JPH07156490A - Recorder - Google Patents

Abstract

PURPOSE:To provide a recorder in which a detecting accuracy of a sensor for detecting a home position is improved and a driving voltage of the sensor is set to a low value. CONSTITUTION:A home position of a recording head 1 is detected by detecting an end 5a of a guide plate 5 for supporting to guide a carriage 2 for placing the head 1 by a sensor 4 provided in the carriage 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus, and more particularly to a serial type recording apparatus which scans a recording head for recording.

[0002]

2. Description of the Related Art A typical home position detecting mechanism in a conventional serial type recording apparatus will be described with reference to FIGS.
At the bottom of the carriage 50, on which is mounted a shield plate 52 that blocks the optical path of the transmissive optical sensor 51.

The optical sensor 51 is fixed at a predetermined position of the housing 7, and the head cap 53 covers the nozzle 1a of the recording head 1 at a predetermined standby position of the recording head 1 (hereinafter referred to as "home position"). When the recording head 1 reaches the recording head 1, the shield plate 52 on the carriage 50 blocks the optical path of the optical sensor 51 to detect the home position of the recording head 1 and the carriage 50 stops. It is generally configured as described above.

Further, as another conventional technique, there is a configuration in which a sensor is provided on the carriage and a shielding plate is provided on the housing, contrary to the above configuration.

[0005]

However, in the above-described home position detecting mechanism of the recording apparatus, in the case where the recording head 1 is the ink jet system as described above, the nozzle 1a of the recording head 1 and the recording medium 3 are used. It is necessary to maintain a constant distance from the recording surface of the recording medium 3
When recording is performed using a sheet-shaped material such as paper or film, an envelope-shaped material, or cloth, the position of the recording head 1 is adjusted according to the thickness of each recording medium 3,
The distance between the nozzle 1a of the recording head 1 and the recording surface of the recording medium 3 is adjusted.

Further, as the position of the recording head 1 is adjusted, the position of the carriage 50 on which the recording head 1 is fixed and mounted on the recording medium 3 is generally moved, and the shield mounted on the carriage 50 is also moved. Since the position of the plate 52 is also moved by the adjustment width, when the recording head 1 reaches the home position as shown in FIG. 5B, the shield plate 52 is inserted into the light emitting portion of the optical sensor 51. It is necessary to preliminarily widen the intervals between the light receiving portions.

In view of the above circumstances, the optical sensor 51 is configured such that the light emitting portion and the light receiving portion of the optical sensor 51 are widened.
There is a problem that the detection accuracy when 51 detects the shield plate 52 is reduced. In addition, there is a problem that it is necessary to set the drive voltage of the optical sensor 51 to be high.

The present invention solves the above-mentioned problems.
It is an object of the present invention to provide a recording apparatus that improves the detection accuracy of a sensor that detects a home position and that can configure the drive voltage of the sensor at a low value.

[0009]

A typical configuration according to the present invention for achieving the above object is to provide a recording head and a recording head which are mounted on a carriage for recording. A sensor for detecting a position, a carriage on which the recording head and the sensor are mounted, and a carriage guide for guiding the carriage in parallel to a moving direction, and the sensor is provided in a longitudinal direction of the carriage guide. A recording apparatus, wherein the position of the recording head is detected by detecting one end.

[0010]

Since the recording apparatus according to the present invention is configured as described above, the home position of the recording head can be detected by the sensor mounted on the carriage detecting the end of the carriage guide.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An ink jet recording apparatus as an example of the recording apparatus according to the present invention will be specifically described with reference to the drawings. FIG. 1 is an overall perspective view of the recording apparatus according to the first embodiment of the present invention, and FIG. FIG. 3 is a partial cross-sectional explanatory view showing a detecting portion of the sensor of the first embodiment.

In FIG. 1, the recording sheet 3 supplied from the sheet supply port 8 provided on the upper part of the apparatus main body P is conveyed to a conveying roller (not shown) driven by a motor 6, and the platen 9 and the sheet pressing plate 10 are conveyed. And is pressed by the sheet pressing plate 10 and fixed to the recording surface of the platen 9.

A recording head 1 for recording by ejecting ink onto a recording sheet 3 at a position facing the platen 9.
Is mounted on the carriage 2 and is configured to move on the recording surface of the recording sheet 3 in parallel with the longitudinal direction of the platen 9.

