JPH0361259A - Decal mechanism and recording device using the decurl mechanism - Google Patents

Abstract

PURPOSE:To enlarge the contact center angle of sheet material to a decurl member sufficiently by moving a guide member or the decurl member fitted on the device main body side or the cover body side forcibly at the time of opening/closing the cover body. CONSTITUTION:At the time of conveying sheet material 5, a shifting means 26 stops in the balanced state between tension applied to the sheet material 5 and energizing force by an energizing means. Accordingly, when the tension is large, the influence of the energizing force on the shifting means 26 is small, and the acting quantity of the shifting means becomes small and therefore the curvature of the sheet material 5 becomes small. On the other hand, when the tension is small, the moving quantity of the shifting means 26 becomes large, and the curvature of the sheet material 5 thereby becomes large. Curl correction corresponding to curl strength can be therefore performed. In this case, a guide member 23 or a decurl member 22 fitted on the device body side or the cover body 2 side is moved by a supporting member 24 at the time of opening/closing the cover body 2 so as to enlarge the contact center angle of the sheet material 5 to the decurl member 22.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a decurling mechanism for correcting curling of a sheet material wound into a roll, and a recording apparatus having the decurling mechanism.

<Prior art> Today, office equipment such as factor ξ printers are widely used, but the recording systems of these devices generally use roll sheets in which long recording sheets are wound around a core. .

Since this sheet material is wound into a roll, it is likely to be curled (hereinafter referred to as r-curl), and curled sheet materials are likely to jam during transportation. For this reason, many recording apparatuses that use the roll sheet are equipped with a decurling mechanism to remove or reduce the curl.

An example of the horizontal decal a is one constructed as shown in FIG. 14, for example.

This is configured such that a main body 51 and a lid 52 can be opened and closed by a pin 53, a roll holder 54, a platen roller 55, and a cutter 56 are provided in one main body 51, and the other lid 52 is provided with a roll holder 54, a platen roller 55 and a cutter 56.
2 is provided with a decurling shaft 57 and a recording hand 58 which constitute a decurling mechanism.

To explain the operation of the device, a sheet roll 59a having a sheet material 59 wound into a roll is loaded into the roll holder 54, and the sheet material 5 is rolled by rotation of the platen roller 55.
9 via the decal shaft 57,
An image is formed by a recording head 58, cut by a cutter 56, and discharged from the apparatus.

In the above-mentioned apparatus, curling is reduced by conveying the sheet material 59 while being bent in the opposite direction to curling by the decurling shaft 57.

In addition, the apparatus having the decurling mechanism shown in FIG.
is attached to the lid body 52 side.

When setting the sheet material 59 on the main body 51, the above device rotates the decal shaft 57 and the recording head 58 together with the lid 52 upward around the pin 53 as shown by the two-dot chain line to open the upper surface of the main body 51. This makes it easier to set the sheet material 59.

In each of the above devices, as shown in FIG. 16, the sheet material 59 is wound around a decal shaft 57 having a radius R at a winding center angle α, thereby being bent and guided in the opposite direction to curling. is to be corrected.

In this case, it is known that the larger the central angle α of wrapping the sheet material 59 with respect to the decal shaft 57, the greater the curl correction effect.

<Problems to be Solved by the Invention> However, in the decal mechanism shown in FIG. 14, as the sheet material 59 is used, the sheet roll 5
The diameter of 9a becomes smaller, and the center angle α of wrapping the sheet material 59 with respect to the decal shaft 57 gradually becomes smaller from α1 to α2.

Therefore, as described above, the curl removal effect of the sheet material 59 gradually decreases, and even though the curl is tighter as the diameter of the sheet roll 59a is smaller, sufficient curl removal is often not performed.

In addition, in the decal mechanism shown in FIG. 15, the decal shaft 57 also rotates as the cover plate 52 rotates, so the guide shirt 60 provided on the main body 51 side must not be attached above the decal shaft 57. I can't.

Therefore, the center angle α of the winding of the sheet material 59 with respect to the decal shaft 57 can only be set to a maximum of about 90°, and a sufficient curl removal effect cannot be obtained.

In order to enhance the above-mentioned curl removal effect, it is necessary to increase the winding center angle α, and for example, as shown in FIG. 17, a guide shaft 60 must be provided in the rotational direction of the decurl shaft 57.

Therefore, in this case, when the sheet material 59 is set on the main body 51, the decal shaft 57 interferes with the guide shaft 60 when the lid body 52 is rotated, so that it cannot be rotated upward.

Therefore, the decal shaft 57 and the guide shaft 6
0 must be provided on the main body 51 side, therefore, when setting the sheet material 59, it is necessary to pass the tip of the sheet material 59 between the decal shaft 57 and the guide shaft 60 and wrap it around the decal shaft 57. Work tends to become complicated.

Further, in order to attach the decal shaft 57 to the lid body 52 and increase the central winding angle αΦ value of the sheet material 59 with respect to the decal shaft 57, the decal shaft 57 is attached to the platen roller 55 and the guide shaft as shown in FIG. If it is located far away from 60,
The conveyance path of the sheet material 59 becomes long, and there is a possibility that a jam may occur.

The present invention solves the above-mentioned problems of the prior art, and includes a support part that attaches one of the guide member or the decal member to the lid and forcibly moves the guide member or the decal member attached to the main body of the device when the lid is opened or closed. A decurling mechanism having a shrine and a recording device having the decurling mechanism are provided.

Means for Solving the Problems> A typical means of the present invention for solving the problems described above includes a conveyance means for conveying a sheet material, a guide member for guiding the conveyance of the sheet material, a decal member for bending and guiding the conveyed sheet material; a moving means for moving at least one of the guide member and the decal member; and an urging means for applying a moving torque to the moving means; The decurling mechanism is characterized in that the guide member or decal member is attached to the lid or the main body of the device, and a support member that can move the guide member or decal member when the lid is opened or closed is provided to constitute a decurling mechanism.

<Operation> In the above means, when conveying the sheet material, the moving means stops in a state where the tension applied to the sheet material and the urging force of the urging means are balanced. Therefore, when the tension is large, the influence of the biasing force on the moving means is small, and the amount of movement of the moving means is small, so the amount of bending of the sheet material is small. On the other hand, when the tension is small, the amount of movement of the moving means increases, contrary to the above, and the amount of bending of the sheet material increases. As a result, curl correction is performed according to the curl strength.

Further, since the moving means is biased by the urging means, no load is applied to the conveying means to operate the moving means.

