Media transport device, recording device

Abstract

To facilitate disposal of paper dust accumulated in a paper dust receiving recess in a configuration in which a paper dust receiving recess is provided below a scraping member that scrapes off paper dust. [Solution] The media conveying device comprises a conveying section that conveys the media, a cleaning section that cleans the conveying section, a scraping section that comes into contact with the cleaning section and scrapes paper dust from the cleaning section, and a receiving section that is provided below the scraping section and receives the paper dust, wherein the receiving section is pulled out from the device main body by being displaced in a first direction and is attached to the device main body by being displaced in a second direction opposite to the first direction, and the scraping section is provided on the receiving section and comes into contact with the cleaning section and scrapes paper dust from the cleaning section when the receiving section is displaced in at least one of the first direction and the second direction.

Description

[Technical Field]

[0001] The present invention relates to a medium transport device that transports a medium, and a recording device that includes the same. [Background technology]

[0002] The image forming apparatus described in Patent Document 1 is provided with a paper dust collection member located near the pair of registration rollers, which contacts the circumferential surface of one of the pair of registration rollers to collect paper dust. The paper dust collection member extends along the axial direction of the pair of registration rollers and is configured to be able to be pulled out along the axial direction. A scraping member is provided in the direction of pulling out the paper dust collecting member. When the paper dust collecting member is pulled out in the axial direction, the scraping member scrapes off paper dust adhering to the paper dust collecting member. A paper dust receiving recess is provided below the scraping member as a separate body from the paper dust collecting member, and the scraped-off paper dust is received in the paper dust receiving recess. The paper dust accumulated in the paper dust receiving recess is discarded by an operator during regular inspection of the image forming apparatus. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-227290 Summary of the Invention [Problem to be solved by the invention]

[0004] The image forming apparatus described in Patent Document 1 has a problem in that it is difficult to dispose of the paper dust that has accumulated in the paper dust receiving recess. [Means for solving the problem]

[0005] In order to solve the above problem, the media conveying device of the present invention comprises a conveying section that conveys a medium, a cleaning section that cleans the conveying section, a scraping section that comes into contact with the cleaning section and scrapes paper dust from the cleaning section, and a receiving section that is provided below the scraping section and receives the paper dust, wherein the receiving section is pulled out from the device main body by being displaced in a first direction and is attached to the device main body by being displaced in a second direction opposite to the first direction, and the scraping section is provided on the receiving section and comes into contact with the cleaning section and scrapes paper dust from the cleaning section when the receiving section is displaced in at least one of the first direction and the second direction. A recording apparatus according to the present invention includes the medium transport device and a recording section for recording on the medium. [Brief explanation of the drawings]

[0006] [Figure 1] FIG. 2 is a diagram showing a media transport path of the printer. [Figure 2] FIG. 2 is a block diagram showing the control system of the printer. [Figure 3] FIG. 4 is a diagram showing the belt unit, blade, scraping unit, and receiving unit as viewed from the medium width direction. [Figure 4] 10A and 10B are diagrams showing the belt unit, the blade, the scraping unit, and the receiving unit as viewed from the medium transport direction, and illustrating the movement of the scraping unit as the receiving unit is pulled out. [Figure 5] 10A and 10B are diagrams illustrating the belt unit, the blade, the scraping unit, and the receiving unit as viewed from the medium width direction, showing how the blade is displaced from the contact position to the separated position. [Figure 6] 10A and 10B are diagrams showing the belt unit, blade, scraping unit, and receiving unit as viewed from the medium transport direction, illustrating movement of the scraping unit and displacement of the blade as the receiving unit is pulled out. [Figure 7] FIG. 2 is a diagram showing the belt unit, blade, scraping unit, and receiving unit as viewed from the medium transport direction. [Figure 8] FIG. 2 is a diagram showing the belt unit, blade, scraping unit, and receiving unit as viewed from the medium transport direction. DETAILED DESCRIPTION OF THE INVENTION

[0007] The present invention will be briefly described below. A media conveying device according to a first aspect comprises a conveying section for conveying a medium, a cleaning section for cleaning the conveying section, a scraping section for contacting the cleaning section to scrape paper dust from the cleaning section, and a receiving section provided below the scraping section to receive the paper dust, wherein the receiving section is pulled out from the device main body by being displaced in a first direction, and is attached to the device main body by being displaced in a second direction opposite to the first direction, and the scraping section is provided on the receiving section, and when the receiving section is displaced in at least one of the first direction and the second direction, it comes into contact with the cleaning section to scrape paper dust from the cleaning section.

[0008] According to this aspect, the receiving portion is pulled out from the device main body by being displaced in the first direction, and is attached to the device main body by being displaced in the second direction, making it easy to dispose of the paper dust received by the receiving portion. The scraping unit is provided on the receiving unit and contacts the cleaning unit to scrape paper dust from the cleaning unit when the receiving unit is displaced in at least one of the first direction and the second direction. This eliminates the need to provide a separate mechanism for pulling out and attaching the receiving unit from the device body and a separate mechanism for moving the scraping unit relative to the cleaning unit, thereby preventing an increase in cost and size of the device.

