TW501987B - Print head for dot printer, dot printer comprising it, and method for manufacturing print head for dot printer - Google Patents

Abstract

This invention relates to a print head for dot printer comprises a resiliently deformable leaf spring provided with a pin member at the forward end part thereof, and a shifting device for shifting the leaf spring instantaneously in a specified direction wherein printing is performed dot by dot by impacting a sheet carriable in the specified direction with the pin member through an ink supply member. The pin member comprises a holder bonded to the leaf spring, and a ball striking unit held on the holder to touch the ink ribbon.

Description

B7 V. Description of the invention (i ^ [Technical field to which the invention belongs] (Please read the precautions on the back before filling this page) The present invention relates to a printing head for a dot matrix printer and a dot matrix with a printing head And printing method for printing heads of dot-matrix printers and dot-matrix printers. [Background of the Invention] So far, mechanical impact on paper has been achieved by spaced ribbons. Type printers are quite popular. Impact printers have adopted: typers who type into the movable type and dot matrix types that display characters or graphics as a collection of dots (pixels). Staff Consumption of the Intellectual Property Bureau of the Ministry of Economic Affairs Figure 11 printed by the cooperative shows the print head of the dot matrix impact printer, that is, the schematic diagram of the print head of the dot matrix printer and its immediate vicinity. In this printer, the interval ribbon 3 and The printing head 2 is provided opposite the supported platen roller 1 which is in a rotatable state. The ribbon 3 is supplied by the ribbon cassette 4. The paper C can be inserted between the platen roller 丨 and the ribbon 3 The paper c can be rotated by the platen roller 1 in Fig. 11 Up and down direction (hereinafter referred to as "Y direction"). The print head 2 and the ribbon cassette 4 can be moved in a direction perpendicular to the paper conveying direction by a step motor (not shown) (hereinafter referred to as It is “direction again”). The printing head 2 is shown in FIG. 12 and has a plurality of needle pins 50 for punching the paper c and the ribbon 3, and each needle pin 50 is fixed to be elastically deformable. The plate springs 6. The pin 50 is made of rod-shaped superhard wire, and the diameter is about 0.2mm and the length is about 3mm. The base end of the pin 50 is opposite to the plate spring 6. It is fixed by coating with silver solder, etc. As shown in Fig. 13, the leaf spring 6 is made of one of the flat-shaped base portions 8. The paper size is in accordance with the Chinese National Standard (CNS) A4 (210 X 297 mm)- 4- item 987

The end surface 8a is extended and is arranged side by side in the x direction. The two adjacent needle pins 50 of the plurality of needle pins 50 provided on the leaf spring 6 are arranged at intervals in the γ direction in accordance with the printing resolution. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs

As shown in Fig. 12, the base portion 8 is a first yoke supporter. The first yoke 11 is a person who installs the second yoke 12 by a bolt, and the second yoke 12 is a person who can support the third yoke 13 by a permanent magnet 24. A plurality of coils 14 corresponding to the leaf springs 6 are wound on the third yoke 13. In addition, the third yoke 13 is arranged such that one end 13a thereof is opposed to the leaf spring 6. In addition, 28 series spools for winding the coil 14, 30 printed circuit boards for energizing the coil 14, 30 series connectors, and 33 series heat sinks are shown in the figure. According to the above structure, the magnetic circuit will be formed in the permanent magnet 24, the second vehicle 12, the first yoke 11, the leaf spring 6, and the third yoke 13, and the leaf spring 6 is generally elastic and attracted by the attraction of the permanent magnet 24 It is in a state of being bent and in contact with one end 13a of the third vehicle 13, or in a state of being separated by a minute interval. In this state, once the current is selectively passed to the coil 14 in accordance with the control signal sent from the printed substrate 30, the attraction of the permanent magnet 24 acting on the leaf spring 6 corresponding to the selected coil 14 can be cancelled. . In this way, the plate jelly sauce 6 will be suddenly transferred to the platen i due to its elastic restoring force, and the pin 5 will punch the space ribbon 3 and punch the paper C. As a result, the ink of the impact portion of the ink ribbon 3 will adhere to the paper C and be printed. The two adjacent needle pins 50 are arranged in the γ direction as described above to be separated by a distance corresponding to the printing resolution. At this time, if the needle pin 50 is, for example, 12 needles, the printing head 2 moves unidirectionally in the X direction. In this case, printing can be performed on the paper c in a region of about 12 o'clock in the γ direction, thereby making printing more efficient. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm)

