JP2022014058A - Head and printer - Google Patents

Abstract

To provide a printer which can suppress a deviation of a physical relation between a nose part and a guide roller support part from a prescribed physical relation.SOLUTION: A head included in a printer that performs printing on a printing medium by using an ink ribbon comprises: a nose part which guides each of a plurality of wires that adhere ink of the ink ribbon to the printing medium; a guide roller which protrudes in a direction heading to a platen of the printer from the head with respect to a head tip surface from which each of the plurality of wires protrudes and which rotates around a prescribed rotational shaft; a guide roller support part which is connected to the rotational shaft and rotatably supports the guide roller; a fastening part which fastens the nose part and the guide roller support part; and a support part which supports at least one of the nose part and the guide roller support part such that a relative position between a first portion provided in the nose part and a second portion provided in the guide roller support part does not change.SELECTED DRAWING: Figure 4

Description

The present invention relates to a head and a printing device.

Research and development are being conducted on printing equipment that prints on print media such as bank passbooks.

In this regard, a protrusion that projects at least a part of a plurality of wires to adhere the ink of the ink ribbon to the print medium, a nose portion that guides each of the plurality of wires protruding from the protrusion, and contact with the print medium. There is known a printing apparatus that prints with a head provided with a guide roller support portion that supports the guide roller that rotates (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2006-026952

In the head of a printing apparatus as described in Patent Document 1, the guide roller support portion is fastened to the nose portion by a screw so that the positional relationship between the nose portion and the guide roller support portion is a predetermined positional relationship. Will be done. However, in such fastening with screws, the positional relationship between the nose portion and the guide roller support portion may deviate from the predetermined positional relationship due to the screw tightening torque.

In order to solve the above problems, one aspect of the present invention is a head provided in a printing apparatus that prints on a printing medium using an ink ribbon, and a plurality of wires for adhering the ink of the ink ribbon to the printing medium. A nose portion that guides each of them, a guide roller that projects from the head toward the platen of the printing apparatus from the head tip surface on which each of the plurality of wires protrudes, and a guide roller that rotates around a predetermined rotation axis. A guide roller support portion that connects to the rotary shaft and rotatably supports the guide roller, a fastening portion that fastens the nose portion and the guide roller support portion, and a first portion provided on the nose portion. A head including a support portion that supports at least one of the nose portion and the guide roller support portion so that the relative position of the guide roller support portion with respect to the second portion does not change. ..

It is a perspective view which shows an example of the appearance of the printing apparatus 10 which concerns on embodiment. It is a perspective view which shows an example of a printing apparatus main body 11. It is a perspective view which shows an example of the main part structure of the printing apparatus main body 11. It is a figure which shows an example of the structure of a head HD. It is a perspective view which shows an example of the structure of the nose part HD2. It is a figure which illustrates the torque applied to the guide roller support part HD1 from each of the fastening part SC1 and the fastening part SC2. It is a figure for demonstrating the roller gap RG.

<Embodiment>
Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In the following, the directions in the figure will be described using the three-dimensional coordinate system TC. The three-dimensional coordinate system TC is a three-dimensional Cartesian coordinate system indicating a direction in each figure in which the three-dimensional coordinate system TC is drawn. In the following, for convenience of explanation, the X-axis in the three-dimensional coordinate system TC will be referred to simply as the X-axis. Further, in the following, for convenience of explanation, the Y-axis in the three-dimensional coordinate system TC will be referred to simply as the Y-axis. Further, in the following, for convenience of explanation, the Z-axis in the three-dimensional coordinate system TC will be referred to simply as the Z-axis.

Further, in the following, as an example, a case where the negative direction of the Z axis and the gravitational direction coincide with each other will be described. Then, in the following, for convenience of explanation, the positive direction of the Z axis will be referred to as upward or simply upward. Further, in the following, for convenience of explanation, the negative direction of the Z axis will be referred to as downward or simply downward. Further, in the following, for convenience of explanation, the positive direction of the Y-axis will be referred to as a right direction or simply a right direction. Further, in the following, for convenience of explanation, the negative direction of the Y-axis will be referred to as a left direction or simply a left direction. Further, in the following, for convenience of explanation, the positive direction of the X-axis will be referred to as a forward direction or simply forward. Further, in the following, for convenience of explanation, the negative direction of the X-axis will be referred to as a backward direction or simply after.

<Configuration of printing equipment>
First, the configuration of the printing apparatus 10 will be described. FIG. 1 is a perspective view showing an example of the appearance of the printing apparatus 10 according to the embodiment.

The printing device 10 is a dot impact printer. In the example shown in FIG. 1, the printing apparatus 10 is a passbook printer which is a kind of dot impact printer. Therefore, in the following, as an example, a case where the printing apparatus 10 is a passbook printer will be described. The printing device 10 may be another type of dot impact printer instead of the passbook printer.