[0009] The second aspect is a dependent aspect of the first aspect, characterized in that the scraping portion scrapes paper dust from the cleaning portion when the receiving portion is displaced in the first direction, and at least a portion of the scraping portion is positioned in the second direction relative to the cleaning portion when the receiving portion is attached to the device main body.

[0010] According to this aspect, when the receiving portion is pulled out from the attached state, the entire cleaning portion in the displacement direction of the receiving portion can be cleaned. The scraping portion scrapes paper dust from the cleaning portion when the receiving portion is displaced in the first direction, and may also scrape paper dust from the cleaning portion when the receiving portion is displaced in the second direction.

[0011] A third aspect is a dependent aspect of the first aspect, characterized in that the cleaning unit is displaceable between a contact position in contact with the conveying unit and a separated position separated from the conveying unit, and when the scraping unit scrapes paper dust from the cleaning unit, the cleaning unit is located at the separated position.

[0012] According to this aspect, when the scraping unit scrapes paper dust from the cleaning unit, the cleaning unit is positioned at the separated position, making it easier for the scraping unit to scrape the entire cleaning unit, specifically the entire cleaning unit including the part that comes into contact with the conveying unit, and allowing the paper dust to be scraped off efficiently. It should be noted that this aspect is not limited to the first aspect, but may be subordinate to the second aspect.

[0013] A fourth aspect is a dependent aspect of the third aspect, characterized in that when the scraping unit scrapes off paper dust from the cleaning unit, the scraping unit scrapes off the dust including the part of the cleaning unit that comes into contact with the conveying unit.

[0014] According to this aspect, when the scraping unit scrapes off paper dust from the cleaning unit, the scraping unit scrapes off the dust including the area where the cleaning unit comes into contact with the conveying unit, thereby enabling the paper dust to be scraped off efficiently.

[0015] A fifth aspect is an aspect dependent on the third aspect, characterized in that the scraping portion scrapes paper dust from the cleaning portion when the receiving portion is displaced in the first direction, at least a portion of the scraping portion is positioned in the second direction relative to the cleaning portion when the receiving portion is attached to the device main body, and the cleaning portion displaces from the contact position to the separated position in conjunction with the displacement of the receiving portion in the first direction from the state when it is attached to the device main body, before the scraping portion comes into contact with the cleaning portion.

[0016] According to this aspect, the scraping portion scrapes paper dust from the cleaning portion when the receiving portion is displaced in the first direction, and at least a portion of the scraping portion is positioned in the second direction relative to the cleaning portion when the receiving portion is attached to the device main body.Therefore, when the receiving portion is pulled out from its attached state, the entire cleaning portion in the displacement direction of the receiving portion can be cleaned. Furthermore, since the cleaning unit is displaced from the contact position to the separated position in conjunction with the displacement of the receiving unit, the operator does not need to operate the receiving unit and the cleaning unit separately, improving the ease of use of the device.

[0017] Furthermore, when the scraping unit starts scraping paper dust from the cleaning unit, the cleaning unit has already been displaced to the separated position, so the entire cleaning unit can be scraped throughout the entire scraping process. In addition, the cleaning unit does not displace while the scraping unit is scraping paper dust, which prevents damage such as deformation of the cleaning unit. The scraping portion scrapes paper dust from the cleaning portion when the receiving portion is displaced in the first direction, and may further scrape paper dust from the cleaning portion when the receiving portion is displaced in the first direction. It should be noted that this aspect is not limited to the third aspect, but may be subordinate to the fourth aspect.

[0018] The sixth aspect is a dependent aspect of the third aspect, characterized in that the receiving portion is capable of engaging and disengaging with a support member that supports the cleaning portion, and when the receiving portion engages with the support member, the cleaning portion is displaced from the separated position to the contact position, and when the receiving portion disengages from the support member, the cleaning portion is displaced from the contact position to the separated position.

[0019] According to this aspect, the receiving portion is displaced by engaging and disengaging with the cleaning portion, so no power source is required to displace the cleaning portion, and an increase in the cost of the device can be suppressed. It should be noted that this aspect is not limited to the third aspect, but may be subordinate to the fourth or fifth aspect.

[0020] The seventh aspect is a dependent aspect of the fourth aspect, characterized in that the cleaning part is composed of a plate-shaped member, and the scraping part is an elastic member having a receiving part for receiving the plate-shaped member.

[0021] According to this aspect, the scraping portion is an elastic member having a receiving portion that receives the plate-shaped member, which makes it easier to scrape paper dust from the plate-shaped member, particularly from the entire plate-shaped member including the tip end of the plate-shaped member. It should be noted that this aspect is not limited to the fourth aspect, but may be subordinate to the fifth or sixth aspect.

[0022] An eighth aspect is an aspect dependent on the first aspect, characterized in that the scraping portion is configured by a brush. According to this aspect, the scraping portion is configured with a brush, which makes it easier to scrape paper dust off the cleaning portion. It should be noted that this aspect is not limited to the first aspect, but may be subordinate to any of the second to sixth aspects.

[0023] A ninth aspect is characterized in that the scraping portion scrapes off paper dust from the cleaning portion when the receiving portion displaces in the first direction and the second direction, and the receiving portion has a portion that receives paper dust in the first direction relative to the scraping portion and a portion that receives paper dust in the second direction.