II IIIIII 1 · II (please read the precautions on the back before filling this page); line-. -5 · 501987 A7 B7 V. Description of the invention (In addition, the dot matrix printer mentioned above can be 〖60dpi (dot per inch) or 180dpi resolution. Generally, by moving the print head 2 in the χ direction, printing can be performed at the above-mentioned printing resolution. In addition, in the Y direction, because the pin 5 If the interval is set according to the dot resolution of the printing resolution, it is necessary to improve the accuracy of the position of setting the pin 50 to achieve the above-mentioned printing resolution. That is, the pin 50 must be accurate to the leaf spring 6 Although the conventional printing head 2 is provided with a pin 50 by using a fine ultra-hard metal wire of a predetermined length to braze the plate spring 6 at a slightly right angle, it is difficult to use the method for the plate spring 6 to Pins 50 are installed with high accuracy. This method has problems in terms of operation in both the χ and γ directions in improving the accuracy of the women's position of each pin 50, and a large amount of work is required for this purpose Time, and, generally, s, above the above The price of metal wires is so high that the conventional pin 50 has become one of the reasons for the increase in the cost of parts. [Disclosure of the Invention] The present invention was developed based on the above problems, and its purpose is to provide a board with better accuracy. Print head for dot-matrix printer with pin member for positioning by leaf spring. Another object is to provide dot-matrix printer and dot-matrix printer having the print head for dot-matrix printer. A method for manufacturing a machine print head. In order to solve the above-mentioned problems, the present invention adopts the following technical methods. The print head for a dot matrix printer provided by the first aspect of the present invention has a pin member provided at a front end portion. An elastically deformable leaf spring and a transfer device for instantaneously transferring the leaf spring in a predetermined direction, and the paper size is based on the national standard (CNS) A4 (21G x 297 public love) of this paper. Please first Read. Note on the back page

I I I Order Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs -6_ 501987 B7

# Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, the pin member can be printed in dot units by punching the pin member through the ink supply member to the paper that can be transported in the predetermined transport direction; and the pin member is made of A holding table fixed to the plate spring and a ball punching body held on the holding table and contacting the ink supply member. A concave portion is preferably formed on the front end surface of the holding table, and a spherical punching body is fixed on the inner surface of the concave portion. It is more preferable to form the inner surface of the recessed portion into a tapered shape such as a conical shape. According to the above structure, since the pin member for punching the paper and the ribbon is composed of a ball and a holding table for holding the ball, the inner surface of the recess formed on the holding table is fixed with a spherical punching body. You can specify the position of the punching body used for punching paper. At this time, since the recessed portion can be formed at a suitable position with high accuracy on the front face of the holding table by a precision machining device or the like, a sphere fixed to the recessed portion can also be positioned with high accuracy. Therefore, the relative position of the ball to the leaf spring can be set to a desired position, and a dot can be formed at the correct position on the paper. According to a preferred embodiment of the present invention, it is known that the leaf springs are arranged side by side in a direction perpendicular to the conveying direction of the paper, and the recesses are staggered toward the paper conveying direction according to the dot pitch of the printing resolution. The length is formed on each leaf spring. According to the above-mentioned structure, since the concave portion to which the spherical punching body is fixed can be easily formed at an appropriate place, the concave portion can be formed on each leaf spring by staggering the concave portion by a predetermined length on the front surface of the holding table. Therefore, the spherical punching bodies fixed to the recessed portions can be arranged with a predetermined length shifted accordingly, and the spherical punching bodies can be punched toward the paper or the like in accordance with the dot pitch of the printing resolution. ------------- M i — c Please read the notes on the back before filling this page) • Line.

501987 Β7 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (The diameter of the spherical punch should be set to 0.3 ~ 0.4mm. The print head provided by the second aspect of the present invention is a dot matrix printing A printing head for a machine has an elastically deformable leaf spring provided with a pin member at a front end portion and a transfer device for instantaneously transferring the leaf spring in a predetermined direction, and is constituted so that the pin member can be separated by ink. The supply member punches the paper that can be conveyed in a predetermined conveying direction and prints in dot units; and the pin member is a holding table that is fixed to the leaf spring and has a recess formed on the front end surface, and holds the holding member. The punching body formed on the recessed portion of the holding table; and the punching system has a form that cuts out a part of the spherical member. The inner surface of the recessed portion should be formed in a cone shape. According to the above structure, due to the formation on the holding table A punching body is fixed on the inner surface of the recessed portion, so the position of the punching body can be specified. Secondly, because the punching system uses a precision machining device, etc. It can be formed by cutting with the south precision, so the punching point for punching the paper 4 can be positioned with high accuracy. Therefore, the point 0 can be formed at the correct position on the paper. Also according to the preferred embodiment of the present invention, The leaf springs are arranged side by side in a direction perpendicular to the conveying direction of the paper, and the punching bodies have been partially cut off from the leaf springs to make the punching bodies and the The contact portion of the ink supply member is shifted in a predetermined length toward the conveyance direction of the paper according to the dot pitch of the printing resolution. With the above structure, the punch body can be cut away to form a contact portion with the ink supply member. As it can be staggered on each plate spring to meet the printing solution ------------ install ------- 丨 order -------- I (Please read the note on the back first (Fill in this page again)

