JP4487904B2 - Inkjet recording device - Google Patents

Description

The present invention, Lee inkjet recording apparatus, and more particularly, by ejecting ink, relates to an ink jet recording equipment for performing predetermined recording on paper or the like.

  2. Description of the Related Art Conventionally, an ink jet recording apparatus is well known as a recording apparatus having a relatively simple configuration and easy high speed printing and high quality printing. The ink jet recording apparatus usually includes an ink jet head for performing predetermined recording on a sheet or the like by ejecting ink, a head holder that supports the ink jet head and is attached to a carriage that moves in the left-right direction, And an ink cartridge that is detachably attached to the head holder and contains ink.

  Ink cartridges usually have an ink supply port at the bottom for supplying ink to the ink jet head. When the ink cartridge is installed in the head holder, the ink supply port is locked to the head holder side. At the same time, the lever member that is swingable up and down provided on the upper part of the head holder is pushed down from above the ink cartridge, and is brought into contact with and pressed on the upper part of the ink cartridge so that it is fixed to the head holder. ing.

  However, when such an ink cartridge is mounted, the ink cartridge is only fixed by locking the ink supply port at the bottom and pressing the lever member at the top. When moved in the left-right direction, the ink cartridge also swings left and right and rotates or twists with the ink supply port as a fulcrum, resulting in uneven ink in the ink cartridge and poor ink use This causes problems such as

  On the other hand, if a separate locking member or the like is provided in order to prevent the ink cartridge from shaking to the left and right, the configuration becomes complicated and the ink cartridge attachment / detachment operation becomes complicated.

  The present invention has been made in view of such problems, and the object of the present invention is to ensure that the ink cartridge can be reliably fixed to the head holder with a simple configuration, and the ink cartridge An object of the present invention is to provide an ink cartridge and an ink jet recording apparatus to which the ink cartridge can be detachably attached, which can be easily and surely attached to the head holder.

In order to achieve the above object, an invention according to claim 1 is an ink jet recording apparatus having an ink jet head and detachably mounted with a predetermined number of ink cartridges for storing ink to be supplied to the ink jet head. A pair of side plates and a rear plate connected between the rear end portions of the pair of side plates and having a locking portion formed at the upper end portion; a lower end portion of the pair of side plates; A bottom plate covering the lower end portion, an opening, a support plate supported by the bottom plate, and swingable around a rear end located above the rear plate, A lever member having a fitting groove formed on a lower surface thereof, and the ink cartridge is formed at a front end portion at a bottom portion of the ink cartridge, and is locked to the opening portion of the support plate when the ink cartridge is mounted. And the ink jet A first cartridge side locking portion serving also as an ink supply port for supplying ink to the head; and a rear end portion at an upper portion of the first cartridge side locking portion, formed diagonally to the first cartridge side locking portion, A second cartridge side locking portion that locks to the locking portion when the ink cartridge is mounted; and a fitting protrusion that is formed at the front end portion of the upper portion and is fitted into the fitting groove. The first cartridge side locking portion is provided on the front side of the center of gravity of the ink cartridge, and the second cartridge side locking portion is on the rear side of the center of gravity of the ink cartridge. The first cartridge side locking portion is locked to the opening in a posture in which the upper end side of the ink cartridge is inclined forward, and the first cartridge side locking is The ink cartridge is mounted by rotating the second cartridge side locking portion to the locking portion, and the ink cartridge is mounted. The lever member is rotated downward, and the fitting groove is fixed by being fitted to the fitting protrusion .

According to such a configuration, when mounting of the ink cartridge, if the locking the first cartridge-side engaging portion provided on the front end portion at the bottom opening of the supporting plate, by its own weight, the ink The cartridge is tilted rearward as it is, and the second cartridge side locking portion provided at the rear side end portion at the upper portion is locked to the locking portion formed at the upper end portion of the rear plate . Therefore, the ink cartridge can be easily and reliably mounted .

