Recording device, control program for recording device, control method for recording device

Abstract

This suppresses failures in switching power transmission. [Solution] The control unit of the recording device is capable of executing a correction mode for correcting the reference travel amount M of the carriage for moving the switching unit from a first position to a second position. The correction mode includes a power switching step in which the carriage is moved based on the reference travel amount M; a retry step in which, if the power transmission unit does not switch from a non-power transmission state to a power transmission state as a result of the power switching step, the amount obtained by subtracting an adjustment amount ma from the reference travel amount M is used as the adjusted reference travel amount M and the power switching step is performed again; and a reference travel amount correction step in which, if the power transmission unit switches from a non-power transmission state to a power transmission state as a result of the retry step, the amount obtained by subtracting an adjustment amount mc from the adjusted reference travel amount M is retained as the new reference travel amount M.

Description

Technical Field

[0001] The present invention relates to a recording apparatus that records on a medium. The present invention also relates to a control program for the recording apparatus. The present invention further relates to a control method for the recording apparatus.

Background Art

[0002] Patent Document 1 discloses a recording apparatus provided with a power transmission unit that switches the power transmission from a motor to a medium receiving tray. The power transmission unit can take a power transmission state in which power is transmitted and a power non-transmission state in which power is not transmitted. The power transmission unit switches its state by the operation of a carriage on which a recording head is mounted. The power transmission unit also includes a cam having a cam surface and a pin disposed on the cam surface. The cam surface is provided with a flat surface portion where the pin is located when in the power non-transmission state, and a pin holding portion that holds the pin when the power transmission unit is in the power transmission state. When switching the power transmission unit from the power non-transmission state to the power transmission state and maintaining the power transmission state, the carriage is moved by a predetermined amount to move the pin from the flat surface portion to the pin holding portion. When the pin is held by the pin holding portion, the power transmission state is maintained even when the carriage moves away from the power transmission unit.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The pin moves from the flat surface portion to the pin holding portion by the movement of the carriage. However, due to component tolerances, assembly errors, etc., the pin may not be positioned in the pin holding portion, resulting in a failure to switch the power transmission.

Means for Solving the Problems

[0005] To solve the above problems, the present invention provides a recording device comprising: a power source; a power transmission unit that can switch between a power transmission state in which the power of the power source is transmitted to a driven unit and a power non-transmission state in which the power is not transmitted to the driven unit; a recording unit that records on a medium, and a carriage that can move in a first direction intersecting the transport direction of the medium and in a second direction opposite to the first direction; and a control unit that controls the operation of the carriage, wherein the power transmission unit comprises a switching unit that switches from the power non-transmission state to the power transmission state by moving from a first position to a second position in the first direction relative to the first position as the carriage moves in the first direction, and a cam mechanism that holds the switching unit in the second position, wherein the cam mechanism comprises a cam having a cam surface and a cam contact portion that moves integrally with the switching unit and moves while in contact with the cam surface, wherein the cam surface comprises a first cam surface that the cam contact portion contacts when the switching unit is in the first position, and when the switching unit is in the second position The control unit is capable of executing a correction mode for correcting the reference travel amount M of the carriage for moving the switching unit from a first position to a second position, wherein the correction mode includes: a power switching step for moving the carriage based on the reference travel amount M; a retry step for performing the power switching step if the power transmission unit does not switch from the non-power transmission state to the power transmission state as a result of the power switching step, where the amount obtained by subtracting an adjustment amount ma from the reference travel amount M is the adjusted reference travel amount M; and a reference travel amount correction step for maintaining the amount obtained by subtracting an adjustment amount mc from the adjusted reference travel amount M as the new reference travel amount M if the power transmission unit switches from the non-power transmission state to the power transmission state as a result of the retry step.

[0006] The present invention also relates to a control program for a recording device, wherein the recording device comprises a power source, a power transmission unit that can switch between a power transmission state in which the power of the power source is transmitted to a driven unit and a power non-transmission state in which the power is not transmitted to the driven unit, a recording unit that records on a medium, a carriage that can move in a first direction intersecting the transport direction of the medium and in a second direction opposite to the first direction, and a control unit that controls the operation of the carriage, wherein the power transmission unit comprises a switching unit that switches from the power non-transmission state to the power transmission state by moving from a first position to a second position in the first direction relative to the first position as the carriage moves in the first direction, and a cam mechanism that holds the switching unit in the second position, wherein the cam mechanism comprises a cam having a cam surface, and a cam contact portion that moves integrally with the switching unit and moves while in contact with the cam surface, wherein the cam surface comprises a first cam surface that the cam contact portion contacts when the switching unit is in the first position, and a cam contact portion that moves so as to when the switching unit is in the second position The control program comprises a second cam surface that holds the cam contact portion, and a guide path that guides the cam contact portion to the first cam surface when the cam contact portion moves away from the second cam surface in the first direction, wherein the control program causes the computer to execute a correction mode for correcting the reference travel amount M of the carriage for moving the switching unit from a first position to a second position, and the correction mode is characterized by causing the computer to execute a power switching step that moves the carriage based on the reference travel amount M, a retry step in which, if the power transmission unit does not switch from the non-power transmission state to the power transmission state as a result of the power switching step, the amount obtained by subtracting an adjustment amount ma from the reference travel amount M is used as the adjusted reference travel amount M and the power switching step is performed again, and a reference travel amount correction step in which, if the power transmission unit switches from the non-power transmission state to the power transmission state as a result of the retry step, the amount obtained by subtracting an adjustment amount mc from the adjusted reference travel amount M is used as the new reference travel amount M.