Furthermore, by providing the guide member and the decal member separately in the main body of the device and the lid, the guide member and the decal member are separated by a large distance when the lid is opened, making it easier to load the sheet material. Become.

In addition, since the guide member or decal member attached to the device main body side or the lid side can be forcibly moved by the supporting member when the lid body is opened and closed, the central angle of the coloring of the sheet material with respect to the decal member can be made sufficiently large. When a sorting roll with a small diameter is used, the curl removal effect can be further enhanced.

Additionally, since the decal member and the guide member do not interfere with each other when opening and closing the lid, it is possible to simplify the conveyance path of the sheet material and reduce the occurrence of jams.Moreover, it is easier to set the sheet material and the device can be made more compact. I can do it.

Further, the biasing means applies a maximum moving torque to the moving means when the diameter is relatively large (a-small diameter), and decreases the moving torque as the diameter rolls and the transition to the recording standby state occurs, thereby causing a driving load on the moving means. can be reduced.

Further, by increasing the self-holding force of the drive source of the moving means to a certain extent, the relationship between the guide member and the decal member can be maintained appropriately.

Further, the recording device is configured by providing the decurling mechanism, the conveyance means and the moving means are operated by the same drive source, and the drive source is driven so as to transport the sheet material backward from the cutter to the recording means. By occasionally returning the moving means to the initial position, the moving means is always located at the initial position in the recording standby state.

Further, by setting the output of the drive source to be larger when the sheet material is being transported in a direction opposite to the recording direction than when the sheet material is being transported in the recording direction, it is possible to stably transport the sheet material. It is.

<Embodiment> Next, an embodiment in which the above means is applied to a facsimile machine will be described.

[First embodiment]

Figure 1 is a perspective explanatory diagram of the recording system of a facsimile machine;
The figure is an explanatory cross-sectional view of the entire fusing device.

As shown in FIG. 2, this facsimile apparatus is comprised of a recording system B having a decurling mechanism A and an original reading system C.

First, the overall configuration will be briefly described with reference to FIG. 2. Recording system B has a lid 2 on an apparatus main body l that can be opened and closed by a shaft 3, and the lid 2 is connected to the main body 1 by a click mechanism (not shown). It is constructed so that it can be locked to. Further, a roll holder 4 is provided at a predetermined position on the back side of the main body of the recording system, and a roll 5a of a heat-sensitive sheet material 5 wound into a roll is loaded into the holder 4. The sheet material 5 is conveyed by the rotation of a platen roller 6a constituting a conveyance means, and when passing through the decurling mechanism, the sheet material 5 is bent in a direction opposite to the curling direction, thereby correcting the curl.

A predetermined image is formed on the sheet material 5 whose curl has been corrected in a recording means 6, and the sheet material 5 after recording is cut by a cutter 7 and discharged by a discharge roller 8 to a discharge stun force 9. ing.

The original reading system C sets a plurality of originals 11 on the original placing table 10 formed on the upper surface of the lid 2, and when a reading operation is performed, several originals from the bottom among the plurality of set originals 11 are read. 11 is conveyed by a preliminary conveyance roller 12a and a pressure contact member 12b that is in pressure contact with the preliminary conveyance roller 12a, and separated by a separation roller 13a.
and a pressure contact member 13b that presses against the pressure contact member 13b. The separated document 11 is conveyed by transport roller pairs +4a, 14b and 15a, 15b.
While being transported by the camera, it is irradiated with light a16, and the reflected light reaches a photoelectric conversion element 19 such as a CCD via a mirror 17 and a lens 18, where it is converted into an electrical signal.When this signal is in copy mode, it is It is configured to be transmitted to recording system B, and in the case of facsimile mode, to be transmitted to the recording system of another machine.

Next, the configuration of each part of the recording system B having the decurling mechanism A in the facsimile machine will be explained in detail.

The roll holder 4 is formed with an open top, and is arranged at the back side of the recording system main body 1. The roll holder 4 is loaded with a sheet roll 5a, and the outer circumferential surface of the roll 5a and the inner surface of the holder 4 come into contact with each other, creating frictional resistance. That is, when the sheet material 5 is drawn out, when the roll 5a has a large diameter and is heavy, a large frictional resistance is generated, and as the sheet material 5 is drawn out and the weight of the roll 5a decreases, the frictional resistance also decreases. This frictional resistance has the effect of applying tension to the sheet material 5 when it is pulled out, and the sheet material 5 that is drawn out is proportional to the magnitude of the frictional resistance.
The tension applied also changes.

Recording means 6 for recording a predetermined image on the sheet material 5
The configuration consists of a platen roller 6a and a recording rack 6b. The platen roller 6a is a roller-shaped member made of a material with a high friction coefficient such as hard rubber, which is rotatably attached to the main body 1, and is connected to a motor 2 serving as a driving source.
It is configured to be driven at o. That is, as shown in FIG. 1, the rotational force of the motor 20 is transmitted from a gear 21a fixed to the motor shaft via an intermediate gear 21b to a gear 21c fixed to the roll shaft of the platen roller 6a, causing the platen roller 6a to rotate. do. The sheet material 5 is conveyed by the rotation of the platen roller 6a, and the platen roller 6a also serves as a means for conveying the sheet material 5.

The recording head 6b forms an image on the sheet material 5 by heating the sheet material 5 in response to both signals, and is configured to press the platen roller 6a via the sheet material 5. . Specifically, the lid body 2 is
The platen roller 6a is rotatably attached to the platen roller 6a by a compression spring 6d when the lid body 2 is closed. Therefore, when the platen roller 6a rotates with the sheet material 5 inserted between the platen roller 6a and the recording head 6b, the sheet material 5 is conveyed.

The recording head 6b in this embodiment uses a so-called line-type thermal head in which a large number of heating elements 6b+ that generate heat when energized are arranged in the width direction of the sheet material 5 on the surface that contacts the sheet material 5. , the heating element 6b is energized in accordance with an image signal to selectively heat the sheet material 5 and color the heat-sensitive sheet material 5 to perform recording.

Next, the cutter 7 has a fixed blade 7a and a driving blade 7b in this embodiment.
A rotary cutter consisting of is used. Specifically, the fixed blade 7a is fixed to the main body l, and the driving blade 7b is attached so as to be rotatable around a shaft 7c, and when the driving blade 7b is rotated by the driving means, it rubs against the fixed blade 7a. This is for canting the sheet material 5.

