JP7130404B2 - Recording head and recording device - Google Patents

Description

The present invention relates to a recording head that is used in a recording apparatus that ejects ink for recording, and that has a joint portion to which ink is supplied, and to a recording apparatus that performs recording using the recording head.

2. Description of the Related Art Among printing apparatuses that perform printing by ejecting liquid (ink) from a printing head, a printing head that is detachably attached to the printing apparatus is known. In such a printhead, since ink stored in a tank is supplied to the printhead through a flow path, a joint portion is provided to connect the flow path and the printhead. Accurate connection is required to prevent ink from leaking from the connecting portion when connecting the recording head and the flow path provided with such a joint portion.

Japanese Patent Application Laid-Open No. 2002-200002 describes a print head that includes an ink supply unit provided with an opening for supplying ink. It is described that the ink stored in the ink tank is supplied to the recording head through the ink supply unit by connecting the ink joint pipe to the opening of the ink supply unit.

JP 2011-240520 A

However, since the opening of the ink supply unit described in Patent Document 1 is exposed to the outside, ink may leak from the opening when the recording head and the ink supply unit are removed from the apparatus. Also, there is no mention of a method of making a good connection so that ink does not leak from the opening where the connection is made.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a recording head and a recording apparatus that performs recording using the recording head, in which ink contamination is suppressed when the apparatus is mounted on or removed from the apparatus.

Therefore, the recording head of the present invention includes an opening that allows ink to be transferred to and from a recording apparatus , and an ejection port that ejects the ink supplied from the opening. a shutter that closes the opening when the recording head is removed from the head holder and opens the opening when the recording head is attached to the head holder ; , is provided.

According to the present invention, it is possible to realize a recording head that suppresses ink contamination when it is attached to the apparatus or after it is removed, and a recording apparatus that performs recording using the recording head.

1 is a diagram showing an internal configuration of an inkjet recording apparatus; FIG. 3 is a block diagram showing a control configuration in the printing apparatus; FIG. FIG. 10 is a diagram showing when the recording device is in a recording state; FIG. 4 is a diagram showing a conveying route when a recording medium is fed; FIG. 4 is a diagram showing a conveying route when a recording medium is fed; FIG. 10 is a diagram showing a transport path when performing a recording operation on the back surface of a recording medium; FIG. 10 is a diagram showing when the recording apparatus is in a maintenance state; 2 is a perspective view showing a printhead and a head holder of the printing apparatus; FIG. FIG. 10 is a view showing the joint part with the shutter closed; It is the figure which showed in steps how a joint opening and a needle are connected.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram showing the internal configuration of an inkjet recording apparatus (hereinafter referred to as recording apparatus) 1 used in this embodiment. In the drawing, the x direction is the horizontal direction, the y direction (perpendicular to the paper surface) is the direction in which ejection ports are arranged in the recording head 8 described later, and the z direction is the vertical direction.

The recording apparatus 1 is a multi-function device including a print unit 2 and a scanner unit 3, and various processes related to recording operation and reading operation can be executed by the print unit 2 and the scanner unit 3 individually or in conjunction with each other. The scanner unit 3 has an ADF (automatic document feeder) and an FBS (flatbed scanner), and reads documents automatically fed by the ADF and documents placed on the document table of the FBS by the user (scanning). )It can be performed. Although the present embodiment is a multifunction device having both the printing unit 2 and the scanner unit 3, a configuration without the scanner unit 3 is also possible. FIG. 1 shows the recording apparatus 1 in a standby state in which neither recording operation nor reading operation is performed.

In the printing unit (recording unit) 2, a first cassette 5A and a second cassette 5B for containing recording media (cut sheets) S are detachably installed at the bottom of the housing 4 in the vertical direction. . The first cassette 5A accommodates relatively small recording media up to A4 size, and the second cassette 5B accommodates relatively large recording media up to A3 size in a flat stack. In the vicinity of the first cassette 5A, a first feeding unit 6A for separating and feeding the contained recording media one by one is provided. Similarly, a second feeding unit 6B is provided near the second cassette 5B. When the recording operation is performed, the recording medium S is selectively fed from one of the cassettes.

