JP2007007923A - Ink jet recorder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ink jet recorder equipped with a user-friendly removable recording means of simple arrangement while preventing a cartridge from falling when a recording head is attached to a carriage, ensuring a body opening by increasing the entire recorder and achieving low profile so that the document reading section is not opened upward significantly. <P>SOLUTION: In an ink jet recorder which performs recording by ejecting ink from a recording means mounted removably on a carriage movable along a recording medium, the recording means is provided with a rough guide protrusion engaging with a guide groove provided in the carriage. In order to guide to a guide portion provided in the carriage, a means for reading out a character or an image from an object to be read out arranged above a record is opened upward. Since a pocket portion into which a recording head can be set and the guide groove are provided in the front portion of the carriage, posture of a head can be retained. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an image recording apparatus, and more particularly to an ink jet recording apparatus that performs recording by ejecting ink from recording means that is detachably mounted on a carriage that is movable along a recording medium.

  In recent years, with the spread of personal computers and digital cameras, it has become possible to easily handle image information, and the demand for a recording device that is easy to output is increasing. Among the recording systems used in the recording apparatus, there is an inkjet recording system known as a system that enables relatively small, inexpensive, and high-definition recording.

  In a recording apparatus using an ink jet recording system, a carriage (CR) equipped with an ink jet head (cartridge) having several tens to several hundreds of ink discharge ports is a driving belt that transmits the driving force of a carriage driving motor. It is configured to be movable by being connected to the section.

  As a result, the ink jet cartridge can move along the platen disposed so as to face the ejection surface, and during this movement, reciprocating motion (scanning) is performed over the entire width of the recording medium fed onto the platen, and recording is performed. It can be carried out. The recording medium is conveyed by a sheet conveying means for each scanning of the carriage for a distance determined according to the pitch of the ejection ports. By repeating the above scanning and conveyance of the recording medium, recording is performed on the entire surface of the recording medium.

  In an ink jet recording apparatus having recording means (recording head) detachably mounted on a carriage, a new recording head is replaced when the ink in the head cartridge as the recording means is used up or when the recording means fails. In some cases, it is possible to easily return to a recordable state. In addition, in recent years, ink jet printing apparatuses with advanced functions have been developed, and by replacing a permanent print head (such as a head cartridge) with an optional head such as a photo cartridge, output (recording) of photo-like photo images and the like. An ink jet recording apparatus configured to enable the above-mentioned has been widely used.

  In the conventional carriage configuration, in order to electrically connect the recording head and the recording apparatus main body, a substrate (head substrate) or an FPC having a conductor exposed portion not subjected to resist is provided on the recording head side. In many cases, a pressure contact connector for electrical connection with the conductor exposed portion of the recording head is provided on the carriage for mounting the printer. This pressure contact connector is usually one in which a metal is plated and pressed against a conductor exposed portion of the recording head using elastic deformation of the metal. Further, the pressure contact connector is soldered to a board (carriage board) mounted on the carriage, and the board on the carriage is connected to a circuit board (control circuit) on the apparatus main body side via FFC or FPC. Are electrically coupled.

  However, in the above prior art, depending on the number of electrical contacts between the recording means and the carriage, a large force is required to press the recording means against the carriage. As a result, the operation force required for mounting the recording means on the carriage becomes very large. For this reason, in order to prevent deformation of the fixing member on which the recording means is mounted, a special material having high rigidity is used for the mechanism portion of the fixing member, or complicated operation is required to reduce the operating force of the fixing member. It was necessary to use a link mechanism.

In order to solve such a problem, there is known an ink jet recording apparatus provided with means capable of inserting a recording head from the front surface of the recording apparatus and fixing it to a movable carriage.
JP 2004-90343 A

  However, in the conventional configuration described above, the recording head needs to be replaced by inserting an ink jet head or an ink tank from above the recording apparatus main body. The fixing member of the recording head is provided with a rotatable operation unit, and the user performs setting by rotating the operation unit. In such a case, it is necessary to secure a sufficiently large space in which the recording head can pass by opening the cover on the upper part of the main body and the space in which the operation unit rotates.

