JPH0286476A - Recorder - Google Patents

Abstract

PURPOSE:To prevent a continuous recording medium from being curled or contaminated, even when a recorder is kept unused for a long time, by driving a driving motor so as to provide a wrapped condition in which the recording medium is wrapped round a platen and a clamped condition in which an end part of the medium is clamped between a driving roller and a pinch roller. CONSTITUTION:A driving motor is so driven as to provide a wrapped condition in which a continuous recording medium 3 is wrapped round a platen 15 and a clamped condition wherein an end part of the medium 3 is clamped between a driving roller 11 and a pinch roller 14 when a recorder is kept unused for a long time. A pressing force for clamping the end part of the medium 3 between the driving roller 11 and the pinch roller 14 is set to be small. As a result, it is possible to prevent the medium from being curled or contaminated and to secure excellent printing quality, even when the recorder is kept unused for a long time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a recording device, and particularly to a recording device using a continuous recording medium.

[Prior Art] Conventionally, in a recording device that uses a roll-shaped recording medium that is continuous recording paper, the roll-shaped recording medium is pivoted to a guide part provided on a cover that is rotatable with respect to the main body. Supporting configurations are well known.

FIG. 11 is a sectional view of a main part of a conventional recording apparatus, and shows how roll paper 3 is first loaded into the recording apparatus. In FIG. 11, a recording head 103 is arranged to face a part of the outer circumferential surface of a platen 111 and is slidable in a direction perpendicular to the plane of the paper by a drive device (not shown), thereby controlling the vertical and lateral directions of conveyance of the recording medium. I am trying to perform a recording operation.

Further, a paper feed motor 110 is connected to this platen 111, and a first roller 11 is provided below the outer peripheral surface.
2 are kept in constant contact with a pressing force of about 500 grams, while a second roller 114 is rotatably provided at the upper left on the edge of the paper guide 104 that also serves as a paper guide. The paper guide is adjusted so that the second roller 114 comes into contact with the outer peripheral surface of the platen Ill with a pressing force of about 200 grams and separates from the platen 111, as shown by the solid line and broken line in the figure. 104 is configured to be manually moved.

FIG. 12 is a side view of a main part showing the configuration of the paper feed lever 105 for manually moving the paper guide 104. In FIG. 12, the paper feed lever 105 has an abbreviated shape as shown, and the tip of the long piece protrudes outside the main body so that it can be operated from the outside, while the tip of the short piece has a guide bin 105a. It is installed vertically. And paper feed lever 10
5 is rotatably provided by a stud 105a vertically provided on the right side plate 12°. Further, the guide bin 105a is connected to a groove 1 formed at the upper left of the right side plate 12'.
The paper guide 104 is provided so as to come into contact with the leading edge of the paper guide 104, which is movable as shown by the solid line and broken line in the figure, by 2°a, and as shown by the solid line and broken line in the figure. The paper guide 104 is moved.

Further, the return spring 104a is stretched so as to keep the paper guide 104 and the guide bin 105a in contact with each other.

Next, again in FIG. 11, a paper edge sensor 115 is embedded in the paper guide 104 to enable detection of the paper edge of the roll paper 3. Further, the end of the roll paper 3 stored in the cover 101 is placed on the platen 11.
1 and the first roller 112 to the contact area,
A first paper guide member consisting of a paper guide upper plate 106, a paper guide lower plate 107, and an opening 108 formed as shown is interposed between the platen 111 and the cover 101. Then, an actuator 109a detects whether or not the roll paper 3 has sneaked into the first paper guide member in the vicinity of the opening 108 provided at a relatively lower portion with respect to the roll paper 3. A presence/absence detector 109 is provided.

On the other hand, the roll paper 3 is pivoted on guide portions provided inside both sides of a cover 101 that is rotatable relative to the main body, and is mounted in the open state shown by the broken line in the figure. However, the roll paper 3 is fed in the closed state shown by the solid line in the figure. The open/closed state of the cover 101 is detected by a cover detector 102 provided on the main body.