[0024] According to this aspect, the receiving portion has a portion that receives paper dust in the first direction relative to the scraping portion and a portion that receives paper dust in the second direction. Therefore, in a configuration in which the scraping portion scrapes off paper dust when the receiving portion is displaced in the first direction and the second direction, it is possible to prevent the paper dust from scattering to a position away from the receiving portion. It should be noted that this aspect is not limited to the first aspect, but may be subordinate to any of the second to eighth aspects.

[0025] The tenth aspect is an aspect dependent on the first aspect, and is characterized in that the device is provided with an opening / closing part that can be opened and closed relative to the device main body, and the receiving part is linked to the opening and closing of the opening / closing part, moving in the first direction when the opening / closing part is opened, and moving in the second direction when the opening / closing part is closed.

[0026] According to this aspect, the receiving section moves in the first direction when the opening / closing section is opened and moves in the second direction when the opening / closing section is closed in conjunction with the opening / closing of the opening / closing section, so that the scraping section can scrape off paper dust from the cleaning section in conjunction with the opening / closing of the opening / closing section, eliminating the need to operate the receiving section independently and improving the ease of use of the device. It should be noted that this aspect is not limited to the first aspect, but may be subordinate to any of the second to ninth aspects.

[0027] An eleventh aspect is a mode dependent on the tenth aspect, characterized in that the receiving portion is located in a position that is exposed when the opening and closing portion is opened. According to this aspect, the receiving portion is located in a position that is exposed when the opening / closing portion is opened, and therefore paper dust that has accumulated in the receiving portion can be easily removed by opening the opening / closing portion.

[0028] The twelfth aspect is a dependent aspect of the first aspect, and comprises a control unit that controls the device, and an alarm unit that issues an alarm under the control of the control unit, and is characterized in that when the number of media transported by the transport unit exceeds a threshold value, the control unit notifies the alarm unit to pull out the receiving unit from the device main body.

[0029] According to this aspect, when the number of sheets of media transported by the transport unit exceeds a threshold value, the control unit notifies the notification unit to pull the receiving unit out of the device main body, thereby preventing the receiving unit from exceeding its capacity to accommodate paper dust. It should be noted that this aspect is not limited to the first aspect, but may be subordinate to any of the second to eleventh aspects.

[0030] A thirteenth aspect is an aspect dependent on the first aspect, characterized in that the transport unit transports the medium by a transport belt. According to this aspect, in a configuration in which the transport unit transports the medium by a transport belt, the effects of the first aspect described above can be obtained. It should be noted that this aspect is not limited to the first aspect, but may be subordinate to any of the second to twelfth aspects.

[0031] A recording device according to a fourteenth aspect is characterized by including the medium transport device according to any one of the first to thirteenth aspects and a recording section that records on the medium. According to this aspect, the recording device can achieve the effects of any one of the first to thirteenth aspects described above.

[0032] The present invention will be specifically described below. In the following, an inkjet printer 1 that performs recording by ejecting ink, which is an example of a liquid, onto a medium such as recording paper will be described as an example of a recording device. In the following, the inkjet printer 1 will be abbreviated as printer 1.

[0033] The XYZ coordinate system shown in each figure is a Cartesian coordinate system, with the Y axis direction being the medium width direction that intersects with the medium transport direction and the device depth direction. In this embodiment, of the side surfaces that make up the periphery of the device main body 2, the side surface in the +Y direction is the back surface, and the side surface in the -Y direction is the front surface. The X axis direction is the width direction of the device, with the +X direction being the left side and the -X direction being the right side as seen by the operator of the printer 1. The -X direction is also the direction in which media is fed out from each media cassette, which will be described later. The Z-axis direction is the vertical direction, that is, the height direction of the device, with the +Z direction being the upward direction and the -Z direction being the downward direction. In the following, the direction in which the medium is transported may be referred to as "downstream," and the opposite direction may be referred to as "upstream." In Figure 1, the medium transport path is indicated by a dashed line. In the printer 1, the medium is transported through the medium transport path indicated by the dashed line. From the perspective of transporting the medium, the printer 1 can also be called a medium transport device 5. In this case, the printer 1 is an example of a recording device that includes the medium transport device 5 and a line head 12, which will be described later.

[0034] The printer 1 has an operation panel 90 on top of the device main body 2, which is equipped with a line head 12 (described later). The operation panel 90 is configured with a touch panel that accepts various setting operations and displays various information. The operation panel 90 functions as a notification unit that issues various notifications under the control of a control unit 80 (described later) (see FIG. 2).

[0035] A medium cassette 3 is provided at the bottom of the device main body 2. Reference symbol P indicates the medium stored in the medium cassette 3. A pick roller 21 is provided for the medium cassette 3 to feed the stored medium in the -X direction. A feed roller pair 25 is also provided for the medium cassette 3 to feed the medium fed by the pick roller 21 further downstream. Note that a plurality of medium cassettes (not shown) are further provided below the medium cassette 3. A pick roller (not shown) and a feed roller pair (not shown) are also provided for each of the plurality of medium cassettes (not shown). Unless otherwise specified, the term "roller pair" hereinafter refers to a pair of rollers consisting of a drive roller driven by a power source such as a motor, and a driven roller that rotates in contact with the drive roller.