Further, since the first cartridge side locking portion also serves as an ink supply port, if the locking the first cartridge side locking portion, separately, without requiring an operation for mounting the ink supply port As it is, ink can be supplied from the ink cartridge to the inkjet head. Therefore, it is possible to achieve the mounting of the ink cartridge with a simpler configuration and with a simple operation.

Further, when mounting of the ink cartridge, if locked in the first cartridge side locking portion on the front side than the center of gravity of the ink cartridge, ink cartridges, as a fulcrum the first cartridge side locking portion The second cartridge side latching portion that is reliably rotated in the direction of the center of gravity and located behind the center of gravity of the ink cartridge is latched. Therefore, the ink cartridge can be mounted easily and reliably by only the operation of locking the first cartridge side locking portion.

As described above, according to the invention described in claim 1, Ru can be equipped with an ink cartridge with respect to easily and reliably the head holder.

  FIG. 1 is a perspective view showing a color ink jet printer as an embodiment of the ink jet recording apparatus of the present invention to which an ink cartridge as an embodiment of the ink cartridge of the present invention is mounted. In FIG. 1, the color inkjet printer 1 includes a carriage 6 on which a head holder 5 including an ink cartridge 2 and an inkjet head 4 is mounted, a drive mechanism 7 that reciprocates the carriage 6 in a linear direction, and a carriage 6. A platen roller 8 extending in the reciprocating direction and disposed opposite to the inkjet head 4 and a purge device 9 are provided.

  As will be described in detail later, four ink cartridges 2 filled with inks of four colors of cyan, magenta, yellow, and black are detachably attached to the head holder 5, and each ink cartridge 2 is attached to the head holder 5. Correspondingly, four inkjet heads 4 for printing on the paper 3 are respectively mounted, and the head holder 5 is mounted on the carriage 6.

  The drive mechanism 7 includes a carriage shaft 10 disposed at the lower end portion of the carriage 6 and extending in parallel with the platen roller 8, a guide plate 11 disposed at the upper end portion of the carriage 6 and extending in parallel with the carriage shaft 10, and the carriage shaft 10. Two pulleys 12 and 13 disposed between the guide plate 11 and both ends of the carriage shaft 10, and an endless belt 14 spanned between the pulleys 12 and 13 are provided.

  A carriage shaft support portion 15 through which the carriage shaft 10 can be inserted is provided at the lower end portion of the carriage 6, and a guide plate contact portion 16 that can contact the guide plate 11 is provided at the upper end portion of the carriage 6. ing. An endless belt 14 is joined to the rear side of the carriage 6.

  When one pulley 12 is rotated forward and backward by driving the motor 17, the carriage 6 joined to the endless belt 14 is moved along with the forward and reverse rotation of the pulley 12 to the carriage shaft 10 and the guide plate 11. And is reciprocated in a linear direction.

  The paper 3 is fed from a paper feeding cassette (not shown) provided on the side of the ink jet printer 1, introduced between the ink jet head 4 and the platen roller 8, and predetermined by ink ejected from the ink jet head 4. Is printed, and then discharged. In FIG. 1, the paper feed mechanism and paper discharge mechanism for the paper 3 are not shown.

  The purge device 9 is provided on the side of the platen roller 8 and is disposed so as to face the inkjet head 4 that is moved to the reset position. The purge device 9 is used to prevent ejection failure due to ink retention or bubble growth at the initial introduction of ink into the inkjet head 4, and includes a suction cap 18 that can cover the inkjet head 4, and a pump. 19, a cam 20, and an ink reservoir 21. When the inkjet head 4 is at the reset position, the inkjet head 4 is covered with the suction cap 18 by driving the cam 20, and bubbles accumulated inside the inkjet head 4. The ink jet head 4 is recovered by sucking the defective ink containing the ink by the pump 19. The sucked defective ink is stored in the ink storage unit 21.

  At the reset position of the inkjet head 4, a wiper blade 22 for wiping the ejection surface of the purged inkjet head 4 and a head cap 23 for covering the inkjet head 4 when printing is stopped are provided together with the purge device 9. . A waste ink receiving member 24 for receiving ink preliminarily ejected immediately before the printing operation by the ink jet head 24 is provided on the side opposite to the reset position of the platen roller 8.

