JP2002011915A - Recording head fixing structure of recorder and recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance heat dissipation performance of a recording head. SOLUTION: In the recording head fixing structure of a printer where a recording head 18 comprising a recording wire and a heat sink 63 is fixed to a carriage 19, the recording head is fixed to the carriage while being positioned to touch the carriage at the front face part 66 and the bottom face part 67.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dot impact type recording apparatus in which a recording head includes a recording wire and a radiator, and a recording head mounting structure of the recording apparatus.

[0002]

2. Description of the Related Art In a recording apparatus, while a recording head is running in an axial direction of a platen, a large number of recording wires of the recording head are hit on a sheet located on a front peripheral surface of the platen via an ink ribbon. There is a dot impact printer that performs recording and writing on this sheet.

In such a recording head of a printer, heat generated by a driving unit for operating a recording wire is radiated by using a radiator having a plurality of fins. this house,
When the recording head is attached to the carriage via a nose portion for accommodating the recording wires and guiding these recording wires, and particularly when the nose portion is made of resin, the heat generated by the above-described driving unit is generated by the carriage. The heat is directly radiated from the radiator to the atmosphere without being transferred to the air (first prior art).

The nose of the recording head of the first prior art is made of metal (aluminum or aluminum alloy).
(2nd prior art).

Further, when the bottom portion of the radiator is fixed to the carriage and the recording head is mounted on the carriage, the heat generated by the driving section is directly radiated from the radiator and transmitted to the carriage. After being heated, the heat is radiated through this carriage (third prior art).

[0006]

In the first prior art, since the heat generated in the drive section of the recording head is radiated to the atmosphere only by the radiator, it is not always necessary that the recording head has sufficient heat radiation performance. I can't say.

In the second prior art, the radiator of the recording head and the carriage are contacted by the nose portion of the recording head, and the radiating area is small. In this case, too, the radiating performance of the recording head cannot be said to be sufficient. In addition, a nose portion is interposed in the heat radiation path, which is inappropriate.

Further, in the third prior art, the heat generated in the driving section of the recording head is radiated to the atmosphere via the radiator and the carriage, so that the heat radiation performance of the recording head is lower than that of the first prior art. Has improved. However, since the bottom of the radiator is only in contact with the carriage, the radiating area between the recording head and the carriage is not always sufficient.

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above circumstances, and has as its object to provide a recording head mounting structure of a recording apparatus and a recording apparatus capable of improving the heat radiation performance of the recording head.

[0010]

According to a first aspect of the present invention, in a recording head mounting structure of a recording apparatus for mounting a recording head having a recording wire and a radiator on a carriage, the recording head is provided at at least two places. It is characterized by being positioned while being in contact with the carriage, and attached to the carriage.

According to a second aspect of the present invention, in the first aspect of the present invention, a nose portion is connected to the radiator, and a bottom portion of the radiator, a front portion of the radiator, and the nose portion are connected to each other. At least two portions are in contact with the carriage.

According to a third aspect of the present invention, in the first or second aspect of the present invention, at least two of the contact surface portions of the recording head that contact the carriage are perpendicular to each other, and the mounting force is simultaneously applied to at least two contact surface portions. An attachment member is provided to operate.

According to a fourth aspect of the present invention, in the first or second aspect of the present invention, a nose portion is connected to the radiator, and a spring member is interposed between the nose portion and the carriage. The nose portion or the front portion of the radiator is configured to be held in contact with the carriage by a restoring force of a spring member.

[0014] The invention according to claim 5 provides the invention according to claims 1 to 4.
In the invention according to any one of the above, an intervening member having heat conductivity and flexibility is arranged on at least one contact surface between the recording head and the carriage.

According to a sixth aspect of the present invention, a recording head having a recording wire and a radiator is mounted on a carriage that can travel along a platen, and the recording wire protrudes toward the platen. In a recording apparatus in which an image is recorded on a sheet conveyed between the platen and the recording head, the recording head is positioned while contacting the carriage at at least two places,
It is characterized by being attached to the carriage.

According to the invention of claim 7, in claim 6,
In the invention described in the above, a nose portion is continuously provided to the radiator, and at least two portions of a bottom portion of the radiator, a front portion of the radiator, and the nose portion are configured to contact a carriage. It is characterized by the following.

According to an eighth aspect of the present invention, in the invention of the sixth or seventh aspect, among the contact surfaces of the recording head that contact the carriage, the mounting force is simultaneously applied to at least two contact surfaces orthogonal to each other. An attachment member is provided to operate.

According to a ninth aspect of the present invention, in the invention according to the sixth or seventh aspect, a nose portion is connected to the radiator, and a spring member is interposed between the nose portion and the carriage. The nose portion or the front portion of the radiator is configured to be held in contact with the carriage by a restoring force of a spring member.

According to a tenth aspect of the present invention, in the invention of any of the sixth to ninth aspects, at least one contact surface between the recording head and the carriage has heat conductivity and flexibility. An interposed member is arranged.

The invention according to the first, second, fourth, sixth, seventh or ninth aspect has the following effects.

Since the recording head comes into contact with the carriage at at least two places and is attached to the carriage, the contact area between the recording head and the carriage increases, so that the heat transfer from the radiator of the recording head to the carriage is performed. A sufficient heat area can be secured. As a result, the heat radiation performance of the recording head can be improved.

The invention according to claim 3 or 8 has the following operation.

Since the mounting members are arranged on the contact surfaces of at least two recording heads perpendicular to each other so that the mounting force is simultaneously applied, the mounting members ensure the ease of mounting the recording head on the carriage. In addition, the heat transfer area between the carriage and the recording head can be increased, and the heat radiation performance of the recording head can be improved.