[0036] Symbol T1 indicates the transport path of the medium that is sent out from the medium cassette 3 and reaches the transport roller pair 34. The medium sent out from the medium cassette 3 receives a transport force from the transport roller pairs 29 and 33 and is sent to the transport roller pair 34. The medium receiving the feeding force from the transport roller pair 34 is sent to a recording position between the line head 12, which is an example of a recording unit, and the transport belt 53, that is, facing the line head 12.

[0037] The line head 12 performs recording by ejecting ink, an example of a liquid, onto a medium from nozzles 13 provided on a nozzle surface 12a. In this embodiment, the ink is ejected from the nozzles 13 in the -Z direction. The line head 12 is an ink ejection head in which multiple nozzles 13 that eject ink are arranged to cover the entire area in the width direction of the medium, and is configured as an ink ejection head that can record across the entire width of the medium without moving in the width direction of the medium. However, the ink ejection head is not limited to this, and may be a type that is mounted on a carriage and ejects ink while moving in the width direction of the medium. Furthermore, the recording method is not limited to the inkjet method, but may be a dot impact method, a laser method, or an LED method of electrophotography.

[0038] The line head 12 according to this embodiment ejects ink of a plurality of colors, for example. Specifically, in this embodiment, the plurality of nozzles 13 are configured with a plurality of nozzles 13 that eject yellow ink, a plurality of nozzles 13 that eject magenta ink, a plurality of nozzles 13 that eject cyan ink, and a plurality of nozzles 13 that eject black ink.

[0039] Next, the conveyor belt 53 is an endless belt that is wound around a first roller 54 that is a drive roller and a second roller 55 that is a driven roller, and is rotated by driving the first roller 54 by a belt rotation motor 89 (see FIG. 3). The medium is conveyed to a position facing the line head 12 while being attracted to the belt surface of the conveyor belt 53. The medium can be attracted to the conveyor belt 53 by an electrostatic attraction method. However, the medium can also be attracted to the conveyor belt 53 by an air suction method. The conveyor belt 53 constitutes a conveyor unit that conveys the medium.

[0040] The first roller 54, the second roller 55, and the conveyor belt 53 constitute the belt unit 52. The first roller 54 receives power from a belt rotation motor 89 (see FIG. 2) and rotates, and the rotation of the first roller 54 rotates the conveyor belt 53, thereby conveying the medium.

[0041] Reference numeral 56 denotes a blade serving as a cleaning unit that comes into contact with the conveyor belt 53 to remove paper dust adhering to the conveyor belt 53. The blade 56 is, for example, a plate-like member having a predetermined thickness, and is an elastic member that can be elastically deformed, specifically formed from a PET sheet, and can be elastically deformed while in contact with the conveyor belt 53. However, the blade 56 is not limited to this, and may be formed from urethane, rubber, or the like. In this embodiment, the blade 56 is provided in an inclined position so that the tip thereof opposes the movement of the conveyor belt 53 . It should be noted that foreign matter such as dust, ink, and the like, in addition to paper powder, may adhere to the conveyor belt 53, and the blade 56 scrapes off such foreign matter and drops it below the conveyor belt 53. In this specification, paper powder is treated as a typical example of foreign matter. A receiving portion 60 (see FIG. 3), which will be described later, is provided below the blade 56, but is not shown in FIG.

[0042] The medium on whose first side has been recorded by the line head 12 is sent by the transport roller pair 35 located downstream of the transport belt 53 toward either the transport roller pair 36 or the transport roller pair 40. A path switching flap (not shown) is provided downstream of the transport roller pair 35, and the medium receiving the feeding force from the transport roller pair 35 is sent by this path switching flap to either the transport roller pair 36 or the transport roller pair 40.

[0043] When recording is not performed on both the first side and the opposite second side of the medium, i.e., when double-sided recording is not performed, the medium is sent from transport roller pair 35 to transport roller pair 36, and is discharged through discharge path T4 to discharge tray 8. Discharge path T4 is provided with transport roller pair 38 and transport roller pair 39.

[0044] When recording is to be performed on both the first side and the opposite second side of the medium, i.e., when double-sided recording is to be performed, the medium is sent from transport roller pair 35 towards transport roller pair 40 and enters switchback path T2. The rotation direction of transport roller pair 40 is then switched, and the medium enters reversal path T3 and is sent to transport roller pair 34 by transport roller pairs 41, 42, and 43.

[0045] Reference numeral 10 denotes an ink storage section serving as a liquid storage section that stores ink before ejection. Ink to be ejected from the line head 12 is supplied from the ink storage section 10 to the line head 12 via a tube (not shown). The ink storage section 10 stores, as an example, black, yellow, magenta, and cyan inks.

[0046] The above is the overall configuration of the printer 1, and the control unit 80 that controls the printer 1 will now be described with reference to FIG. The control unit 80 performs various controls, including recording control, in the printer 1. Note that Fig. 2 shows only the components necessary for explanation in this specification, and other components are omitted. The control unit 80 is electrically connected to an output system including a feed motor 87, a transport motor 88, a belt rotation motor 89, an operation panel 90, and the line head 12. A feed motor 87 is a power source for each of the pick rollers and each of the feed roller pairs described above. A transport motor 88 is a power source for each of the transport roller pairs described above. A belt rotation motor 89 is a power source for the transport belt 53. Each of the motors is, for example, a DC motor. Each of the motors is provided with a rotary encoder (not shown), and the control unit 80 can detect the rotation direction, rotation amount, and rotation speed of each of the motors using this rotary encoder. In other words, the control unit 80 can detect the drive direction, drive amount, and drive speed of each drive object.