Next, the operation of initially loading the roll paper 3 into the conventional recording apparatus described above will be explained based on a flowchart.

FIG. 13 is a flowchart showing the operation of loading roll paper 3 into a conventional recording device. In FIG. To load the paper 3 into the cover 101, the cover 101 is opened in step S1 and the core etc. of the used roll paper 3 are removed, and then the roll paper 3 is loaded. As a result of the contact between the actuator and the cover 101 being released, the cover detector 102 is turned off.

Next, in step S2, even when the recording head 103 is moved to the retracted position by a drive device (not shown) in the direction perpendicular to the plane of the paper and the paper feed lever 105 is moved to the position indicated by the broken line in the figure, the recording head Avoid interfering with 103. Then, in step S3, the paper feed lever 105 is rotated to the position shown by the broken line in FIG.

After this state is established, the roll paper 3 is gradually manually fed through the opening 108 at the end thereof until the end reaches the abutment area between the platen 111 and the tenth rule 112. In this state, the roll paper 3 is infiltrated into the first paper guide member, so step S4
At this time, the presence/absence detector 109 is turned on to detect whether the roll paper 3 is set in the first paper guide member. When the ON state of the presence/absence detector 109 is detected, the process proceeds to step S5, where the paper feed remoter 110 is driven, the platen 111 is rotated, and the paper edge sensor 115 is embedded in the edge of the roll paper 3. transport it to the position where it is.

Next, the process advances to step S7, and the driving of the paper feed motor 110 is stopped. Next, the process proceeds to step S8, and the paper feed lever 105 is manually rotated to return it to the original position shown by the solid line in FIG.
so that it touches the Finally, proceeding to step S9, the cover 101 is closed, the cover detector 102 is always turned on, and the loading of the roll paper 3 is completed.

On the other hand, at the time of paper ejection, when a cutter switch (not shown) is pressed, the platen 111 is rotated to convey the roll paper 3 for the distance from the print recording position to the ejection port position, and then the cutter device 119 is activated. Operate to cut the roll paper 3. After that, the platen 111 is rotated in the reverse direction, and the roll paper 3
The end of the paper is returned to the position of the paper end sensor 115, and the paper ejection operation is completed.

That is, in the printing standby state, the roll paper 3 is
A pressing force is constantly applied between the outer circumferential surface of the platen 111, the first roller 112, and the second roller 114, so that the platen 111 is clamped.

[Problems to be Solved by the Invention] However, as a result of the conventional method as described above, when the recording device is not in use and when it is in standby for printing, the roll paper 3, which is a continuous recording medium, is separated from the platen 111 and the tenth -Le 1
12 and the second roller 114. However, if the recording device is left unused for a long period of time and the above-mentioned nipping state continues for a long period of time, the roll paper 3 will be held between the outer periphery of the platen 3. There was a problem in that the paper had a tendency to roll over the surface.

Further, the platen 111, the tenth rule 112 and the second
The roller 114 is usually composed of a rubber-like body, and this rubber-like body contains various additives, plasticizers, etc.
If the above-mentioned clamping state continues for a long period of time, additives and plasticizers will leak out due to the compressive force exerted on the platen 111 by the tenth roller 112 and the second roller 114, resulting in contamination of the roll paper 3. However, there was a problem in that it had a serious negative effect on print quality.

Therefore, the recording device of the present invention has been made in view of the above-mentioned problems, and its purpose is to prevent the continuous recording medium from being unwinded or contaminated even if the recording device is left unused for a long period of time. An object of the present invention is to provide a recording device that can ensure stable print recording quality by preventing this.