Further, since the printing device 10 is a dot impact printer, printing is performed on a printing medium using an ink ribbon. The print medium 100 shown in FIG. 1 is an example of a print medium to be printed by the printing apparatus 10. Hereinafter, as an example, a case where the target to be printed by the printing apparatus 10 is the print medium 100 shown in FIG. 1 will be described.

Here, the print medium 100 is a sheet on which an image such as characters is printed. The print medium 100 may be, for example, a cut sheet cut to a predetermined length, or may be a continuous sheet in which a plurality of sheets are connected. The cut sheet may be, for example, plain paper such as cut sheet paper or cut sheet copy paper, may be a passbook, postcard, envelope, or the like, or may be another sheet cut to a predetermined length. good. The continuous sheet is, for example, continuous paper, continuous copying paper, or the like. In the following, since the printing apparatus 10 shown in FIG. 1 is a passbook printer, a case where the printing medium 100 is a passbook will be described as an example. In this case, the print medium 100 is configured by binding a plurality of recording sheets, and the magnetic stripe 101 is provided on the surface that becomes the bottom surface when the recording surface of the recording sheets is opened. The print medium 100 may be another booklet having pages having different paper thicknesses, such as a passbook. Further, the print medium 100 may not be provided with the magnetic stripe 101.

Further, the printing apparatus 10 includes a printing apparatus main body 11, an upper cover 12 which is an exterior body covering the printing apparatus main body 11, an upper housing 13, and a lower housing 14. A manual opening 15 is opened on the front surface of the upper housing 13 and the lower housing 14. In FIG. 1, the printing apparatus main body 11 is not visible because it is located inside the printing apparatus 10.

FIG. 2 is a perspective view showing an example of the printing apparatus main body 11. Further, FIG. 3 is a perspective view showing an example of the main part configuration of the printing apparatus main body 11.

The printing apparatus main body 11 has a main body frame (not shown) including a left side frame 16 and a right side frame 17. In the printing apparatus main body 11, a carriage shaft CA is bridged between the left side frame 16 and the right side frame 17 included in the main body frame. Further, the printing apparatus main body 11 has a printing mechanism unit PM including a head HD and a carriage CG. Further, the printing apparatus main body 11 is provided at a position facing the head HD, and includes a flat plate-shaped platen PL that can be moved in a direction approaching the head HD and a direction away from the head HD.

Here, the head HD is a print head of a dot impact printer. The head HD prints an image such as characters on the print medium 100 by projecting at least a part of the plurality of wires (pins) and adhering the ink of the ink ribbon to the print medium 100. In other words, the head HD is an impact type print head having a wire that hits the print medium 100.

Further, in the printing apparatus 10, an ink ribbon is arranged between the wire protruding from the head HD and the printing medium 100. Therefore, when a certain wire protrudes from the head HD, the wire protruding from the head HD hits the ink ribbon and transfers the ink of the ink ribbon to the print medium 100. In other words, in this case, the wire is pressed against the print medium 100 via the ink ribbon, and the ink of the ink ribbon is transferred to the print medium 100. As a result, the printing apparatus 10 forms dots on the printing medium 100 and prints images such as characters on the printing medium 100. In FIGS. 2 and 3 in which the head HD is shown, a plurality of wires protruding from the head HD are omitted in order to simplify the drawing.

The ribbon cartridge CT mounted between the left side frame 16 and the right side frame 17 in FIG. 2 shows an example of a ribbon cartridge in which such an ink ribbon is folded and stored.

The carriage CG is slidably inserted through the carriage shaft CA. Further, the carriage CG is equipped with a head HD. The carriage CG is coupled to a timing belt (not shown). The timing belt is bridged over a belt drive pulley (not shown) driven by a carriage drive motor (not shown). The carriage CG is sandwiched between the left side frame 16 and the right side frame 17 in the main scanning direction corresponding to the axial direction of the carriage axis CA and the longitudinal direction of the platen PL by the forward rotation or the reverse rotation of the carriage drive motor. It is run (scanned). Therefore, the head HD mounted on the carriage CG can reciprocate in the scanning direction and print on the printing medium 100 conveyed in the direction orthogonal to the scanning direction. Here, in the examples shown in FIGS. 2 and 3, the axial direction of the carriage axis CA and the longitudinal direction of the platen PL are parallel to the Y axis. The transport direction in which the print medium is conveyed may be configured to intersect the scanning direction without being orthogonal to the scanning direction. Further, the axial direction of the carriage axis CA and the longitudinal direction of the platen PL may be non-parallel to the Y axis.