A screw engaging portion (not shown) provided at one end of the carriage 2 is engaged with a groove 11a of a lead screw 11 axially supported by the housing 7 in parallel with the longitudinal direction of the platen 9 and The carriage 2 is configured to move in the longitudinal direction of the lead screw 11 as the screw 11 rotates.

A carriage holding portion 2a provided at the other end of the carriage 2 is engaged with a guide plate 5 which is a carriage guide provided in the housing 7 in parallel with the longitudinal direction of the lead screw 11, and It is configured to move on the guide plate 5. Therefore, the carriage 2 is held at a predetermined position by engaging the lead screw 11 with the screw engaging portion and the guide plate 5 with the carriage holding portion 2a, and the recording head 1 is opposed to the platen 9. It is possible to move while holding the position.

A transmission type optical sensor 4 is attached to the carriage 2 adjacent to the carriage holding portion 2a, and a guide plate 5 is provided between the light emitting portion and the light receiving portion of the sensor 4 as shown in FIG. It is inserted and configured to block the optical path. The carriage 2 is attached to one end of the guide plate 5.
Is provided with an end portion 5a formed substantially at right angles to the moving direction, and when the sensor 4 passes the end portion 5a, the shielding is released and the sensor 4 is turned on. .

The lead screw 11 is connected to a main scanning motor 15 via a gear 12, a transmission gear 13a and a gear 14, and when the motor 15 is rotated, the driving force thereof is the gear.
The lead screw 11 is rotated by being transmitted by 12, 13a and 14, and the carriage 2 can be moved in parallel with the longitudinal direction of the platen 9.

A head cap 16 is disposed adjacent to the platen 9 so that the nozzle 1a of the recording head 1 is covered with the head cap 16 when the recording head 1 reaches the home position. Has been done.

In this mechanism, by covering the nozzle 1a with the head cap 16, it is possible to prevent the ink in the recording head 1 from being dried or stuck, and if the ink should be dried or stuck, a pump device (not shown) is provided. Has a function of making the inside of the head cap 16 a negative pressure and sucking ink from the nozzle 1a of the recording head 1 to clean the nozzle 1a.

The drive mechanism of the head cap 16 is such that when the carriage 2 carrying the recording head 1 reaches the home position, the end portion of the carriage 2 causes the transmission gear 13 to move.
When the back surface of the clutch gear 13b arranged coaxially with a is pressed and the clutch gear 13b is pressed against the transmission gear 13a, the rotational driving force of the transmission gear 13a changes.
b.

Further, the driving force is the clutch gear 13b.
Is transmitted to the cap driving member 18 via the cap driving member 17 engaging with the head cap 16 and the driving member 18 having the head cap 16 mounted thereon moves toward the nozzle 1a of the recording head 1 to cover the head cap 16 on the nozzle 1a. Is configured.

When the carriage 2 reaches the vicinity of the home position, the sensor 4 reaches the end 5a of the guide plate 5 and shields the light emitting part and the light receiving part of the sensor 4 from each other. 5, the light emitted from the light emitting portion passes through the optical path to reach the light receiving portion, the sensor 4 is turned on, and the detection signal is transmitted to the control portion (not shown).

The operation of the recording apparatus constructed as described above will be described. First, when the power of the apparatus main body P is turned on, a control (not shown) is performed to see whether the carriage 2 carrying the recording head 1 is at the home position. The unit rotates the main scanning motor 15 and rotates the lead screw 11 via the transmission gear 13a and the like.

Then, the carriage 2 moves in the direction of arrow a in FIG. 1, and after the main scanning motor 15 rotates a predetermined number of pulses, the optical path of the sensor 4 is shielded by the guide plate 5 and the sensor 4 is turned off. If it is confirmed, a control unit (not shown) reverses the main scanning motor 15 to move the carriage 2 in the direction of arrow b in FIG. 1 to reach the vicinity of the home position.

Then, the optical sensor 4 whose optical path has been shielded by the guide plate 5 is turned on by passing through the end 5a of the guide plate 5 so that the optical path is unshielded and detected by a control unit (not shown). Transmit a signal. Then, the main scanning motor 15 is rotated by a predetermined number of pulses by a controller (not shown), and then the carriage 2 is stopped at the home position.