  Furthermore, in recent years, devices such as inkjet multifunction devices (multifunction printers) that can not only record from a PC but also copy originals by combining an inkjet recording device and a flatbed scanner have become widespread. In the multi-function device, since an original reading unit is provided in the upper part of the recording apparatus, it is necessary to mount the cartridge to the carriage while holding the cartridge deeply in the apparatus, and there is a problem that the user operation is complicated. Further, in order to improve the operability by the conventional method, it is necessary to enlarge the entire recording apparatus to secure the opening of the main body, or to open the document reading part greatly upward.

  Therefore, as another conventional example, there is a configuration in which the user holds the cartridge from the front and inserts it into the carriage of the recording apparatus. However, in the above-described configuration, it is necessary to hold the cartridge until it is securely mounted on the carrier, and there is a possibility that the cartridge may fall if the user makes a mistake in the mounting operation method. Even when the recording apparatus is detached from the carriage, if the user does not securely hold the cartridge, the cartridge is dropped. The ink ejection part of the recording head as the recording means is very delicate and easily clogged or damaged, so that it may not be used even when dust or the like adheres due to dropping. Therefore, it is an important issue to prevent the cartridge from dropping when the cartridge is attached to or detached from the user's main body.

  In addition, an inkjet multifunction device often has a document reading unit above the recording unit and an operation unit in front of it. In this case, if you try to insert a cartridge from the front, the operation unit will look into you and you will not be able to attach or remove the cartridge. There was a problem that it should not be.

  The present invention has been made in view of the above-described conventional problems, and an object thereof is to prevent the cartridge from dropping when the recording head is mounted on the carriage and to improve operability when the cartridge is attached / detached. An object of the present invention is to provide an ink jet recording apparatus having the above configuration.

  In order to achieve the above object, the present invention provides an inkjet recording apparatus that performs recording by ejecting ink from recording means that is detachably mounted on a carriage that is movable along a recording medium. The rough guide protrusion is engaged with a guide groove provided on the carriage, and a character or image is read from an object to be read arranged substantially above the recording in order to guide the guide portion provided on the carriage. The image reading means for reading the image is opened upward, and a pocket portion and a guide groove in which the recording head can be set once are provided in the front portion of the carriage, so that the user can easily set the recording means. This prevents the nozzle discharge part from being damaged by the nozzle and prevents dust from adhering to the nozzle part. It is to provide an ink jet recording apparatus using the de.

  Further, the first invention of the present invention will be described as follows.

(1) A detachable recording head for performing recording by discharging ink, a carriage mounted with the recording head and movable along a recording medium, a rough guide projection provided on the recording head, and the carriage An ink jet recording apparatus comprising: a guide groove provided on a recording head; a recording head guide member having a guide portion that guides the guide groove; and an image reading unit that reads characters and images from an object to be read disposed substantially above the recording. In
The recording head guide member is provided on the front side of the carriage in the recording head insertion direction, the recording head guide member is provided with a pocket for temporarily setting the recording head, and the rough guide protrusion provided on the recording head is provided with the rough guide protrusion. An ink jet recording apparatus, wherein a guide portion provided on a head guide member is engaged with a guide groove provided on the carriage.

  According to the present invention, in the operation of attaching / detaching the recording head to / from the apparatus, it is used by being dropped from the recording apparatus at the time of insertion or removal from the carriage, damaging the ink discharge portion, or clogging with dust etc. It can be prevented from becoming impossible. Furthermore, the entire recording apparatus can be made larger than necessary to secure the opening of the main body, and the space through which the recording head can pass can be minimized. There is no need to open the door. It is possible to provide an ink jet recording apparatus that uses a detachable recording head that has a simple and inexpensive configuration and is easy to use while realizing a low profile with a low apparatus height.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the same reference numerals denote the same or corresponding parts throughout the drawings.

  FIG. 1 is a schematic perspective view showing a configuration of a recording unit A provided with a sheet conveying apparatus according to an embodiment of the present invention, and shows a case where the recording apparatus A is an ink jet recording apparatus that records ink on a recording medium. Show.

