JP2003266877A - Recorder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recorder which can improve a cooling efficiency by a simple constitution without setting a cooling fan or the like. <P>SOLUTION: Heating bodies 51 and 51 are set along a scanning direction of a carriage 19, and a blower member 56 is set which can send the air to the heating bodies 51 and 52 through an integral movement with the carriage 19 when the carriage 19 scans. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a recording apparatus provided with a heating element such as a printed circuit board along the scanning direction of a carriage.

[0002]

2. Description of the Related Art Generally, there is known a dot impact printer in which a recording head mounted on a carriage is provided with a plurality of recording wires, and an ejecting operation of these recording wires records an image on a sheet via an ink ribbon. .

In this type of dot impact printer,
A printed circuit board equipped with a power supply board, driver IC, etc.
It is common that the printer is surrounded by a shield plate, and the shield plate is provided inside the printer body.

[0004]

However, when the printed board on which the power supply board, the driver IC, etc. are mounted is surrounded by the shield plate, the flow of air is small in the vicinity thereof, so that the printed board and the like are insufficiently cooled. There is a problem of becoming.

On the other hand, in order to cause air flow,
Providing a cooling fan is proposed, but this increases the cost.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problems of the conventional technique and to provide a recording apparatus capable of improving cooling efficiency with a simple structure without providing a cooling fan or the like. It is in.

[0007]

According to a first aspect of the present invention, a heating element is provided along the scanning direction of the carriage, and when the carriage is scanned, the heating element can move integrally with the carriage and blow air to the heating element. A blower member is provided.

According to a second aspect of the present invention, in the first aspect, the blower member is provided with a blower surface capable of blowing air to the heating element.

According to a third aspect of the present invention, a recording head mounted on a carriage is provided with a plurality of recording wires, and an ejecting operation of these recording wires records an image on a sheet via an ink ribbon. A heating element is provided behind the carriage, and a blower member that moves integrally with the carriage during scanning of the carriage and is capable of blowing air inside an enclosure member that surrounds the heating element is provided.

According to a fourth aspect of the present invention, in the third aspect, the blower member has a blower surface capable of blowing air to the heating element.

According to a fifth aspect of the present invention, in the third or fourth aspect, the heating element is a control board surrounded by a shield plate, and a ventilation hole for air blown by the ventilation member to the shield plate. Is formed.

According to a sixth aspect of the present invention, in any one of the first to fifth aspects, the blower member is formed integrally with the carriage.

According to a seventh aspect of the present invention, in the sixth aspect, the blower member is provided with a blower surface capable of blowing upward when the carriage scans.

According to an eighth aspect of the present invention, in the sixth aspect, the blower member has a pair of blower surfaces capable of blowing upward regardless of which direction the carriage is reciprocated. It is characterized by having.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side sectional view showing a printer body of a dot impact printer to which an embodiment of a recording apparatus according to the present invention is applied.

A printer 1 as a recording apparatus shown in this figure
Reference numeral 0 denotes a dot impact printer that prints an image including characters by hitting a large number of recording wires of the recording head 18 on a sheet via an ink ribbon (not shown) to record dots. The printer 10 includes a printer body 11 as a recording apparatus body, and a printer body 11
Upper tractor unit 12 that covers the upper and lower sides of the push tractor unit 12 mounted on the printer body 11 and the printer body 11, respectively.
1A and a lower case 11B, and a sheet supply guide 38 that is installed on the front side of the printer body 11 and guides the cut sheet K.

The sheet includes the cut sheet K cut into a predetermined length and a continuous sheet in which a plurality of sheets are connected. The cut sheet K includes, for example, cut sheets (including cut copy paper) or cut films, and the continuous sheet includes continuous paper (including continuous copy paper).

As shown in FIG. 2, the printer main body 11 includes a base frame 14, a main frame 15, a left side frame 16 and a right side frame 17 as main body frames, a recording head 18 and a carriage 19 as recording mechanism portions. A flat platen 20 as a sheet transport mechanism, a sheet guide 25, a first transport roller 21, and a first transport roller 21.
A second transport roller (not shown) facing the transport roller 21,
The third transport roller 23 and the fourth transport roller 24 facing the third transport roller 23 are provided. Further, 42 is a stationary type ribbon cartridge, and an ink ribbon is accommodated in the ribbon cartridge 42.

