JP2001260341A - Ink jet recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an ink jet recorder comprising a mechanism 3 for reciprocating a carriage 31 carrying an ink jet head 1 in the scanning direction, and a mechanism 4 for carrying a recording sheet 41 in the carrying direction and ejecting ink toward the recording sheet 41 in which high speed recording is realized while reducing the size of the recorder. SOLUTION: The carriage drive motor 33 of a scanning mechanism 3 and the carrying motor 42 of a carrying mechanism 4 are disposed at the substantially same positions in the ejecting direction on the side where a carriage 31 is disposed with respect to the passage for carrying a recording sheet 41. The carriage drive motor 33 and the carrying motor 42 are disposed, respectively, on one and the other sides in the scanning direction and an ink tank 53 for containing ink is interposed therebetween.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet recording apparatus which performs recording by adhering ink ejected from an ink jet head toward a recording medium onto the recording medium.

[0002]

2. Description of the Related Art Conventionally, there has been known an ink jet recording apparatus which performs recording by adhering ink discharged from an ink jet head toward recording paper onto the recording paper.

In this apparatus, a carriage on which the above-mentioned ink jet head is mounted is reciprocated in a scanning direction, and a recording sheet is transported in a transport direction orthogonal to the scanning direction. Then, by controlling the position of the ink jet head and the position of the recording paper, and the ejection of ink from the ink jet head, ink is attached to a predetermined position of the recording paper to perform recording. . In such an ink jet recording apparatus, the carriage is reciprocated in a scanning direction using a carriage driving motor as a driving source, while the recording paper is conveyed in a conveying direction using a conveying motor as a driving source.

[0004]

In the meantime, in the ink jet recording apparatus, there is a demand for high-speed recording, while there is a demand for downsizing the apparatus.

In order to realize the high-speed printing, it is necessary to move the carriage and the recording paper at a high speed. For example, it is conceivable that the carriage drive motor and the transport motor have high output.

However, a high-output carriage drive motor or a transport motor has a large outer diameter or a large length in the direction of the rotation axis, resulting in an increase in size.

On the other hand, in the above-mentioned ink jet recording apparatus, components cannot be disposed in a recording paper conveying path, or components cannot be disposed in a moving space in which a carriage reciprocates. Therefore, the carriage drive motor and the transport motor must be disposed at positions off the transport path and the moving space. For this reason, in order to dispose the large carriage drive motor and the transport motor, a large disposition space needs to be additionally provided at a position deviating from the transport path and the movement space. As a result, high-speed recording is possible. Even if this happens, the size of the ink jet recording apparatus will increase.

[0008] As described above, in the ink jet recording apparatus, there is an inconvenience that high-speed recording and miniaturization of the apparatus conflict with each other.

The present invention has been made in view of such circumstances, and an object of the present invention is to achieve both high-speed printing and downsizing of an ink-jet printing apparatus.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, according to the present invention, the positions of the carriage drive motor and the transport motor are devised so that the carriage drive motor and the transport motor are large. The size of the ink jet recording apparatus was reduced.

Specifically, the invention according to claim 1 is a scanning means for reciprocating a carriage provided with an ink jet head for ejecting ink in a scanning direction, and transporting a recording medium in a transport direction orthogonal to the scanning direction. The present invention is directed to an ink jet recording apparatus that includes a conveying unit that performs ink ejection in the discharge direction from the ink jet head toward the recording medium and adheres the ink onto the recording medium. The scanning means has a carriage drive motor as a drive source for reciprocating the carriage, the transport means has a transport motor as a drive source for transporting the recording medium, and the carriage drive motor and the transport motor Are located at substantially the same position in the discharge direction as viewed from the scanning direction, and are disposed at a position overlapping with the conveyance path of the recording medium or at a position where the carriage is disposed with respect to the conveyance path. Is a specific matter.

Here, the direction in which the carriage drive motor is disposed may be such that its rotation axis is in the scanning direction, or may be in the transport direction.
Similarly, the direction in which the transport motor is disposed may be such that the rotation axis thereof is in the scanning direction, or may be in the transport direction.