At the same time, the rear surface of the clutch gear 13b is pushed by the end of the carriage 2 so that the clutch gear 13b is connected to the transmission gear 13a in a pressed state.
The clutch gear 13b is rotated in association with the rotation of the recording head 1 and the head cap 16 is put on the nozzle 1a of the recording head 1 through the cap driving members 17 and 18, and the state is maintained.

Next, when the recording data is sent together with the recording start signal to the control unit (not shown), the main scanning motor 15 is rotated by the control unit and the lead screw 11 is transmitted through the transmission gear 13a and the like. To rotate. At this time, since the carriage 2 is at the home position and holds the above state, the clutch gear 13b connected to the transmission gear 13a by the pressing force of the carriage 2 rotates in conjunction with the transmission gear 13a, and the cap is driven. It is possible to remove the head cap 16 from the nozzle 1a of the recording head 1 via the members 17 and 18.

When the lead screw 11 further rotates, the carriage 2 moves in the direction of arrow a in FIG.
13b is disengaged from the transmission gear 13a, and the clutch gear 13b is held in a state where power is not working. Further, the sensor 4 has its optical path shielded by the guide plate 5 and maintains the OFF state, and transmits the OFF signal to a control unit (not shown). Further, while the lead screw 11 rotates and the carriage 2 moves in the direction of arrow a, the recording head 1 records the first line on the recording sheet 3 corresponding to the recording data.

When the recording of the first line is completed, one line of the recording sheet 3 is fed by the control unit (not shown), and
The lead screw 11 reversely rotates, the carriage 2 moves in the direction of arrow b in FIG. 1, and the recording head 1 records the second line on the recording sheet 3. Similarly, when the recording of the second line is completed, the recording sheet 3 is fed by one line by a control unit (not shown), the lead screw 11 is further rotated in the reverse direction, and the carriage 2 is moved in the direction of arrow a in FIG. Head 1
Records the third line on the recording sheet 3. Thereafter, the same operation is repeated to complete all recording on the recording sheet 3. During this time, the sensor 4 maintains the off state as described above.

After all the recording is completed, when the carriage 2 moves in the direction of arrow b in FIG. 1 and comes near the home position, the sensor 4 passes the end 5a of the guide plate 5 and the blocking of the optical path is removed. Then, the sensor 4 is turned on, and a detection signal is transmitted to a control unit (not shown). Then, the control unit rotates the main scanning motor 15 by a predetermined number of pulses to cover the nozzle 1a of the recording head 1 with the head cap 16 and wait as described above.

Here, it is conceivable that various kinds of papers or films having different thicknesses may be used as the recording sheet 3 and recording may be performed on an envelope or cloth as another recording medium.
Particularly in an ink jet type recording apparatus, it is necessary to keep the distance between the recording surface of the recording medium such as the recording sheet 3 and the nozzle 1a of the recording head 1 constant.

Accordingly, the recording head 1 is also used in this embodiment.
Is provided in the direction perpendicular to the longitudinal direction of the platen 9 to adjust the gap between the nozzle 1a and the recording surface of the recording sheet 3, and a gap adjusting mechanism (not shown) is provided. The recording head 1 and the carriage 2 move in a direction perpendicular to the longitudinal direction of the platen 9.

However, in this embodiment, the carriage 2
The carriage guide and the shield plate of the sensor 4 to the guide plate 5
Since it is configured so as to function also as described above, even if the distance between the recording head 1 is adjusted and the carriage 2 moves in the direction of the arrow in FIG. It suffices that the distance between the light emitting portion and the light receiving portion is relatively narrow, and the detection accuracy of the sensor 4 can be improved, and the driving voltage of the sensor 4 is low. Since it can be set, it can be configured as the sensor 4 with low power consumption.

Next, a second embodiment of the present invention will be described with reference to FIG. However, components having the same effects as those of the first embodiment are designated by the same reference numerals and description thereof will be omitted. Figure 3
FIG. 3 is a schematic view showing a constituent part of a sensor attached to the carriage 2. The reflection type optical sensor 20 provided at one end of the carriage 2 adjacent to the carriage holding portion 2a is arranged on the upper side of the guide plate 5 so as to face the upper surface of the guide plate 5 and receive light from the light emitting portion of the optical sensor 20. The parts are arranged adjacent to each other.

