JPH07266654A - Recorder - Google Patents

Abstract

PURPOSE: To reduce the cost of an encoder device related to the generation of a recording signal by integrally molding a slit plate and a cover member for supporting the slit plate to cover a detection region from a resinous material. CONSTITUTION: In a recording apparatus, a slit plate 40 having a slit 40A arranged along the moving direction of a carriage to generate a signal synchronizing to the moving timing of the carriage and a cover member and slit plate holder part 41 supporting the slit plate and covering the moving space 42C of the synchronizing signal generating means photointerruptor 54 moving along the slit plate are molded into an integrated slit member 42 from a resinous material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording device, and more particularly to a recording device having an encoder device for sending a recording signal to the recording head in synchronization with the movement timing of a carriage carrying the recording head. Regarding

[0002]

2. Description of the Related Art Conventionally, as an encoder device for obtaining the above-mentioned synchronizing signal for recording on a recording material, a photo interrupter and a slit plate in which a large number of slits are formed in parallel are provided. It is known that a cover member is provided along the slit plate so as to cover the plate for the purpose of protecting the plate from paper dust and the like emitted from the recording material.
The example shown in FIG. 11 shows an example of this type of encoder disclosed in Japanese Patent Application No. 5-88608. Here, 50 is a slit plate in which a plurality of slits 50A are arranged in parallel at equal intervals,
Reference numeral 51 is a cover member for the slit plate 50 (hereinafter referred to as a slit plate holder). The slit plate 50 has a thickness of 0.
The slit plate 50 is formed of a stainless steel plate of about 1 mm, and has a plurality of independent slits 50A.
The mounting seat 51A of the slit plate holder 51 is secured by the screw 52 so that a predetermined distance is maintained between the inner surface of the slit plate holder 51 and
It is fixed to.

The slit plate holder 51 to which the slit plate 50 is fixed is further positioned and fixed to the mounting seat 1A of the frame 1 on the recording apparatus side by a fixing screw 53. Reference numeral 54 denotes a photo interrupter having a light emitting portion 54A and a light receiving portion 54B, which is attached to a carriage (not shown) that moves by mounting a recording head. The photo interrupter 54 has a light emitting portion 54A and a light receiving portion 54B. The carriage moves in the P or Q direction with the slit plate 50 interposed therebetween. And each slit 5 during its movement
When the light receiving section 54B receives the light from the light emitting section 54A at the position of 0A, the recording signal to the recording head (not shown) can be synchronized in accordance with the signal output from the light receiving section 54B.

[0004]

However, in the above-mentioned conventional example, since the slit plate and the cover member (slit plate holder) are individually formed, and these are combined to be integrally formed, the number of parts is reduced. However, the number of man-hours increases, and the number of assembling steps increases accordingly, resulting in an increase in cost. Further, since the slit plate is formed of a stainless plate, it is more expensive than resin-based materials. Furthermore, if it is required for the recording apparatus to have different slit intervals or shapes, the slit plate must be removed from the slit plate holder and reassembled, which is troublesome. Also, since the slit plate is made of metal, etching or pressing must be used to provide the slits, and in any case expensive plates or molds are required, and in particular, those with different intervals etc. are required. In that case, it is necessary to prepare a new version or type for the type, which increases the cost.

An object of the present invention is to solve the above-mentioned conventional problems and to enable integral molding of a cover member and a slit plate with a resin-based material, thus making an encoder device for generating a recording signal inexpensive. It is to provide a recording apparatus that contributes to cost reduction by configuring.

[0006]

In order to achieve such an object, the present invention provides a recording apparatus for performing recording by the recording means in synchronization with the movement timing of the carriage while the carriage carrying the recording means is moving. In, a slit plate provided along the moving direction of the carriage, having a plurality of slits for generating a synchronization signal in synchronization with the movement timing, and supporting the slit plate and moving along the slit plate. The cover member for covering the moving space of the means for generating the synchronizing signal is integrally formed of a resin material.

[0007]

According to the present invention, since the slit plate and the cover member are integrally formed of a resin material, it is not necessary to position and fix the slit plate on the cover member one by one.

Further, in the above-mentioned slit plate, the slits can be narrowed by alternately arranging the slits in two rows.

Further, by making the slit plate free end side of the plurality of slits open, the die for integral molding can be simplified.