The invention according to claim 5 or 10 has the following operation.

Since the interposed member having heat conductivity and flexibility is arranged on at least one contact surface between the recording head and the carriage, the interposed member can be deformed to position the recording head on the carriage. Further, it is possible to further facilitate the attachment of the recording head to the carriage.

[0026]

Embodiments of the present invention will be described below with reference to the drawings.

[A] First Embodiment (FIGS. 1 to 5) FIG. 1 is a perspective view showing a printer body of a dot impact printer to which a first embodiment of a recording apparatus according to the present invention is applied. It is. FIG. 2 is a plan view showing the printer main body of FIG. FIG. 3 is a right side view showing the printer main body of FIG.

The printer 10 as a recording apparatus shown in these figures records characters by hitting a large number of recording wires (not shown) of a recording head onto a sheet S via an ink ribbon 50 (FIG. 4). It is a dot impact printer that prints an image including the image. This printer 1
Reference numeral 0 denotes a printer main body 11 as a recording apparatus main body, a push tractor unit 12 and a discharge unit 13 detachably mounted on the printer main body 11, and upper and lower parts of the printer main body 11, as shown in FIG. And an upper case (not shown) and a lower case (not shown).

Here, the sheet S is plain paper (continuous paper or cut sheet), coated paper, OHP (overhead projector) paper, film, or the like. In the present embodiment, continuous paper or cut paper will be described.

The printer body 11 includes a base frame 14 as a body frame, a sheet guide frame 15
(FIG. 4), a left side frame 16 and a right side frame 17, a printing mechanism unit 20 including a recording head 18 and a carriage 19, and a sheet transport including a platen 21, a sheet guide 22, and a pinch roller 51 (FIG. 4). Mechanism 23
And is configured.

The base frame 14 and the seat guide frame 15 are arranged substantially in parallel as shown in FIG. 3, and the left side frame 16 and the right side frame 17 are provided at both ends of the base frame 14 and the seat guide frame 15, respectively.
Are respectively erected and fixed. As shown in FIG. 1, a carriage guide shaft 24 is hung and pivotally supported between the left side frame 16 and the right side frame 17, and a platen 21 is hung and rotatably arranged. Has been established. The seat guide 22 is provided on the left side frame 16.
And the right side frame 17, and is fitted and fixed to the seat guide frame 15. Also, the rear portions of the left side frame 16 and the right side frame 17,
The push tractor unit 1 is provided on each upper part.
2. A tractor unit mounting portion and a discharging unit mounting portion (not shown) to which the discharging unit 13 can be mounted are provided.

The push tractor unit 12 shown in FIG.
Sends out the continuous paper as the sheet S to the sheet transport mechanism 23, and the discharge unit 13 pulls out the continuous paper or the cut sheet from the sheet transport mechanism 23 to the outside of the printer 10.

As shown in FIG. 2, the push tractor unit 12 includes a single tractor drive shaft 26 and a tractor guide shaft 27, a pair of symmetric tractors 28A and 28B, and a pair of symmetric tractor frames 29A. And 29B.

At both ends of the tractor guide shaft 27, a pair of tractor frames 29A and 29B are fixedly supported. The tractor drive shaft 26 is rotatably supported at both ends by a pair of tractor frames 29A and 29B.
A tractor drive gear 30 (FIG. 3) is fixed to at least one end of the tractor drive shaft 26 so as to rotate integrally therewith.

The tractors 28A and 28B have a tractor driven pulley (not shown) rotatably supported by a tractor guide shaft 27 and slidably in the axial direction, and a tractor drive shaft 26 which is integrally rotatable and axially slidable. A tractor belt 33 is wound around a tractor drive pulley (not shown) movably supported by a shaft, and is provided with a sheet holding lid 34.
The distance between the pair of tractors 28A and 28B can be adjusted according to the width of the continuous paper to be conveyed. Further, a plurality of pins 3 projecting from the entire outer circumference of the tractor belt 33 are provided.
5 can be engaged with holes (not shown) formed on both sides in the width direction of the continuous paper.

Reference numeral 36 denotes a sheet support that is fitted to at least one of the tractor drive shaft 26 and the tractor guide shaft 27 to support the continuous paper.

As shown in FIG. 4, the discharge unit 13 includes a discharge roller 3 provided integrally with a roller shaft 31 so as to rotate.
The sheet S (continuous paper or cut sheet) recorded by the recording head 18 is discharged out of the printer 10 by the rotation of the discharge roller 32. A discharge gear 40 (FIG. 3) is fixed to one end of the roller shaft 31 so as to rotate integrally therewith.

As shown in FIG. 1, the left side frame 16
A sheet conveying motor 37 and a gear train section 38 as a power transmission system are installed on one of the right side frame 17 and the right side frame 17, for example. As shown in FIG. 3, the gear train portion 38 includes a motor pinion 39,
It comprises a first reduction gear 41, a second reduction gear 42, a platen drive gear 43, transmission gears 44 and 40A, the tractor drive gear 30, and the discharge gear 40.

The motor pinion 39 is fixed to the rotating shaft of the sheet conveying motor 37 so as to rotate integrally therewith. The driving force of the motor pinion 39 is transmitted to the platen driving gear 43 via the first reduction gear 41 and the second reduction gear 42, and the platen 21 is rotated in the direction of arrow A. Further, the driving force of the motor pinion 39 is changed to the first reduction gear 41 and the second reduction gear 42.
The tractor drive pulley of the push tractor unit 12 rotates in the direction of arrow B through the transmission gear 44, and the tractor belt 33 of the push tractor unit 12 moves in the same direction (direction of arrow B).
To rotate. Further, the driving force of the motor pinion 39 is
It is transmitted to the discharge gear 40 via the transmission gear 40A via the reduction gear 41, the second reduction gear 42, and the platen drive gear 43, and the discharge roller 32 of the discharge unit 13 rotates in the direction of arrow C as shown in FIG. .