Therefore, when the sensor 20 faces the guide plate 5, the light emitted from the light emitting portion is reflected on the surface of the guide plate 5 and the reflected light is received by the light receiving portion. The sensor 20 is turned on, and the signal is transmitted to a control unit (not shown). In addition, the sensor 20 is connected to the end 5 of the guide plate 5.
In the state where the light emitted from the light emitting portion after passing through a is not reflected by the light receiving portion and is not received by the light receiving portion,
20 is turned off and transmits the signal to the control unit (not shown).

Here, the ON signal of the sensor 4 of the first embodiment is controlled so as to correspond to the OFF signal of the sensor 20, and the OFF signal of the sensor 4 is controlled so as to correspond to the ON signal of the sensor 20. However, the same effect can be obtained by making the other configurations the same as those of the first embodiment.

In this embodiment, the sensor 20 is attached to the guide plate 5.
The sensor 20 is arranged on the lower side of the guide plate 5, and the sensor 20 is arranged on the lower side of the guide plate 5.
The same effect can be obtained by disposing the sensor 20 so as to face both inner surfaces above and below.

Next, a third embodiment of the present invention will be described with reference to FIG. However, components having the same effects as those of the first embodiment are designated by the same reference numerals and description thereof will be omitted. Figure 4
FIG. 3 is a schematic view showing a constituent part of a sensor attached to the carriage 2. A mechanical sensor 30 constituted by a mechanical contact provided at one end of the carriage 2 adjacent to the carriage holding portion 2 a is arranged above the guide plate 5.

An elastic piece 30a which constitutes a part of the mechanical sensor 30 is arranged so as to abut and slide on the upper surface of the guide plate 5 as the carriage 2 moves, and opposes the piece 30a. The contacts 30b are provided at predetermined intervals.

In the mechanical sensor 30, when the carriage 2 moves on the guide plate 5 and the section 30a is in contact with the surface of the guide plate 5, the section 30a is pushed up by the guide plate 5 and contacts the contact 30b. Then, the switch of the sensor 30 is turned on, and the signal is transmitted to the control unit (not shown).

When the piece 30a passes through the end 5a of the guide plate 5 and the contact between the piece 30a and the guide plate 5 is released, the piece 30a is contacted by the elastic force of the piece 30a.
Separated from 30b, the switch of the sensor 30 is turned off, and its signal is transmitted to a control unit (not shown).

Here, a signal for turning off the switch of the sensor 30 is made to correspond to an ON signal of the sensor 4 of the first embodiment, and a signal for turning ON the switch of the sensor 30 is made to correspond to the OFF signal of the sensor 4. The same effect can be obtained by configuring the control so as to correspond to each other and making the other configurations the same as those of the first embodiment.

Further, in the present embodiment, since the section 30a which is in contact with and slides on the guide plate 5 scans the recording head 1 while biasing the carriage 2, the sensor 30 serves as a home position sensor and a carriage biasing means. It can be configured to double as.
Therefore, the carriage 2 does not rattle, and stable scanning of the recording head 1 can be performed.

Next, the recording head 1 relating to the ink jet recording apparatus according to this embodiment will be described. The recording head 1 serving as the recording means records an ink image on the recording sheet 3 conveyed by the conveying means. is there. As a recording unit in this apparatus, an inkjet recording system in which ink is ejected from the recording head 1 for recording is used. That is, the recording head 1 has a fine liquid discharge port (orifice), a liquid passage and an energy acting portion provided in a part of the liquid passage, and energy for generating a droplet forming energy that acts on the liquid in the acting portion. Equipped with generating means.

As the energy generating means for generating such energy, a recording method using an electromechanical transducer such as a piezo element, electromagnetic waves such as laser are irradiated to generate heat, and droplets are ejected by the effect of the heat generation. There are a recording method using an energy generating means, a recording method using an energy generating means for heating a liquid and discharging the liquid by an electrothermal converter such as a heating element having a heating resistor.

Among them, the recording head used in the ink jet recording method for ejecting a liquid by thermal energy has a high density of liquid ejection ports (orifices) for ejecting recording liquid droplets to form ejection liquid droplets. Since they can be arranged, high resolution recording is possible.

Among them, the recording head using the electrothermal converter as the energy generating means can be easily made compact, and the IC technology and the microfabrication technology, which have been remarkably improved in the technological progress and reliability in the recent semiconductor field, have been developed. This is advantageous because the advantages can be fully utilized, high-density mounting is easy, and the manufacturing cost is low.