A transport roller (transport means) 7, a discharge roller 12, a pinch roller 7a, a spur 7b, a guide 18, an inner guide 19 and a flapper 11 are transport mechanisms for guiding the recording medium S in a predetermined direction. The transport rollers 7 are driving rollers arranged upstream and downstream of the recording head 8 (platen 9) and driven by a transport motor. The pinch roller 7 a is a driven roller that rotates while nipping the recording medium S together with the transport roller 7 . The discharge roller 12 is a driving roller arranged downstream of the conveying roller 7 and driven by a discharge motor. The spur 7b nips and conveys the recording medium S together with the conveying roller 7 and the discharge roller 12 arranged downstream of the recording head 8 (platen 9).

The recording apparatus 1 is provided with a plurality of motors for driving the drive rollers, and each of the drive rollers is connected to one of the plurality of motors. The correspondence relationship between the motor and the driving roller will be described later in detail.

The guide 18 is provided on the transport path of the recording medium S and guides the recording medium S in a predetermined direction. The inner guide 19 is a member extending in the y direction and has a curved side surface, and guides the recording medium S along the side surface. The flapper 11 is a member for switching the direction in which the recording medium S is conveyed during the double-sided recording operation. The ejection tray 13 is a tray for stacking and holding the recording medium S ejected by the ejection roller 12 after the printing operation is completed.

The recording head 8 of this embodiment is a full-line type color inkjet recording head, and has a plurality of ejection openings corresponding to the width of the recording medium S along the y direction in FIG. 1 for ejecting ink according to recording data. arrayed. When the recording head 8 is at the standby position, the ejection port surface 8a of the recording head 8 faces vertically downward and is capped by the cap unit 10 as shown in FIG. When performing a printing operation, the direction of the printing head 8 is changed by the print controller 202 to be described later so that the ejection port surface 8 a faces the platen 9 . The platen 9 is composed of a flat plate extending in the y direction, and supports the recording medium S on which the recording operation is performed by the recording head 8 from the back. The movement of the recording head 8 from the standby position to the recording position will be described later in detail.

The ink tank unit 14 stores four color inks to be supplied to the recording head 8 . The ink supply unit 15 is provided in the middle of the flow path connecting the ink tank unit 14 and the recording head 8, and adjusts the pressure and flow rate of the ink inside the recording head 8 to appropriate ranges. This embodiment employs a circulating ink supply system, and the ink supply unit 15 adjusts the pressure of the ink supplied to the recording head 8 and the flow rate of the ink recovered from the recording head 8 within appropriate ranges.

The maintenance unit 16 includes the cap unit 10 and the wiping unit 17 and activates them at predetermined timings to perform maintenance operations on the recording head 8 . The maintenance operation will be explained later in detail.

FIG. 2 is a block diagram showing a control configuration in the printing apparatus 1. As shown in FIG. The control configuration is mainly composed of a print engine unit 200 that controls the print section 2, a scanner engine unit 300 that controls the scanner section 3, and a controller unit 100 that controls the entire printing apparatus 1. FIG. The print controller 202 controls various mechanisms of the print engine unit 200 according to instructions from the main controller 101 of the controller unit 100 . Various mechanisms of the scanner engine unit 300 are controlled by the main controller 101 of the controller unit 100 . Details of the control configuration will be described below.

In the controller unit 100 , a main controller 101 composed of a CPU controls the entire printing apparatus 1 using a RAM 106 as a work area according to programs and various parameters stored in a ROM 107 . For example, when a print job is input from the host device 400 via the host I/F 102 or wireless I/F 103, the image processing unit 108 performs predetermined image processing on the received image data according to instructions from the main controller 101. Apply. Then, the main controller 101 transmits the processed image data to the print engine unit 200 via the print engine I/F 105 .