When the tractor belt 33 of the push tractor unit 12 rotates, the continuous paper is guided to the sheet guide 22 of the sheet transport mechanism 23 by the action of the pins 35 of the tractor belt 33. The sheet is fed in the direction of arrow D toward the platen 21 via a sheet conveying path 52 formed between the sheet feeding path 52 and the sheet feeding path 52. The continuous paper or cut paper on which characters and the like are recorded by the recording head 18 by rotation of the discharge roller 32 of the discharge unit 13 as described later is placed on the platen 21 of the sheet transport mechanism 23.
From the direction of arrow E. Thereby, the continuous paper or cut sheet is conveyed in the sub-scanning direction orthogonal to the main scanning direction of the carriage 19 described later.

By operating the release lever 46 shown in FIG. 3, the transmission gear 44 is configured to mesh with or be disengaged from the tractor drive gear 30 of the push tractor unit 12. When the transmission gear 44 is engaged with the tractor drive gear 30, the pinch roller 51 of the sheet conveying mechanism 23 separates from the platen 21 by the action of the cam 54 formed on the release shaft 53 shown in FIG. The continuous paper as the sheet S is supplied to the platen 21 and is conveyed.

By operating the release lever 46,
When the transmission gear 44 is disengaged from the tractor drive gear 30, the pinch roller 51 of the sheet conveying mechanism 23 rotates by contacting with the platen 21 by the action of the cam 54, and forms a sheet S from a sheet supply guide (not shown). Is supplied to the platen 21 via the sheet transport path 52 of the sheet transport mechanism 23 and is transported.

The carriage 19 shown in FIG. 1 is slidably inserted into a carriage guide shaft 24 and has a recording head 18 mounted thereon. Since the carriage guide shaft 24 is arranged in parallel with the platen 21, the carriage 19
Are the platen 21 and the carriage guide shaft 24
Are provided so as to be able to move (run) in the main scanning direction which coincides with the axial direction.

The carriage 19 is run by a carriage drive system including a carriage drive motor 55 (FIG. 3) and a timing belt 56 (FIG. 4). The carriage drive motor 55 is fixed to the base frame 14, and a carriage drive pulley (not shown) is attached to the carriage drive motor 55 so as to rotate integrally therewith. As shown in FIG. 1, a pulley support 47 is provided integrally with the base frame 14 at the lower end of the front part of the left side frame 16, and a carriage driven pulley (not shown) is mounted on the pulley support 47. Supported. A timing belt 56 is wound around the carriage driving pulley and the carriage driven pulley, and the carriage 19 is coupled to the timing belt 56.

Accordingly, the carriage 19 is guided by the carriage guide shaft 24 via the timing belt 56 by the forward or reverse rotation of the carriage drive motor 55, and travels leftward or rightward in the main scanning direction in FIG.

The pulley support 47 has a ribbon drive shaft 4
8 are provided. The ribbon drive shaft 48 moves the ink ribbon 50 in the ribbon cassette 49 (FIG. 4) mounted on the left side frame 16 and the right side frame 17. This ink ribbon 50 is used for the platen 21.
Is moved along the axial direction of the platen 21.

The recording head 18 has a large number of recording wires 6.
0 (FIG. 5 (B)), and the ink ribbon 50 is located in front of the recording wires 60 in the projecting direction. While traveling in the main scanning direction together with the carriage 19, the recording head 18 projects the recording wire 60 and strikes the ink ribbon 50, so that the ink of the ink ribbon 50 contacts the front peripheral surface of the platen 21 on the sheet S (continuous paper). Alternatively, an image including characters is recorded on the sheet S.

The recording operation by the recording head 18 is such that one line of recording is performed by the recording wire 60 of the recording head 18 while the carriage 19 travels leftward or rightward in the main scanning direction. When the sheet S is continuous paper, the platen 21, the push tractor unit 12, and the discharge unit 13 of the sheet transport mechanism 23 are provided. The platen 21, the pinch roller 51, and the discharge unit 13 convey the sheet S by a predetermined amount (normal line spacing), and these operations are repeated.

Reference numeral 57 shown in FIG. 4 is formed between the base frame 14 and the sheet guide frame 15 so as to open therefrom.
A bottom sheet supply port for supplying the sheet S into the inside.

Incidentally, as shown in FIG. 5, the recording head 18 has a driving unit 6 for causing the recording wire 60 to protrude.
1, a nose portion 62 for accommodating the recording wire 60 and guiding its operation, and a radiator 63 for cooling the driving portion 61.

The nose portion 62 and the radiator 63 are made of a material having a high thermal conductivity such as an aluminum alloy. The radiator 63 includes fins (not shown), and the radiator 63 and the fins are formed into a rectangular parallelepiped, or the front part 66 and the bottom part 67 are formed into various three-dimensional shapes such as a substantially columnar planar shape. In the present embodiment, the radiator 63 is formed in a rectangular parallelepiped shape including the fin. The nose part 62 is fixed to the front part 66 of the radiator 63 and is continuously provided. Further, the bottom surface portion 67 of the radiator 63 contacts the carriage 19 as described later, and is fixed to the carriage 19 using the mounting bolt 64, so that the recording head 18 is moved to the carriage 1.
9 is attached.