[Means for Solving the Problems] In order to solve the above-mentioned problems and achieve the objectives, the recording device of the present invention includes the following configurations: a storage section that stores and supplies continuous recording media; a platen that winds and transports the recording medium and serves as a stand member during recording operation; a guide member that guides the recording medium from the storage section to the platen; and a driving force that is transmitted to and from the platen through a transmission means. a drive motor that transmits transmission to a drive roller disposed on the storage section side of the guide member; a pinch roller that rotatably abuts against the drive roller; A first roller on the upstream side of the recording medium and a second roller on the downstream side of the recording medium are rotatably abutted to hold the recording medium in a sandwiched state, and are set between the first roller and the second roller. a recording device that performs recording on a recording position where the recording medium is wound around the platen, and the driving roller and the pinch roller at the end of the recording medium. The drive motor is driven so as to create a sandwiched state in which the paper and the paper are sandwiched.

Preferably, the force of contact of the pinch roller with respect to the drive roller is smaller than both the force of contact of the first roller with the platen and the force of contact of the second roller with the platen.

[Function] In the recording apparatus configured as described above, when the recording medium is wound around the platen and when the recording apparatus is left unused for a long period of time, the edge of the recording medium is rotated between the ends of the recording medium and the drive roller. and the pinch roller to drive the drive motor to create a pinched state.

Further, it works to reduce the contact force that causes the end of the recording medium to be held between the drive roller and the pinch roller.

[Examples] Examples according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a cross-sectional side view of a main part of a recording apparatus according to an embodiment, and FIG. 5 is a view taken along the line FF' in FIG.

(Description of Recording Mechanism Section) In FIGS. 1 and 5, a recording head 52 configured of a heat-sensitive recording type, a wire tod impact type, etc. is arranged to face a part of the outer peripheral surface of the platen 15, and The gear ledge 53 is fixed on a gear ledge 53 that is slidably guided by a pair of guide rods 54 provided vertically.

The pair of guide rods 54 are fixed to the bent portion 56 of the base plate 55 by a bracket 57, and the carriage 53 is connected to a carriage motor 58 and a motor pulley 59a.
It is made slidable by a carriage drive device composed of an idler 59b and a cable 60, and performs recording operations in the vertical and lateral directions of conveyance of the recording medium of the roll paper 3.

Further, when the recording head 52 is moved to the retracted position indicated by the broken line in FIG. 5, the carriage sensor 61 is turned on.

(Description of Paper Conveyance Section) On the other hand, in FIG.
A paper feed motor 13 provided on the paper feed motor 2 is connected and driven via a gear device (not shown). Further, a first roller 1 is provided below the outer peripheral surface of the platen 15.
6 is always brought into contact with a pressing force of about 500 grams, while a second roller 20 with a pressing force of about 700 grams is placed in the upper left corner of the paper guide 18, which also serves as a paper guide. It is set up so that you can sneak into it.

Next, FIG. 2 is an enlarged sectional view of the main part of FIG. 1. 1st
In the figure and FIG. 2, this paper guide 18 is
The cam groove 42 is rotatably provided around the center axis 15a of the cam groove 42 so as to be driven to the retracted position shown by the solid line in the figure and the guide position shown by the broken line in FIG. A guide pin 40 provided on the side surface and driven by a planetary gear mechanism 27, which will be described later, transmits rotational force to a cam groove 42 to rotate the paper guide 18.

Here, the second roller 20 is kept in constant contact with the outer peripheral surface of the platen 15, and the Mylar film 17 is also kept in constant contact with the outer peripheral surface of the platen 15, so that the paper guide is set at the above-mentioned guiding position. 18 to guide the paper edge. Further, a paper edge sensor 24 is provided near the paper guide 18, so that the paper edge of the roll paper 3 can be detected.

On the other hand, in order to guide the paper end of the roll paper 3 stored in the cover 1 which is rotatable by the fulcrum 2 of the main body 200 between the drive roller 11 and the pinch roller 14,
A first paper guide member consisting of a paper guide upper plate 8, a paper guide lower plate 9, and an opening 7 formed as shown in the figure is provided with the opening 7 opening diagonally upward. .