The drive blade 7f may be configured to be driven by the motor 20 that drives the platen roller 6a, or may be driven by another independent motor.

The sheet material 5 cut by the canter 7 is discharged to the stacker 9 by a discharge roller 8 driven by a drive means (not shown), but since the sheet material 5 used for recording is wound around the core 5b. , the sheet is curled when it is pulled out from the sheet roll 5a.

The curl varies depending on the diameter of the roll 5a.

For example, the curl that occurs when the roll diameter is large has a small curl height h shown in FIG. 4(a), and as the roll diameter becomes small, the curl height h increases, and
)) It curls up as shown.

In the apparatus of this embodiment, the curl is corrected when the sheet material 5 passes through the decurling mechanism A.

That is, the position of the guide shaft 23 serving as a guide member is configured to be movable with respect to the decal shaft 22 serving as a decurling member, and the sheet material 5 is moved between the two shafts 1-22.
The curl is corrected by being bent in a direction opposite to the curl direction when being guided by the guide 23.

The guide shaft 23 is biased against the sheet material 5 by a biasing means to be described later, and is loaded with a large diameter roll 5a as shown in FIG. 5(a), and with a small diameter roll 5a as shown in FIG. 6(b). The decal effect is now different depending on when it is loaded.

Here, the structure of the decurling mechanism A will be specifically explained.

As shown in FIG. 1, the decal shaft 22 is rotatably attached to a bracket 24, which is a support member fixed to the back surface of the lid body 2. This decal shaft 22 is composed of, for example, a metal shaft with a diameter of about 4 mm. The brackets 24 are formed upright on the left and right sides of the lid 2, and the distance between the brackets 24 is larger than the width of the sheet material 5, and smaller than the distance between arms supporting both ends of a guide shaft 23, which will be described later. . Further, sloped portions 24a and 24b are formed at the top and bottom of the protruding piece that supports the decal shaft 22 of the bracket 24, and when the lid body 2 is opened and closed, the sloped portions 24a and 24b are connected to the guide shaft 23.
It can be forcibly moved by coming into contact with it.

The decal shaft 22 is shown in FIG. 5(a) and FIG. 6(
As shown in a), when the lid body 2 is closed, its position with respect to the main body 1 is always constant, and the position at this time is on the upstream side in the conveying direction of the sheet material 5 with respect to the platen roller 6a, and It is supported by the bracket 24 so that the angle at which the material 5 is introduced into the platen roller 6a does not become too large.

Further, a guide 37 is provided on the main body 1 facing the decal shaft 22 to guide the sheet material 5 pulled out from the roll 5a to the platen roller 6a. One end of this guide 37 extends to the vicinity of the platen roller 6a, and the other end is configured to be integrated with the roll holder 4.

On the other hand, the guide shaft 23 is constituted by, for example, a metal shaft having a diameter of about 4 mm.

Further, the guide shaft 23 is configured to be movable relative to the decal shaft 22 by a moving means. As shown in the perspective explanatory view of FIG.
is fixed, and a guide shaft 23 is attached to the tip of both arms 26.
is rotatably attached, and when the shaft 25 rotates, the arm 26 rotates integrally, thereby allowing the guide shaft 23 to move relative to the decal shaft 22.

The shaft 25 is rotatably attached to the main body 1 via a bearing 27, and one end of the shaft is a biasing means for applying a moving torque to the moving means according to the roll diameter of the sheet material. Clutch gear 2B, spring clutch 29. Crank 30. and a tension spring 32 are attached to the shaft 25 so that rotational force in only one direction is transmitted to the shaft 25.

As shown in FIG. 3, the crank 30 has a cylindrical portion 30a and a crank plate 30b. j as axis 25
It is fitted integrally with the body and rotates in the same direction. Further, a projection 30c is provided at one end of the outer surface of the crank plate 30b.
A tension spring 32 is installed between the protrusion 31 and the protrusion 31 protruding from the main body I.

Due to the elastic force of the tension spring 32, rotational torque is always generated in the crank 30 in the direction of the arrow.

Further, the clutch gear 28 includes a cylindrical portion 28a and a gear portion 28.
b, and the inner diameter of the hole through which the shaft 25 is inserted is the same as that of the shaft 25.
It is formed to be slightly larger than the outer diameter of the shaft 25, and is rotatably attached to the shaft 25.

The spring clutch 29 is made by winding a spring steel wire, a spring steel strip, a plastic wire, etc. into a coil, and is wound around the outer periphery of the clutch gear 28 and the cylindrical portion 30a of the crank 30, and one end thereof is connected to the crank vi30.
It is locked on b.

The spring clutch 29 transmits the rotational force of the clutch gear 28 to the crank 30 in only one direction, and not in the other direction. That is, when the clutch gear 28 rotates in one direction of the arrow in FIG. 1, the spring clutch 29 is loosened and becomes free, and no rotational force is transmitted to the crank 30. On the other hand, the clutch gear 28 is indicated by the arrow -a opposite to the above.
When the spring clutch 29 rotates in the direction (hereinafter the minus sign indicates the opposite direction of the arrow), the spring clutch 29
Then, the cylindrical portion 30a of the crank 30 is tightened to be in a locked state, and the rotational force is transmitted to the crank 30, and the rotational force that moves the guide shaft 22 in the direction indicated by the arrow is transmitted.

The drive source for rotating the clutch gear 28 is the same as the drive source for rotating the platen roller 6a,
It is driven by a motor 2o. That is, as shown in FIG. 1, the driving force of the motor 2o is transmitted through the gears 21a to
21c to the platen roller 6a, and the gear 21c attached to the platen roller shaft meshes with the clutch gear 2 through the intermediate gear 21d.

Therefore, as shown in FIG. 1, when the motor 2o rotates forward in the direction of the arrow C, the platen roller 6a rotates in the direction of the arrow, and the clamp gear 28 rotates in the direction of the arrow. That is, when the platen roller 6a rotates in the direction of drawing out the sheet material 5 in the direction of arrow C, the spring clutch 29 is in a free state.

Further, when the motor 20 rotates in the opposite direction of the arrow -C, the platen roller 6a rotates in the direction of feeding the sheet material 5 in the reverse direction, and at this time, the clutch gear 28 rotates in the direction of the arrow -a, and the spring clutch 29 rotates in the direction of the arrow -a. is in a locked state and transmits the rotational force that rotates the guide shaft 23 in the direction indicated by the arrow in FIG.

Due to the tensile force of the tension spring 32, the shaft 25 is always urged in the direction of arrow a in FIG.