When the carriage drive motor and the transport motor are disposed at a position overlapping the transport path when viewed from the scanning direction, the carriage drive motor and the transport motor are disposed on the transport path when viewed from the discharge direction. In other words, it may be disposed at a position shifted outward in the scanning direction. On the other hand, when the carriage drive motor and the transport motor are disposed at a position where the carriage is disposed with respect to the transport path when viewed from the scanning direction, the carriage drive motor and the transport motor are viewed from the discharge direction. It may be disposed at a position shifted outward in the scanning direction with respect to the transport path, or may be disposed at a position overlapping with the transport path in the scanning direction when viewed from the discharge direction. With this configuration, both the carriage drive motor and the transport motor are disposed without interfering with the transport path.

According to the first aspect of the present invention, the carriage drive motor and the transport motor are arranged at substantially the same position in the discharge direction, so that the size of the motor in the discharge direction is equal to that of one motor. If there is an arrangement space, both the carriage drive motor and the transport motor can be arranged. For this reason, it is possible to greatly reduce the size of the ink jet recording apparatus in the ejection direction as compared with, for example, disposing the carriage drive motor and the conveyance motor at positions shifted from each other in the ejection direction.

Further, the carriage drive motor and the transport motor are arranged at a position overlapping with the transport path as viewed from the scanning direction or at a position on the side where the carriage is disposed with respect to the transport path, whereby It is not necessary to provide a new arrangement space only for disposing the carriage drive motor and the transport motor.

That is, since the carriage is provided in the above-described ink jet recording apparatus, a space is formed on the side where the carriage is provided with respect to the transport path so as to expand in the ejection direction by the size of the carriage. Therefore, by disposing the carriage drive motor and the transport motor in a position overlapping with the transport path or a position on the side where the carriage is disposed with respect to the transport path so that the carriage drive motor and the transport motor are disposed in the space. Thus, the carriage drive motor and the transport motor can be provided without providing a new installation space just for providing the carriage drive motor and the transport motor.

As described above, according to the first aspect of the present invention, even if the carriage drive motor and the transport motor are enlarged, the size of the carriage drive motor and the transport motor in the direction perpendicular to both the scan direction and the transport direction of the ink jet recording apparatus is greatly increased. The size can be reduced. As a result, in the inkjet recording apparatus, it is possible to achieve both high-speed recording and downsizing of the apparatus.

According to a second aspect of the present invention, in the first aspect of the present invention, the carriage driving motor is provided at a position adjacent to the carriage moving space in which the carriage reciprocates in the transport direction and on one side in the scanning direction. On the other hand, the transport motor is disposed on the other side in the scanning direction with respect to the carriage drive motor. And, between the carriage drive motor and the conveyance motor, at a position on the side where the carriage is disposed with respect to the conveyance path in the ejection direction,
It is a specific matter to arrange an ink tank for storing ink to be supplied to the inkjet head. Here, the ink tank and the carriage (ink-jet head) may be connected to each other by a tube for supplying ink, and the ink may be supplied via the tube.

According to the second aspect of the invention, the following operations and effects can be obtained.

That is, for example, when the carriage drive motor and the transport motor are arranged close to each other,
The temperature around the carriage drive motor and the transport motor becomes extremely high, which causes inconveniences such as adversely affecting other surrounding members.

However, according to the second aspect of the present invention, since the carriage drive motor and the transport motor, which generate heat during operation, are disposed apart from each other in the scanning direction.
In the ink jet recording apparatus, a portion having a high temperature locally is dispersed. Therefore, it is possible to reliably avoid the above-described inconvenience due to heat.

Further, by disposing the carriage drive motor and the transport motor apart from each other in the scanning direction, a relatively large space extending in the scanning direction is formed between the two motors. Therefore, by disposing the ink tank containing the ink to be supplied to the ink jet head between the two motors, it is not necessary to provide a new disposing space for disposing the ink tank. As a result, The size of the ink jet recording apparatus in the ejection direction and the transport direction can be reduced.

Further, since the space between the carriage drive motor and the transport motor is relatively large, it is possible to increase the capacity of the ink tank provided in the space. For this reason, it is possible to form an ink tank suitable for an ink jet recording apparatus that consumes a large amount of ink per unit time, such as an ink jet recording apparatus that performs recording at a high speed.