The roll paper 3 is located near the opening 7 of the first paper guide member.
presence/absence detector 10 for detecting whether or not the edge of the paper has sneaked into the first paper guide member using an actuator 10a;
is provided.

Further, the roll paper 3 is rotatably supported by a roll paper holder 1a provided inside both sides of the cover 1, which is rotatable by a predetermined amount with respect to the fulcrum 2 of the main body 200. Mounting is performed in the open state shown by the broken line in the figure. Further, the roll paper 3 is fed in the closed state shown by the solid line in the figure. The open/closed state of this cover 1 is the main body 20.
It is detected by the cover detector 4 provided at 0.

The above-mentioned drive roller 11 is rotatably supported by bearings (not shown) provided on the left side plate 12 and the right side plate 12°, and receives driving force from the paper feed motor 13 attached on the left side plate 12. It's like getting. and,
The pinch roller 14 is rotatably supported on the paper guide lower plate 9, and is always in contact with the drive roller 11 with a pressing force of about 200 grams.

Here, the conveyance path of the roll paper 3 of the recording apparatus described above after loading is from the opening 7 in the six directions indicated by the broken line in the figure.
The end of the paper inserted is guided by the first paper guide member and wound around the platen 15, and then passes through the cutter device 23 and exits from the paper discharge port 25 in the direction of arrow B shown by the broken line. be forced to go outside.

(Description of cutter device 23) Next, the cutter device 23 includes a fixed blade 49b and a fixed blade 49b.
The edge portion that comes into contact with the edge portion b is gradually moved in the width direction of the roll paper 3, and the movable blade 49a fixed to the cuff lever 47 is made movable by a planetary gear mechanism described later. It is provided. This cutter device 23 is provided with paper cutter guides 21 and 22 on the upper and lower sides to guide the paper edge into the gap between the fixed blade 49b and the movable blade 49a.

(Description of display device and backfeed switch 6) On the other hand,
At the top of the main body 200, there are provided a display device 5 that displays the paper feeding status and a backfeet switch 6 that backfeeds the roll paper 3 when the recording device is not used for a long period of time, as will be described later. .

(Description of Planetary Gear Mechanism) Next, FIG. 3 is a side view for explaining the planetary gear mechanism that drives the paper guide 18 and cutter device 23 shown in FIG. FIG. 4 is a sectional view taken along line xx' in FIG. 3;

In FIGS. 3 and 4, the paper guide motor 19 is attached to the right side plate 12 degrees, and by selectively rotating forward and backward, it drives the paper guide 18 to the retracted position and the guide position, and also drives the paper guide 18 to the retracted position and the guide position. It is configured to also drive the device 23.

A planetary gear mechanism 27 is connected to the paper guide motor 19 via a deceleration mechanism (not shown). This planetary gear mechanism 2
In order to make the planetary gear 35 rotatable around the shaft 30 vertically installed on the right side plate 12, a plate 33 is provided with the planetary gear 35 rotatable around the vertically installed shaft 34. A metal 31 is caulked, and is inserted into the shaft 30 to be rotatable. A sun gear 33 that meshes with a planetary gear 35 is rotatably inserted into the outer peripheral surface of the metal 31. A compression coil spring 36 is built into the planetary gear 35 in a compressed state.
It is designed to provide the frictional force of rotation. This planetary gear 35 is designed to mesh with either the paper guide gear 28 or the cutter gear 29, and an elongated hole 37 is bored in the right side plate 12', so that the shaft 34 is brought into contact with both ends of the planetary gear. 35 restricts rotation to a position where paper guide gear 28 and cutter gear 29 engage.

On the other hand, a shaft 39 is integrally provided at the center of the paper guide gear 28, and the shaft 39 is pivotally supported by a metal 38 vertically installed on the right side plate 12°. The plate 41 is fixed. A bottle 40 is vertically installed on this plate 41 and is adapted to engage with a cam 42 of the paper guide 18 described above. That is, the rotational force that moves the paper guide 18 to the above-mentioned retracted position and guide position is transmitted by the bin 40.