Furthermore, by forming a plurality of slit plates in parallel with the cover member and forming the slit plates with different gaps between the slit plates, the slit plates can be arranged as needed. The degree of freedom in selecting one of the slit plates can be obtained, and if necessary, it is also possible to individually generate signals by a plurality of synchronization signal generating means via slits provided in the individual slit plates. If it is possible to excise, it is possible to leave only the necessary slit plate.

[0011]

Embodiments of the present invention will be described in detail and specifically below with reference to the drawings.

1 and 2 show the construction of an ink jet recording apparatus as an embodiment of the present invention. Here, 1 is a base frame of the recording apparatus, 2 is a carriage 3 mounted on a carriage 3, and a recording head 4 that ejects ink from an ink ejection port (not shown) provided on its ejection surface 2A to perform recording, and 4 a carriage 3 Is a screw shaft for moving the carriage 3. As shown in FIG. 2, the carriage 3 is provided with a protrusion 3A which is fitted in the screw groove 5A of the screw shaft 5,
Due to the fitting, the carriage 3 can be moved along the guide shaft 4 and the carriage support portion 1A provided on the base frame 1 by the rotation of the screw shaft 5. Further, 6 shown in FIG. 1 is a flexible cable for sending a recording signal to the recording head 2, and 7A and 7B are clip members for holding the flexible cable 6 at the connection position on the carriage 3 and the intermediate base frame 1 side, respectively. , 8 are set levers for setting the recording head 2 at a predetermined position on the carriage 3.

Furthermore, in FIG. 1 and FIG.
Is a shaft of a sheet feeding roller for feeding a recording sheet (not shown), 9A is a rubber roller which is provided around the sheet feeding roller shaft 9, 10 is a pinch roller which comes into pressure contact with the rubber roller 9A, and the pinch roller 10 and the rubber roller 9A are provided. The recording sheet is held between and and the sheet is fed. Also,
Reference numeral 11 is a DC motor as a drive source, and the motor 11 drives the screw shaft 5 and the sheet feed roller shaft 9 as described later. Reference numeral 12 is a platen, and 13 is an encoder device provided to supply a synchronization signal for recording to the recording head 2 that moves together with the carriage 3. The encoder device 13 according to the present invention will be described in detail later. To do. Further, 9B shown in FIG. 1 is a gear provided on the sheet feed roller shaft 9, and is driven by a motor 11 via a main gear (not shown).

Next, the drive system of the motor 11 will be described with reference to FIGS.

In these figures, 15 is a worm gear (hereinafter referred to as a first worm gear) provided on the motor 11 and the moving shaft, 16 is a first wheel gear meshing with the first worm gear 15, and 17 is a first wheel gear. 16 is a second worm gear coaxial with 16, 18 is a second worm wheel meshing with the second worm 17, 19 is a main gear coaxial with the second worm wheel 18, and 20 is a main gear 1
9 is a screw gear that meshes with 9 to drive the screw gear 5, 21 is constantly meshed with the screw gear 20, and
It is a reversing gear (see FIG. 3) provided for moving the carriage 3 in the Q direction in FIG. 1 as described later.

Therefore, the motor 11 having such a structure
In the drive system of FIG. 3, the screw gear 20 is driven by the motor 11 in accordance with the transmission path shown by the bent arrow in FIG. The carriage 3 to which the protrusion 3A is fitted moves along the guide shaft 4 and the carriage support 1A at a predetermined timing. The motor 11 is always rotated in the same direction, whereby the main gear 19 is driven in the arrow J direction in FIG. 3, and the screw gear 20 and the screw shaft 5 are rotated in the arrow K direction to move the carriage 3 in the same direction. Arrow P in FIG.
Can be moved in any direction. Further, when the carriage 3 is moved in the direction of arrow Q, the screw shaft 5 rotates in the direction of arrow M by the rotation of the reversing gear 21 kept in mesh with the screw gear 20 in the direction of L.

The above-mentioned timings, control operation procedures, etc. are not directly related to the present invention and are well known, so that detailed description thereof will be omitted.

Further, in FIG. 4A, 30 is a rotary encoder for detecting the rotation of the motor 11,
Reference numeral 31 is a photodetector, 32 is a circuit board, and 33 is a lead wire for sending a detection signal from the photodetector 31 to the control unit (not shown) via the circuit board 32. Further, 34 is a disk-shaped encoder plate provided at the end of the first worm gear 15 at the same time as the motor 11.
Slits 4 are provided in the circumferential direction, and the rotation of the motor 11 is controlled by detecting these slits by the photo detector 31.