Further, the printing apparatus main body 11 has a transport unit H. The transport unit H transports the print medium 100 in a transport direction orthogonal to the scanning direction of the carriage CG. In the example shown in FIGS. 2 and 3, since the scanning direction of the carriage CG is parallel to the Y axis, the printing medium has the front direction and the rear direction of the printing apparatus 10 as the transport directions. Transport 100. Here, the transport unit H includes the transport motor MT shown in FIG. 2 and the plurality of transport roller CRs shown in FIG. The transport unit H rotates a plurality of transport roller CRs via various gears (not shown) by driving the transport motor MT. Here, the direction in which the plurality of transfer roller CRs rotate is determined according to the rotation direction of the transfer motor MT. That is, the transport unit H switches the meshing of these gears between the case where the transport direction is the front direction and the case where the transport direction is the rear direction, so that the print medium 100 is either in the front direction or the rear direction. Can be transported in the transport direction of. In addition, in FIGS. 2 and 3, in order to prevent the figure from becoming complicated, the configurations of the transport unit H other than the transport motor MT and the plurality of transport roller CRs are omitted. Further, in FIG. 2, in order to simplify the figure, the transfer motor MT is drawn as a cube-shaped object. Further, in FIG. 2, in order to simplify the drawing, the transfer motor MT is drawn at a position different from the position where the transfer motor MT is actually provided.

Further, the printing apparatus main body 11 has a magnetic data reading unit MR that reads and writes magnetic information of the magnetic stripe 101 provided on the printing medium 100.

With the above configuration, the printing apparatus 10 hits the ink ribbon with the head HD while conveying the printing medium 100, and prints an image such as characters on the printing medium 100.

<Head configuration>
Here, the configuration of the head HD will be described in more detail. FIG. 4 is a diagram showing an example of the configuration of the head HD. The shape of the head HD shown in FIG. 4 is different from the shape of the head HD shown in FIG. 3 because the cover covering the head HD is removed from the head HD. The head HD may be configured to include such a cover, or may be configured not to include such a cover.

The head HD includes a fastening portion SC1, a fastening portion SC2, a drive portion PJ, a wire guide member WG, a guide roller GR, a guide roller support portion HD1, a nose portion HD2, and a support portion SP. The head HD may be configured not to include either the fastening portion SC1 or the fastening portion SC2. Further, the head HD may be configured to include another fastening portion in place of either or both of the fastening portion SC1 and the fastening portion SC2. Further, the head HD may be configured to include another fastening portion in addition to one or both of the fastening portion SC1 and the fastening portion SC2. Further, the fastening portion SC1 and the fastening portion SC2 may be integrally configured.

The fastening portion SC1 and the fastening portion SC2 fasten the nose portion HD2 and the guide roller support portion HD1. In the example shown in FIG. 4, the fastening portion SC1 and the fastening portion SC2 are screws. In addition, one or both of the fastening portion SC1 and the fastening portion SC2 may be another fastening member capable of fastening the nose portion HD2 and the guide roller support portion HD1 instead of the screws.

When the drive unit PJ is energized, at least a part of the plurality of wires is projected to adhere the ink of the ink ribbon to the print medium 100. The drive unit PJ is provided above the nose unit HD2 and is located inside the cover that covers the head HD during normal use of the head HD. Therefore, the illustration of the drive unit PJ is omitted in FIG. The position of the drive unit PJ in the head HD is shown in FIG.

Here, each of the plurality of wires projecting from the drive unit PJ is arranged in parallel or substantially parallel to each other, and is guided by the wire guide member WG so as to project in the same direction as each other. Further, among the surfaces of the wire guide member WG, these plurality of wires are projected from the head tip surface M shown in FIG. 4 toward the outside of the wire guide member WG. Therefore, the head tip surface M is provided with the same number of through holes as the number of wires through which the individual wires included in the plurality of wires pass. Further, the head tip surface M is a surface of the surface of the wire guide member WG that faces the platen PL during normal use of the printing apparatus 10. In FIG. 4, the head tip surface M is not visible because it is located behind the guide roller GR and the guide roller support portion HD1. Further, among the portions of the head HD, the portion including the head tip surface M and protruding from the top to the bottom may be referred to as a protruding portion. In this case, the head tip surface M can also be referred to as the lower surface of the protruding portion.

As shown in FIG. 4, the guide roller GR projects from the head HD toward the platen PL of the printing apparatus 10 from the head tip surface M, and rotates around a predetermined rotation axis AX. In other words, as shown in FIG. 4, the guide roller GR projects in the protruding direction from the head tip surface M and rotates around a predetermined rotation axis AX. Therefore, when printing is performed by the head HD, the guide roller GR comes into contact with the print medium 100 and rotates according to the movement of the head HD while pressing the print medium 100 from top to bottom. Therefore, the rotation axis AX may be an axis parallel to any direction as long as the guide roller GR can rotate according to the movement of the head HD. However, the rotation axis AX is preferably an axis parallel to the X axis as shown in FIG. 4 because the wear of the rotation axis AX is reduced.

