JPH06115200A - Recorder - Google Patents

Abstract

PURPOSE:To prevent jam of a record sheet. CONSTITUTION:A conveying surface of an ink sheet 2 disposed at a delivery side of a record medium 1 from a recording position of recording means 3 is bent at two or more positions and conveyed. Accordingly, the medium 1 adhered to the sheet 2 by static electricity, etc., can be easily separated by two or more bends formed on the conveying surface of the sheet 2, thereby preventing a sheet jam.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording device for selectively recording ink contained in an ink sheet on a recording medium by a recording means.

[0002]

2. Description of the Related Art Today, with the development of information processing systems,
Various information processing devices have been developed. Among these devices, recording devices such as facsimile machines and printers are widely used not only in offices but also in general households.

In order to facilitate miniaturization in these facsimiles and the like, a so-called heat-sensitive recording system using a heat-sensitive sheet that develops color when heated is generally used, but in recent years, an ink sheet is used. Facsimile devices related to the so-called thermal transfer recording system have also been developed. For example,
As shown in FIG. 18, an ink sheet 100 having a base film coated with ink is wound around a supply reel 101 and a take-up reel 102, and is loaded into the apparatus main body. Then, at the time of recording, the ink sheet 100 is driven to rotate by a conveyance roller 103a.
The pinch roller 103b rotates and the recording sheet 105 pressed by the recording head 104 is conveyed by the platen roller 106. Recording on the recording sheet 105 is performed by heating the recording head 104 according to an image signal.

When one page of the recording sheet 105 has been recorded, the platen roller 106 conveys the recording sheet for a preset length, and the cutter 107 cuts the recording sheet.
The cutting positions of 105 are aligned, and the cutter 107 cuts each time one page of recording is completed. In this way, the recording sheet 105 can be cut into a predetermined length by setting the conveyance amount of the recording sheet 105 after the recording for one page is set to an appropriate value. On the other hand, when the recording of one page is completed on the ink sheet 100, the conveyance roller 103a and the take-up reel 10
The rotation of 2 is paused, and the transportation is paused.
This is to reduce waste of the ink sheet 100.

[0005]

However, in the above-mentioned conventional example, the recording sheet 105 is stuck to the ink sheet 100 due to the static electricity due to the friction with the ink sheet 100, and the recording sheet 105 is not conveyed toward the cutter 107 and is supplied. Reel 10
The paper may be conveyed in one direction, causing a jam,
In particular, in the facsimile apparatus having the above-mentioned recording method, when a recording sheet is jammed at the time of unattended reception, once the recording sheet is jammed, it becomes impossible to receive due to a recording sheet error and the original facsimile function cannot be exhibited.

Therefore, an object of the present invention is to solve the above problems and to provide a recording apparatus configured to prevent jamming of a recording sheet.

[0007]

In order to achieve the above-mentioned object, a typical recording apparatus of the present invention has a constitution in which an ink sheet and a recording medium are conveyed in parallel and the ink contained in the ink sheet is selectively selected by the recording means. In the recording apparatus for recording on the recording medium, the conveying surface of the ink sheet on the discharge side of the recording medium with respect to the recording position in the recording unit is configured to be bent and conveyed at two or more places. There is.

[0008]

In the recording apparatus having the above structure, the ink sheet conveying surface on the discharge side of the recording medium with respect to the recording position of the recording means is bent at two or more positions, and the ink sheet conveying surface is bent. By having a certain curvature, it becomes possible to reasonably separate the recording medium attached to the ink sheet due to static electricity or the like from the ink sheet.

[0009]

【Example】

[First Embodiment] A recording apparatus A according to the present embodiment is configured as a recording system of a facsimile apparatus. FIG. 1 is an explanatory view of the entire structure of the facsimile apparatus, FIG. 2 is an external perspective view and FIG. FIG. 6 is a development explanatory view of the sheet cartridge.

(General Description of Facsimile) First, the overall structure of the facsimile apparatus will be described with reference to FIGS. 1 and 2. As shown in FIG. 1, the facsimile apparatus has a recording system A as a recording apparatus and an image described on a document. It is composed of a reading system B for reading, an operation unit C, and an ink sheet cartridge D loaded.

{Recording system} The recording system A records an image on the recording sheet 1 in response to an image signal transmitted from another device or an image signal transmitted from a reading system B described later. That is, the superposed recording sheet 1 and ink sheet 2 are pressed toward the platen roller 3b side by the recording head 3a constituting the recording means 3, and the platen roller 3b is driven and rotated in the arrow direction of FIG. The ink sheet 2 is conveyed in the direction of arrow a, and at the same time, the ink sheet 2 is conveyed in the direction of arrow b by the capstan roller 31 as an ink sheet conveying means. In synchronization with the conveyance of the recording sheet 1 and the ink sheet 2, the recording head 3a is caused to generate heat in accordance with an image signal to melt the ink applied to the ink sheet 2 (including sublimation, the same applies hereinafter), and the molten ink is recorded. The image is formed by transferring the image onto the sheet 1.

The recording sheet 1 on which a predetermined image is formed
Is further conveyed in the direction of arrow a, cut by the cutter 4, and then conveyed by the pair of discharge rollers 5a and 5b to be discharged to the outside of the apparatus.

The recording sheet 1 is stored in a roll holder 7 provided in the main body 6 of the apparatus.
The platen roller 3b, the cutter 4, and the discharge roller pairs 5a and 5b are provided in the apparatus main body 6, respectively.

The ink sheet 2 is housed in an ink sheet cartridge D having a structure described later in this embodiment. Then, the ink sheet cartridge D is detachably mounted on a recording cover 9 as a lid which is configured to be rotatable on the apparatus main body 6 via a rotary shaft 8. The recording head 3a is provided at a predetermined position on the recording cover 9.