[0007] The present invention also relates to a control method for a recording device, the recording device comprising: a power source; a power transmission unit that can switch between a power transmission state in which the power of the power source is transmitted to a driven unit and a power non-transmission state in which the power is not transmitted to the driven unit; a recording unit that records on a medium, and a carriage that can move in a first direction intersecting the transport direction of the medium and in a second direction opposite to the first direction; and a control unit that controls the operation of the carriage, the power transmission unit comprising: a switching unit that switches from the power non-transmission state to the power transmission state by moving from a first position to a second position in the first direction relative to the first position as the carriage moves in the first direction; and a cam mechanism that holds the switching unit in the second position, the cam mechanism comprising: a cam having a cam surface; and a cam contact portion that moves integrally with the switching unit and moves while in contact with the cam surface, the cam surface comprising: a first cam surface that the cam contact portion contacts when the switching unit is in the first position; and the switching unit The control method comprises a second cam surface that holds the cam contact portion so as to be located in a second position, and a guide path that guides the cam contact portion to the first cam surface when the cam contact portion moves away from the second cam surface in the first direction, wherein the control method includes a correction mode for correcting the reference movement amount M of the carriage for moving the switching unit from a first position to a second position, the correction mode includes a power switching step of moving the carriage based on the reference movement amount M, a retry step of performing the power switching step if the power transmission unit does not switch from the non-power transmission state to the power transmission state as a result of the power switching step, and a reference movement amount correction step of holding the amount obtained by subtracting the adjustment amount mc from the adjusted reference movement amount M as a new reference movement amount M if the power transmission unit switches from the non-power transmission state to the power transmission state as a result of the retry step. [Brief explanation of the drawing]

[0008] [Figure 1] A schematic diagram of the recording device according to Embodiment 1 of the present invention. [Figure 2]Figure 1 is a side cross-sectional view showing the internal configuration of the recording device, with a portion of it enlarged. [Figure 3A] A plan view cross-sectional diagram showing the internal configuration of the recording device in Figure 1. [Figure 3B] A perspective view of the cam shown in part A of Figure 3A. [Figure 3C] A cross-sectional perspective view of the cam shown in section A of Figure 3A. [Figure 4] Figure 1 is a plan cross-sectional view showing the area around the power transmission section of the recording device. [Figure 5] Figure 1 is a plan cross-sectional view showing the area around the power transmission section of the recording device, with the motor omitted. [Figure 6] Figure 1 is a side cross-sectional view showing the area around the power transmission section of the recording device. [Figure 7] Figure 1 is a perspective view showing the power transmission section and motor of the recording device. [Figure 8] Figure 1 is a perspective view showing the power transmission unit and carriage of the recording device, representing the state in which the carriage is on the power transmission unit side within the reciprocating movement range and the switching lever unit is in a non-contact position. [Figure 9] Figure 1 is a perspective view showing the power transmission unit, carriage, and media tray of the recording device, representing the state in which the carriage is on the power transmission unit side within its reciprocating movement range and the switching lever is in contact position. [Figure 10] Figure 1 is a perspective view showing the power transmission unit, carriage, and media receiving tray of the recording device, and represents the state in which the carriage is in the home position opposite to the power transmission unit within the reciprocating movement range. [Figure 11] Figure 1 is a perspective view of the power transmission section of the recording device, showing the switching lever in the contact position. [Figure 12] This is a perspective view of the power transmission section of the recording device shown in Figure 1, viewed from a different angle than Figure 11, and represents the state in which the switching lever is in the non-contact position. [Figure 13] Figure 1 is a perspective view showing the transition of the switching lever of the recording device from the non-contact position to the contact position. [Figure 14]Perspective view showing the state where the switching lever part of the recording apparatus in FIG. 1 transitions from a non-contact position to a contact position and further shows the sliding of the switching lever part. [Figure 15] Front sectional view showing the state where the switching lever part of the recording apparatus in FIG. 1 transitions from a non-contact position to a contact position and further shows the sliding of the switching lever part. [Figure 16] Perspective sectional view showing the state where the switching lever part of the recording apparatus in FIG. 1 transitions from a non-contact position to a contact position and further shows the sliding of the switching lever part. [Figure 17] Perspective view showing the periphery of the locking part and transmission part of the power transmission part of the recording apparatus in FIG. 1. [Figure 18] Perspective view showing the periphery of the locking part and transmission part of the power transmission part of the recording apparatus in FIG. 1 as seen from an angle different from FIG. 17. [Figure 19] Perspective view showing the periphery of the locking part and transmission part of the power transmission part of the recording apparatus in FIG. 1 as seen from an angle different from FIGS. 17 and 18. [Figure 20] Perspective sectional view of the power transmission part of the recording apparatus in FIG. 1 showing the state where the switching lever part is in the contact position. [Figure 21] Block diagram showing the control system of the recording apparatus. [Figure 22] Flowchart showing the flow of processing when displacing the media receiving tray. [Figure 23] Diagram showing the position and movement amount of the carriage with respect to the cam. [Figure 24] Diagram showing the position of the pin in the cam. [Figure 25] Diagram showing the position of the pin in the cam. [Figure 26A] Flowchart showing the flow of control in the correction mode. [Figure 26B] Flowchart showing the flow of control in the correction mode. [Figure 27] Perspective view of the base frame and carriage guide frame showing the state before fixing both frames. [Figure 28]A perspective view of the base frame and carriage guide frame, showing the state after both frames have been fixed in place. [Modes for carrying out the invention]