Further, a cam 43 for controlling the rotation angle is formed on the paper guide gear 28, and the rotation angle of the paper guide gear 28 is detected by contacting the paper guide sensor 44 provided on the right side plate 12. to control the position of the paper guide 18.

On the other hand, in FIG. 3, the cutter gear 29, which is rotatable about an axis 12 degrees above the right side plate, is provided with a bin 45, and a cutter lever 46 is rotatably attached to the bin 45. However, the other end of the cutter lever 46 is rotatably engaged with a bin 48 on a lever 47 rotatably provided on the cutter device 23 . That is, the rotary driving force of the cutter gear 29 is configured to cause the movable blade 49a to reciprocate through the cutter lever 46 and the lever 47.

Here, similar to the paper guide gear 28, this cutter gear 29 is also provided with a cam 50 for controlling the rotation angle.
The rotation angle of the cutter gear 29 is detected by contact with the cutter sensor 51 provided on the right side plate 12', and the position of the movable blade 49a of the cutter device 23 is controlled.

(Description of the control device section) Next, the control section that controls the recording device described above is as follows.
This is performed by a central processing unit using a CPU unit as a control unit.

FIG. 6 is a block diagram showing the configuration of the central processing unit 62. In FIG. 6, a central processing unit 62 includes an internal ROM element (not shown), and is capable of executing a control flow described later. As shown in the figure, various drivers are connected to the central processing unit 62 in addition to a large number of the above-mentioned sensors, detectors, and switches. A paper guide motor driver 64 is connected to the guide motor 19, a carriage motor driver 65 is connected to the carriage motor 58, and a display driver 5a is connected to the display section 5.

(Explanation of the operation of the roll paper loading program) The roll paper loading program for loading the roll paper 3 into the recording device configured as described above is stored in the ROM element inside the central processing unit 62, and is stored in the ROM element inside the central processing unit 62. It is possible to load the roll paper 3 from which the paper has been removed.

FIG. 7 is a flowchart showing an example of a roll paper loading program. Referring to FIG. 7, FIG. 1, and FIG. 3, in order to load the roll paper 3, first open the cover 1 in step S1, and then insert the cover 1 of the cover detector 4 in step S2. As a result of the contact state of being released, the cover detector 4 is turned off.

Next, proceeding to step S3, the display section 5 made of light emitting diode
flashes to notify the operator that the cover 1 is open.Next, the process advances to step S4, where the carriage sensor 61
is turned on and it is determined whether or not the recording head 52 is moved to the retracted position, and the carriage sensor 61 is turned on and the recording head 52 is moved to the retracted position. Then, the process proceeds to step S6, where the display section 5 is lit continuously to notify the operator that loading is possible. On the other hand, if the carriage sensor 61 is turned off in step s4, the process advances to step S5, where the carriage motor 58 is rotated, the recording head 52 is moved to the retracted position, and the carriage sensor 61 is turned off. Turn on.

Next, after the roll paper 3 is mounted on the roll paper holder la, in step S7, both ends of the roll paper 3 are pinched with fingertips and gradually inserted through the opening 7. Here, as described above, since the opening 7 opens diagonally upward and the paper guide lower plate 9 maintains a large curvature, the operability of inserting the paper end of the roll paper 3 is considerably improved. .

In this way, in step S8 in which the end of the roll paper 3 is inserted, the presence/absence detector 10 is turned on.
It becomes possible to detect whether the edge of the paper has been inserted between the drive roller 11 and the pinch roller 14.

In step S8, when the ON state of the presence/absence detector IO is detected, the process proceeds to step S9, and as a result of rotating the paper feed motor 13 made of a pulse motor by a certain amount, the drive roller 1
1 is driven, and the roll paper 3 is conveyed to a position where the platen 15 and the first roller 16 are in contact with each other.