[Reading system] On the other hand, the reading system B irradiates the original 10 with light and converts the reflected light into an electric signal, and transmits this signal to another machine according to the operation mode, or its own recording system. A
To be transmitted to. That is, a plurality of originals 10 are placed on the original placing table 9a formed on the upper surface of the recording cover 9, and the originals 10 are preliminarily conveyed by the preliminary conveying roller 11a and the pressing piece 11b, and the separating roller 12a and the pressing roller 11a are pressed against them. Pressure piece
The original 10 is separated and fed one by one by 12b, and the original 10 is conveyed by a pair of conveying rollers 13a, 13b and a pair of discharging rollers 14a, 14b and discharged to a discharge tray 15.
Then, while the document 10 is being conveyed, the document surface is irradiated with light from a light source 16, and the reflected light is led to a photoelectric conversion element 19 such as a CCD through a mirror 17 and a lens 18, and the image signal thereof is in a copy mode. In this case, the data is transmitted to its own recording system, and in the transmission mode, it is transmitted to the recording system of another device.

As shown in FIG. 2, the operation unit C is a panel for performing the mode switching operation, the copy operation, the transmission operation, etc., and is provided with keys corresponding to various operations. There is. The operation section C is provided above the document conveying mechanism in the reading system B, and is configured to be rotatable with respect to the apparatus body 6. A handset 20 of a telephone for transmitting and receiving is provided at one end of the operation unit C. In addition, in FIG. 1, reference numeral 21 is an electric component substrate,
22 is a power supply unit.

Further, in the present embodiment, in order to reduce the running cost, a so-called multi-print system is adopted in which the recording speed of the ink sheet 2 is made lower than that of the recording sheet 1 for recording. This multi-print method
The transport length L _I of the ink sheet 2 is shorter than the transport length L _P of the recording sheet 1 at the time of recording (L _P / L _I = n
> 1) is recorded. By doing so, the use efficiency of the ink sheet 2 can be increased n times as compared with the conventional recording method (L _P / L _I = 1) in which the conveyance lengths of the recording sheet 1 and the ink sheet 2 are the same. .

{Ink Sheet Cartridge} As shown in FIG. 3, the ink sheet cartridge D is configured such that a supply reel 25 serving as a first winding member and a take-up reel 26 serving as a second winding member are provided in a predetermined frame 27. The ink sheet 2 is loaded by mounting the ink sheet 2 at the position and stretching the ink sheet 2 wound around the supply reel 25 to the take-up reel 26 side.
By using this ink sheet cartridge D, the ink sheet 2 for the recording system A can be very easily
In addition, it can be loaded reliably and stably. When the ink sheet 2 is used up, the ink sheet cartridge D is discarded together with the ink sheet 2. That is,
Since the ink sheet cartridge D is disposable,
It is required to be able to provide at low cost. Next, each part of the ink sheet cartridge D will be specifically described.

(Frame) The frame 27 in this embodiment has a first casing 27a and a second casing 27b ultrasonically welded together. That is,
As shown in FIG. 3, the welded portions 27c1 and 27c2 of the connecting portion between the first casing 27a and the second casing 27b are ultrasonically welded to each other, and the welded portions 27a1 formed at the substantially front end and the side end of the first casing 27a. , 27a4 and the welded portions 27b1 and 27b6 formed at substantially the front and side ends of the second housing 27b by ultrasonic welding. The welded portions 27a1, 27b1 and 27c1, 27c2 may be formed over the entire length or may be formed intermittently with a predetermined length in the ink sheet width direction. The molding material of the frame 27,
It is possible to use resins such as polypropylene resin and ABS resin. In the frame 27, a window 27d, which is an opening for inserting the recording head 3a, is formed substantially in the center of the first housing 27a, as shown in FIG.
A window 27e, which is an opening for inserting the platen roller 3b, is formed substantially in the center of b, and a notch for escaping the shaft portion 3b1 (see FIG. 1) of the platen roller 3b continuously to this window 27e. 27e1 is formed.

Side plates 27a2 and 27b2 are formed upright on both side surfaces of the first housing 27a and the second housing 27b, respectively, and the welded portions 27c1, 27c2 and the open side are respectively ¼ yen. A curved surface is formed. A fitting hole 27a3 is formed in the welded portion 27a1 formed on the open side curved surface end of the first housing 27a, and a welded portion formed on the open side curved end of the second housing 27b.
27b1 is formed with a fitting projection 27b3 which is fitted into the fitting hole 27a3. A locking projection 27b4 that engages with a lock latch provided on the recording cover 9 when the ink sheet cartridge D is mounted on the recording cover 9 is formed on the open side curved surface of the second housing 27b. Further, the side plate 27b2 of the second housing 27b
At a predetermined position on both sides of the guide pin 27f, which serves as a guide when the ink sheet cartridge D is mounted on the recording cover 9.
Are formed.

At predetermined positions of the side plates 27a2, 27b2, a U groove 27g1 for holding a bearing 28a mounted on one end of the supply reel 25, and a shaft portion 29a of a slip clutch 29 attached to the other end of the supply reel 25. Bearings mounted on one end of the take-up reel 26 while forming a square groove 27g2 for holding the
A U groove 27g3 for holding 28b and a U groove 27g4 for holding the shaft portion 30a of the slip clutch 30 attached to the other end of the take-up reel 26 are formed. Also, the side plates 27a2, 27
U grooves 27g5 and 27g6 for holding the bearing 31a of the capstan roller 31 as the ink sheet conveying means are formed in b2. Further, an opening 27h for exposing the reel gear 32 of the take-up reel 26 is formed in the second housing 27b.

(Supply Reel and Slip Clutch) The supply reel 25 is for winding the ink sheet 2.
As shown in FIG. 3, this is a flange 25b1 at both ends of a reel shaft 25a having a length substantially the same as the width of the ink sheet 2.
25b2 is provided, a bearing 28a is loaded on one flange 25b1 side, and a slip clutch 29 which is a tension applying means is attached to the other flange 25b2 side.