  2 is a cross-sectional view showing a state where the ink cartridge 2 is mounted on the head holder 5, FIG. 3 is a rear view of the ink cartridge 2 (ink cartridge other than black), and FIG. 4 is a plan view of the head holder 5. It is. Next, the ink cartridge 2, the inkjet head 4, and the head holder 5 will be described in detail with reference to FIGS.

  As shown in FIG. 1, the ink cartridge 2 is provided for each color of cyan, magenta, yellow, and black. The ink cartridges 2C, 2M, and 2Y filled with cyan, magenta, and yellow ink are respectively provided. In contrast, the ink cartridge 2 </ b> K filled with black ink that is used more frequently is formed to be slightly wider, and these are sequentially attached to the head holder 5 along the movement direction of the carriage 6.

  As shown in FIG. 2, each ink cartridge 2 includes a rectangular cylindrical case member 25 whose top is opened and whose bottom is closed, and an upper lid member 26 that covers the upper surface of the case member 25. 25, a porous material chamber 28 that stores a porous material 27 that has absorbed ink, an ink chamber 29 that stores ink, and an air communication chamber 30 that communicates the porous material chamber 28 with the atmosphere are partitioned. Is formed.

  In the case member 25, a front wall 31, a rear wall 32, both side walls 33 and 34 (see FIG. 3) and a bottom wall 35 are integrally formed. The front partition wall 36 and the rear partition wall 37, which are disposed opposite to each other with a predetermined interval and are laid between the side walls 33 and 34 so as to partition the front-rear direction of the case member 25, and inside the bottom wall 35 There is provided a bottom partition wall 38 which is disposed to be opposed to each other with a predetermined interval and is constructed between both side walls 33 and 34 so as to close the lower end portions of the front partition wall 36 and the rear partition wall 37. It is formed as a double wall structure. Further, a partition wall 39 is provided between the bottom wall 35 and the bottom partition wall 38 and at a substantially central portion in the front-rear direction of the case member 25 so as to partition a space formed therebetween in the front-rear direction. Is provided.

  The porous material chamber 28 is formed between the side walls 33 and 34 as an inner space partitioned by the front partition wall 36, the rear partition wall 37, and the bottom partition wall 38. A porous material 27 made of urethane foam or the like is accommodated in the porous material chamber 28 while absorbing ink.

  The ink chamber 29 is between the side walls 33 and 34, and is defined by the front wall 31 and the front partition wall 36, and the vertical space, and the bottom wall 35 and the bottom partition wall. 38 and a space on the front side in the horizontal direction defined by the dividing partition wall 39, a space having a substantially L-shaped cross section is formed.

  The atmosphere communication chamber 30 is between the side walls 33 and 34, and is defined by a vertical space defined by the rear wall 32 and the rear partition wall 37, and continues to the space. A space having a substantially L-shaped cross section is formed by a space on the rear side in the horizontal direction defined by the partition wall 38 and the partition wall 39.

  In the ink chamber 29, a communication hole 40 for allowing the porous material chamber 28 and the ink chamber 29 to communicate with each other is formed in the bottom side partition wall 38 in the vicinity of the front side of the partition wall 39. An ink supply port 41 as a first locking portion for supplying ink from the ink chamber 29 to the inkjet head 4 is formed through the front end portion of the wall 35 (front end portion at the bottom of the ink cartridge 2). Has been.

  The ink supply port 41 is located in front of the center of gravity of the ink cartridge 2, and a ring-shaped front concave portion 42 that can be locked to a seal member 57 described below is recessed upward from the bottom surface of the bottom wall 35. In addition, a filter 43 is provided on the upper surface.

  Further, in the atmosphere communication chamber 30, the bottom wall 35 is formed with an atmosphere opening port 44 that is open to the atmosphere, and the upper end portion communicates the porous material chamber 28 and the atmosphere communication chamber 30. An air communication passage 45 having a substantially inverted U-shaped cross section is formed.