-8 ^ 501987 A7 V. Description of the invention (the degree of dot pitch of the resolution, so that each punching body can be punched toward the paper with the dot pitch of the printing resolution. X, because the punching system uses a precision machining device It is made by directly cutting the spherical member, so the position accuracy of the impact point of the punching body can be further improved. The diameter of the spherical member before cutting out part of it should be set to 0.6 ~ 0.8mm. 〇 Provided by the third aspect of the present invention The dot-matrix printer has the printing head provided by the first aspect of the present invention, and the dot-matrix printing machine can obtain the effect of the printing head according to the first and second aspects of the present invention. The effect of the same is provided by the fourth aspect of the present invention is a method for manufacturing a printing head for a dot matrix printer, the printing head is provided with a pin member at the end of an elastically deformable leaf spring, and If the leaf spring is momentarily shifted in a predetermined direction, the pin member can be printed in dot units by punching the paper through the ink supply member. The production of the pin member includes the following procedures: The stage is installed after the front end of the plate spring, and a recess is formed at a specific position on the front end surface of the holding stage; and a spherical member is fixed to the recess formed on the front end surface of the holding stage. Since the recess can be formed after the holding table is mounted on the leaf spring 6, when the printing heads with different printing resolutions are produced, the same procedure can be used until the holding table is mounted on the leaf spring. In addition, since the recess can be formed with high precision, such as a precision machining device, there is no need to specifically maintain the mounting accuracy of the plate-to-plate spring. Therefore, the production operation can be performed efficiently. In addition, the paper size for the papermaking is applicable Guan Family Standard (CNS) A4 specification (21G X 297) -9- 501987 A7

When printing heads with different printing resolutions, the cost increases. u order parts, fabricated parts In addition, when manufacturing pin components, the method including the following procedures can also be used, that is, 'the holding table with a recess formed on the front end surface is installed at the end of the cymbal of the plate spring; the spherical member is fixed Focusing on the surface formed on the front surface of the holding table; cutting a part of the spherical member to form a punching body having a contact portion with the ink supply member. Alternatively, after the holding table is mounted on the front end of the plate spring, a ridge may be formed on the front end surface of the holding table instead of mounting the holding table having a recess on the front surface on the front end of the plate spring. According to the manufacturing method described above, since the work of cutting the spherical member can be performed after the holding table is mounted on the leaf spring, it can be performed in the same procedure until the holding table is installed, for example, when making print heads with different printing resolutions. Made on the leaf spring. Therefore, production work can be performed efficiently. Other features and advantages of the present invention can be more clearly understood with reference to the accompanying drawings through the following detailed description. [Brief description of the drawings] Fig. 1 is a diagram showing a schematic configuration of a print head for a dot matrix printer according to a first embodiment of the present invention. Fig. 2 is a diagram showing a leaf spring and a base portion, (a) is a plan view, (b) is a cross-sectional view in the direction of arrow B-B of (a), and Fig. 3 is a perspective view of a third yoke. Figure 4 shows the fixed size of the sphere relative to the recess of the holding table. The paper size applies the Chinese National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page) ^ —----- ^ -----—. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs -10- 501987