Further, a stopper 36 is provided at a predetermined position on the main body 1 within the rotation range of the arm 26.

This stopper 36 comes into contact with the arm 26 when it rotates in the direction of arrow -b in FIG. This is what you set.

Next, we will explain the operation when recording using the recording system B having the decurling mechanism A configured as described above, when the roll diameter is large as shown in FIG. 5(a) and when the roll diameter is large as shown in FIG. 6(a). b)
The curl straightening effect will be mainly explained when the roll diameter is small as shown in FIG.

First, the operation of the bracket 24 accompanying the opening/closing operation of the lid body 2 will be explained.

In the recording standby state, the motor 20 shown in FIG.
By rotating in the C direction, the shaft 25 rotates in the -a direction, and therefore the guide shaft 23 rotates in the direction indicated by the arrow in FIG. 6 (a).
) is waiting at the position indicated by the two-dot chain line.

Therefore, when the lid body 2 is rotated upward around the pin 3 to open the top surface of the device body 1, the decal shaft 22
is the recording head 6 without interfering with the guide shaft 23.
b, rotates upward together with the bracket 24, and both shafts 2
2.23 is far apart.

Therefore, the sheet roll 5a can be loaded into the roll holder 4, and the leading end of the sheet can be easily set by passing it through the guide shaft 23, platen roller 6a, and between the cutters 7a and 7b.

Next, when the sheet material 5 pulled out from the small diameter roll is in the middle of being conveyed, the guide shaft 23 will be positioned almost directly above the decal shaft 22 when the apparatus stops due to a power outage, etc., as shown by the solid line in FIG. 6(a). There are cases where

At this time, if you try to open the top surface of the device main body 1 by rotating the lid body 2 upward, the bracket 24 and the guide shaft 2
3 interferes. However, an inclined portion 24a is formed above the protruding portion of the bracket 24, and this inclined portion 24a has an inclination angle with respect to the horizontal direction that is sufficient to contact the guide shaft 23 and rotate it in the direction indicated by the arrow.

Therefore, the bracket 24 allows the guide shaft 23 to
The lid body 2 can be rotated upward while being forcibly rotated in the direction indicated by the arrow.

Furthermore, after the lid 2 is rotated upward to open the upper surface of the main body and the sheet material 5 is newly set, the position of the guide shaft 23 may return to the position when the lid 2 was opened for some reason. In this case, when the lid body 2 is closed to the main body 1 of the apparatus, the bracket 24 and the guide shaft 23 interfere with each other. However, on the lower side of the protrusion of the bracket 24, there is a slope 24b.
The inclined portion 24a has an inclination angle with respect to the horizontal direction that is sufficient to contact the guide shaft 23 and rotate it in the direction of the arrow.

Therefore, the bracket 24 allows the guide shaft 23 to
The upper surface of the device main body 1 can be closed by rotating the lid body 2 downward while forcibly rotating it in the direction indicated by the arrow.

As mentioned above, the bracket 24 attached to the lid 2 can forcibly move the guide shaft 23, so even if the lid 2 is opened or closed when conveying the sheet material, especially when using small diameter rolls. The decal shaft 22 does not interfere with the guide shaft 23.

Therefore, even if the decal shaft 22 is attached to the lid body 2, the center angle α of the winding of the sheet material 5 with respect to the decal shaft 22 can be made sufficiently large to enhance the curl removal effect.

Furthermore, in this embodiment, since the position of the decal shaft 22 with respect to the platen roller 6a is constant, the sheet material 5
can be stably conveyed to the platen roller 6a.

Next, when the recording start signal is input with the lid 2 closed,
The motor 20 rotates normally, the platen roller 6a rotates in the direction of arrow d, and the sheet material 5 is conveyed in the direction of arrow e. In synchronization with this conveyance, the heating element 6b+ of the recording head 6b selectively generates heat to perform predetermined recording on the sheet material 5. Then, when the sheet material 5 is conveyed, the decurling mechanism A operates to correct the curl of the sheet material 5.

That is, the forward rotation driving force of the motor 20 is also transmitted to the clutch gear 28, but as described above, the spring clutch 29 is in a free state and the clutch gear 28 is rotating idly with respect to the crank 30.

On the other hand, since a biasing force in the direction of arrow a is applied to the shaft 25 by the elastic force of the tension spring 32 as shown in FIG.
The arm 26 rotates in the direction of the arrow
3 moves and stops at a position balanced with the tensile pattern of the sheet material 5.

As a result, the conveyance path of the sorting material 5 is wound around the guide shaft 23 from the sheet roll 5a in the curling direction.
Next, it is bent by the decal shaft 22 and wrapped around the shaft 22 in the opposite direction to the curl.

This winding around the decal shaft 22 corrects the curl of the sheet material 5.

Here, the tension exerted on the conveyed sheet material 5 is caused by the contact friction between the roll holder 4 and the roll 5a loaded on this holder 4.

That is, as shown in FIG. 5(a), if the weight of the roll 5a is 61 and the tension acting on the sheet material 5 is F, then the frictional force caused by the mold 1 c + causes the sheet material 5 to be The arm 26 stops at a position where the generated tension F and the rotational force of the arm 26 (the rotational torque of the crank 30 due to the tensile force of the tension spring 32) are balanced.

As shown in FIG. 5(a), when the roll diameter is large, for example, when a 100 m roll of a 65 μm thick heat-sensitive sheet is used around a 1-inch core, the tension F against the sheet material 5 and the arm 26 The wrapping angle at which the sheet material 5 wraps around the decal shaft 22 is θ when the rotational force of the sheet material 5 is balanced with the rotational force of the decal shaft 22, and then the sheet material 5 is guided to the platen roller 6a. If the wrapping angle θ1 with respect to the decal shaft 22 is larger than necessary, there is a risk that reverse curling will occur in the opposite direction. Experimentally, in the case of the sort roll 5a in this embodiment, the winding angle θ1 is 120 as shown in FIG. 5(b). ″～90′, central angle α with ? is 60
It is desirable to set the elastic force of the tension spring 32 to be between .degree. and 90'.

On the other hand, as shown in FIG. 6(a), when the diameter of the roll 5a becomes smaller and, for example, there is about 20 m remaining, the roll weight Gz
also becomes smaller (CZ<C+), and tensilan F2 acting on the sheet material 5 also becomes smaller (h<P+). Therefore, the arm 26 is further moved by arrow -b than when the roll diameter is large.
Rotate in the direction. If the rotational force of the arm 26 and the tension F2 are balanced, the arm 26 will stop at that position, but if the rotational force of the arm 26 FJJ (J is larger, it will stop at the position where it abuts the stopper 36) do.