Details of the encoder device 13 according to the present invention shown in FIGS. 1 and 2 will be described with reference to FIG.

In the encoder device 13 of the present example, the position of the slit 40A provided in the slit plate 40 is moved during the movement of the carriage 3 by the photo interrupter 54 mounted on the carriage 3, as described above in the description of the conventional example. Is detected and the detection signal relating to the ink ejection signal from the recording head 2 is sent to the control unit.
Reference numeral 55 denotes a circuit board. On the circuit board 55, a detection signal sending circuit from the photo interrupter 54 is arranged and the photo interrupter 54 is mounted. Reference numeral 56 is a branch cable from the circuit board 55. The circuit board 55 is fixed to the boss portion 3B of the carriage 3 by machine screws 57.

In the encoder device 13 of this embodiment, as shown in FIG. 6A, the slit plate halter portion 41 and the slit plate 40 are integrally formed of a resin material. In FIG. 6 (A), in order to clearly show the member 42 (hereinafter referred to as a slit member) integrally formed, the frame 1 as shown in FIG. 2 or FIG. 4 (B). The member 42 is shown in the upside-down position when mounted on the. That is, in FIG.
2A attaches the slit member 42 to the member mounting seat 1B of the frame 1
The screw 43 is screwed toward the mounting seat 1B in the hole 42B formed in the mounting portion 42A, and the mounting portion is mounted on the mounting portion 42A. The slit member 42 can be positioned and fixed at a predetermined position as shown in FIG.

Further, in FIG. 6A, 42C is a gap provided between the slit plate 40 and the slit holder portion 41, and these gaps 42C and 42C are as shown in FIG. 6B. And the light emitting portion 54A and the light receiving portion 54B of the photo interrupter 54 are located respectively,
For example, infrared rays transmitted from 4A are received by the light receiving portion 54B via the slit 40A of the slit plate 40 to detect the movement position of the carriage 3. FIG. 6C schematically shows the relationship between the slit plate 40 and the slit 40A.

As in this example, the slit member 40 in which the slit plate 40 and the slit plate holder portion 41 are integrally made of a resin material is used.
By forming the slit plate 2 as described above, the slit plate, which was conventionally processed by a stainless plate or the like, is positioned and fixed to the slit plate holder formed by the resin material, but this is not necessary, and the number of parts is reduced. By reducing the number and the number of assembling steps, the cost can be greatly reduced. In addition, there is no change in the principle related to the detection,
There is nothing that poses a problem in terms of performance.

FIG. 7 shows an encoder device 13 according to a second embodiment of the present invention. In this example, a slit is easily formed in the slit plate 40 integrally formed with the slit holder portion 41 using a resin material. That is, (C) of FIG.
40A and 40B are slits formed in the slit plate 40, and in the case of this example, the rows of the slits 40A and the rows of the slits 40B are separated in the direction orthogonal to the moving direction on the slit plate 40, In addition, the slits 40A and 40B adjacent to each other are formed in a zigzag pattern, and the other slit is located at a position corresponding to ½ of one slit interval. It should be noted that the slit members 42 shown below are all shown as the top and bottom in accordance with FIG. 6A.

In the encoder device constructed as described above,
By forming the slits in two rows of 40A and 40B on the slit plate 40, it is possible to further reduce the substantial interval of the slits as compared with the first embodiment, and to increase the detection density accordingly. it can. In the case of this example, as shown by (B) and (C) in FIG.
In the photo interrupter 54, the position is detected through the slit 40A and then the position is detected through the slit 40B. However, in this case, the amount of light received on the side of the photo interrupter light receiving portion 54B tends to be lower than that in the first embodiment, so that the amount of light emitted on the side of the light emitting portion 54A is increased or the sensitivity on the side of the light receiving portion 54B is increased. It is desirable to take measures.