The guide roller support portion HD1 is a member included in the head HD that is connected to the rotation shaft AX of the guide roller GR and rotatably supports the guide roller GR. The guide roller support portion HD1 is provided with an opening (not shown) through which each of the fastening portion SC1 and the fastening portion SC2 is inserted.

Among the members included in the head HD, the nose portion HD2 is a member provided with a drive portion PJ at the upper portion and a member provided with the above-mentioned wire guide member WG. Further, the nose portion HD2 is a member including a flange attached to the carriage CG among the members included in the head HD. Therefore, as shown in FIG. 5, the nose portion HD2 is provided with an opening FH1 and an opening FH2 through which two screws for fastening the nose portion HD2 to the carriage CG are inserted. FIG. 5 is a perspective view showing an example of the configuration of the nose portion HD2. Note that FIG. 5 shows the nose portion HD2 from which all the members attached to the nose portion HD2 have been removed in order to clearly show the configuration of the nose portion HD2.

Further, the nose portion HD2 is provided with a mounting portion GD to which the wire guide member WG is mounted. The attachment portion GD is a portion of the portion of the nose portion HD2 to which the wire guide member WG is attached. In the example shown in FIG. 5, the attachment portion GD is a portion of the portion of the nose portion HD2 having a groove into which the wire guide member WG is fitted. By attaching the wire guide member WG to the attachment portion GD, the direction in which each of the plurality of wires protrudes from the drive unit PJ through the head tip surface M can be made to coincide with the predetermined protrusion direction. Therefore, the wire guide member WG can guide each of the plurality of wires in a predetermined protruding direction by being attached to the attachment portion GD. In other words, the nose portion HD2 to which the wire guide member WG is attached guides each of the plurality of wires protruding from the drive portion PJ so as to protrude in a predetermined direction. Here, in the embodiment, the predetermined protruding direction is the negative direction of the Z axis. The predetermined protruding direction may be another direction instead of the negative direction of the Z axis. The nose portion HD2 may be integrally configured with at least one of the wire guide member WG and the drive portion PJ. Further, the wire guide member WG may be integrally configured with the drive unit PJ. Further, among the portions of the nose portion HD2, the portion including the lower end of the attachment portion GD and protruding from the top to the bottom is an example of the portion included in the above-mentioned protruding portion.

Further, the nose portion HD2 is also a member to which the guide roller support portion HD1 is attached among the members included in the head HD. Therefore, the nose portion HD2 has a mounting surface MM to which the guide roller support portion HD1 is mounted. In the example shown in FIG. 5, this mounting surface MM is a surface parallel to the YZ plane stretched by the Y-axis and the Z-axis. The mounting surface MM may be a surface non-parallel to the YZ plane.

Here, for convenience of explanation, the direction parallel to the mounting surface MM and orthogonal to the protruding direction will be referred to as an intersection direction. The reason for calling it the crossing direction is that the crossing direction intersects with the protruding direction. The crossing direction may be paraphrased as a direction parallel to the rotation axis AX of the guide roller GR and a direction crossing both the protruding direction. Further, the crossing direction may be a direction that intersects the protruding direction and is not orthogonal to the protruding direction. The crossing direction is parallel to the Y axis in the examples shown in FIGS. 4 and 5.

At the center of the mounting surface MM in the crossing direction, a mounting portion GD for mounting the wire guide member WG is provided. Further, among the positions on the mounting surface MM, a fastening portion SC1 for fastening the guide roller support portion HD1 to the nose portion HD2 is located at a position located between the first end portion EG11 of the mounting surface MM and the mounting portion GD. A screw hole SH1 to be fastened is provided. The first end portion EG11 of the mounting surface MM is the end portion of the mounting surface MM on the negative direction side of the Y axis. In other words, the first end portion EG11 of the mounting surface MM is one of both ends of the mounting surface MM in the crossing direction. Further, among the positions on the mounting surface MM, a fastening portion SC2 for fastening the guide roller support portion HD1 to the nose portion HD2 is located at a position located between the second end portion EG12 of the mounting surface MM and the mounting portion GD. A screw hole SH2 to be fastened is provided. The second end portion EG12 of the mounting surface MM is the end portion of the mounting surface MM on the positive direction side of the Y axis. In other words, the second end portion EG12 of the mounting surface MM is the other of both ends of the mounting surface MM in the crossing direction. The first end portion EG11 is an example of the first end portion of the nose portion. Further, the second end portion EG12 is an example of the second end portion of the nose portion.

