Recording apparatus and control method thereof

Abstract

In a recording apparatus that drives a medium receiving tray by a motor, there is room for improvement from the viewpoint of suppressing an unexpected action of the medium receiving tray and a load added to the motor. A recording apparatus and a control method thereof are provided. The recording apparatus includes: a medium receiving tray (5) that receives a medium (P) discharged by a discharge roller (4) and is capable of assuming a first state and a second state that is displaced in a discharge direction compared to the first state; a power transmission portion (7) that is capable of assuming a power transmission state in which the power transmission portion (7) transmits power of a motor to the medium receiving tray (5) and a power non-transmission state in which the power transmission portion (7) does not transmit power of the motor, and includes a friction gear (9) as a power transmission path member (8); a switching lever portion (10) that switches the power non-transmission state and the power transmission state by movement of a carriage (2); and a holding portion (11) that holds a position of the switching lever portion.

Description

Technical Field

[0001] This invention relates to a recording apparatus for recording on a medium. Background Technology

[0002] Recording devices, such as fax machines and printers, include those with a media receiving tray that receives and discharges the recorded media. Furthermore, such media receiving trays are configured such that, as shown in Patent Document 1, a motor can switch between a retracted state and an extended state. In the recording device described in Patent Document 1, power is transmitted from the discharge roller to the discharge tray, which serves as the media receiving tray, causing the discharge tray to move.

[0003] In the configuration described in Patent Document 1, a gear for transmitting power is provided in the discharge roller, which is called a trigger output gear. The trigger output gear is configured to be movable in the axial direction of the discharge roller by the movement of the carriage, and to be displaced to a position engaged with a gear called an input gear and a position not engaged with the input gear by the movement of the carriage. Furthermore, by rotating the discharge roller in the state where the trigger output gear is engaged with the input gear, power is transmitted from the discharge roller to the discharge tray, and the discharge roller is displaced.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent document 1: Japanese Patent Application Publication No. 2018-16480.

[0007] The configuration of the medium receiving tray driven by the electric motor, and especially the configuration of the recording device as described in Patent Document 1 above, which transmits power from the electric motor used to drive other components to the medium receiving tray, has room for further improvement in the following aspects.

[0008] First, when the device is configured in a non-power transmission state, where power is not transmitted from the motor used to drive other components to the medium receiving tray, the medium receiving tray can move freely. Therefore, there is a possibility that the medium receiving tray may move unexpectedly when the device is tilted, and it is desirable to include a configuration that takes this into account. Second, when the device is configured in a power transmission state, where power is transmitted from the motor used to drive other components to the medium receiving tray, it is preferable to minimize the load added to the motor from the viewpoint of suppressing power consumption. Summary of the Invention

[0009] The recording apparatus of the present invention, which solves the above-mentioned technical problems, is characterized by comprising: a recording head mounted on a reciprocating carriage for recording on a medium; a discharge roller for discharging the recorded medium; a medium receiving tray for receiving the medium discharged by the discharge roller and capable of taking on a first state and a second state, wherein in the second state the medium receiving tray is displaced in the discharge direction of the medium compared to the first state; an electric motor as the power source for the discharge roller; a power transmission unit capable of taking on a power transmission state and a power non-transmission state, and including a friction gear as a power transmission path component, wherein in the power transmission state the power transmission unit transmits the power of the electric motor from the electric motor to the medium receiving tray, and in the power non-transmission state the power transmission unit does not transmit the power of the electric motor from the electric motor to the medium receiving tray; a switching lever for switching the power non-transmission state and the power transmission state of the power transmission unit by receiving the power of the carriage for movement; and a holding unit for holding the position of the switching lever.

[0010] Furthermore, the recording apparatus of the present invention is characterized by comprising: a recording head mounted on a reciprocating carriage for recording on a medium; a discharge roller for discharging the recorded medium; a medium receiving tray for receiving the medium discharged by the discharge roller and capable of assuming a first state and a second state, wherein in the second state, the medium receiving tray is displaced in the discharge direction of the medium compared to the first state; an electric motor as a power source for the discharge roller; and a power transmission unit capable of assuming a power transmission state and a power non-transmission state, and including a friction gear as a power transmission path component, wherein in the power transmission state, the power transmission unit... The motor transmits its power to the medium receiving tray. In the non-transmission state, the power transmission unit does not transmit the motor's power from the motor to the medium receiving tray. The switching lever switches between the non-transmission state and the transmission state of the power transmission unit by receiving power from the carriage and moving accordingly. The transmission direction switching unit switches between the non-transmission state and the transmission state of the power transmission unit by moving the carriage in one direction. The transmission direction switching unit is located upstream of the friction gear, which serves as the power transmission path component, in the power transmission direction.

[0011] The control method for the recording device of the present invention is a control method for the recording device described in the fourteenth aspect described later, characterized in that the following control is performed: rotating the shaft to set the switching lever from a retracted state to an erected state; pushing the erected switching lever by the carriage to move the erected switching lever to a position that is either the power transmission open state or the power transmission closed state to perform each action; and rotating the shaft in the opposite direction while the carriage is away from the switching lever to return the switching lever to the retracted state. Attached Figure Description

[0012] Figure 1 This is a perspective view of the main part of the media receiving tray portion of the recording device according to Embodiment 1.

[0013] Figure 2 (A) and Figure 2 (B) is an enlarged perspective view and a partial cross-sectional view of the switching rod portion in Embodiment 1.

[0014] Figure 3 (A) and Figure 3 (B) is an enlarged perspective view of the switching rod portion and the rotation stop portion in Embodiment 1.

[0015] Figure 4 (A) and Figure 4 (B) is a cross-sectional view of the switching rod portion and a perspective view of the retaining portion in Embodiment 1.

[0016] Figure 5 This is a cross-sectional view of the switching rod portion in Embodiment 1.

[0017] Figure 6 (A) Figure 6 (B) is a cross-sectional view of the switching rod portion in Embodiment 1.

[0018] Figure 7 (A) Figure 7 (B) is a cross-sectional view of the switching rod portion in Embodiment 1.

[0019] Figure 8 (A) and Figure 8 (B) is a perspective view of the main part of the rotating stop part in Embodiment 1 and an enlarged perspective view of that part.

[0020] Figure 9 (A) and Figure 9 (B) is a perspective view of the main part of the rotating stop part in Embodiment 1 and an enlarged perspective view of that part.

[0021] Figure 10(A) and Figure 10 (B) is a perspective view of the main part of the rotating stop part in Embodiment 1 and an enlarged perspective view of that part.

[0022] Figure 11 This is a perspective view of the main part of the media receiving tray portion of the recording device according to Embodiment 2.

[0023] Figure 12 This is an enlarged perspective view of the non-transmission state of the switching rod portion in Embodiment 2.

[0024] Figure 13 This is an enlarged side view of the compound gear portion in Embodiment 2.

[0025] Figure 14 This is an enlarged perspective view of the open power transmission state of the switching rod portion in Embodiment 2.

[0026] Figure 15 This is an enlarged perspective view of the closed power transmission state of the switching rod portion in Embodiment 2.

[0027] Symbol Explanation

[0028] 1. Recording device; 2. Carriage; 3. Recording head; 4. Discharge roller; 5. Media receiving tray; 6. Motor; 7. Power transmission unit; 8. Power transmission path component; 9. Friction gear; 10. Switching lever; 11. Holding part; 12. Cylindrical part; 13. Pin; 14. Circumferential track; 15. Cam surface; 16. Cam part; 17. First cam position; 18. Second cam position; 19. Third cam position; 20. Fourth cam position; 21. Spring component for holding part; 22. Spring component for switching lever; 23. Rotation stop part; 24. First rack part; 25. Second rack part; 26. Release gear; 27. Shaft; 28. Base end; 29. ​​Locking tooth; 30. Shaft; 31, 32, Conical object; 34, 35, Contacted part; 40, Carriage contact part; 41, Transmission gear; 42, Movable transmission gear; 43, Compression spring; 44, Separator; 45, Compression spring; 46, Rack; 47, Tray drive shaft; 48, Pinion; 49, Gear; 50, Shaft; 51, Gear; 52, Compression spring; 53, Flange; 54, Weir; 60, Switching lever; 61, Recording device; 62, Transmission direction switching part; 63, First gear; 64, Second gear; 65, Compound gear; 66, Drive gear; 67, Power transmission part; 68, Power transmission path component; 71, First spring; 72, Second spring; F, Discharge direction; P, Medium. Detailed Implementation

[0029] The present invention will first be briefly described below.