At this time, the wrapping angle at which the sheet material 5 is wound around the decal shaft 22 is θ2, which is smaller than the wrapping angle θ1 when the roll diameter is large. As mentioned above, the wrapping angle θ2 is determined by the elastic force of the tension spring 32, but experimentally, in the case of the sheet roll 5b, the wrapping angle θ8 is 0° to 30°9 as shown in FIG. 6(b). Wrapping center angle α2 is 150''~1
801. In this case, the position of the guide shaft 23 is preferably set to 801.
The position is approximately directly above or closer to the platen roller 6a side.

Therefore, when the diameter of the roll 5a is large, the amount of sheet material wrapped around the decal shaft 22 is small, and as the roll diameter becomes smaller and the curl becomes stronger, the amount of sheet material wrapped becomes larger. As the amount of wrapping increases, the sheet material 5 is bent in the direction opposite to the curl, so that the curl correction effect increases. That is, the curl correction effect increases as the roll diameter, which causes stronger curling, becomes smaller.

The graph in FIG. 7 shows the relationship between the center angle α of the wrapping of the sheet material 5 on the decal shaft 23 and the curl height h.

According to FIG. 7, it can be seen that when the center angle α of the wrapping of the sheet material 5 with respect to the decal shaft 23 becomes approximately 90° or more, the value of the curl height h decreases significantly and the curl removal effect is enhanced.

Here is the decal I! The results of an experiment in which sheet materials 5 of various roll diameters were conveyed by horizontal A and curls were corrected are shown.

The sheet material 5 used in this experiment was a 1 inch (25,
A sheet roll 5a wound around a core 5b (4 mm) was used. In this case, the diameter of the roll 5a was 961111 mm when the sheet was not used. Also, the rotational force of the arm 26 is 1
The tension spring 32 was set so that the decal shaft 22 had a diameter of 4 mm, and the radius of movement of the guide shaft 23 was 13 mm. Furthermore, the range of the wrapping angle θ where the sheet material 5 wraps around the decal shaft 22 is set to 13.
The sheet material 5 was heated to 297 m by heating so that the temperature was between 0 and 30 degrees.
m (length of A4 size) wi I sent it and looked at the result.

The experimental results were as shown in FIG. In Figure 8, the white triangles indicate the curl shape shown in Figure 4 (a) without curl correction, and the black triangles indicate the curl shape shown in Figure 4 (a) without curl correction. ~). In addition, the white circles are those that have been curled by the decurling mechanism A, and the curled state is shown in Figure 4 (a).
).

As is clear from this result, the curl height h of the sheet material 5 decreases as the diameter of the roll 5a increases, and the value of the curl height h increases as the roll diameter decreases. When the roll diameter becomes less than about 40111 m, curling occurs.

On the other hand, the sheet material 5 decurled by the decurling mechanism A of the embodiment described above has almost no curling.
Moreover, the measured curl height h showed a substantially constant value.

In this way, the decurling mechanism A changes the decurling effect depending on the strength of the curl by balancing the tension acting on the sheet material 5 and the rotational force of the arm 26, and corrects the curl appropriately.

Further, the arm 26 is biased by a tension spring 32, and the rotational force of the motor 20 in the C direction is transmitted to the platen roller 6a but not to the arm 26.
Therefore, since no load is applied to the motor 2o during recording to move the arm 26, the conveyance accuracy is increased and high-quality recording can be performed.

Next, the relationship between the rotational angle θ and the rotational torque T of the shaft 25 for maintaining the guide shaft 23 at an appropriate position according to the diameter of the sheet roll 5a will be explained with reference to FIG.

In FIG. 9, first, when the sheet roll 5a is a small-diameter roll (for example, when there is 1 m remaining), the motor 20 rotates in the -C direction, so the shaft 25 rotates in the -a direction, and the guide shaft 23 It rotates in the -b force direction about the axis 25 in the figure and rotates to the position 23a. At this time, the wrapping center angle α2 of the sheet material 5 with respect to the decal shaft 22
is 150''. In order to stabilize the guide shaft 23 in this position, the -b force direction rotational torque T is applied to the shaft 25.
=200 gcII was required.

In addition, in the case of a large diameter roll (for example, when it is unused and 100 m long), the motor 20 similarly rotates in the C direction, so that the shaft 25 is driven to rotate in the a direction, and the guide shaft 23
rotates in the -b force direction about the axis 25 in the figure to the position 23b. At this time, the central angle α1 of wrapping the sheet material 5 with respect to the decal shaft 22 is 90°. At this time, the tension of the sheet material 5 increases compared to when it is rolled with a small diameter, so that it is pulled back by θ-45° in the direction indicated by the arrow.

In order to stabilize the guide shaft 23 in this position,
゛A rotational torque T=400 gcm in the −b force direction was required for the shaft 25.

In addition, in the recording standby state, as the motor 20 rotates in the direction C, the shaft 25 rotates further in the direction of arrow -a than in the case of a large diameter roll, and the guide shaft 23 rotates in the direction of arrow A. From the position of 23a, θ=135'
Rotate to position 23c.

It should be noted that the rotational torque T, the winding center angle α1 with respect to the decal shaft 22, The relationship between αo and curl is sheet material 5
The rotational torque T may be set as appropriate depending on the type (core diameter, paper thickness, etc.), or the rotational torque T may be constant at all times. Moreover, the value of T may be maximum not only for a large diameter roll but also for any roll diameter.

According to the above embodiment, based on the position 123a of the guide shaft 23 when using the small diameter sheet roll 5a,
When the rotation angle θ at which the guide shaft 23 rotates in the direction indicated by the arrow due to the rotation of the shaft 25 is from 0° to 45°, the rotational torque T increases as the rotation angle θ increases.

Then, when θ=45'' or more, the rotational torque T decreases and reaches a minimum in the recording standby state.

Next, FIG. 10(a) shows a configuration for obtaining the characteristics of the rotational angle θ and rotational torque T of the guide shaft 23.
(b) (C) will be explained. In the figure, 2 is the length of the tension spring 32, P is the elastic force of the tension spring 32, and r is the elastic force P.
2 shows the perpendicular distance between the line of action and the axis 25, respectively.

Fig. 10(a) shows the case where a small diameter roll is used.
b) shows a case where a large diameter roll is used, and FIG. 10(C) shows a recording standby state.