The printing apparatus 1 may acquire image data from the host apparatus 400 via wireless communication or wired communication, or may acquire image data from an external storage device (such as a USB memory) connected to the printing apparatus 1. Also good. A communication method used for wireless communication or wired communication is not limited. For example, Wi-Fi (Wireless Fidelity) (registered trademark) or Bluetooth (registered trademark) can be applied as a communication method used for wireless communication. As a communication method used for wired communication, USB (Universal Serial Bus) or the like can be applied. Also, for example, when a read command is input from the host device 400 , the main controller 101 transmits this command to the scanner section 3 via the scanner engine I/F 109 .

The operation panel 104 is a mechanism for the user to input/output to/from the printing apparatus 1 . A user can instruct operations such as copying and scanning, set a print mode, and recognize information of the printing apparatus 1 via the operation panel 104 .

In the print engine unit 200 , a print controller 202 configured by a CPU controls various mechanisms provided in the print section 2 while using a RAM 204 as a work area according to programs and various parameters stored in a ROM 203 . When various commands and image data are received via the controller I/F 201 , the print controller 202 temporarily stores them in the RAM 204 . The print controller 202 causes the image processing controller 205 to convert the stored image data into print data so that the print head 8 can be used for printing operations. When print data is generated, the print controller 202 causes the print head 8 to perform a print operation based on the print data via the head I/F 206 . At this time, the print controller 202 drives the feeding units 6A and 6B, the transport rollers 7, the ejection rollers 12, and the flapper 11 shown in FIG.

The conveying control unit 207 is connected to a detecting unit 212 that detects the conveying state of the recording medium S and a driving unit 211 that drives a plurality of driving rollers. 211 is used to control the transport of the recording medium S. FIG. The detection unit 212 has a detection member 20 that detects the presence or absence of the recording medium S and an encoder 21 that detects the amount of rotation of the drive roller.

While the recording medium S is conveyed by the conveyance control unit 207, the recording head 8 performs a recording operation according to instructions from the print controller 202, and print processing is performed.

The head holder control unit 208 changes the orientation and position of the recording head 8 according to the operating state such as the maintenance state and recording state of the recording apparatus 1 . The ink supply control unit 209 controls the ink supply unit 15 so that the pressure of the ink supplied to the recording head 8 is within an appropriate range. The maintenance control unit 210 controls operations of the cap unit 10 and the wiping unit 17 in the maintenance unit 16 when performing maintenance operations on the recording head 8 .

In the scanner engine unit 300 , the main controller 101 controls hardware resources of the scanner controller 302 while using the RAM 106 as a work area according to programs and various parameters stored in the ROM 107 . As a result, various mechanisms provided in the scanner section 3 are controlled. For example, the main controller 101 controls the hardware resources in the scanner controller 302 via the controller I/F 301 to transport the document placed on the ADF by the user via the transport control unit 304 and read it by the sensor 305 . . The scanner controller 302 stores the read image data in the RAM 303 . The print controller 202 converts the image data acquired as described above into print data, thereby making it possible for the print head 8 to execute a print operation based on the image data read by the scanner controller 302. .

FIG. 3 shows the recording apparatus 1 in the recording state. 1, the cap unit 10 is separated from the ejection port surface 8a of the recording head 8, and the ejection port surface 8a faces the platen 9. As shown in FIG. In this embodiment, the plane of the platen 9 is tilted about 45 degrees with respect to the horizontal direction, and the ejection port surface 8a of the recording head 8 at the recording position is also tilted horizontally so that the distance from the platen 9 is kept constant. is tilted about 45 degrees with respect to

When moving the print head 8 from the standby position shown in FIG. 1 to the print position shown in FIG. 3, the print controller 202 uses the maintenance control section 210 to lower the cap unit 10 to the retracted position shown in FIG. As a result, the ejection opening surface 8a of the recording head 8 is separated from the cap member. After that, the print controller 202 adjusts the height of the recording head 8 in the vertical direction using the head holder control unit 208 and rotates the recording head 8 by 45 degrees so that the ejection port surface 8 a faces the platen 9 . When the print operation is completed and the print head 8 is moved from the print position to the standby position, the print controller 202 performs the reverse steps.