In addition, the distance between the ink tank and the carriage is shortened because the ink tank is disposed adjacent to the carriage moving space in which the carriage reciprocates in the transport direction. For this reason, it is possible to shorten the flow path length of the ink supply tube that connects the ink tank and the carriage to each other. Accordingly, the flow resistance of the ink in the tube can be reduced, and the ink can be stably supplied to the inkjet head provided on the carriage. as a result,
It is possible to configure a high-speed ink jet recording apparatus capable of performing stable recording.

According to the second aspect of the present invention, the ink tank is arranged between the carriage driving motor and the transport motor. Other components may be arranged between the transfer motor and the transfer motor.

That is, the scanning means and the conveying means are located between the carriage driving motor and the conveying motor and at a position on the side where the carriage is disposed with respect to the conveying path in the ejection direction. A power supply unit for supplying power to each unit may be provided.

According to a fourth aspect of the present invention, the scanning means and the transporting means are provided between the carriage driving motor and the transporting motor at a position on the side where the carriage is disposed with respect to the transporting path in the discharge direction. A control unit for controlling the operation of each means may be provided.

Further, the recording medium is transported to the transport means between the carriage drive motor and the transport motor and at a position on the side where the carriage is disposed with respect to the transport path in the discharge direction. A supply mechanism may be provided.

According to the third to fifth aspects of the present invention, the components necessary for configuring the ink jet recording apparatus by utilizing the space formed between the carriage drive motor and the transport motor, that is, A power supply unit for supplying power to each unit of the scanning unit and the conveying unit, a control unit for controlling the operation of each unit of the scanning unit and the conveying unit, or a supply mechanism unit for supplying a recording medium to the conveying unit is provided. Accordingly, the size of the ink jet recording apparatus can be reduced.

According to the third to fifth aspects of the present invention, the ink tank may be attached to the carriage and reciprocate integrally with the carriage, or may be provided separately from the carriage. And fixed to the ink jet recording apparatus.

On the other hand, the invention according to claim 6 is suitable for an ink jet recording apparatus in which the ink tank is reciprocated integrally with the carriage, and more specifically, the ink tank is mounted on the carriage. A first ink tank that stores ink supplied to the head,
The first ink tank is provided on the transport direction side of the first ink tank.
A second ink tank integrally formed with the ink tank so as to communicate with the ink tank, wherein the second ink tank is configured to reciprocate in a tank moving space with the reciprocating movement of the carriage. A specific matter is that the carriage drive motor is disposed on one side in the scanning direction with respect to the tank moving space, while the transport motor is disposed on the other side in the scanning direction with respect to the tank moving space. Is what you do.

According to the sixth aspect of the present invention, since the first and second ink tanks communicating with each other are provided, the ink tank has a large volume. Since the second ink tank is located between the carriage drive motor and the transport motor, the size of the inkjet recording apparatus in the ejection direction and the transport direction can be reduced. Therefore, it is possible to reduce the size of the inkjet recording apparatus capable of high-speed recording.

[0033]

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

<First Embodiment> FIGS. 1 and 2 show an ink jet recording apparatus A according to a first embodiment of the present invention, in which inks of yellow, magenta, cyan and black are used in an ink jet head. 1 is discharged toward a recording paper 41 as a recording medium, and color recording is performed on the recording paper 41.
In the figure, reference numeral 31 denotes a carriage on which the ink jet head 1 is provided, 3 denotes a scanning mechanism as a scanning means for reciprocating the carriage 31 in a scanning direction (X direction shown in the figure), and 4 denotes a scanning paper 41 for scanning the recording paper 41. This is a transport mechanism as a transport unit that transports in a transport direction (Y direction shown in the figure) orthogonal to the direction. The carriage moving space 3 is a space for the carriage 31 to reciprocate in the scanning direction.
1a is formed so as to expand in the scanning direction, and the carriage 31 reciprocates in the carriage moving space 31a in the scanning direction, whereby the inkjet head 1 reciprocates in the scanning direction.