The slip clutch 29 is for applying back tension to the ink sheet 2 pulled out from the supply reel 25. As shown in the exploded view of FIG. 4 (a) and the sectional view of FIG. 4 (b), this slip clutch 29 is mounted so that a spring 29b is tightened on a shaft 29a having two-sided ends. This spring 29b
A hook portion 29b1 is formed on the. And the spring 29b
Insert the shaft 29a attached to the through hole 29c1 of the collar 29c,
Attach the ring 29d to the tip of the shaft 29a to prevent it from coming off.
At this time, the hook portion 29b1 of the spring spring 29b is attached so as to be locked in the recess 29c2 formed in the through hole 29c1. Further, a convex portion 29c3 fitted into the hollow reel shaft 25a of the collar 29c and protrudingly provided on the outer peripheral portion of the collar 29c is provided with a protrusion 29c3.
It is fitted and locked in the U-shaped groove 25c formed at the end of the.

In the above structure, the supply reel 25 is attached to the frame 27.
When the ink sheet 2 is pulled out while attached to
The supply reel 25 rotates in the direction of arrow c in FIG. 4A (the direction in which the ink sheet 2 is fed). At this time, the shaft 29a is a frame body
Since it is locked in the square groove 27g2 of 27 and cannot rotate,
The spring spring 29b fastening the 29a receives a rotational force in the slack direction, and a friction load is generated between the outer circumference of the shaft 29a and the inner circumference of the spring 29b. This frictional load causes the ink sheet 2 to receive a conveying force, and when the supply reel 25 receives a rotating force of a predetermined torque or more, the spring 29b slides on the outer periphery of the shaft 29a while receiving the predetermined torque.

Therefore, from the supply reel 25 to the ink sheet 2
When pulling out the ink, a constant load is always applied, and thereby a back tension is applied to the ink sheet 2. Since the value of the slack torque load of the spring spring 29b is stable, a stable back tension is applied to the ink sheet 2.

As shown in FIG. 4 (a), a ratchet 36 having pawls in the circumferential direction is attached to the flange 25b2 on the side to which the slip clutch 29 is attached, and this ratchet 36 is supplied. It rotates in synchronization with the reel 25.

(Take-up reel and slip clutch) Next, the take-up reel 26 winds the ink sheet 2 pulled out from the supply reel 25 at the time of recording. As shown in FIG. 3, like the supply reel 25 described above, flanges 26b1 and 26b2 are provided at both ends of a reel shaft 26a having a length substantially the same as the width dimension of the ink sheet 2, and one flange 26b1 is provided.
A bearing 28b is loaded on the side, and a slip clutch 30 as a rotational force transmission limiting means is attached to the other flange 26b2 side.

The slip clutch 30 is for applying a constant rotational torque to the take-up reel 26. The structure of this slip clutch 30 is shown in the exploded view of FIG. 5 (a) and FIG. 5 (b).
As shown in the sectional view of FIG. 1, a spring 30b is attached to a shaft 30a having a D-cut fitting portion 30a1 so as to be tightened, and a hook 30b1 is formed on the spring 30b. Then, while the reel gear 32 is loosely fitted to the shaft portion 30a to which the spring 30b is attached, the shaft portion 30a is inserted into the through hole 30c1 of the collar 30c, and the E rings 30d and 30e are attached to the end portion of the shaft portion 30a and removed. Stop. At this time, the hook portion 30b1 of the spring spring 30b is formed in the recess 32 formed in the reel gear 32.
It is attached so as to be locked to a. Further, the flange 30c is fitted into the hollow reel shaft 26a, and a convex portion 30c2 protruding on the outer peripheral portion of the flange 30c is formed in a U-shaped groove 26 at the end of the reel shaft 26a.
Insert it into c and lock it.

In the above structure, the reel gear 32 is moved in the direction of the arrow d in FIG.
Is rotated in the direction to wind up the ink sheet 2), the shaft part
The spring spring 30b fastening the spring 30a receives a rotational force in the slack direction, and a friction load is generated between the outer circumference of the shaft portion 30a and the inner circumference of the spring spring 30b. Upon receiving this frictional load, the take-up reel 26 rotates in the direction of arrow d in FIG. 5A to wind up the ink sheet 2.

When the spring 30b receives a predetermined torque or more, it slides on the outer periphery of the shaft portion 30a while applying the predetermined torque. Therefore, the take-up reel 26 is always given a rotational force with a constant torque. The slack torque load of the spring spring 30b is stable as in the case of the slip clutch 29 of the supply reel 25.

In this embodiment, the supply reel 25 has a slip clutch 29 built-in, and the take-up reel 26 has a slip clutch 29.
By incorporating the 30 therein, a special space for providing the slip clutches 29, 30 is not required. Therefore, the gears and the like can be easily arranged in the design of the drive system, and the assemblability can be improved. Also, the clutch 29,
Since the ink cartridge 30 is exchanged together with the ink sheet cartridge D, the durability of one roll of the ink sheet is sufficient. Further, since the clutches 29 and 30 have a simple structure, they have an advantage that they can be manufactured at a lower cost than powder clutches which are commercially available.

Here, in the present embodiment, when the ink sheet 2 is wound on the take-up reel 26, the end portion of the ink sheet 2 is attached to the take-up reel 26a with a tape or the like, and the ink sheet 2 The take-up reel 26 is rotated so that the ink application surface faces the inside of the take-up roll.

(Capstan Roller) Next, the capstan roller 31 applies a conveying force to the ink sheet 2, and in this embodiment, it is housed in the ink sheet cartridge D as shown in FIG. There is. This capstan roller 31 is formed by spraying silicone rubber or the like onto the outer peripheral surface of a core portion 31b made of a metal material to form a roller portion 31c, and fixing a gear 31d to the end portion of the core portion 31b. ing. The capstan roller 31 is a U groove 27g5 of the frame 27,
The bearing 31a is fitted and attached to 27g6, but is attached so as to be positioned on the upper surface side of the ink sheet 2 housed in the frame 27 (see FIG. 3). And the ink sheet cartridge D
When recording is carried out by loading the ink into the recording system A, as shown in FIG. 1, the recording and conveying direction of the ink sheet 2 (direction of arrow b in FIG. 1)
At the downstream side of the recording means 3, the take-up reel
The capstan roller 31 is configured to contact the upper surface side of the ink sheet 2 on the upstream side of 26.