On the other hand, if the ON state of the presence/absence detector 10 is not detected in step S8, the process returns to step S7, and the roll paper 3
Wait until the end of the paper is inserted between the drive roller 11 and the pinch roller 14.

Next, when the rotation of the paper feed motor 13 is stopped, the process proceeds to step S1-0, and the operator closes the cover 1, but at this time, sagging occurs as the cover 1 rotates.

In step Sll, it is determined whether the cover detector 4 that detects the closed state of the cover 1 is brought into contact and turned on, and when the on state is detected, the display unit 5 is turned on. The paper guide motor 19 is rotated in the direction of arrow C in step S12, but as described above, a reduction gear mechanism (not shown) is provided between the paper guide motor 19 and the sun gear 3'2. The planetary gear mechanism 2
The planetary gear 35 forming part 7 is about to be rotated by the sun gear 32, but due to the frictional force of the compression coil spring 36, the plate 33 is rotated in the C direction. At this time, the shaft 34 comes into contact with the end of the elongated hole 37, and the planetary gear 35 and the paper guide gear 28 are brought into engagement with each other.

In this way, the rotation of the paper guide motor 19 in the C direction is transmitted to the paper guide gear 28, but as described above, the paper guide gear 28 is provided with a cam 43 for controlling the rotation angle. The paper guide motor 19 continues to be driven in the direction of arrow C until the paper guide sensor 44, which contacts the peripheral surface of the paper guide sensor 43 and controls the rotation angle, is turned on. At this time, the bin 4o, which is provided integrally with the paper guide gear 28 and is engaged with the groove 42 of the paper guide 18, moves the paper guide 18 to the guiding position on the outer peripheral surface of the platen 15. The paper guide sensor 44 detects when the paper guide 18 is moved to the guide position.
The on state is detected in step S13. When the on state is detected in step S13,
Proceeding to step S14, the paper guide motor 19 is stopped. With the above operations, the preparation of the transport path for transporting the roll paper 3 to the end of the roll paper 3 where the second roller 20 contacts the platen 15 is completed.Therefore, the process proceeds to step S15, where the paper feed motor 13 is driven. As a result, the drive roller 11 and platen 15 are driven, and the end of the roll paper 3 is conveyed to the lower part of the paper sensor 24, and step S1
At 6, the paper sensor 24 detects the paper. Paper edge sensor 2
When the detection number 4 is performed, the process advances to step S17, and the drive of the paper feed motor 13 is stopped.

Next, the process proceeds to step 318, where the paper guide motor 19 is rotated in the C direction, the cam 43 turns off the paper guide sensor 44, and the paper guide 18 is rotated to the retracted position.

In step S19, it is determined whether or not the paper guide sensor 44 is in the off state. If it is determined that the paper guide sensor 44 is in the off state, the process proceeds to step S20, and the rotation of the paper guide motor 19 in the C direction is stopped. .

With the above operations, the walnuts are removed from the roll paper 3 and the second
The paper is conveyed until the end of the paper is located at the position of the paper end sensor 24 immediately after the roller 20.

(Description of the operation program of the cutter device 23) When the well-known recording operation is completed and a certain amount of the roll paper 3 is discharged from the discharge port 25, the operation program of the cutter device 23 is operated, and then the roll paper 3 is discharged from the discharge port 25. 3 is cut to a certain length, and this cutting operation is performed by the rotational movement of the paper guide motor 19 in the D direction.

FIG. 8 is a flowchart for explaining the operation program of the cutter device 23. In FIG. 8 and FIG. When the cutter switch is pressed, the process proceeds to step S2, where the paper feed motor 13 is driven, and the end of the roll paper 3 is guided to the discharge port 25, but the cutting position of the cutter device 23 is moved from the position of the recording head 52 to the cutting position of the cutter device 23. Transport is carried out up to. This amount of conveyance is determined by applying the number of drive pulses corresponding to this distance to the paper feed motor 13. Next, the process proceeds to step S3, where the paper guide motor 19 is driven in the direction of the arrow, so that the planetary gear 35 of the planetary gear mechanism 27 now meshes with the cutter gear 29.

