JPH067014U - Recorder - Google Patents

Abstract

(57) [Summary] [Purpose] To be able to always wind an ink ribbon in fixed lengths without electric power with a simple structure. [Structure] The ribbon cassette 13 is provided along the moving direction of the head, and a winding shaft 21a of the ink ribbon 14 is provided at an end position in the moving direction of the head. Winding shaft 2
The lathe 22 of the winding mechanism 20 is connected to the la 1a, and the lathe 22 has a plurality of engaging pins 23. The engagement groove 25b of the engagement arm 25 can be engaged with one engagement pin 23, and the engagement arm 25 pushes the engagement pin 23 by the rotation of the rotation arm 24. The rotating arm 24 is rotated by the contact plate 6d of the head, and the engaging arm 25 moves the engaging pin 23.
The rotary disk 22 is rotated by pressing, and the winding shaft 21a is rotated to wind up the ink ribbon 14.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a recorder that prints and records on recording paper in response to an input signal.

[0002]

[Prior art]

 FIG. 9 is a perspective view showing a conventional recorder. In the figure, a recording head 51 is horizontally mounted between a slide shaft 56 and a guide shaft 57 and is movable by a drive mechanism (not shown), a head 53 mounted in front of the carriage 52, and a carriage 52. Also, it is composed of a ribbon winding portion 54 protrudingly provided on the upper surface of the head 53, and a ribbon cassette 55 which is detachably attached to the ribbon winding portion 54 in the lateral direction. The recording head 51 causes a recording paper 59 on a platen 58 provided below to perform recording operation such as printing.

On the bottom surface of the head 53, a plurality of hitting pins 60 are arranged side by side in a direction orthogonal to the feeding direction of the recording paper 59. The ribbon cassette 55 accommodates an endless ink ribbon 63 composed of color areas of a plurality of colors corresponding to the number of the dot pins 60. A part of the ink ribbon 63 is exposed and stretched at a position directly below the hitting pin 60 in the same direction as the recording paper 59 feeding direction. The ink ribbon 63 is wound in one direction by the ribbon winding section 54. The ribbon winding unit 54 has a built-in drive mechanism including a motor and a gear for feeding the ink ribbon 63.

In the recorder having the above structure, the feeding direction of the recording paper 59 is the time axis, and the width direction is the effective recording width including the zero point of the input signal and the span length. Further, each color of the ink ribbon 63 is used corresponding to each channel of the input signal, for example. Therefore, after the carriage 52 moves to a position corresponding to the input signal in the direction orthogonal to the feeding direction of the recording paper 59 and stops, one of the dot pins 60 corresponding to the channel selectively projects, and the corresponding ink is ejected. The dots are recorded on the recording paper 59 in the color of the ribbon 63. Then, the ink ribbon 63 is fed a predetermined amount by the driving force of the ribbon winding section 54 after the dot recording.

[0005]

[Problems to be solved by the device]

 However, in the conventional recorder, a ribbon winding section 54 dedicated to winding the ink ribbon 63 in the ribbon cassette 55 is provided, so that a motor or the like is required, cost is high, and driving power is required. There was a problem to do. By the way, there is a device that winds the ink ribbon in synchronization with the movement of the head, but this device has a problem that the winding length changes depending on the movement amount of the head.

The present invention has been made in view of the above problems, and provides a recorder capable of always winding an ink ribbon at a constant length with a simple configuration without using electric power. And is intended.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the recorder of the present invention will be described with reference to FIG. 2. The recorder which prints and records the information of the input signal by the dot pin 6b of the head 6 which is movable in the width direction of the recording paper 17. In the width direction of the recording paper 17, a ribbon cassette 13 for accommodating the ink ribbon 14 stretched so as to face the recording paper 17, and a contact plate 6d fixed to the head 6, In the ribbon cassette 13, it is connected to the winding shaft 21a of the ink ribbon 14 provided at the end of the head 6 in the moving direction, and the winding shaft 21a is engaged with the contact plate 6d at a predetermined angle. It is characterized by having a winding mechanism 20 for rotating.