[0047] The control unit 80 includes a CPU 81 that executes a computer program, in other words, software, a volatile memory 82, and a nonvolatile memory 83. The CPU 81 performs various calculations required to execute a program 84 stored in the nonvolatile memory 83. The volatile memory 82 is used as a temporary data storage area. The nonvolatile memory 83 stores the program 84 and control parameters 85 required to execute the program 84. The program 84 includes programs that execute various processes described below, and the control parameters 85 include parameters for executing the program 84. The various processes described below are realized when the control unit 80 executes the program 84. Furthermore, the nonvolatile memory 83 stores print setting information input via the operation panel 90 .

[0048] Next, the receiving portion 60 and scraping portion 65 provided below the blade 56 will be described with reference to Figures 3 and subsequent figures. Note that the -Y direction is an example of a first direction in which the receiving portion 60 is pulled out, and the +Y direction is an example of a second direction in which the receiving portion 60 is attached. 3 and 4, a receiver 60 for receiving paper dust is provided below the blade 56. The receiver 60 is tray-shaped and can contain paper dust inside. The receiver 60 is detachably provided on the device main body 2.

[0049] A knob 60a is provided on the end of the receiving part 60 in the -Y direction, i.e., on the front side of the device, and an operator can remove the receiving part 60 from the device main body 2 by pinching the knob 60a and pulling the receiving part 60 in the -Y direction. An operator can also attach the receiving part 60 to the device main body 2 by pinching the knob 60a and pushing the receiving part 60 in the +Y direction. Furthermore, the receiving portion 60 is not limited to a form that can be completely removed from the device main body 2, and even if it is a form that cannot be removed from the device main body 2, it is sufficient as long as the collected paper dust can be collected by pulling it out of the device main body 2.

[0050] A scraping portion 65 is provided at the end of the receiving portion 60 in the +Y direction. The scraping portion 65 is a portion that comes into contact with the blade 56 to scrape paper dust from the blade 56, and is formed, for example, from an elastic material that can be elastically deformed, and further, for example, from a sponge. The scraping portion 65 may be made of other suitable materials, such as a brush.

[0051] Reference numeral 57 denotes a support member that supports the blade 56, and reference numeral 58 denotes a base portion to which the support member 57 is fixed. In this embodiment, both the support member 57 and the base portion 58 are fixedly provided relative to the device main body 2, and therefore the blade 56 is also fixedly provided. The blade 56 is always in contact with the conveyor belt 53 in an inclined position, and the scraped paper dust adheres mainly to the +X direction surface of the blade 56. The scraping portion 65 is positioned in the +X direction relative to the blade 56 so that it can scrape the paper dust from the blade 56. The upper end of the scraping portion 65 may or may not be in contact with the conveying belt 53, but it is preferable to form a certain amount of gap between the upper end of the scraping portion 65 and the conveying belt 53 so that the scraped paper dust does not adhere to the conveying belt 53.

[0052] In state ST1 in Fig. 4, i.e., when the receiving portion 60 is attached, the scraping portion 65 is positioned in the +Y direction relative to the blade 56. When the receiving portion 60 is pulled out in the -Y direction from this state as shown in state ST2, the scraping portion 65 scrapes paper dust off the blade 56 as the receiving portion 60 moves. The scraped paper dust is received by the receiving portion 60. Note that in Figs. 3 and 4, the symbol Da schematically indicates paper dust adhering to the blade 56, and the symbol Db schematically indicates paper dust received by the receiving portion 60. Although not shown, when the receiving portion 60 is completely pulled out from the device body 2, the scraping portion 65 scrapes off paper dust adhering to the blade 56 over the entire Y-axis direction.

[0053] As described above, receiving portion 60 is pulled out from device main body 2 by being displaced in the -Y direction, and is attached to device main body 2 by being displaced in the +Y direction. Scraper 65 is provided on receiving portion 60, and comes into contact with blade 56 to scrape paper dust off blade 56 when receiving portion 60 is displaced in the -Y direction. Therefore, by pulling out the receiving portion 60, the paper dust received by the receiving portion 60 can be easily disposed of. Furthermore, there is no need to provide a separate mechanism for pulling out and attaching the receiving portion 60 from the device body 2 and a separate mechanism for moving the scraping portion 65 relative to the blade 56, which helps prevent the device from becoming too costly and large. Furthermore, the worker does not need to perform two separate actions of moving the receiving part 60 and moving the scraping part 65, thereby improving workability.

[0054] In this embodiment, the scraping unit 65 scrapes off paper dust adhering to the blade 56 when the receiving unit 60 is pulled out, i.e., when the receiving unit 60 is displaced in the -Y direction. However, if paper dust remains on the blade 56, the scraping unit 65 can also scrape off the paper dust adhering to the blade 56 when the receiving unit 60 is attached, i.e., when the receiving unit 60 is displaced in the +Y direction.

