JP5861340B2 - Recording device - Google Patents

Description

  The present invention relates to a recording apparatus in which a plurality of printing fluid cartridges are mounted on a cartridge mounting portion.

  2. Description of the Related Art Conventionally, ink jet type image recording apparatuses are known. In this image recording apparatus, ink droplets are ejected from the nozzles of the recording head toward the recording paper. The ink droplets land on the recording paper and a desired image is recorded. In this image recording apparatus, an ink cartridge for storing ink to be supplied to the recording head is provided so as to be attachable / detachable.

  In an image recording apparatus capable of color recording, ink cartridges of a plurality of colors are mounted. Each ink cartridge stores one color ink. Therefore, a plurality of ink cartridges are respectively attached to the image recording apparatus. In order to prevent color mixing and aggregation due to ink mixing, the positions where the plurality of ink cartridges should be mounted are specified in the cartridge mounting portion.

  When the ink in the ink cartridge is consumed, the user removes the ink cartridge and installs a new ink cartridge. Such replacement of the ink cartridge is assumed to be performed simultaneously with a plurality of ink cartridges, for example. When replacing the ink cartridge, the cover of the cartridge mounting portion is opened, the ink cartridge that has consumed ink is removed from the cartridge mounting portion, and a new ink cartridge is mounted on the cartridge mounting portion. When all of the plurality of ink cartridges to be replaced are replaced, the cover of the cartridge mounting portion is closed (see Patent Document 1).

JP 2007-196651 A

  Even if the color and type of stored ink is different, the case of the ink cartridge is used for reasons such as reducing manufacturing costs, and the same shape is used, and labels with different colors and indications can be attached. Therefore, it is often configured to be able to determine the color and type of ink. Therefore, if the user misreads the label, it is assumed that the ink cartridge is mounted at a position different from the original in the cartridge mounting portion.

  In addition, for example, even if the width of the ink cartridge housing varies depending on the amount of ink that can be stored, the narrow ink cartridge is erroneously installed at the position where the wide ink cartridge should be installed. Is assumed. As described above, when the ink cartridge is mounted at an incorrect position in the cartridge mounting section, ink color mixing or aggregation may occur. When ink color mixing or aggregation occurs, a cleaning operation is required to eliminate the state, and the amount of ink consumed for cleaning increases.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide means for preventing erroneous mounting of a printing fluid cartridge in a recording apparatus in which a plurality of printing fluid cartridges can be mounted. .

  The present invention relates to a recording apparatus provided with a cartridge mounting portion on which a plurality of printing fluid cartridges can be mounted through openings. The cartridge mounting portion changes its posture between a case in which the printing fluid cartridge is inserted through the opening and a rotation posture around the rotation shaft to close the opening and open the opening. A flat lid. The lid has a curved portion in which one end side in the width direction along the rotation shaft is curved so that the end surface on the one end side faces the end surface side of the case in the closed posture. The first printing fluid cartridge to be inserted into one end of the lid of the case has a corner along the height direction of the rear wall in the direction of insertion into the case, and the curved portion of the lid in the closed posture. It is chamfered so that it does not contact. The second printing fluid cartridge to be inserted to the case other than one end side of the lid of the case, the corner portion along the height direction of the rear wall in the insertion direction to the case changes its posture from the open posture to the closed posture. The posture change to the closed posture is restrained by contacting the curved portion of the lid.

  Since the first printing fluid cartridge is chamfered at the corner of the rear wall, the type can be easily determined from the outer shape. Since the corner portion of the rear wall of the second printing fluid cartridge comes into contact with the curved portion of the lid in the closed posture, the second printing fluid cartridge is mounted on one end side of the lid on which the first printing fluid cartridge is to be mounted. The lid cannot be closed. By not closing the lid, the user recognizes the erroneous mounting of the second printing fluid cartridge.

  According to the present invention, it is possible to prevent erroneous mounting on the cartridge mounting portions of the first and second printing fluid cartridges.

FIG. 1 is a schematic cross-sectional view schematically showing an internal structure of a printer 10 including a cartridge mounting unit 110 according to an embodiment of the present invention. FIG. 2 is a perspective view showing the external configuration of the ink cartridge 30B according to the embodiment of the present invention. FIG. 3 is a top view showing the external configuration of the ink cartridge 30B according to the embodiment of the present invention. FIG. 4 is a perspective view showing an external configuration of the ink cartridge 30CL according to the embodiment of the present invention. FIG. 5 is a top view showing the external configuration of the ink cartridge 30CL according to the embodiment of the present invention. FIG. 6 is an external perspective view showing the configuration of the cartridge mounting portion 110 as an embodiment of the present invention. FIG. 7 is a front view showing the configuration of the cartridge mounting portion 110 as an embodiment of the present invention. FIG. 8 is a cross-sectional view showing a state where the ink cartridge 30 </ b> B is mounted at an appropriate position of the cartridge mounting unit 110. FIG. 9 is a cross-sectional view illustrating a state where the ink cartridge 30CL is mounted at a position where the ink cartridge 30B is to be mounted. FIG. 10 is a cross-sectional view showing a state where an ink cartridge 30CL as a modification of the present invention is mounted on the cartridge mounting portion 110. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings as appropriate. The embodiment described below is merely an example in which the present invention is embodied, and it is needless to say that the embodiment can be appropriately changed without departing from the gist of the present invention.

[Overview of Printer 10]
As shown in FIG. 1, the printer 10 records an image by ejecting ink droplets from a recording head 21 onto a recording sheet. The printer 10 includes an ink supply device 100. The ink supply device 100 is provided with a cartridge mounting portion 110. A plurality of ink cartridges 30 </ b> B and 30 </ b> CL can be mounted on the cartridge mounting unit 110. The cartridge mounting portion 110 is provided with an opening 112 whose one surface is open to the outside. The plurality of ink cartridges 30 </ b> B and 30 </ b> CL are each inserted into the cartridge mounting unit 110 through the opening 112, or are each extracted from the cartridge mounting unit 110.

  Ink that can be used by the printer 10 is stored in the ink cartridges 30B and 30CL. The ink cartridge 30B stores pigment black ink. The three ink cartridges 30CL store dye-based inks of cyan, magenta, and yellow, respectively. In a state where the ink cartridges 30B and 30CL are mounted on the cartridge mounting portion 110, the ink cartridges 30B and 30CL and the recording head 21 are connected by the ink tube 20. The recording head 21 is provided with a sub tank 28. The sub tank 28 temporarily stores the ink supplied through the ink tube 20. The recording head 21 selectively ejects the ink supplied from the sub tank 28 from the nozzles 29 by the ink jet recording method.