FIG. 3 shows a state in which the ribbon cartridge 42 is removed, and FIG. 4 shows a vertical section including the recording head 18.

Base frame 14 and main frame 1
The left side frame 16 and the right side frame 17 are erected and fixed to substantially both ends of the frame 5. A carriage guide plate 26 and a carriage shaft 27 are bridged between the left side frame 16 and the right side frame 17 with a predetermined distance in the up-down front-rear direction. The carriage shaft 27 is rotatably supported by the left side frame 16 and the right side frame 17. Left side frame 16 and right side frame 1
A flat platen 20 is provided so as to span between 7 and a sheet guide 25 is fixedly provided.

The push tractor unit 12 supplies a continuous sheet (for example, continuous paper) to the sheet conveying mechanism portion having the platen 20, and has a pair of left and right tractors 28. These tractors 28 include a tractor drive pulley 29A that is rotatably integrated with a tractor drive shaft 29 and axially slidably supported, and a tractor guide shaft 3
The tractor belt 31 is wound around a tractor driven pulley (not shown) which is rotatably supported at 0 and slidable in the axial direction, and is provided with a sheet pressing lid 32. The distance between the pair of tractors 28 can be adjusted according to the width dimension of the continuous sheet (continuous paper) to be conveyed. In addition, a plurality of pins 33 projectingly provided on the entire outer circumference of the tractor belt 31.
Are holes formed on both sides of the continuous sheet in the width direction (not shown)
Can be engaged with. The sheet conveying mechanism section including the platen 20 is configured such that the first conveying roller 21 is attached to the platen 20.
Further, the second transport roller (not shown) is disposed on the front side of the printer body 11, and the third transport roller 23 and the fourth transport roller 24 are disposed on the rear side of the printer body 11, respectively. Furthermore, the first transport roller 21 and the second transport roller (not shown), and the third transport roller 23 and the fourth transport roller 2
4 are arranged in the vertical direction to form a pair.

Of these, the first transport roller 21 and the third transport roller 23 are arranged below the sheet guide 25 together with the platen 20, and the second transport roller (not shown) and the fourth transport roller 24 are the sheet guide 25. It is located above.

The first carrying roller 21, the second carrying roller (not shown), the third carrying roller 23 and the fourth carrying roller 24.
Is rotationally driven in the clockwise direction (CW) or the counterclockwise direction (CCW) in the figure by the drive train wheel unit 34 shown in FIG. Further, the tractor belt 31 of the push tractor unit 12 is similarly driven in the counterclockwise direction by the drive wheel train portion 34.

The drive wheel train 34 is installed on one of the left side frame 16 and the right side frame 17, for example, the right side frame 17. The drive train wheel unit 34 includes a motor pinion 36 that is fixed to the drive shaft of a sheet supply motor 35 that can rotate normally or reversely so as to rotate integrally. The driving force from the motor pinion 36 is passed through the drive train wheel portion 34 such as a winding transmission mechanism or a gear mechanism to drive the first transport roller 2
1, a second transport roller (not shown), a third transport roller 23,
Fourth transport roller 24 and push tractor unit 12
Can be transmitted to.

The disengagement gear 34 of the drive train train 34
A is a gear that switches the driving force from the motor pinion 36 to either the power transmission to the tractor belt 31 of the push tractor unit 12 or the non-power transmission.

The cut sheet K such as cut paper or copy paper is
After being manually supplied from the front side of the printer body 11, the first
The clockwise rotation of the transport roller 21 and the third transport roller 23, and the counterclockwise rotation of the second transport roller (not shown) and the fourth transport roller 24 cause the arrow A from the front to the rear of the printer body 11. Is conveyed in the direction. Also,
The cut sheet K is rotated in the counterclockwise direction of the first transport roller 21 and the third transport roller 23, and the clockwise rotation of the second transport roller (not shown) and the fourth transport roller 24 in the printer main body 11. It is conveyed in the direction of arrow B from the rear to the front.

A continuous sheet such as continuous paper is supplied from the rear side of the printer main body 11 in the direction of the arrow B by the push tractor unit 12, and then the first transport roller 21 and the second transport roller (not shown). , The third transport roller 23
Also, the printer body 11 is transported from the rear side to the front side or from the front side to the rear side (direction of arrow B or A) by the fourth transport roller 24.