V. Description of the Invention (Printed sectional view of the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. Figure 5 shows the recessed portion of the holding table and the sphere fixed to it as shown in Figure 4 and the recessed portion of the holding table adjacent to it and The relative relationship of the spheres fixed on it. Fig. 6 is a cross-sectional view showing the mounting state of the holding table with respect to the plate jelly. Fig. 7 is a holding table with a recess formed on the front surface and the corresponding A perspective view of the fixed sphere. Fig. 8 is a cross-sectional view showing a part of the sphere and a holding table for holding the sphere in the printing head of the second embodiment of the present invention. Fig. 9 shows the formation on the front surface. A perspective view of a holding table with a recess and a sphere to be fixed to it. Figure 10 shows the relative relationship between the part of the sphere that has been cut as shown in Figure 9 and the sphere that has been cut adjacent to a part of the sphere. Figure 11 It is a schematic perspective view showing the printing head of a dot-matrix printer and its immediate vicinity. Figure 12 is a schematic structure of a printing head for a conventional dot-matrix printer. Figure 13 is a diagram showing a conventional plate cartridge and substrate. Ministry (A) is a plan view, (b) is a cross-sectional view in the direction of the bb arrow of (a). [Embodiments of the present invention] Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. This paper scale is applicable to the country of China Standard (CNS) A4 Specification (210 X 297 mm) Packing -------- Order --------- Line (Please read the precautions on the back before filling this page) 501987 Wisdom of the Ministry of Economic Affairs Printed by A7, Consumer Cooperative of the Property Bureau. V. Description of the Invention (< First Embodiment > The first figure is a schematic diagram of the print head of a dot-matrix printer in the first embodiment of the present invention and its immediate vicinity. As shown in Fig. Π, the dot matrix printer is the same as the conventional dot matrix printer, and the print head 2 is arranged opposite to the platen 1 which is supported and can rotate. The print head 2 A ribbon cassette 4 surrounding the print head 2 is provided nearby. The ribbon cassette 4 is configured to sequentially supply the ribbon 3 to the platen 1 side of the print head 2. Between the platen 丨 and the ribbon 3, Insert the paper C, and the paper C can be conveyed in the upper and lower directions (that is, the Y direction) by the rotation of the platen roller 丨. Also, the printing 2 and the ribbon cassette 4 constitute a person who can move back and forth in a direction substantially perpendicular to the conveying direction of the paper c (ie, the X direction) by a step motor (not shown). As shown in FIG. 1, the print head 2 It generally includes a plurality of pin members 5 for punching the paper C and the ribbon 3 in units of points, a plurality of leaf springs 6 to support the pin members 5, and instantaneous transfer of the leaf springs 6. The transfer mechanism 7. The leaf spring 6 is composed of a hard carbon tool steel material such as SK, and is extended by a first edge portion 8a of a slightly flat plate-like base portion 8 that can be elastically deformed as shown in FIG. 2. In this embodiment, twelve leaf springs 6 are provided, and each leaf spring 6 is disposed at an equal interval (such as a distance of about 4.445 mm) with respect to the base portion 8. The i-th edge portion 8 & of the base portion 8 is slightly inclined relative to the second edge portion 8d, and the length from the second edge portion 8d to the front end of each leaf spring 6 is sequentially different. Mounting holes 8b and 8e are formed in the base portion 8 respectively. As shown in Fig. 1, the transfer mechanism 7 includes a first yoke 11 for supporting the base portion 8 extending the leaf spring 6, and a second reference paper for supporting a permanent magnet. The Chinese paper standard (CNS) ) A4 size (210 X 297 mm) I ------------------- (Please read the notes on the back before filling this page) -12- 501987 A7 B7 Economy Printed by the Consumer Cooperative of the Ministry of Intellectual Property Bureau. 5. Description of the invention (12. The third ι3 (coil yoke) for magnetically acting on the leaf spring 6) and the third yoke 13 provided on the third yoke 13 Multiple coils 14. The first 11 is composed of a substantially flat magnetic body, and the conveying direction of the paper C, that is, the Y direction, is arranged in parallel. The first yoke is placed on the inner side of the print head. The surface is provided with a recessed portion 16, and the window portion 17 is formed adjacent to the recessed portion 16. The leaf springs 6 described above are arranged along the recessed portions 6 ′, so that a part of the pin member 5 can pass through the window portion. 17 and punch the ribbon 3. The first 11 is connected to the second yoke 12 with the base 8 by the bolt 18. The second yoke 12 is magnetically similar to the first yoke 1 丨The sexual body includes a mounting surface 20 extending along the surface of the first yoke 11, an inclined surface 21 extending from one end of the mounting surface 20 to the mounting surface 20, and one end of the self-inclining surface 21. The horizontal face 22 extending vertically in the face portion 20. The horizontal face 22 of the second vehicle 12 is provided with a third yoke 13 above the permanent magnet 24. The third yoke 13 is the same as the first yoke U and the second yoke 12 It is composed of a magnetic body and includes a flat bottom portion 26 as shown in FIG. 3 and a plurality of protrusions 27 corresponding to each leaf spring 6 and extending from one end surface 26a of the bottom portion 26 in a comb-tooth shape. The third yoke 13 is arranged so that the bottom of the bottom yoke 26 can contact the permanent magnet 24, and a part of the front end portion 27a of each protrusion 27 can be connected to the leaf spring 6. As shown in FIG. 1, each protrusion A coil 14 corresponding to each leaf spring 6 is wound around the coil 27 on the bobbin 28. Both ends of the coil 14 are electrically connected to a printed circuit board 30 forming a circuit for passing a current to the coil 14. The printed circuit board 3 〇The above is equipped with an external signal to send and receive external signals between the control device (not shown). Connector 3 丨. The heat sink 33 is mounted on the printed substrate 30 by the spacer 32. The heat sink 33 is used ----- I --- III--. I-II I-order -— II (Please read the note on the back? Matters before filling out this page) -13- 501987 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of Invention (η) to release the heat accumulated in the coil 14 A part of it is in contact with the coil 14 and is fixed to the coil 14 by an adhesive. It can be seen from the above structure that the magnetic circuit can be formed by the permanent magnet 24, the second yoke 12, the first U, the leaf spring 6, and the third yoke 13. That is, the plate spring 6 is elastically bent toward the third vehicle 13 under the attraction of the permanent magnet 24 in a normal state. The back surface of the plate spring 6, that is, the surface on which the pin member 5 is not provided, is the same as the protrusion 27. A part of the tip portion 27a is in contact with or held at a predetermined interval (hereinafter, this state is referred to as a "reset state"). When a control signal is sent to the printed circuit board 30 from a control device (not shown), the printed circuit board 30 selectively conducts current to any of the coils 14. Thereby, the attractive force of the magnet acting on the leaf spring 6 corresponding to the coil 14 through which the current flows can be canceled. As a result, the reset state of the leaf spring 6 will be released, and by its elastic restoring force, it will be instantly transferred to the paper C, and the paper c and the ribbon 3 will be punched. Thereby, the ink corresponding to the impact position on the ribbon 3 will be attached to the paper sheet €, and the dot matrix printing of the paper sheet C will be performed. Next, the pin member 5 in the characteristic part of this embodiment will be described. As shown in FIG. 4, the pin member 5 provided on the front end portion 6 a of the leaf spring 6 is held by the holding table 36 mounted on the leaf spring 6, and is held in contact with the ribbon 3 by the holding table 36. Fighting body composed of 3 to 5. Moreover, the punching bodies 35 in this embodiment are spherical. The holding table 36 is made of a hard carbon tool steel material such as a sk material, and has a slightly conical shape with a cut end portion similar to the leaf spring 6. The base end of the holding table 36 is fixed to the leaf spring 6 and extends in a direction substantially perpendicular to the leaf spring 6. A slightly conical recessed portion 37 is formed on the front end surface 36 a of the holding table 36. Concave (please read the precautions on the back before filling this page) I. n—nnnnnn °° J * drive. 14-501987 V. Description of the invention (12) The part 37 is a tapered inner surface 37a for a predetermined size. Spherical punching body 35¼ is easy to fix, and its opening angle a is set to 90 ~ 120. Left and right. The recess 37 is formed with high accuracy using a precision machining device, for example. The spherical impact body 35 is an inexpensive super-hard spherical body composed of a material such as tungsten carbide 94% and cobalt 6%, and the diameter is about 0.3 to 0.4 mm, and a diameter of about 0.4 mm is preferably used. The concave portion 37 of the above-mentioned holding table 36 is a portion in which a spherical punching body 35 is fixed to a part of its inner surface 37a. The spherical punch 35 is a top 35a protruding from the recess 37 and fixed to the inner surface 37a, so that the top 35a of the spherical punch 35 forms a punch of the pin member 5 pair of paper C and the like. As described above, the pin member 5 for punching the paper c and the ribbon 3 is formed by the ball punching body 35 and the holding table 36 for holding the ball punching body 35, and is formed on the holding table 36. The spherical punching body 35 is fixed to the inner surface 378 of the upper recess 37, so the position of the spherical punching body 35 for punching the ribbon 3 and the like can be specified. At this time, since the end face 3 or more before the holding table 36 can be formed at a suitable position with high accuracy by a precision machining device such as a cutting machine, the spherical punch 35 can be positioned with high accuracy. Therefore, the relative position of the spherical punching body 35 with respect to the leaf spring 6 can be set at a desired position, and a dot can be formed at a correct position on the paper C. As shown in Fig. 5, the recessed portion 37 formed at the front end 3 or more of the holding table 36 is formed by shifting the recessed portion 37 of the adjacent holding table 36 by a predetermined length position in the γ direction. The predetermined length corresponds to the dot pitch P of the printing resolution in the γ direction. Therefore, the paper 35 of the top 35 & of the spherical punching body 35 is applicable to China_Standard (CNS) A4 '格 ⑵〇χ 297 public hair ·· M -------- ^ ------ ---. Μ (Please read the notes on the back before filling out this page) -15- 501987