  The recording paper fed from the paper feed tray 15 to the transport path 24 by the paper feed roller 23 is transported onto the platen 26 by the transport roller pair 25. The recording head 21 selectively ejects ink of each color onto the recording paper passing over the platen 26. Thereby, an image is recorded on the recording paper. The recording sheet that has passed through the platen 26 is discharged by a discharge roller pair 22 to a discharge tray 16 provided on the most downstream side of the transport path 24.

  Note that the schematic configuration of the printer 10 according to the present embodiment is merely an example. For example, other configurations in a known inkjet printer may be employed for the recording paper feeding method, the conveying method, the shape of the conveying path, and the like. Needless to say, it is good.

[Ink supply apparatus 100]
As shown in FIG. 1, the ink supply device 100 includes a cartridge mounting portion 110 into which the ink cartridge 30 can be mounted. FIG. 1 shows a state where the ink cartridge 30B is mounted on the cartridge mounting portion 110. The ink cartridge 30B corresponds to the first printing fluid cartridge. The ink cartridge 30CL corresponds to the second printing fluid cartridge.

[Ink cartridge 30B]
As shown in FIG. 1, the ink cartridge 30B includes, for example, an ink chamber 36 in which at least ink is stored. Black ink is stored in a space formed inside the ink cartridge 30B. The ink chamber 36 may be, for example, a space formed by the casing 31 that forms the appearance of the ink cartridge 30 </ b> B, or may be formed by a member that is disposed inside the casing 31 and is different from the casing 31. It may be a space to be formed.

  The ink cartridge 30B is in the standing state shown in FIG. 2, that is, the front wall 40 with the lower surface in the drawing as the lower surface (lower wall 41) and the upper surface in the drawing as the upper surface (upper wall 39). An ink supply unit 43 is disposed on the lower side of the cartridge, and is inserted into or removed from the cartridge mounting unit 110 along a direction indicated by an arrow 50 (hereinafter referred to as “insertion and removal direction 50” (see FIG. 6)). . That is, the ink cartridge 30 </ b> B is inserted into the cartridge mounting unit 110 in the upright state along the insertion and removal direction 50, and is extracted from the cartridge mounting unit 110 in the upright state along the insertion and removal direction 50. This standing state corresponds to a mounting posture in which the ink cartridge 30B is mounted in the cartridge mounting portion 110. As shown in FIG. 6, the direction in which the ink cartridge 30 </ b> B is inserted into the cartridge mounting unit 110 is the insertion direction 56, and the direction in which the ink cartridge 30 </ b> B is extracted is the extraction direction 55. The insertion direction 56 and the extraction direction 55 are parallel to the insertion and extraction direction 50. In the present embodiment, the insertion direction 56 and the removal direction 55 are directions along the horizontal direction.

  As shown in FIGS. 2 and 3, the ink cartridge 30 </ b> B has a substantially rectangular parallelepiped housing 31, for example. The casing 31 is, for example, a flat shape that is short in the width direction 51 and has a height direction 52 and a front-rear direction 53 that are longer than the width direction 51. The width direction 51 and the front-rear direction 53 are along the horizontal direction when the ink cartridge 30B is in the mounting posture. The height direction 52 is along the vertical direction when the ink cartridge 30B is in the mounting posture. When the ink cartridge 30B is inserted into or removed from the cartridge mounting portion 110, the front-rear direction 53 is parallel to the insertion and removal direction 50, and the width direction 51 and the height direction 52 are orthogonal to the insertion and removal direction 50. .

  The housing 31 has a front wall 40 on the front side in the insertion direction 56 and a rear wall 42 on the rear side in the insertion direction 56. When the ink cartridge 30B is inserted into the cartridge mounting portion 110, the wall of the casing 31 that is the front side of the insertion direction 56 is the front wall 40, and the wall of the casing 31 that is the rear side is the rear wall 42. is there. The front wall 40 and the rear wall 42 are arranged at a predetermined distance in the front-rear direction 53 (insertion and extraction direction 50). The housing 31 further includes a pair of side walls 37 and 38 that connect the front wall 40 and the rear wall 42 and extend in the insertion and extraction direction 50. The side walls 37 and 38 may be located a predetermined distance apart in the width direction 51. The casing 31 further connects the side walls 37, 38 to the front wall 40 and the rear wall 42 and extends from the upper end of the front wall 40 toward the upper end of the rear wall 42, and the lower end of the front wall 40. May have a lower wall 41 extending toward the lower end of the rear wall 42. The upper wall 39 and the lower wall 41 may be located a predetermined distance apart in the height direction 52.

  As shown in FIG. 2, the ink supply unit 43 is provided below the height direction 52 of the front wall 40 of the housing 31, for example. Further, the center 57 of the ink supply unit 43 is arranged to be offset (biased), for example, to the right side (the front side in FIG. 2) with respect to the center 58 of the front wall 40 in the width direction 51. Such an offset in the arrangement of the ink supply unit 43 increases the ink capacity, so that the arrangement of the ink supply unit 43 will be described later even if the shape of the ink cartridge 30B is changed. 7). For example, the ink cartridge 30CL having the front wall 140 whose dimension in the width direction 51 is shorter than the front wall 40 of the ink cartridge 30B has a small ink capacity because the volume of the internal space of the housing 131 is also small. In such a small-capacity ink cartridge 30CL, it is preferable that the center of the ink supply unit 143 and the center of the front wall 140 in the width direction coincide with each other.

  The ink supply unit 43 has, for example, a cylindrical outer shape, and protrudes from the front wall 40 in the front-rear direction 53 (insertion and extraction direction 50) away from the ink chamber 36, that is, in the insertion direction 56. The ink supply port 71 is formed so as to open near the tip of the ink supply unit 43, for example. Although not shown in each figure, an ink flow path is formed inside the ink supply unit 43. The ink flow path extends from the ink supply port 71 in the front-rear direction 53 and communicates with the ink chamber 36.

  Although not shown in each figure, the ink supply port 71 is configured to be opened and closed by a valve, for example. The valve is provided to be movable along the front-rear direction 53 in the ink flow path of the ink supply unit 43. The valve is biased toward the ink supply port 71 by a coil spring. Therefore, in a state where no external force is applied to the valve, the valve is positioned at a closed position where the ink supply port 71 is closed liquid-tightly. Note that a portion surrounding the ink supply port 71 at the tip of the ink supply unit 43 is formed of an elastic member such as rubber, for example. When the biased valve contacts the elastic member, the elastic member is elastically deformed, and the ink supply port 71 is closed in a liquid-tight manner. In this state, a part of the valve is exposed from the ink supply port 71 to the outside of the ink supply unit 43, that is, to the outside of the ink cartridge 30B. A valve and a coil spring are not essential, and a film or a rubber plug may be provided instead of the valve.