In the examples shown in FIGS. 4 and 5, the shape of the mounting surface MM is substantially line-symmetrical with the mounting portion GD interposed therebetween. However, the shape of the mounting surface MM may be different from the shape substantially line-symmetrical with the mounting portion GD interposed therebetween.

The position of the screw hole SH1 on the mounting surface MM and the position of the screw hole SH2 on the mounting surface MM sandwich the mounting portion GD because the fastening of the guide roller support portion HD1 to the nose portion HD2 becomes stronger. The farther they are from each other, the more desirable. Therefore, in the examples shown in FIGS. 4 and 5, the screw hole SH1 is provided on the mounting surface MM at a position closer to the first end portion EG11 than the mounting portion GD. Further, in this example, the screw hole SH2 is provided at a position closer to the second end portion EG12 than the mounting portion GD on the mounting surface MM.

Here, the guide roller support portion HD1 is fastened to the nose portion HD2 by the fastening portion SC1 and the fastening portion SC2 which are screws so that the positional relationship between the nose portion HD2 and the guide roller support portion HD1 has a predetermined positional relationship. Ru. However, when the guide roller support portion HD1 is fastened to the nose portion HD2 by the fastening portion SC1 and the fastening portion SC2, torque is transmitted from each of the fastening portion SC1 and the fastening portion SC2 to the guide roller support portion HD1 by screw tightening. As a result, the positional relationship between the nose portion HD2 and the guide roller support portion HD1 may deviate from a predetermined positional relationship. FIG. 6 is a diagram illustrating the torque applied to the guide roller support portion HD1 from each of the fastening portion SC1 and the fastening portion SC2. The arrow A1 shown in FIG. 6 indicates the magnitude and direction of the torque applied from the fastening portion SC1 to the guide roller support portion HD1 when the fastening portion SC1 is screwed. Further, the arrow A2 shown in FIG. 6 indicates the magnitude and direction of the torque applied from the fastening portion SC2 to the guide roller support portion HD1 when the fastening portion SC2 is screwed. When these torques are applied to the guide roller support portion HD1, the positional relationship between the nose portion HD2 and the guide roller support portion HD1 may deviate from a predetermined positional relationship. In order to solve this problem, a support portion SP is provided on the mounting surface MM of the nose portion HD2 as the first portion PH1 of the nose portion HD2.

The support portion SP is a member that supports the guide roller support portion HD1 so that the relative positions of the first portion PH1 of the nose portion HD2 and the second portion PH2 provided on the guide roller support portion HD1 do not change. be. In the examples shown in FIGS. 4 and 5, the support portion SP is a cylindrical pin. In this case, the guide roller support portion HD1 is provided with a portion including the second opening H2 into which the pin is inserted as the second portion PH2 of the guide roller support portion HD1. The support portion SP may be a pin having another shape instead of the cylindrical pin, or may be another member capable of supporting the guide roller support portion HD1 instead of the pin. For example, the support portion SP supports the guide roller with respect to the nose portion HD2 while maintaining the positional relationship between the nose portion HD2 and the guide roller support portion HD1 among the members provided in the nose portion HD2. The member may be a member that holds the guide roller support portion HD1 so that the portion HD1 does not move. In this case, the first portion PH1 may be any portion as long as it is a portion of the nose portion HD2. Further, in this case, any part may be used as long as it is a part of the second part PH2.

Here, the relative positions of the nose portion HD2 and the guide roller support portion HD1 are the X-axis shown in FIGS. 4 and 5 when the support portion SP is inserted through the second opening H2 of the second portion PH2. It does not change in the direction parallel to. Therefore, in the examples shown in FIGS. 4 and 5, the position of the first portion PH1 is represented by the position of the central axis of the first portion, which is a cylindrical pin, on the YZ plane. Further, in this example, the position of the second portion PH2 is represented by the position of the central axis of the cylindrical second opening H2 on the YZ plane. When the positions of the first portion PH1 and the second portion PH2 are represented in this way, the relative positions of the nose portion HD2 and the guide roller support portion HD1 are such that the guide roller support portion HD1 is the central axis of the support portion SP. Even if it is rotated around, it does not change. That is, by configuring the support portion SP in this way, the relative positions of the first portion PH1 provided in the nose portion HD2 and the second portion PH2 provided in the guide roller support portion HD1 change. The guide roller support portion HD1 can be supported so as not to be.

When such a support portion SP is inserted through the second opening H2, even if torque is applied to the guide roller support portion HD1 by each of the fastening portion SC1 and the fastening portion SC2, the guide roller support portion is provided by the support portion SP. The movement of the HD1 is restricted, and the positional relationship between the nose portion HD2 and the guide roller support portion HD1 is maintained as a predetermined positional relationship. That is, by providing the support portion SP, the head HD can prevent the positional relationship between the guide roller support portion and the nose portion from deviating from a predetermined positional relationship.