As a result, the cut sheet K and the continuous sheet are conveyed in the sub scanning direction of the carriage 19 which is orthogonal to the main scanning direction described later.

As shown in FIG. 4, the carriage 19 is slidably inserted into a carriage shaft 27 and
The recording head 18 is mounted.

Since the carriage shaft 27 is arranged in parallel with the platen 20, the carriage 19 is provided so as to be capable of traveling (scanning) in the main scanning direction which coincides with the axial directions of the platen 20 and the carriage shaft 27. This carriage 1
Reference numeral 9 is coupled to a timing belt (not shown) that is reciprocally moved by forward or reverse rotation of a carriage drive motor (not shown). Therefore, the carriage 19 is guided by the carriage shaft 27 through the timing belt by the forward or reverse rotation of the carriage drive motor and is scanned leftward or rightward in FIG. 2 or 3 in the main scanning direction.

Here, the carriage drive motor is composed of, for example, a stepping motor together with the sheet supply motor.

On the carriage 19, as shown in FIG.
A ribbon mask holder 41 that protects a sheet (cut sheet or continuous sheet) conveyed in contact with the upper peripheral surface of the platen 20 from the ink ribbon in the stationary type ribbon cartridge 42 is installed. The ink ribbon in the ribbon cartridge 42 is the ribbon drive shaft 4
3 is configured to be movable in front of the recording wire of the recording head 18 in the same direction as the main scanning direction.

The recording head 18 is provided with a large number of recording wires (not shown), and the ink ribbon is positioned in front of the recording wires in the protruding direction as described above. Recording head 1
Reference numeral 8 denotes a recording wire projected and hitting the ink ribbon while being scanned in the main scanning direction together with the carriage 19.
The ink of the ink ribbon is attached to a sheet (cut sheet K or continuous sheet) conveyed between the platen 20 and the recording head 18, and an image including characters is recorded on this sheet.

In the recording operation by the recording head 18, one line sentence is recorded by the recording wire of the recording head 18 while the carriage 19 is scanned leftward or rightward in the main scanning direction, and each time this one line sentence is recorded. In addition, when the sheet is the cut sheet K, the sheet transport mechanism section (the platen 20, the first transport roller 21, the second transport roller (not shown), the third transport roller 23, and the fourth transport roller 24)
However, when the sheet is a continuous sheet, the sheet transport mechanism unit and the push tractor unit 12 transport the sheet for a predetermined length (usually a space between rows), and these operations are repeated.

FIG. 5 shows an assembled state of the control board of the printer 10. The control board includes a printed board 51 and a power supply board 52. These substrates 51, 5
2 is a main frame 1 that functions as a shield plate
5, a plurality of screws 54 are fixed to the back surface 15A, and the upper surfaces of the substrates 51 and 52 are surrounded by a carriage guide plate 26 that functions as a shield plate as shown in FIG. The side is surrounded by a bottom plate 55 that also has a U-shaped cross section and also functions as a shield plate, and the back side of each substrate 51, 52 is surrounded by a shield plate 53 as shown in FIG. Each component of the shield plate is provided upright behind the carriage 19.

FIG. 6 is a view showing the main frame 15 side from the carriage 19 side. A plurality of slits (blowing holes) 55A are formed on the upper surface of the above-mentioned bottom plate 55 that is bent in a U-shaped cross section, and the space 5 inside the bottom plate 55 is formed.
A blade (blower member) 56 is inserted in 5B, and the blade 56 is, as shown in FIG.
It is integrally formed on the back of No. 3.

In the present embodiment, as shown in FIG. 7, when the carriage 19 is guided by the carriage shaft 27 and is driven in the scanning direction (arrow A or B direction), the carriage 1
The blade 56 integrally formed on the back of the blade 9 moves integrally with the carriage 19 in the space 55B inside the bottom plate 55, and the air near the blade 56 is fluidized by the action of the blade 56. . For example, when the carriage 19 is driven in the direction of arrow A, air is fluidized as shown by arrow C, and when it is driven in the direction of arrow B, air is fluidized as shown by arrow D.