At the time of recording, the ink sheet 2 is conveyed by a capstan roller 31 which rotates in the direction of arrow e in FIG. In the multi-print method in which recording is performed while the recording sheet 1 and the ink sheet 2 are conveyed in opposite directions as in this embodiment, a force of about 15 kg at maximum is required as the force for conveying the ink sheet 2. There is. Therefore, in this embodiment, the capstan roller 31 and the ink sheet 2 are used.
If the friction coefficient is set to be in the range of 10 to 20, slip between the two can be prevented. In this embodiment, the friction coefficient is set to about 14.

Further, as shown in FIG. 6, the larger the wrap angle θ of the ink sheet 2 with respect to the capstan roller 31, the larger the contact area between the capstan roller 31 and the ink sheet 2 and the less likely slippage occurs. Therefore, in this embodiment, the winding angle θ is set to about 30 ° in a state where the ink sheet 2 is not wound around the take-up reel 26 (minimum take-up roll diameter). As is clear from FIG. 1, since the ink surface of the ink sheet 2 is wound inward, when the diameter of the winding roll is increased, the winding angle θ is increased.
Also grows. Therefore, the ink sheet 2 is taken up by the take-up reel 26.
The ink sheet conveying force is surely given by the capstan roller 31 as it is wound up. The wrapping angle θ basically has only to be that the capstan roller 31 and the ink sheet 2 are in contact with each other. However, if the dimensional accuracy of the recording apparatus body 6 and the ink sheet cartridge D is considered, Depending on the capstan roller diameter,
It is advisable to set it within the range of 5 ° ≦ θ ≦ 180 °.
In this embodiment, the winding angle θ is changed within the range of 30 ° or more and 90 ° or less depending on the change of the winding roll diameter.

As described above, the capstan roller 31 having a high friction coefficient is wound around the ink sheet 2 at a predetermined winding angle θ so that the conveyance force is applied to the ink sheet 2 only by the capstan roller 31. Since it can be performed by the above, the conventional pinch roller becomes unnecessary.

(Assembly of Ink Sheet Cartridge) Next, in order to assemble the ink sheet cartridge D, the supply reel shaft 25a around which the ink sheet 2 shown in FIG. 3 is wound.
A bearing 28a is attached to one end, and the bearing 28a is attached to the second housing.
The U-shaped groove 27g1 formed in 27b is fitted, and the two-sided shaft portion 29a of the slip clutch 29 is fitted in the square groove 27g2.
Further, attach a bearing 28b to one end of the take-up reel shaft 26a,
The bearing 28b is fitted into the U groove 27g3 of the second housing 27b, and a bearing (not shown) attached to the shaft portion 30a of the slip clutch 30 is fitted into the U groove 27g4. And capstan roller
U-grooves 27g5, 27g6 in which 31 bearings 31a are formed in the second housing 27b
To fit. Next, the first casing 27a is opposed to the second casing 27b, and the welded portions 27a1 and 27b1 and the welded portions 27a4 and 27b6 are ultrasonically welded to each other, whereby the ink sheet 2, the supply reel 25, the take-up reel 26, Then, the ink sheet cartridge D loaded with the capstan roller 31 is assembled.

(How to load the ink sheet cartridge)
Next, the loading method of the ink sheet cartridge D will be described with reference to FIG. 1, and the state of the transport surface of the ink sheet 2 when the ink sheet cartridge D is loaded will be described.

First, when the ink sheet cartridge D is loaded into the recording cover 9, the recording cover 9 in the recording system A is opened as shown in FIG. A guide pin 27f formed at the base of the cartridge D is locked in the stopper recess 9a to hold one end side of the ink sheet cartridge D in the recording cover 9. Next, the ink sheet cartridge D (the position indicated by the broken line in FIG. 1) held by the recording cover 9 is pushed up in the direction of arrow f in FIG. 1, and the locking protrusion formed at the tip of the cartridge D.
27b4 is locked by the latch member 33 attached to the recording cover 9, and the ink sheet cartridge D is set on the recording cover 9.

At this time (when the ink sheet cartridge D is set on the recording cover 9), the capstan roller 31 is moved by the guide shaft 34 provided on the recording cover 9 side.
The ink sheet 2 between the sheet and the supply reel 25 is pushed down, and a first bent portion is formed on the transport surface of the ink sheet 2.

The ink sheet cartridge D is loaded into the apparatus main body 6 by closing the recording cover 9 on which the ink sheet cartridge D is set, so that the capstan roller is attached to a positioning member (not shown) on the apparatus main body 6 side. 31 is positioned and supported, and accordingly, the ink sheet cartridge D is positioned and loaded at a predetermined position of the recording system A in the apparatus main body 6 (solid line position in FIG. 1).

At this time (when the ink sheet cartridge D is loaded in the apparatus main body 6), the ink sheet 2 between the guide shaft 34 and the supply reel 25 is pushed up by the guide shaft 35 provided on the apparatus main body 6 side. As a result, a second bent portion is formed on the transport surface of the ink sheet 2.

Therefore, since the transport surface of the ink sheet 2 is formed by the capstan roller 31, the platen roller 3b, and the guide shafts 34 and 35, the usage amount of the ink sheet 2, that is, the diameter of the supply reel 25 and the diameter of the take-up reel 26. Regardless of
The transport surface of the ink sheet 2 can be kept constant, and therefore, the ink sheet 2 can be kept near the platen roller 3b.
Since the angle of contact with the recording sheet 1 can be made constant, the thermal control of the recording head 3a can be set with high precision, and the printing quality can be improved.

(Bent portion of ink sheet conveying surface) Further, the first and second bent portions of the ink sheet 2 constituted by the guide shafts 34 and 35 stick to the ink sheet 2 due to static electricity or the like. The recording sheet 1 can be easily separated, so that the occurrence of sheet jam can be prevented. Hereinafter, this will be described with reference to FIG. 7.