Next, the transport path of the recording medium S in the printing section 2 will be described. When a print command is input, the print controller 202 first uses the maintenance control section 210 and the head holder control section 208 to move the print head 8 to the print position shown in FIG. After that, the print controller 202 uses the transport control unit 207 to drive either the first feeding unit 6A or the second feeding unit 6B according to the recording command to feed the recording medium S. FIG.

FIGS. 4(a) to 4(c) are diagrams showing the transport path when the A4 size recording medium S housed in the first cassette 5A is transported. The recording medium S stacked at the top in the first cassette 5A is separated from the second and subsequent recording media by the first feeding unit 6A, and is nipped between the conveying roller 7 and the pinch roller 7a. and the recording head 8 toward the recording area P. FIG. 4A shows the conveying state immediately before the leading edge of the recording medium S reaches the recording area P. FIG. The traveling direction of the recording medium S is changed from the horizontal direction (x direction) to a direction inclined by about 45 degrees with respect to the horizontal direction while being fed to the first feeding unit 6A and reaching the recording area P. be.

In the recording area P, ink is ejected toward the recording medium S from a plurality of ejection openings provided in the recording head 8 . The back surface of the recording medium S in the area to which ink is applied is supported by the platen 9, and the distance between the ejection port surface 8a and the recording medium S is kept constant. While being guided by the conveying roller 7 and the spur 7b, the recording medium S to which ink has been applied passes through the left side of the flapper 11 whose tip is tilted to the right, and along the guide 18, vertically upwards of the recording apparatus 1. be transported. FIG. 4B shows a state in which the leading edge of the recording medium S passes through the recording area P and is transported vertically upward. During recording, the recording medium S moves from the bottom to the top in the recording area P inclined about 45 degrees with respect to the horizontal direction, and its traveling direction is changed vertically upward by the conveying roller 7 and the spur 7b.

After being transported vertically upward, the recording medium S is discharged to the discharge tray 13 by the discharge roller 12 and the spur 7b. FIG. 4C shows a state in which the leading edge of the recording medium S passes through the ejection roller 12 and is ejected to the ejection tray 13 . The discharged recording medium S is held on the discharge tray 13 with the surface on which the image is recorded by the recording head 8 facing downward.

FIGS. 5(a) to 5(c) are diagrams showing the transport path when the A3 size recording medium S housed in the second cassette 5B is fed. The recording medium S stacked at the top in the second cassette 5B is separated from the second and subsequent recording media by the second feeding unit 6B, and while being nipped by the transport roller 7 and the pinch roller 7a, the platen 9 is moved. and the recording head 8 toward the recording area P.

FIG. 5A shows the conveying state immediately before the leading edge of the recording medium S reaches the recording area P. FIG. A plurality of conveying rollers 7, pinch rollers 7a, and an inner guide 19 are arranged on the conveying path from the second feeding unit 6B to the recording area P, so that the recording medium S is S-shaped. It is bent upward and conveyed to the platen 9 .

The subsequent transport path is the same as in the case of the A4 size recording medium S shown in FIGS. 4(b) and 4(c). FIG. 5B shows a state in which the leading edge of the recording medium S passes through the recording area P and is transported vertically upward. FIG. 5C shows a state in which the leading edge of the recording medium S passes through the ejection roller 12 and is ejected to the ejection tray 13 .

FIGS. 6A to 6D are diagrams showing the transport path when performing a recording operation (double-sided recording) on the back side (second side) of the A4 size recording medium S. FIG. When double-sided recording is performed, the recording operation is performed on the second side (back side) after recording on the first side (front side). The conveying process for recording the first side is the same as that shown in FIGS. Hereinafter, the transfer process after FIG. 4(c) will be described.