  FIG. 2 shows a case in which the reading unit B and the operation unit C are rotatably mounted above the recording unit A.

  The recording apparatus according to the present embodiment is roughly divided into a reading unit B, an operation unit C, a paper feeding unit 37, a recording medium conveying unit (paper conveying unit), a recording unit head 200, and a recording head (recording unit) maintenance unit. 36. Recording data is sent from a reading unit or a host device (not shown), stored in the recording device control unit (not shown) on the control board, and a recording operation start command is issued from the control unit to perform the recording operation. Starts.

  When recording starts, a paper feeding operation is first performed. The sheet feeding unit is a main ASF (Automatic Sheet Feeder), and the sheet feeding unit 37 receives one recording sheet for each recording operation from a plurality of recording media (recording sheets) stacked on the pressure plate 41. The automatic paper feeding unit is pulled out and sent to a recording medium conveyance unit (paper conveyance unit). An ASF motor (not shown) rotates at the start of the paper feeding operation, and the power rotates the cam holding the pressure plate 41 via the gear train. When the cam is removed by the rotation of the ASF motor, the pressure plate 41 is urged toward the paper feed roller 39 by the action of a pressure plate spring (not shown). At the same time, the paper feed roller 39 rotates in the direction in which the recording medium (paper) is conveyed, so that conveyance of the uppermost sheet of the recording medium loaded is started. At that time, a plurality of recording sheets may be sent out at the same time depending on the conditions of the frictional force between the sheet feeding roller 39 and the recording sheet and the frictional force between the recording sheets.

  In that case, a separation roller (not shown) that is pressed against the paper feed roller 39 and has a predetermined return rotational torque in the direction opposite to the recording sheet conveyance direction acts, and this separation roller is the recording sheet closest to the paper feed roller 39. It works to push back the recording sheet other than the original pressure plate. At the end of the ASF sheet feeding operation, the separation roller is released from the pressure contact state with the sheet feeding roller 39 by the operation of the cam and is separated by a predetermined distance. At that time, the recording sheet is surely moved to a predetermined position on the pressure plate. In order to push back, a return claw (not shown) rotates and plays a role. With the operation as described above, only one recording sheet is conveyed to the sheet conveying unit.

  A recording sheet as a recording medium conveyed from the paper supply unit 37 is conveyed toward a nip portion between a conveyance roller (paper feeding roller) 21 and a pinch roller 22 as a paper conveyance unit (recording medium conveyance unit). The center of the pinch roller 22 is attached to the center of the transport roller 21 with a slight offset in a direction approaching a paper discharge roller (not shown), so that the tangential angle at which the recording sheet is inserted is slightly higher than the horizontal. Tilted. Therefore, the sheet is conveyed at an angle through a sheet passing path formed by the pinch roller holder 23 and a guide member (sheet passing guide) (not shown) so that the leading end of the sheet is accurately guided to the nip portion. .

  A sheet (recording sheet) conveyed (feeded or fed) by the sheet feeding unit 37 is abutted against the nip portion of the conveying roller 21 in a stopped state. At this time, a paper loop is formed between the paper feed roller 39 and the transport roller 21 by transporting the distance a little longer than the predetermined paper path length by the ASF 37. When the leading edge of the sheet is pressed against the nip portion of the conveying roller 21 with a force that the loop returns straight, the leading edge of the sheet becomes parallel to the conveying roller 21 and the so-called registration removing operation is completed. After the registration operation is completed, the rotation (forward rotation) of an LF motor (conveyance motor) (not shown) is performed in the direction in which the recording sheet moves in the forward direction (the direction in which the recording sheet advances toward the paper discharge roller). Start.

  Thereafter, the paper feeding roller 39 is cut in driving force and is rotated with the recording sheet. At this time, the recording sheet is conveyed only by the conveying roller 21 and the pinch roller 22. The recording sheet advances in the positive direction for every predetermined line feed amount, and advances along the rib provided on the platen 29.