FIG. 8 shows an encoder device 13 according to a third embodiment of the present invention. In this example, one end of the slit 40C is opened, and the slit plate 40 is formed in a comb shape by the arrangement of the slits 40C as shown in (C).
By molding the slit member 42 as in this example, the first
In the case of the slit member shown in the embodiments and the second embodiment, the slide mold is required, but for example, the upper and lower punching molds may be used, which facilitates the molding. For example, in FIG.
Even when the surface 43D shown in (A) is set as the parting line of the mold, the row of the slits 40C may be formed at the same time as the gaps 42C formed on both sides of the slit plate 40. The cost can be reduced. Note that one end of the slit 40C (slit plate 4
It goes without saying that even if the 0 (free end side) is open, the detection operation by the photo interrupter 54 will not be hindered.

FIG. 9 shows an encoder device 13 according to a fourth embodiment of the present invention. In this example, two slit plates 40-1 and 40-2 arranged in parallel are molded integrally with a slit holder portion 41 by a resin material, and both slit plates 40-
1, 40-2, slit plate 40-1 and holder part 41
The slit plate 40-2 and the holder portion 41 maintain a space 42D between them. In addition, here, the slit 40-1A formed in the slit plate 40-1 and the slit 40-2A formed in the slit plate 40-2 have different formation pitches. Thus, as shown in FIGS. 9B and 9C, two photo interrupters 54-1 and / or 54-2 are selectively provided on the carriage side, and one of the photo interrupters 54-1 is used to form the slit plate 40. -1 slit 40-1A is detected, and the slit plate 40-
It is possible to detect the two slits 40-2A.

According to this embodiment, two slit plates 40 are provided.
It becomes possible to freely select and use the pitches of the slits 40-1A and 40-2A formed in -1 and 40-2, and both photo interrupters 54-1
Not only can the detection accuracy be further improved by detecting the slits from 5 and 54-2, but also the degree of freedom in slit setting can be increased.

FIG. 10 shows an encoder device 13 according to the fifth embodiment of the present invention. The feature of this example is that it is formed in parallel.
The slit plates 40-1 and 40-2 are provided with slits 40-1A and 40-2A having different pitches, respectively, and any one of the slit plates and the slits can be selected according to demand. In this example, one end (lower side) of each of the slits 40-1A and 40-2A is opened, but the fourth embodiment or the fifth embodiment is used.
In the embodiment, it may be freely selected whether one end of the slit is opened or the slit is not opened and is independently formed. Here, in the slit member 42 of this example, the gap 4 is provided between the slit plates 40-1 and 40-2.
A space 42E that is sufficiently narrower than that of 2C is provided, and a gap 42F is provided between the slit plates 40-1 and 40-2 at both ends in the longitudinal direction with the slit plate holder portion 41.

Therefore, in the slit member 42 integrally formed of the resin material as described above, only one slit plate is left, depending on which pitch of slits is selected, for example, (C) and (D) in FIGS. In this case, the detection operation by the photo interrupter 54 can be performed by the slit 40-1A of the slit plate 40-1 by cutting out 40-2 from the base as shown in FIG. In addition, according to the present embodiment, not only the interval of the slits can be freely selected according to the use, but also 2
Since the interval 42E between the slit plates 40-1 and 40-2 can be set to be sufficiently narrow in advance, it is not necessary to widen the width of the slit member 42 as a whole.

Further, in this embodiment, two slit plates are provided, but the number of slit plates is not limited to two, and, for example, 3
It can be formed according to the width of the slit holder portion 41 such as a sheet.

Further, in each of the above-mentioned embodiments, the case of the ink jet recording system as the recording means has been described, but the bubbles generated by heating the electrothermal converter in accordance with the recording signal and heating beyond the film boiling by the electrothermal converter. It is more preferable that the recording is performed by ejecting the ink from the ejection port according to the growth of the ink.

Regarding the typical structure and principle thereof, see, for example, US Pat. No. 4,723,129 and US Pat. No. 4,740.
What is done using the basic principles disclosed in 796 is preferred. This method is a so-called on-demand type,
It can be applied to any of the continuous type, but especially in the case of the on-demand type, it can be applied to the sheet holding the liquid (ink) or the electrothermal converter arranged corresponding to the liquid path. 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 is caused on the heat acting surface of the recording head. Liquid (ink) corresponding to this drive signal in a one-to-one correspondence
It is effective because bubbles can be formed inside. Due to the growth and contraction of the bubbles, the liquid (ink) is ejected through the ejection opening to form at least one droplet. It is more preferable to make this drive signal into a pulse shape, because the bubble growth and contraction are immediately and appropriately performed, so that the ejection of the liquid (ink) with excellent responsiveness 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 straight liquid passage or the right-angled liquid passage) as disclosed in the above-mentioned respective specifications. US Pat. No. 4,558,333, US Pat. No. 4,558,333, which discloses a configuration in which a heat acting portion is arranged in a bending region.
The structure using the specification of No. 59600 is also included in the present invention. In addition, Japanese Unexamined Patent Publication No. 59-123670 discloses a configuration in which a common slit is used as a discharge portion of the electrothermal converter for a plurality of electrothermal converters, and an opening for absorbing a pressure wave of thermal energy is provided. The effect of the present invention is effective even if the configuration corresponding to the ejection portion is disclosed in JP-A-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 configuration that satisfies the length by a combination of a plurality of recording heads or a configuration as one recording head integrally formed.

In addition, even in the case of the serial type as in the above example, the recording head fixed to the main body of the apparatus or the electrical connection to the main body of the apparatus or the ink from the main body of the apparatus by being mounted on the main body of the apparatus The present invention is also effective when a replaceable chip-type recording head that can be supplied or a cartridge-type recording head in which an ink tank is integrally provided in the recording head itself is used.

Further, as the constitution of the recording apparatus of the present invention, it is preferable to add an ejection recovery means of the recording head, a preliminary auxiliary means and the like because the effects of the present invention can be further stabilized. Specifically, heating is performed by using a capping unit, a cleaning unit, a pressure or suction unit for the recording head, an electrothermal converter or a heating element other than this, or a combination thereof. Examples thereof include a preliminary heating unit for performing the discharge and a preliminary discharge unit for performing discharge different from the recording.

Regarding the type and number of recording heads to be mounted, 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. A plurality of pieces may be provided. That is, for example, the recording mode of the recording apparatus is not limited to the recording mode of only the mainstream color such as black, but it may be either the recording head is integrally formed or a plurality of combinations may be used. The present invention is also extremely effective for an apparatus provided with at least one of full-color recording modes by color mixing.

In addition, in the embodiments of the present invention described above, the ink is described as a liquid, but an ink that solidifies at room temperature or lower and that softens or liquefies at room temperature may be used. Or, in the inkjet system, it is common to control the temperature of the ink itself within the range of 30 ° C. or higher and 70 ° C. or lower to control the temperature so that the viscosity of the ink is within the stable ejection range. Sometimes, a liquid ink may be used. In addition, the temperature rise due to thermal energy is positively prevented by using it as the energy of the state change of the ink from the solid state to the liquid state, or in order to prevent the evaporation of the ink, it is solidified and heated in the standing state. You may use the ink liquefied by. In any case, by applying thermal energy such as ink that is liquefied by applying thermal energy according to the recording signal and liquid ink is ejected, or that begins to solidify when it reaches the recording medium. The present invention can be applied to the case where an ink having a property of being liquefied for the first time is used. In this case, the ink is
JP-A-54-56847 or JP-A-60-7
As described in Japanese Patent No. 1260, it may be configured to face the electrothermal converter in a state of being held as a liquid or a solid in the concave portion or the through hole of the porous sheet. In the present invention, the most effective one for each of the above-mentioned inks is to execute the above-mentioned film boiling method.

In addition, as the form of the ink jet recording apparatus of the present invention, other than the one used as an image output terminal of information processing equipment such as a computer, a copying apparatus combined with a reader or the like, and a facsimile apparatus having a transmission / reception function can be used. It may be a form or the like.

Further, the recording means is not necessarily limited to the above-mentioned ink jet recording system, and various recording systems such as a wire dot recording system and a thermal recording system can be used.

[0042]

As described above, according to the present invention,
A slit plate provided along the moving direction of the carriage and having a plurality of slits for generating a synchronizing signal in synchronization with the moving timing, and the synchronizing plate supporting the slit plate and moving along the slit plate. Since the cover member for covering the moving space of the signal generating means is integrally formed of the resin material, the number of parts and the assembling man-hour can be reduced and the material cost itself can be reduced. The indispensable carriage moving encoder device can be made suitable for mass production.

Further, by arranging the slits provided on the slit plate in a zigzag pattern, the pitch of the slits can be narrowed to contribute to the improvement of the detection accuracy for the recording control.