[0030] The recording apparatus according to the first aspect of the present invention, which is intended to solve the aforementioned technical problems, is characterized by comprising: a recording head mounted on a reciprocating carriage for recording on a medium; a discharge roller for discharging the recorded medium; a medium receiving tray for receiving the medium discharged by the discharge roller and capable of taking on a first state and a second state, wherein in the second state the medium receiving tray is displaced in the discharge direction of the medium compared to the first state; an electric motor as the power source for the discharge roller; a power transmission unit capable of taking on a power transmission state and a power non-transmission state, and including a friction gear as a power transmission path component, wherein in the power transmission state the power transmission unit transmits the power of the electric motor from the electric motor to the medium receiving tray, and in the power non-transmission state the power transmission unit does not transmit the power of the electric motor from the electric motor to the medium receiving tray; a switching lever for switching the power non-transmission state and the power transmission state of the power transmission unit by receiving the power of the carriage for movement; and a holding unit for holding the position of the switching lever.

[0031] According to this aspect, the switching lever switches between the power-off state and the power-transmitting state by receiving power from the carriage to move. Furthermore, a holding portion is provided to maintain the position of the switching lever. Therefore, because the switching lever is held in position by the holding portion, each of the power-off state and the power-transmitting state of the power transmission unit can be stably maintained.

[0032] The recording device according to the second aspect of the present invention is characterized in that, in the first aspect, the switching lever portion has a pin protruding toward the holding portion, the holding portion having a cam portion, and the power transmission switching portion switching between the power non-transmission state and the power transmission state by the pin moving in one direction in the cam portion.

[0033] According to this aspect, the non-transmission state and the transmission state of the power transmission unit are switched by the pin moving in one direction on the circumferential trajectory while in contact with the cam portion. Thus, the switching of the non-transmission state and the transmission state by the switching lever can be achieved with a simple configuration.

[0034] The recording device according to the third aspect of the present invention is characterized in that, in the second aspect, the cam portion has a first cam position, a second cam position, a third cam position and a fourth cam position on the circumferential track, the cam portion is pushed by a retaining portion by a spring member in a direction that maintains it in contact with the pin, and the cam portion is configured such that the pin can only move on the circumferential track in a direction that is sequentially the first cam position, the second cam position, the third cam position, the fourth cam position and the first cam position.

[0035] According to this aspect, the cam portion is configured such that the pin can only move along the circumferential trajectory in the direction of the first cam position, the second cam position, the third cam position, the fourth cam position, and then back to the first cam position. Thus, with a simple configuration, the switching lever can switch between the power-non-transmitting state and the power-transmitting state, and further maintain each state.

[0036] The recording apparatus according to the fourth aspect of the present invention is characterized in that, in the third aspect, the switching lever receives power from the carriage to move, causing the pin to move from a state engaged with the fourth cam position to a state engaged with the first cam position, then to a state engaged with the second cam position, and after moving to the state engaged with the second cam position, when the switching lever is freed from the carriage power, the pin returns to the fourth cam position via the spring force of the spring member of the switching lever.

[0037] According to this aspect, the switching of the switching lever between the non-transmitting power state and the transmitting power state can be easily achieved by the power of the carriage and the spring force of the spring component of the switching lever, and further, the maintenance of each state can be achieved.

[0038] The recording device according to the fifth aspect of the present invention is characterized in that, in the fourth aspect, the state in which the pin of the switching lever is engaged with the position of the first cam generates the power non-transmission state, and the state in which the pin is engaged with the position of the fourth cam generates the power transmission state.

[0039] According to this aspect, the configuration is such that the state in which the pin of the switching lever is engaged with the first cam position generates the power non-transmission state, and the state in which the pin is engaged with the fourth cam position generates the power transmission state. Thus, with a simple configuration, the switching lever can switch between the power non-transmission state and the power transmission state, and maintain each state.

[0040] The recording apparatus according to the sixth aspect of the present invention is characterized in that, in any one of the first to fifth aspects, the recording apparatus includes a rotation stopping part, which moves to a position that stops the rotation of the friction gear in the power non-transmission state, and separates from the position that stops the rotation of the friction gear in the power transmission state.

[0041] According to this aspect, a rotation-stopping part is provided, which moves to a position that stops the rotation of the friction gear in the non-power transmission state, and separates from the position that stops the rotation of the friction gear in the power transmission state. Therefore, because the rotation-stopping part stops the rotation of the friction gear in the non-power transmission state, the possibility of the medium receiving tray moving unintentionally due to its own weight or other reasons can be reduced.

[0042] The recording apparatus according to the seventh aspect of the present invention is characterized in that, in the sixth aspect, the recording apparatus includes: a first rack portion disposed on the switching lever portion; a second rack portion disposed on the rotation stop portion; and a release gear meshing with the first rack portion and the second rack portion. When the switching lever portion is moved by the slide and the pin moves from the first cam position to the second cam position, the release gear is rotated by the movement of the first rack portion. The rotation of the release gear causes the second rack portion to move in the opposite direction to the first rack portion, thereby separating the rotation stop portion from the position where the rotation of the friction gear is stopped.

[0043] According to this aspect, when the switching lever is moved by the carriage, causing the pin to move from the first cam position to the second cam position, the first rack portion rotates the release gear by this movement. Furthermore, the rotation of the release gear causes the second rack portion to move in the opposite direction to the first rack portion, thereby separating the rotation-stopping portion from the position that stops the rotation of the friction gear.

[0044] Therefore, even if the spring force of the switching lever spring component is set to be small, the power of the carriage can support the spring force, which can increase the certainty of separating the rotation stop part from the position that stops the rotation of the friction gear.

[0045] The recording apparatus according to the eighth aspect of the present invention is characterized in that, in the seventh aspect, when the switching lever is disengaged from the power of the carriage and the pin moves from the second cam position to the third cam position,

[0046] The first rack portion causes the release gear to rotate in the opposite direction. The rotation of the release gear causes the second rack portion to move in the opposite direction, thereby causing the rotation stop portion to move toward the position where the rotation of the friction gear is stopped. When the pin moves from the third cam position to the fourth cam position, the first rack portion moves away from the release gear, and the second rack portion is pushed by the switching rod portion to separate the rotation stop portion from the position where the rotation of the friction gear is stopped.

[0047] According to this aspect, when the pin moves from the second cam position to the third cam position, the first rack portion causes the release gear to rotate in the opposite direction. The rotation of the release gear causes the second rack portion to move in the opposite direction, thereby moving the rotation-stopping portion towards the position where the rotation of the friction gear is stopped. Furthermore, the configuration is such that when the pin moves from the third cam position to the fourth cam position, the first rack portion disengages from the release gear, and the second rack portion is pushed by the switching lever portion, causing the rotation-stopping portion to separate from the position where the rotation of the friction gear is stopped.

[0048] Therefore, even if the spring force of the spring component of the switching lever is set to be small, the power of the carriage can support the spring force, which can improve the certainty of separating the rotation stop part from the position that stops the rotation of the friction gear.

[0049] The recording apparatus according to the ninth aspect of the present invention is characterized in that, in the eighth aspect, the recording apparatus comprises: a tapered member with a narrow tip, formed on the side of the second rack portion; and a contact portion, which, depending on the position of movement of the second rack portion, takes on a contact state in which the tapered member contacts the contact portion, and a non-contact state in which the tapered member does not contact the contact portion. The tapered member is in the non-contact state when the pin is in the first cam position, and in the contact state when the pin is in the fourth cam position.

[0050] According to this aspect, even if the rotation stop part is displaced due to the external force applied to the medium receiving tray, one of the cones of the second rack part will come into contact with one of the contacted parts and stop, so that the above displacement can be suppressed.