  When the ink cartridge 30B is attached to the cartridge attachment portion 110, the ink supply pipe 122 (see FIG. 7) provided in the cartridge attachment portion 110 is inserted into the ink supply port 71, whereby the coil spring is elastically deformed. The valve moves to an open position away from the ink supply port 71 against the bias of the coil spring.

  An air introduction part 72 is provided on the upper side of the front wall 40 of the housing 31. The atmosphere introduction unit 72 is for introducing the atmosphere into the ink chamber 36 as the ink flows out from the ink chamber 36 into the ink supply pipe 122 provided in the cartridge mounting unit 110. Similarly to the ink supply unit 43 described above, the air introduction unit 72 may be opened and closed by a valve or the like, or is always opened to the outside of the housing 31 by a labyrinth structure or the like. Also good. Note that the air introduction unit 72 is not essential, and for example, the ink chamber 36 may be formed of a bag, and the pressure in the ink chamber 36 may be reduced as the ink decreases.

  A detection unit 73 for detecting the remaining amount of ink in the ink chamber 36 is provided at the center of the front wall 40 of the housing 31 in the height direction 52. The detection unit 73 is a convex portion that protrudes away from the ink chamber 36 from above the ink supply unit 43 of the front wall 40 of the ink cartridge 30B. The detection unit 73 has translucency. Therefore, the remaining amount of ink can be visually confirmed when the inside of the ink chamber 36 is viewed from the outside through the detection unit 73, or light is emitted from the light emitting element of the optical sensor toward the detection unit 73 and transmitted through the detection unit 73. Light is received by the light receiving element, and it is possible to determine the remaining amount of ink based on whether the amount of received light is equal to or greater than a threshold value. In the detection unit 73, a light-shielding plate that interlocks with a float that moves according to the liquid level of the ink chamber 36 may be provided. Further, instead of the light shielding plate, all or a part of the light emitted from the light emitting element is reflected, diffracted, or attenuated depending on whether or not the liquid level in the ink chamber 36 is in contact with the detection unit 73. In order to reduce the amount of light reaching the light receiving element, there may be provided.

  As shown in FIGS. 2 and 3, the lower end of the front wall 40 of the housing 31 is provided with a protrusion 32 that protrudes in the insertion direction 56, for example. The protrusion 32 protrudes to the front side from the protruding end of the ink supply unit 43 provided on the front wall 40.

  As shown in FIG. 2, for example, a guide portion 47 that protrudes upward is provided on the upper wall 39 of the housing 31. The guide portion 47 is, for example, a protrusion that is narrower than the dimension of the upper wall 39 in the width direction 51, extends along the front-rear direction 53 from the front wall 40 to the rear wall 42, and has a side surface and an upper wall of the protrusion. A recess is formed between the two. The center of the guide portion 47 in the width direction 51 is offset from the center of the upper wall 39 in the width direction 51, for example, to the right side (the front side in FIG. 2). The reason why the center in the width direction 51 of the guide portion 47 and the center in the width direction 51 of the upper wall 39 are not matched is the same as in the offset arrangement of the ink supply portion 43 described above, by changing the ink capacity of the ink cartridge 30B. This is also useful for making the arrangement of the guide portion 47 common to a guide rail 114 (see FIG. 7) described later.

  As shown in FIG. 2, a guide portion 48 that protrudes downward is provided on the lower wall 41 of the housing 31. The guide portion 48 is, for example, a convex strip that is thinner than the dimension in the width direction 51 of the lower wall 41, and extends along the front-rear direction 53 from the front wall 40 to the rear wall 42. A recess is formed between the wall. The center of the guide portion 48 in the width direction 51 is offset from the center of the lower wall 41 in the width direction 51, for example, to the right side (the front side in FIG. 2). The reason why the center of the width direction 51 of the guide part 48 and the center of the width direction 51 of the lower wall 41 are not matched is the same as the offset arrangement of the ink supply part 43 described above, by changing the ink capacity of the ink cartridge 30B. This is also useful for making the arrangement of the guide portion 48 common to a guide rail 115 (see FIG. 7) described later.

  In the present embodiment, the distance between the center in the width direction 51 of the guide portions 47 and 48 and the center in the width direction 51 of the upper wall 39 or the lower wall 41 is the width direction 51 of the center 57 of the ink supply portion 43 and the front wall 40. About the same distance as the center 58. That is, the ink supply unit 43 and the guide units 47 and 48 are disposed at the same position in the width direction 51, for example. When the ink cartridge 30 </ b> B is viewed from the front wall 40 side along the front-rear direction 53, the ink supply unit 43 and the guide units 47 and 48 are disposed so as to overlap in the width direction 51.

  As shown in FIGS. 2 and 3, a locking portion 45 is formed near the center of the guide portion 47 in the front-rear direction 53. The locking portion 45 is a recess having a locking surface 46 that extends in the width direction 51 and / or the height direction 52 of the ink cartridge 30B. In a state where the ink cartridge 30 </ b> B is mounted on the cartridge mounting portion 110, an engagement member 106 described later engages with the locking surface 46.

  As shown in FIGS. 2 and 3, the rotation member 80 is provided on the upper wall 39 side of the rear wall 42 side of the housing 31, for example. The rotating member 80 is an L-shaped flat plate, for example, and is arranged such that its longitudinal direction is along the front-rear direction 53. The rotating member 80 has a shaft 83 extending in the width direction 51 at a bent position between the front end portion 81 and the rear end portion 82. The rotating member 80 can rotate around the shaft 83.

  In the rotating member 80, the front end portion 81 on the front wall 40 side is disposed in the vicinity of the locking surface 46, for example. For example, the rear end portion 82 of the rotating member 80 slightly protrudes from the rear wall 42. In a state where no external force is applied to the distal end portion 81 of the rotating member 80, the rotating member 80 is biased by its own weight or a coil spring, and the distal end portion 81 is positioned on the uppermost side of the locking portion 45. At this time, the distal end portion 81 protrudes above the locking portion 45. In this state, the rear end portion 82 is closest to the upper wall 39 of the housing 31. When the distal end portion 81 of the rotating member 80 is pushed downward to the bottom side of the locking portion 45, the rotating member 80 rotates, for example, counterclockwise in FIG. 2 against its own weight. Further, when the rear end portion 82 of the rotating member 80 is pushed downward, the rotating member 80 rotates clockwise in FIG.