[0008]

According to the above configuration, the ink ribbon 14 of the ribbon cassette 13 is stretched along the width direction of the recording paper 17, and the head 6 moves to print and record the information of the input signal. Then, when the head 6 moves to the end of the ribbon cassette 13, the contact plate 6 d provided on the head 6 engages with the winding mechanism 20. As a result, the winding mechanism 20 can rotate the winding shaft 21a of the ribbon cassette 13 by a predetermined angle and wind the ink ribbon 14 by a predetermined amount. In this way, the ink ribbon 14 can be wound only by the movement operation of the head 6, and each time the head 6 moves to the end of the ribbon cassette 13, it is wound by a predetermined amount.

[0009]

【Example】

 1 is a front view showing a first embodiment of a recorder according to the present invention, and FIG. 2 is a partially enlarged perspective view of FIG. A guide shaft 5 is connected between the side portions of the device, and a head 6 is rotatably supported on the guide shaft 5 so as to be movable in the width direction of the device. The head 6 is movable along the guide shaft 5 by driving a head motor (not shown). Inside the head 6, a dot mechanism 6c including an electromagnetic coil and an amateur is built in, and a plurality of dot pins 6b are formed at the tip of the head 6 so as to project. When the electromagnetic coil is energized, the dot pin 6b projects and is returned by the spring member.

A ribbon cassette 13 is provided upright on the upper side in the moving direction of the head 6. The ribbon cassette 13 accommodates an endless ink ribbon 14 inside, and a part of the ink ribbon 14 is stretched out from between the guide portions 13a and 13b which are formed to project downward on both sides. . Then, the ink ribbon 14 is positioned on the side of the dot pin 6b at the tip of the head 6. A platen 16 is rotatably provided on the opposite side of the head 6 with the ink ribbon 14 interposed therebetween, and feeds out the recording paper 17.

By the way, on the side surface of the ribbon cassette 13, a winding mechanism 20 shown in FIG. The take-up mechanism 20 will be described. A turntable 22 is connected and fixed to an end of a take-up shaft 21a for taking up the ink ribbon 14 in the ribbon cassette 13, and is rotatable together with the take-up shaft 21. A driven shaft 21b is provided so as to face the winding shaft 21a, and the below-described winding is performed with the ink ribbon 14 sandwiched between the winding shaft 21a and the driven shaft 21b.

As shown in the partially enlarged front view of FIG. 3, a plurality of engagement pins 23a to 23g are provided on the turntable 22 at predetermined angles. A rotary arm 24 is rotatably provided on the side of the turntable 22 about a support shaft 24a at the base end, and the turn arm 24 is separated from the turntable 22 by a predetermined angle by a spring member 24b. Biased to position. Further, the positioning roller 26 is biased between the two adjacent engaging pins 23f and 23g in the state of FIG. The support shaft 26a of the positioning roller 26 is biased by a biasing spring 26b toward the center of the turntable 22. Therefore, the turntable 22 is always fixedly held at each predetermined angle by the positioning roller 26 engaging the two adjacent engaging pins 23.

A contact protrusion 24c is formed so as to project from a tip end portion of the rotating arm 24, and an engaging arm 25 is pivotally supported by a shaft 25a provided at a substantially central portion. The engagement arm 25 is always urged downward by gravity to be rotatable, but the engagement groove 25b notched at the tip end thereof is engageable with the engagement pin 23a. In the engaged state, the engaging arm 25 forms a substantially horizontal angle from the tangential direction of the uppermost portion of the turntable 22 toward the engaging pin 23a, as shown in FIG.

A contact plate 6d is erected and fixed on the upper end of the head 6 described above, and the contact plate 6d moves to the end position described later as the head 6 moves. At this time, it can freely contact the contact protrusion 24c of the rotating arm 24, and presses the rotating arm 24 in the direction of the turntable 22 for a predetermined distance.