[0055] In this embodiment, the scraping portion 65 scrapes paper dust off the blade 56 when the receiving portion 60 is displaced in the -Y direction, and the scraping portion 65 is positioned in the +Y direction relative to the blade 56 when the receiving portion 60 is attached to the device main body 2 as shown in state ST1 in Figure 4. With this configuration, when the receiving portion 60 is pulled out from the attached state, the entire blade 56 in the displacement direction of the receiving portion 60 can be cleaned. In this embodiment, when the receiving portion 60 is attached, the entire scraping portion 65 is positioned in the +Y direction relative to the blade 56, but this is not limited to this, and only a portion of the scraping portion 65 may be positioned in the +Y direction relative to the blade 56.

[0056] Next, other embodiments will be described with reference to Figures 5 and 6. In the following embodiments, the same components as those in the previously described embodiments are designated by the same reference numerals, and redundant description will be avoided. Modified versions of previously described components are distinguished by adding capital letters to the numerals. For ease of illustration, each component in Figure 6 is viewed from the -X direction, unlike Figure 4.

[0057] In the embodiment shown in FIGS. 5 and 6, the blade 56 is displaceable in the vertical direction. More specifically, blade 56 is supported by support member 57A. Support member 57A is held displaceable in the Z-axis direction by guide portion 58b provided on base portion 58A. Note that base portion 58A is provided with stopper 58c, and stopper 58c defines the displacement limit of support member 57A in the -Z direction.

[0058] A first cam follower portion 71 and a second cam follower portion 72 are provided on the underside of support member 57A. As shown in Fig. 6, the second cam follower portion 72 is provided at a distance from the first cam follower portion 71 in the -Y direction. The first cam follower portion 71 has a slope 71a formed in the -Y direction, and the second cam follower portion 72 has a slope 72a formed in the -Y direction. As shown in FIG. 5, the first cam follower portion 71 and the second cam follower portion 72 are provided so that their positions in the X-axis direction are offset.

[0059] A first cam portion 61 and a second cam portion 62 are provided on the upper side of the receiving portion 60A in the −X direction. The second cam portion 62 is provided at a distance from the first cam portion 61 in the −Y direction, as shown in FIG. 5, the first cam portion 61 and the second cam portion 62 are provided so that their positions in the X-axis direction are offset. The first cam portion 61 is provided at a position where it can engage with the first cam follower portion 71 in the X-axis direction, and the second cam portion 62 is provided at a position where it can engage with the second cam follower portion 72 in the X-axis direction.

[0060] 5 and state ST1 in Fig. 6 are states in which the receiving portion 60A is attached to the device main body 2. In this state, the first cam follower portion 71 rides on the first cam portion 61, and the second cam follower portion 72 rides on the second cam portion 62. In this state, the support member 57A and the blade 56 are pushed up to the maximum in the +Z direction, which allows the blade 56 to come into contact with the conveyor belt 53 and remove paper dust adhering to the conveyor belt 53.

[0061] When the receiving portion 60A is pulled out in the -Y direction from this state, the first cam portion 61 disengages from the first cam follower portion 71, and the second cam portion 62 disengages from the second cam follower portion 72, as shown in state ST2 in Figure 5 and state ST2 in Figure 6. This causes the support member 57A and the blade 56 to be displaced in the -Z direction, and the blade 56 moves away from the conveyor belt 53. In this state, the scraping portion 65A is located in the +Y direction relative to the blade 56, and as the receiving portion 60A is further pulled out in the -Y direction, the scraping portion 65A scrapes paper dust off the blade 56.

[0062] 5 and state ST1 in FIG. 6, i.e., the attached state of receiving portion 60A, only the weight of support member 57A and blade 56 acts between first cam portion 61 and first cam follower portion 71, and between second cam portion 62 and second cam follower portion 72. However, a pressing member, such as a spring, that presses support member 57A in the -Y direction may be separately provided.

[0063] Next, the scraping unit 65A according to this embodiment is provided with a receiving portion 65b. The receiving portion 65b is provided in a position and size that allows it to receive the blade 56 separated from the conveyor belt 53. However, the inner surface of the receiving portion 65b is formed so that it can come into contact with the surface of the blade 56, particularly the +X direction surface, so that it can scrape off paper dust adhering to the received blade 56. Furthermore, in this embodiment, the inner surface of the receiving portion 65b can also come into contact with the surface of the blade 56 in the -X direction. In this way, scraping portion 65A is an elastic member having receiving portion 65b that receives blade 56, which makes it easier to scrape paper dust from blade 56. In particular, it makes it easier to scrape paper dust from the entire blade 56, including the tip of blade 56.

[0064] As described above, in this embodiment, the blade 56 is displaceable between a contact position where it contacts the conveyor belt 53 and a separated position where it is separated from the conveyor belt 53. When the scraping portion 65A scrapes paper dust off the blade 56, the blade 56 is positioned at the separated position. This makes it easier for the scraping portion 65A to scrape off the entire blade 56, specifically the entire blade 56 including the tip portion that contacts the conveyor belt 53, and enables paper dust to be scraped off efficiently.