[0009] The present invention will be described in general terms below. A recording device according to the first embodiment includes a power source, a power transmission unit that can switch between a power transmission state in which the power of the power source is transmitted to a driven unit and a power non-transmission state in which the power is not transmitted to the driven unit, a recording unit that records on a medium, a carriage that can move in a first direction intersecting the transport direction of the medium and in a second direction opposite to the first direction, and a control unit that controls the operation of the carriage, the power transmission unit includes a switching unit that switches from the power non-transmission state to the power transmission state by moving from a first position to a second position in the first direction relative to the first position as the carriage moves in the first direction, and a cam mechanism that holds the switching unit in the second position, the cam mechanism includes a cam having a cam surface, and a cam contact portion that moves integrally with the switching unit and moves while in contact with the cam surface, the cam surface includes a first cam surface that the cam contact portion contacts when the switching unit is in the first position, and when the switching unit is in the second position The device comprises a second cam surface that holds the cam contact portion, and a guide path that guides the cam contact portion to the first cam surface when the cam contact portion moves away from the second cam surface in the first direction, wherein the control unit is capable of executing a correction mode for correcting the reference movement amount M of the carriage for moving the switching unit from a first position to a second position, and the correction mode includes a power switching step of moving the carriage based on the reference movement amount M, a retry step of performing the power switching step with the adjusted reference movement amount M if the power transmission unit does not switch from the non-power transmission state to the power transmission state as a result of the power switching step, and a reference movement amount correction step of holding the adjusted reference movement amount M with the adjusted reference movement amount mc as a new reference movement amount M if the power transmission unit switches from the non-power transmission state to the power transmission state as a result of the retry step.

[0010] If, as a result of moving the carriage based on the reference displacement M, the power transmission unit does not switch from the non-power transmission state to the power transmission state, that is, if the power transmission switching fails, it is possible that the cam contact portion has moved too far in the first direction beyond the second cam surface and entered the guide path. According to this embodiment, the correction mode reduces the reference travel amount M of the carriage for moving the switching unit from the first position to the second position, thereby suppressing failures in switching power transmission. Furthermore, if the power transmission unit switches from the non-power transmission state to the power transmission state as a result of the retry step, the cam contact portion may be located on the second cam surface but in a position where it could potentially enter the guide path, i.e., an unstable position. In such a case, there is a high probability that the power transmission switching will eventually fail. However, according to this embodiment, when the power transmission unit switches from the non-power transmission state to the power transmission state as a result of the retry step, the amount obtained by subtracting the adjustment amount mc from the adjusted reference movement amount M is held as the new reference movement amount M, thereby allowing the cam contact portion to move to a stable position on the second cam surface. As a result, failures in switching power transmission can be suppressed.

[0011] The second embodiment is an embodiment dependent on the first embodiment, wherein the correction mode includes an adjustment step in which, if the power transmission unit switches from the non-power transmission state to the power transmission state as a result of the first power switching step, the adjustment amount obtained by adding an adjustment amount mb to the reference movement amount M is used as the adjusted reference movement amount M, and the control unit, in the correction mode, proceeds to the retry step if, as a result of the adjustment step, the power transmission unit does not switch from the non-power transmission state to the power transmission state.

[0012] If, as a result of the first power switching step, the power transmission unit switches from the non-power transmission state to the power transmission state, the cam contact portion may be in a position where it is located on the second cam surface but could enter the guide path, i.e., an unstable position. In such a case, there is a high probability that the power transmission switching will eventually fail, and therefore it is preferable to adjust the reference displacement amount M. According to this embodiment, if the power transmission unit switches from the non-power transmission state to the power transmission state as a result of the first power switching step, the power switching step is performed with the adjusted reference movement amount M obtained by adding the adjustment amount mb to the reference movement amount M. This is expected to cause the cam contact portion to move too far in the first direction from the second cam surface and enter the guide path. In other words, the power transmission switching can be intentionally made to fail. Then, by performing the retry step and the reference displacement correction step, failures in switching power transmission can be suppressed.

[0013] A third embodiment is an embodiment dependent on the first embodiment, characterized in that, in the correction mode, if the power transmission unit does not switch from the non-power transmission state to the power transmission state as a result of the retry step, the control unit repeatedly executes the retry step up to a limit of Na retry counts, and if the power transmission unit does not switch from the non-power transmission state to the power transmission state even after executing the retry step Na retry counts, the control unit terminates the correction mode as an error.