  The leading edge of the paper is gradually applied to the nip portion of the paper discharge roller and the spur train 32, but the peripheral speed of the paper discharge roller is set to be substantially equal to the peripheral speed of the transport roller 21, and the transport roller 21 and the paper discharge roller are connected by a gear train. Therefore, the paper discharge roller rotates in synchronization with the conveyance roller 21, so that the recording sheet is conveyed without being loosened or pulled.

  The recording unit mainly includes a recording head 200 as recording means, and a carriage 100 that mounts the recording head 200 and scans (moves) in a direction crossing (usually orthogonal) to the recording sheet conveyance direction. The carriage 100 is guided and supported by a guide rail 14 fixed to the chassis 10 and a support rail 15 that is a part of the chassis 10, and a carriage belt 16 that is stretched between a carriage motor 17 and an idler pulley 20. In this way, a driving force of a carriage motor (not shown) is transmitted to reciprocate (scan).

  A plurality of ink flow paths are formed inside the recording head 200, and the ink flow paths communicate with ejection ports arranged on a surface (ejection port surface) facing the platen 29. Ink discharge actuators (energy generating means) are arranged inside each of the plurality of discharge ports forming the discharge port array. As this actuator, for example, an actuator using a liquid film boiling pressure by an electrothermal transducer (heat generating element), an electromechanical transducer (electric-pressure transducer) such as a piezo element, or the like is used.

  In an ink jet recording apparatus using the above recording head 200 as a recording apparatus, a head driver (not shown) signal is transmitted to the recording head 200 via a flexible flat cable 73, so that ink can be used in accordance with recording data. It is possible to eject drops. Further, by reading the code strip 18 stretched on the chassis 10 with a CR (carriage 100) encoder mounted on the carriage 100, ink droplets can be ejected toward the recording sheet at an appropriate timing. In this way, when the recording for one line is completed, the recording sheet is conveyed (paper fed) by a necessary amount by the sheet conveying unit (recording medium conveying unit). By repeating this operation, the recording operation over the entire surface of the recording sheet becomes possible. The above is the outline of the recording apparatus.

  On the other hand, as shown in FIG. 2, the reading unit B provided with the operation unit C in front of the apparatus has a rotation center 5 at the back of the apparatus and is configured to be rotatable. By rotating the reading unit B toward the rear of the apparatus, a space required for replacing the recording head is opened. Reference numeral 2 denotes a reading unit that optically reads a document, and 3 denotes a pressure plate that presses the document or the like placed on the reading unit 2.

  FIGS. 3A and 3B are perspective views of a recording head as recording means. In the present embodiment, the recording means (recording head) and the ink reservoir (ink tank) are integrated and exchangeable. An ink jet cartridge (head cartridge) is used. In the case of normal color recording, the recording head is provided with a black cartridge 200A as a recording means in the recording means accommodating portion, and a three-color cartridge 200B (cyan, magenta, yellow) as a recording means in the recording means accommodating portion. ) Is used. It is also possible to use a photo cartridge (not shown) (black, light cyan, light magenta) as an optional head instead of the black cartridge when recording in photographic tone photo color.

  The head cartridges 200A and 200B and the photo cartridge as the optional head have substantially the same shape and size. FIG. 3 shows a typical shape 200A of the recording head according to the present embodiment. As shown in FIG. 3, a positioning groove 202 is formed at the lower part of both side surfaces of the head cartridge main body 200A, and a rough guide projection 203 is formed at a position on the contact surface in front of the positioning groove 202 on both side surfaces. Has been.

  4 is a schematic perspective view showing a state in which the black cartridge head 200A and the color cartridge 200B of FIG. 3 are mounted on the carriage 100 in FIG. 1 and 4, the carriage 100 is driven by a drive mechanism including a carriage motor and a carriage belt 16 and reciprocates along the guide rail 14. The carriage 100 includes side walls 103 and middle portions on both sides. A wall 104 is provided. An accommodating portion (recording means accommodating portion) of a head cartridge as recording means is formed between the side wall 103L and the middle wall 104 of the carriage 100, and the head is also located between the side wall 103R and the inner wall 104. A cartridge accommodating portion (recording means accommodating portion) is formed. 1 and 4 show a state in which a black cartridge 200A and a three-color cartridge 200B as a permanent head are mounted on the carriage 100. FIG.