The scanning mechanism 3 includes a carriage shaft 32 for guiding the carriage 31, a carriage driving motor 33 for driving the carriage 31 to reciprocate,
Carriage drive belt 3 for transporting the carriage 31
4.

The carriage shaft 32 is provided so as to extend in the scanning direction, and the carriage 31 is externally inserted into the carriage shaft 32. Therefore, the carriage 31 is guided by the carriage shaft 32 and moves along the carriage shaft 32.

The carriage drive belt 34 is provided with a drive pulley 34a spaced apart from each other in the scanning direction.
And the driven side pulley 34b.

The carriage driving motor 33 is disposed at a position adjacent to the carriage moving space 31a in the conveying direction and on one side in the scanning direction, and as shown in FIG. The carriage 3 against the road
1 is disposed on the side where it is disposed, that is, on the upper side in the discharge direction (Z direction shown in FIG. 2) with respect to the transport path.

The drive pulley 34a is attached to the rotating shaft of the carriage drive motor 33. Therefore, when the carriage drive motor 33 is driven to rotate, the drive pulley 34a rotates. The carriage driving belt 34 is driven between the driving pulley 34a and the driven pulley 34b with the rotation of the driving pulley 34a.

The carriage 31 has an engaging portion 31b for engaging with the carriage driving belt 34. When the carriage driving belt 34 is driven, the engaging portion 31b is connected to the carriage driving belt 34. To be conveyed. Therefore, the carriage 31 reciprocates in the scanning direction by rotating the rotation shaft of the carriage drive motor 33 in the forward or reverse rotation direction.

The transport mechanism 4 includes a transport motor 42 which is a drive source for transporting the recording paper 41, and a transport roller 43 and a pressing roller 44 which sandwich the recording paper 41 and transport the recording paper 41. .

The transport motor 42 is disposed at a position adjacent to the carriage moving space 31a in the transport direction and on the other side in the scanning direction.
Are arranged apart from each other in the scanning direction with respect to the carriage drive motor 33. Therefore,
The carriage drive motor 33 and the transport motor 42 are
They are located at the corners of the ink jet recording apparatus A (see the two-dot chain line in FIG. 1).

Further, as shown in FIG. 2, the transport motor 42 is arranged at substantially the same position as the carriage drive motor 33 in the discharge direction.

The transport roller 43 is provided so as to extend in the scanning direction, and is connected to the rotation shaft of the transport motor 42 via a plurality of gears 45. For this reason, the transport roller 43 is configured to rotate around its axis by the rotational drive of the rotating shaft of the transport motor 42.

The pressing roller 44 is connected to the transport roller 4.
3, the recording paper 41 is pressed against the conveying roller 43 side. Therefore,
When the transport motor 42 is driven to rotate, the recording paper 41 sandwiched between the transport roller 43 and the pressing roller 44 is transported in the transport direction.

The rotation shafts of the carriage drive motor 33 and the transport motor 42 are respectively provided with rotation detection boards 33.
a, 42a are attached to each of the rotation detecting boards 33.
a, 42a opposite to each other, the respective rotation detecting boards 33a, 42a
Angle detection sensors 33b, 42 for detecting the rotation angle of
b is provided. The rotation of the carriage drive motor 33 and the conveyance motor 42 are controlled based on the rotation angles of the rotation axes of the carriage drive motor 33 and the conveyance motor 42 detected by the rotation angle detection sensors 33b and 42b, respectively. It has become. The position of the carriage 31 and the position of the recording paper 41 are controlled by the control of the carriage drive motor 33 and the transport motor 42, respectively.

The carriage drive motor 33 and the transport motor 42 are of high output and are relatively large motors.

As shown in FIG. 3, the ink jet head 1 provided on the carriage 31 has a plurality of pressure chambers 11, 11,... Each of which is filled with yellow, magenta, cyan, and black inks. The pressure chamber 11 includes a nozzle hole 12 that is provided in a wall forming the chamber 11 and discharges ink in the pressure chamber 11, and an actuator 13 that deforms and operates so that the volume of each of the pressure chambers 11 decreases.