[0065] Furthermore, when scraping portion 65A scrapes paper dust off blade 56, scraping portion 65A scrapes off the portion of blade 56 that comes into contact with conveyor belt 53, specifically the tip portion, as well. This allows paper dust to be scraped off efficiently.

[0066] In this embodiment, the scraping portion 65A scrapes paper dust off the blade 56 when the receiving portion 60A is displaced in the -Y direction. The scraping portion 65A is located in the +Y direction relative to the blade 56 when the receiving portion 60A is attached to the device body 2. In conjunction with the displacement of the receiving portion 60A in the -Y direction from the state where it is attached to the device body 2, the blade 56 is displaced from the contact position to the separated position before the scraping portion 65A comes into contact with the blade 56.

[0067] This allows the entire blade 56 in the displacement direction of the receiving portion 60A to be cleaned when the receiving portion 60A is pulled out from the attached state. Furthermore, since the blade 56 is displaced from the contact position to the separated position in conjunction with the displacement of the receiving portion 60A, the operator does not need to operate the receiving portion 60A and the blade 56 separately, improving the ease of use of the device. Furthermore, when scraping unit 65A starts scraping paper dust from blade 56, blade 56 has already been displaced to the separated position, so it is possible to scrape paper dust off the entire blade 56 throughout the entire scraping process. In addition, blade 56 does not displace while scraping unit 65A is scraping paper dust, which prevents damage to blade 56, such as deformation.

[0068] The scraping portion 65A scrapes paper dust from the blade 56 when the receiving portion 60 is pulled out, i.e., when it is displaced in the -Y direction, but it may also scrape paper dust from the blade 56 when the receiving portion 60 is attached, i.e., when it is displaced in the +Y direction.

[0069] In addition, the blade 56 is displaced from the separated position to the contact position after the scraping portion 65A separates from the blade 56 in conjunction with the displacement of the receiving portion 60A in the +Y direction from the state in which it is pulled out from the device body 2. In other words, the blade 56 does not displace from the separated position to the contact position while the scraping portion 65A is in contact with the blade 56. This makes it possible to suppress deformation or damage to the blade 56. Incidentally, the inclined surface 71a of the first cam follower portion 71 prevents the first cam portion 61 from getting caught on the first cam follower portion 71 when the receiving portion 60A is attached. Similarly, the inclined surface 72a of the second cam follower portion 72 prevents the second cam portion 62 from getting caught on the second cam follower portion 72 when the receiving portion 60A is attached. This allows the blade 56 to be displaced smoothly and reliably from the separated position to the contact position.

[0070] In this embodiment, the receiving portion 60A can engage with and disengage from a support member 57A that supports the blade 56. The blade 56 is displaced from the separated position to the contact position when the receiving portion 60A engages with the support member 57A. The blade 56 is also displaced from the contact position to the separated position when the receiving portion 60A disengages from the support member 57A. With this configuration, a power source for displacing the blade 56 is not required, and an increase in the cost of the device can be suppressed.

[0071] Next, still another embodiment will be described with reference to FIG. The scraping portion 65 scrapes off paper dust from the blade 56 when the receiving portion 60 is displaced in the -Y direction and the +Y direction. In this configuration, the receiving portion 60B has a first storage portion 60c that is a portion that receives paper dust in the -Y direction relative to the scraping portion 65, and a second storage portion 60d that is a portion that receives paper dust in the +Y direction. This makes it possible to prevent paper dust from scattering to positions away from the receiving portion 60 when the receiving portion 60 is displaced in the -Y direction and the +Y direction.

[0072] Next, still another embodiment will be described with reference to FIG. The device main body 2 is equipped with an opening / closing unit 4 that can be opened and closed relative to the device main body 2. Figure 8 shows the opening / closing unit 4 in a closed state, and the opening / closing unit 4 can be opened in the direction of arrow F. When the opening / closing unit 4 is opened, the inside of the device main body 2 is exposed. Receiving portion 60C is connected to opening / closing portion 4. Receiving portion 60C moves in the -Y direction when opening / closing portion 4 opens, and moves in the +Y direction when opening / closing portion 4 closes. With this configuration, scraping portion 65 can scrape paper dust off blade 56 in conjunction with the opening / closing of opening / closing portion 4, eliminating the need to operate receiving portion 60C independently, improving the ease of use of the device.

[0073] The opening / closing unit 4 may open and close any part of the device main body 2, but as in this embodiment, it is preferable that the receiving unit 60C is located in a position that is exposed when the opening / closing unit 4 is opened. This makes it possible to easily remove paper dust that has accumulated in the receiving unit 60C by opening the opening / closing unit 4.

[0074] In each of the above-described embodiments, the control unit 80 may count the number of media conveyed by the conveyor belt 53, and when this count value exceeds a threshold, may cause the operation panel 90 to notify the user to pull out the receiving unit 60 from the device main body 2. This prevents the receiving unit 60 from exceeding its capacity to accommodate paper dust. Also, a sensor (not shown) may be provided to detect the amount of paper dust in the receiving section 60, for example, the pile height. Then, when the pile height of paper dust reaches a predetermined value, the control section 80 may cause the operation panel 90 to notify the user to pull out the receiving section 60 from the device main body 2.