[0014] If the power transmission unit does not switch from the non-power transmission state to the power transmission state even after repeating the retry step, there is a possibility that a mechanical malfunction has occurred that cannot be addressed by control. In such cases, repeating the retry step more than necessary will only lead to unnecessary waste of time. According to this embodiment, if the power transmission unit does not switch from the non-power transmission state to the power transmission state as a result of the retry step, the retry step is repeatedly executed up to a limit of Na, thereby suppressing the consumption of unnecessary time. Furthermore, this embodiment is not limited to the first embodiment described above, but may also be dependent on the second embodiment described above.

[0015] A fourth aspect is characterized in that, in the correction mode, if the power transmission unit does not switch from the non-power transmission state to the power transmission state even after the retry step is executed the number of retries Na, the control unit holds the most recent reference displacement M as the new reference displacement M, and further, when the correction mode is executed again, the control unit compares the reference displacement M with a threshold Sd, and if the reference displacement M is less than or equal to the threshold Sd, the amount obtained by adding an adjustment amount mf to the reference displacement M is used as the new reference displacement M and the correction mode is executed.

[0016] If the correction mode is executed once and the retry step is performed the number of times Na the power transmission unit does not switch from the non-power transmission state to the power transmission state, the correction mode is terminated. In this case, it is possible that the cam contact portion could not reach the second cam surface from the beginning. Therefore, when the correction mode is executed again, even if the most recent reference movement amount M is used as is, the cam contact portion may not be able to reach the second cam surface from the first cam surface, potentially leading to the same result. According to this embodiment, when the control unit executes the correction mode again, it compares the reference movement amount M with a threshold Sd, and if the reference movement amount M is less than or equal to the threshold Sd, it executes the correction mode with the amount obtained by adding an adjustment amount mf to the reference movement amount M as the new reference movement amount M.Therefore, it is expected that the cam contact portion will reach the second cam surface from the first cam surface, and the reference movement amount M can be corrected to an appropriate value by the correction mode.

[0017] A fifth aspect is an aspect dependent on the first aspect, characterized in that the power transmission section includes a first gear that transmits the gear of the power source to the driven section, and a second gear that is movable in the direction of movement of the carriage, which disengages from the first gear when the switching section is in the first position and engages with the first gear when the switching section is in the second position.

[0018] According to this embodiment, the power non-transmission state and the power transmission state can be switched with a simple configuration by engaging and disengaging the first gear and the second gear. Furthermore, this embodiment is not limited to the first embodiment described above, but may be dependent on any of the second to fourth embodiments described above.

[0019] The sixth embodiment is an embodiment dependent on any of the first to fifth embodiments, comprising: an discharge unit for discharging a medium on which recording has been performed by the recording unit; and a medium receiving tray for receiving the medium discharged by the discharge unit, the medium receiving tray being displaceable between a storage position and a protruding position that protrudes from the storage position in the direction of medium discharge, wherein the driven unit is the medium receiving tray. According to this embodiment, in a configuration in which the driven unit is a medium receiving tray that receives the medium discharged by the discharge unit, any of the effects of the first to fifth embodiments described above can be obtained.

[0020] The seventh aspect is an aspect dependent on the sixth aspect, comprising a tray detection unit for detecting the position of the media receiving tray, wherein the control unit determines, based on the detection information from the tray detection unit, whether the power transmission unit is in the power transmission state or the power non-transmission state.

[0021] According to this embodiment, the device has a tray detection unit that detects the position of the media receiving tray, and the control unit determines whether the power transmission unit is in the power transmission state or the power non-transmission state based on the detection information from the tray detection unit. Therefore, there is no need to provide a dedicated detection means for detecting the state of the power transmission unit, and the cost of the device can be suppressed.

[0022] The eighth aspect is a control program for a recording device, the recording device comprising: a power source; a power transmission unit that can switch between a power transmission state in which the power of the power source is transmitted to a driven unit and a power non-transmission state in which the power is not transmitted to the driven unit; a recording unit that records on a medium, a carriage that can move in a first direction intersecting the transport direction of the medium and in a second direction opposite to the first direction; and a control unit that controls the operation of the carriage, the power transmission unit comprising: a switching unit that switches from the power non-transmission state to the power transmission state by moving from a first position to a second position in the first direction relative to the first position as the carriage moves in the first direction; and a cam mechanism that holds the switching unit in the second position, the cam mechanism comprising: a cam having a cam surface; and a cam contact portion that moves integrally with the switching unit and moves while in contact with the cam surface, the cam surface comprising: a first cam surface that the cam contact portion contacts when the switching unit is in the first position; and a cam contact portion that moves such that the switching unit is in the second position The control program comprises a second cam surface that holds the cam contact portion, and a guide path that guides the cam contact portion to the first cam surface when the cam contact portion moves away from the second cam surface in the first direction, wherein the control program causes the computer to execute a correction mode for correcting the reference travel amount M of the carriage for moving the switching unit from a first position to a second position, and the correction mode is characterized by causing the computer to execute a power switching step that moves the carriage based on the reference travel amount M, a retry step in which, if the power transmission unit does not switch from the non-power transmission state to the power transmission state as a result of the power switching step, the amount obtained by subtracting an adjustment amount ma from the reference travel amount M is used as the adjusted reference travel amount M and the power switching step is performed again, and a reference travel amount correction step in which, if the power transmission unit switches from the non-power transmission state to the power transmission state as a result of the retry step, the amount obtained by subtracting an adjustment amount mc from the adjusted reference travel amount M is used as the new reference travel amount M. According to this embodiment, the same effects and advantages as those of the first embodiment described above can be obtained.