The torque T by which the tension spring 32 rotates the shaft 25 in the direction of arrow a via the crank 30 is given by T=Pr.

When a large diameter roll is used instead of the small diameter roll shown in FIG. 10(a), the crank 30 and the shaft 25 are pushed back in the direction of arrow -a by the tensigon of the sheet material 5, and the guide shaft 23 rotates in the direction of the arrow. . At this time, tension spring 3
2 is stretched, the elastic force P increases.

Furthermore, since the vertical path NIr between the line of action of the elastic force P and the shaft 25 also increases, the rotational torque T also increases. And the 10th
As shown in (in the figure), the rotational torque T is maximum when the longitudinal center line of the crank plate 30a and the line of action of the elastic force P are perpendicular to each other.

During recording standby, the crank 30 and shaft 25 rotate further in the direction of arrow -a than when using a large-diameter roll, and the guide shaft 23 rotates in the direction indicated by the arrow. At this time, as shown in FIG. 10 (C1), the tension spring 32 is further stretched, so the elastic force P increases.

However, since the vertical distance r between the line of action of the elastic force P and the shaft 25 is significantly reduced, the rotational torque T is reduced as a whole.

FIG. 11 shows the above relationship in a graph.

In FIG. 11, a straight line indicated by a dotted line indicates a case where rotational torque T is applied to the shaft 25 by a torsion coil spring or the like. In this case, during recording standby, a torque of 800 gcm is required, which is approximately twice the torque T required for large-diameter rolls. Therefore, axis 2
It is also necessary to increase the output of the motor 20 that rotates the platen roller 5, and there is a possibility that problems such as load fluctuations on the platen roller 6a may occur.

In this embodiment, the value of the rotational torque T of the shaft 25 with respect to the rotation angle θ of the guide shaft 230 is maximized at a relatively large arbitrary roll diameter, so that the guide shaft 23 is controlled by the elasticity of the tension spring 32 during recording standby. The load on the motor 20 when rotating in the direction indicated by the arrow against the force P can be reduced, thereby making it possible to downsize the entire device.

Note that the values of the rotational angle θ of the guide shaft 23 and the rotational torque T of the shaft 25 are not limited to those in the above embodiment, and may vary depending on the spring constant of the tension spring 32, the shape of the crank 30, and the protrusion 30.
b, the position of the protrusion 31, etc. are determined as appropriate.

Further, it is also possible to set the value of the rotational torque T to be larger when the diameter of the sheet roll 5a is small than when it is large.

Further, it is also possible to keep the rotational torque T constant using a constant torque mechanism such as a slip clutch or a negator spring, regardless of the roll diameter (that is, regardless of the position of the guide shaft 23).

After an image is recorded on the sheet material 5 whose curls have been corrected as described above, it is cut by a cutter 7 and discharged by a discharge roller 8.

On the other hand, the tip of the sheet material 5 in the device is cut into a cutter 7.
It is fed backward by a distance i from the position to the recording means 6. This is to prevent blank areas from occurring at the leading edge of the sheet during the next recording. Therefore, when the motor 20 is driven in the reverse direction by a predetermined amount, the driving force is transmitted not only to the platen roller 6a but also to the crank 30 as the honey clutch 29 is locked as described above, and the force is transmitted to rotate the arm 26 in the direction indicated by the arrow. acts.

At this time, as shown in FIG. 1, a tensile force is applied to the arm 26 by a tension spring 32 in a direction that prevents the rotation. For this reason, the driving force of the motor 20 in this embodiment is set to be larger than the arm rotation force due to the tension force of the tension spring 32 when driving in reverse as described above.

Therefore, when the motor 20 is driven in reverse to reversely feed the sheet material 5 as described above, the driving force causes the arm 26 to
rotates in the direction indicated by the arrow, moves away from the sheet material 5 by 1, and returns to the initial position shown by the two-dot chain line in FIG. Note that the initial position here refers to a position where the guide shaft 23 does not block the opening of the roll holder 4, and where the guide shaft 23 does not interfere with the decal shaft 22 when opening the lid body 2. . In this state, since the guide shaft 23 is separated from the sheet material 5, the sheet material 5 is not curled in the opposite direction even if the recording standby state continues for a long time.

Incidentally, in order to reversely feed the sheet material 5 by a distance El, the motor 2 is
il (return angle α) at which the arm 26 rotates when the arm 26 is driven in the reverse direction is set to an angle at which the arm 26 rotates from the position where it contacts the stomper 36 to the initial position as shown in FIG. 5(a). are doing.

That is, the motor 2 when rewinding the sheet material 5 by a short length
The distance l between the platen roller 6a and the cutter 7, the distance l between the platen roller 6a and the shaft 25, and the rotation amount of the motor 20 when rotating the arm 26 by the angle α in the direction indicated by the arrow are the same. The rotation ratio, the position of the stopper 36, etc. are set.

Next, the motor driving force required to operate each member will be explained when the motor 20 is driven in forward rotation and when it is driven in reverse.

If the motor output when driving the motor 20 in normal rotation (when conveying the sheet material 5 in the recording direction) is P, then in this case, since the spring clutch 29 is in a free state,
The output P1 may be the driving force necessary to rotate the platen roller 6a.

On the other hand, if the motor output when driving the motor 20 in the reverse direction (when conveying the sheet material 5 in the unwinding direction) is set to pt, in this case, the spring clutch 1-29 is in a locked state, so the output P2 is The driving force necessary to rotate the platen roller 6a and the driving force necessary to rotate the arm 26 against the tension spring 32 are required, and the driving force (P+< h) is required.

Therefore, if the rated output of the motor 20 is set to P2, the surplus output of the motor 20 (Pg
pt) may cause vibration, which may cause uneven feeding, noise, etc.

Therefore, in this embodiment, the output when driving the motor 20 in forward rotation is set to the above-mentioned P, and when driving in reverse wlA, the output is set to P2, which is larger than when driving in normal rotation.

This can be easily accomplished by a known method such as increasing the driving current of the motor 20 during reverse rotation compared to normal rotation, or lowering the rotation speed.

As mentioned above, even if the drive current is increased or the rotational speed is set low during reverse drive, the rewinding amount l (for example, (approximately 20 vw) is sufficiently small, the influence of the temperature rise of the motor 20 during reverse drive or the delay in the reverse feeding time of the sheet material 5 is extremely small.

