JPH0640814U - Recorder - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent damage to the multicolor ink ribbon that is printed by dot printing on the recording paper on the platen roller with a wire hammer, improve printing quality, and reduce the size of the entire instrument. [Structure] A carriage 21 having a wire hammer 20 for performing a hitting operation is arranged so as to be movable along the width direction of a recording sheet. An endless type ink ribbon 40 having a plurality of color bands arranged side by side in the width direction is used as an ink ribbon cassette 4
1 is accommodated so as to be movable in a certain direction while being stretched across the effective recording width of the recording paper. A cassette holder 50 that detachably holds the ink ribbon cassette on the rotating end side.
Equipped with. The cassette holder is rotatably supported by a shaft support portion 51 located below the front end of the main body between the side plates 11 of the instrument main body chassis. Then, the ink ribbon is placed in a state in which the stretched portion is located between the wire hammer and the recording paper. This cassette holder includes a swing mechanism 52,
It is swung in the feeding direction of the recording paper by 53.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a recorder for performing dot recording on various recording data such as various measured values including temperature, humidity, etc., their measurement conditions, condition, etc. The present invention relates to a recorder suitable for use when performing multicolor dot recording using a multicolor ink ribbon having color bands and a wire hammer.

[0002]

[Prior art]

 Generally, in a recorder, various recording data such as various measurement data and associated data are recorded on a recording medium such as a belt-shaped recording paper called a chart. Then, in this type of recorder, the above-mentioned strip-shaped recording paper is divided into an unused portion and a recorded portion and stored in respective storage portions under the instrument main body, and paper is fed between these storage portions. On the recording paper by, for example, an ink ribbon and a wire hammer, which strikes the ribbon toward the outer periphery of the platen roller, as the recording means. It is known that the data record is printed as a dot record.

By the way, in the recording meter as described above, the storage parts for the recording paper are arranged in parallel below the main body of the instrument, and the recording paper is attached to the platen roller arranged above the measuring paper main body. In general, the platen roller is made to run, and an ink ribbon cassette is arranged on the upper end side of the platen roller to face the ink ribbon and a wire hammer is arranged so that the ink ribbon can be struck from the back side. It was target.

In such a conventional recorder, a schematic configuration in the vicinity of a printing mechanism portion for recording paper 1 is shown in FIG. Reference numeral 2 in the figure denotes a platen roller to which the recording paper 1 fed from an unused recording paper storage portion arranged in parallel below to a used recording paper storage portion (neither is shown) is attached. The ink ribbon cassette is arranged so that the traveling portion of the ink ribbon 4 faces the upper end side of the platen roller 2.

Reference numeral 5 denotes a wire hammer which is disposed so as to face the back side of the ink ribbon 4 in the ink ribbon running portion of the ink ribbon cassette 3 and which is struck toward the outer peripheral portion of the platen roller 2. The ink of the ribbon 4 is printed on the recording paper. In the figure, 6 is a carriage for holding the wire hammer 5 and moving it in the width direction of the recording paper 1 to perform spot recording at a predetermined position, and 7 is an armature for operating the wire hammer 5 in the vertical direction. Is.

Reference numeral 8 in the drawing denotes a shaft supporting portion for rotatably supporting the ink ribbon cassette 3, and when the ink ribbon 4 is of a multicolor type, the relative position with respect to the wire hammer 5 is displaced. It is used to rotate the recording sheet 1 on the platen roller 2 and to rotate it to the retracted position when checking the printing state on the recording sheet 1. Further, reference numeral 9 in the figure denotes a display device for displaying various information, which is arranged at the upper end of the front surface of the main body of the recorder.

In the recording device having such a structure, the wire hammer 5 is made to face the recording paper 1 by the carriage 6 at a predetermined position at the printing position of the upper end of the platen roller 2, and the ink ribbon cassette 3 is rotated. By printing the ink ribbon 4 between the wire hammer 5 and the recording paper 1 and operating the wire hammer 5 to make a dot, ink can be printed.

[0008]

[Problems to be solved by the device]

 By the way, in the conventional structure as described above, when the ink ribbon cassette 3 is pivotally supported rotatably so as to face the printing position on the upper end side of the platen roller 2 between the side plates of the instrument body, the platen roller 3 is placed below the ink ribbon cassette 3. 2. Further, since it is necessary to provide a recording paper storage portion (not shown) underneath it, the shaft support portion 8 of the ink ribbon cassette 3 is arranged at the upper end of the instrument main body where the cassette 3 is arranged, as is apparent from FIG. It was common to install it in a section.