V. Description of the invention (13) Set the point 35a of the adjacent spherical punching body 35 to be offset from the point distance P by about γ. (Please read the precautions on the back before filling this page.) For example, if you want to use the print head 2 with a printing resolution of 160dpi, the dot pitch P can be obtained from 25.4mm (l inch) / 160. .1588mm or so. Therefore, in order to set the printing resolution to 1 gQdpi, the same shape of the concave portion 37 can be moved to the gamma direction by about 0.1588 mm to the front end surface 36a of the adjacent holding table 36, and each concave portion 37 can be installed with the same shape.球 冲 打 体 35。 Spherical punching body 35. As described above, since the concave portion 37 can be formed on the flat front end surface 36a of the holding table 36 by a precision machining device such as a cutting machine, it can be formed at a suitable place with high accuracy. Therefore, the front end surface 36a of each holding table 36 is moved with local accuracy to form a concave portion 37, and the top portion 35a of each spherical punching body 35 disposed on the concave portion 37 is moved to each leaf spring 6. Its length. As a result, when the dot-matrix printer is in operation, each of the ball punching bodies 35 can print the paper C with a high pitch accuracy and the like, thereby improving the printing quality. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs In addition, a semi-spherical recess having a diameter substantially the same as the diameter of the spherical punch 35 may be formed on the front end surface 36a of the holding table 36 instead of the above-mentioned recess 37 formed thereon, or It is also possible to form a slightly rectangular concave portion having one side which is substantially the same as that of the straight punch 35. As described above, the shape of the recessed portion 37 provided on the front end surface 36a of the holding table 36 is not particularly limited as long as the shape can hold the spherical striking body 35 and protrude the top portion 35a of the spherical striking body 35. Next, a method of mounting the pin member 5 to the leaf spring 6 and a method of forming the recess 37 will be described. First, keep the front surface 36a unprocessed and maintain the paper size of the paper to fit the national standard of the country (CNS) A4 (21Q χ 297 public love) ------ 501987 A7 B7 # Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs and Consumer Cooperatives Fifth, description of the invention (14) 36 Xinka is fixed on the front end 6a of each leaf spring 6. Specifically, as shown in FIG. 6, the mounting portion 6 b formed in the base end of the holding base 36 is inserted into the mounting portion 6 b formed in the base end of the holding base 36 to the end portion 6 & The card mounting portion 36b is fixed to the leaf spring 6 at the front end of the card mounting portion 36b. Next, a recess 37 is formed on the end surface 36a before the holding table 36 by a precision machining device such as a cutting machine. At this time, the concave portion 37 is formed by the top 35a of the spherical punching body 35 fixed to it and the top 35a of the adjacent spherical punching body 35 staggered in the Y direction by a distance p corresponding to the printing resolution. By. Specifically, a 'reference point Q (refer to FIG. 2) is a center point such as the mounting hole 8b set on the base portion §. Based on the reference point Q, the formation position of the recessed portion 37 such as the front end surface 36a of the retainer 36 of the leaf spring 6 at the leftmost end can be set, and the recessed portion 37 can be formed at the formation position thus set. Then, the position where the concave portion 37 of the leaf spring 6 next to the leaf spring 6 is formed is set. Specifically, as described above, when the printing resolution is 丨 60 dpi, the formation position of each concave portion 37 is set to be approximately 0 with the formation position of the concave portion 37 of the adjacent leaf spring 6 in the γ direction. The difference of 1588mm. Secondly, a recess 37 is formed in the front end surface 36a of the adjacent holding table 36 correspondingly. In this way, the recessed portion 37 can be formed by shifting the formation position until the leaf spring 6 at the right end. In addition, the positions where the recesses 37 are formed in the X direction are aligned with the pitches at which the leaf springs 6 are formed, and the recesses 37 are formed at intervals of, for example, 4 445 mm. Thereafter, as shown in FIG. 7, the spherical punching bodies 35 are respectively placed on the recesses 37 of each holding table 36, and the method such as resistance welding is used to apply the spherical paper size to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -------------- Installation ------- Order --------- Thread ί Please read the note on the back first Huh? (Fill in this page again) -17- 501987 A7