In the case of recording the image signal received from the other apparatus or the image information of the original read by the reading system B of the facsimile itself, as described above, the facsimile apparatus main body 6
In the present recording apparatus, the superposed recording sheet 1 and ink sheet 2 are pressed toward the platen roller 3b by the recording head 3a constituting the recording means 3 in this state. While the recording sheet 1 is conveyed in the direction of arrow a by the platen roller 3b and the ink sheet 2 is conveyed in the direction of arrow b by the capstan roller 31, the recording head 3a is caused to generate heat in accordance with the image signal and applied to the ink sheet 2. The ink is melted and the melted ink is transferred to the recording sheet 1 to form an image.

Therefore, since the conveying directions of the recording sheet 1 and the ink sheet 2 are opposite to each other, there is a relative speed, and strong static electricity is generated on the ink sheet 2. Due to this static electricity, the recording sheet 1 is attracted to and stuck to the ink sheet 2, and the recording sheet 1 is conveyed by the platen roller 3b in the direction of arrow a along the conveying surface of the ink sheet 2 (FIG. 7A). ).

A guide shaft in which the recording sheet 1 is further conveyed and the leading end of the sheet is provided on the recording cover 9 side.
When passing through 34, the ink sheet 2 (thickness of about 2 in this embodiment)
The conveying surface of 17 μm) is turned along the outer diameter of the guide shaft 34 toward the guide shaft 35 provided on the apparatus main body 6 side, but the recording sheet 1 (thickness of about 80 μm in this embodiment).
Is not conveyed along the outer diameter of the guide shaft 34 by its waist and is separated from the conveyance surface of the ink sheet 2 (see FIG. 7).
(B)).

The separated recording sheet 1 is then guided by the sheet metal portion 4a of the cutter 4 and further conveyed by the platen roller 3b (FIG. 7 (c)). As described above, the recording sheet 1 stuck to the ink sheet 2 due to static electricity or the like by the first and second bent portions of the ink sheet 2 constituted by the guide shafts 34 and 35.
Can be separated from the conveying surface of the ink sheet 2, and therefore the occurrence of sheet jam can be prevented.

The recording sheet 1 on which one page has been printed is further conveyed by the platen roller 3b and cut by the cutter 4 in order to cut it at an appropriate position. After cutting, the platen roller 3b is rotated in the reverse direction to rewind the leading end of the recording sheet 1 to the vicinity of the heat generating line of the recording head 3a, and waits for printing the next page.

(Structure and Operation of Lock Mechanism) A lock mechanism for preventing the ink sheet 2 from slacking when the recording sheet 1 is rewound will be described with reference to FIGS. 8 and 9. The lock mechanism in this embodiment is provided on the supply reel 25 side as shown in FIG. 8, and is provided on the ratchet 36 as a rotating member that rotates in synchronization with the supply reel 25, and on the outer periphery of the ratchet 36. And an IS stopper 37 as a rotation stopping member that meshes with the claw and stops the rotation of the supply reel 25. Ratchet
The 36 has a claw on its outer circumference as described above, and is attached to the flange 25b2 side provided at the other end of the supply reel shaft 25a. The IS stopper 37 is pulled in the direction of arrow g in FIG. 8 by a spring (not shown), and is rotated by the cutter lever 38 which receives the driving force of the cutter motor.
It is configured to move in parallel to the ratchet 36 direction in conjunction with the operation of.

Next, the operation of the platen motor, the cutter motor, and the ink sheet motor from the end of printing one page to the start of printing the next page will be described with reference to the timing chart shown in FIG. To do.

First, after the printing of one page is completed, the platen motor is further driven in the normal direction to convey the recording sheet 1 to the cutting position by the platen roller 3b. While the recording sheet 1 is being conveyed to the cutting position, the ink sheet motor is stopped and the ink sheet 2 is not conveyed in order to reduce the running cost. Also, since the ink sheet motor is stopped, the recording sheet 1 and the ink sheet 2 are
The ink sheet 2 wound by the take-up reel 26 will not be loosened by the force of friction between the ink sheet 2 and the ink.

After the recording sheet 1 is conveyed to the cutting position,
A cutter motor is driven to cut the recording sheet 1 with the cutter 4. This cutter motor has a cutter lever 38 with the cutter 4 attached (see FIG. 8).
Are connected via an arm 39, and the driving force is transmitted to the cutter lever 38 via the arm 39 by driving the cutter motor by a preset number of steps, whereby the cutter 4 moves the recording sheet 1 Disconnect.

At this time, the IS stopper is interlocked with the operation of the cutter lever 38 rotating to the position shown by the solid line in FIG.
37 moves in parallel to the position indicated by the solid line in FIG.
The catch of the ratchet 36, which rotates in synchronism with the rotation of the ink cartridge, prevents the supply reel 25 from rotating, and thus the ink sheet 2
Lock the movement of.

After cutting the recording sheet 1, the platen motor is driven in reverse to rewind the leading end of the recording sheet 1 to a position near the platen roller 3b. At this time, supply reel
Since 25 is locked, the ink sheet 2 will not loosen.

After the recording sheet 1 is rewound, the cutter motor is driven to return the arm 39 and the cutter lever 38 to the position indicated by the broken line in FIG. 8 and return the cutter 4 to the home position. At this time, the IS stopper 37 receives a force in the direction of arrow g in FIG. 8 by a spring (not shown), moves to the position of the broken line in FIG. 8 and disengages from the pawl of the ratchet 36, and the lock of the supply reel 25 is released. It Therefore, the lock of the ink sheet 2 is released, and the printable state is set.

[Second Embodiment] In the first embodiment described above,
The guide shaft 3 is provided on the recording cover 9 side and the device body 6 side, respectively.
4, 35 are provided so that the first and second surfaces of the ink sheet 2 are conveyed.
Although an example in which the bent portion is configured is shown, another embodiment relating to it will be described as a second embodiment.

FIG. 10 shows an outline of the entire configuration of a facsimile apparatus to which the present invention is applied. The overall configuration of the device in this embodiment is substantially the same as the configuration of the device (see FIG. 1) described in the first embodiment described above, and therefore detailed description thereof is omitted here. The members having the same functions as the members described in the first embodiment are given the same reference numerals.