When the paper guide motor 19 continues to be driven in the direction of the arrow in this manner, the cutter lever 4
As a result of the lever 47 being rotated downward via the lever 6, the cutting operation of the movable blade 49a is performed. Here, as described above, the cam 50 is integrally formed on the cutter gear 29, and the rotation angle of the cutter gear 29 is controlled by the cam 50. Cutter sensor 51
is provided so as to come into contact with the outer peripheral surface of this cam 50, and is in the on state at the initial position, and when the cutter gear 29 rotates a predetermined amount, it is turned off by - degrees, and when it rotates once, it is turned on again. be made to become.

Therefore, when the cutter sensor 51 changes from the OFF state to the ON state in step S4, the process proceeds to step S5, and the driving of the paper guide motor 19 is stopped. In other words,
The cutter device 27 performs a cutting operation.

Next, the process advances to step S6, where the paper feed motor 13 is rotated in the reverse direction to transport the end of the roll paper 3 close to the paper end sensor 24, and the operation ends.

(Description of backfeed operation program) This backfeed operation program is to be executed when the recording device is left unused for a long period of time.
This prevents the roll paper 3 from being left wrapped around the platen 15, thereby preventing contamination due to curling and plastic materials such as the platen 15.

FIG. 9 is a flowchart of an example of a backfeed operation program, which assumes that the roll paper 3 is loaded in advance and that the program is executed after the recording operation of the recording device is completed. When the user presses the backfeed switch 6, the paper feed motor 13 is continuously driven in the reverse direction, and the drive roller 11 is driven until the paper end sensor 24 is turned off in step S3. Next, the process advances to step S4, and the paper feed motor 13 is again driven in the opposite direction for a predetermined number of steps to drive the paper end of the roll paper 3 to a position where it is held between the drive roller 11 and the pinch roller 14. In step S5, the driving of the paper feed motor 13 is stopped, and thereafter this state is maintained and left unused for a long period of time.

Here, as mentioned above, the pressing force of the pinch roller 14 is about 200 grams, which is the lowest among the rollers for conveying the roll paper 3, so the influence on the roll paper 3 is minimized. It is.

(Description of power-on operation program) Next, to explain the power-on operation, FIG. 10 is a flowchart showing the power-on operation. When the power is turned on in step S1, first step S, Proceeding to step 2, it is determined whether the presence/absence detector IO is in the on state or not, and when it is determined that the presence/absence detector 1O is in the off state, it is determined that the roll paper 3 is not loaded, and the roll paper 3 as explained based on FIG. A paper loading program is executed. On the other hand, when it is determined that the presence/absence detector 10 is in the on state, the process proceeds to step S3, and it is determined whether the paper end sensor 24 disposed on the upper part of the platen 15 is on or off.
It is determined that the roll paper 3 is in a standby position where recording operation is possible, and the power-on operation program is terminated.

Further, when it is determined that the paper end sensor 24 is off, the paper guide motor 19 is continuously driven in the C direction in step S4, and is driven until the paper guide sensor 44 is turned on in step S5, and then in step S6 Then, the paper guide motor 19 is stopped. That is, the paper guide 18 is rotated to the position shown by the broken line in FIG. 2 so that the end of the paper can be guided along the outer peripheral surface of the platen 15.

Next, the process proceeds to step S7, where the paper feed motor 13 is continuously driven, and in step S8, the paper edge sensor 2
4 is continuously driven until it turns on. Paper edge sensor 2
4 is turned on, the continuous drive of the paper feed motor 13 is stopped, and the process proceeds to step S10, where the paper guide motor 19 is continuously driven in the C direction, and the process proceeds to step Sll.
In step S12, the paper guide sensor 44 is driven until it is turned on, and the paper guide motor 19 is stopped. That is, the paper guide 18 is rotated to the position shown by the solid line in FIG. 2 to enable the printing operation, and the power-on operation program is completed. In other words, the aforementioned backfeed operation program is executed to bring the recording device, which has been left unused for a long period of time, into a state where it can print and record.