  As shown in FIG. 3, the rear wall 42 is offset in the width direction 51 by a first surface 61 disposed so as to face the ink supply portion 43 and the front-rear direction 53, and the ink supply portion 43 and the width direction 51. The second surface 62. The first surface 61 is a plane orthogonal to the front-rear direction 53 and may be wider than the dimension in the width direction 51 of the ink supply unit 43. The first surface 61 is a plane that is continuous with the upper wall 39 and the lower wall 41.

  The second surface 62 is, for example, a curved surface that is inclined from the first surface 61 toward the front wall 40 side in the front-rear direction 53 and is not orthogonal to the front-rear direction 53. The second surface 62 is continuous with the upper wall 39 and the lower wall 41 and is continuous with the first surface 61 and the side wall 37. The casing 31 has a shape in which corners along the height direction 52 of the rear wall 42 are chamfered by forming the second surface 62. The shape of the curved surface which is the second surface 62 is along the inner surface shape of the curved portion 14 of the lid 12 which will be described later.

[Ink cartridge 30CL]
Similar to the ink cartridge 30B, the ink cartridge 30CL has, for example, at least an ink chamber in which ink is stored. Ink of any one of cyan, magenta, and yellow is stored in a space formed inside the ink cartridge 30CL. Since the three ink cartridges CL have the same structure except that the color of the ink stored in the internal space is different, the detailed structure will be described below by taking one ink cartridge CL as an example.

  The ink cartridge 30CL is in the standing state shown in FIG. 4, that is, the front wall 140 with the lower surface in the drawing as the lower surface (lower wall 141) and the upper surface in the drawing as the upper surface (upper wall 139). An ink supply unit 143 is disposed below the cartridge mounting unit 110, and is inserted into or removed from the cartridge mounting unit 110 along a direction indicated by an arrow 50 (hereinafter referred to as "insertion and removal direction 50" (see FIG. 6)). . That is, the ink cartridge 30CL is inserted into the cartridge mounting unit 110 in the upright state along the insertion / removal direction 50, and is extracted from the cartridge mounting unit 110 along the insertion / removal direction 50 in the upright state. This standing state corresponds to a mounting posture in which the ink cartridge 30CL is mounted in the cartridge mounting portion 110. As shown in FIG. 6, the direction in which the ink cartridge 30CL is inserted into the cartridge mounting portion 110 is the insertion direction 56, and the direction in which the ink cartridge 30CL is extracted is the extraction direction 55.

  The ink cartridge 30CL includes, for example, a substantially cuboid housing 131. The casing 131 is, for example, a flat shape that is short in the width direction 51 and has a height direction 52 and a front-rear direction 53 that are longer than the width direction 51. The casing 131 of the ink cartridge 30CL is shorter in the width direction 51 than the casing 31 of the ink cartridge 30B, but the dimensions in the height direction 52 and the front-rear direction 53 are the same. That is, the casing 131 is narrower than the casing 31.

  The housing 131 has a front wall 140 on the front side in the insertion direction 56 and a rear wall 142 on the rear side in the insertion direction 56. When the ink cartridge 30CL is inserted into the cartridge mounting portion 110, the wall of the casing 31 that is the front side of the insertion direction 56 is the front wall 140, and the wall of the casing 131 that is the rear side is the rear wall 142. is there. The front wall 140 and the rear wall 142 are arranged at a predetermined distance in the front-rear direction 53 (insertion and extraction direction 50). The casing 131 further includes a pair of side walls 137 and 138 that connect the front wall 140 and the rear wall 142 and extend in the insertion and extraction direction 50. The side walls 137 and 138 may be located a predetermined distance apart in the width direction 51. The casing 131 further connects the side walls 137, 138 with the front wall 140 and the rear wall 142, and extends from the upper end of the front wall 140 toward the upper end of the rear wall 142, and the lower end of the front wall 140. May have a lower wall 141 extending toward the lower end of the rear wall 142. The upper wall 139 and the lower wall 141 may be located a predetermined distance apart in the height direction 52.

  As shown in FIG. 4, the ink supply unit 143 is provided on the lower side in the height direction 52 on the front wall 140 of the housing 131, for example. Further, the center 157 of the ink supply unit 143 is arranged to coincide with the center 158 of the front wall 140 in the width direction 151.

  The ink supply unit 143 has, for example, a cylindrical outer shape, and protrudes from the front wall 140 in the front-rear direction 153 (insertion and extraction direction 50) away from the ink chamber, that is, in the insertion direction 56. For example, the ink supply port 171 is formed so as to open near the tip of the ink supply unit 143. Although not shown in each drawing, an ink flow path is formed inside the ink supply unit 143. The ink flow path extends from the ink supply port 171 in the front-rear direction 53 and communicates with the ink chamber.

  Although not shown in each figure, the ink supply port 171 is configured to be openable and closable by, for example, a valve or the like, or to be able to open the ink flow path by a film or a rubber plug, as with the ink cartridge 30B. It is configured. When the ink cartridge 30CL is attached to the cartridge attachment portion 110, the ink supply pipe 122 (see FIG. 7) provided in the cartridge attachment portion 110 is inserted into the ink supply port 171 so that the valve is opened and the ink is supplied. The supply port 171 is opened.

  An air introduction part 172 is provided above the front wall 140 of the housing 131. The atmosphere introduction unit 172 is for introducing the atmosphere into the ink chamber as the ink flows out from the ink chamber into the ink supply pipe 122 provided in the cartridge mounting unit 110. Similarly to the ink supply unit 143 described above, the air introduction unit 172 may be opened and closed by a valve or the like, or is always opened to the outside of the housing 131 by a labyrinth structure or the like. Also good. Note that the air introduction unit 172 is not essential, and for example, the ink chamber may be formed of a bag, and the pressure in the ink chamber may be reduced as the ink decreases.

  A detection unit 173 for detecting the remaining amount of ink in the ink chamber is provided in the center of the front wall 140 of the housing 131 in the height direction 152. The detection part 173 is a convex part that protrudes away from the ink chamber from the upper side of the ink supply part 143 of the front wall 140 of the ink cartridge 30CL. The detection unit 173 has translucency. Therefore, it is possible to visually recognize the remaining amount of ink when the ink chamber is viewed from the outside via the detection unit 173, or to irradiate light from the light emitting element of the optical sensor toward the detection unit 173 and to transmit the light transmitted through the detection unit 173 It is possible to determine the remaining amount of ink based on whether light is received by the light receiving element and the amount of light received is equal to or greater than a threshold value. In the detection unit 173, a light shielding plate that interlocks with a float that moves according to the liquid level of the ink chamber may be provided. Further, instead of the light shielding plate, depending on whether the liquid level in the ink chamber is in contact with the detection unit 173, all or part of the light emitted from the light emitting element is reflected, diffracted, or attenuated, What reduces the light quantity which reaches a light receiving element may be provided.