(Bent portion of ink sheet transport surface) In this embodiment, a part of the exterior of the ink sheet cartridge D, that is, the drawing
As shown in FIG. 10, by the hook-shaped convex portion 40 integrally formed on the frame body of the ink sheet cartridge D and the guide shaft 35 provided on the apparatus main body 6 side, the first surface of the ink sheet 2 is conveyed. It is characterized in that the second bent portion is configured.

The first bent portion is formed when the ink sheet cartridge D is assembled by the hook-shaped convex portion 40 integrally formed with the frame 27 of the ink sheet cartridge D, and the second bent portion is the device. A guide shaft 35 provided on the main body 6 side is configured when the ink sheet cartridge D is loaded. Since the assembling method and the loading method of the ink sheet cartridge D are the same as those in the above-described first embodiment, detailed description thereof will be omitted here.

When recording the image signal received from another apparatus or the image information such as the original read by the reading system B of the present facsimile apparatus as described above, the apparatus main body 6 is used.
In this recording system A, the superposed recording sheet 1 and ink sheet 2 are recorded by the recording means 3
The recording head 3a, which constitutes the above, presses the platen roller 3b toward the platen roller 3b. The ink sheet 2 is generated by causing the head 3a to generate heat according to the image signal.
The ink applied to is melted, and the melted ink is transferred to the recording sheet 1 to form an image.

Therefore, since the recording sheet 1 and the ink sheet 2 are conveyed in opposite directions, there is a relative speed, and strong static electricity is generated on the ink sheet 2. Due to this static electricity, the recording sheet 1 is attracted to and stuck to the ink sheet 2, and the recording sheet 1 is conveyed by the platen roller 3b in the direction of arrow a along the conveying surface of the ink sheet 2 (FIG. 11 (a)). ).

When the recording sheet 1 is further conveyed and the leading end of the sheet passes through the hook-shaped convex portion 40 integrally formed with the frame 27 of the ink sheet cartridge D, the ink sheet 2
The conveying surface (having a thickness of about 17 μm in this embodiment) is a guide shaft provided on the apparatus main body 6 side along the outer diameter of the convex portion 40.
The recording sheet 1 (thickness of about 80 μm in the present embodiment) is separated from the conveying surface of the ink sheet 2 by the waist, although the direction is changed to 35 (not shown). 11 (b)).

The separated recording sheet 1 is then guided by the sheet metal portion 4a of the cutter 4 and further conveyed by the platen roller 3b (FIG. 11 (c)). The recording sheet 1 on which printing of one page has been completed is further conveyed by the platen roller 3b in order to cut it at an appropriate position, and then cut by the cutter 4. After cutting, the platen roller 3b is rotated in the reverse direction to rewind the leading end of the recording sheet 1 to the vicinity of the heat generating line of the recording head 3a, and waits for printing the next page.

As described above, the ink sheet 2 is constituted by the hook-shaped convex portion 40 integrally formed on the frame 27 of the ink sheet cartridge D and the guide shaft 35 provided on the apparatus main body 6 side. The first and second bent portions can easily separate the recording sheet 1 adhered to the ink sheet 2 due to static electricity or the like from the transport surface of the ink sheet 2, thus preventing the occurrence of sheet jam. To be done.

[Third Embodiment] In the first embodiment described above,
As a member that rotates in synchronization with the supply reel 25, a ratchet 36 having a claw on the outer periphery is provided, and further, as a member that locks the rotation of the supply reel 25 when the recording sheet 1 is rewound, it is interlocked with the operation of the cutter lever 38. An IS stopper 37 that moves in parallel is provided to exemplify a lock mechanism configured to prevent the ink sheet 2 from slackening when the recording sheet 1 is rewound. Another embodiment relating to this will be described as a third embodiment.

The above-mentioned facsimile apparatus of the first embodiment employs a so-called multi-print method in which the ink sheet 2 is conveyed at a slower speed than the recording sheet 1 in order to reduce the running cost. However, the transport length L _I of the ink sheet 2 is shorter than the transport length L _P of the recording sheet 1 at the time of recording (L _P / L _I = n> 1).
Although the recording sheet 1 and the ink sheet 2 are conveyed in the opposite directions, the facsimile apparatus according to the present embodiment has a recording sheet 1 conveying speed and an ink sheet 2 conveying speed. And the recording sheet 1 and the ink sheet 2 are conveyed in the same direction. Therefore, as shown in FIG. 12, the supply reel 25 and the take-up reel for the apparatus main body 6
The positional relationship of 26 is opposite to that of the facsimile apparatus of the first embodiment described above. Since the other configurations are substantially the same as the configurations of the device (see FIG. 1) described in the first embodiment, detailed description thereof will be omitted here. The members having the same functions as the members described in the first embodiment described above are designated by the same reference numerals.

(Structure and Operation of Lock Mechanism) Next, the structure and operation of the lock mechanism for locking the ink sheet 2 from the end of printing to the start of printing will be described with reference to FIG.
It will be described with reference to FIGS.

(1 of the third embodiment) A lock mechanism as shown in FIG. 13 is provided on the supply reel 25 side, and is provided so as to be rotatable around the fulcrum 41a on the ratchet 36 and the apparatus main body side. And an IS stopper 41 and a cam 42 for switching the IS stopper 41 between a locked position (solid line position in FIG. 13) and an unlocked position (broken line position in FIG. 13). The IS stopper 41 is pulled by a spring 43 in the direction of arrow h in FIG. Furthermore, the cam
Reference numeral 42 is connected to a cutter motor via a gear train (not shown), and the gear train is provided with a one-way clutch (one-way clutch) for transmitting a rotational force in only one direction. Therefore, the cam 42 in this embodiment is configured to rotate only in the direction of arrow i in FIG.

Next, the supply reel 25 by the lock mechanism
Locking and unlocking operations will be described with reference to the timing chart of FIG. After the recording of one page is completed, the cutter motor is first driven in the reverse direction to transmit the driving force to the cam 42 through the gear train, and the cam 42 is held in a state of being rotated 180 ° (solid line position in FIG. 13). . Then IS stopper 41
Rotates to the supply reel 25 side according to the shape of the cam 42 and firmly meshes with the pawl of the ratchet 36, so that the supply reel 25 is locked. Therefore, the ink sheet 2
Movement is locked.