However, with such a configuration, it is not possible to obtain a large radius of rotation from the shaft supporting portion 4 of the ink ribbon cassette 3 to the ink ribbon running portion facing the outer peripheral portion of the platen roller 2. Was occurring.

That is, in the above-described recorder, it is general to use, as the ink ribbon 4, a multicolor type in which color bands of a plurality of colors are formed side by side in the width direction. In particular, the width of each color band in such a multicolor ink ribbon 4 is at a minimum of 2 mm, and for example, in the case of 6 color ink ribbons 4, the ribbon width is 12 mm.

Then, in the multicolor ink ribbon 4 having such a wide ribbon width, the rotation angle of the ink ribbon cassette 3 at the time of color switching becomes considerably large in inverse proportion to the rotation radius a.

Therefore, in order to switch the color of the multicolor ink ribbon 4 as described above, when the ink ribbon cassette 3 having a small radius of rotation a is rotated with respect to the wire hammer 5 as shown in FIG. Therefore, the cassette 3 swings greatly from the state shown by the broken line in the figure, whereby the ink ribbon 4 on the cassette 3 side changes from the state orthogonal to the dot hammering direction of the wire hammer 5 to the inclined state. . Then, since the wire hammer 5 hits the ink ribbon 4 which is inclined as described above, it is inevitable that the ink ribbon 4 is damaged.

Similarly, the required gap between the wire hammer 5 and the platen roller 2 becomes larger as the turning radius a of the ink ribbon cassette 3 becomes smaller. This can be easily understood from the fact that the rotational locus at the tip of the ink ribbon cassette 3 shown by the imaginary line in FIG. 4 is displaced as shown by x in the figure.

Since the gap of the wire hammer 5 with respect to the outer peripheral portion of the platen roller 2 cannot be so large in view of printing characteristics, conventionally, the printing position is set to the upper end of the platen roller 2. And the platen roller 2, the wire hammer 5, and the ink ribbon 4 are arranged so that their relative positions are substantially vertical. However, even with such a configuration, the rotation angle of the cassette 3 is large depending on the size of the turning radius a of the cassette 3 from the shaft supporting portion 8 and the ribbon width of the multicolor ink ribbon 4, and thus the gap 3 However, there was a problem in that the printing characteristics could not be kept proper. In addition, when the rotation angle of the cassette 3 is large as described above, it is necessary to secure a space for disposing the cassette 3, which leads to an increase in size of the entire instrument.

Further, in such a conventional structure, in response to the desire to see the state immediately after printing of the printing spot on the recording paper 1 on the platen roller 2 described above, for example, Japanese Utility Model Publication No. 4-16909, As shown in Japanese Utility Model Publication No. 4-16910, the ink ribbon cassette 3 is further retracted and rotated further than the color switching operation described above, as shown by the solid line in FIG. A structure is known in which the location can be confirmed from the outside.

However, realistically, in the recorder, as shown by the phantom line in FIG. 4, each type of information display on the recorder is made close to the front side of the ink ribbon cassette 4 at the upper end side of the platen roller 2. An indicator 9 for performing the operation, a front door (not shown), etc. are provided, and as shown by the solid line in the figure, the printing position P at the upper end of the platen roller 2 can be seen from diagonally above. In reality, it is not possible to take such measures, and it is necessary to take some measures against such points.

Particularly, on the outer peripheral surface of the platen roller 2 as described above, the print position most visible when viewed from the front side is tilted to the left side in FIG. 4 by an angle θ with respect to the upper end side position P of the platen roller 2. The position Q is closer to the front. Therefore, if the wire hammer 5 is arranged so as to be inclined by the angle θ and the dot is applied from that position, the state immediately after printing can be easily seen. The angle θ may be 15 to 20 ° or more.

However, in order to have such a configuration, it is necessary to change the arrangement position and the rotation operation range of the cassette 3 having the ink ribbon 4 as well as the wire hammer 5, but as described above, in particular, the recording is performed. In the total, since the display 9 and the like are present on the front side, it is difficult to secure a space for disposing the ink ribbon cassette 3, which is a problem in practical use, and such a point must be taken into consideration.

The present invention has been made in view of the above circumstances, and when performing multicolor dot recording on a recording paper using a recording unit including a multicolor ink ribbon and a wire hammer for dot-printing, It is possible to prevent the problem of ink ribbon damage, which has been a problem, to make it easier to see the printing position from the outside, etc. Furthermore, the number of recording colors does not change, and the recorder can be downsized as a whole. The purpose is to get.