[0023] The ninth aspect is a method for controlling a recording device, the recording device comprising: a power source; a power transmission unit that can switch between a power transmission state in which the power of the power source is transmitted to a driven unit and a power non-transmission state in which the power is not transmitted to the driven unit; a recording unit that records on a medium and a carriage that can move in a first direction intersecting the transport direction of the medium and in a second direction opposite to the first direction; and a control unit that controls the operation of the carriage, the power transmission unit comprising: a switching unit that switches from the power non-transmission state to the power transmission state by moving from a first position to a second position in the first direction relative to the first position as the carriage moves in the first direction; and a cam mechanism that holds the switching unit in the second position, the cam mechanism comprising: a cam having a cam surface; and a cam contact portion that moves integrally with the switching unit and moves while in contact with the cam surface, the cam surface comprising: a first cam surface that the cam contact portion contacts when the switching unit is in the first position; and the switching unit The control method comprises a second cam surface that holds the cam contact portion so as to be located in a second position, and a guide path that guides the cam contact portion to the first cam surface when the cam contact portion moves away from the second cam surface in the first direction, wherein the control method includes a correction mode for correcting the reference movement amount M of the carriage for moving the switching unit from a first position to a second position, the correction mode includes a power switching step of moving the carriage based on the reference movement amount M, a retry step of performing the power switching step if the power transmission unit does not switch from the non-power transmission state to the power transmission state as a result of the power switching step, and a reference movement amount correction step of holding the amount obtained by subtracting the adjustment amount mc from the adjusted reference movement amount M as a new reference movement amount M if the power transmission unit switches from the non-power transmission state to the power transmission state as a result of the retry step. According to this embodiment, the same effects and advantages as those of the first embodiment described above can be obtained.

[0024] The present invention will be described in detail below. In the following explanation, the three mutually orthogonal axes will be referred to as the X-axis, Y-axis, and Z-axis, as shown in each figure. 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 each figure, the direction indicated by the arrows on the three axes (X, Y, Z) is the positive direction for each direction. For example, the X-axis direction corresponds to the reciprocating movement direction of the carriage 3. The +X direction is an example of a first direction and corresponds to the side where the power transmission unit 100 is installed. The -X direction is an example of a second direction and corresponds to the home position side of the carriage 3. Furthermore, the +Y direction corresponds to the discharge direction of the media receiving tray 5.

[0025] As shown in Figure 1, the recording device 1 of this embodiment includes a housing 2. A front cover 2a is provided as part of the housing 2. The recording device 1 of this embodiment can change state from state ST1 to state ST2 in Figure 1. Specifically, the recording device 1 is configured so that the media receiving tray 5 can be displaced between a stored position and a protruding position by a media feeding motor 6, as shown in Figure 2. Hereafter, the media feeding motor 6 will be abbreviated as "PF motor 6".

[0026] In this embodiment, the recording device 1 includes, inside the housing 2, a carriage 3 that moves back and forth along the X-axis direction as shown in Figures 9 and 10, and a recording head 4, which is an example of a recording unit mounted on the carriage 3 and used for recording on a medium, as shown in Figure 2. The recording device 1 also includes, inside the housing 2, a transport roller 7 for transporting the medium and a discharge roller 8 as a discharge unit for discharging the recorded medium, as shown in Figure 2. The recording device 1 also includes, inside the housing 2, a medium receiving tray 5 for receiving the medium discharged by the discharge roller 8, as shown in Figures 9 and 10, and a PF motor 6, which is the power source for the transport roller 7 and the discharge roller 8, as shown in Figure 2. As will be described in more detail later, the PF motor 6 is also the power source for the medium receiving tray 5.

[0027] Power is transmitted from the PF motor 6 to the conveyor roller 7 and discharge roller 8 as follows. As shown in Figure 6, a motor pulley 6a is attached to the PF motor 6. A belt 10 is stretched over the motor pulley 6a. In addition to the motor pulley 6a, the belt 10 is also wrapped around the conveyor roller pulley 7a on the conveyor roller 7, the discharge roller pulley 8a on the discharge roller 8, and pulley 9. When the rotation shaft of the PF motor 6 rotates, the motor pulley 6a rotates, and the belt 10 rotates accordingly, and the conveyor roller 7 and discharge roller 8 rotate in conjunction with the rotation of the conveyor roller pulley 7a and discharge roller pulley 8a. As shown in Figures 7 and 12, the conveyor roller 7 is provided with an encoder scale 7b that constitutes a rotary encoder 211 (see Figure 21) for detecting the rotation of the conveyor roller 7.