[0051] Furthermore, when the rotation stop part is separated from the position that stops the rotation of the friction gear in the displaced state, the rotation stop part can be separated from the friction gear without being affected by the displacement because the power of the carriage supports the spring force of the spring member of the switching lever. Additionally, the rotation stop part moves in the separation direction, and both of the cones of the second rack stop at the position of contact with the contacted part. Thus, the displacement of the rotation stop part is corrected. Therefore, subsequent movement of the rotation stop part can be performed without the influence of the lateral pressure.

[0052] The tenth aspect of the present invention relates to a recording apparatus characterized by comprising: a recording head mounted on a reciprocating carriage for recording on a medium; a discharge roller for discharging the recorded medium; a medium receiving tray for receiving the medium discharged by the discharge roller and capable of assuming a first state and a second state, wherein in the second state the medium receiving tray is displaced in the discharge direction of the medium compared to the first state; an electric motor as a power source for the discharge roller; and a power transmission unit capable of assuming a power transmission state and a power non-transmission state, and including a friction gear as a power transmission path component, wherein in the power transmission state the power transmission... The power transmission unit transmits the power of the motor from the motor to the medium receiving tray. In the power non-transmission state, the power transmission unit does not transmit the power of the motor from the motor to the medium receiving tray. The switching lever switches between the power non-transmission state and the power transmission state of the power transmission unit by receiving the power of the carriage and moving. The transmission direction switching unit switches between the power non-transmission state and the power transmission state of the power transmission unit by moving the carriage in one direction. The transmission direction switching unit is located upstream of the friction gear, which is the component of the power transmission path, in the power transmission direction.

[0053] According to this aspect, the switching lever switches between the power-non-transmission state and the power-transmission state by receiving power from the carriage to move. Furthermore, it includes a transmission direction switching unit that switches between the power-non-transmission state and the power-transmission state by moving the carriage in one direction; this transmission direction switching unit is located upstream of the friction gear, which serves as the power transmission path component, in the power transmission direction.

[0054] Thus, the switching between the non-power transmission state and the power transmission state can be achieved through a simple configuration that only involves the carriage moving in one direction.

[0055] The recording apparatus according to the eleventh aspect of the present invention is characterized in that, in the tenth aspect, the transmission direction switching unit is a compound gear having a first gear and a second gear, wherein the second gear is always meshed with the friction gear, and the drive gear that transmits the power of the electric motor moves when the switching lever moves, and the drive gear can be positioned to take the following states depending on the position of the drive gear: a power transmission non-transmission state, an open power transmission state that moves the media receiving tray from the first state to the second state, and a power transmission closed state that moves the media receiving tray from the second state to the first state.

[0056] According to this aspect, the transmission direction switching unit is a compound gear having a first gear and a second gear, and the second gear is always engaged with the friction gear. Furthermore, the configuration is such that, by moving the switching lever, the drive gear that transmits the power of the electric motor moves, and the configuration allows for the following states depending on the position of the drive gear: a power-off state, a power-on state that moves the media receiving tray from the first state to the second state, and a power-off state that moves the media receiving tray from the second state to the first state.

[0057] Therefore, the simple configuration of the compound gear enables the power transmission switching unit to switch between the power-off state and the power transmission state. Furthermore, the power-off state, the power-on state, and the power-off state can be easily achieved based on the position of the drive gear.

[0058] The recording apparatus according to the twelfth aspect of the present invention is characterized in that, in the eleventh aspect, the switching lever is pushed by a first spring and a second spring located on both sides of the moving direction, the drive gear is located between the switching lever and the second spring and is pressed against the switching lever by the second spring, and the spring force of the first spring is greater than the spring force of the second spring.

[0059] According to this aspect, the switching lever is pushed by a first spring and a second spring located on both sides of the moving direction. Furthermore, the spring force of the first spring is greater than that of the second spring. Therefore, when the switching lever is freed from the power of the carriage, it can automatically return to the position of being in the non-transmitting power state by the spring force of the first spring.

[0060] The recording apparatus according to the thirteenth aspect of the present invention is characterized in that, in the twelfth aspect, the rotation stop portion is configured to be movable between the first spring and the switching lever portion, the rotation stop portion being pressed against the switching lever portion by the first spring, and moving to a position engaging with the first gear of the compound gear in the power non-transmission state, and moving to a position not engaging with the first gear in the power transmission state.

[0061] According to this aspect, the rotation stop part is configured to move between the first spring and the switching lever. Furthermore, the rotation stop part is pressed against the switching lever by the first spring, and moves towards a position engaging with the first gear of the compound gear in the non-power transmission state, and towards a position not engaging with the first gear in the power transmission state. Therefore, because the rotation stop part stops the rotation of the compound gear by moving towards the position engaging with the first gear in the non-power transmission state, the possibility of the media receiving tray unintentionally moving due to its own weight or other reasons can be reduced.

[0062] The recording device according to the fourteenth aspect of the present invention is characterized in that, in the twelfth or thirteenth aspect, the switching lever is able to move along an axis and rotate about an axis under the power of the carriage while being pushed from both sides of the moving direction by the first spring and the second spring, and the switching lever rotates integrally due to friction when the axis rotates.

[0063] According to this aspect, the switching lever is rotatable about the axis, and rotates as a whole due to friction when the axis rotates. Therefore, the carriage contact portion of the switching lever, which is pushed by the carriage, can be positioned within the operating range of the carriage. Consequently, it is possible to suppress the enlargement of the recording device in the width direction.

[0064] Specifically, the carriage contact portion can be configured to a range of movement, for example, for re-identifying its own position outside of the recording operation, or for moving the carriage outside the range of the recording operation. When the media receiving tray is in the open power transmission state or the closed power transmission state, the switching lever is set to an upright state so that the carriage is in contact with the carriage contact portion while moving. On the other hand, when the carriage is in the position re-identification operation, the switching lever is rotated together by rotating the axis in the opposite direction, changing the position from upright to tilted and retracted so that the carriage contact portion is not in contact with the carriage.

[0065] The control method for the recording device of the present invention is a control method for the recording device described in the fourteenth aspect, characterized in that the following control is performed: the shaft is rotated to set the switching lever from a retracted state to an erected state; the erected switching lever is pushed by the carriage to move the erected switching lever to a position that is either the power transmission open state or the power transmission closed state to perform each action; and while the carriage is away from the switching lever, the shaft is rotated in the opposite direction to return the switching lever to the retracted state.

[0066] According to this aspect, the same effect as that of the fourteenth aspect can be achieved.

[0067] Implementation Method 1

[0068] The following is based on Figures 1 to 10 The recording device involved in Embodiment 1 will be described in detail.

[0069] In the following explanation, as shown in the figures, the three mutually orthogonal axes are designated as the X-axis, Y-axis, and Z-axis. The Z-axis direction corresponds to the vertical direction, i.e., the direction in which gravity acts. The X-axis and Y-axis directions correspond to the horizontal direction. In the figures, the arrows indicating the three axes (X, Y, Z) represent the positive (+) direction of each.

[0070] like Figures 1 to 3 As shown, the recording apparatus 1 according to this embodiment includes a recording head 3 mounted on a reciprocating carriage 2 for recording on a medium P, a discharge roller 4 for discharging the recorded medium P, and a medium receiving tray 5 for receiving the medium P discharged by the discharge roller 4. The medium receiving tray 5 can take on a first state and a second state. In the second state, the medium receiving tray 5 is displaced in the discharge direction F of the medium P compared to the first state.

[0071] exist Figure 1 The diagram shows the media receiving tray 5 moving from a first state to the middle of a second state. The first state corresponds to the media receiving tray 5 being housed inside the recording device 1, and the second state corresponds to the media receiving tray 5 being sent out of the recording device 1 and being able to receive the media P.

[0072] Furthermore, the recording device 1 includes an electric motor 6, which serves as the power source for the discharge roller 4, and a power transmission unit 7. The power transmission unit 7 is configured to be capable of both a power transmission state, in which power is transmitted from the electric motor 6 to the medium receiving tray 5, and a power non-transmission state, in which power is not transmitted from the electric motor 6 to the medium receiving tray 5. The power transmission unit 7 includes a friction gear 9 as a power transmission path component 8.