When the recording operation on the first side by the recording head 8 is completed and the trailing edge of the recording medium S passes the flapper 11 , the print controller 202 reversely rotates the conveying roller 7 to move the recording medium S inside the recording apparatus 1 . transport to At this time, the flapper 11 is controlled by an actuator (not shown) so that its tip is tilted to the left. It is transported vertically downward. 6A shows a state in which the leading edge of the recording medium S (the trailing edge in the recording operation on the first surface) passes the right side of the flapper 11. FIG.

After that, the recording medium S is transported along the curved outer peripheral surface of the inner guide 19 and transported to the recording area P between the recording head 8 and the platen 9 again. At this time, the second surface of the recording medium S faces the ejection port surface 8 a of the recording head 8 . FIG. 6B shows the conveying state immediately before the leading edge of the recording medium S reaches the recording area P for the recording operation on the second surface.

The transport path after that is the same as in the first surface recording shown in FIGS. 4(b) and 4(c). FIG. 6C shows a state in which the leading edge of the recording medium S passes through the recording area P and is transported vertically upward. At this time, the flapper 11 is controlled by an actuator (not shown) so that the tip thereof is tilted to the right. FIG. 6D shows a state in which the leading edge of the recording medium S passes through the ejection roller 12 and is ejected to the ejection tray 13 .

Next, maintenance operations for the recording head 8 will be described. As explained in FIG. 1, the maintenance unit 16 of this embodiment includes the cap unit 10 and the wiping unit 17, and operates these at predetermined timings to perform maintenance operations.

FIG. 7 is a diagram showing when the recording apparatus 1 is in a maintenance state. When moving the recording head 8 from the standby position shown in FIG. 1 to the maintenance position shown in FIG. 7, the print controller 202 moves the recording head 8 upward in the vertical direction and moves the cap unit 10 downward in the vertical direction. Then, the print controller 202 moves the wiping unit 17 rightward in FIG. 7 from the retracted position. After that, the print controller 202 moves the recording head 8 downward in the vertical direction to the maintenance position where the maintenance operation can be performed.

On the other hand, when moving the recording head 8 from the recording position shown in FIG. 3 to the maintenance position shown in FIG. 7, the print controller 202 moves the recording head 8 vertically upward while rotating it by 45 degrees. The print controller 202 then moves the wiping unit 17 rightward from the retracted position. After that, the print controller 202 moves the recording head 8 downward in the vertical direction to the maintenance position where the maintenance operation by the maintenance unit 16 is possible.

Characteristic items of the present invention will be described below.
FIG. 8 is a perspective view showing the recording head 8 and the head holder 90 of the recording apparatus 1. FIG. The recording head 8 is a circulation type recording head, and ink is supplied to a supply port of the recording head 8 via an ink supply unit 15, passes through the recording head 8, and is recovered from a recovery port to the ink supply unit 15. . Ink supplied from the ink supply unit 15 flows through the flow path and is supplied to the recording head 8 via the joint portion 91 . The recording head 8 is configured to be detachable from the recording apparatus 1 , and the user inserts the recording head 8 into the head holder 90 when attaching to the recording apparatus 1 . The joint portion 91 of the recording head 8 is provided on the far side in the insertion direction of the recording head 8 (downstream end in the insertion direction). Such a configuration prevents the joint portion 91 from being damaged by the user accidentally touching the joint portion 91 when replacing the recording head 8, and prevents the user from being contaminated with ink.

The head holder 90 has an opening 92 on its side surface, and the recording head 8 is inserted through the opening 92 when the recording head 8 is attached to the recording apparatus 1 . As described above, the recording head 8 of this embodiment is tilted about 45 degrees with respect to the horizontal direction during recording, and the head holder 90 is tilted when tilted.