  As shown in FIGS. 4 and 5, the lower end of the front wall 140 of the housing 131 is provided with a protrusion 132 that protrudes in the insertion direction 56, for example. The protrusion 132 protrudes to the front side from the protruding end of the ink supply unit 143 provided on the front wall 140.

  As illustrated in FIG. 4, for example, a guide portion 147 that protrudes upward is provided on the upper wall 139 of the housing 131. The guide portion 147 is, for example, a protrusion that is narrower than the dimension of the upper wall 139 in the width direction 51 and extends along the front-rear direction 53 from the front wall 140 to the rear wall 142. A recess is formed between the two. The center of the guide portion 147 in the width direction 51 is arranged to coincide with the center of the upper wall 139 in the width direction 51.

  As shown in FIG. 4, a guide portion 148 that protrudes downward is provided on the lower wall 141 of the housing 131. The guide portion 148 is, for example, a protrusion that is narrower than the dimension in the width direction 51 of the lower wall 141, and extends along the front-rear direction 53 across the space between the front wall 140 and the rear wall 142. A recess is formed between the wall. The center of the guide portion 148 in the width direction 51 is disposed so as to coincide with the center of the lower wall 141 in the width direction 51.

  As shown in FIGS. 4 and 5, a locking portion 145 is formed near the center of the guide portion 147 in the front-rear direction 53. The locking portion 145 is a recess having a locking surface 146 that extends in the width direction 51 and / or the height direction 52 of the ink cartridge 30CL. In a state where the ink cartridge 30CL is mounted on the cartridge mounting portion 110, an engagement member 106 described later engages with the locking surface 146.

  As shown in FIGS. 4 and 5, the rotating member 180 is provided on the upper wall 139 side of the rear wall 142 side of the housing 131, for example. The rotating member 180 is an L-shaped flat plate, for example, and is arranged such that its longitudinal direction is along the front-rear direction 53. The rotating member 180 has a shaft 183 extending in the width direction 51 at a bent position between the front end portion 181 and the rear end portion 182. The rotating member 180 can rotate around the shaft 183.

  In the rotating member 180, the front end portion 181 on the front wall 140 side is disposed in the vicinity of the locking surface 146, for example. For example, the rear end 182 of the rotating member 180 slightly protrudes from the rear wall 142. In a state where no external force is applied to the distal end portion 181 of the rotating member 180, the rotating member 180 is biased by its own weight or a coil spring, and the distal end portion 181 is positioned on the uppermost side of the locking portion 145. At this time, the tip 181 protrudes above the locking portion 145. In this state, the rear end 182 is closest to the upper wall 139 of the housing 131. When the distal end portion 181 of the rotating member 180 is pushed downward toward the bottom side of the locking portion 145, the rotating member 180 rotates counterclockwise in FIG. 4 against its own weight, for example. Further, when the rear end portion 182 of the rotating member 180 is pushed downward, the rotating member 180 rotates clockwise in FIG.

  As shown in FIG. 5, the rear wall 142 is a plane that faces the front wall 140 and is continuous with the side walls 37 and 38, the upper wall 39, and the lower wall 41. The corner portion 162 along the height direction 52 of the rear wall 142 has an angular shape without being chamfered. The shape of the corner 162 is smaller than R on the inner surface of the curved portion 14 of the lid 12 described later, and can contact the inner surface of the curved portion 14.

  In the present embodiment, the meaning that the corner portion along the height direction 52 of the rear wall 42 is chamfered, and the corner portion 162 along the height direction 52 of the rear wall 142 is not chamfered, It does not simply mean whether the corner is rounded or not, but is chamfered so as not to contact the inner surface of the curved portion 14 of the lid 12 in the closed position in relation to the inner shape of the curved portion 14 of the lid 12. It means whether or not. Therefore, if the inner surface shape of the curved portion 14 of the lid 12 is different, the inner surface of the curved portion 14 may or may not come into contact with the inner surface of the curved portion 14 of the lid 12. It is determined whether or not.

[Cartridge mounting part 110]
As shown in FIGS. 6 and 7, the cartridge mounting unit 110 is disposed at the right end of the front surface of the printer 10. A case 101 as a housing of the cartridge mounting unit 110 has a box shape having an opening 112 on the front side of the printer 10. The case 101 is disposed in the internal space of the casing 11 of the printer 10. The housing 11 is also opened on the opening 112 side of the case 101, and this opening can be opened and closed by the lid 12. The ink cartridges 30B and 30CL are inserted into or removed from the case 101 through the opening 112 when the lid 12 is in the open position (see FIG. 6). The case 101 can accommodate, for example, four ink cartridges 30B and 30CL corresponding to each color of cyan, magenta, yellow, and black.

  As shown in FIGS. 6 and 7, the lid 12 has a rotation shaft 13 near the bottom of the housing 11. The lid 12 is pivotally connected to the casing 11 by the pivot shaft 13 being rotatably supported by the casing 11. As shown in FIG. 6, the posture in which the lid 12 opens the opening of the housing 11 is referred to as an open posture. As shown in FIG. 8, the posture in which the lid 12 closes the opening of the housing 11 is referred to as a closed posture. The lid 12 is changed in posture between an open posture and a closed posture by being rotated around the rotation shaft 13.

  The lid 12 is an elongated thin plate, and has a curved portion 14 at one end in the direction in which the rotating shaft 13 extends, corresponding to the curved corners of the housing 11. The bending portion 14 forms a part of the curved surface of the corner portion of the housing 11 in a state where the lid 12 is in the closed posture (see FIG. 8). The bending portion 12 constitutes the front and side surfaces of the housing 11 in the closed posture, and the end surface 17 of the bending portion 14 faces the end surface 102 side of the case 101 (the back surface side of the housing 11).

  A locking claw 18 is provided on the end surface 17 of the lid 12 on the tip side opposite to the rotation shaft 13. The locking claw 18 extends from the end surface 17 to the inside of the lid 12 along the direction in which the rotation shaft 13 extends, and the tip side thereof is bent into a hook shape. The locking claw 18 enters and engages with the engaging portion 19 formed at the edge of the opening of the housing 11 from the outside of the bending portion 14. When the locking claw 18 is engaged with the engaging portion 19, the lid 12 is held in the closed posture.

  As shown in FIG. 7, the case 101 has an end surface 102 that faces the opening 112 in the insertion and removal direction 50 and faces the opening 112. The connection part 103 is provided in the lower part of the end surface 102 of the case 101, for example. The connection unit 103 is disposed on the end surface 102 at a position corresponding to the ink supply unit 43 of the ink cartridge 30 </ b> B attached to the case 101. In FIG. 7, the end surface 102 at the right end of the case 101 corresponding to the ink cartridge 30B appears, and the ink cartridge 30CL is mounted at other positions.