An ink flow path 11a to which ink is supplied communicates with each of the pressure chambers 11, and the ink flow path 11a is connected to a sub tank 51 mounted on the carriage 31. ing.

The actuator 13 is provided with the nozzle hole 12
The pressure chamber 11 is provided on the wall of the pressure chamber 11 opposite to the wall on which is formed. The actuator 13 is formed by sandwiching a piezoelectric film between a pair of electrodes, and the actuator 13 applies a voltage between the pair of electrodes, thereby forming a pressure chamber 11 by a so-called bimetal effect.
Is deformed inwardly to be deformed.
Then, the ink in the pressure chamber 11 is ejected from the nozzle hole 12 toward the recording paper 41 such that the ink in the pressure chamber 11 is pushed out from the nozzle hole 12 by the bending deformation. On the other hand, if the actuator 13 returns to the original state by the fall of the pulse voltage, the pressure chamber 11
The inside is filled with ink via an ink flow path 11a.

The application of a voltage to the actuator 13 is controlled by a head drive circuit 15 provided on the carriage 31. The head drive circuit 15 controls the deformation operation of the actuator 13. This controls the ejection of ink.

The sub-tanks 51, 51,... Are provided for each color ink, and as shown in FIGS.
Attached to the carriage 31, it reciprocates in the scanning direction in the carriage movement space 31a together with the carriage 31. Each sub-tank 51 is connected to ink supply tubes 52, 52,... For each color ink, and four ink supply tubes 52, 52,. The ink supply tubes 52, 52,...
Through the connecting portion 5 provided at a substantially central position in the scanning direction.
2a, are divided for each color in the connecting portion 52a, and are connected to main tanks 53, 53,... As ink tanks for accommodating inks of the respective colors.

The main tanks 53, 53,... Are provided for each color ink, and the carriage 31 is disposed between the carriage drive motor 33 and the conveyance motor 42 and in the conveyance path. Are arranged side by side in the scanning direction.

Although not shown, a power supply line connected to the head drive circuit 15 of the carriage 31 and other electric signal lines are integrated with the ink supply tubes 52, 52,... It is arranged.

Next, the operation and effect of the first embodiment will be described.

The carriage drive motor 33 and the transport motor 42 are disposed at a position where the carriage 31 is disposed with respect to the transport path when viewed from the scanning direction (FIG. 2).
Reference), the carriage drive motor 33 and the transport motor 42 are provided without interfering with the transport path of the recording paper 41.

By arranging the carriage drive motor 33 and the transport motor 42 at substantially the same position in the discharge direction, if there is a space for one motor in the discharge direction, the carriage Both the drive motor 33 and the transport motor 42 can be provided. Therefore, the size of the inkjet recording apparatus A can be significantly reduced in the ejection direction.

By disposing the carriage drive motor 33 and the transport motor 42 on the side of the transport path where the carriage 31 is disposed, the carriage movement space 3
The carriage drive motor 33 and the transport motor 42 are located in a space adjacent to 1a. For this reason, the carriage drive motor 33 and the transport motor 42 can be disposed without providing a new disposition space only for disposing the carriage drive motor 33 and the transport motor 42. As a result, even if the carriage driving motor 33 and the transport motor 42 are relatively large, the inkjet recording apparatus A can be configured to be small.

Further, since the carriage driving motor 33 and the transport motor 42, which generate heat during operation, are arranged apart from each other in the scanning direction, it is possible to prevent the inkjet recording apparatus A from being locally heated. It is possible,
Inconveniences caused by heat can be avoided.

By arranging the carriage drive motor 33 and the transport motor 42 apart from each other in the scanning direction, a space formed between the two motors 33 and 42 so as to extend in the scanning direction. Main tank 5
3, 53,... Can be arranged. Therefore, it is not necessary to provide a new disposing space for disposing the main tanks 53, 53,..., And as a result, it is possible to reduce the size of the inkjet recording apparatus A in the ejection direction and the transport direction. .