In the above description, for example, heat-sensitive recording paper, plain paper, or the like is used as the recording medium, but the recording medium is not particularly limited as long as it is a continuous roll-shaped recording medium such as a plastic film. Furthermore, although the recording portion has been described as a serial printing mechanism, for example, a thermal line head or the like may also be used.

[Effects of the Invention] As described above, the recording device of the present invention can prevent curling and contamination of the continuous recording medium and ensure excellent print quality even if the recording device is left unused for a long period of time. It is possible to provide a recording device that can perform

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a cross-sectional side view of the main part of a recording device showing an embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view of the main part of FIG. 1, and FIG. 3 is the same as FIG. A side view for explaining the planetary gear mechanism that drives the illustrated paper guide 18 and cutter device 23, FIG. 4 is a sectional view taken along the line xx' in FIG. 3, and FIG. FF' arrow view, FIG. 6 is a block diagram showing the configuration of the central processing unit 62, FIG. 7 is a flowchart showing an example of a roll paper loading program, and FIG. 8 is an operation program for the cutter device 23. Flowchart diagram for explanation; Figure 9 is a flowchart diagram of an example of a backfeed operation program; Figure 10 is a flowchart diagram showing the operation of turning on the power again; Figure 11 is a cross-section of main parts of a conventional recording device. 12 is a side view of the main part showing the configuration of a paper feed lever 105 that manually moves the paper guide 104 of a conventional recording device, and FIG. 13 is an operation of loading roll paper 3 into a conventional recording device. It is a flowchart figure which showed. In the figure, 1,101... Cover 1a... Roll paper holder, 2... Fulcrum, 3... Roll paper, 4.102...
...Cover detector, 5...Display section, 6...Pack feed switch, 7.108...Opening part, 8.106
...Paper guide upper plate, 9.107... Paper guide lower plate, 10.109... Presence/absence detector, 11... Drive roller, 12... Left side plate, 12゛... Right side plate , 13.
110... Paper feed motor, 14... Pinch roller, 15.111... Platen, 16.112... First roller, 18.104... Paper guide, 19...
Paper guide motor, 20.114...second roller, 2
1.22...Paper cutter guide, 23...Cutter device, 24.115...Paper end sensor, 27...Planetary gear mechanism, 28...Paper guide gear, 29...Cutter gear, 33 ...Sun gear, 35...Planetary gear, 36...
- Compression coil spring, 37... Long hole, 42... Cam groove, 43.50... Cam, 44... Paper guide sensor, 52.103... Recording head, 200... Main body,
A, B... Conveyance direction, C, D... Rotation direction.

Claims (2)

[Claims] (1) A storage unit that stores and supplies continuous recording media;
a platen that winds and transports the recording medium and serves as a stand member during recording operation; a guide member that guides the recording medium from the storage section to the platen; and a driving force that is transmitted to and from the platen through a transmission means. a drive motor that transmits transmission to a drive roller disposed on the storage section side of the guide member; a pinch roller that rotatably abuts against the drive roller; A first roller on the upstream side of the recording medium and a second roller on the downstream side of the recording medium are rotatably abutted to hold the recording medium in a sandwiched state, and are set between the first roller and the second roller. a recording device that performs recording on a recording position where the recording medium is wound around the platen, and an end portion of the recording medium that is wound around the platen, and an end portion of the recording medium that is wound around the platen; A recording apparatus characterized in that the drive motor is driven so as to create a sandwiched state in which the recording device is sandwiched between the recording device and the recording device. (2) The contact force of the pinch roller against the drive roller is made smaller than either the contact force of the first roller against the platen or the contact force of the second roller against the platen. The recording device according to item 1.