[0073] Furthermore, the recording device 1 includes a switching lever 10 that switches between the power transmission unit 7's non-transmission state and the power transmission state by receiving power from the carriage 2, and a holding part 11 that holds the position of the switching lever 10. The switching lever 10 is mounted on the shaft 27 (described later) in a manner that allows it to move axially (in the X-axis direction). Figure 3 , Figure 4 Shaft 27 has a transmission gear 41, which is one of the transmission gear sets and serves as a power transmission path component 8, and is rotatably mounted on the frame or other structural components of the recording device 1 (not shown).

[0074] It should be noted that although the recording device 1 is an inkjet printer in this embodiment, it is obviously not limited to inkjet printers.

[0075] like Figure 4 and Figure 5 As shown, in this embodiment, the switching lever 10 has a pin 13 protruding toward the holding part 11.

[0076] like Figure 4 As shown in (B), the holding part 11 has a cam part 16 with a cam surface 15 on the circumferential trajectory 14. The power transmission part 7 is configured to switch between the power non-transmission state and the power transmission state by the pin 13 moving in one direction D on the circumferential trajectory 14 while in contact with the cam surface 15 of the cam part 16.

[0077] Furthermore, in this embodiment, the cam portion 16 of the holding portion 11 has a first cam position 17, a second cam position 18, a third cam position 19, and a fourth cam position 20 on the circumferential trajectory 14. And, as... Figure 2 As shown, the cam portion 16 is pushed by the retaining spring member 21 in a direction that maintains its contact with the pin 13. That is, the retaining portion 11 is provided in the structural member in a manner that allows it to move in the vertical direction (Z-axis direction), and is configured to be pushed upward (+Z direction) by the retaining spring member 21 to maintain its contact with the pin 13. Here, the retaining spring member 21 is a helical spring, and is provided as a cylindrical portion 12 that protrudes downward (-Z direction) around the lower part of the retaining portion 11.

[0078] In addition, such as Figure 4 As shown in (B), the cam portion 16 is configured such that the pin 13 can only move along the circumferential track 14 in the direction D, which is sequentially the first cam position 17, the second cam position 18, the third cam position 19, the fourth cam position 20, and then the first cam position 17. When moving along this circumferential track 14, the retaining portion 11 moves up and down by the spring force of the retaining portion and the spring member 21.

[0079] In addition, in this embodiment, the switching lever 10 receives power from the carriage 2 to move in the +X direction, while the pin 13 moves from the state of being engaged with the fourth cam position 20. Figure 5 ) shift to the state of being connected with the first cam position 17 ( Figure 4 Next, it transitions to the state of being connected to the second cam position 18.

[0080] After being switched to the position engaging with the second cam position 18, the pin 13 is configured such that, after being disengaged from the carriage 2, it returns to the fourth cam position 20 via the third cam position 19 by the spring force of the switching lever spring member 22 in the -X direction. The base end 28 of the switching lever spring member 22 is mounted to hook onto the structural member. Therefore, after the carriage 2 leaves the switching lever 10, the pin 13 returns to the fourth cam position 20 via the third cam position 19 as described above by the spring force of the switching lever spring member 22 in the -X direction.

[0081] In this embodiment, the pin 13 of the switching lever 10 is in contact with the first cam position 17 of the cam portion 16 of the holding portion 11. Figure 4 The power transmission non-transmission state is generated. This is configured such that the pin 13 of the switching lever 10 is engaged with the fourth cam position 20. Figure 5 The power transmission state is generated.

[0082] In addition, such as Figure 3 , Figures 4 to 7 As shown, in this embodiment, a rotation stop part 23 is provided. This rotation stop part 23 moves to a position that stops the rotation of the friction gear 9 in the non-power transmission state, and separates from this position in the power transmission state. The rotation stop part 23 is mounted on the shaft 27 in a manner that allows it to move integrally with the switching lever part 10. The rotation stop part 23 is mounted on the shaft 27 in a state that restricts rotation around the shaft, i.e., in a non-rotating state.

[0083] The rotation stop part 23 has a locking tooth 29. The locking tooth 29 moves integrally with the switching lever part 10 (in the X-axis direction) and engages with the friction gear 9 after reaching the position of the friction gear 9. Figure 4 The configuration is such that unwanted rotation of the friction gear 9 is stopped by engaging the non-rotating rotation stop part 23 with the friction gear 9.

[0084] In addition, such as Figure 3 , Figures 4 to 7 As shown, in this embodiment, the first rack portion 24 is disposed on the switching lever portion 10, and the second rack portion 25 is disposed on the rotation stop portion 23. A release gear 26 that meshes with the first rack portion 24 and the second rack portion 25 is disposed between them.

[0085] The gear 26 is disengaged so that it can rotate relative to the shaft 30. The shaft 30 is fixed to the aforementioned structural component.

[0086] like Figure 6 As shown, the switching lever 10 moves (in the +X direction) via the slide 2, and the pin 13 moves from the first cam position 17 ( Figure 6 (A) to the second cam position 18 ( Figure 6 When (B) moves, the release gear 26 rotates by the movement of the first rack portion 24 (in the +X direction). The rotation of the release gear 26 moves the second rack portion 25 in the opposite direction (in the -X direction) to the first rack portion 24. This is configured so that the rotation stop portion 23 separates from the position that stops the rotation of the friction gear 9 by moving in this opposite direction.

[0087] That is, to reiterate locally, the switching lever 10 is moved by the slide 2 against the spring force of the switching lever spring component 22, and the pin 13 moves from the first cam position 17. Figure 6 (A) to the second cam position 18 ( Figure 6 When (B) moves, the first rack portion 24 causes the release gear 26 to rotate by this movement (in the +X direction). In addition, by the rotation of the release gear 26, the second rack portion 25 moves in the opposite direction (in the -X direction) to the first rack portion 24, causing the rotation stop portion 23 to separate from the position that stops the rotation of the friction gear 9.

[0088] In addition, such as Figure 7 As shown, in this embodiment, when the switching lever 10 is freed from the power of the carriage 2, and the pin 13 moves from the second cam position 18 to the third cam position 19 (in the -X direction) by the spring force of the spring member 22 of the switching lever, the first rack portion 24 causes the release gear 26 to rotate in the opposite direction. By the rotation of the release gear 26, the second rack portion 25 moves in the opposite direction (in the +X direction), causing the rotation stop portion 23 to move to the position where the rotation of the friction gear 9 is stopped.

[0089] Furthermore, the configuration is such that when pin 13 moves from the third cam position 19 to the fourth cam position 20 (in the -X direction), the first rack portion 24 disengages from the release gear 26, and the second rack portion 25 is pushed by the switching lever portion 10, causing the rotation stop portion 23 to separate from the position that stops the rotation of the friction gear 9. Here, the first rack portion 24 is formed to be shorter than the second rack portion 25. Thus, when pin 13 moves from the third cam position 19 to the fourth cam position 20, the first rack portion 24 disengages from the release gear 26, and the second rack portion 25 is pushed by the switching lever portion 10.

[0090] In addition, such as Figures 8 to 10 As shown, in this embodiment, tapered cones 31 and 32 with narrow ends are formed on the side of the second rack portion 25. Furthermore, contact portions 34 and 35 are provided, which, depending on the position of the second rack portion 25, can be in a contact state where the cones 31 and 32 are in contact with the contact portions 34 and 35, and in a non-contact state where the cones 31 and 32 are not in contact with the contact portions 34 and 35.

[0091] The configuration is such that when pin 13 is in the first cam position 17, the cones 31 and 32 are in the non-contact state, and when pin 13 is in the fourth cam position 20, the cones 31 and 32 are in the contact state.

[0092] When pin 13 is in the first cam position 17, that is, when the rotation stop part 23 is in the position that stops the rotation of friction gear 9, if an external force is applied to the medium receiving tray 5, the rotational force will act on the friction gear 9 through the influence of this external force. This results in a lateral pressure being generated between the friction gear 9 and the locking teeth 29 of the rotation stop part 23, causing a displacement force that displaces the rotation stop part 23. Without the application of the external force, the cones 31 and 32 of the second rack part 25 are in a non-contact state with the contacted parts 34 and 35. Figure 8 However, when the external force is applied, there is a case where the rotation stop part 23 is displaced by the displacement force.