5. Description of the invention (15) The punching body 35 is fixed on each holding table 36. (Please read the precautions on the back of the page before filling in this page.) In this way, if the concave portion 37 is moved in the Y direction on each holding table 36, the spherical punch 35 and the printing resolution can be met. The point distance P is uniformly configured. Therefore, once the printing head 2 is moved unidirectionally in the X direction by the drive of a stepping motor (not shown), printing at about 12 o'clock can be performed in the ¥ direction. As described above, in this embodiment, since the recessed portion 37 for fixing the spherical punching body 35 can be easily formed at an appropriate position by a precision machining device, it can be positioned at the front end surface 36 a of the adjacent holding table 36. The concave portion 37 is formed so as to be highly accurately moved. Therefore, when the print head 2 is made with a different printing resolution, for example, it can be easily corresponding to the printing resolution ^ For example, when the printing resolution is used at 180 dpi, the dot pitch can be 25.4 mm (l inch) / 180, which is about 0.1411 mm. On the other hand, the top 35a of each spherical punching body 35 can be offset from the top 35a of the adjacent spherical punching body 35 by about 0.1411 mm to form each recess 37. It is printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. Since the formation of the recess 37 can be performed after the holding table 36 is mounted on the plate spring 6, even if the printing resolution is different, the same procedure can be used to maintain the The stage 36 is manufactured until it is mounted on the leaf spring 6. In addition, the mounting accuracy of the holder 36 to the leaf spring 6 does not require special requirements. Therefore, production work can be performed efficiently. In addition, even if the printing resolutions are different, parts can be shared to suppress an increase in part costs. In addition, in FIG. 2, since each leaf spring 6 extends from the inclined first edge portion 8 a of the base portion 8, although the position of the front end surface 36 a in the Y direction is actually staggered, However, when using the Y-direction length of the front surface 36a, the paper size is applicable to the Chinese National Standard (CNS) A4 specification (21 × χ 297 mm) -18- 501987 ------ I -___ B7 V. Description of the invention (16) When the holders 36 are allowed to stagger in the Y direction, the first edge portion 8a of the base portion 8 may be formed without tilting the second edge portion 8d. In this way, the leaf spring 6 can be easily formed as a single body. < Second Embodiment > Fig. 8 is a sectional view showing a pin member 40 according to a second embodiment of the present invention. In the second embodiment, the pin member 40 includes a holding base 36 fixed to the leaf spring 6 and having a recessed portion 37 formed on the front end surface thereof, and an impact body 41 held on the recessed portion 37 of the holding base 36. The punching body 41 in this embodiment has a form in which a part of the sphere has been removed. Specifically, the punching body 41 is originally a sphere, and the peripheral surface 41a of the upper half is cut away, and the upper half is formed into a slightly mountainous shape having a curve. Next, the top portion 41b of the punching body 41 has been cut in the horizontal direction so that the heights of the punching bodies 41 of the leaf springs 6 are uniform, and a cutting surface 41c is formed. The cutting surface 41c is used as a contact portion for the ink ribbon 3. The other structures are substantially the same as those of the first embodiment. Here, a method of mounting the punching body 41 on the holding table 36 and a method of cutting the punching body 41 will be described. As shown in FIG. 9, first, the front end portion 6 a of each plate spring 6 is inserted into the card holding table 36 and fixed. Next, a recess 37 is formed in the front end surface 36a of the holding table 36 by a precision machining device such as a cutting machine. At this time, the formation position of the concave portion 37 is not required to be as precise as the formation position of the concave portion 37 in the first embodiment. Alternatively, after the recess 37 is formed on the front end surface 36a of the holding table 36, the holding table 36 may be inserted into the leaf spring 6 and fixed. Secondly, the spherical part which will be used as the punching body is placed on the concave part 37. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 male H) ------------- --- I ---- Order --------- (Please read the notes on the back before filling out this page) Printed by the Consumer Consumption Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs-19- ^ 01987 ---- ------- B7____ 5. Description of the invention (17) 41, and the spherical member 41 is fixed on the holding table 36 using a method such as resistance welding. Since the spherical member 41 will be cut in a later procedure, its diameter is larger than that of the sphere used in the first embodiment, and it is preferable to use a diameter of about 0.6 to 0.8 mm, more preferably. Around 6 is better. As shown in Fig. 8, after the holding table 36 is installed, the surface 4ia of the upper half of the spherical member 41 is cut using a precision machining device having a cutting tool such as a diamond whetstone. At this time, the diameter 0 of the slightly mountain-like portion is about 0.2 mm. Thereafter, the top 4lb of the spherical member 41 is cut in the horizontal direction to make the heights of the spheres of the leaf springs 6 uniform to form a cutting surface 41c. Then, as shown in FIG. 10, the adjacent leaf springs 6 The spherical member 41 is formed by cutting the surface 41 a of the upper half of the spherical member 41 so that the cutting surface 41 c is shifted in the Y direction by a point distance p that matches the printing resolution. As a result, each of the spherical members 41 of the leaf springs 6 can be offset in the Y direction by a point distance corresponding to the printing resolution to the extent that the paper C is punched. As described above, according to the second embodiment, by cutting the spherical member 41 placed on the holding table 36, the contact portion with the ink ribbon 3, that is, the cutting surface 41c can be formed. Thereby, it is possible to move the contact portion between the adjacent pin member 40 and the ribbon 3 with a high degree of accuracy in accordance with the dot pitch of the printing resolution. That is, according to this embodiment, since the spherical member 41 is directly cut by using a precision machining device, for example, the positional accuracy of the punching point 41 can be further improved, and the same effect as that of the first embodiment can be achieved. . As mentioned above, although the embodiments of the present invention have been described according to the first and second embodiments of the present invention, the scope of the present invention is not limited to the above-mentioned actual paper size. The Chinese National Standard (CNS) A4 specification (210 X 297 Public Love) (Please read the notes on the back before filling out this page) 1 ------ i ^ i ----—— line ·. Printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs-20-501987