  The case member 25 is formed with a locking member 46 as a second locking portion at the upper end portion (the rear side end portion at the top of the ink cartridge 2) of the rear wall 32, and at the bottom wall 35. A rear recess 47 is formed at the rear end (the rear end at the bottom of the ink cartridge 2).

  The locking member 46 is located on the rear side of the center of gravity of the ink cartridge 2 and, as shown in FIG. 3, as shown in FIG. A pair of locking side plates 48 and 49 and a locking upper plate 50 that covers the space between the upper ends of the locking side plates 48 and 49 are formed in a substantially U-shape that opens downward, A pair of locking side plates 48 and 49 facing each other can be fitted in each locking groove 72 (see FIG. 4) of the head holder 5 described later, and between them, the head holder 5 described later The locking projection 71 (see FIG. 4) is formed to be receivable.

  FIG. 3 shows cyan, magenta, and yellow ink cartridges 2C, 2M, and 2Y. The black ink cartridge 2K is formed wider than these ink cartridges 2C, 2M, and 2Y. Yes.

  The rear concave portion 47 is located rearward of the center of gravity of the ink cartridge 2 and has a rectangular shape when viewed from the bottom along the front-rear direction from the bottom surface of the bottom wall 35 and has a substantially semicircular shape when viewed from the side cross section. Are recessed upward.

  Further, the upper lid member 26 has a substantially rectangular plate shape and is attached so as to cover the upper surface of the case member 25, and is fitted into a fitting groove 75 of a lever member 73 described later at the front side end portion of the upper surface. The mating projection 51 is formed so as to project upward, and a receiving groove 52 for receiving a pressing projection 76 of a lever member 73 described later is formed at the center of the upper surface thereof.

  Further, the ink head 4 is provided corresponding to each ink cartridge 2 and is supported by the lower part of the head holder 5 as shown in FIG.

  Each inkjet head 4 is joined to an actuator 53 having a plurality of ejection channels (not shown) for ejecting ink as droplets from nozzles, and an upper surface of the actuator 53, and ink is ejected to each ejection channel of the actuator 53. And a manifold 54 for supply.

  The manifold 54 is integrally formed with a cylindrical ink introduction portion 55 for introducing ink from the ink cartridge 2 and an ink supply portion 56 for distributing and supplying ink to each ejection channel of the actuator 53.

  A cylindrical seal member 57 made of an elastic material is fitted and fixed to an upper end portion of the ink introduction portion 55 that has entered a later-described opening 67 of the support plate 65, and is fixed to the bottom wall 35 of the ink cartridge 2. The formed front concave portion 42 is elastically fitted into the upper end portion of the seal member 57, whereby the ink supply port 41 of the ink chamber 29 is connected to the ink introduction portion 55 through the seal member 57.

  The ink absorbed in the porous material 27 of the ink cartridge 2 is supplied from the porous material chamber 28 to the ink chamber 29 through the communication hole 40, and the ink supplied to the ink chamber 29 is the ink The ink is supplied from the supply port 41 to the ink supply unit 56 via the ink introduction unit 55, and further distributed and supplied from the ink supply unit 29 into each ejection channel of the actuator 53. The actuator 53 is made of a piezoelectric ceramic material or the like, and the ink supplied into each ejection channel of the actuator 53 is ejected as a droplet from the nozzle when the volume decreases due to the deformation of the actuator 53, while when the volume increases, Ink is again introduced into the ejection channel from the ink supply unit 56. By repeating such an operation, a predetermined print is formed on a sheet or the like.

  As shown in FIGS. 2 and 4, the head holder 5 includes a pair of side plates 58 and 59 disposed opposite to each other in the width direction (movement direction of the carriage 6), and the rear ends of the pair of side plates 58 and 59. A bottom plate 61 that covers the space between the bottom plate 61 that connects between the bottom plate 61, the lower end portions of the pair of side plates 58 and 59, and the lower end portion of the rear plate 60. And a front receiving plate 62 extending in the form of a substantially L-shaped cross section with the front side open, and is integrally mounted on the carriage 6 on the rear side.