[0093] In this embodiment, even if the rotation stop part 23 is displaced by the external force, one of the cones 31 and 32 of the second rack part 25 will still come into contact with one of the contacted parts 34 and 35. Figure 9 (A) and stop. That is, the displacement above it is suppressed.

[0094] Furthermore, when the rotation stop part 23 is in the state of performing the displacement, the rotation stop part 23 is positioned relative to the position that stops the rotation of the friction gear 9. Figure 6 When (A) is separated, as described above, the spring force of the spring component 22 of the power support switching lever of the carriage 2 ( Figure 6 (B)). Thus, the rotation stop portion 23 separates from the friction gear 9 without being affected by the displacement. Then, the rotation stop portion 23 moves in the direction of separation, and the cones 31 and 32 of the second rack portion 25 stop at the position of contact with the contacted portions 34 and 35 (B). Figure 9 At (B)). Therefore, the displacement of the rotation stop part 23 is corrected. That is, when the rotation stop part 23 is moved subsequently ( Figure 7 (A) Figure 7 (B) Because the displacement was corrected, it became a state free from the influence of the lateral pressure. Figure 10 (A) Figure 10 (B)

[0095] The switching lever and retaining part switch between the power transmission non-transmission state and the power transmission state.

[0096] exist Figure 4 (A) Figure 6In the non-transmission state shown in (A), in the switching lever 10, its pin 13 is in the first cam position 17 and is pressed against the weir 54 of the holding part 11 by the spring force of the switching lever spring member 22 in the -X direction. That is, with the pin 13 pressed against the weir 54, the switching lever 10 is held in the first cam position 17.

[0097] If the slide 2 moves in the +X direction in this state and contacts the slide contact portion 40 of the switching lever portion 10 to push the switching lever portion 10, then the switching lever portion 10 will move, and the pin 13 will move from the first cam position 17 of the holding portion 11 to the second cam position 18.

[0098] During the movement, such as Figure 6 As shown in (B), the second rack portion 25 of the rotation stop portion 23 receives power from the carriage 2, that is, it receives the power through the first rack portion 24 and the release gear 26 to move in the -X direction. Thus, in addition to the spring force of the spring member 22 for the switching rod portion, the rotation stop portion 23 also receives power from the carriage 2 to move in the -X direction and move away from the position that stops the rotation of the friction gear 9.

[0099] Next, if the slide 2 is moved in the -X direction to move away from the switching lever 10, it will be as follows: Figure 7 As shown in (A), the switching lever 10 receives the spring force of the switching lever spring member 22 to move in the -X direction. At this time, the pin 13 moves from the second cam position 18 to the third cam position 19.

[0100] As a result, the first rack section 24 of the switching lever 10 moves in the -X direction. This movement disengages the gear 26 from rotating in the opposite direction, and the second rack section 25 moves in the +X direction. That is, the rotation stop section 23 moves to a position that stops the rotation of the friction gear 9.

[0101] Furthermore, such as Figure 7 As shown in (B), the switching lever 10 moves in the -X direction due to the spring force of the switching lever spring member 22. Pin 13 moves from the third cam position 19 to the fourth cam position 20. The rotation stop part 23 is pushed by the switching lever 10 to move in the -X direction and disengage from the friction gear 9. Simultaneously, the movable transmission gear 42 (described later) meshes with the friction gear 9 and enters a power transmission state. At this time, the idle rotation of gear 26 is released.

[0102] A movable transmission gear 42, which is movable in the X-axis direction, is provided on a shaft 27 on which the switching lever 10 is mounted. The movable transmission gear 42 rotates integrally with the shaft 27, but is configured to be movable axially.

[0103] In the power transmission state, the movable transmission gear 42 is engaged with the friction gear 9. Figure 5 , Figure 6 (A)). In the non-transmission state, the movable transmission gear 42 is in a state where it is not engaged with the friction gear 9. Figure 4 (A) Figure 7 (A)).

[0104] The movable transmission gear 42 is pressed towards the -X direction by the compression spring 43 to the partition 44 of the switching lever 10. The partition 44 is located between the rotation stop part 23 and the movable transmission gear 42. On the other hand, the rotation stop part 23 is pressed towards the partition 44 by another compression spring 45 in the +X direction.

[0105] That is, the movable transmission gear 42 and the rotation stop part 23 are always subjected to a force in the direction of contact with the separation part 44 of the switching lever part 10 by the spring force of the compression spring 43 and the compression spring 45.

[0106] Power transmission path from the motor to the media receiving tray

[0107] like Figures 1 to 3 As shown, rack 46 is formed on media receiving tray 5. A pinion 48 mounted on one end of tray drive shaft 47 meshes with rack 46. Gear 49 at the other end of tray drive shaft 47 meshes with gear 51, which rotates integrally with the shaft 50 of friction gear 9 located at the downstream end of power transmission path component 8. Friction gear 9 is pressed against flange 53 of shaft 50 by the spring force of compression spring 52.

[0108] It should be noted that the friction gear 9 rotates integrally with the shaft 50 by generating a frictional force between itself and the flange 53 of the shaft 50. When the friction gear 9 is engaged with the rotation stop part 23, when a force greater than the frictional force is applied, the friction gear 9 does not rotate against the frictional force, and only the shaft 50 rotates.

[0109] With the movable transmission gear 42 engaged with the friction gear 9, the power of the electric motor 6 is transmitted via the power transmission path component 8, causing the friction gear 9 to rotate. As the friction gear 9 rotates, it transmits the power of the electric motor 6 to the rack 46 via gears 51, 49, and 48. This causes the medium receiving tray 5 to move.

[0110] Correction of displacement of the conical part of the second rack and the contacted part relative to the rotation stop part.

[0111] like Figure 6 (A) Figure 8As shown, when the rotation stop part 23 is in the position that stops the rotation of the friction gear 9, once an external force is applied to the medium receiving tray 5, a lateral pressure will be generated between the friction gear 9 and the locking teeth 29 of the rotation stop part 23, and a displacement force that displaces the rotation stop part 23 will take effect. The rotation stop part 23 is displaced by this displacement force. Figure 9 Under (A) conditions, once the rotation stop part 23 is separated from the position that stops the rotation of the friction gear 9, the power of the carriage 2 will support the spring force of the spring member 22 of the switching lever. Figure 6 (B) Thus, the rotation stop part 23 separates from the friction gear 9 without being affected by the displacement.

[0112] The rotation stop part 23 moves in the direction of separation and stops at the position where the cones 31 and 32 of the second rack part 25 are in contact with the contacted parts 34 and 35. Figure 9 At (B)). Thus, the displacement of the rotation stop 23 is corrected. When the rotation stop 23 is subsequently moved, as... Figure 10 (A) Figure 10 As shown in (B), because the displacement is corrected, it is possible to move without the influence of the lateral pressure.

[0113] Explanation of the effects of the implementation method

[0114] (1) According to the recording device 1 of this embodiment, the switching lever 10 switches between the power non-transmission state and the power transmission state of the power transmission unit 7 by moving it under the power of the carriage 2. In addition, a holding part 11 is provided to hold the position of the switching lever 10. Therefore, since the switching lever 10 is held in this position by the holding part 11, each of the power non-transmission state and the power transmission state can be stably maintained.

[0115] (2) Furthermore, in this embodiment, the non-transmission state and the transmission state of the power transmission unit 7 are switched by the pin 13 moving in one direction D on the circumferential trajectory 14 while in contact with the cam surface 15 of the cam unit 16. Thus, the switching of the non-transmission state and the transmission state by the switching lever can be realized with a simple configuration.

[0116] (3) Furthermore, in this embodiment, the cam portion 16 is configured such that the pin 13 can only move along the circumferential trajectory 14 in the direction of the first cam position 17, the second cam position 18, the third cam position 19, the fourth cam position 20, and then the first cam position 17. Thus, with a simple configuration, the switching lever portion 10 can switch between the non-power transmission state and the power transmission state, and further maintain each state.

[0117] (4) In addition, in this embodiment, the switching of the switching lever 10 to the non-transmission state and the transmission state can be easily realized by the power of the slide 2 and the spring force of the spring component 22 of the switching lever, and the maintenance of each state can be further realized.