After locking the supply reel 25, the platen motor is driven in the normal direction to rotate the platen roller 3b, and the recording sheet 1 is conveyed to a predetermined cutting position.

Then, the cutter motor is driven in the forward direction,
The recording sheet 1 is cut. Since the above-described one-way clutch is provided in the driving force transmission path between the cutter motor and the cam 42, the driving force at the time of forward driving of the cutter motor is not transmitted to the cam 42.

After cutting the recording sheet, the platen motor is reversely driven to rotate the platen roller 3b in the reverse direction, and the leading end of the recording sheet 1 is returned to the printing position. At this time, supply reel 25
Since the ink sheet 2 is locked, the ink sheet 2 will not be transported and loosened, and the ink sheet 2 itself will not be wrinkled or cut.

After the front end of the recording sheet 1 is rewound to the printing position, the cutter motor is reversely driven to transmit the driving force to the cam 42 through the gear train and rotate the cam 42 by 180 ° (FIG. 13). (Broken line position of), IS stopper 41 is the cam
According to the shape of 42, the supply reel 25 is unlocked by rotating to the position shown by the broken line in FIG. Therefore, the lock of the ink sheet 2 is released, and the printable state is set.

(2 of the third embodiment) Further, in the above-mentioned embodiment, when the recording sheet 1 is conveyed in the direction opposite to the conveying direction of the ink sheet 2, the ink sheet motor is kept stopped. The torque (holding torque) prevents the take-up reel 26 that has wound the ink sheet 2 from rotating in the reverse direction, and prevents the ink sheet 2 from loosening. However, the conveying force of the recording sheet 1 is held by the ink sheet motor. If the force is larger than the torque, the take-up reel 26
When the ink sheet 2 is pulled out from the recording sheet 1 (for example, the ink of the ink sheet 2 causes the recording sheet 1 and the ink sheet 2 to
In some cases, such as when the recording sheet 1 is conveyed in the state where and are attached, the locking mechanism described above may be provided on both the supply reel 25 side and the take-up reel 26 side in preparation for such a case.

FIG. 15 shows an example in which the lock mechanism is provided on both the supply reel 25 side and the take-up reel 26 side. Each of the lock mechanisms shown in FIG. 15 has the same structure as the lock mechanism shown in FIG. 13 described above.
And an IS stopper 41 rotatably provided on the apparatus body side around a fulcrum 41a, a lock position (solid line position in FIG. 15) and an unlock position (dotted line position in FIG. 15) of the IS stopper 41. And a cam 42 for switching to. The IS stopper 41 is pulled by a spring 43 in the direction of arrow h in FIG. Further, the cam 42 is
It is connected to a cutter motor through a gear train (not shown), and the gear train is provided with a one-way clutch (one-way clutch) for transmitting a rotational force in only one direction. Therefore, the cam 42 in this embodiment is the arrow i in FIG.
It is configured to rotate only in the direction. Since the locking and unlocking operations of the supply reel 25 and the take-up reel 26 by this lock mechanism are performed according to the timing chart shown in FIG. 14, detailed description thereof will be omitted here.

Since the supply reel 25 and the take-up reel 26 are both locked by the above structure, the holding torque is not generated by the ink sheet motor during the period from locking to unlocking (see FIG. 14). The ink sheet 2 is not loosened and the temperature rise of the ink sheet motor is further suppressed.

(3 of the third embodiment) Furthermore, a lock mechanism as shown in FIG. 16 may be provided. This locking mechanism is a rubber material 44 provided on the outer peripheral portion of the flange 25b2 of the supply reel 25.
And a stopper 45 rotatably provided around the fulcrum 45a on the apparatus main body side to prevent the supply reel 25 from rotating by being pressed against the rubber material 44.
Is connected to the gear 47 by the connecting arm 46, and the gear 47
It is configured to rotate in the direction of the arrow in the figure according to the rotation of the. A cutter motor is driven via a gear (not shown) between the gear 47 for transmitting the driving force to the stopper 45 and the gear 48 for transmitting the driving force to the cutter 4 (see FIG. 12). A gear 49 that receives a force and a pendulum gear 50 that swings and rotates around the gear 49 are provided. With this pendulum gear 50, the rotational force in one direction of the cutter motor is applied to the cutter 4 and the rotational force in the other direction is applied to the stopper 45.
Is transmitted.

Next, the supply reel 25 by the lock mechanism
Locking and unlocking operations will be described with reference to the timing chart of FIG.

When the printing for one page is completed, the platen motor and the ink sheet motor are stopped, and the cutter motor is driven in the reverse direction to rotate the gear 49 in the direction of arrow j in FIG. The rotational force of the gear 49 is transmitted to the pendulum gear 50,
16 rotates in the direction of arrow k in FIG. 16 and meshes with the gear 47 about the gear 49. When the pendulum gear 50 meshes with the gear 47, the rotational force of the pendulum gear 50 is transmitted to the gear 47, the gear 47 rotates in the direction of arrow m in FIG. 16, and this rotational force is stopped via the connecting arm 46. After being transmitted to 45, the stopper 45 is pressed against the rubber material 44 provided on the outer peripheral portion of the flange 25b2 (solid line position in FIG. 16). Thereby, the rotation of the supply reel 25 is suppressed and the conveyance of the ink sheet 2 is locked.

After the cutter motor is stopped, the platen motor is normally driven to rotate the platen roller 3b in the direction of arrow n in FIG. 16 to convey the recording sheet 1 to a predetermined cutting position.

After the platen motor is stopped, the cutter motor is normally driven to rotate the gear 49 in the direction opposite to the arrow j direction in FIG. With this rotational force, the pendulum gear 50 meshes with the gear 48, the gear 48 rotates, and the cutter 4 (see FIG. 12) cuts the recording sheet 1.