Next, the operation of the above configuration will be described. The recorder described below records and prints on the recording paper 17 in correspondence with the signal value as the information of the input signal to be input. The recording form is such that input signals of a plurality of channels are taken in and printed and recorded every time a predetermined time elapses. At the time of this printing and recording, the dot mechanism 6 c inside the head 6 operates to cause the dot pin 6 b to project. Analog dots are recorded on the recording paper 17 in the color of the ink ribbon 14. In addition, the input signal can be digitally printed with a signal value as information.

When the head 6 moves in the width direction of the recording paper 17 to perform a predetermined recording and then returns to the 0-point side (reference position) of the recording paper 17 to detect the end, the operation of FIG. As shown in the figure, the contact plate 6d of the head 6 presses the contact protrusion 24c of the rotating arm 24. The rotating arm 24 is rotated about the support shaft 24a in the A direction, and the engaging groove 25b of the engaging arm 25 rotates the engaging pin 23a in the B direction by a predetermined amount.

At this time, the turntable 22 held at the predetermined position is rotated in the B direction by the positioning roller 26. However, in the middle of rotating the turntable 22 in the B direction by the predetermined amount, the position determining roller 26 is engaged. The urging force that the urging spring 26b of the positioning roller 26 has after riding on the engaging pin 23f (state of FIG. 4) acts as a force for further rotating the engaging pin 23f in the B direction.

As a result, as shown in FIG. 5, the positioning roller 26 holds the rotation angle while being positioned at the engaging pins 23e and 23f. In this state, the turntable 22 has been rotated in the B direction by an angle corresponding to one pitch of the two adjacent engaging pins 23, 23. A take-up shaft 21a is connected to the turntable 22 so that the ink ribbon 14 is taken up by a predetermined amount corresponding to the rotation angle B. At this time, the engaging arm 25 is urged downward only by gravity, so that the engaging groove 25b rides on the engaging pin 23j.

Subsequently, as shown in FIG. 6, when the head 6 moves again in the direction C for printing and recording, the return force of the spring member 24b causes the rotation arm 24 to rotate to the position shown in the figure and stop. After that, the contact plate 6d is separated from the contact protrusion 24c. At the same time, the engaging arm 25 is urged downward by gravity so that the engaging groove 25b engages with the engaging pin 23j.

As a result, the turntable 22 is rotated by a predetermined pitch each time the head 6 again reaches the winding mechanism 20 to detect the end, and the ink ribbon 14 can be wound by a predetermined amount. Then, because the head 6 detects the trailing edge, each time the recording paper 17 moves in the direction of the 0 point, the platen 16 is rotated by a predetermined angle and the recording paper 17 is fed by a predetermined amount according to the chart speed.

Further, in the above-described embodiment, the ribbon cassette 13 is provided with the winding mechanism 20, but in addition, a ribbon holder for sandwiching the ribbon cassette 13 is provided, and the ribbon cassette 13 is attached to and detached from the ribbon holder. It may be configured freely. FIG. 7 is a view showing a modified example in which the winding mechanism 20 is provided on the ribbon holder 30. As shown in the drawing, the end portions of the winding shaft 21aa provided on the ribbon holder 30 side and the end portion of the winding shaft 21ac provided on the ribbon cassette 13 side are respectively fitted with rotation preventing keys 21ab. , And the key groove 21ad are formed and fitted to each other, so that the rotary disk 22 and the winding shaft 21ac in the ribbon cassette 13 are connected to each other. Also in this modified example, it is possible to obtain the same operational effect as that of the above-described embodiment.