[0118] (5) Furthermore, in this embodiment, the switching lever 10 is configured such that the non-transmission state is generated when the pin 13 is in contact with the first cam position 17, and the transmission state is generated when the pin 13 is in contact with the fourth cam position 20. Thus, with a simple configuration, the switching lever 10 can switch between the non-transmission state and the transmission state and maintain each state.

[0119] (6) In addition, this embodiment includes a rotation stop unit 23, which moves to a position that stops the rotation of the friction gear 9 in the non-power transmission state, and separates from the position that stops the rotation of the friction gear 9 in the power transmission state. As a result, since the rotation stop unit 23 stops the rotation of the friction gear 9 in the non-power transmission state, the possibility of the medium receiving tray 5 moving unintentionally due to its own weight or other reasons can be reduced.

[0120] (7) Furthermore, in this embodiment, when the switching lever 10 is moved by the slide 2 and the pin 13 moves from the first cam position 17 to the second cam position 18, the first rack 24 rotates the release gear 26 by this movement. Additionally, the rotation of the release gear 26 causes the second rack 25 to move in the opposite direction to the first rack 24, separating the rotation stop 23 from the position where the friction gear 9 stops rotating. Therefore, even if the spring force of the switching lever spring member 22 is set relatively small, the power of the slide 2 can support the spring force of the switching lever spring member 22, increasing the certainty of separating the rotation stop 23 from the position where the friction gear 9 stops rotating.

[0121] (8) Furthermore, in this embodiment, when the pin 13 moves from the second cam position 18 to the third cam position 19, the first rack portion 24 causes the release gear 26 to rotate in the opposite direction. This rotation of the release gear 26 causes the second rack portion 25 to move in the opposite direction, moving the rotation stop portion 23 to a position where the rotation of the friction gear 9 is stopped. When the pin 13 moves from the third cam position 19 to the fourth cam position 20, the first rack portion 24 disengages from the release gear 26, while the second rack portion 25 is pushed by the switching lever portion 10, causing the rotation stop portion 23 to separate from the position where the rotation of the friction gear 9 is stopped. Therefore, even if the spring force of the spring member 22 of the switching lever portion is set relatively small, the power of the carriage 2 can support the spring force, increasing the certainty of separating the rotation stop portion 23 from the position where the rotation of the friction gear 9 is stopped.

[0122] (9) In addition, in this embodiment, even if the rotation stop part 23 is displaced by the external force applied to the medium receiving tray 5, it will stop because one of the cones 31 and 32 of the second rack part 25 comes into contact with one of the contacted parts 34 and 35, so the above displacement can be suppressed.

[0123] Furthermore, when the rotation stop part 23 is separated from the position that stops the rotation of the friction gear 9 while the displacement has been performed, the rotation stop part 23 can be separated from the friction gear 9 without being affected by the displacement because of the spring force of the spring member 22 of the power support switching lever of the slide 2. Additionally, the rotation stop part 23 moves in the direction of separation, and both cones 31 and 32 of the second rack part 25 stop at the position where they contact the contacted parts 34 and 35. Thus, the displacement of the rotation stop part is corrected. Therefore, when the rotation stop part 23 is subsequently moved, it can be done without the influence of the lateral pressure.

[0124] In summary, by using a simple configuration that only involves the movement of the carriage to switch between the driven and non-driven paper trays, and after the carriage leaves the switching unit and goes to a predetermined position, the media receiving tray 5 can be made to take on a first state and a second state. In the second state, compared to the first state, the media receiving tray 5 is displaced in the discharge direction F of the media P.

[0125] Implementation Method 2

[0126] Next, based on Figures 11 to 15 The recording device involved in Embodiment 2 will be described, and the same symbols will be used for the parts that are the same as those in Embodiment 1, and their descriptions will be omitted.

[0127] like Figure 11 and Figure 12As shown, the recording device 61 according to this embodiment includes: a recording head 3, mounted on a reciprocating slide 2 and recording on a medium P; a discharge roller 4, discharging the recorded medium P; and a medium receiving tray 5, receiving the medium discharged by the discharge roller 4, and capable of taking a first state and a second state, wherein in the second state, the medium receiving tray 5 is displaced in the discharge direction F of the medium P compared to the first state.

[0128] Furthermore, the recording device 61 includes: an electric motor 6, which is the power source for the discharge roller 4; and a power transmission unit 67, which is capable of adopting a power transmission state and a power non-transmission state, and includes a friction gear 9 as a power transmission path component 68. In the power transmission state, the power transmission unit 67 transmits the power of the electric motor 6 from the electric motor 6 to the medium receiving tray 5. In the power non-transmission state, the power transmission unit 67 does not transmit the power of the electric motor 6 from the electric motor 6 to the medium receiving tray 5. It also includes: a switching lever 60, which switches the power non-transmission state and the power transmission state of the power transmission unit 67 by moving it with the power of the carriage 2; and a transmission direction switching unit 62, which switches the power non-transmission state and the power transmission state of the power transmission unit 67 by moving the carriage 2 in one direction.

[0129] In addition, the transmission direction switching unit 62 is positioned upstream of the friction gear 9, which serves as the power transmission path component 68, in the power transmission direction.

[0130] The switching lever 60 is mounted on the shaft 27 in a manner that allows it to move axially (in the X-axis direction). Similar to Embodiment 1, the shaft 27 has a transmission gear 41, which is part of a transmission gear set and serves as a power transmission path component 68, and is rotatably mounted on a frame or other structural component of the recording device 61 (not shown). The drive gear 66, described later, is mounted on the shaft 27 in a manner that allows it to move in the X-axis direction. The drive gear 66 is configured to rotate integrally with the shaft 27.

[0131] The power transmission state that transmits power to the friction gear 9 is switched by means of the transmission direction switching unit 62, depending on the position of the drive gear 66.

[0132] like Figure 11 As shown, the power of the electric motor 6 is transmitted to the transmission gear 41 via the transmission gear set of the power transmission path component 68, causing the shaft 27 to rotate. While the shaft 27 is rotating in one direction, the rotation direction of the friction gear 9 is switched by changing the position of the drive gear 66.

[0133] The power transmission structure from the friction gear 9 to the rack 46 of the medium receiving tray 5 is the same as in Embodiment 1. Furthermore, the power transmission structure from the motor 6 to the transmission gear 41 can be any structure where the power of the motor 6 is transmitted to the transmission gear 41, and is essentially almost identical to Embodiment 1. Obviously, it can also be different.

[0134] In addition, such as Figure 13 As shown, in this embodiment, the transmission direction switching unit 62 is a compound gear 65 having a first gear 63 and a second gear 64. The compound gear 65 is configured such that the second gear 64 always meshes with the friction gear 9.

[0135] Here, the first gear 63 is composed of a large gear with a large diameter, while the second gear 64 is composed of a small gear with a smaller diameter than the first gear 63.

[0136] In addition, such as Figure 12 , Figure 14 and Figure 15 As shown, the drive gear 66 that transmits power to the motor 6 moves in the X-axis direction by moving the switching lever 60.

[0137] The configuration is such that it can take action based on the position of the drive gear 66. Figure 12 The power transmission non-transmission state and the power transmission open state shown are illustrated. Figure 14 ) and the power transmission off state ( Figure 15 In the open power transmission state, the media receiving tray 5 is moved from the first state to the second state, and in the closed power transmission state, the media receiving tray 5 is moved from the second state to the first state.

[0138] In addition, such as Figure 12 , Figure 14 and Figure 15 As shown, in this embodiment, the switching lever 60 is pushed by a first spring 71 and a second spring 72 located on both sides in the moving direction (X-axis direction). Both the first spring 71 and the second spring 72 are composed of compressed helical springs. The drive gear 66 is located between the switching lever 60 and the second spring 72 and is pressed against the switching lever 60 by the second spring 72.

[0139] Furthermore, the spring force of the first spring 71 is set to be greater than that of the second spring 72. This configuration ensures that when the switching lever 60 is no longer powered by the carriage 2, the switching lever 60 is in a position where power transmission is not required. Figure 12 ).