The recording head 8 has a shutter 93 at the joint portion 91 , and when the recording head 8 is detached from the recording apparatus 1 , the shutter 93 closes the supply port and recovery port of the recording head 8 . . The shutter 93 can open and close a supply port and a recovery port of the recording head 8 , and is configured to open when the recording head 8 is inserted into the head holder 90 . As a result, the supply port and the recovery port of the recording head 8 are opened (exposed). In this manner, the shutter 93 is opened only when the recording head 8 is attached to the recording apparatus 1, and the supply port and the recovery port are opened. contamination to the user due to ink leakage. Further, when the recording head 8 is removed, the shutter 93 is closed to prevent accidental contact between the supply port and the recovery port, thereby preventing damage to the periphery of the supply port and the recovery port.

FIG. 9A is a perspective view showing the joint portion 91 of the recording head 8, showing a state in which the shutter 93 is closed. A joint portion 91 of the recording head 8 is provided with a shutter 93 as shown. The shutter 93 is slidably provided, and is biased by a spring 94 in the insertion direction of the recording head 8 indicated by an arrow. The shutter 93 is biased by the spring 94 to keep the supply port 96 and the recovery port 97 closed. In this embodiment, an example using the spring 94 as a member for urging the shutter 93 has been described, but the present invention is not limited to this, and an elastic member or the like may be used. The shutter 93 is provided with a hook 95 protruding in a direction crossing the inserting direction of the recording head 8 . When the recording head 8 is inserted into the head holder 90 , a guide projection (not shown) provided on the head holder 90 abuts against the hook 95 to generate a force against the biasing force of the spring 94 . After that, when the recording head 8 is further pushed in, the shutter 93 is moved (slid) relative to the recording head 8 and opened. That is, by continuing to insert the recording head 8 while the guide protrusion of the head holder 90 and the hook 95 are in contact with each other, the shutter 93 moves against the bias of the spring 94 and the supply port 96 and the recovery port 97 are opened. is exposed. Thus, the shutter 93 is configured so that both the supply port 96 and the recovery port 97 can be opened or closed at the same time.

FIG. 9B is a perspective view showing the joint portion 91 of the recording head 8, showing a state in which the shutter 93 is open. When the recording head 8 is inserted into the head holder 90 (the head holder 90 is omitted), the shutter 93 is opened and the needle supply port 96 and the needle recovery port 97 are opened as shown in the figure. The supply port 96 opens within an opening provided in the shutter 93 . Since the recording apparatus 1 performs recording using inks of four colors, the supply port 96 and the recovery port 97 each have four openings corresponding to the four colors. Note that the number of openings is not limited to four.

Thus, when the recording head 8 is removed from the recording apparatus 1, the opening on the supply side and the opening on the collection side are closed by the shutter 93, thereby preventing the user from being contaminated with ink when replacing the recording head 8. can be prevented.

Rod-like positioning pins (guide members) 98 and 99 are provided near the supply port 96 and the recovery port 97, respectively, so that the positions of the supply port 96 and the recovery port 97 can be guided with the shutter 93 closed. is provided. A joint 110 (see FIG. 10) connected to (the needle having) the supply port 96 and the recovery port 97 is positioned by positioning pins 98 and 99 . The positioning pins 98 and 99 are configured to be always exposed whether the shutter 93 is closed or open. The positioning pins 98 and 99 are longer than each needle, and the tips of the positioning pins 98 and 99 protrude from the shutter 93 even when the shutter 93 is closed. Further, the tip portions of the positioning pins 98 and 99 are tapered so as to guide the positioning openings of the joints to be connected so as to position them at appropriate positions. In this embodiment, two positioning pins 98 and 99 are provided on the supply side and the recovery side, respectively, but the present invention is not limited to this. The number of positioning pins provided on each of the supply side and the recovery side may be singular or plural.

10A to 10D, the recording head 8 is inserted into the recording apparatus 1, and the joint opening 111 of the joint 110 is connected to the needle 112 provided in the supply port 96 and recovery port 97 of the joint portion 91. It is the figure which showed the mode that it is done step by step. Since the structure of the joint 110 is the same on the supply side and the recovery side, one of them will be described below as an example. The joint 110 includes a joint opening (joint portion) 111 connected to the needle 112 and a positioning opening (positioning portion) 113 connected to the positioning pin.