Next, another embodiment relating to the ink jet recording apparatus will be described. Although the ink jet recording method is used as the recording means in the above-described embodiments, the film boiling generated in the ink is used by energizing the electrothermal converter according to the recording signal and by the thermal energy applied by the electrothermal converter. It is more preferable that the ink is ejected from the ejection port for recording due to the growth and contraction of bubbles generated in the ink.

With regard to its typical structure and principle, it is preferable to use the basic principle disclosed in, for example, US Pat. Nos. 4,723,129 and 4740796.

This system can be applied to both the so-called on-demand type and the continuous type, but in the case of the on-demand type in particular, it corresponds to the sheet or the liquid path holding the liquid (ink). To the electrothermal converter that is arranged as
By applying at least one drive signal corresponding to the recording information and giving a rapid temperature rise exceeding nucleate boiling, heat energy is generated in the electrothermal converter, and film boiling occurs on the heat acting surface of the recording head. This is effective because bubbles can be formed in the liquid corresponding to the drive signal in a one-to-one relationship as a result.

By the growth and contraction of the bubbles, the liquid is ejected through the ejection openings to form at least one droplet. It is more preferable to make this drive signal into a pulse shape because bubbles can be grown and contracted immediately and appropriately, so that particularly excellent liquid ejection can be achieved.

As the pulse-shaped drive signal, those described in US Pat. Nos. 4,463,359 and 4,345,262 are suitable. If the conditions described in US Pat. No. 4,313,124 of the invention relating to the rate of temperature rise on the heat acting surface are adopted, more excellent recording can be performed.

As the constitution of the recording head, in addition to the combination constitution of the discharge port, the liquid passage, and the electrothermal converter (the linear liquid passage or the right-angled liquid passage) as disclosed in the above-mentioned respective specifications. The present invention also includes configurations using US Pat. Nos. 4,558,333 and 4,459,600, which disclose configurations in which the heat acting portion is arranged in a bending region.

Further, JP-A-59-123670, which discloses a structure in which a common slit is used as a discharge portion of a plurality of electrothermal converters, and an opening for absorbing a pressure wave of thermal energy are disclosed. Japanese Patent Laid-Open Publication No.
The effect of the present invention is effective even if the configuration is based on Japanese Patent Laid-Open No. 59-138461. That is, according to the present invention, recording can be surely and efficiently performed regardless of the form of the recording head.

Further, the present invention can be effectively applied to a full line type recording head having a length corresponding to the maximum width of a recording medium which can be recorded by the recording apparatus. Such a recording head may have a structure that satisfies the length by combining a plurality of recording heads or a structure as one recording head integrally formed.

In addition, even in the case of the serial type described above, it is possible to electrically connect to the apparatus main body and supply ink from the apparatus main body by mounting the recording head fixed to the carriage or the carriage. A replaceable chip type recording head or a cartridge type recording head in which an ink tank is integrally provided in the recording head itself may be used.

Further, it is preferable to add a recovery means for the recording head, a preliminary auxiliary means, etc., which are provided as a constituent of the recording apparatus of the present invention, because the effects of the present invention can be further stabilized. Specifically, these are capping means, cleaning means, pressurizing or suctioning means for the recording head, preheating means by electrothermal conversion type or other heating element or a combination thereof, and recording. It is also effective to perform a stable recording by performing a preliminary discharge mode in which another discharge is performed.

Regarding the type or number of recording heads mounted on the carriage, for example, only one is provided corresponding to a single color ink, or a plurality of inks having different recording colors and densities are supported. And a plurality of them may be provided. That is, for example, the recording mode of the recording apparatus is not limited to a recording mode of only the mainstream color such as black, but may be a combination of a plurality of recording heads integrally formed, but a mixed color of different colors or a mixed color It is also applicable to a device with at least one of the full colors according to

In addition, in the above-described embodiments, the ink is described as a liquid, but it is an ink that solidifies at room temperature or below and that softens or liquefies at room temperature, or the ink jet recording system. 30 inks
Generally, the temperature is controlled in the range of ℃ to 70 ℃ to control the temperature of the ink so that the viscosity of the ink is within the stable ejection range. good.

In addition, the temperature rise due to the thermal energy is positively prevented by using it as the energy for changing the state of the ink from the solid state to the liquid state, or the ink is solidified in a standing state for the purpose of preventing evaporation of the ink. In some cases, whether ink is used, the ink is liquefied by applying thermal energy according to the recording signal and liquid ink is ejected, or it starts to solidify when it reaches the recording sheet. However, it is also applicable when using an ink that has the property of being liquefied for the first time by thermal energy.

