in the exterior frame of the apparatus main body. It is possible to promote the exhaust of the air, and it is possible to further enhance the cooling efficiency.

According to a sixth aspect of the present invention, in the recording apparatus according to any one of the first to fifth aspects, the printing means includes a platen roller that conveys a reversible thermosensitive recording medium,
Since the thermal head that is in pressure contact with the platen roller is provided and the air flow forming means is arranged so as to also cool the thermal head, the transport guide member area and the printing means area are efficiently cooled. be able to.

According to the seventh aspect of the invention, in the recording apparatus according to any one of the first to sixth aspects, the transport guide member is made of a material that suppresses the generation of static electricity. It is possible to prevent the transportability of the reversible thermosensitive recording medium from being deteriorated by static electricity.

According to the invention described in claim 8, a recording medium feeding means for feeding the reversible thermosensitive recording medium, a print erasing means for erasing the print content recorded on the reversible thermosensitive recording medium, and a reversible feeling. In a recording apparatus having a printing unit for printing on a thermal recording medium, a transport guide member for guiding the transport of the reversible thermosensitive recording medium is provided between the print erasing unit and the printing unit, and the transport guide member is at least the above-mentioned. Since the print erasing unit side is made of a material having a low thermal conductivity, it is possible to suppress heat transfer through the transport guide member and prevent a decrease in thermal efficiency in the print erasing unit.

According to the invention described in claim 9, recording medium feeding means for feeding the reversible thermosensitive recording medium, print erasing means for erasing the print content recorded on the reversible thermosensitive recording medium, and reversible feeling In a recording apparatus having a printing means for printing on a thermal recording medium, a transport guide member for guiding the transport of the reversible thermosensitive recording medium is provided between the print erasing means and the printing means, and the transport guide member is heat resistant. Since it is integrally formed of the material having the above, it is possible to suppress the heat transfer through the transport guide member and prevent the reduction of the thermal efficiency in the print erasing means.

[Brief description of drawings]

FIG. 1 is a schematic front view of a recording apparatus according to an embodiment of the present invention.

FIG. 2 is an enlarged detailed view of a sheet feeding unit and a print erasing unit.

FIG. 3 is a diagram showing a driving force transmission configuration by one motor.

FIG. 4 is a diagram showing a sheet detection configuration in a conveyance path.

FIG. 5 is a view showing a conveyance guide member.

FIG. 6 is a perspective view showing a main part of a cooling structure.

FIG. 7 is an exploded perspective view of a printing unit and a paper discharge area.

FIG. 8 is a schematic cross-sectional view of a state in which a cover is closed in a printing unit and a paper discharge area.

FIG. 9 is a schematic cross-sectional view of a state in which a cover in the printing unit and a paper discharge area is opened.

FIG. 10 is a diagram showing a decoloring / coloring mechanism of a reversible thermosensitive recording medium.

[Explanation of symbols]

3 Rewritable paper as a reversible thermosensitive recording medium 4 Paper feeding means as recording medium feeding means 5 Erasing means 6 printing means 7 Transport guide member 7a-1 Ventilation hole 10 Device body 10A right side plate as a side plate 10B Left side plate as side plate 10A-1, 10B-1 Ventilation hole 11 Front cover as exterior frame 11a Ventilation hole 37 Platen roller 39 thermal head 72 Air flow forming means

Claims (9)

[Claims] 1. A recording medium feeding means for feeding a reversible thermosensitive recording medium, a print erasing means for erasing print contents recorded on the reversible thermosensitive recording medium, and a printing for printing on the reversible thermosensitive recording medium. In the recording apparatus having the means, a conveyance guide member for guiding the conveyance of the reversible thermosensitive recording medium is provided between the print erasing means and the printing means, and has an air flow forming means for cooling the conveyance guide member. A recording device characterized by the above. 2. The recording apparatus according to claim 1, wherein a ventilation hole is formed in the conveyance guide member. 3. The recording apparatus according to claim 1 or 2, wherein a vent hole is formed in a side plate of the apparatus body. 4. The recording apparatus according to claim 3, wherein a side surface of the transport guide member corresponding to the ventilation hole is opened. 5. The recording apparatus according to claim 1, wherein a ventilation hole is formed in an outer frame of the apparatus main body. 6. The recording apparatus according to claim 1, wherein the printing unit has a platen roller that conveys a reversible thermosensitive recording medium, and a thermal head that presses against the platen roller. A recording apparatus, wherein the air flow forming means is arranged so as to also cool the thermal head. 7. The recording apparatus according to claim 1, wherein the conveyance guide member is formed of a material that suppresses generation of static electricity. 8. A recording medium feeding means for feeding a reversible thermosensitive recording medium, a print erasing means for erasing print contents recorded on the reversible thermosensitive recording medium, and a printing for printing on the reversible thermosensitive recording medium. In the recording apparatus having means, a conveyance guide member for guiding the conveyance of the reversible thermosensitive recording medium is provided between the print erasing means and the printing means, and the conveyance guide member has thermal conductivity at least on the side of the print erasing means. A recording device characterized by being formed of a low material. 9. A recording medium feeding means for feeding a reversible thermosensitive recording medium, a print erasing means for erasing print contents recorded on the reversible thermosensitive recording medium, and a printing for printing on the reversible thermosensitive recording medium. In a recording device having means, a conveyance guide member for guiding the conveyance of the reversible thermosensitive recording medium is provided between the print erasing means and the printing means, and the conveyance guide member is integrally formed of a heat resistant material. A recording device characterized by being present.