With the recording head 18 attached to the carriage 19, the top surface 68 and the back surface 69 of the radiator 63
Are located along the traveling direction α of the recording head 18 traveling by the carriage 19, and both side portions 70 </ b> A and 70 </ b> B of the radiator 63 are located perpendicular to the traveling direction α of the recording head 18. The fins (not shown) correspond to the top surface portion 68 and the side surface portions 70A and 70B of the radiator 63.
Is formed along the running direction α of the recording head 18.

The structure for attaching the recording head 18 to the carriage 19 is based on the front portion 6 of the radiator 63 of the recording head 18.
6 and the bottom portion 67 are positioned in contact with the carriage 19.

That is, the carriage 19 is formed by integrating a base 71 and a rising portion 72 which are orthogonal to each other. The radiator 63 of the recording head 18 has
In 0A and 70B, the first mounting member 74 is provided integrally at a location where the front part 66 and the bottom part 67 orthogonal to each other intersect with each other. These first mounting members 74 are positioned at an angle of approximately 45 degrees with respect to the front part 66 and the bottom part 67 of the radiator 63. One mounting bolt 64 is screwed into each of the first mounting members 74 in a direction perpendicular to the first mounting member 74, and the radiator 63 is
Are fixed to the carriage 19, and the recording head 18 is attached to the carriage 19.

At this time, the tightening force F 1 as the mounting force of the mounting bolt 64 acts on the first mounting member 74 in the vertical direction. The component Fx1 of the fastening force F1 is applied to the carriage 1
9 acts vertically on the rising portion 72 of the radiator 63 and the front portion 66 of the radiator 63 so that the front portion 66 of the radiator 63
9 is held in contact with the rising portion 72. At the same time, a component force Fy1 orthogonal to the component force Fx1 of the tightening force F1 acts on the base 71 of the carriage 19 and the bottom surface 67 of the radiator 63 in the vertical direction, and the bottom portion 67 of the radiator 63
9 is held in contact with the base 71.

Therefore, according to the above embodiment, the following effects and advantages can be obtained.

Since the recording head 18 is attached to the carriage 19 at the front portion 66 and the bottom portion 67 of the radiator 63 in contact with the rising portion 72 and the base portion 71 of the carriage 19, the radiator 63 and the carriage 19 Is larger than the case where only the bottom surface portion 67 of the radiator 63 contacts the carriage 19. Therefore, a sufficient heat transfer area for transferring the amount of heat from the radiator 63 of the recording head 18 to the carriage 19 can be sufficiently secured, so that heat can be satisfactorily radiated from the radiator 63 and the carriage 19 to the atmosphere. The heat radiating performance of the recording head 18 can be improved, including those that radiate heat through other members.

The front face 66 and the bottom face 67 of the radiator 63 of the recording head 18 that are orthogonal to each other are provided with a fastening force F1.
Since the first mounting member 74 is provided integrally with the radiator 63 so as to act simultaneously, the first mounting member 74 allows the recording head 1 to be mounted using only two mounting bolts 64.
8 can be attached to the carriage 19. As a result, the front part 66 and the bottom part 67 of the radiator 63 of the recording head 18 are brought into contact with the carriage 19 while securing the ease of attachment of the recording head 18 to the carriage 19,
The heat radiation performance of the recording head 18 can be improved.

[B] Second Embodiment (FIGS. 6 and 7) FIG. 6 is a side view showing a state in which a recording head is mounted on a carriage in a second embodiment of the recording apparatus according to the present invention. is there. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In the recording head 75 according to the second embodiment, as shown in FIG. 7A, a front part 66 and a bottom part 67 are formed on the side parts 70A and 70B of the radiator 76.
A first tapered surface 77 having an angle of approximately 45 degrees with respect to the front surface portion 66 and the bottom surface portion 67 is formed at the intersection of the first tapered surface 77 and the outer surface. A second tapered surface 7 is provided near the intersection of the base portion 71 and the rising portion 72 of the carriage 78.
9 are formed. The second tapered surface 79 is provided at an angle of approximately 90 degrees (or approximately 270 degrees) with respect to the first tapered surface 77 of the radiator 76 in a state where the radiator 76 is attached to the carriage 78.

On the other hand, a third tapered surface 83 and a fourth tapered surface 84 that are substantially orthogonal to each other are formed on a second mounting member 80 separate from the radiator 76 and the carriage 78 of the recording head 75. The third tapered surface 83 is provided so as to be able to contact the first tapered surface 77 of the radiator 76, and the fourth tapered surface 84 is provided so as to be able to contact the second tapered surface 79 of the carriage 78.

As shown in FIGS. 7B and 7C, the front part 66 and the bottom part 6 of the radiator 76 of the recording head 75 are provided.
7 is brought into contact with the rising portion 72 and the base portion 71 of the carriage 78, respectively, and then the third tapered surface 8 of the second mounting member 80 is contacted.
Third, the fourth tapered surface 84 is replaced with the first tapered surface 7 of the radiator 76.
7. Contact the second tapered surface 79, respectively. In this state, the mounting bolt 64 is screwed into the second mounting member 80 from a direction perpendicular to the base 71 of the carriage 78 to
Is fixed to the carriage 78, and the recording head 75 is attached to the carriage 78.

At this time, as shown in FIG. 6, the tightening force F2 as the mounting force of the mounting bolt 64 acts in a direction perpendicular to the base 71 of the carriage 78. This tightening force F2
Is applied to the third tapered surface 83 of the second mounting member 80.
And acts on the first tapered surface 77 of the radiator 76 in the vertical direction. At the same time, the component force Fy2 of the fastening force F2 (this component force Fy2
Is substantially orthogonal to the component force Fx2. ) Is the fourth tapered surface 84 of the second mounting member 80 and the second tapered surface 7 of the carriage 78.
Acts on 9 vertically. These component forces Fx2 and Fy
2, the front part 66 of the radiator 76 is held in contact with the rising part 72 of the carriage 78, and the bottom part 67 of the radiator 76
Is held in contact with the base 71 of the carriage 78, and the recording head 75 is attached to the carriage 78.