[0020]

[Means for Solving the Problems]

 In order to meet such a demand, the recorder according to the present invention has a carriage having a wire hammer for performing a dot-printing operation and arranged so as to be movable along the width direction of the recording paper, and a color band of plural colors. The endless type ink ribbons, which are formed side by side in the same direction, are stored so that they can move in one direction while being stretched across the effective recording width of the recording paper, and between the side plate of the instrument chassis. Is a cassette that is rotatably supported at the lower position of the front end of the main body, and the ink ribbon cassette is detachably installed with the stretched part of the ink ribbon located between the wire hammer and the recording paper. The holder and a swing mechanism for swinging the cassette holder in the recording paper feeding direction are provided.

[0021]

According to the present invention, the turning radius from the shaft supporting portion up to the portion facing the platen roller in the ink ribbon cassette having the multi-color ink ribbon which is rotated relative to the wire hammer is set to the shaft supporting portion. By installing the multicolor ink ribbon on the lower side of the front end of the main body that faces the instrument chassis via the platen roller, the multicolor ink ribbon can be rotated at a small rotation angle when the cassette is rotated for color switching. The required gap between the wire hammer and the platen roller is the minimum required.

[0022]

【Example】

 1 to 3 show an embodiment of a recorder according to the present invention. In these drawings, first, a schematic configuration of a recorder 10 suitable for applying the present invention will be briefly described below. To do.

That is, in the figure, 11 and 11 are both side plates that are the instrument body chassis of the recorder 10, and 12 is a door made of a transparent plate or the like that covers the front opening of the recorder (shown in phantom in FIG. 1 only). ), The door 12 is arranged on the front surface of the instrument main body to display various kinds of information, and a recorded portion of a band-shaped recording paper (not shown) which is a folding chart, and an unused portion. The recording paper storage portion 14 for storing the portion can be viewed from the front of the recorder 10. In FIG. 1, reference numeral 14a denotes an unused recording paper storage portion, and 14b denotes a recorded recording paper storage portion.

Reference numeral 20 is a wire hammer as a recording means arranged between the instrument main body chassis 11 and 11 on the rear side of the display device 13 that constitutes various necessary information displays and operation parts in the recorder 1, and 21 is the instrument main body chassis. A carriage that is movably arranged along a carriage guide shaft 22 that is stretched between 11 and 11 and that moves the wire hammer 20 along the width direction of the recording paper. The carriage 21 is configured to be moved by rotation transmission by a rotation transmission system 25 from a carriage driving motor shown by 24 in FIG.

A platen roller 30 is rotatably disposed below the wire hammer 20 between the instrument body chassis 11 and 11 and above the recording paper storage portion 14. The recording paper from the recording paper accommodating portion 14 is attached to the recording paper, and is printed and recorded by the dot of the wire hammer 20.

Reference numeral 40 denotes an endless type ink ribbon which constitutes recording means together with the above-mentioned wire hammer 20. The ink ribbon 40 is a multicolor type in which color bands of a plurality of colors are formed side by side in the width direction. As is clear from FIG. 2, the ink ribbon 40 is housed in a rectangular ink ribbon housing portion 42 that constitutes the ink ribbon cassette 41, and projects from both ends of the housing portion 42. The formed protruding portions 43 and 44 are configured to be movable in a fixed direction while being stretched from one tip portion to the other tip portion.

Here, the ink ribbon cassette 41 is provided with a case having a substantially U-shaped cross section, which includes the above-described ink ribbon storage portion 42 and the protruding portions 43 and 44 on both sides, and the tips of the protruding portions 43 and 44 are provided. Guide rollers 43a and 44a for causing the ink ribbon 40 to travel are disposed at the ink ribbon entry / exit portions of the section. In FIG. 3, reference numeral 47 is a ribbon feeding motor disposed on the instrument body chassis side, and 48 is a rotation transmission system thereof, by which the ink ribbons 40 in the cassette 41 are sequentially run.

As is apparent from FIG. 2, the ink ribbon 40 has a portion, which is stretched between the projecting portions 43 and 44 of the cassette 41, between the recording paper on the platen roller 30 and the wire hammer 20. Ink printing is performed on the recording paper by facing the gap and by the wire hammer 20 being struck at a predetermined position.

The structure of each part of the recorder 10 described above is well known in the art, and a detailed description thereof will be omitted.