V. Description of the invention (18 Examples Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs [Description of the main component symbols] 1 ... Platen roller 2 ... Printing head 3 ... Ribbon 4 ... Ribbon case 5 ... Pin member 6 ... Leaf spring 6a ... Front end 6b of leaf spring 6 ... Mounting dagger 7 ... Transfer mechanism 8 ... Base body 8a ... End face 8b, 8c ... Mounting hole 8d ... Second edge portion 11 ... 1 12… 2 辘 13… 3rd 13a ·· One end of the 3 yoke 13 14 ... Coil 16 ·· Depression 17 ... Window 20 ... Mounting face 21 ... Inclined face 22 ... Horizontal face 24 ... Permanent Magnet 26 ... bottom 26a ... one of the end faces 27 of the bottom 26 ... protrusion 27a ... front end 28 of the protrusion 27 ... bobbin 30 ... printed circuit board 31 ... connector 32 ... spacer 33 ... heat sink 35 ... punch Body 35a ... Top 36 of spherical punching body 35 ... Holding table 36a ... Front end face 36b of holding table 36 ... Mounting part 37 ... Recess 37a ... Inner surface 18 ... Bolt 40 ... Pin member ---------- ----------- ^ --------- ^ {Please read the precautions on the back before filling this page) This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) -21- 501987 A7 B7_ V. Description of the invention (19) 41 ... Punching body 41 a ... Peripheral surface, surface of upper part of spherical member 41 41 b ... Top 41 c ... Cutting surface 5 0 ... Pin A ... Expansion angle C ... Paper D ... Diameter P ... Pitch Q ... Reference point (Please read the precautions on the back before filling in this page) -Packing · -----— Order -------- -Printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, this paper is printed in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) -22-