Further, an arm 26 driven by the motor 20
It is preferable to set the gear ratio and the like so that the rotational speed of the platen roller 6a is the same as or slightly faster than the rotational peripheral speed of the platen roller 6a (the conveyance speed of the sheet material 5). That is, by configuring as described above, the guide shaft 23 quickly retreats to the initial position when the sheet material 5 is fed back.

The motor 20 stops after rewinding the sheet material 5 by a predetermined amount, but at this time the arm 26 is in a tensioned state by the tension spring 32.

As shown in FIG. 1, this tensile force is caused by an attempt to rotate the crank 30 in the direction of arrow a.
is in a locked state and becomes a force that urges the gear 2 in the direction of the arrow a, which acts as a rotational torque that rotates the motor 20 via the gears 21a to 21d.

For example, if the rotational torque for rotating the crank 30 in the direction of arrow a is T, (for example, about 1 kgcm), and the rotational speed ratio of the motor 20 and the clutch gear 28 is 10:l, the rotational force causes the motor 20 to rotate. The rotational torque T2 transmitted to is T+/io (0.1 kgcm).

Therefore, in this embodiment, in order to prevent the arm 26 from rotating when the motor 20 is stopped, the self-holding torque of the motor 20 (when torque is applied from the outside to the rotor made of permanent magnets, the magnetic force (the torque at which the rotor attempts to stop) is greater than the rotational torque Tt transmitted to the motor 20 (for example, 0.2 kgcm).
It is set.

As a result, in the recording apparatus of this embodiment, in the recording standby state, the arm 26 is held at the initial position indicated by the two-dot chain line in FIGS. 5(a) and 6(a).

Therefore, when opening the lid 2, such as when replacing the roll 5a, the guide shaft 23 does not interfere with the decal shaft 22, and the lid 2 can be opened smoothly.

Since the apparatus of this embodiment is configured as described above, it is possible to correct the curl according to the strength of the curl, and the load applied to the motor 20 during recording is only the load for rotating the platen roller 6a. Because of this, sheet conveyance can be performed accurately, and furthermore, the roll 5a can be easily replaced.

[Second example]

In the first embodiment described above, the decal shaft 22 is connected to the lid body 2.
Guide shaft 23 by bracket 24 attached to
12 and 13 show a second embodiment in which the decal shaft 22 is forcibly movable by an arm that attaches the guide shaft 23 to the device main body 1. Shown below.

Incidentally, the same parts and parts having the same functions as those in the first embodiment are given the same reference numerals, and the explanation thereof will be omitted.

In FIG. 12, the decal shaft 22 is rotatably supported by a bracket 24 which is pivotally supported by a pin 35 on a side plate 34 which is fixed upright on the left and right sides of the lid body 2.

The pin 35 has one end attached to the lid 2 and the other end attached to the cover.

A torsion coil spring 36 is attached to each of the brackets 24, and the decal shaft 22 is attached to the bracket 24.
At the same time, it is constantly biased in the direction of arrow f by the elastic force of the torsion coil spring 36.

On the other hand, the guide shaft 23 is rotatably supported by an arm 37 attached and fixed to the main body of the apparatus. The protruding portion formed at the tip of the arm 37 has inclined portions 37a and 37b formed on the upper and lower sides, respectively.

Next, referring to FIG. 13, the operation of the bracket I/24 accompanying the opening/closing operation of the lid body 2 will be described.

In FIG. 13, when conveying the sheet material, the decal shaft 22 is moved to the bracket 2 by the tension acting on the sheet material 5 due to the weight of the sheet roll 5a and the torsion coil spring 36.
It moves to a position where the elastic force acting on 4 is balanced and comes to rest.

Since the small-diameter sorting roll 5a is light in weight, the tension acting on the sheet material 5 is weakened, and the decal shaft 22 rotates in the direction of arrow f, so that the guide shaft 23 is positioned approximately directly above.

At this time, if you try to open the top surface of the device main body 1 by rotating the lid 2 upward, the arm 37 and decal shaft 22
and interfere. However, a sloped portion 37b is formed on the lower side of the protruding portion of the arm 37, and this sloped portion 37b
has an oblique angle of approximately 1 with respect to the horizontal direction such that it contacts the decal shaft 22 and rotates in the direction of the arrow -=f force.

Therefore, the arm 37 allows the decal to be applied to the shaft 22.
The cover body 2 can be rotated upward while being forcibly rotated in the direction of arrow -f against the elastic force of the torsion coil spring 36.

Also, when the lid body 2 is rotated to close the top surface of the apparatus main body 1, the arm 37 and the decal shaft 22 interfere again. However, an inclined portion 37a is formed above the protruding portion of the arm 37, and this inclined portion 37a has an inclination angle with respect to the horizontal direction that is sufficient to abut the decal shaft 22 and rotate it in the direction of arrow -f.

Therefore, the arm 37 twists the decal shaft 22 against the elastic force of the coil spring 36 to forcibly force the decal shaft 22 to
The top surface of the device main body l can be closed by rotating the lid body 2 downward while rotating it in the f direction.

As mentioned above, the arm 37 attached to the device body 1 can forcibly move the decal shaft 22, so that even when the lid 2 is opened or closed, the decal shaft 22 moves as a guide shaft, especially when a small diameter roll is used. There is no interference with 23.

Therefore, even if the decal shaft 22 is attached to the lid body 2, the center angle α of the winding of the sheet material 5 with respect to the decal shaft 22 can be made sufficiently large to enhance the curl removal effect.

Further, as an embodiment combined with the first embodiment, the bracket 24 may be fixed to the lid body 2 and the inclined arm 37 may be configured to move. That is, when the lid body 2 is opened or closed, the decal shaft 22 may be configured to abut the inclined portions 37a, 37b and move the arm 37.

As mentioned above, the decal shaft 22. Guide shaft 2
3 may be configured so that either one moves.

Further, a support member for moving the decal shaft 22 or the guide shaft 23 when the lid 2 is opened or closed can be provided on either the device main body 1 or the lid 2.

[Other Examples]

In the first embodiment described above, the guide shaft 23 is attached to the arm 26 and is configured to be moved by rotating the arm 26, but the moving means need not be limited to this, and for example, other means may be used. As the configuration of guide shaft 2
Alternatively, the decal shaft 22 may be configured to move in parallel along a rank or rail, or may be moved by being pushed up by a cam or the like. Further, both the decal shaft 22 and the guide shaft 23 may be configured to be movable.