[0140] In addition, such as Figure 12 , Figure 14 and Figure 15As shown, in this embodiment, the rotation stop part 23 is configured to move between the first spring 71 and the switching lever part 60. The rotation stop part 23 can move axially (in the X-axis direction) on the shaft 27, but it can also be mounted on the shaft 27 without rotating about the shaft.

[0141] The rotation stop part 23 is pressed against the switching lever part 60 by the first spring 71. In the non-power transmission state, the rotation stop part 23 moves to a position that meshes with the first gear 63 of the compound gear 65, and in the power transmission state, it moves to a position that does not mesh with the first gear 63. That is, in the power transmission state, it moves to a position that does not mesh with other gears.

[0142] In addition, such as Figure 12 As shown, in this embodiment, the switching lever 60, while being pushed from both sides of the moving direction (X-axis direction) by the first spring 71 and the second spring 72, receives power from the carriage 2 and can move on the shaft 27, and can rotate around the shaft. That is, when the shaft 27 rotates, the switching lever 60 will rotate as a whole due to friction.

[0143] Although the switching lever 60 will rotate as a whole due to friction when the shaft 27 rotates, if it is restricted by a force greater than the friction, the shaft 27 will resist the friction and the rotation of the switching lever 60 will stop.

[0144] When in the non-power transmission state, the switching lever 60 is in the position as if passing through Figure 12 The dotted line indicates the inclined position. In other words, in the non-power transmission state, the sliding contact portion 40 of the switching lever 60 retracts from the range of movement of the sliding carriage 2.

[0145] When transitioning from a non-power-transmitting state to a power-transmitting state, shaft 27 is rotated to change the switching lever 60 from an inclined position (dashed line) to... Figure 12 The upright position (solid line). The switching lever 60 is configured to rotate integrally with the shaft 27 from the inclined position and stop at the upright position by abutting against the limiting part (not shown).

[0146] Although there is some repetition, further specific explanation is required.

[0147] By switching lever 60, one can take... Figure 12 The tilted position (dashed line) and the upright position (solid line) allow the carriage contact portion 40 of the switching lever 60 to be configured to a range of movement, for example, for recognizing its own position other than when recording an action, and the range of movement when the carriage 2 moves to a position outside the range when the action is recorded.

[0148] In the open power transmission state transferred to the medium receiving tray 5 ( Figure 14 ) or the power transmission off state ( Figure 15 When the switching lever 60 is in the upright state, the movable carriage 2 is in contact with the carriage contact part 40.

[0149] On the other hand, when the carriage 2 performs the self-position re-identification action, the switching lever 60 is rotated together by rotating the shaft 27 in the opposite direction, so that the carriage is changed from the upright state to the tilted state to the state of retreat, and the carriage contact part 40 is not in contact with the carriage 2.

[0150] Switching between power transmission off state, power transmission on state, and power transmission off state.

[0151] like Figure 12 As shown, by rotating shaft 27, the switching lever 60, which is in a non-power transmission state and in an inclined state (dashed line), becomes an upright state (solid line). Next, the carriage 2 is moved in the +X direction to contact the carriage contact portion 40 of the switching lever 60, thus pushing the switching lever 60 to move in the +X direction.

[0152] When transitioning to the open power transmission state, the carriage 2 is moved to... Figure 14 At the position where the rotation stop part 23 moves to a position where it is not engaged with the first gear 63 of the compound gear 65, the drive gear 66 stops the movement of the carriage 2 at the position where it is engaged with the first gear 63. In this state, the rotation of the shaft 27 is transmitted from the drive gear 66 to the first gear 63 of the compound gear 65, and from the integrally rotating second gear 64 to the friction gear 9.

[0153] Then, the transmission is transmitted to the rack 46 of the media receiving tray 5 via gears 51, 49, and 48, causing the media receiving tray 5 to move in the +Y direction. That is, the media receiving tray 5 moves towards the position to receive the media P discharged from the storage position inside the recording device 61.

[0154] During the transition to the power transmission off state, the carriage 2 is moved to... Figure 15 The position is such that the rotation stop part 23 moves to a position where it is not engaged with the first gear 63 of the compound gear 65, and the drive gear 66 stops the carriage 2 at the position where it is engaged with the friction gear 9. In this state, the rotation of the shaft 27 is directly transmitted from the drive gear 66 to the friction gear 9. In this state, since no power is transmitted from the drive gear 66 to the compound gear 65, the compound gear 65 is in an idle state. Because the rotation of the drive gear 66 is transmitted directly to the friction gear 9 without the aid of the compound gear 65, the rotation direction of the friction gear 9 becomes the opposite direction to that in the open power transmission state.

[0155] Then, the transmission is transmitted to the rack 46 of the media receiving tray 5 via gears 51, 49, and 48, causing the media receiving tray 5 to move in the -Y direction. That is, the media receiving tray 5 is moved to return to its storage position within the recording device 61.

[0156] The switching between the power non-transmission state, the power transmission on state, and the power transmission off state is performed by the control unit (not shown) of the recording device 61. That is, the control unit performs the following (1) to (4).

[0157] (1) The control unit rotates the shaft 27 to move the switching lever 60 from the retracted state. Figure 12 The dashed line is set to an upright state. Figure 12 (solid line).

[0158] (2) Next, the switch 60 of the upright state is pushed by the slide 2 to move it to the position of the open power transmission state or the position of the closed power transmission state.

[0159] (3) Then, while the switching lever 60 is being pushed by the slide 2, the action of opening the power transmission state or the action of closing the power transmission state is performed.

[0160] (4) Next, the slide 2 is moved away from the switching lever 60, and the shaft 27 is rotated in the opposite direction so that the switching lever 60 returns to the retracted state.

[0161] Explanation of the effects of the implementation method

[0162] (1) According to the recording device 61 of this embodiment, the non-transmission state and the transmission state are switched by the switching lever 60 receiving power from the carriage 2 for movement. Furthermore, a transmission direction switching unit 62 is provided, which switches the non-transmission state and the transmission state by moving the carriage 2 in one direction (+X-axis direction). The transmission direction switching unit 62 is located upstream of the friction gear 9, which serves as the power transmission path member 68, in the power transmission direction. Thus, with a simple configuration where only the carriage 2 moves in one direction, the non-transmission state and the transmission state can be switched, allowing the media receiving tray 5 to be in a first state and a second state. In the second state, compared to the first state, the media receiving tray 5 is displaced in the discharge direction F of the media P. Additionally, the switching time can be shortened.

[0163] (2) In addition, in this embodiment, the transmission direction switching unit 62 is a compound gear 65 having a first gear 63 and a second gear 64, the second gear 64 always meshing with the friction gear 9. Furthermore, it is configured such that, by moving the switching lever 60, the drive gear 66 that transmits the power of the motor 6 moves, and the power transmission state can be opened by moving the medium receiving tray 5 from the first state to the second state, depending on the position of the drive gear 66. Figure 14 ), and the power transmission off state (Figure 15) that moves the media receiving tray 5 from the second state to the first state.

[0164] Therefore, the simple configuration of the compound gear 65 enables the power transmission switching unit 62 to switch between the power non-transmission state and the power transmission state. Furthermore, the power non-transmission state, the power transmission open state, and the power transmission closed state can be easily achieved based on the position of the drive gear 66.

[0165] (3) In addition, in this embodiment, the switching lever 60 is pushed by a first spring 71 and a second spring 72 located on both sides in the moving direction (X-axis direction). Furthermore, the spring force of the first spring 71 is greater than the spring force of the second spring 72. Thus, once the switching lever 60 is freed from the power of the carriage 2, it can automatically return to the position where the power transmission is not transmitted by the spring force of the first spring 71.

[0166] Furthermore, since the drive gear 66 meshes with other gears via the first spring 71 and the second spring 72, it will mesh after rotating half a tooth even in the event of tooth collision, so there is no need to re-attempt meshing, thus shortening the time.