Here, the second mounting members 80 are disposed one by one on the side surfaces 70A and 70B of the radiator 76, and are fixed to the carriage 78 by the mounting bolts 64, respectively.

Therefore, also in the second embodiment, the front portion 66 of the radiator 76 in the recording head 75,
The bottom part 67 is the rising part 72 and the base 71 of the carriage 78.
And the recording head 75 is attached to the carriage 78 only by the two attachment bolts 64 using the second attachment member 80. Therefore, the effects of the first embodiment and the effects similar to those of the first embodiment are provided. To play.

[C] Third Embodiment (FIG. 8) FIG. 8A is a side view showing a recording head attached to a carriage in a third embodiment of the recording apparatus according to the present invention. FIG. 8B is a perspective view showing the carriage of FIG. 8A together with a leaf spring member. In the third embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In the recording head 85 of the third embodiment, a flange 87 extending outward is formed on both sides 70A and 70B of the radiator 86 so as to be flush with the bottom 67. The carriage 88 includes the recording head 8.
In the mounting state of No. 5, a leaf spring member 90 is fitted in a lower portion 82 of an opening 89 through which the nose portion 62 of the recording head 85 is inserted. This leaf spring member 90 has a U-shape in side view,
A spring portion 91 is formed so as to bulge on the front surface.

When the recording head 85 is placed on the carriage 88 by bringing the front portion 66 and the bottom portion 67 of the radiator 86 into contact with the rising portion 72 and the base portion 71 of the carriage 88, respectively, the nose portion 62 of the recording head 85 The spring portion 91 of the leaf spring member 90 is interposed between the first portion and the rising portion 72 of the carriage 88. The restoring force P3 of the spring portion 91 acts on the nose portion 62 in a direction perpendicular to the rising portion 72 of the carriage 88, and the front portion 6 of the radiator 86 in the recording head 85.
6 is held in contact with the rising portion 72 of the carriage 88.

In this state, the flange 87 of the radiator 86
The mounting bolt 64 is screwed into. At this time, the tightening force F3 of the mounting bolt 64 acts on the base 71 of the carriage 88 in the vertical direction, so that the bottom part 67 of the radiator 86 and the base 71 of the carriage 88 come into contact, and the radiator 86 The recording head 85 is fixed to the carriage 8
8 attached.

As described above, also in the third embodiment, the front part 66 and the bottom part 67 of the radiator 86 in the recording head 85 are held in contact with the rising part 72 and the base 71 of the carriage 88, respectively. As a result, in addition to the same effects as the effects of the first embodiment, the following effects are obtained.

Although the leaf spring member 90 is interposed between the nose portion 62 of the recording head 85 and the rising portion 72 of the carriage 88, the recording head 85 is mounted on the carriage 88 using only two mounting bolts 64. Therefore, it is possible to prevent the attachment of the recording head 85 to the carriage 88 from being reduced.

[D] Fourth Embodiment (FIG. 9) FIGS. 9A and 9B show a fourth embodiment of the recording apparatus according to the present invention.
FIGS. 3A and 3B show a mounting state of a recording head to a carriage according to the first embodiment, in which FIG.
FIG. 9C is a perspective view showing the carriage of FIGS. 9A and 9B together with a leaf spring member. In the fourth embodiment, the same parts as those in the first and third embodiments are denoted by the same reference numerals, and description thereof will be omitted.

In the fourth embodiment, the recording head 8
5 is provided with a flange portion 87, and both side portions 94 and 9 forming an opening 89 of a carriage 88.
5, a leaf spring member 92 is fitted to one side portion 94. This leaf spring member 92 has a U-shape in side view,
A spring portion 93 is formed so as to bulge on the central surface.

The bottom part 67 of the radiator 86 is
When the recording head 85 is placed on the carriage 88 by contacting the base 71 of the recording head 85, the spring of the leaf spring member 92 is placed between the nose portion 62 of the recording head 85 and the side portion 94 of the rising portion 72 of the carriage 88. The part 93 is interposed. The restoring force P4 of the spring portion 93 is applied to the nose portion 6 of the recording head 85.
2, the other side surface 96B of the nose portion 62 is held in contact with the side portion 95 of the rising portion 72 of the carriage 88.

In this state, the mounting bolt 64 is screwed into the flange portion 87 of the recording head 85, and the mounting bolt 6
4 acts on the base 71 of the carriage 88 in the vertical direction, and the bottom surface 67 of the radiator 86 and the carriage 88
And the recording head 85 is attached to the carriage 88.

Therefore, also in the fourth embodiment, the bottom portion 67 of the radiator 86 in the recording head 85,
Since the other side surface 96B of the nose portion 62 is held in contact with the base portion 71 of the radiator 86 and the side portion 95 of the rising portion 72, respectively, the same effects as those of the first embodiment can be obtained.

Although the leaf spring member 92 is interposed between the nose portion 62 of the recording head 85 and the side portion 94 of the rising portion 72 of the carriage 88, the recording head 85 is formed using only two mounting bolts 64. Since it is attached to the carriage 88, the same effects as those of the third embodiment can be obtained.