Now, according to the present invention, as shown in FIGS. 1 to 3, in the recorder 10 having the above-described structure, the ink ribbon cassette is movably accommodated in a stretched state. The cassette holder 50, which is detachably held on the rotating end portion 50a in a state where the stretched portion in 41 is positioned between the wire hammer 20 and the recording paper on the platen roller 30, is attached to the side plate 11 of the instrument body chassis. 11. A cassette swinging motor 52 as a swinging mechanism that swingably supports the cassette holder 51 in the lower position of the front end of the main body by a shaft supporting portion 51 and swings the cassette holder 51 in the recording paper feeding direction, and its rotation. And a transmission system 53.

Incidentally, reference numerals 54 and 55 in the drawing are swing arm portions for pivotally supporting the cassette holder 50 on the shaft support portions 51 and 51 at the lower position of the front end portion of the instrument body.

According to such a configuration, the rotation from the shaft support portion 51 up to the portion facing the platen roller 30 in the ink ribbon cassette 41 having the multicolor ink ribbon 40 that is rotated relative to the wire hammer 20. The radius c is made longer than in the conventional case by providing the shaft support portion 51 at the lower position of the front end portion of the main body which faces the platen roller 30 in the instrument main body chassis. The rotation angle when the cassette 41 is rotated by the cassette holder 50 can be made smaller than in the conventional case, and the required gap between the wire hammer 20 and the platen roller 30 can be maintained at the necessary minimum amount. .

Therefore, in such a configuration, the rotation from the shaft support portion 51 to the portion facing the platen roller 30 in the ink ribbon cassette 41 having the multicolor ink ribbon 40 that is rotated relative to the wire hammer 20. The radius c is lengthened by arranging the shaft support 51 at the lower position of the front end of the main body facing the platen roller 30 in the instrument main body chassis, and rotating the cassette 41 for color switching of the multicolor ink ribbon 40. Since the rotation angle when the wire hammer 20 is moved can be reduced and the necessary gap between the wire hammer 20 and the platen roller 30 can be maintained at a necessary minimum amount, the ink can be used in the ink jet direction of the wire hammer 20 as in the conventional case. If the ribbons 40 face each other in a tilted posture, the ink ribbons 40 may be damaged or the gap may become large. It is possible to eliminate problems such as deterioration of printing characteristics. Further, in such a configuration, since the rotation angle of the cassette 41 can be made smaller than in the conventional case, the space for disposing the cassette 41 may be small and the miniaturization of the entire instrument can be achieved.

Further, the printing position on the outer peripheral portion of the platen roller 30 may be shifted from the upper end portion to a portion near the front end of the roller 30 so that the rotation angle is small and the gap between the wire hammer 20 and the platen roller 30 is small. Since it is also small, it is relatively easy to perform, which makes it easy to see the printing position, and the state immediately after printing can be checked easily and surely. This holds the ink ribbon cassette 41 on the rotating end portion 50a of the cassette holder 50, which is separated from the shaft support 51, and enables the color switching of the multicolor ink ribbon 40 even if the rotating angle is small. It can also be easily understood because the gap between the wire hammer 20 and the platen roller 30 can be reduced. Further, by shifting the printing position toward the front end of the roller 30 in this way, it is possible to reduce the size of the entire recorder 10. This can be easily understood from the fact that the rotation angle of the ink ribbon cassette 41 is small and the inclination angle of the cassette 41 may be small, so that the disposing space may be small.

Here, in order to employ such a configuration and exert its effect, the carriage 21 holding the wire hammer 20 is disposed so as to be inclined forward as shown in FIG. Good to do. In particular, if this is done, the rotational movement angle of the ink ribbon cassette 41 becomes smaller, and the required dimension between the platen roller 30 and the wire hammer 20 can be made smaller by placing the wire hammer 20 in the forward tilt position, which is a disadvantage. It is possible to change the position of the wire hammer 20 in the forward tilted position and the printing position to a position on the platen roller 30 which is easy to see, etc.

However, it is needless to say that the present invention is not limited to such a structure, and even when the printing position by the wire hammer 20 is present on the upper end side of the platen roller 30, the required action and effect can be obtained.

It should be easily understood that the present invention is not limited to the structure of the embodiment described above, and various modifications and changes can be made to the shape and structure of each part constituting the recorder.

For example, in the recorder 10 of the above-described embodiment, in the ink ribbon cassette 41 held by the cassette holder 50, the ink ribbon 40 is arranged at the ink ribbon in / out portions of the protrusions 43 and 44 of the cassette 41. The guide rollers 43a and 44a are provided, and the guide rollers 43a and 44a are inclined with respect to both the traveling surface in the protrusions 43 and 44 and the external traveling surface between the protrusions 43 and 44. The external running surface of the ink ribbon 40 is inclined with respect to the surface of the case of the cassette 41.