  The connection unit 103 includes an ink supply pipe 122 and a holding unit 121. Although not shown in the figure, the ink supply pipe 122 is connected to the ink tube 20 on the back side of the case 101. Each ink tube 20 connected to each ink supply pipe 122 is connected to the recording head 21 of the printer 10 so that ink can be distributed.

  The holding part 121 is formed on the end surface 102 of the case 101, for example, and a part of the end surface 102 is formed in a cylindrical shape. The ink supply pipe 122 is arranged at the center of the holding part 121 so as to protrude in the take-out direction 55. When the ink cartridge 30 </ b> B is mounted on the cartridge mounting unit 110, the cylindrical ink supply unit 43 is inserted into the cylindrical holding unit 121. At this time, the outer peripheral surface of the ink supply unit 43 is in contact with, for example, in close contact with the surface defining the holding unit 121. When the ink supply unit 43 is inserted into the holding unit 121, the ink supply tube 122 is inserted into the ink supply port 71 of the ink supply unit 43, and the ink supply tube 122 moves the valve. As a result, the valve in the closed position is moved to the open position against the bias of the coil spring, and the ink stored in the ink chamber 36 can flow out to the outside. The ink that has flowed out of the ink chamber 36 flows into the ink supply pipe 122 due to a water head difference or the like, and flows to the recording head 21 through the ink tube 20.

  The rod 104 is provided on the upper surface of the end surface 102 of the case 101, for example. The rod 104 is disposed on the end surface 102 at a position corresponding to the air introduction portion 72 of the ink cartridge 30 </ b> B attached to the case 101. When the ink cartridge 30B is mounted on the cartridge mounting portion 110, the rod 104 contacts the air introduction portion 72 and moves the valve. As a result, the valve in the closed position is moved to the open position against the bias of the coil spring, and the air layer in the ink chamber 36 is released to the atmosphere.

  The optical sensor 105 is provided, for example, at the center of the end surface 102 of the case 101. The optical sensor 105 is disposed on the end surface 102 at a position corresponding to the detection unit 73 of the ink cartridge 30 </ b> B attached to the case 101. When the ink cartridge 30B is mounted on the cartridge mounting unit 110, the detection unit 73 is positioned between the light emitting unit and the light receiving unit of the optical sensor 105. Infrared light emitted from the light emitting unit of the optical sensor 105 passes through the detection unit 73 and is received by the light receiving unit. Since the detection unit 73 blocks, attenuates, reflects, etc. the infrared light, the intensity of the light received by the light receiving unit is different. Therefore, the remaining amount of ink in the ink chamber 36 is determined based on the intensity.

  Guide rails 114 and 115 are respectively formed on the top and bottom surfaces that define the internal space of the case 101. The guide rails 114 and 115 are grooves that are recessed in the vertical direction from the top surface or the bottom surface. The width of this groove is slightly wider than the width of the guide portions 47 and 48 of the ink cartridge 30. Each of the guide rails 114 and 115 extends linearly from the opening 112 to the end surface 102. When the ink cartridge 30 is inserted into and removed from the internal space of the case 101, the guide portions 47 and 48 are inserted into the guide rails 114 and 115, and the ink cartridge 30 is linear between the opening 112 and the end surface 102 of the case 101. Be guided to.

  As shown in FIG. 1, an engagement member 106 is provided on the case 101. The engaging member 106 is for holding the ink cartridge 30 mounted on the cartridge mounting portion 110 in a mounted state. The engagement member 106 is provided on the top surface of the case 101 on the opening 112 side, for example.

  For example, the engaging member 106 is formed to be swingable about the support shaft 107. The support shaft 107 is provided, for example, at the top surface end portion of the engagement member 106 on the opening 112 side. The support shaft 107 is attached to the case 101, for example. Thereby, the engaging member 106 is supported on the top surface near the opening 112 of the case 101 so as to be rotatable about the support shaft 107. The engaging member 106 can be engaged with the locking portion 45 of the ink cartridge 30. When the engaging member 106 engages with the locking portion 45, the ink cartridge 30 is held at the mounting position against the case 101 against the urging force of the slide member 108. A rotation position where the engagement member 106 can be engaged with the locking portion 45 is referred to as a lock position, and a rotation position where the engagement member 106 does not engage with the locking portion 45 is referred to as an unlock position. The

  The engaging member 106 is rotated downward in the gravity direction about the support shaft 107 by, for example, its own weight or a coil spring. When the distal end portion 81 of the rotating member 80 moves upward, the engaging member 106 rotates upward about the support shaft 107 and moves from the locked position to the unlocked position. Moreover, although not shown in each figure, for example, the movable range of the engaging member 106 may be restricted so as not to move downward from the unlock position.

  As shown in FIG. 1, for example, a space enlarged in the insertion direction 56 is formed on the lower end side of the end surface 102 of the cartridge mounting portion 110. This expanded space is on the extension of the guide rail 115. In this enlarged space, a slide member 108 is provided so as to be slidable (horizontal movement) in the insertion and extraction direction 50. For example, the slide member 108 has a substantially rectangular parallelepiped outer shape, and is located on an extension line of the guide rail 115. The slide member 108 overlaps the entry path of the protrusion 32 of the ink cartridge 30 and can contact the protrusion 32 in the process of mounting the ink cartridge 30 to the cartridge mounting portion 110.

  A coil spring 109 is provided in a compressed state between the end surface of the space in which the slide member 108 is accommodated and the slide member 108. The slide member 108 is biased in the take-out direction 55 by the coil spring 109. Accordingly, the movement of the slide member 108 is restricted at a position where no external force is applied, for example, by contacting the front surface in the space. When the ink cartridge 30 is further inserted from the state in which the protrusion 32 of the ink cartridge 30 is in contact with the slide member 108, the coil spring 109 is contracted as the slide member 108 moves.

[Installation operation of ink cartridge 30]
Hereinafter, the operation of mounting the ink cartridges 30B and 30CL on the cartridge mounting unit 110 will be described.

  The ink cartridge 30B is wider than the ink cartridge 30CL, and is mounted on the right end side in the cartridge mounting portion 110. In mounting the ink cartridge 30B, the posture of the lid 12 of the casing 11 of the printer 10 is first changed from the closed posture to the open posture. As a result, the opening 112 of the case 101 of the cartridge mounting unit 110 is exposed on the front side of the printer 10.