[0075] The present invention is not limited to the embodiments and modifications described above, and various modifications are possible within the scope of the invention described in the claims, and it goes without saying that these modifications are also included within the scope of the present invention. [Explanation of symbols]

[0076] 1...inkjet printer, 2...device main body, 3...medium cassette, 4...opening / closing section, 8...output tray, 9...capping section, 9a...cap, 10...ink storage section, 12...line head, 12a...nozzle surface, 13...nozzle, 14...wiping unit, 15...wiper, 16...first guide, 17...ball screw, 18...second guide, 19...screw section, 21...pick roller, 25...feed roller pair, 29-43...transport roller pair, 52...belt unit, 53...transport belt, 54...first roller, 55...second roller, 56...blade, 57, 57A...support member, 58, 58 A...base portion, 58b...guide portion, 58c...stopper, 60, 60A, 60B, 60C...receiving portion, 60a...grip portion, 60c...first storage portion, 60d...second storage portion, 61...first cam portion, 62...second cam portion, 65, 65A...scraping portion, 65b...receiving portion, 71...first cam follower portion, 71a...inclined surface, 72...second cam follower portion, 72a...inclined surface, 80...control portion, 81...CPU, 82...volatile memory, 83...non-volatile memory, 84...program, 85...control parameters, 87...feed motor, 88...transport motor, 89...belt rotation motor, 90...operation panel

Claims

1. a transport unit that transports the medium; a cleaning unit that cleans the conveying unit; a scraping unit that contacts the cleaning unit and scrapes paper dust from the cleaning unit; a receiving portion provided below the scraping portion and configured to receive paper dust; Equipped with the receiving portion is pulled out from the device body by being displaced in a first direction, and is attached to the device body by being displaced in a second direction opposite to the first direction, the scraping portion is provided on the receiving portion, and when the receiving portion is displaced in at least one of the first direction and the second direction, the scraping portion comes into contact with the cleaning portion and scrapes off paper dust from the cleaning portion. A medium transport device characterized by:

2. 2. The medium transport device according to claim 1, the scraping portion scrapes off paper dust from the cleaning portion when the receiving portion is displaced in the first direction; At least a part of the scraping unit is positioned in the second direction relative to the cleaning unit when the receiving unit is attached to the apparatus body. A medium transport device characterized by:

3. 2. The medium transport device according to claim 1, The cleaning unit includes: a contact position where the conveying unit comes into contact; a spaced position spaced from the conveying unit; and When the scraping unit scrapes paper dust from the cleaning unit, the cleaning unit is located at the separated position. A medium transport device characterized by:

4. 4. The medium transport device according to claim 3, When the scraping unit scrapes off paper dust from the cleaning unit, the scraping unit scrapes off the paper dust from the cleaning unit including a portion where the cleaning unit contacts the conveying unit. A medium transport device characterized by:

5. 4. The medium transport device according to claim 3, the scraping portion scrapes off paper dust from the cleaning portion when the receiving portion is displaced in the first direction; at least a portion of the scraping unit is positioned in the second direction relative to the cleaning unit when the receiving unit is attached to the apparatus body; the cleaning unit is displaced from the contact position to the separated position before the scraping unit comes into contact with the cleaning unit in response to the receiving unit being displaced in the first direction from a state in which the receiving unit is attached to the device body. A medium transport device characterized by:

6. 4. The medium transport device according to claim 3, the receiving portion is capable of engaging with and disengaging from a support member that supports the cleaning portion, When the receiving portion engages with the support member, the cleaning portion is displaced from the separated position to the contact position, When the receiving portion disengages from the support member, the cleaning portion is displaced from the contact position to the separated position. A medium transport device characterized by:

7. 5. The medium transport device according to claim 4, The cleaning unit is composed of a plate-shaped member, The scraping portion is an elastic member having a receiving portion that receives the plate-like member. A medium transport device characterized by:

8. 2. The medium transport device according to claim 1, The scraping unit is composed of a brush. A medium transport device characterized by:

9. 2. The medium transport device according to claim 1, the scraping portion scrapes off paper dust from the cleaning portion when the receiving portion is displaced in the first direction and the second direction; the receiving portion has a portion that receives paper dust in the first direction relative to the scraping portion and a portion that receives paper dust in the second direction relative to the scraping portion. A medium transport device characterized by:

10. 2. The medium transport device according to claim 1, an opening / closing unit that can be opened and closed relative to the device body; The receiving portion is linked to the opening and closing of the opening and closing portion, and moves in the first direction when the opening and closing portion is opened, and moves in the second direction when the opening and closing portion is closed. A medium transport device characterized by:

11. The medium transport device according to claim 10, The receiving portion is located in a position that is exposed when the opening and closing portion is opened. A medium transport device characterized by:

12. 2. The medium transport device according to claim 1, a control unit that controls the device; a notification unit that issues a notification under the control of the control unit; Equipped with When the number of sheets of media conveyed by the conveying unit exceeds a threshold, the control unit notifies the notifying unit to pull out the receiving unit from the device body. A medium transport device characterized by:

13. 2. The medium transport device according to claim 1, the conveying unit conveys the medium by a conveying belt; A medium transport device characterized by:

14. a medium transport device according to any one of claims 1 to 13; a recording unit that records on the medium; A recording device comprising:

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