Moreover, since the space between the carriage drive motor 33 and the transport motor 42 is relatively large, the volume of the main tanks 53 can be increased. For this reason, the main tanks 53, 53,
Are suitable for the ink jet recording apparatus A in which the consumption of ink per unit time increases as the recording speed increases. Further, the main tanks 53, 5
Are arranged at positions adjacent to the moving space 31a in which the carriage 31 reciprocates in the transport direction, the flow path length of the ink supply tubes 52, 52,. Therefore, the flow resistance of the ink in the ink supply tubes 52, 52,... Becomes small, and the ink can be stably supplied to the inkjet head 1 provided on the carriage 31. As a result, a stable high-speed ink jet recording apparatus A capable of performing recording can be configured.

Accordingly, even if the carriage drive motor 33 and the transport motor 42 are large, the ink jet recording apparatus A can be made smaller in the ejection direction and the transport direction. Compatibility with miniaturization can be achieved.

<Second Embodiment> FIG. 4 shows an ink jet recording apparatus B according to a second embodiment. In the first embodiment, the main tanks 53, 53 are provided between the carriage drive motor 33 and the transport motor 42. Are arranged, but in the second embodiment, a battery pack 61 as a power supply unit is arranged between the carriage drive motor 33 and the transport motor 42.

That is, in the second embodiment, the main tanks 53, 53,... Are omitted, and only the ink tanks 54, 54,.

The scanning mechanism 3 and the transport mechanism 4 are located between the carriage drive motor 33 and the transport motor 42 and on the side where the carriage 31 is disposed with respect to the transport path of the recording paper 41. A battery pack 61 for supplying electric power to the power supply is provided.

Since the other construction of the ink jet recording apparatus B is the same as that of the first embodiment, the same members are denoted by the same reference numerals and the description thereof will be omitted.

The second embodiment is particularly suitable for constructing a portable ink jet recording apparatus B, and the space between the carriage drive motor 33 and the transport motor 42 is provided with the battery pack 61. By using it as a space, a small-sized inkjet recording apparatus B capable of high-speed recording can be configured.

<Third Embodiment> FIG. 5 shows an ink jet recording apparatus C according to a third embodiment. In the third embodiment, an electric control unit between a carriage drive motor 33 and a conveyance motor 42 serves as a control unit. A circuit 62 is provided.

In the third embodiment, as in the second embodiment, the main tanks 53, 53,... Are omitted, and the ink tank 5 mounted on the carriage 31 is omitted.
4, 54,... Only.

The scanning mechanism 3 and the transport mechanism 4 are located between the carriage driving motor 33 and the transport motor 42 and on the side where the carriage 31 is disposed with respect to the transport path of the recording paper 41. Electrical circuit 62 for controlling the operation of
Are arranged.

The other components of the ink jet recording apparatus C are the same as those of the first embodiment. Therefore, the same members are denoted by the same reference numerals and description thereof will be omitted.

Also in the case of the third embodiment, the space between the carriage drive motor 33 and the transport motor 42 is used as a space for disposing the electric circuit 15, so that a small-sized ink jet capable of high-speed recording is provided. The recording device C can be configured.

<Fourth Embodiment> FIG. 6 shows an ink jet recording apparatus D according to a fourth embodiment. In this fourth embodiment, a supply mechanism 63 is provided between a carriage drive motor 33 and a transport motor 42. It is arranged.

In the fourth embodiment, as in the second embodiment, the main tanks 53, 53,... Are omitted and the ink tank 5 mounted on the carriage 31 is omitted.
4, 54,... Only.

At a position between the carriage drive motor 33 and the conveyance motor 42 and on the side where the carriage 31 is disposed with respect to the conveyance path of the recording paper 41, the conveyance mechanism 4 Is provided. The supply mechanism section 63 holds a plurality of recording papers 41 and supplies the held recording papers 41 to the transport mechanism 41 one by one.

The other components of the ink jet recording apparatus D are the same as those of the first embodiment. Therefore, the same members are denoted by the same reference numerals, and description thereof will be omitted.

Also, in the case of the fourth embodiment, the space between the carriage drive motor 33 and the transport motor 42 is used as a space for disposing the supply mechanism 63, so that high-speed recording is possible. An ink jet recording apparatus D can be configured.

<Fifth Embodiment> FIG. 7 shows an ink jet recording apparatus E according to a fifth embodiment. In the fifth embodiment, the space between the carriage drive motor 33 and the transport motor 42 is defined as a tank moving space. 55c.