Of the portions of the guide roller support portion HD1, the portion in the region surrounded by the dotted line shown in FIG. 4 is an example of the second portion PH2. However, the second portion PH2 of the guide roller support portion HD1 may be a portion within a region wider than the region, instead of the portion within the region surrounded by the dotted line shown in FIG. 4, and FIG. 4 shows. It may be a part in a region narrower than the part in the area surrounded by the indicated dotted line. However, the second portion PH2 is a portion including the second opening H2 in any case.

Further, the support portion SP may be provided at any position on the mounting surface MM of the nose portion HD2 as the first portion PH1, except for the positions where the screw holes SH1 and the screw holes SH2 are respectively provided. In the example shown in FIG. 5, the support portion SP is provided at a position closer to the screw hole SH2 than the screw hole SH1 as the first portion PH1. In other words, the support portion SP is provided as the first portion PH1 at a position closer to the second end portion EG12 in the crossing direction than the first end portion EG11 on the mounting surface MM.

Here, the distance X1 between the tip E of the guide roller GR and the first portion PH1 in the protruding direction is, as shown in FIG. 4, the first end portion EG21 and the first portion PH1 of the guide roller support portion HD1. The configuration may be shorter than the distance X2 between the two. The first end portion EG21 of the guide roller support portion HD1 is the end portion of the two ends of the guide roller support portion HD1 in the crossing direction, which is farther from the second portion PH2. In this case, the assembler who assembles the head HD can easily perform the adjustment work of matching the roller gap RG shown in FIG. 7 to a predetermined distance. FIG. 7 is a diagram for explaining the roller gap RG. The roller gap RG is the distance between the tip E of the guide roller GR and the head tip surface M in the distance in the protruding direction. If the roller gap RG does not match a predetermined distance, the printing apparatus 10 may fail to print on the printing medium 100. In order not to cause such a problem, the printing apparatus 10 is adjusted to match the guide roller GR with a predetermined distance before shipping. This adjustment is done manually by the assembler. Therefore, facilitating this adjustment is important for improving the work efficiency of the assembler.

When the distance X1 is shorter than the distance X2, the assembler moves the first end portion EG21 of the guide roller support portion HD1 to rotate the guide roller support portion HD1 around the central axis of the first portion PH1 which is the support portion SP. Even so, the amount of movement of the tip E of the guide roller GR is smaller than the amount of movement of the first end EG21 of the guide roller support portion HD1. Therefore, the head HD can facilitate the adjustment of the roller gap RG by the assembler. However, in order to obtain such an effect, the support portion SP is a member having a shape capable of rotatably supporting the guide roller support portion HD1 around the central axis of the support portion SP with respect to the nose portion HD2. Must be. The cylindrical pin is an example of the member. Therefore, as in the embodiment, when the support portion SP is a cylindrical pin, the head HD performs an adjustment work of adjusting the roller gap RG to a predetermined distance by making the distance X1 shorter than the distance X2. It can be easily done by the assembler.

<Modification 1 of the embodiment>
Hereinafter, a modification 1 of the embodiment will be described.

In the first modification of the embodiment, the support portion SP is provided on the guide roller support portion HD1 as the second portion PH2. In this case, the mounting surface MM of the nose portion HD2 is provided with a first portion PH1 including a first opening H1 through which the support portion SP is inserted. That is, in the support portion SP according to the modified example 1 of the embodiment, the relative positions of the first portion PH1 provided in the nose portion HD2 and the second portion PH2 provided in the guide roller support portion HD1 do not change. As described above, it is a member that supports the nose portion HD2. Even in this case, the support portion SP may be a pin having a cylindrical shape or a pin having a shape different from that of the cylindrical shape. When the support portion SP is a cylindrical pin, the guide roller support portion HD1 is rotatably supported around the central axis of the support portion SP with respect to the nose portion HD2.

Even with such a configuration, the head HD can prevent the positional relationship between the nose portion HD2 and the guide roller support portion HD1 from deviating from a predetermined positional relationship, as in the embodiment. Further, in the head HD, when the support portion SP is a cylindrical pin, the distance X1 is made shorter than the distance X2, so that the assembler can easily perform the adjustment work to match the roller gap RG with the predetermined distance. Can be made.

<Modification 2 of the embodiment>
Hereinafter, the second modification of the embodiment will be described.