  The ink cartridge 30B is inserted from the front wall 40 side of the ink cartridge 30B through the opening 112. When the ink cartridge 30B is inserted into the opening 112, the guide portions 47 and 48 of the ink cartridge 30B enter the guide rails 114 and 115 of the case 101, respectively. The guide portions 47 and 48 are inserted into the guide rails 114 and 115, and the ink cartridge 30 </ b> B is guided straight from the opening 112 to the end surface 102.

  When the front wall 40 of the ink cartridge 30 </ b> B is inserted into the case 101 to the vicinity of the engaging member 106, the housing 31 comes into contact with the engaging member 106. When the ink cartridge 30 is further inserted into the cartridge mounting portion 110, the engaging member 106 rides on the upper surface of the guide portion 47, and the engaging member 106 rotates counterclockwise in FIG. Move to the locked position.

  In the middle of mounting the ink cartridge 30 </ b> B on the cartridge mounting unit 110, the ink supply unit 43 contacts the holding unit 121, and the ink supply pipe 122 is inserted into the ink supply port 71 of the ink supply unit 43. Further, the air introduction part 72 is brought into contact with the rod 104 and released. The detection unit 73 reaches the detection position of the optical sensor 105.

  In the middle of mounting the ink cartridge 30B to the cartridge mounting portion 110, when the protrusion 32 comes into contact with the slide member 108 and the ink cartridge 30B is moved to the insertion direction 56, the slide member 108 is attached to the coil spring 109. Moved to the final side against the force.

  As shown in FIG. 1, when the ink cartridge 30 </ b> B reaches the mounting position, the locking surface 46 in the locking portion 45 of the housing 31 passes the engaging member 106 of the engaging member 106 in the insertion direction 56. As a result, the engaging member 106 of the engaging member 106 is not supported on the upper surface of the guide portion 47, so that the engaging member 106 rotates in the clockwise direction in FIG. 1 and is positioned at the engaging portion 145. 106 contacts the locking surface 46. When the engaging member 106 engages with the locking portion 45, the ink cartridge 30 </ b> B is held at the mounting position against the bias of the coil spring 109. In this way, the mounting of the ink cartridge 30B to the cartridge mounting unit 110 is completed.

  When the mounting of the ink cartridge 30B is completed, the posture of the lid 12 of the casing 11 of the printer 10 is changed from the open posture to the closed posture. As described above, the second surface 62 of the rear wall 42 of the ink cartridge 30 </ b> B is a curved surface that is curved along the inner surface shape of the curved portion 14 of the lid 12. Therefore, as shown in FIG. 8, the rear wall 42 does not contact the inner surface of the lid 12 even when the lid 12 is in the closed posture. The lid 12 is brought into a closed posture, and the locking claw 18 of the lid 12 is engaged with the engaging portion 19 of the housing 11, whereby the lid 12 is held in the closed posture.

  When ink in the ink chamber 36 of the ink cartridge 30 is consumed, the used ink cartridge 30 is removed from the cartridge mounting portion 110 and a new ink cartridge 30 is mounted.

  When the ink cartridge 30 is removed from the cartridge mounting portion 110, the lid 12 of the housing 11 is changed in posture from the closed posture to the open posture as described above. Then, the rear end portion 82 of the rotating member 80 is pushed downward by the user. Since the rear end portion 82 of the rotating member 80 is located on the front side of the rear wall 42, the user can operate the rotating member 80 from the rear wall 42 side of the ink cartridge 30. As a result, the distal end portion 81 of the rotating member 80 moves upward and is separated from the bottom surface of the locking portion 45. As the distal end portion 81 moves, the engaging member 106 is pushed upward by the distal end portion 81 of the rotating member 80. Accordingly, the engagement member 106 is rotated until the engagement member 106 of the engagement member 106 is above the engagement surface 46, that is, until the engagement member 106 is separated from the engagement surface 46. That is, the engaging member 106 is rotated from the locked position to the unlocked position, and the holding of the ink cartridge 30 by the engaging member 106 is released.

  When the engaging member 106 of the engaging member 106 is separated from the locking surface 46, the external force applied to the housing 31, that is, the force that moves the housing 31 in the take-out direction 55 by the biasing force by the coil spring 109. Works. On the other hand, since the user pushes the rotating member 80 downward, the urging force by the coil spring 109 is received by the user's hand through the rotating member 80. Then, when the user pulls out the hand in the removal direction 55, the ink cartridge 30 moves toward the opening 112 of the cartridge mounting portion 110 by the biasing force of the coil springs 73 and 126.

  Next, an operation when the ink cartridge 30CL is erroneously attached to the position where the ink cartridge 30B should be attached, that is, the right end of the case 101 of the cartridge attachment portion 110 will be described.

  Since the ink cartridge 30CL is narrower than the ink cartridge 30B, the ink cartridge 30CL can be inserted into the right end side of the cartridge mounting portion 110 to which the wide ink cartridge 30B can be mounted. Therefore, the user may erroneously insert the ink cartridge 30CL into the right end of the cartridge mounting unit 110.

  In the same manner as described above, after the lid 12 of the casing 11 of the printer 10 is changed from the closed position to the open position, the ink cartridge 30CL is inserted into the case 101 from the front wall 140 side through the opening 112. In the same manner as described above, the ink cartridge 30CL is inserted into the case 101, the ink supply unit 143 is in contact with the holding unit 121, the ink supply pipe 122 is inserted into the ink supply port 171 of the ink supply unit 143, and the air introduction unit 172 contacts the rod 104 and is released. Further, the detection unit 173 reaches the detection position of the optical sensor 105.

  In the middle of mounting the ink cartridge 30CL to the cartridge mounting portion 110, when the protrusion 132 contacts the slide member 108 and the ink cartridge 30CL is further moved to the insertion direction 56, the slide member 108 is attached to the coil spring 109. Moved to the final side against the force. Then, when the engaging member 106 is engaged with the locking portion 145, the ink cartridge 30CL is held at the mounting position against the urging of the coil spring 109.