  FIG. 5 is a perspective view showing only the carriage 100 unit. In FIG. 5, thick portions are provided on both lower portions of both sides of the inner wall 104 of the carriage 100 and lower portions of the inner surfaces of the side walls 103R and 103L, and these thick portions serve as recording means. Positioning protrusions 101 are provided to engage the positioning grooves 202 of the head cartridges 200A and 200B. The head cartridges 200A and 200B are provided at relatively lower portions of the side walls 103 and the middle wall 104 of the carriage 100 so that the head cartridges 200A and 200B are guided in the correct insertion direction when the head cartridges 200A and 200B are mounted. A guide groove 105 for guiding the rough guide protrusion 203 is formed. Further, the carriage 100 can be easily introduced and fixed with a connector 120 for making electrical connection by contacting a wiring board (not shown) provided in each head cartridge 200A, 200B, and each head cartridge 200A, 200B. In order to do so, a headset cam 110 is provided that is pressed downward by a compression spring (headset spring 111).

  Next, the operation when the head cartridge 200B (also the same as 200A) as a recording unit is attached to and detached from the carriage 100 will be described. FIG. 6 is a schematic perspective view showing a state at the time of mounting, and FIG. 7 is a schematic longitudinal sectional view of the recording means. 8 to 11 are schematic views showing a state in the middle of mounting of the recording means, FIG. 12 is a schematic longitudinal sectional view showing a state when the recording head 200B is in a locked state, and FIG. 13 is a schematic perspective view. FIG.

  First, the user opens the document reading portion B upward. The carriage 100 is configured to move to a cartridge replacement position by a sensor (not shown) that detects opening and closing of the document reading section B. A head guide 13 is provided in front of the cartridge replacement position so that the user can visually recognize the carriage 100 and the head guide 13 with the document reading portion B opened upward (FIG. 2).

  The user holds the cartridge main body 200B and sets the rough guide projection 203 of the head cartridge 200B in the pocket 13b of the head guide member 13 (FIGS. 6 and 7). Since the pocket is slightly larger than the outer periphery of the head cartridge 200B and is open upward, an image of setting the head cartridge 200B in the D direction can be recalled to the user. At that time, the rough guide projection 203 is set so as to contact the guide groove 13a.

  By engaging the rough guide projection 203 with the guide groove 13a of the head guide member 13, the head cartridge 200B (the same as the head cartridge 200A) is guided in the direction of arrow E (the back of the apparatus) while maintaining a constant posture. . As shown in FIG. 8, the front side of the head guide member 13 is provided with a notch 13c so that a finger can be inserted when the head cartridge 200B is pushed inward.

  As shown in FIG. 9, the rough guide protrusion 203 of the head cartridge comes into contact with the guide groove 105 on the carriage 100 that is configured to be substantially the same height as the guide groove 13 a of the head guide member 13. At this time, since the guide groove 105 of the carriage 100 is configured to have the same height as the guide groove 13 a of the head guide member 13, the rough guide protrusion 203 does not interfere with or collide with the carriage 100. The mounting operation of the cartridge 200B is not hindered. In this state, the posture is maintained even when the user releases his / her hand. At this time, both sides of the contact surface of the face surface including the ink discharge portion 201 of the head cartridge are configured to contact the head guide member 13.

  Subsequently, when the head cartridge 200B is pushed in the direction of arrow E, the head cartridge 200B is configured to drop downward from the guide groove 105 of the carriage 100 (FIG. 11).

  Here, the head cartridge 200B is positioned and fixed in the headset state (FIG. 12) by rotating in the F direction.

  Since the lateral displacement of the head cartridge 200B (same for 200A) is restricted by the side walls 103 of the carriage 100 and the middle wall 104, the rough guide protrusion 203 and the guide groove 105 are engaged. The guide function when the recording means (head cartridge) 200 is inserted can be sufficiently exhibited.

  In this way, the head cartridge 200 is mounted on the carriage 100 in a stable state. In this mounted state, the electrical connection between the head cartridge 200 and the connector 120 is also completed.