[0028] Here, as described above, the media receiving tray 5 can take on a storage position and a protruding position that is displaced from the storage position in the direction of media discharge. Furthermore, the recording device 1 of this embodiment is equipped with a power transmission unit 100 inside the housing 2, as shown in Figure 2 and other figures. Here, the power transmission unit 100 can switch between a power transmission state in which power from the PF motor 6 is transmitted from the PF motor 6 to the media receiving tray 5 and a power non-transmission state in which power from the PF motor 6 is not transmitted from the PF motor 6 to the media receiving tray 5.

[0029] Here, we will give an overview of the power transmission unit 100. As shown in Figures 7 to 12, the power transmission unit 100 has a gear 101 that engages with the transport roller pulley 7a. Gear 101 engages with gear 102, and the rotation axis 102a of gear 102 is provided with a locking component 103, which is a D-type gear, and a transmission component 104, which is a gear. The rotation axes 102a of gear 102, locking component 103, and transmission component 104 are aligned along the X-axis direction. The locking component 103 and transmission component 104 are configured to move integrally along the X-axis direction by the power switching mechanism 120 that constitutes the power transmission unit 100.

[0030] Although the details of the power switching mechanism 120 will be described later, the locking component 103 is configured to not rotate by interfering with the holding component 123, which is part of the power switching mechanism 120, and the transmission component 104 is configured to rotate in conjunction with the rotation of the gear 102.

[0031] Furthermore, as shown in Figures 7 to 12, the power transmission unit 100 has a gear 105. The power transmission unit 100 is configured such that the power switching mechanism 120 moves the locking component 103 and the transmission component 104 along the X-axis, thereby enabling the gear 105 to engage with the locking component 103 and the gear 105 to engage with the transmission component 104. When gear 105 and locking component 103 engage, the power transmission unit 100 enters a non-power transmission state. When gear 105 and transmission component 104 engage, the power transmission unit 100 enters a power transmission state. With the above configuration, when gear 102 is rotating, gear 105 will not rotate when it is engaged with the locking component 103, but will rotate when it is engaged with the transmission component 104.

[0032] Furthermore, as shown in Figures 7 to 12, gear 105 engages with gear 106, gear 106 engages with gear 107, gear 107 engages with gear 108, and gear 108 engages with gear 109. Gear 109 engages with gear 110. Gear 110 engages with gear 111, which shares a common axis of rotation, via a friction forming portion 112. In other words, gear 110, gear 111, and the friction forming portion 112 constitute a friction gear.

[0033] The friction forming part 112 is a known friction clutch, and transmits the rotation of gear 110 to gear 111 via frictional force. Therefore, for example, even if the media receiving tray 5 is stopped by an external force and thus unable to rotate gear 111, gear 110 can still rotate against the frictional force. Alternatively, even if gear 111 rotates due to the manual displacement of the media receiving tray 5, gear 110 can maintain its stopped rotation. This configuration suppresses damage to the power transmission part 100.

[0034] The gear 111 engages with the gear 113, which is the final stage of the drive gear train of the power transmission unit 100. The gear 113 is configured to rotate together with a pinion 114 that shares a common axis of rotation, and the pinion 114 engages with a rack 5a formed on the media receiving tray 5, so that the media receiving tray 5 can move along the Y-axis direction as the gear 113 rotates. Thus, the power transmission unit 100 of this embodiment has a power switching mechanism 120 and a drive gear train from gear 101 to gear 113.

[0035] In this embodiment of the recording device 1, the power transmission unit 100 is located in region L1 between the outer end of the transport roller pulley 7a and the outer end of the discharge roller pulley 8a in the Y-axis direction corresponding to the discharge direction of the medium, as shown in Figure 6. If the power transmission unit 100 is positioned on the leading side in the discharge direction of the discharge roller pulley 8a, the entire device tends to protrude in the +Y direction, which is the leading side in the discharge direction. Also, if the power transmission unit 100 is positioned on the -Y direction, which is the rear end in the discharge direction of the transport roller pulley 7a, the entire device tends to protrude towards the rear end in the discharge direction. However, by positioning the power transmission unit 100 in region L1 as described above, the overall length of the recording device 1 in the discharge direction can be shortened. Therefore, the recording device 1 of this embodiment achieves miniaturization in a recording device having a medium receiving tray 5 that can be displaced between a storage position and a protruding position.

[0036] Furthermore, as shown in Figures 4 and 5, the power transmission unit 100 in this embodiment is located closer to the center of the recording device 1 in the X-axis direction corresponding to the reciprocating movement direction of the carriage 3, rather than within the routing range L2 of the belt 10, i.e., on the -X direction side in Figures 4 and 5. Here, if the power transmission unit 100 is positioned outside the recording device 1 in the reciprocating direction of the carriage 3 beyond the routing range of the belt 10, the entire device tends to protrude in the reciprocating direction of the carriage 3. However, since the power transmission unit 100 is located on the -X side of the range L2 as described above, the overall length of the recording device 1 in the reciprocating direction of the carriage 3 can be shortened. Therefore, the recording device 1 of this embodiment achieves particular miniaturization in a recording device having a media receiving tray 5 that can be displaced between a storage position and a protruding position.

[0037] Furthermore, as shown in Figure 6, the power transmission unit 100 in this embodiment is located around the PF motor 6 when viewed from a direction along the reciprocating movement direction of the carriage 3. In other words, the power transmission unit 100 is positioned to bypass the PF motor 6. Therefore, the recording device 1 in this embodiment suppresses interference between the power transmission unit 100 and the PF motor 6.