That is, the ink tank 55 in the fifth embodiment is provided on a first tank portion 55a as a first ink tank attached to the carriage 31, and is provided on the transport direction side with respect to the first tank portion 55a. An ink tank 55 having a second tank portion 55b as a second ink tank integrally formed so as to communicate with the first tank portion 55a is provided.

The second tank 55b is located in a space between the carriage drive motor 33 and the conveyance motor 42 and on the side where the carriage 31 is disposed with respect to the conveyance path of the recording paper 41. It is supposed to. Therefore, the first tank portion 55a reciprocates in the carriage moving space 31a due to the reciprocation of the carriage 31, while the second tank portion 55b is formed between the carriage drive motor 33 and the transport motor 42. It reciprocates in the tank moving space 55c.

Since the other construction of the ink jet recording apparatus E is the same as that of the first embodiment, the same members are denoted by the same reference numerals and the description thereof will be omitted.

In the case of the fifth embodiment, since the ink tank 55 has the first and second tank portions 55a and 55b, the capacity can be increased. Further, since the second tank portion 55b is located between the carriage drive motor 33 and the transport motor 42, even if the large-capacity ink tank 55 is used, the second tank portion 55b is small in the ejection direction and the transport direction of the inkjet recording apparatus E. Can be achieved. Therefore, the inkjet recording apparatus E capable of high-speed recording can be configured to be small.

<Other Embodiments> The present invention relates to the first embodiment.
The present invention is not limited to the fifth to fifth embodiments, but includes various other embodiments. That is, the first
In the fifth to fifth embodiments, the carriage drive motor 33 and the conveyance motor 42 are arranged at a position on the side where the carriage 31 is arranged with respect to the conveyance path of the recording paper 41. However, the present invention is not limited to this. Instead, the carriage drive motor 33 and the transport motor 42 may be arranged at a position overlapping the transport path when viewed from the scanning direction. Also in this case, it is possible to configure an ink jet recording apparatus that is reduced in size in the ejection direction.

In the first to fifth embodiments, the carriage drive motor 33 is disposed so that the rotation axis thereof faces the transport direction. However, the present invention is not limited to this. The carriage drive motor 33 may be provided so as to face. Similarly, in the first to fifth embodiments, the transport motor 42 is disposed so that its rotation axis faces the scanning direction. However, the transport motor 42 is disposed so that the rotation axis faces the transport direction. May be.

Further, the positions of the carriage drive motor 33 and the transport motor 42 in the scanning direction may be interchanged.

[0086]

As described above, according to the ink jet recording apparatus of the present invention, the carriage drive motor and the transport motor are located at substantially the same position in the discharge direction, and the transport of the recording medium is viewed from the scan direction. By arranging the carriage drive motor and the conveyance motor in a position overlapping with the path or on a side where the carriage is arranged with respect to the conveyance path, the size of the ink jet recording apparatus in the ejection direction can be reduced even if the carriage drive motor and the conveyance motor are enlarged. As a result, an ink jet recording apparatus capable of high-speed recording can be formed in a small size.

Further, by disposing the carriage drive motor and the transport motor at a distance from each other in the scanning direction, and by disposing various components constituting the ink jet recording apparatus between the carriage drive motor and the transport motor, It is possible to reduce the size of the ink jet recording apparatus in the discharge direction and the transport direction.

Accordingly, in the ink jet recording apparatus, it is possible to achieve both high-speed recording and downsizing of the apparatus.

[Brief description of the drawings]

FIG. 1 is an explanatory plan view showing an ink jet recording apparatus according to a first embodiment.

FIG. 2 is an explanatory perspective view showing the ink jet recording apparatus according to the first embodiment.

FIG. 3 is an explanatory sectional view showing an ink jet head portion.

FIG. 4 is a diagram corresponding to FIG. 2, illustrating an inkjet recording apparatus according to a second embodiment.

FIG. 5 is a diagram corresponding to FIG. 2, illustrating an ink jet recording apparatus according to a third embodiment.