  In the state in which the head cartridge 200B of FIG. 12 is fixed, the rough guide projection 203 is located in the widened portion (wide space) of the guide groove 105 and is movable. Therefore, the head cartridge This does not hinder the operation of fixing 200B (200A) at a predetermined position.

  On the other hand, when the head cartridge 200B (200A) is taken out from the carriage 100, the head cartridge body 200B may be pulled out contrary to the above-described insertion.

  That is, first, the head cartridge 200B is pushed down in the direction of arrow G in FIG. When the head cartridge 200B is pushed down in the direction of arrow G, the fixing of the head cartridge 200B (200A) by the headset cam 110 is released, and the state shown in FIG. 11 is obtained. When the head handle convex portion 205 is dragged in the arrow H direction from the state of FIG. 11, the head cartridge 200B rotates clockwise around the positioning groove 202 of the head cartridge 200B and the positioning protrusion 101 on the carriage 100, and finally. As shown in FIG. 10, the rough guide protrusion 203 is rotated and guided to a position where it engages with the guide groove 105 of the carriage 100.

  When the head is rotated clockwise in attaching and detaching the head 200B, the head cartridge is sufficient to rotate so that the face surface including the ink ejection unit 201 and the cartridge itself do not interfere with each other and cause damage or the like. A space is formed.

  Subsequently, by dragging the cartridge main body 200B in the direction of arrow H, the rough guide projection 203 is extracted along the guide groove 105 of the carriage 100 toward the front in the main body discharge direction. At this time, when the rough guide projection 203 advances to the tip of the guide groove 105 on the carriage 100, the guide groove 13a of the head guide 13 provided on the front surface of the main body and the guide groove 105 of the carriage 100 become substantially the same height. Since it is configured and the minute step is tapered, the rough guide projection 203 does not interfere with or collide with the guide groove portion 13a of the head guide member 13. The head cartridge 200B extends to the pocket portion 13b of the head guide member 13, and the rear portion far from the contact surface of the face surface including the ink outlet portion 201 of the head cartridge 200B is in contact with the head guide member 13. . Accordingly, an ink jet recording apparatus using the head cartridge 200 as a detachable recording unit that is simple and inexpensive and excellent in usability is provided.

  In the recording apparatus of this configuration, the maximum recordable paper size is LTR. Therefore, in the recording apparatus of this configuration, the head guide member 13 is located on the side opposite to the maintenance unit 36 with respect to the recording range, and the acceleration start position of the carriage 100 during so-called borderless printing of the LTR which is the maximum recording range. It is possible to configure without increasing the width of the entire apparatus. Furthermore, in the recording apparatus of this configuration, the head guide member 13 is a carriage 100 acceleration start position on the side opposite to the maintenance unit 36 with respect to the recording range, and thus forms a preliminary discharge port for receiving the preliminary discharge of the head cartridge 200. It is also possible to do.

  The carriage 100 and the recording means (head cartridge) 200 of the ink jet recording apparatus as one embodiment described above with reference to FIGS. 1 to 13 prevent a drop that may occur due to the attaching / detaching operation of the recording means without the user's particular awareness. Thus, an ink jet recording apparatus provided with a detachable recording means that has a simple configuration and is easy to use is provided.

  In the embodiment shown in FIGS. 1 to 13, the case where two recording units (recording head and head cartridge) 200 </ b> A and 200 </ b> B are mounted on the carriage 100 has been described as an example. It can be freely implemented regardless of the number, and in addition to an inkjet recording apparatus using one recording head, an inkjet recording apparatus for color recording using a plurality of recording heads using different color inks, or the same color The present invention can be similarly applied to an inkjet recording apparatus for gradation recording using a plurality of recording heads that use inks of different concentrations, and further, an inkjet recording apparatus that combines these, and achieves the same effect. It is possible.

  Furthermore, the present invention uses a replaceable ink jet cartridge (head cartridge) in which the recording means (recording head 200) and the ink reservoir (ink tank) are integrated, and the recording means and the ink reservoir are separated, The present invention can be similarly applied to any arrangement of the recording means and the ink reservoir, such as a configuration in which the ink is connected by an ink supply tube or the like, and the same effect can be obtained.