[0038] Next, the recording device 1 of this embodiment will be described from the viewpoint of the arrangement of the power switching mechanism 120. The recording device 1 of this embodiment has a power switching mechanism 120, as shown in Figures 8 to 12, a switching lever portion 121, a cam 122 (see Figures 3A and 3B), and a holding portion 123. The switching lever portion 121 switches the power transmission portion 100 between a power transmission state and a power non-transmission state. The cam 122 has a cam surface 122a (see Figure 3B). The holding portion 123 holds the lock component 103 and the transmission component 104, as shown in Figures 11 and 15, and has a pin 123a arranged on the cam surface 122a, as shown in Figure 3B. The cam 122 and pin 123a constitute a cam mechanism 131 (see Figure 3B) that holds the holding portion 123 in a second position, which will be described later. The pin 123a is an example of a cam contact portion that moves while in contact with the cam surface 122a.

[0039] As will be described in more detail later, the power switching mechanism 120 can switch between a power non-transmission state and a power transmission state by moving the switching lever portion 121 in the X-axis direction and the accompanying movement of the holding portion 123 in the X-axis direction. As shown in Figure 2, the power switching mechanism 120 is located in region L3 between the outer end of the PF motor 6 and the outer end of the conveying roller 7 in the Y-axis direction corresponding to the discharge direction of the medium. Note that position S1, shown in Figure 3A, is the contact position between the cam surface 122a and the pin 123a.

[0040] If the power switching mechanism 120 is positioned on the leading edge side (+Y direction) in the discharge direction than the outer end of the PF motor 6, the entire device tends to protrude towards the leading edge side (+Y direction) in the discharge direction. Similarly, if the power switching mechanism 120 is positioned on the rear edge side (-Y direction) in the discharge direction than the outer end of the transport roller 7, the entire device tends to protrude towards the rear edge side (-Y direction) in the discharge direction. However, by positioning the power switching mechanism 120 in region L3 as described above, the overall length of the recording device 1 in the discharge direction (Y-axis direction) can be shortened. Therefore, the recording device 1 of this embodiment achieves miniaturization in a recording device having a media receiving tray 5 that can be displaced between a storage position and a protruding position.

[0041] Furthermore, as shown in Figure 3A, in this embodiment, the position S1 of the power switching mechanism 120 overlaps with the occupied range L4 of the PF motor 6 in the reciprocating movement direction (X-axis direction) of the carriage 3. In addition, as shown in Figure 2, in this embodiment, the position S1 of the power switching mechanism 120 overlaps with the occupied range L5 of the PF motor 6 in the Z-axis direction, which corresponds to the intersection direction that intersects both the discharge direction (Y-axis direction) and the reciprocating movement direction (Y-axis direction) of the carriage.

[0042] Thus, it is preferable that the power switching mechanism 120 overlaps the PF motor 6 in at least one of the reciprocating direction (X-axis direction) and the intersecting direction (Z-axis direction) of the carriage 3. With this configuration, the power switching mechanism 120 can be efficiently positioned relative to the PF motor 6 in at least one of the reciprocating direction (X-axis direction) and the intersecting direction (Z-axis direction) of the carriage 3. As a result, the recording device having a media receiving tray 5 that can be displaced between a stowed position and a protruding position can be made particularly compact.

[0043] Furthermore, as shown in Figure 2, in this embodiment, the position S1 of the power switching mechanism 120 overlaps with the occupied range L6 of the gear 113, which is the final stage of the drive gear train of the power transmission unit 100, in the intersecting direction (Z-axis direction). With this configuration, the power switching mechanism 120 of this embodiment can be efficiently positioned relative to the drive gear train of the power transmission unit 100 in the intersecting direction (Z-axis direction). As a result, the recording device 1 of this embodiment, which has a media receiving tray 5 that can be displaced between a stowed position and a protruding position, can be made particularly compact.

[0044] The following describes the relationship between the operation of the power transmission unit 100, particularly the operation of the switching lever portion 121 of the power switching mechanism 120, the resulting operation of the drive gear train of the power transmission unit 100, and the operation of the carriage 3. As shown in Figures 8 and 9, the switching lever portion 121 is located within the reciprocating movement range A1 of the carriage 3 in the X-axis direction. The reciprocating movement range A1 of the carriage 3 refers to the area in which the carriage 3 exists during its reciprocating movement. The switching lever portion 121 can be displaced between a contact position and a non-contact position by rotation. The contact position of the switching lever portion 121 is a position in which the tip portion 121a, which is part of the switching lever portion 121, can come into contact with the carriage 3 as the carriage 3 moves back and forth, as shown in state ST2 in Figures 9 and 13. The non-contact position of the switching lever portion 121 is a position in which no part of the switching lever portion 121 comes into contact with the carriage 3 even when the carriage 3 moves, as shown in state ST1 in Figures 8 and 13.

[0045] Specifically, by rotating the PF motor 6 in the opposite direction to the rotation direction during media transport, the transport roller 7 is rotated in the rotation direction R1 in Figure 13, causing the switching lever 121 to move from the non-contact position in the initial state ST1 in Figure 13 to the contact position in the initial state ST2 in Figure 13. In the initial state, the switching lever 121 is biased in the rotation direction R2.