Claims (1)

C8 —---- ^ _ VI. Patent application range Dot matrix material _ seal, with elastically deformable leaf spring with pin structure 2 at the front end, and used to make the leaf spring face the A transfer device for instantaneous transfer of direction, and constitutes a person who can print in dot units by punching a paper member that can be transported in a predetermined transport direction via the ink supply member through the pin member; and the pin member is fixed by A holding table on the plate spring, and a spherical punching body held on the holding table and capable of contacting the ink supply member. 2. The printing head for a dot-matrix printer according to item 1 of the patent application scope, wherein the sphere is fixed on the inner surface of the recess. For example, the print head for dot-matrix printers declared in item 2 of the patent scope, wherein the inner surface of the recess is formed into a cone shape. 4. The printing head for dot-matrix printers as described in item 2 of the patent application, where the plate springs are arranged side by side in a direction perpendicular to the conveying direction of the paper, and the recesses are Those formed on the plate springs are shifted in a predetermined length toward the conveying direction of the paper according to the dot pitch of the printing resolution. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. If the print head for dot matrix printers in the scope of patent application item i, the diameter of the spherical punching body is set to 0.3 ~ 0.4 mm. 6. A printing head for a dot-matrix printer, which has an elastically deformable leaf spring provided with a pin member at the front end and a transfer device for instantaneously transferring the leaf spring in a predetermined direction, and is composed of If the pin member punches the paper that can be transported in the predetermined conveying direction through the ink supply member and prints in dot units; the paper size applies the Chinese National Standard (CNS) A4 size coffee X Norgoy) • 23- A8B8C8D8 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 6. The scope of the patent application. The pin member is formed by a holding table that is fixed to the leaf spring and has a concave α 卩 on the front end surface. Formed by the punching body on the recess; • The punching system has a shape that cuts a part of the spherical member. 7. The printing head for dot-matrix printers such as those in claim 6 of the scope of patent application, wherein the inner surface of the recess is formed in a tapered shape. > 8. The printing head for dot-matrix printers according to item 6 of the patent scope, wherein the plate springs are arranged side by side in a direction perpendicular to the conveying direction of the paper, and each of the punches is arranged. The body is partially cut off from each leaf spring, so that the contact portion of the punching body and the ink supply member is staggered in a predetermined length toward the conveying direction of the paper according to the dot pitch of the printing resolution. For example, the print head for a dot-matrix printer according to claim 6 of the patent scope, wherein the diameter of the spherical member is set to 0.6 to 0.8 mm. 1〇 · —A kind of dot-matrix printer, which has the printing head with the scope of patent application No. 2, 3, 4, 5, 6, 7, g, or 9. U · A method for manufacturing a printing head for a dot matrix printer, the printing head is provided with a pin member at the front end of an elastically deformable leaf spring, and is configured to allow the leaf spring to be instantaneously transferred in a predetermined direction. And the pin member is punched against the paper via the ink supply member and printed in dot units. 'The production of the pin member includes the following procedures: The retaining table is installed after the front end of the leaf spring, and A recessed portion is formed at a specific position on the front end surface of the holding table; and a recessed portion formed on the front end surface of the holding table to fix the lifting member. ^ State of the National Standard (ciil4 specification ⑽ x 297 mm) --------- IIIIIIIIIII1 · I I I I I I I ^ · 111! 111 (Please read the precautions on the back before filling out this page) -24- 501987 6. Scope of patent application. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. 12. A method for manufacturing a printing head for a dot matrix printer. The printing head is an elastically deformed leaf spring. If the leaf spring is shifted in a predetermined direction, and the pin member is punched against the paper through the ink supply member and printed in dot units, the production of the pin member includes the following procedures. A holding table formed with a recessed portion on the front end surface is mounted on the front end portion of the plate spring; a spherical member is fixed to the recessed portion formed on the end face of the holding A 卞 〇; and a part of the spherical member is cut and formed An impact body having a contact portion with the ink supply member. 13. · A method for manufacturing a printing head for a dot matrix printer, the printing head is provided with a pin member at the front end of an elastically deformable leaf spring, and is configured to allow the leaf spring to be instantaneously transferred in a predetermined direction. For the pin member to punch the paper through the ink supply member and print it in dot units, the production of the pin member includes the following procedures: The holding table is installed after the front end of the plate is bombarded, and A recessed portion is formed on the front end surface of the holding table; a recessed portion formed by fixing a spherical member to the front end surface of the holding table; and a portion of the spherical member is cut to form a punching portion having a contact portion with the ink supply member. !! 1 ilillt_i (Please read the notes on the back before filling this page) 4.