FIG. 6 is a diagram corresponding to FIG. 2, illustrating an ink jet recording apparatus according to a fourth embodiment.

FIG. 7 is an explanatory perspective view showing an ink jet recording apparatus according to a fifth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ink-jet head 3 Scanning mechanism (scanning means) 4 Transport mechanism (transporting means) 31 Carriage 33 Carriage drive motor 41 Recording paper (recording medium) 42 Transport motor 53 Main tank (ink tank) 61 Battery pack (power supply part) 62 Electric circuit (Control unit) 63 Supply mechanism unit 31a Carriage movement space 55a First tank unit (first ink tank) 55b Second tank unit (second ink tank) 55c Tank movement space

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Hiroyuki Matsuba 1006 Kazuma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. Terms (reference) 2C056 EA01 EA23 FA10 HA60 2C061 AQ05 BB03 BB35 CC01

Claims (6)

[Claims] 1. An inkjet head comprising: a scanning unit for reciprocating a carriage provided with an inkjet head for ejecting ink in a scanning direction; and a transport unit for transporting a recording medium in a transport direction orthogonal to the scanning direction. An ink jet recording apparatus for adhering ink ejected in an ejection direction from the recording medium to the recording medium, wherein the scanning means has a carriage drive motor which is a driving source for reciprocating the carriage; and A carriage motor that is a drive source for transporting the recording medium, wherein the carriage drive motor and the transportation motor are located at substantially the same position in the ejection direction as viewed from the scanning direction, and have a transportation path of the recording medium. And at a position on the side where the carriage is disposed with respect to the transport path. Inkjet recording apparatus. 2. The carriage motor according to claim 1, wherein the carriage drive motor is disposed at a position adjacent to the carriage movement space in which the carriage reciprocates in the carriage direction and on one side in the scanning direction. Is disposed on the other side of the scanning direction with respect to the carriage drive motor, and is located between the carriage drive motor and the transport motor and on the side where the carriage is disposed relative to the transport path in the discharge direction. An ink jet recording apparatus, wherein an ink tank for storing ink supplied to an ink jet head is disposed at a position. 3. The carriage motor according to claim 1, wherein the carriage drive motor is provided at a position adjacent to a carriage movement space in which the carriage reciprocates in the carriage direction and on one side in the scanning direction. Is disposed on the other side of the scanning direction with respect to the carriage drive motor, and is located between the carriage drive motor and the transport motor and on the side where the carriage is disposed relative to the transport path in the discharge direction. An ink jet recording apparatus, wherein a power supply unit for supplying electric power to each of a scanning unit and a conveying unit is provided at a position. 4. The carriage motor according to claim 1, wherein the carriage drive motor is disposed at a position adjacent to a carriage movement space in which the carriage reciprocates in the carriage direction and on one side in the scanning direction. Is disposed on the other side of the scanning direction with respect to the carriage drive motor, and is located between the carriage drive motor and the transport motor and on the side where the carriage is disposed relative to the transport path in the discharge direction. An ink jet recording apparatus, wherein a control unit for controlling the operation of each of a scanning unit and a conveying unit is provided at a position. 5. The carriage motor according to claim 1, wherein the carriage drive motor is disposed at a position adjacent to the carriage movement space in which the carriage reciprocates in the carriage direction and on one side in the scanning direction. Is disposed on the other side of the scanning direction with respect to the carriage drive motor, and is located between the carriage drive motor and the transport motor and on the side where the carriage is disposed relative to the transport path in the discharge direction. An ink jet recording apparatus, wherein a supply mechanism for supplying a recording medium to a conveying unit is provided at a position. 6. The first ink tank according to claim 1, wherein the first ink tank is mounted on a carriage and stores the ink to be supplied to the ink jet head, and is provided on a side of the first ink tank in a transport direction and communicates with the first ink tank. A second ink tank formed integrally with the carriage so that the second ink tank reciprocates in a tank moving space as the carriage reciprocates, and a carriage drive motor moves in the tank moving space. The inkjet recording apparatus according to claim 1, wherein the transport motor is disposed on one side in the scanning direction, while the transport motor is disposed on the other side in the scanning direction with respect to the tank moving space.