First, when the recording head 8 is inserted into the recording apparatus 1 along the arrow as shown in FIG. A force is generated that opposes the bias of At this stage the shutter 93 is still closed. After that, when the recording head 8 is further pushed in, the recording head 8 reaches a predetermined position and slides in the direction opposite to the arrow shown in FIG. )reference). The length of the locating pin 98 is longer than the length of the needle 112 as described above. Therefore, when connecting to the joint 110, the positioning pin 98 and the positioning opening 113 of the joint 110 are fitted prior to the fitting of the joint opening 111 and the needle 112 (see FIG. 10(c)). At this time, since the taper 114 is provided at the tip of the positioning pin 98 , the positioning opening 113 of the joint 110 is guided by the taper 114 of the positioning pin 98 and fitted at an appropriate position.

After the positioning opening 113 and the positioning pin 98 are fitted together, the joint opening 111 and the needle 112 are fitted together (see FIG. 10(d)). At this time, since the joint 110 is already in the proper position due to the fitting between the positioning opening 113 and the positioning pin 98, the joint opening 111 and the needle 112 can be accurately fitted. Accurate fitting in this manner can prevent ink from leaking from the fitting portion.

In this manner, the joint portion 91 of the recording head 8 is provided with the positioning pin 98 longer than the needle 112, and the shutter 93 is provided to close the openings on the supply side and the recovery side when the recording head 8 is removed. As a result, it is possible to realize a recording head that suppresses ink contamination during attachment to the apparatus and after removal, and a recording apparatus that performs recording using the recording head.

8 recording head 15 ink supply unit 90 head holder 91 joint part 93 shutter 95 hook 96 supply port 97 recovery port 98 positioning pin 99 positioning pin 110 joint 111 joint opening 112 needle 113 positioning opening

Claims (12)

A recording head capable of recording by being attached to a head holder of the recording device, the recording head comprising an opening through which ink can be transferred to and from a recording device, and an ejection port for ejecting the ink supplied from the opening. ,
a shutter that closes the opening when the recording head is removed from the head holder and opens the opening when the recording head is attached to the head holder ;
A recording head comprising: 2. A recording head according to claim 1, further comprising a guide member capable of guiding the position of said opening when said shutter is closed. 3. The apparatus according to claim 1, wherein the opening is a supply port for supplying ink to the recording head and a recovery port for collecting ink from the recording head provided at the tip of the needle. recording head. 4. A recording head according to claim 3, wherein said supply ports are a plurality of supply ports corresponding to ink colors, and said recovery ports are a plurality of recovery ports corresponding to ink colors. 3. A recording head according to claim 2, wherein said guide member is a rod-shaped member protruding from said shutter , and has a tapered tip. 6. The recording head according to any one of claims 1 to 5, wherein the opening is provided at a downstream end portion of the recording head in an inserting direction into the head holder . 7. When the recording head is removed from the head holder, the shutter is urged by a spring in the recording head insertion direction and slides to close the opening. The recording head according to any one of . The shutter has a hook projecting in a direction intersecting the insertion direction of the recording head. When the recording head is inserted into the head holder , the hook abuts on a protrusion provided on the head holder . 8. A recording head according to claim 7, wherein said shutter opens against the bias of said spring. 6. A recording head according to claim 2, wherein said guide member is connectable to a joint portion of a joint connected to said recording head, and said opening is connectable to a positioning portion of said joint. 10. The recording head according to claim 1, wherein the ejection openings are arranged in the width direction of the conveyed recording medium. a head holder to which the recording head according to any one of claims 1 to 10 is mounted;
and an ink supply unit that supplies ink to the recording head mounted on the head holder . and a recording head according to any one of claims 1 to 10 for recording on the recording medium conveyed by the conveying means, wherein the recording head conveys the recording medium. A recording apparatus characterized by tilting with respect to a horizontal direction when recording.

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