Next, FIG. 8 is a partially enlarged perspective view showing a second embodiment of the recorder of the present invention. In this figure, the ribbon cassette 13, the ink ribbon 14, and the take-up shaft 21a have the same configurations as in the above-described embodiment. The winding mechanism 40 includes one-way clutch gears 47a and 47b connected to the winding shaft 21a, a rotating arm 44 having a shaft 44a fixed to the one-way clutch gear 47a, and the rotating arm 44 always in the solid line position. And a spring member 44b for urging. A contact protrusion 44c is provided at the tip of the rotating arm 44, and the contact protrusion 44c is engageable with the contact plate 6d of the head 6.

Further, the tooth flanks of the one-way clutch gears 47 a and 47 b have a wave shape so that they rotate together only in the D direction in the figure, and in the opposite direction, only the clutch gear 47 a rotates and the clutch gear 47 b does not rotate. Is formed in. Therefore, when the head 6 moves to the side of the winding mechanism 40 for detecting the trailing end and the contact plate 6d contacts the contact protrusion 44c, the rotating arm 44 rotates in the direction of the dotted line in the figure and the one-way clutch gears 47a, 47b. Simultaneously rotates in the D direction, and the winding shaft 21a similarly rotates in the D direction to wind up the ink ribbon 14.

When the head 6 moves in the direction away from the winding mechanism 40, the rotating arm 44 returns to the solid line position in the figure by the spring member 44b, and at the same time, only the clutch gear 47a rotates in the same manner, and the clutch gear 47b, The winding shaft 21a does not rotate and the ink ribbon 14 is not wound in the opposite direction. As described above, also in this embodiment, the ink ribbon 14 can be wound by a predetermined amount each time the head 6 detects the end.

In addition, the present invention can be applied to a general-purpose wired printer in which the head 6 has a wired configuration and an ink ribbon is used to print and record characters, numbers, figures, etc. as information of an input signal on recording paper. It is needless to say that even in this case, it is possible to obtain the same operational effect as in the above embodiment.

[0026]

[Effect of device]

 According to the recorder of the present invention, since the winding mechanism is configured to wind the ink ribbon by using the moving force of the head, the ink ribbon is wound by a predetermined amount each time the head moves to a predetermined position. You can As a result, there is no need to provide a special motor for winding the ink ribbon, and low power consumption can be achieved.

[Brief description of drawings]

FIG. 1 is a front view showing a first embodiment of a recorder according to the present invention.

FIG. 2 is a partially enlarged perspective view of FIG. 1 showing a winding mechanism.

FIG. 3 is a partially enlarged front view showing a winding mechanism.

FIG. 4 is an operation diagram of the winding mechanism.

FIG. 5 is an operation diagram of the winding mechanism.

FIG. 6 is an operation diagram of the winding mechanism.

FIG. 7 is a perspective view showing a modified example of the first embodiment.

FIG. 8 is a partially enlarged perspective view of a winding mechanism that is a second embodiment of the recorder according to the present invention.

FIG. 9 is a perspective view showing a conventional recorder.

[Explanation of symbols]

6 ... Head, 6d ... Contact plate, 6b ... Dot pin, 13 ...
Ribbon cassette, 14 ... Ink ribbon, 20, 40 ... Winding mechanism, 21a ... Winding shaft, 22 ... Rotating disk, 23 (2
3a to 23j) ... Engaging pin, 24 ... Rotating arm, 24b
... Spring member, 24c ... Contact protrusion, 25 ... Engaging arm, 2
5b ... Engaging groove, 26 ... Positioning roller, 26b ... Energizing spring.

Claims (1)

[Scope of utility model registration request] 1. A recorder for printing and recording information of an input signal by means of dot pins (6b) of a head (6) movable in the width direction of the recording paper (17), provided across the width direction of the recording paper. A ribbon cassette (13) for accommodating an ink ribbon (14) stretched to face the recording paper; a contact plate (6d) fixed to the head; and a moving direction of the head in the ribbon cassette. Winding mechanisms (20), (40) that are connected to the winding shaft (21a) of the ink ribbon provided at the end of the paper and rotate the winding shaft in one direction by engagement with the contact plate.
A recorder comprising: