JPH0299333A - Liquid jet recording apparatus - Google Patents

Abstract

PURPOSE:To facilitate the mounting and detaching work of a recording head and to certainly perform the positioning and fixing of the recording head by providing a member for pressing the recording head at least in three directions to fix the same and providing a recessed part between an electric contact part and a liquid contact part. CONSTITUTION:A recording head 51 is fixed to a carriage 5 by head pressing elastic members 521, 522, 523. At this time, since the recording head 51 is pressed to the carriage 51 in three different directions by the respective elastic members, the recording head 51 is certainly fixed to the carriage 5. Further, in the mounting and detaching direction of the recording head 51, a boss 511 being a protruding part is provided to the recording head 51 and a hole 56 being a recessed part is provided to the carriage 5 and, by providing both of the boss and the hole, the recording head 51 can be easily aligned at the time of mounting. By providing ink connection parts 54, 512 and electric connection parts 59, 513 in the same direction as the axis of the boss 511 and that of the hole 56, the recording head 51 is mounted on the carriage 5 and, at this time, the electrical connection with ink is performed.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a liquid jet recording device.

[Prior Art] Conventionally, a movable part (hereinafter referred to as a carriage) is equipped with a recording head that moves back and forth perpendicularly to the conveyance direction of a recording medium such as paper or an OHP sheet (hereinafter also referred to as recording paper or simply paper). A so-called serial type printing apparatus (hereinafter referred to as a serial printer) having a serial type printing apparatus (hereinafter referred to as a serial printer) has been proposed in the form of being equipped with printing heads using various printing methods. The recording heads used in this serial printer include those based on wire tod type, thermal type, thermal transfer type, and inkjet type.

In particular, the inkjet method is attracting attention as a low running cost and quiet recording method because it jets ink directly onto recording paper.

As methods for fixing a print head to a carriage using this inkjet method, there are known methods in which the print head is integrated with the carriage, and a method in which a separate print head is fixed to the carriage with screws.

[Problems to be Solved by the Invention] However, in a configuration in which the print head and carriage are integrated, it is impossible to replace the print head alone when replacing the print head, and it is necessary to disassemble the device, which is extremely difficult. This requires complicated work and poses a problem in terms of maintenance.

In this respect, it is advantageous to separate the two, but in the conventional configuration in which the recording head is screwed to the carriage, there is a risk of shorting out the electrical connection of the recording head with a tool such as a screwdriver that removes the screws. Furthermore, if the screws are not completely tightened, there is a problem that the recording head may become loose and the image may deteriorate, or ink may leak from the ink joint.

The object of the present invention is to provide a serial type liquid jet recording device (
In an inkjet recording device (hereinafter referred to as an inkjet recording device), the recording head can be easily attached and detached, and it can be positioned or fixed securely, and electrical contacts and ink communication sections can be reliably connected. The purpose of the invention is to protect the electrical contact portions even against.

[Means for Solving the Problems] To achieve this, the present invention provides a liquid jet recording apparatus in which a recording head for discharging a recording liquid is mounted on a movable section that moves in a predetermined direction with respect to a recording medium. The recording head is mounted on the movable part by a fixing member made of an elastic body that presses against the reference part from at least three sides, and an electric contact part for transmitting a drive signal to the ejection energy generating element of the recording head. A liquid connecting portion for supplying recording liquid to the recording head, and a recess provided between the liquid connecting portion and the electrical contact portion, which is deeper in the mounting direction of the recording head than the liquid connecting portion, and the recording head is , an electrical contact for receiving a drive signal, and a liquid connection for receiving a supply of recording liquid;
It is characterized by having a convex part that protrudes from these parts and can be fitted into the four parts.

[Function] According to the present invention, by providing a member that presses and fixes the recording head from at least three directions, the recording head can be easily attached and detached, and the fixation is ensured. The electrical contact portion and the liquid connection portion are connected in a state where the recess and the recess are fitted to achieve accurate positioning. Furthermore, since the recess is provided between the electrical contact and the liquid connection section, even if liquid leaks, the leaked liquid will not reach the electrical contact.

[Example] Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is an external perspective view of an inkjet recording apparatus according to an embodiment of the present invention, and FIG. 2 is a sectional view of the main parts of the apparatus shown in FIG. Further, FIG. 3 is a partially enlarged view of the paper feeding mechanism section in FIG. 1.

In these figures, reference numeral 61 denotes a pressure plate, on which recording sheets are loaded to be supplied to the inkjet recording apparatus. Reference numeral 62 denotes a pressure plate spring attached to the back surface of the pressure plate 61, and the pressure plate 61 is biased upward by the pressure plate spring 62. 63
is a paper width regulating plate, which is disposed so as to be slidable on the pressure plate 61 and regulates its position according to the width of the recording paper stacked on the pressure plate 61. A separation roller 65 separates the recording sheets stacked on the pressure plate 61 one by one, and is fixed to a separation roller shaft 651. Reference numeral 652 denotes an arc-shaped pressing roller, one of which is provided on each side of the separation roller 65, and which is attached to the separation roller shaft 651.
A pressure plate push-down cam 661 is attached to one end of the six-separation roller shaft 651, which is mounted so that it can rotate freely relative to the
is fixed, and a separation roller gear 662 is rotatably loosely fitted roughly adjacent to the pressure plate push-down cam 661. A spring clutch 663 is disposed between the pressure plate push-down cam 661 and the separation roller gear 662, and the spring clutch 66
3, when the lock ring 664 provided around the lock ring 664 is locked by the lock claw 665, the rotational force is not transmitted (off), and when the lock claw 665 comes off from the lock song 664 and the lock ring 664 becomes free. Rotational force transmission (ON) status is established. Here, the lock claw 665 is in a position where it is released from engagement with the lock ring 664 described above due to dynamic contact with a protrusion of the carriage 5, which will be described later.

A cam receiver portion 811 is formed on the pressure plate 61 at a position that engages with a pressure plate push-down cam 661. As a result, when the pressure plate 61 is pressed down by the pressure plate push-down cam 661, the recording paper is separated by the separation roller 65 and the presser roller 6.
52, and the push-down cam 661 is separated from the cam receiver part 61.
1 , the pressure plate 61 is pushed down by the pressure plate spring 62 and the recording paper is pressed against the separation roller 65 .

Further, on the downstream side of the pressure plate 61 in the paper feeding direction, a separation pad 66 is provided for frictionally separating the recording sheets one by one.
5 and presser roller 652. The press roller 652 has a circular shape in a cross section perpendicular to the roller shaft 651, and the separation roller 65 has an approximately semicircular arc shape in the same cross section, and the radius of the separation roller 65 is smaller than the radius of the press roller 652. Make it slightly larger. As a result, the separation pad 66 is pressed against the separation roller 65 in the arc range thereof, and is pressed against the presser roller 652 in the other range.

Here, the diameter of the separation roller 65 is about 20 to 30 mm, which is relatively small. As a result, as shown in FIG. 2, the angle α between the contact point of the pressure plate 61 with the separation roller δ5 and the contact point of the separation pad 66 with the separation roller 65 increases, and therefore the leading edge of the recording paper picked up by the separation roller 65 increases. The angle of entry into the separation pad 66 is the pressure plate 6
1, and even if the separation pad pressure by the pad spring 67 is small, the separation performance will not be impaired. A normal separation roller diameter (approximately 40 mI11) requires a separation pad pressure of approximately 300 g, whereas a small diameter (approximately 2
0 to 30 mm), it becomes possible to separate without any problem even when the weight is around 50 g.

Therefore, when the paper feed roller 7 is feeding the recording paper, the back tension received from the presser roller 652 and the separation pad 66 is reduced, allowing stable paper feeding.

Further, changes in the feed amount that occur when the trailing edge of the recording paper comes off from the presser roller 652 and separation pad 66 can also be suppressed.

Reference numeral 7 denotes a paper feed roller provided on a conveyance path for further conveying the recording paper fed by the above-mentioned paper feeding mechanism to a recording position facing the recording head, and 7 is a paper feed roller provided on a conveyance path that conveys the recording paper fed by the above-mentioned paper feed mechanism to a recording position facing the recording head. Pinch rollers 81 are arranged to pinch. The pinch roller 81 is rotatably supported at both ends on the pinch roller stay 8, which is biased by a pinch roller spring 82.

Further, the pinch roller stay 8 is attached so as to be rotatable around a stay viewpoint 83. A paper guide 9 guides the recording paper fed from the paper feed mechanism to a position where it is sandwiched between the paper feed roller 7 and the pinch roller 81. Reference numeral 10 denotes a paper press plate that presses the recording paper from floating up from the pinch roller 81.

The paper feed roller 7 is driven by a motor (not shown), and at this time, the driving force is transmitted in one stage using gears, etc., and one rotation of the motor records! The reduction ratio is such that line separation is performed. As a result, eccentric components of the motor itself and the motor gear that cause image deterioration, such as white lines and overlaps that occur at the joints of recording lines in a recorded image due to paper feeding, are canceled. Further, since the drive motor to the paper feed roller 7 is decelerated by one step and the driving force is transmitted using the minimum number of transmission elements, no extra error component is included.

Reference numeral 11 denotes a hot plate having a heater on its back side, which cooperates with a power supply section to be described later to promote ink fixation on the recording paper.

There is no practical problem as long as the temperature of the hot plate 11 is in the range of 40°C to 90°C. 12 is a paper discharge roller, and a paper discharge pinch roller 13 is provided opposite to this. The paper discharge pinch roller 13 has a wheel-like shape and presses the recording surface side of the recording paper at a point to prevent the recording surface from being stained by rubbing or the like when the recording surface is incompletely fixed with ink. In addition, the feed speed of the paper ejection roller 12 is set several percent faster than the feed speed of the paper feed roller rough to apply tension to the recording paper and maintain the close contact of the recording paper to the hot plate 11 and the flatness of the recording paper at the recording position. That's what I do.

The hot plate 11 is located downstream of the recording element of the recording head 51 in the recording paper conveyance path, so that the heat from the hot plate 11 is not applied directly to the recording element portion of the recording head 51. Also,
A gap is provided between the paper guide 9 and the hot plate 11, and a paper width sensor consisting of a reflective photosensor provided on the carriage 5 performs detection at the gap, thereby preventing false detection due to reflection from the guide, etc. prevent.

Reference numeral 15 denotes a guide shaft, which is engaged with the carriage 5 so as to be movable left and right on the shaft 15, and the carriage 5 has a rotation fulcrum that is coaxial with the motor 16 to which driving force is transmitted from the motor 16 via a belt 19. A pulley 171 is disposed on the tension plate 17, and a tension spring 172 is attached to the belt 19.
A constant tension is applied.

Further, the carriage 5 is rotatably mounted around the guide shaft 15, and the pressing portion 54 of the carriage 5 presses the surface of the pinch roller stay 8 due to its own weight. The pressing portion 54 is a slider and slides on the pinch roller stay 8 as the carriage 5 moves.

The material of the pressing portion 54 is made of a resin having particularly high sliding properties, such as Teflon. Further, the carriage 5 has a protrusion 55 near the connection with the recording head 51.
protrudes forward from the ejection surface of the recording head 51 by about 0.3 to 0.5 mm, but does not come into contact with the paper presser plate 10 under normal conditions.

In this example, 51 is a recording head that uses thermal energy to form ink droplets for recording, and has ejection orifices arranged in the paper feeding direction and ejection energy generating elements corresponding to each of the orifices. . The position of the recording head 51 relative to the carriage 5 is determined by fitting the convex portion of the recording head 51 into the hole of the carriage 5 . Further, a fixed lever 52 is mounted on the carriage 5 so as to be rotatable about a fulcrum 525. This fixing lever 52 has an elastic part that generates a pressing force when fixing the recording head 51 to the carriage 5.
The fixing lever 52 is locked by engaging the fixing lever hook part of the fixing lever 2 with the hook part of the carriage 5, thereby fixing the recording head 51 to the carriage 5. The connection portion between the recording head 51 and the carriage 5 will be described later.

Further, the carriage 5 is provided with a paper width sensor for detecting the width and presence of a recording medium when the carriage 5 moves. This paper width sensor is installed so that its detection position is near the ejection orifice of the recording head 51 located at the most downstream position in the paper feeding direction. Furthermore, a protrusion 57 is provided near the portion of the carriage 5 that engages with the top of the guide shaft 15 to release the engagement of the locking claw 665 of the paper feeding mechanism, and a protrusion 57 is provided to disengage the lock claw 665 of the paper feeding mechanism. It contacts the lock claw 665 at a predetermined position and releases the engagement. The carriage 5 also has a cap positioning pin, which is used for positioning when the carriage 5 retreats to the recovery device position during non-recording and caps the recording element surface of the recording head 51.

150 is an ejection recovery device that caps the ejection surface of the recording head 51 and sucks ink;
is arranged on one side of the movement path outside the recording area.

In the ejection recovery device 150, 156 is the recording head 51.
The cap 156 is provided with a positioning lever 157 that engages with a positioning bin of the carriage 5. Reference numeral 18 denotes an ink cartridge for storing ink to be supplied to the recording head 51, and includes a drain liquid collection section for storing drain ink sucked by capping.

Reference numeral 79 denotes a power supply unit, which is fixed on the bottom plate 1002 so that its heat dissipation plate is directly below the paper discharge tray.

The operation of the configuration described above will be described below.

During non-recording, the carriage 5 is attached to the cap 1 of the recovery device 150.
6 and is in a recording standby state. When recording data is received from the host computer or data transfer device, the carriage 5 starts moving to release the lock claw 665 located on the opposite side of the movement path from the recovery device 150. When the lock claw 665 is released, the lock ring 664 becomes free and the rotation of the separation roller gear 662 can be transmitted to the separation roller shaft 65 and the pressure plate push-down cam 661, and the separation roller 65 and the pressure plate push-down cam 661 are rotated by the motor drive. start. After starting to drive the motor, the carriage 5 moves to a position that does not prevent the lock claw 665 from returning to the position where it can return due to its own elasticity (the position where it engages with the lock ring 664), and waits. When the pressure plate pushing down cam 661 starts rotating, the pressure plate 61
is moved upward by the bias of the pressure plate spring 62, and the separation roller 6
5, and as the separation roller 65 rotates, the recording paper is fed to the position of the separation bar; drawer 6. here,
Only one sheet of recording paper is fed by the ladder separation roller 65 and the separation pad 66 to the position of the paper feed roller 7 and the pinch roller 81 within one revolution of the separation roller 551.

When the claw of the lock song 664 reaches the position of the lock claw 665 again, the rotation of the lock ring 665 is blocked and the rotation of the separation roller 65 is stopped.

Normally, the paper feeding operation ends with one rotation of the separation roller 65, but if the length to the paper feed roller 7 is longer than the circumference of the separation roller 65 due to the configuration of the device, the separation roller 65 may be rotated multiple times. It turns out. In that case, the carriage 5 waits at the position where the engagement of the lock claw 6δ5 is released until the final rotation begins. In paper feeding operation,
When the leading edge of the recording paper is detected by the paper end sensor located between the paper feed roller 7 and the separation roller 65, the rotation of the paper feed roller rough is stopped after the recording paper is fed by a predetermined amount from that position. Paper feeding and recording paper cueing are completed.

Thereafter, the carriage 5 returns to the recovery device 150 side. At this time, a paper width sensor provided on the carriage 5 detects the paper width and the presence or absence of paper. If the paper feeding operation is performed normally, the width of the recording paper, that is, the size of the recording paper is detected, and no recording is made outside the recording paper. If no recording paper is detected, it is determined that there is a paper feed failure, an error occurs, and the process stops.

To prevent such a paper feeding failure from occurring, the disengagement operation of the lock claw 665 is performed at least twice when the carriage 5 is feeding the paper.

After paper feeding is completed as described above, the carriage 5 reciprocates in the width direction of the recording paper, and along with this, the paper feed roller 7 feeds the paper every line recorded by the recording head 51 and continues recording. Let's do it. At this time, the gap between the recording head 51 and the recording paper surface is determined by the pressing portion 54 of the carriage 5 sliding on the pinch roller stay 8. That is, since the pinch roller stay 8 is provided with the pinch roller 81, when the recording paper enters between the paper feed roller 7 and the pinch roller 81, the pinch roller stay 8 moves toward the carriage 5 by that amount. Therefore, even if the thickness of the recording paper changes, the pinch roller stay 8 moves accordingly, so that a constant gap is always maintained.

The recorded recording paper passes over a hot plate 11 for fixing ink and is sent between a paper discharge roller 12 and a paper discharge pinch roller 13. The trailing edge of the recording paper is the paper feed roller rough and the pinch roller 81
After the gap is removed, the paper ejection roller 12 and the paper ejection pinch roller 1
3, and after recording the last line, the paper is sent to the paper discharge tray 101O. This paper output tray 10
The recording paper fed into the recording paper 10 undergoes ink fixation and the like by heat generated from the heat sink of the power supply section 79 located directly below the paper discharge tray 1010.

By the way, when the recording paper is a thick paper such as an envelope or a postcard, when the recording paper is removed from between the paper feed roller 7 and the pinch roller 81, the carriage protruding portion 55 causes the paper press plate 10 to protrude toward the carriage side due to the thickness of the paper. Since it slides on the top, the ejection surface of the recording head 51 does not need to directly rub the surface of the recording paper.

The above operations complete recording on one sheet of recording paper, and the same operations are repeated thereafter.

FIG. 4 is a perspective view showing a detailed configuration example of a recording system unit including a recording head 51, a carriage 5, etc., and FIG.
) ~ (C) are the 8-A lines respectively.

A sectional view taken along line B-B and line C-C, FIG. 6 shows the recording head 5.
FIG. 7 is a perspective view showing an example of the structure of the carriage 5. FIG.

The recording head 51 includes a carrier, a boss 511 which is a convex part for positioning on the Fuji 5, an ink coupling part 512 for receiving ink supply, and an electrical coupling for receiving a drive signal to the ejection energy generating element. part 513, a fixing member receiver for receiving the fixing member 52 for fixing the recording head 51 on the carriage, parts 514 to 516, and the head 51;
A concave portion 517 and an ejection portion 51B in which a group of ink ejection ports are arranged are provided to improve operability during removal.

The carriage 5 includes an ink coupling portion 5 on the recording head 51 side.
Ink coupling 54 receiving 12, also electrical coupling 5
18, a hole 56 for receiving the boss 511, and a rib 57 serving as a reference for lateral positioning of the recording head 51. In this example, the ink coupling part 54 is made of an elastic member such as rubber, has a through hole for receiving the insertion of the ink coupling part 512, and communicates with a supply tube 54^ from an ink supply source (not shown). ing. Further, a taper is provided toward the hole 56 so that even if ink leaks from the ink joint, the leaked ink will not flow into the hole 56 and be transmitted to the electrical joint.

Furthermore, a fixed lever 52 is attached to the carriage 5 so as to be rotatable about a fulcrum 525.

The fixing lever 52 has elastic parts 521, 522, and 523 for fixing the recording head 51. Among these, the elastic part 521 presses the receiving part 514 of the head 51 downward, and the elastic part 522 presses the receiving part 514 of the head 51 downward. The receiver 51 presses the portion 515 forward, and the elastic portion 523 presses the guide shaft 15 on the carriage 5.
The recording head 51 is pressed against a fixed base 5-a provided at right angles to the recording head 5-a. Here, since the perpendicularity of the fixed base 5-a greatly affects the vertical line deviation during recording, the elastic force of the elastic portion 523 acts on the fixed base 5-a to prevent the perpendicularity from being destroyed due to the fall. , a protrusion 526 is provided at a position facing the elastic part 523 so that the fixing lever 52 sandwiches the receiving part 516 of the recording head 51 and the fixing base 5-a together by the elastic part 523 and the protrusion 526. There is.

Reference numeral 524 denotes a fixed lever hook part, and the hook on the carriage 5 is latched to a part 56 to lock the fixed lever 52. 527 is a claw, and the recording head 51
is provided with a hook portion 511 that engages with the pawl 527. Therefore, by opening the fixing lever 52 when replacing the recording head 51, the pawl 527 will be caught in the recess 517, and the recording head 51 will be pulled out upwards, making it possible to easily remove it and attaching the replacement recording head. Even when mounting, it can be easily and reliably done by operating the fixing lever 52. In addition, each elastic part and each hook part attached to the fixed lever 52 can be formed by integral molding.

Further, in FIG. 4, reference numeral 143 is a paper width sensor for detecting the width and presence of a recording medium when the carriage 5 moves left and right with respect to the paper conveyance surface, and the paper feed sensor 143 The sensor is mounted so that the detection position is near the recording element located at the most downstream position in the direction.

In the above configuration, as shown in FIGS. 5(A) and 5(B), the head is pressed by the elastic members 521°, 522.
523, the recording head 51 is fixed to the carriage 5. At this time, since each elastic member presses the recording head 51 against the carriage 5 from three different directions, the recording head 51 is securely fixed to the carriage 5.

Here, if the recording head 51 is fixed to the carriage 5 by pressure in less than three directions, that is, two directions or one direction, the recording head 51 must be positioned in three directions: front and back, left and right, and up and down. The position may not be determined or play may occur. If the position of the recording head shifts, a problem naturally arises in that the image of the recorded object deteriorates.

Further, by using an elastic body for the suppressing member, the following advantages can be obtained.

In a serial printer, the carriage is constantly moving or stopping during recording, and shocks are applied to the carriage. In particular, the ink supply section of the recording head of an inkjet serial printer is
If the recording head, carriage, and head are completely fixed together using an elastic material such as butyl rubber, EPDM, or silicone rubber, the carriage and recording head will bend due to the impact when the carriage moves, causing the ink to deteriorate. There is a risk of ink leaking due to a gap in the joint.

However, in this example, since the recording head is fixed with members 521 to 523, which are elastic bodies, the elastic bodies absorb the deflection of each part at the time of impact, making it difficult to create gaps in the ink supply section. Compared to the fixed head method, ink leakage is less likely to occur, and the reliability of the recording device can also be improved. Further, during normal printing, since the printing head is pressed against the positioning portion of the carriage by an elastic body, no problem arises in positioning the printing head.

Also, when replacing the recording head, the fixing member 52 allows
Since the recording head 51 is removed from the carriage 5, the operator does not accidentally short out the recording electrical connection or get his hands dirty with ink, improving reliability and operability.

Further, the recording head 51
By providing a boss 511, which is a convex portion, and a hole 56, which is a concave portion, in the carriage 5, it is possible to easily align the recording head 51 when it is attached to the carriage 5. In addition, the ink coupling parts 54, 512 and the electrical coupling parts 59,
By providing 513 in the same direction as the axes of boss 511 and hole 56, electricity and ink are coupled at the same time as recording head 51 is mounted on carriage 5. Therefore, when the operator replaces the recording head, the operator can attach the recording head with a single touch.

Further, the boss 511 is connected to the ink coupling portion 512 and the electrical coupling portion 51.
3, and the depth of the hole 56 is deeper than the electrical connection part 55 and the ink connection part 54, so when installing the recording head, the position of the head is first aligned between the boss 511 and the hole 56, Next, the electrical and ink systems are combined. Therefore, electricity and ink are coupled at a precise position, and electrical shorts, poor connections, and ink leaks do not occur.

In addition, the holes 56 are connected to the ink coupling portion 54 and the electrical coupling portion 59.
By placing it between 1. Even if ink leaks from the ink joint, or even if it spills from the ink joint during head replacement, the ink will be trapped in the hole 56 and will not reach the electrical connection. Therefore, it is possible to realize the protection function of the electrical connection portion against ink leakage. Since the depth of the large recess 56 is deeper than the electric/ink coupling part, the ink is trapped and the effect against ink leakage is further increased.

Although the hole 56 can function as a through hole, it is also possible to provide an ink absorber at the bottom of the recess to trap leaked ink.

In addition, a groove is provided from the ink joint part of the carriage 5 to the recess 56 to remove leaked or spilled ink from the recess 56.
6 may be introduced to prevent the ink from spreading to other locations.

Furthermore, although the case where one recording head is provided has been described above, it goes without saying that the number may be two or more.

[Effects of the Invention] As explained above, according to the present invention, it is possible to easily attach and detach the recording head, and to securely position or fix the recording head. The connection between the ink and the ink becomes reliable, and even in the unlikely event of ink leakage, the electrical contact portions and the like are effectively protected from the leaked ink.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an inkjet recording apparatus according to an embodiment of the present invention, FIG. 2 is a sectional view of the mounting surface shown in FIG. 1, and FIG. 3 is a partially enlarged view of the paper feeding mechanism section in FIG. 1. FIG. 4 is a perspective view showing a detailed configuration example of a recording system unit including a recording head and a carriage; FIG. 5(A);
(B) and ゛(C) are A in FIG. 4, respectively.
- A sectional view taken along line A, line B-B, and line C-C; FIG. 6 is a perspective view showing an example of the configuration of the recording head according to the present example; FIG. 7 is a perspective view showing an example of the configuration of the main part of the carriage. It is a diagram. 5... Carriage, 5-a... Fixing base, 51... Recording head, 52... Fixing member (lever), 54... Ink coupling portion, 56... Hole, (recess), 57...Rib, 59...Electrical coupling portion, 511...Boss,...Ink coupling portion,...Electrical coupling portion, ~516...Fixing member holder portion,...Recessed portion, ...discharge part, ~523...elastic part (fixing member), ...fixing lever hook part, ...fulcrum part, ...protrusion, ...claw. Figure 3 Hand diagram Figure 6 Figure 5 (A) Figure 5 (B) Figure 5 (C) 59 Electron Watashi Shizuka Figure 7

Claims (1)

[Scope of Claims] 1) A liquid jet recording device in which a recording head for ejecting a recording liquid is mounted on a movable part that moves in a predetermined direction with respect to a recording medium, wherein the movable part is configured to move in a predetermined direction with respect to the recording medium. a fixing member made of an elastic body that presses the mounting reference portion on the movable portion from at least three sides; an electric contact portion for transmitting a drive signal to an ejection energy generating element of the recording head; a liquid connecting portion for supplying the recording liquid to the recording liquid; and a recess provided between the liquid connecting portion and the electrical contact portion, the recess being deeper than the liquid connecting portion in the mounting direction of the recording head; The recording head is characterized in that it has an electric contact portion for receiving the drive signal, a liquid connection portion for receiving the supply of the recording liquid, and a convex portion that protrudes from these and can be fitted into the recessed portion. A liquid jet recording device. 2) The liquid jet recording apparatus according to claim 1, wherein the recording head forms droplets of the recording liquid using thermal energy to create an image.