In the second modification of the embodiment, the support portion SP is a separate body from both the nose portion HD2 and the guide roller support portion HD1. In this case, the mounting surface MM of the nose portion HD2 is provided with a first portion PH1 including a first opening H1 through which the support portion SP is inserted. Further, in this case, the guide roller support portion HD1 is provided with a second portion PH2 including the second opening H2, as in the embodiment. Then, the support portion SP is inserted through both the first opening H1 and the second opening H2. That is, in the support portion SP according to the modified example 2 of the embodiment, the relative positions of the first portion PH1 provided on the nose portion HD2 and the second portion PH2 provided on the guide roller support portion HD1 do not change. As described above, it is a member that supports both the nose portion HD2 and the guide roller support portion HD1. In this case, the head HD may be configured to include a fixing portion for fixing the support portion SP so that the support portion SP does not fall out from each of the first opening H1 and the second opening H2. Further, in this case, the head HD may be configured such that the support portion SP is adhered or crimped so that the support portion SP does not fall out from each of the first opening H1 and the second opening H2. Further, even in this case, the support portion SP may be a pin having a cylindrical shape or a pin having a shape different from the cylindrical shape. When the support portion SP is a cylindrical pin, the nose portion HD2 and the guide roller support portion HD1 are rotatably supported around the central axis of the support portion SP.

Even with such a configuration, the head HD can prevent the positional relationship between the nose portion HD2 and the guide roller support portion HD1 from deviating from a predetermined positional relationship, as in the embodiment. Further, in the head HD, when the support portion SP is a cylindrical pin, the distance X1 is made shorter than the distance X2, so that the assembler can easily perform the adjustment work to match the roller gap RG with the predetermined distance. Can be made.

As described above, the head according to the embodiment is a head provided in a printing apparatus that prints on a printing medium using an ink ribbon, and guides each of a plurality of wires for adhering the ink of the ink ribbon to the printing medium. A guide roller that protrudes from the head toward the platen of the printing device and rotates around a predetermined rotation axis from the nose portion and the head tip surface on which each of the plurality of wires protrudes is connected to the rotation axis. , A guide roller support portion that rotatably supports the guide roller, a fastening portion that fastens the nose portion and the guide roller support portion, a first portion provided on the nose portion, and a first portion provided on the guide roller support portion. A support portion that supports at least one of the nose portion and the guide roller support portion is provided so that the relative positions with respect to the two portions do not change. As a result, the head can prevent the positional relationship between the nose portion and the guide roller support portion from deviating from a predetermined positional relationship. Here, in the example described above, the head HD is an example of a head. Further, in the example described above, the print medium 100 is an example of the print medium. Further, in the example described above, the nose portion HD2 is an example of the nose portion. Further, in the example described above, the head tip surface M is an example of the head tip surface. Further, in the example described above, the platen PL is an example of the platen. Further, in the example described above, the rotary shaft AX is an example of a predetermined rotary shaft. Further, in the example described above, the guide roller GR is an example of the guide roller. Further, in the example described above, the guide roller support portion HD1 is an example of the guide roller support portion. Further, in the example described above, each of the fastening portion SC1 and the fastening portion SC2 is an example of the fastening portion. Further, in the example described above, the first site PH1 is an example of the first site. Further, in the example described above, the second site PH2 is an example of the second site. Further, in the example described above, the support portion SP is an example of the support portion.

Further, in the head, the first portion is a portion including the first opening among the portions provided in the nose portion, the support portion is a pin inserted through the first opening, and the guide roller support portion has a first portion. A configuration may be used that is provided as two sites and supports the nose portion by being inserted through the first opening. Here, in the example described above, the first opening H1 is an example of the first opening.

Further, in the head, the shape of the pin is a cylindrical shape, and the nose portion is rotatably supported by the support portion around the central axis of the pin with respect to the guide roller support portion, even if a configuration is used. good.

Further, in the head, the second portion is a portion including the second opening among the portions provided in the guide roller support portion, the support portion is a pin inserted through the second opening, and the nose portion has a second portion. A configuration may be used that is provided as one site and supports the guide roller support portion by being inserted through the second opening. Here, in the example described above, the second opening H2 is an example of the second opening.

Further, in the head, the shape of the pin is a cylindrical shape, and the guide roller support portion is rotatably supported by the support portion around the central axis of the pin with respect to the nose portion, even if a configuration is used. good.

Further, in the head, the first portion is a portion of the portion provided in the nose portion including the first opening, and the second portion is a portion of the portion provided in the guide roller support portion having the second opening. The portion including, the support portion is a pin inserted through the first opening and the second opening, and supports both the nose portion and the guide roller support portion by being inserted through the first opening and the second opening. , Configuration may be used.

Further, in the head, the shape of the pin is a cylindrical shape, and the nose portion and the guide roller support portion may be rotatably supported around the central axis of the pin by the support portion.