  The bottom plate 61 is formed with an opening 63 for projecting each inkjet head 4 downward, and a locking step 64 that is opposed to each other at a predetermined interval in the front-rear direction along the width direction. The support plate 65 for supporting each ink cartridge 2 is detachably locked to the locking step portion 64.

  As shown in FIG. 4, the support plate 65 includes a partition plate 66, an opening 67 facing the ink supply port 41 of each ink cartridge 2 at its front end, and a rear end at each rear end. A rear convex portion 68 facing the rear concave portion 47 of the ink cartridge 2 is formed corresponding to each ink cartridge 2.

  In other words, each partition plate 66 is arranged along the front-rear direction so as to partition each ink cartridge 2 at a predetermined interval corresponding to the width of each ink cartridge 2 in the width direction of the support plate 65. ) Is formed.

  With this partition plate 66, each ink cartridge 2 is mounted between one side plate 58 and the partition plate 66, between each partition plate 66, and between the other side plate 59 and the partition plate 66, respectively. As shown, the four ink cartridges 2 are mounted in parallel along the width direction of the head holder 5 (the moving direction of the carriage 6).

  In addition, each opening 67 corresponds to each ink cartridge 2, and a support plate 65 between one side plate 58 and the partition plate 66, between each partition plate 66, and between the other side plate 59 and partition plate 66. (Four) openings are respectively formed at the front end portions of the first and second seals, and the seal members 57 are bonded and fixed in the respective opening portions 67 so as to protrude upward.

  Further, each rear projection 68 corresponds to each ink cartridge 2 and is supported between one side plate 58 and the partition plate 66, between each partition plate 66, and between the other side plate 59 and partition plate 66. At the rear end of the plate 65, (four) are formed to protrude. Each rear protrusion 68 has a rectangular shape in plan view along the front-rear direction from the upper surface of the support plate 65 so as to be able to be engaged with each rear recess 47, and has a substantially semicircular shape in a side sectional view. Are projected upward.

  Further, the rear plate 60 is formed such that the upper end portion thereof is inclined rearward, and a locking portion 69 that faces the locking member 46 of each ink cartridge 2 is formed on one side plate 58 at the upper end portion. And the partition plate 66, between the partition plates 66, and between the other side plate 59 and the partition plate 66.

  Each locking portion 69 includes a guiding groove 70 as a guiding portion for guiding the locking member 46 of each ink cartridge 2 and a locking projection 71 formed in the guiding groove 70.

  The guide groove 70 has substantially the same width as the width of each ink cartridge 2 (that is, the locking portion 69K to which the black ink cartridge 2K is mounted is wide), and is substantially U in plan view opened to the front side. It has a letter shape, and both end portions thereof are formed wide toward the front side in order to satisfactorily attract the locking side plates 48 and 49 of each ink cartridge 2.

  Further, the locking protrusion 71 has a substantially rectangular shape in plan view extending in the width direction at a substantially central portion in the width direction in each of the guide grooves 70, and is separated from both ends of the guide groove 70 by a predetermined interval. In this state, it is formed so as to protrude upward, and between the both end portions of the guide groove 70 and the locking projection 71 is a locking groove portion 72 that can lock the locking side plates 48 and 49. .

  A lever member 73 that can face the upper lid member 26 of each ink cartridge 2 is supported at the upper end of the carriage 6 so as to be swingable in the vertical direction. The lever member 73 is provided such that its rear end is inserted and supported by a swing shaft 74 supported by the carriage 6 so that the lever member 73 can rotate and move up and down around the swing shaft 74. A fitting groove 75 that receives the fitting protrusion 51 of the upper lid member 26 is formed on the lower surface of the front side, and a pressing protrusion that is inserted into the receiving groove 52 of the upper lid member 26 at the center of the lower surface. 76 is formed. In addition, an elastic contact member 78 that is elastically contacted with the upper surface of the upper lid member 26 is provided between the fitting groove 75 and the pressing protrusion 76, and the upper end of the carriage 6 is disposed on the rear upper surface of the lever member 73. A locking claw portion 77 that can be locked to the wall 6a of the portion is formed to protrude upward.