[E] Fifth Embodiment (FIG. 10) FIGS. 10 (A) and 10 (B) show the mounting state of the recording head to the carriage in the fifth embodiment of the recording apparatus according to the present invention. 10A is a front view, FIG. 10B is a side view, and FIG. 10C is a perspective view showing the carriage of FIGS. 10A and 10B together with a leaf spring member. In the fifth embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

In the recording head 97 of the fifth embodiment, flange portions 99 and 100 are provided on both sides of the nose portion 62 on the front portion 66 of the radiator 98. Also, the carriage 88 has a side portion 94 from the lower portion 82 of the opening 89.
The leaf spring member 101 is fitted in a region extending over the area. This leaf spring member 101 is configured by connecting an L-shaped front surface 102 and a rear surface 103 at a center surface 104, and has a first spring portion 105 on the front surface 102 and a second spring portion 106 on the center surface 104. Are formed to bulge out.

The first spring portion 105 functions in the same manner as the spring portion 91 in the leaf spring member 90 (FIG. 8) of the third embodiment, and the second spring portion 106 functions as the plate spring of the fourth embodiment. It functions similarly to the spring portion 93 in the spring member 92 (FIG. 9).

The front portion 66 of the radiator 98 is
Of the radiator 98,
When the carriage 100 is brought into contact with the top surfaces of the side parts 94 and 95 of the carriage 88, the first spring of the leaf spring member 101 is located between the nose part 62 of the recording head 97 and the lower part 82 of the rising part 72 of the carriage 88. A second portion 105 of the leaf spring member 101 is provided between the nose portion 62 of the recording head 97 and the side portion 94 of the rising portion 72 of the carriage 88.
A spring portion 106 is interposed. In this state, the mounting bolt 64 is screwed into the flanges 99 and 100 of the radiator 98, and the recording head 97 is mounted on the carriage 88 by the tightening force F5 of the mounting bolt 64 in the direction perpendicular to the base 71 of the carriage 88. .

At this time, the restoring force P51 of the first spring portion 105 of the leaf spring member 101 is applied to the rising portion 7 of the carriage 88.
2, the front portion 66 of the radiator 98 in the recording head 97 is moved downward by the nose portion 62 so that the lower portion 82 and both side portions 94 of the rising portion 72 of the carriage 88.
And 95 are held in contact. At the same time, the leaf spring member 101
Of the second spring portion 106 of the recording head 97
The other side surface 96B of the nose portion 62 is held in contact with the side portion 95 of the rising portion 72 of the carriage 88.

Therefore, also in the fifth embodiment, the front portion 66 of the radiator 98 in the recording head 97,
The other side surface 96 </ b> B of the nose portion 62 is connected to the rising portion 72 (lower portion 82 and both side portions 94 and 9) of the carriage 88.
5) Since the side portions 95 are held in contact with each other, the same effects as those of the first embodiment can be obtained.

Although the plate spring member 101 is interposed between the radiator 98 and the nose portion 62 of the recording head 97 and the rising portion 72 of the carriage 88, the recording head 97 is formed using only two mounting bolts 64. Are attached to the carriage 88, the same effects as those of the third embodiment can be obtained.

[F] Sixth Embodiment (FIG. 11) FIG. 11 shows a recording head mounted on a carriage in a sixth embodiment of the recording apparatus according to the present invention.
(A) is a front view, (B) is a side view. In the sixth embodiment, the same parts as those in the first and fourth embodiments are denoted by the same reference numerals, and the description is omitted.

The recording head 107 of the sixth embodiment
Now, the nose portion 62 in the front portion 66 of the radiator 108
Flange portions 109 and 110 are protrudingly provided on both sides. On the lower surfaces of the flanges 109 and 110, a tapered surface 111 is formed which is inclined downward in the direction in which the nose 62 protrudes.

A tapered surface 113 that is inclined in the same manner as the tapered surface 111 is formed on the top surface of the side portions 94 and 95 in the rising portion 72 of the carriage 112. Further, the side portion 94 of the rising portion 72 of the carriage 112
A leaf spring member 92 is fitted between the recording head 107 and the nose portion 62 of the recording head 107.

The front part 66 of the radiator 108 is moved to the carriage 1
12 and the tapered surface 111 of the flanges 109 and 110 of the radiator 108 is brought into contact with the tapered surface 113 of the side portions 94 and 95 of the carriage 112, and the mounting bolt 64 is attached to the flanges 109 and 110. , And the recording head 107 is attached to the carriage 112.

At this time, the tightening force F6 of the mounting bolt 64 is
Is moved from the flanges 109 and 110 of the recording head 107 to the side portions 94 and 95 of the carriage 112.
Acts on the base 71 in the vertical direction. This tightening force F6
Is acting on the tapered surface 111 and the tapered surface 113 in the vertical direction, and the reaction force N of the component force perpendicular to the front portion 66 of the radiator 108 at the component force Fn6,
The front part 66 of the radiator 108 is held in contact with the rising part 72 of the carriage 112.

At the same time, the spring portion 93 of the leaf spring member 92 is interposed between the nose portion 62 of the recording head 107 and the side portion 94 of the rising portion 72 of the carriage 112, and the spring portion 93 of the leaf spring member 92 The restoring force P6 acts on one side surface 96A of the nose portion 62 of the carriage 112 in the vertical direction. Thus, the other side surface 96B of the nose portion 62 of the carriage 112 is held in contact with the side portion 95 of the rising portion 72 of the carriage 112.

Therefore, also in the sixth embodiment, the front portion 6 of the radiator 108 in the recording head 107
6. The other side 96B of the nose portion 62
The first embodiment has the same effect as that of the first embodiment, because it is held in contact with the rising portion 72 and the side portion 95.