That is, a pair of air blowing surfaces 56A and 56B are formed on the blade 56, and the air blowing surfaces 56A and 56B are formed.
B is a control board 51, 5 surrounded by a shield plate in each case according to the reciprocating movement of the carriage 19.
It is formed so as to be able to blow upward toward 2.

FIG. 8 is a sectional view of the control board portion.

The air fluidized by the action of the blades 56 described above goes toward the substrates 51, 52 through the slits 55A on the upper surface of the bottom plate 55, as shown by the broken line arrows in FIG. After the components are cooled, they are discharged to the outside through the gap between the shield plate 53 and the carriage guide plate 26. This fluidization of air is induced when the carriage 19 is driven.

In the present embodiment, even if the power supply board 52 and the printed board 51 on which the driver IC and the like are mounted are surrounded by the shield plate, by the action of the blades 56 described above,
Since the air is blown toward the substrates 51 and 52, it is possible to sufficiently cool each substrate without providing a cooling fan or the like.

Referring to FIG. 7, a fixed portion 61 and a slider 62 are provided on the upper portion of the carriage 19, and a knob portion 62A is integrally formed on the lower end of the slider 62. When assembling this carriage 19, first,
The carriage shaft 27 is passed through the hollow portion of the holder 63.
Then, as shown in FIG.
The bent portion 26A of the carriage guide plate 26 is sandwiched between and. In this case, while gripping the carriage shaft 27, the knob portion 62A of the slider 62 is pushed in the direction of arrow E,
Spread the upper end of the slider 62 in the direction of the arrow F,
The bent portion 26A is sandwiched between the slider 62 and the slider 62.

According to this, since the knob 62A is provided at the lower end of the slider 62, the lower end of the slider 62 is indicated by the arrow E.
It can be easily pushed in the direction and the assembly work can be facilitated.

The present invention has been described above based on the embodiment, but the present invention is not limited to this. For example, the blowing member is not limited to the blade 56, and may be any member that can move integrally with the carriage 19 and blow air.

[0046]

As described above, according to the present invention, since the air-blowing member capable of moving integrally with the carriage during the scanning of the carriage to blow air to the heating element is provided, a cooling fan or the like is not provided.
Cooling efficiency can be improved with a simple configuration.

[Brief description of drawings]

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

FIG. 2 is a perspective view showing the printer body of FIG.

FIG. 3 is a perspective view showing a state in which a ribbon cartridge is removed from the one shown in FIG.

FIG. 4 is a side view of the recording head, carriage, etc. of FIG.

FIG. 5 is a perspective view showing an assembled state of the control board.

FIG. 6 is a perspective view showing a carriage.

FIG. 7 is a perspective view showing a carriage of the same.

FIG. 8 is a vertical cross-sectional view of a control board unit.

[Explanation of symbols]

10 Printer (recording device) 18 recording head 19 carriage 26 Carriage guide plate 27 Carriage axis 51 printed circuit board 52 power board 53 Backboard 55 Bottom plate 55A slit (blower hole) 56 blades (blowing member) 56A, 56B Blower surface

Claims (8)

[Claims] 1. A recording apparatus comprising a heating element along a scanning direction of a carriage, and a blower member that moves integrally with the carriage when the carriage is scanned to blow air to the heating element. 2. The recording apparatus according to claim 1, wherein the blower member has a blowing surface capable of blowing air to the heating element. 3. A recording apparatus, wherein a recording head mounted on a carriage is provided with a plurality of recording wires, and a recording device records an image on a sheet through an ink ribbon by a projecting operation of the recording wires. A recording apparatus comprising: a body, and a blower member that moves integrally with the carriage during scanning of the carriage and can blow air inside an enclosing member that surrounds the heating element. 4. The recording apparatus according to claim 3, wherein the blower member has a blower surface capable of blowing air to the heating element. 5. The recording apparatus according to claim 3, wherein the heating element is a control board surrounded by a shield plate, and a ventilation hole for air blown by a blowing member is formed in the shield plate. apparatus. 6. The recording apparatus according to claim 1, wherein the blower member is formed integrally with the carriage. 7. The recording apparatus according to claim 6, wherein the blower member has a blower surface capable of blowing upward when the carriage scans. 8. The recording apparatus according to claim 6, wherein the air blowing member includes a pair of air blowing surfaces that allow upward air blowing regardless of which direction the carriage is driven to reciprocate. .