After cutting the recording sheet, before rewinding the leading end of the recording sheet 1 to the recording position, the cutter motor is driven in the reverse direction again to firmly fix the supply reel 25 by the stopper 45. After the cutter motor is stopped, the platen motor is driven in reverse to rotate the platen roller 3b in the direction of arrow o in FIG. 16 to rewind the recording sheet 1 to the recording position.
At this time, since the supply reel 25 is locked, the ink sheet 2 will not loosen.

After rewinding the recording sheet 1, the platen motor is stopped and the cutter motor is driven in reverse again to unlock the supply reel 25 by the stopper 45 (FIG. 16).
Broken line position).

After releasing the lock, by driving only the ink sheet motor, tension is applied to the ink sheet 2 so that the ink sheet 2 is ready for printing.

By controlling each motor as described above, the slack of the ink sheet 2 due to the conveyance of the recording sheet 1 from the end of printing to the start of printing is prevented. Therefore, it is possible to prevent the ink sheet 2 from wrinkling and deteriorating the printing quality, and the ink sheet 2 from being torn.

[0087]

As described above, when the ink sheet conveying surface on the recording medium discharge side of the recording means is bent at two or more positions, the ink is generated between the recording medium and the ink sheet. Even if the recording medium sticks to the transport surface of the ink sheet due to static electricity, it can be easily separated, thus preventing the occurrence of sheet jam, and thus preventing the recording mechanism from malfunctioning. The overall reliability can be improved.

[Brief description of drawings]

FIG. 1 is a diagram illustrating the overall structure of a facsimile device.

FIG. 2 is an external perspective view of a facsimile device.

FIG. 3 is a development explanatory view of an ink sheet cartridge.

FIG. 4 is a structural explanatory view of a slip clutch on the supply reel side.

FIG. 5 is a structural explanatory view of a slip clutch on the take-up reel side.

FIG. 6 is an explanatory diagram of a wrap angle of an ink sheet with respect to a capstan roller.

FIG. 7 is an explanatory diagram showing the movement of the recording sheet at the bent portion of the ink sheet conveyance surface.

FIG. 8 is an explanatory diagram of an ink sheet lock mechanism.

FIG. 9 is a timing chart showing the operation of the drive mechanism.

FIG. 10 is a diagram illustrating the overall structure of a facsimile device.

FIG. 11 is an explanatory diagram showing the movement of the recording sheet at the bent portion of the ink sheet conveyance surface.

FIG. 12 is a diagram illustrating the overall structure of a facsimile device.

FIG. 13 is an explanatory diagram of an ink sheet lock mechanism.

FIG. 14 is a timing chart showing the operation of the drive mechanism.

FIG. 15 is an explanatory diagram of an ink sheet lock mechanism.

FIG. 16 is an explanatory diagram of an ink sheet lock mechanism.

FIG. 17 is a timing chart showing the operation of the drive mechanism.

FIG. 18 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

A ... recording system, B ... reading system, C ... operation part, D ... ink sheet cartridge 1 ... recording sheet, 2 ... ink sheet, 3
Recording means 3a Recording head 3b Platen roller 4 Cutter 5a 5b Discharging roller pair 6 Main body 8 Rotating shaft 9 Recording cover 10 Original 11a
... preliminary conveying roller, 11b ... pressing piece, 12a ... separating roller,
12b ... Pressure contact pieces, 13a, 13b ... Conveying rollers, 14a, 14b ...
Ejection roller, 15 ... Ejection tray, 16 ... Light source, 17 ... Mirror,
18 ... Lens, 19 ... Photoelectric conversion element, 20 ... Handset, 21
... Electrical circuit board, 22 ... Power supply section, 25 ... Supply reel, 25a ... Reel shaft, 25b1, 25b2 ... Flange, 25c ... U-shaped groove, 26 ... Take-up reel, 26a ... Reel shaft, 26b1, 26b2 ... Flange, 26
c ... U-shaped groove, 27 ... Frame, 27a ... First housing, 27a1 ... Welding part, 27a2 ... Side plate, 27a3 ... Fitting hole, 27a4 ... Welding part, 27b ...
Second housing, 27b1 ... Welding portion, 27b2 ... Side plate, 27b3 ... Fitting protrusion, 27b4 ... Locking protrusion, 27b6 ... Welding portion, 27c1, 27c2 ... Welding portion, 27d, 27e ... Window, 27f ... Guide pin, 27g1 ... U groove,
27g2 ... Square groove, 27g3, 27g4, 27g5, 27g6 ... U groove, 27h ... Opening, 28a, 28b ... Bearing, 29 ... Sliding clutch, 29a ... Shaft,
29b ... Spring spring, 29b1 ... Hook part, 29c ... Tsuba, 29
c1 ... through hole, 29c2 ... concave part, 29c3 ... convex part, 29d ... E ring, 30 ... slip clutch, 30a ... shaft part, 30a1 ... D cut fitting part, 30b ... spring spring, 30b1 ... hook part, 30c ...
Collar, 30c1 ... Through hole, 30c2 ... Convex part, 31 ... Capstan roller, 31a ... Bearing, 31b ... Core part, 31c ... Roller part, 31d ...
Gear, 32 ... Reel gear, 34, 35 ... Guide shaft, 36 ...
Ratchet, 37 ... IS stopper, 38 ... Cutter lever, 39 ... Arm, 40 ... Hook-shaped convex portion, 41 ... IS stopper, 41a ... Support point, 42 ... Cam, 43 ... Spring, 44 ... Rubber material, 45
… Stopper, 45a… Support point, 46… Connecting arm, 47, 48,
49 ... Gear, 50 ... Pendulum gear

Claims (2)

[Claims] 1. A recording apparatus which conveys an ink sheet and a recording medium in parallel and selectively records the ink contained in the ink sheet on the recording medium by a recording unit, wherein the recording medium of the recording medium is more than the recording position of the recording unit. A recording apparatus, which is configured such that the transport surface of the ink sheet on the discharge side is bent at two or more locations for transport. 2. The recording apparatus according to claim 1, wherein the ink sheet and the recording medium are configured to be conveyed at a relative speed.