Further, instead of the cylindrical decal shaft 22 and guide shaft 23, a plate-like member such as a sheet metal having a curved surface having the same radius of curvature as that of each shaft can be used.

Further, as a device for selectively transmitting the driving force of the motor to the decal shaft 22 or the guide shaft 23,
Although the spring clutch 30 is used in the first embodiment, the present invention is not limited to this, and for example, a roller type needle clutch or the like may be used.

Further, in the first embodiment, the motor 20 that drives the platen roller 6a is used as a drive source for moving the guide shaft 23, but it is natural that these may be driven by separate motors. Further, the driving source is not limited to a motor, and for example, a plunger or the like may be used.

Furthermore, as a biasing means for biasing the decal shaft 22 or guide shaft 23 in a direction that increases the decal effect, the tension spring 32 was used in the first embodiment, and the torsion coil spring 36 was used in the second embodiment, but this The invention does not need to be limited to this, and for example, in addition to the cylinders such as compression springs and mainsprings, cylinders such as air cylinders and oil cylinders, or magnets may be used.

Furthermore, although the above-mentioned recording system has been explained by taking as an example a thermal recording device using a heat-sensitive sheet material, the present invention can be similarly applied to a thermal transfer recording device that transfers ink from an ink sheet to plain paper.

<Effects of the Invention> As described above, in the present invention, the guide member or decal member is configured to be movable by the interaction between the tensilan acting on the sheet material and the moving force applied to the guide member or decal member. Curl correction can be performed depending on the degree of curl of the sheet.

In addition, since the guide member or decal member attached to the device main body side or the lid side can be forcibly moved by the support member when the lid body is opened and closed, the center angle of the sheet material relative to the decal member can be made sufficiently large. In particular, when a small diameter sheet roll is used, the curl removal effect can be further enhanced.

Additionally, since the decal member and the guide member do not interfere with each other when opening and closing the lid, it is possible to simplify the conveyance path of the sheet material and reduce the occurrence of jams.Moreover, it is easier to set the sheet material and the device can be made more compact. I can do it.

Furthermore, since the decal member or the guide member is biased by the biasing means, it is possible to prevent unnecessary load from being applied to the drive source of the sheet conveying means, and it is possible to improve the performance of the sheet conveying means. , the drive source can be made smaller and the cost can be reduced.

[Brief explanation of drawings]

FIG. 1 is a perspective explanatory view of a first embodiment in which the present invention is applied to a recording system of a factor ξ device, FIG. 2 is an overall cross-sectional view of the factor ξ device, and FIG. 3 is a cross-sectional view of a moving means. , 4th
Figures (a) and (b) are illustrations of curling of the sheet material, Figures 5 (a) and (b) are illustrations of the state in which recording is performed with a large diameter sheet roll loaded, and Figures 6 (a) and (b). 7 is a graph showing the relationship between the winding center angle α and the curl height h. FIG. 8 is an explanatory drawing showing the roll diameter and the degree of curl. FIG. 9 is a cross-sectional explanatory diagram showing the relationship between the rotation angle θ of the guide member and the rotation torque T;
10(a), (b), and (C) are explanatory diagrams showing the configuration for applying the rotational torque, and FIG. 11 is the rotation angle θ.
FIGS. 12 and 13 are explanatory diagrams of the second embodiment, and FIGS. 14 to 18 are explanatory diagrams of the prior art. A is the decal mechanism, B is the recording system, C is the document reading system,
1 is the device body, 2 is the lid, 3 is the shaft, 4 is the roll holder, 5 is the sheet material, 5a is the sheet roll, 5b is the winding core, 6
is a recording means, 6a is a platen roller, 6b is a recording head, 6b+ is a heating element, 6c is a shaft, 6d is a compression spring, 7 is a cutter, 7a is a fixed blade, 7b is a driving blade, 7c is a shaft, 8
is a discharge roller, 9 is a stacker, 10 is a document placement table, 11
12a is a preliminary conveyance roller, 12b is a pressure contact member,
13a is a separation roller, 13b is a pressure contact member, 14a, 14
b, 15a. 15b is a conveyance roller, 16 is a light source, 17 is a ξ roller, 18
is a lens, 19 is a photoelectric conversion element, 20 is a motor, 21
a to 21d are gears, 22 is a decal shaft, 23 is a guide shaft, 24 is a bracket, 24 a + 24
b, 37 a +37b is the inclined part, 25 is the axis, 26
．． 37 is an arm, 27 is a bearing, 28 is a clutch gear, 2
8a is a cylindrical part, 28b is a gear part, 29 is a spring clutch,
29a is a cylindrical part, 29b is a gear part, 30 is a crank, 3
0a is the crank plate, 30b. 31 is a protrusion, 32 is a tension spring, 33 is a stopper, 34
35 is a side plate, 35 is a bottle, and 36 is a torsion coil spring.

Claims (7)

[Claims] (1) A conveying means for conveying the sheet material, a guide member for guiding the conveyance of the sheet material, a decal member for bending and guiding the conveyed sheet material, the guide member and the decal member a moving means for moving at least one of the moving means; a biasing means for applying a moving torque to the moving means; and a means for attaching the guide member or decal member to the lid or the main body of the device, and for attaching the guide member or the decal member to the lid or the main body of the device, A decal mechanism comprising: a support member capable of moving a member or a decal member; (2) Claim (1) characterized in that the decal member is provided on the lid body, and a guide member is provided on the device main body.
Decal mechanism as described. (3) The decurling mechanism according to claim 1, wherein the self-holding force of the drive source for operating the moving means is set to be larger than the urging force applied to the moving means by the urging means. (4) The decurling mechanism according to claim 1, wherein the moving force of the moving means is set to be larger than the urging force of the urging means of the moving means. (5) A recording device comprising: the decurling mechanism according to claim (1); and recording means for recording an image on a sheet material conveyed by the conveyance means. (6) A cutter is provided downstream of the recording means in the sheet material conveying direction, and a driving source for the conveying means for conveying the sheet material and a driving source for operating the moving means are configured to be the same. , The amount of rotation of the drive source required to reverse feed the sheet material from the cutter to the recording means is set to be approximately the same as the amount of rotation of the drive source required to return the moving means to the initial position. The recording device according to claim (5). (7) In the case where the drive source for the conveyance means for conveying the sheet material and the drive source for operating the moving means are configured to be the same, and the output of the drive source is used to convey the sheet material in the recording direction. 6. The recording apparatus according to claim 5, wherein the conveyance in the opposite direction to the recording direction is set to be larger than that in the recording direction.