  The lever member 73 is always in an open state indicated by an imaginary line and moved up and down with respect to the swing shaft 74 by a biasing force of a spring (not shown) provided around the swing shaft 74. Has been. When the ink cartridge 2 is mounted, the front end portion of the lever member 73 is rotated downward against the urging force of the spring, and the elastic contact member 78 is elastically contacted with the upper surface of the upper lid member 26. At the same time, when the fitting projection 51 of the upper lid member 26 is received by the fitting groove 75 and the pressing projection 76 is inserted into the receiving groove 52 of the upper lid member 26, the locking claw portion 77 is urged by the biasing force of the spring. Ascended and locked to the front end of the wall 6 a of the carriage 6. Therefore, the ink cartridge 2 is fixed to the head holder 5 while being pressed downward by the lever member 73. Further, when the lever member 73 is pushed down to release the locking claw 77 from the wall 6a, the lever member 73 is released.

  Next, attachment of each ink cartridge 2 to the head holder 5 will be described.

  In order to attach the ink cartridge 2 to the head holder 5, first, as shown in FIG. 5, the front concave portion 42 of the ink supply port 41 formed at the front end portion of the bottom wall 35 of the ink cartridge 2 is attached to the support plate. The seal member 57 protruding from the opening 67 of the 65 is fitted. Then, since the front concave portion 42 is in front of the center of gravity of the ink cartridge 2, the ink cartridge 2 is reliably rotated in the direction of the center of gravity with the front concave portion 42 as a fulcrum, that is, tilted rearward by its own weight, The locking side plates 48 and 49 of the locking member 46 located behind the center of gravity of the ink cartridge 2 are favorably guided by the guide groove 70. At this time, as shown in FIG. 6, the outer surfaces of the upper end portions of the locking side plates 48 and 49 are the same as the outer surfaces of the side walls 33 and 34 of the ink cartridge 2 and It has a taper surface substantially corresponding to the arcuate taper surface. Furthermore, the upper end of the locking protrusion 71 is positioned slightly lower than the upper end portion of the guide groove 70. For this reason, before the locking projection 71 enters between the locking side plates 48 and 49, the tapered surfaces of the locking side plates 48 and 49 correspond to the tapered surface of the guide groove 70, and the center position of the ink cartridge 2 is reached. The ink cartridge 2 is guided so that it substantially coincides with the center of the guide groove 70 even if it is slightly displaced in the width direction, and is locked in each locking groove 72 of the locking portion 69 (that is, locking) The locking projection 71 of the portion 69 is fitted between the locking side plates 48 and 49). At the same time, similarly, the rear concave portion 47 on the rear side of the center of gravity of the ink cartridge 2 is engaged with the rear convex portion 68 of the support plate 65.

  Therefore, the ink cartridge 2 can be easily and reliably attached to the head holder 5 by simply inserting the front concave portion 42 into the seal member 57.

  Then, as described above, the ink cartridge 2 may be fixed to the head holder 5 by rotating the lever member 73 downward and bringing it into contact with the upper lid member 26.

  The ink cartridge 2 thus mounted is not only fixed by the lever member 73 but also fitted between the front concave portion 42 at the front end of the bottom wall 35 of the ink cartridge 2 and the seal member 57 of the head holder 5. And the locking of the locking member 46 and the locking portion 69 of the head holder 5 at the upper end of the rear wall 32 are diagonally locked, and the bottom wall 35 of the ink cartridge 2 is further locked. By engaging the rear concave portion 42 at the rear end and the rear convex portion 68 of the head holder 5, the front end of the bottom wall 35, the upper end of the rear wall 32, and the rear of the bottom wall 35 in the ink cartridge 2. Since it is locked and fixed at three positions on the side end, even if the head holder 5 moves in the left-right direction at high speed due to the movement of the carriage 6, That the cartridge 2 is swung to the left and right, it can be effectively prevented. As a result, it is possible to reduce the occurrence of bias in the ink during printing, and it is possible to ensure that the ink is used up satisfactorily.