Although the leaf spring member 92 is interposed between the nose portion 62 of the recording head 107 and the side portion 94 of the rising portion 72 of the carriage 112, the recording head 107 is formed using only two mounting bolts 64. Is carriage 1
12, the same effects as those of the third embodiment can be obtained.

[G] Seventh Embodiment (FIG. 12) FIG. 12 shows a recording apparatus according to a seventh embodiment of the present invention in which a recording head is mounted on a carriage.
(A) is a front view, (B) is a side view. In the seventh embodiment, the same parts as those in the first and fifth embodiments are denoted by the same reference numerals, and description thereof will be omitted.

In the recording head 97 according to the seventh embodiment, flanges 99 and 100 are protruded from a radiator 98, and a leaf spring member 101 is fitted to a rising portion 72 of a carriage 88. Then, with the bottom part 67 of the radiator 98 in contact with the base 71 of the carriage 88,
Attachment bolt 64 to flange portions 99 and 100 of recording head 97
Is screwed in, and the recording head 97 is attached to the carriage 88.

At this time, the tightening force F7 of the mounting bolt 64 acts vertically on the base 71 of the carriage 88,
The bottom surface 67 of the radiator 98 is held in contact with the base 71 of the carriage 88.

The restoring force P71 of the first spring portion 105 of the plate spring member 101 interposed between the nose portion 62 of the recording head 97 and the lower portion 82 of the rising portion 72 of the carriage 88 causes the rising portion of the carriage 88 to rise. Acts on the nose 62 in a direction perpendicular to 72. As a result, the front portion 66 of the radiator 98 of the recording head 97 is held in contact with the lower portion 82 and the side portions 94 and 95 of the rising portion 72 of the carriage 88.

Further, the restoring force P72 of the second spring portion 106 of the leaf spring member 101 interposed between the nose portion 62 of the recording head 97 and the side portion 94 of the rising portion 72 of the carriage 88 causes the restoring force P72 of the recording head 97 to increase. It acts vertically on one side surface 96A of the nose portion 62. As a result, the other side surface 96B of the nose portion 62 is held in contact with the side portion 95 of the rising portion 72 of the carriage 88.

Therefore, according to the seventh embodiment,
The bottom part 67 of the radiator 98 in the recording head 97 is held in contact with the base 71 of the carriage 88, and the recording head 97
The front portion 66 of the radiator 98 is held in contact with the rising portion 72 (lower portion 82 and both side portions 94 and 95) of the carriage 88, and the other side surface 96B of the nose portion 62 of the recording head 97 is on the side of the rising portion 72 of the carriage 88. Part 95
, The same effect as the effect of the first embodiment can be obtained.

Although the plate spring member 101 is interposed between the radiator 98 and the nose portion 62 of the recording head 97 and the rising portion 72 of the carriage 88, the recording head 97 is formed by using only two mounting bolts 64. Is attached to the carriage 88, so that the same effects as those of the third embodiment can be obtained.

[H] Eighth Embodiment (FIG. 13) FIG. 13 is a side view showing a recording head mounted on a carriage in an eighth embodiment of the recording apparatus according to the present invention. In the eighth embodiment, the same parts as those in the first and third embodiments are denoted by the same reference numerals, and the description is omitted.

In the eighth embodiment, the recording head 8
5 is attached to the carriage 88 using the attachment bolts 64, the bottom 67 of the radiator 86 and the carriage 8
8 and at least one between the front portion 66 of the radiator 86 and the rising portion 72 of the carriage 88 (in the present embodiment, the front portion 66 of the radiator 86 and the carriage 8).
8 (between the rising portions 72), a silicon sheet 114 is provided as an intervening member. This silicon sheet 11
Reference numeral 4 denotes a member having heat conductivity and flexibility, which can be deformed when the recording head 85 and the carriage 88 are attached.

Also in the eighth embodiment, the bottom surface 67 of the radiator 86 and the base 71 of the carriage 88 are held in contact with each other using only the mounting bolts 64, and the front portion 66 of the radiator 86 and the Since the rising portion 72 is held in contact with the silicon sheet 114 having heat conductivity, the same effect as the effect of the first embodiment and the effect of the third embodiment can be obtained. The following effects are obtained.

The front part 66 of the radiator 86 and the carriage 8
Since the silicon sheet 114 having heat conductivity and flexibility is disposed between the rising portion 72 and the rising portion 72, the recording head 85 can be positioned on the carriage 88 by deforming the silicon sheet 114. The attachment of the 85 to the carriage 88 can be further facilitated.

[I] Ninth Embodiment (FIG. 14) FIG. 14 shows a state in which a recording head is mounted on a carriage in a ninth embodiment of the recording apparatus according to the present invention.
(A) is a front view, (B) is a side view. In the ninth embodiment, the same parts as those in the first, fourth, and fifth embodiments are denoted by the same reference numerals, and description thereof will be omitted.

In the ninth embodiment, the recording head 9
7, the recording head 97 is fixed to the side portions 94 and 95 of the carriage 88 with the use of the mounting bolts 64.
8 attached. At this time, the spring portion 93 of the leaf spring member 92 is placed between the nose portion 62 of the recording head 97 and the side portion 94 of the rising portion 72 of the carriage 88.
The nose portion 62 and the side portion 95 of the rising portion 72 are held in contact with each other.

In the ninth embodiment, the recording head 9
The heat from the radiator 98 of No. 7 is transmitted to the carriage 88 via the contact surface between the nose portion 62 and the side portion 95, and is radiated by the radiator 98 and the carriage 88. Also in the ninth embodiment, the recording head 97 is easily mounted on the carriage 88 using only two mounting bolts 64.

Although the present invention has been described based on the above embodiment, the present invention is not limited to this.