Further, in the head, the distance between the tip of the guide roller in the projecting direction in which each of the plurality of wires is projected and the first portion intersects both the direction parallel to the predetermined rotation axis and the projecting direction. A configuration may be used that is shorter than the distance between the first end of the two ends of the guide roller support in the crossing direction and the first portion. Here, in the example described above, the tip E of the guide roller GR is an example of the tip of the guide roller. Further, in the example described above, the first end portion EG21 is an example of the first end portion. Further, in the example described above, the distance X1 is an example of the distance between the tip of the guide roller and the first portion in the protruding direction in which each of the plurality of wires is projected from the protruding portion. Further, in the example described above, the distance X2 is the first end portion of the two ends of the guide roller support portion in the crossing direction intersecting both the direction parallel to the predetermined rotation axis and the protrusion direction. Is an example of the distance between the first part and the first part.

Further, in the head, the first portion is closer to the second end of the two ends of the nose portion in the crossing direction than the first end of the two ends of the nose portion in the crossing direction. The configuration may be used. Here, in the example described above, the first end portion EG11 is an example of the first end portion of the two ends of the nose portion. Further, in the example described above, the second end portion EG12 is an example of the second end portion of the two ends of the nose portion.

Although the embodiment of the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and changes, substitutions, deletions, etc. are made as long as the gist of the present invention is not deviated. May be done.

10 ... Printing device, 11 ... Printing device body, 12 ... Upper cover, 13 ... Upper housing, 14 ... Lower housing, 15 ... Manual opening, 16 ... Left side frame, 17 ... Right side frame, 100 ... Printing medium, 101 ... Magnetic stripe, AX ... Rotating shaft, CA ... Carriage shaft, CG ... Carriage, CR ... Conveying roller, CT ... Ribbon cartridge, E ... Tip, EG11, EG21 ... First end, EG12 ... Second end, FH1, FH2 ... opening, GD ... mounting part, GR ... guide roller, H ... transport part, H1 ... first opening, H2 ... second opening, HD ... head, HD1 ... guide roller support part, HD2 ... nose part, M ... head Tip surface, MM ... mounting surface, MR ... magnetic data reading part, MT ... transfer motor, PH1 ... first part, PH2 ... second part, PJ ... drive part, PL ... platen, PM ... printing mechanism part, RG ... roller Gap, SC1, SC2 ... Fastening part, SH1, SH2 ... Screw hole, SP ... Support part, WG ... Wire guide member

Claims (10)

A head provided in a printing device that prints on a printing medium using an ink ribbon.
A nose portion that guides each of the plurality of wires that adhere the ink of the ink ribbon to the print medium, and
A guide roller that protrudes from the head toward the platen of the printing apparatus and rotates around a predetermined rotation axis from the head tip surface on which each of the plurality of wires protrudes.
A guide roller support portion that is connected to the rotating shaft and rotatably supports the guide roller,
A fastening portion for fastening the nose portion and the guide roller support portion,
At least one of the nose portion and the guide roller support portion is provided so that the relative positions of the first portion provided on the nose portion and the second portion provided on the guide roller support portion do not change. Supporting parts and supporting parts
Head equipped with. The first portion is a portion including the first opening among the portions provided in the nose portion.
The support portion is a pin inserted through the first opening, is provided as the second portion in the guide roller support portion, and supports the nose portion by being inserted through the first opening.
The head according to claim 1. The shape of the pin is a cylindrical shape.
The nose portion is rotatably supported by the support portion around the central axis of the pin with respect to the guide roller support portion.
The head according to claim 2. The second portion is a portion including the second opening among the portions provided on the guide roller support portion.
The support portion is a pin inserted through the second opening, is provided in the nose portion as the first portion, and is inserted through the second opening to support the guide roller support portion.
The head according to claim 1. The shape of the pin is a cylindrical shape.
The guide roller support portion is rotatably supported by the support portion around the central axis of the pin with respect to the nose portion.
The head according to claim 4. The first portion is a portion including the first opening among the portions provided in the nose portion.
The second portion is a portion including the second opening among the portions provided on the guide roller support portion.
The support portion is a pin inserted through the first opening and the second opening, and by being inserted through the first opening and the second opening, both the nose portion and the guide roller support portion are inserted. To support,
The head according to claim 1. The shape of the pin is a cylindrical shape.
The nose portion and the guide roller support portion are rotatably supported around the central axis of the pin by the support portion.
The head according to claim 6. The distance between the tip of the guide roller and the first portion in the projecting direction in which each of the plurality of wires is projected is the crossing direction in which both the direction parallel to the rotation axis and the projecting direction intersect. Is shorter than the distance between the first end of the two ends of the guide roller support and the first portion.
The head according to any one of claims 1 to 7. The first portion is closer to the second end of the two ends of the nose in the cross direction than the first end of the two ends of the nose in the cross direction. Is,
The head according to claim 8. The printing apparatus includes the head according to any one of claims 1 to 9.
Printing equipment.

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