By doing so, it becomes possible to shift the printing position on the outer peripheral portion of the platen roller 30 to a position closer to the front end of the roller 30 from the upper end portion, so that the printing position becomes easier to see and immediately after printing. The state can be confirmed easily and surely, and as described above, the entire recorder 10 can be downsized.

Further, according to the present invention, as the ink ribbon 40, a multicolor type is exemplified, and the function and effect when it is used are described, but the invention is not limited to this, and an ink ribbon of a single color type is provided. Even if it is applied to a cassette, it has advantages such as a small rotation angle and an appropriate gap. In particular, such an advantage is significant in that it is not necessary to upsize the entire instrument main body when retracting the cassette in order to confirm the print position.

[0041]

[Effect of device]

 As described above, according to the recorder of the present invention, the ink ribbon cassette that makes the multicolor ink ribbon struck by the wire hammer rotatably move with respect to the platen roller is provided below the platen roller. Since the ink ribbon cassette is rotatably supported at the lower position of the front end portion of the ink ribbon cassette, a large radius of rotation is obtained from the shaft support portion of the ink ribbon cassette, and the swinging amount of this cassette is reduced by the swinging mechanism. It has various practically excellent effects listed below.

In the ink ribbon cassette having a multicolor ink ribbon that is rotated relative to the wire hammer, the rotation half diameter from the shaft support portion to the portion facing the platen roller in the ink ribbon cassette It is provided at the lower position of the front end of the main body, which is opposed via the platen roller, to make it longer, and to reduce the rotation angle when the cassette is rotated to change the color of the multicolor ink ribbon. Since the required gap between them can be maintained to the minimum required amount, the ink ribbon may be damaged or the gap may be large due to the ink ribbon facing diagonally to the hitting direction of the wire hammer as in the past. As a result, problems such as poor printing characteristics can be eliminated, and the smaller the rotation angle, the smaller the installation space. Therefore, the entire instrument can be downsized.

It is possible to shift the printing position on the outer peripheral portion of the platen roller from the upper end portion to the portion near the front end of the roller, which makes it easier to see the printing position and to easily and reliably confirm the state immediately after printing. It is also possible to reduce the size of the recorder by reducing the tilt angle of the cassette.

In particular, the rotation operation angle of the ink ribbon cassette is reduced, and the required dimension between the platen roller and the wire hammer can be reduced, which is allocated to the disadvantageous gap by arranging the wire hammer in the forward tilt position. It is possible to change the wire hammer in the forward tilted position and change the printing position to a position that is easy to see on the platen roller.

[Brief description of drawings]

FIG. 1 is a schematic side sectional view showing an embodiment of a recorder according to the present invention.

FIG. 2 is a schematic front view of FIG.

FIG. 3 is a schematic plan view of FIG.

FIG. 4 is a schematic configuration diagram for explaining a problem in a conventional recorder.

[Explanation of symbols]

 10 Recorder 11 Side Plates on Both Sides of Instrument Main Chassis 13 Display 14 Recording Paper Storage 20 Wire Hammer 21 Carriage 30 Platen Roller 40 Multicolor Ink Ribbon 41 Ink Ribbon Cassette 42 Ink Ribbon Storage 43 43 Projection 43a Guide Roller 44 Projection 44a Guide Roller 50 Cassette Holder 51 Shaft Support 52 Cassette Swing Motor (Swing Mechanism) 53 Rotation Transmission System for Swing Mechanism 54 Swing Arm 55 Swing Arm

Claims (1)

[Scope of utility model registration request] 1. A carriage having a wire hammer for performing a dot-stripping operation and arranged so as to be movable along the width direction of a recording sheet, and an endless type ink ribbon in which color bands of a plurality of colors are formed side by side in the width direction. It is rotatably supported at the lower position of the front end of the main body between the ink ribbon cassette, which is movably stored in a certain direction while being stretched to face the effective recording width of the recording paper, and the side plate of the instrument main body chassis. At the same time, a cassette holder is provided to which the ink ribbon cassette is detachably attached in a state where the ink ribbon stretched portion is located between the wire hammer and the recording paper on the side of the rotating end, and the cassette holder is provided in the recording paper feeding direction. A recorder having a swinging mechanism for swinging the recorder.