  Subsequently, in the process of changing the position of the lid 12 of the casing 11 of the printer 10 from the open position to the closed position, as shown in FIG. 9, the corner portion 162 of the rear wall 142 is the inner surface of the curved portion 14 of the cover 12. Abut. In the drawing, the lid 12 and the corner portion 162 are viewed from above, and the inner surface of the curved portion 14 of the lid 12 is in contact with the lower side of the corner portion 162. This abutting position is indicated by an arrow denoted by reference numeral 59 in FIG. Due to this contact, the locking claw 18 (see FIG. 6) on the upper side of the lid 12 cannot reach the engaging portion 19 (see FIG. 6), and the posture of the lid 12 changes from the open posture to the closed posture. To be stopped. That is, since the lid 12 cannot be in the closed posture, the user recognizes that the ink cartridge 30CL has been installed at an incorrect position. Further, as described above, if the user forcibly pushes the rotating tip side of the lid 12 into the closed position in a state where the inner surface of the curved portion 14 of the lid 12 is in contact with the corner portion 162, the curved portion Due to the contact between the portion 14 and the corner portion 162, the bending portion 14 of the lid 12 is deformed in the direction indicated by the arrow 54. Since the locking part 18 is engaged with the engaging part 19 from the outside, the deformation of the curved part 14 does not keep the locking part 18 engaged with the engaging part 19. Therefore, when the user stops pushing the lid 12, the deformation of the bending portion 14 is elastically restored and the lid 12 does not take a closed posture.

[Operational effects of this embodiment]
According to this embodiment, since the corner portion of the rear wall 42 is chamfered, the type of the ink cartridge 30B can be easily determined from the outer shape. Further, since the ink cartridge 30CL is in contact with the curved portion 14 of the lid 12 in which the corner portion 162 of the rear wall 142 changes to the closed posture, the ink cartridge 30CL is mounted on the right end side where the ink cartridge 30B is to be mounted. Then, the lid 12 cannot be in the closed posture. Since the lid 12 is not closed, the user recognizes the erroneous mounting of the ink cartridge 30CL.

  Further, the lid 12 is held in a closed posture by engaging a locking claw 18 provided at an end of the bending portion 14 with an engaging portion 19 of the housing 11 from the outside of the bending. As described above, from the state where the lid 12 is in contact with the corner portion 162 of the ink cartridge 30CL, even if the user forcibly pushes the lid 12, the bending radius of the bending portion 14 increases (arrow 54). The lid 12 is deformed. Thereby, the locking claw 18 cannot engage with the engaging portion 19. Therefore, when the user stops pushing the lid 12 forcibly, the lid 12 is elastically restored from the deformed state without being held in the closed posture. Since the lid 12 cannot be maintained in the closed posture, the user can recognize that the ink cartridge 30CL is erroneously mounted.

  The ink cartridge 30B stores pigment-based ink, and the ink cartridge 30CL stores dye-based ink. Therefore, the ink cartridge 30CL is mounted at a position where the ink cartridge 30B is to be mounted. In the ink tube 20 or the like, different types of ink are prevented from being mixed and solidified.

  Further, since the ink cartridge 30B stores black ink, and the ink cartridge 30CL stores ink of any one color of cyan, magenta, and yellow, the ink cartridge 30CL is mounted with the ink cartridge 30B. The ink is prevented from being mixed in the ink tube 20 or the like by being mounted at a position to be mounted.

[Modification]
As shown in FIG. 10, the lower portion of the rear wall 142 of the ink cartridge 30CL is shaped to be recessed toward the front wall 140, whereby the contact position 117 where the corner portion 162 of the ink cartridge 30CL contacts with the lid 12. The first distance D1 from the rotation shaft 13 to the rotation shaft 13 is longer than the second distance D2 from the contact position 117 to the rotation tip 118 (first distance D1> second distance D2). As a result, when the user forcibly pushes the rotation tip 118 side of the lid 12 into the closed position, the force applied to the rotation shaft 13 can be reduced, and the rotation shaft 13 is removed from the housing 11. It can be prevented from coming off.

  In the above-described embodiment, the second surface 62 of the casing 31 of the ink cartridge 30B is a curved surface. However, the second surface 62 is recessed to the flat surface or the front wall 40 side with the first surface 61. You may comprise as a surface which forms a level | step difference in the front-back direction 53. FIG.

  In the above-described embodiment, the ink supply unit 43 is arranged on the front wall 40 of the casing 31 so as to be offset from the center in the width direction 51. However, such an offset is made in the ink cartridge 30B. Instead, the ink supply unit 42 may be disposed in the center of the front wall 40 in the width direction 51.

  Further, in the above-described embodiment, a mode in which ink is stored in the ink cartridge 30 as a printing fluid corresponding to the ink jet printer 10 is shown, but the printing fluid is not limited to ink, for example, The present invention can also be applied to a cartridge storing toner as a printing fluid corresponding to an electrophotographic image forming apparatus.

10: Printer (recording device)
DESCRIPTION OF SYMBOLS 11 ... Housing 12 ... Lid 13 ... Rotating shaft 14 ... Bending part 18 ... Locking claw 19 ... Engaging part 30B ... Ink cartridge (first printing fluid cartridge )
30CL ... ink cartridge (second printing fluid cartridge)
42, 142 ... rear wall 101 ... case 110 ... cartridge mounting portion 112 ... opening 162 ... corner

Claims (7)

A recording apparatus provided with a cartridge mounting portion in which a plurality of printing fluid cartridges can be mounted through openings,
The cartridge mounting portion changes its posture between a case in which the printing fluid cartridge is inserted through the opening and a rotation posture around the rotation shaft to close the opening and open the opening. A plate-shaped lid,
The lid has a curved portion that is curved so that one end side in the width direction along the rotation axis faces the end surface side of the case in the closed posture.
The first printing fluid cartridge to be inserted into one end of the lid of the case has a corner along the height direction of the rear wall in the direction of insertion into the case, and the curved portion of the lid in the closed posture. It is chamfered so that it does not touch,
The second printing fluid cartridge to be inserted into the case other than the one end side of the lid is the height of the rear wall in the insertion direction into the case in a state where the second printing fluid cartridge is inserted into one end side of the lid in the case. A recording apparatus in which a corner portion along a direction is in contact with a curved portion of the lid that changes its posture from an open posture to a closed posture, thereby preventing the posture change from the closed posture.   2. The recording apparatus according to claim 1, wherein in the lid, a first distance from a position in contact with a corner of the second printing fluid cartridge to the rotation shaft is longer than a second distance from the position to the rotation tip. .   The lid is held in a closed position by engaging a latching claw provided at an end of the curved portion with an engaging portion of a casing of the recording apparatus from the outside of the curved portion. The recording apparatus according to 1 or 2.   The recording apparatus according to claim 1, wherein the corner portion of the first printing fluid cartridge is a curved surface along a curved portion of the lid. The first printing fluid cartridge stores pigment-based ink,
The recording apparatus according to claim 1, wherein the second printing fluid cartridge stores dye-based ink. The first printing fluid cartridge stores black printing fluid,
The recording apparatus according to claim 1, wherein the second printing fluid cartridge stores printing fluid other than black.   The recording apparatus according to claim 1, wherein the first printing fluid cartridge has a larger volume of printing fluid that can be stored than the second printing fluid cartridge.

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