[0167] (4) Furthermore, in this embodiment, the rotation stop part 23 is configured to move between the first spring 71 and the switching lever part 60. Additionally, the rotation stop part 23 is pressed against the switching lever part 60 by the first spring 71, and moves to a position where it engages with the first gear 63 of the compound gear 65 in the non-power transmission state, and moves to a position where it does not engage with the first gear 63 in the power transmission state. Therefore, because the rotation stop part 23 moves to the position where it engages with the first gear 63 of the compound gear 65 in the non-power transmission state to stop the rotation of the compound gear 65, the possibility of the media receiving tray 5 unintentionally moving due to its own weight or other reasons can be reduced.

[0168] (5) Furthermore, in this embodiment, the switching lever 60 can rotate around the axis 27, and the axis 27 rotates as a whole due to friction. As a result, the carriage contact portion 40 of the switching lever 60, which is pushed by the carriage 2, can be positioned within the operating range of the carriage 2. Therefore, it is possible to prevent the recording device 61 from becoming too large in the width direction.

[0169] Specifically, the carriage contact portion 40 can be configured to a range of movement, for example, a range of movement when the carriage 2 moves outside the range during the recording operation in order to re-identify its own position other than during the recording operation. When performing the operation of opening the power transmission state or closing the power transmission state of the media receiving tray 5, the switching lever portion 60 is set to an upright state so that the carriage 2 is in contact with the carriage contact portion 40 while moving.

[0170] On the other hand, when the carriage 2 performs the self-position re-identification action, the switching lever 60 is rotated together by rotating the shaft 27 in the opposite direction, so that the carriage is changed from the upright state to the tilted state to the state of retreat, and the carriage contact part 40 is not in contact with the carriage 2.

[0171] Other implementation methods

[0172] The automatic opening mechanism and printing device for opening and closing the lid involved in this invention basically have the configuration of the embodiments described above, and obviously, some configuration changes or omissions can be made without departing from the spirit of the invention.

[0173] The invention can be applied to items that can be manually operated, such as paper supports, which are different from media receiving trays.

Claims

1. A recording device, characterized in that, have: A recording head, mounted on a reciprocating carriage, records onto a medium; The discharge roller discharges the medium after recording. The medium receiving tray receives the medium discharged by the discharge roller and is capable of taking on a first state and a second state, in which the medium receiving tray is displaced in the discharge direction of the medium compared to the first state; The electric motor is the power source for the discharge roller; The power transmission unit is capable of adopting a power transmission state and a power non-transmission state, and includes a friction gear as a power transmission path component. In the power transmission state, the power transmission unit transmits the power of the motor from the motor to the medium receiving tray. In the power non-transmission state, the power transmission unit does not transmit the power of the motor from the motor to the medium receiving tray. The switching lever is used to switch between the non-transmission state and the transmission state by moving the carriage. as well as The retaining part maintains the position of the switching lever. The switching lever has a pin protruding toward the retaining part. The retaining part includes a cam part. The non-transmission state and the transmission state of the power transmission unit are switched by the pin moving in one direction in the cam unit.

2. The recording device according to claim 1, characterized in that, The cam portion has a first cam position, a second cam position, a third cam position, and a fourth cam position on its circumferential trajectory. The cam portion is pushed by a spring component of the retaining portion in a direction that maintains the cam portion in contact with the pin. The cam portion is configured such that the pin can only move along the circumferential trajectory in the direction of the first cam position, the second cam position, the third cam position, the fourth cam position, and the first cam position.

3. The recording device according to claim 2, characterized in that, The switching lever receives power from the carriage to move, causing the pin to move from a state engaged with the fourth cam to a state engaged with the first cam, and then with the second cam. After being switched to the position of the second cam, when the switching lever is disengaged from the carriage, the pin will return to the fourth cam position via the spring force of the spring component of the switching lever.

4. The recording device according to claim 3, characterized in that, The state in which the pin of the switching lever is in contact with the first cam position generates the power non-transmission state, and the state in which the pin is in contact with the fourth cam position generates the power transmission state.

5. The recording apparatus according to any one of claims 2 to 4, characterized in that, The recording device includes a rotation stop unit, which moves to a position that stops the rotation of the friction gear in the non-power transmission state, and separates from the position that stops the rotation of the friction gear in the power transmission state.

6. The recording device according to claim 5, characterized in that, The recording device includes: The first rack portion is disposed on the switching lever portion; The second rack portion is disposed at the rotation stop portion; and Disengage the gear and allow it to mesh with the first and second rack sections. When the switching lever is moved by the slide and the pin moves from the first cam position to the second cam position, the release gear is rotated by the movement of the first rack. The rotation of the release gear causes the second rack to move in the opposite direction to the first rack, thereby separating the rotation stop part from the position that stops the rotation of the friction gear.

7. The recording device according to claim 6, characterized in that, When the switching lever is disengaged from the carriage and the pin moves from the second cam position to the third cam position, The first rack portion rotates the release gear in the opposite direction. The rotation of the release gear causes the second rack portion to move in the opposite direction, thereby moving the rotation-stopping portion towards a position that stops the rotation of the friction gear. When the pin moves from the third cam position to the fourth cam position, the first rack part disengages from the release gear, and the second rack part is pushed by the switching rod part to move, causing the rotation stop part to separate from the position that stops the rotation of the friction gear.

8. The recording device according to claim 7, characterized in that, The recording device includes: A tapered, pointed object is formed on the side of the second rack portion; and The contacted part, depending on the position of the second rack part, adopts a contact state where the cone is in contact with the contacted part and a non-contact state where the cone is not in contact with the contacted part. When the pin is in the first cam position, the cone is in the non-contact state; when the pin is in the fourth cam position, the cone is in the contact state.

9. A recording device, characterized in that, have: A recording head, mounted on a reciprocating carriage, records onto a medium; The discharge roller discharges the medium after recording. The medium receiving tray receives the medium discharged by the discharge roller and is capable of taking on a first state and a second state, in which the medium receiving tray is displaced in the discharge direction of the medium compared to the first state; The electric motor is the power source for the discharge roller; The power transmission unit is capable of adopting a power transmission state and a power non-transmission state, and includes a friction gear as a power transmission path component. In the power transmission state, the power transmission unit transmits the power of the motor from the motor to the medium receiving tray. In the power non-transmission state, the power transmission unit does not transmit the power of the motor from the motor to the medium receiving tray. The switching lever is used to switch between the non-transmission state and the transmission state by moving the carriage. as well as The transmission direction switching unit switches between the non-transmission state and the transmission state of the power transmission unit by moving the carriage in one direction. The transmission direction switching unit is located upstream of the friction gear, which serves as the power transmission path component, in the power transmission direction.

10. The recording device according to claim 9, characterized in that, The transmission direction switching unit is a compound gear having a first gear as a large gear and a second gear as a small gear, and the second gear is always engaged with the friction gear. The drive gear that transmits the power of the motor moves by moving the switching lever, and can take the following states depending on the position of the drive gear: a non-transmission state, an open transmission state that moves the medium receiving tray from the first state to the second state, and a closed transmission state that moves the medium receiving tray from the second state to the first state.

11. The recording apparatus according to claim 10, characterized in that, The switching lever is pushed by a first spring and a second spring located on both sides of the direction of movement. The drive gear is located between the switching lever and the second spring and is pressed against the switching lever by the second spring. The spring force of the first spring is greater than that of the second spring.

12. The recording apparatus according to claim 11, characterized in that, The rotation stop is configured to move between the first spring and the switching lever. The rotation stop part is pressed against the switching lever by the first spring. In the non-power transmission state, the rotation stop part moves to a position that meshes with the first gear of the compound gear, and in the power transmission state, it moves to a position that does not mesh with the first gear.

13. The recording apparatus according to claim 11 or 12, characterized in that, The switching lever, while being pushed by the first and second springs from both sides of the direction of movement, receives power from the carriage and is able to move along the axis and rotate about the axis. When the shaft rotates, the switching lever will rotate as a whole due to friction.

14. A control method for a recording device, characterized in that, The control method of the recording device according to claim 13, wherein the control method performs the following control: Rotate the shaft to move the switching lever from a retracted state to an upright state; The switching lever in the upright state is pushed by the slide to move the switching lever in the upright state to a position that is either in the open power transmission state or in the closed power transmission state to perform various actions; as well as With the carriage away from the switching lever, the axis is rotated in the opposite direction to return the switching lever to the retracted state.

Images