  In such an ink cartridge 2, the ink cartridge 2 is locked to the head holder 5 by fitting the front recess 42 at the front end of the bottom wall 35 of the ink cartridge 2 with the seal member 57 of the head holder 5. At the same time, since the ink flow path between the ink cartridge 2 and the ink jet head 4 can be connected, the ink cartridge can be used as it is without requiring the operation of attaching the ink supply port 41 to the head holder 5 separately. The ink can be supplied from 2 to the inkjet head 4. Therefore, the mounting of the ink cartridge 2 can be achieved with a simpler configuration and with a simple operation.

  When the ink cartridge 2 is mounted on the head holder 5, the locking side plates 48 and 49 of the locking member 46 are well guided by the guide groove 70, and the locking portions 69 are locked. Since it is locked in the groove portion 72, the mounting of the ink cartridge 2 to the head holder 5 can be achieved more easily and reliably.

  For this reason, in the color inkjet printer 1 including the ink cartridge 2 and the head holder 5, the ink cartridge 2 is securely attached to the head holder 5. Can be achieved.

  It should be noted that the tapered surface for guiding the locking portion 69 and the locking member 46 in the locking direction only needs to be in one direction of the guide groove 70 or the locking side plates 48 and 49. It may be between the inner surfaces of 48 and 49 and the locking projection 71. Further, the locking protrusion 71 may be omitted and the ink cartridge 2 may be positioned in the left-right direction with the guide groove 70 and the locking side plates 48 and 49.

1 is a perspective view showing an embodiment of a color ink jet printer as an ink jet recording apparatus of the present invention. FIG. 4 is a cross-sectional view illustrating a state where an ink cartridge is mounted on a head holder. It is a rear view of an ink cartridge (ink cartridge other than black). 4 is a plan view of the head holder 5. FIG. FIG. 5 is a cross-sectional view corresponding to FIG. 2 illustrating an operation of mounting the ink cartridge on the head holder. It is an expanded horizontal sectional view of a latching side plate and a guide groove part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Color inkjet printer 2 Ink cartridge 4 Inkjet head 5 Head holder 32 Rear wall 35 Bottom wall 41 Ink supply port 42 Front side recessed part 46 Locking member 47 Rear side recessed part 70 Guide groove

Claims (1)

An inkjet recording apparatus having an inkjet head and detachably mounted with a predetermined number of ink cartridges for storing ink to be supplied to the inkjet head,
A pair of side plates;
Connecting between the rear end portions of the pair of side plates, and a rear plate having a locking portion formed at the upper end portion;
A bottom plate covering a space between a lower end portion of the pair of side plates and a lower end portion of the rear plate;
A support plate having an opening and supported by the bottom plate;
A lever member that is swingable around a rear side end located above the rear plate, and in which a fitting groove is formed on the lower surface of the front side;
With
The ink cartridge is
A first cartridge that is formed at the front end portion of the bottom portion and serves as an ink supply port for engaging with the opening of the support plate and supplying ink to the inkjet head when the ink cartridge is mounted. Side locking part,
A second cartridge side latch that is formed at a position diagonal to the first cartridge side latching portion at the rear end portion at the upper portion and latches to the latching portion when the ink cartridge is mounted. And
A fitting projection formed on the front side end portion in the upper part and fitted in the fitting groove;
The first cartridge side locking portion is provided on the front side of the center of gravity of the ink cartridge, and the second cartridge side locking portion is provided on the rear side of the center of gravity of the ink cartridge,
With the posture in which the upper end side of the ink cartridge is tilted forward, the first cartridge side locking portion is locked to the opening, and tilted backward with the first cartridge side locking portion as a fulcrum. The ink cartridge is mounted by rotating and locking the second cartridge side locking portion to the locking portion. The mounted ink cartridge has the lever member facing downward. An ink jet recording apparatus, wherein the ink jet recording apparatus is fixed by being rotated and the fitting groove is fitted into the fitting protrusion.

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