  The present invention can be applied to an ink jet recording apparatus that uses an ink jet recording head 200 that uses an electromechanical transducer such as a piezo element. In particular, the ink is ejected using thermal energy. In the ink jet recording apparatus using the ink jet recording head 200 of the above method, an excellent effect is brought about. This is because according to such a method, high density and high definition of recording (print) can be achieved.

1 is a schematic perspective view illustrating an overall configuration of an ink jet recording apparatus according to an embodiment of the present invention. 1 is a schematic perspective view illustrating an overall configuration of an inkjet multifunction peripheral according to an embodiment of the present invention. FIG. 2 is a schematic perspective view showing a recording head as recording means according to an embodiment of the present invention. FIG. 3 is a schematic perspective view illustrating a state where the recording head of the carriage unit according to the embodiment of the invention is mounted. FIG. 5 is a schematic perspective view illustrating a state before the recording head is mounted on the carriage unit according to the embodiment of the invention. FIG. 3 is a schematic perspective view showing a state at the start of mounting of a recording head according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view showing a state at the start of mounting of a recording head according to an embodiment of the present invention. FIG. 5 is a schematic perspective view showing a state during the recording head mounting operation according to the embodiment of the invention. FIG. 5 is a schematic cross-sectional view illustrating a state during the recording head mounting operation according to the embodiment of the invention. FIG. 5 is a schematic cross-sectional view illustrating a state during the recording head mounting operation according to the embodiment of the invention. FIG. 5 is a schematic cross-sectional view illustrating a state during the recording head mounting operation according to the embodiment of the invention. FIG. 6 is a schematic cross-sectional view illustrating a state where the recording head is completely mounted according to an embodiment of the present invention. FIG. 5 is a schematic perspective view illustrating a recording head mounting completion state according to an embodiment of the present invention.

Explanation of symbols

1. Recording device body (recording unit body)
DESCRIPTION OF SYMBOLS 2 Reading part 3 Pressure plate 4 Center of rotation 10 Chassis 13 Head guide member 13a Head guide member guide groove 13b Head guide pocket part 13c Head guide notch 14 Guide rail 15 Support rail 16 Carriage belt 17 Carriage motor 21 Carriage roller (LF roller, Paper feed roller)
22 Pinch roller 23 Pinch roller holder 29 Platen 32 Spur train (rotating body)
36 Maintenance unit (discharge recovery device)
37 Main ASF (automatic paper feeder)
39 Feed roller 41 Pressure plate 100 Carriage 101 Carriage positioning protrusion 103 Carriage outer wall 104 Carriage inner wall 105 Carriage guide groove 110 Headset cam 111 Headset spring 120 Connector 200A Recording head (black cartridge)
200B recording head (color cartridge)
201 Nozzle part 202 Positioning groove 203 Rough guide protrusion 204 Head pressing part 205 Head handle part a
206 Head handle b

Claims (3)

A detachable recording head for recording by discharging ink, a carriage mounted with the recording head and movable along a recording medium, a rough guide projection provided on the recording head, and a carriage provided on the carriage In an ink jet recording apparatus having a guide groove, a recording head guide member having a guide portion that guides to the guide groove, and an image reading unit that reads a character or an image from an object to be read disposed substantially above the recording,
The recording head guide member is provided on the front side of the carriage in the recording head insertion direction, the recording head guide member is provided with a pocket for temporarily setting the recording head, and the rough guide protrusion provided on the recording head is provided with the rough guide protrusion. An ink jet recording apparatus, wherein a guide portion provided on a head guide member is engaged with a guide groove provided on the carriage.   The image reading unit is configured to be opened upward so that the recording unit is exposed when the image reading unit is opened, and the pocket unit has a shape that is visible to an operator. Item 10. The ink jet recording apparatus according to Item 1.   3. The head guide member according to claim 1, wherein a guide portion is disposed so that the recording head is mounted on the carriage at a rising position of the carriage for recording the maximum recording range. The ink jet recording apparatus described.

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