Further, by making one of the slits open, it is possible to reduce the cost of the mold and the molding cost.

Furthermore, since a plurality of slit plates having different slit intervals and the like can be integrally formed as a slit member together with the slit holder part, the detection accuracy can be improved by combining with a plurality of slit detecting means, or a plurality of slit plates can be formed. It is possible to freely select one having a slit pitch according to a request from among the above, and it is not necessary to individually prepare the slit holder for each slit plate having a different pitch as in the conventional case.

[Brief description of drawings]

FIG. 1 is a top view showing an example of the configuration of a recording apparatus of the present invention.

FIG. 2 is a sectional view taken along line EE of FIG.

3 is an explanatory diagram showing a drive transmission path of a drive system of the recording apparatus shown in FIG.

FIG. 4 is an explanatory diagram showing the configuration of the recording apparatus shown in FIG. 1 by a side surface (A) that is upside down from a C direction and a side surface (B) from a D direction.

FIG. 5 is an explanatory diagram showing the configuration of the recording apparatus shown in FIG. 1 by the upside-down side surface (A) from the A direction and the side surface (B) from the B direction.

6A and 6B are perspective views of a slit member in which the configuration of the encoder device according to the first embodiment of the present invention is upside down, FIG. 6A is a sectional view taken along line AA of FIG. )
It is an explanatory view shown by.

7A and 7B are perspective views of a slit member in which the configuration of an encoder device according to a second embodiment of the present invention is upside down, and FIG. 7B is a cross-sectional view of two aspects by a cross section near the line BB of FIG.
It is explanatory drawing shown by (C) and the side view (D) of a slit plate.

FIG. 8 is a perspective view (A) of a slit member in which the configuration of an encoder device according to a third embodiment of the present invention is upside down, a sectional view (B) taken along the line CC of FIG. 8A and a side view (C) of the slit plate. )
It is an explanatory view shown by.

9A and 9B are perspective views of a slit member in which the configuration of an encoder device according to a fourth embodiment of the present invention is upside down, and FIG. 9A is a sectional view taken along line DD of FIG. It is an explanatory view shown.

FIG. 10 is a perspective view of a slit member in which the configuration of an encoder device according to a fifth embodiment of the present invention is upside down (A), (A).
FIG. 7 is an explanatory view showing a state diagram before selection of a slit plate (B), a state diagram at the time of selection (C), and a state diagram at the time of detection after selection (D) by a cross section taken along line EE of FIG.

FIG. 11 is an exploded perspective view showing a configuration example of an encoder device according to a conventional example.

[Explanation of symbols]

 1 Base Frame 1B Mounting Seat 2 Recording Head 3 Carriage 5 Screw Shaft 9 Sheet Feed Roller Shaft 11 (DC) Motor 13 Encoder Device 30 Rotary Encoder 31 Photo Detector 40, 40-1, 40-2 Slit Plate 40A, 40-1A , 40-2A Slit 41 Slit plate holder part 42 Slit member 42A Mounting part 42C, 42D Gap 54, 54-1, 54-2 Photo interrupter 54A Light emitting part 54B Light receiving part

Claims (6)

[Claims] 1. A recording apparatus for performing recording by the recording means in synchronization with the movement timing of the carriage during movement of a carriage carrying the recording means, the recording device being arranged along a moving direction of the carriage, A slit plate having a plurality of slits for generating a synchronization signal in synchronization with the timing, and a cover member for supporting the slit plate and covering the moving space of the means for generating the synchronization signal which moves along the slit plate. A recording device characterized in that and are integrally formed of a resin material. 2. The recording apparatus according to claim 1, wherein the plurality of slits are alternately arranged in two rows along a moving direction of the carriage. 3. The recording apparatus according to claim 1, wherein the plurality of slits are open at a free end side of a slit plate supported by the cover member. 4. The slit plate is formed in parallel with the cover member in a plurality of sheets, and the slits provided in the individual slit plates have different intervals. The recording device described. 5. The recording apparatus according to claim 4, wherein the ends of the plurality of slit plates in the carriage movement direction are separated from the cover member. 6. The recording means is a recording head for performing recording by ejecting ink, and the recording head serves as an element for generating energy for ejecting the ink to generate thermal energy for causing film boiling in the ink. The recording apparatus according to any one of claims 1 to 5, further comprising an electrothermal converting element that generates the recording.