[0108]

According to the recording head mounting structure of the recording apparatus according to the first aspect and the recording apparatus according to the sixth aspect, the recording head is positioned while being in contact with the carriage in at least two places, and the carriage is positioned. , The heat radiation performance of the recording head can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a printer main body of a dot impact printer to which a first embodiment of a recording apparatus according to the present invention is applied.

FIG. 2 is a plan view showing the printer main body of FIG.

FIG. 3 is a right side view showing the printer main body of FIG. 1;

FIG. 4 is a side view showing the printer main body of FIG. 1;

FIGS. 5A and 5B show a mounting state of the recording head of FIG. 1 to a carriage, wherein FIG. 5A is a side view and FIG.

FIG. 6 is a side view showing a state in which a recording head is mounted on a carriage in a second embodiment of the recording apparatus according to the present invention.

FIG. 7 is a process diagram illustrating a process of attaching the recording head and the carriage in FIG. 6;

FIG. 8A is a side view showing a state in which a recording head is mounted on a carriage in a third embodiment of the recording apparatus according to the present invention, and FIG. 8B is a side view showing the carriage in FIG. FIG. 4 is a perspective view showing the same together with a leaf spring member.

FIGS. 9A and 9B show a state in which a recording head is mounted on a carriage in a fourth embodiment of the recording apparatus according to the present invention, wherein FIG. 9A is a front view, and FIG. FIG. 9C is a perspective view showing the carriage of FIGS. 9A and 9B together with a leaf spring member.

FIGS. 10A and 10B show a state in which a recording head is mounted on a carriage in a fifth embodiment of the recording apparatus according to the present invention, wherein FIG. 10A is a front view, and FIG. FIG. 10C is a perspective view showing the carriage of FIGS. 10A and 10B together with a leaf spring member.

FIG. 11 shows a state in which a recording head is attached to a carriage in a sixth embodiment of the recording apparatus according to the present invention;
(A) is a front view, (B) is a side view.

FIG. 12 shows a state in which a recording head is mounted on a carriage in a seventh embodiment of the recording apparatus according to the present invention;
(A) is a front view, (B) is a side view.

FIG. 13 is a side view showing a state in which a recording head is mounted on a carriage in an eighth embodiment of the recording apparatus according to the present invention.

FIG. 14 shows a state in which a recording head is mounted on a carriage in a ninth embodiment of the recording apparatus according to the present invention;
(A) is a front view, (B) is a side view.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Printer (recording apparatus) 18 Recording head 19 Carriage 21 Platen 60 Recording wire 62 Nose part 63 Radiator 64 Mounting bolt 66 Front part of radiator 67 Bottom part of radiator 71 Base part of carriage 72 Rise part of carriage 74 1st mounting Member 75 Recording head 76 Radiator 78 Carriage 80 Second mounting member 85 Recording head 86 Radiator 87 Radiator flange 88 Carriage 90 Leaf spring member 91 Spring part 92 Leaf spring member 93 Spring part 96B Other side of carriage 97 Recording head 98 radiator 101 leaf spring member 105 first spring portion 106 second spring portion 107 recording head 108 radiator 114 silicon sheet (intervening member) S sheet F1, F2, F3, F4, F5, F6, F7 Tightening force P3, P4, P51, P52, P6, P 1, P72
Resilience

Claims (10)

[Claims] 1. A recording head mounting structure of a recording apparatus for mounting a recording head having a recording wire and a radiator on a carriage, wherein the recording head is positioned while being in contact with the carriage at at least two places, and attached to the carriage. A recording head mounting structure for a recording apparatus. 2. A nose portion is connected to the radiator, and at least two portions of a bottom portion of the radiator, a front portion of the radiator, and the nose portion are configured to contact a carriage. A recording head mounting structure for a recording apparatus according to claim 1. 3. An attachment member is provided on at least two contact surfaces of the recording head which are in contact with the carriage so as to simultaneously apply an attachment force to at least two contact surfaces of the recording head. Or a recording head mounting structure for a recording apparatus according to item 2. 4. A nose portion is connected to the radiator, a spring member is interposed between the nose portion and the carriage, and a restoring force of the spring member causes the nose portion or the front portion of the radiator to move. 3. The recording head mounting structure of a recording apparatus according to claim 1, wherein the recording head is configured to be held in contact with the carriage. 5. The printing apparatus according to claim 1, wherein an intervening member having heat conductivity and flexibility is arranged on at least one contact surface between the recording head and the carriage. Recording head mounting structure of the recording device. 6. A printing head provided with a recording wire and a radiator is mounted on a carriage that can travel along a platen, and the recording wire protrudes toward the platen, thereby causing the platen and the recording head to move. A recording apparatus for recording an image on a sheet conveyed between the recording head and the carriage, wherein the recording head is positioned while being in contact with the carriage at at least two places, and attached to the carriage. 7. A nose portion is connected to the radiator, and at least two of a bottom portion of the radiator, a front portion of the radiator, and the nose portion are configured to contact a carriage. The recording apparatus according to claim 6, wherein 8. A mounting member is provided on at least two contact surface portions of the recording head which are in contact with the carriage so as to simultaneously apply a mounting force to at least two contact surface portions orthogonal to each other. Or the recording device according to 7. 9. A nose portion is connected to the radiator, a spring member is interposed between the nose portion and the carriage, and a restoring force of the spring member causes the nose portion or the front portion of the radiator to move. The recording apparatus according to claim 6, wherein the recording apparatus is configured to be held in contact with the carriage. 10. An intervening member having heat conductivity and flexibility is arranged on at least one contact surface between the recording head and the carriage.
The recording device according to any one of the above.