The ink in such a case is disclosed in JP-A-54-5.
As described in Japanese Patent No. 6847 or Japanese Patent Laid-Open No. 60-71260, a mode in which it is opposed to the electrothermal converter in a state of being held as a liquid or a solid in the concave portion or through hole of the porous sheet. Also good. The most effective one for each of the above-mentioned inks is to execute the above-mentioned film boiling method.

Further, as the form of the above-mentioned ink jet recording device, besides the one used as an image output terminal device of information processing equipment such as a computer, a form of a copying device combined with a reader or the like, and a form of a facsimile device having a transmitting / receiving function. It may be one that takes

Although an example of using the ink jet recording method as the above-mentioned recording means has been described, the present invention need not be limited to the ink jet recording method, and other thermal transfer recording methods, heat sensitive recording methods, Can also be applied to an impact recording method such as a wire dot recording method or another recording method.

[0064]

Since the recording apparatus according to the present invention has the above-described structure and operation, when a transmissive optical sensor is used as the home position detecting sensor, the light emitting section and the light receiving unit of the sensor are used. It is possible to narrow the distance between the optical sensor and the portion to a value close to the thickness of the guide plate, and even if the position of the recording head is adjusted and the position of the carriage changes, the optical sensor does not depend on the change. Can detect the home position.

Similarly, when the home position detecting sensor is constructed by using a reflection type optical sensor or a mechanical sensor, even if the position of the recording head is adjusted and the position of the carriage is changed, the above-mentioned operation is performed regardless of the change. The optical sensor can detect the home position. Therefore,
By improving the detection accuracy of the home position and setting the sensor drive voltage to a low value, the sensor can be configured with low power consumption. In particular, when the home position is detected by a mechanical sensor, the sensor urges the carriage on which the recording head is mounted to perform stable scanning, so that the quality of the recorded image is improved.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a recording apparatus according to a first embodiment of the invention.

FIG. 2 is a partial cross-sectional explanatory view showing a detecting portion of the sensor of the first embodiment.

FIG. 3 is a schematic diagram showing the components of the sensor of the second embodiment.

FIG. 4 is a schematic diagram showing the components of the sensor of the third embodiment.

FIG. 5 is an explanatory diagram of a conventional example.

[Explanation of symbols]

1 ... Recording head, 1a ... Nozzle, 2 ... Carriage, 2a
... Carriage holding part, 3 ... Recording sheet, 4 ... Transmissive optical sensor, 5 ... Guide plate, 5a ... End part, 6 ... Motor, 7 ...
Case, 8 ... Sheet supply port, 9 ... Platen, 10 ... Sheet pressing plate, 11 ... Lead screw, 11a ... Groove, 12 ... Gear, 13
a ... transmission gear, 13b ... clutch gear, 14 ... gear, 15 ... main scanning motor, 16 ... head cap, 17, 18 ... cap drive member, 20 ... reflection type optical sensor, 30 ... mechanical sensor, 30a
… Section, 30b… Contact, P… Device body

Claims (6)

[Claims] 1. A recording apparatus for mounting a recording head on a carriage for recording, a recording head, a sensor for detecting a position of the recording head, a carriage for mounting the recording head and the sensor, A carriage guide that guides the carriage in parallel to the moving direction, and the sensor detects the position of the recording head by detecting one end portion of the carriage guide in the longitudinal direction. Recording device. 2. The recording apparatus according to claim 1, wherein a position where the sensor detects one end portion in the longitudinal direction of the carriage guide is a home position position of the recording head. 3. The recording apparatus according to claim 1, wherein one end of the carriage guide in the longitudinal direction is substantially perpendicular to the moving direction of the carriage. 4. The recording apparatus according to claim 1, wherein the recording apparatus is an inkjet recording system in which a recording head ejects ink in accordance with a signal to perform recording. 5. The recording apparatus according to claim 4, wherein the recording apparatus includes an electrothermal converter for the recording head to generate thermal energy for ejecting ink. 6. The recording apparatus according to claim 5, wherein the recording head ejects the ink from the ejection port by utilizing the film boiling generated in the ink by the thermal energy applied by the electrothermal converter. The recording device described.