[0046] As shown in Figure 13, the switching lever portion 121 has a tip portion 121a that moves forward and backward within the reciprocating movement range A1 of the carriage 3 by rotation, and an engaging portion 121b that does not engage with the engaged portion 123b of the holding portion 123 in the non-contact position, but engages with the engaged portion 123b of the holding portion 123 in the contact position. Here, the switching lever portion 121 is biased toward the -X direction by the elastic member 125 (see Figures 10 and 11), and the holding portion 123 is biased toward the -X direction by the coil spring 124. However, when the switching lever portion 121 is in the contact position, as the carriage 3 moves toward the +X direction, the holding portion 123 comes into contact with the carriage 3 and slides toward the +X direction, causing the holding portion 123 to slide toward the +X direction together with the switching lever portion 121. As the holding portion 123 slides toward the +X direction together with the switching lever portion 121, the power transmission portion 100 switches between a non-power transmission state and a power transmission state.

[0047] The holding part 123 is an example of a switching part that switches the power transmission part 100 from a non-power transmission state to a power transmission state by moving from a first position to a second position in the +X direction relative to the first position as the carriage 3 moves in the +X direction. States ST1 and ST2 in Figure 15 show the state in which the holding part 123 is in the first position, and state ST3 in Figure 15 shows the state in which the holding part 123 is in the second position.

[0048] Here, we will describe the cam surface 122a of the cam 122 in detail. As shown in Figure 3B, the cam surface 122a has a first cam surface P1, a second cam surface P2, and a guide path P3. The pin 123a provided on the retaining portion 123 is positioned on the cam surface 122a. The cam 122 has a cylindrical portion 122f, and the cam rotation shaft 130 is fitted into the cylindrical portion 122f as shown in Figure 3C. This allows the cam 122 to rotate around the cam rotation shaft 130 in rotational directions Ra1 and Ra2.

[0049] The axis of the cam rotation shaft 130 is parallel to the Z-axis direction. The cam 122 is slidable in the Z-axis direction relative to the cam rotation shaft 130. The cam 122 is pressed in the +Z direction by a pressing member (not shown), such as a compression coil spring. As a result, the cam surface 122a presses against the pin 123a. While in contact with the cam surface 122a, the pin 123a moves along the cam surface 122a as the holding part 123 moves along the X-axis direction. The reference numerals D1, D2, and D3 in Figure 3B indicate the movement paths of the pin 123a as it moves along the cam surface 122a.

[0050] When the power transmission unit 100 is in a non-power transmission state, the pin 123a is located on the first cam surface P1. When the carriage 3 moves in the +X direction from this state, and the switching lever unit 121 and the holding unit 123 move in the +X direction, the pin 123a moves from the first cam surface P1 to the second cam surface P2 as shown by the movement path D1. When the pin 123a moves to the second cam surface P2, the power transmission unit 100 switches from a non-power transmission state to a power transmission state.

[0051] A wall-shaped pin retaining portion 122b is provided on the second cam surface P2. When the pin 123a moves to the second cam surface P2, it catches on the pin retaining portion 122b, and is held on the second cam surface P2 even when the carriage 3 retracts in the -X direction. A pressing force from the coil spring 124 (see Figures 11 to 13) acts on the pin 123a in the -X direction, causing the pin 123a to try to return from the second cam surface P2 to the first cam surface P1. However, once the pin 123a has moved completely to the second cam surface P2, overcoming the pin retaining portion 122b, the pin 123a catches on the pin retaining portion 122b and is held on the second cam surface P2.

[0052] When switching from a state where pin 123a is held on the second cam surface P2, i.e., a power transmission state of the power transmission unit 100, to a non-power transmission state, the carriage 3 is moved in the +X direction, and pin 123a is moved from the second cam surface P2 to the guide path P3. The movement path D2 is the movement path of pin 123a at this time. Subsequently, carriage 3 retracts in the -X direction.

[0053] The guide path P3 is lower than the second cam surface P2 in the -Z direction by a stepped section 122c, and the structure is such that the pin 123a that enters the guide path P3 cannot return to the second cam surface P2. The guide path P3 guides the pin 123a to the first cam surface P1. The pin 123a that enters the guide path P3 is moved toward the first cam surface P1 by the pressing force of the coil spring 124 (see Figures 11 to 13) and returns to the first cam surface P1. The movement path D3 is the movement path of the pin 123a at this time.

[0054] Since the guide path P3 is formed in a curved shape so as to bypass the second cam surface P2 and reach the first cam surface P1, when the pin 123a moves along the guide path P3 toward the first cam surface P1, the cam 122 rotates around the cam rotation axis 130. Specifically, when the pin 123a enters the guide path P3 from the second cam surface P2, it comes into contact with the stepped portion 122c due to the pressing force of the coil spring 124 (see Figures 11 to 13). As a result, the cam 122 rotates in the rotational direction Ra2. Then, when the pin 123a returns from the guide path P3 to the first cam surface P1, the cam 122 rotates in the rotational direction Ra1. Furthermore, the first cam surface P1 is lower than the guide path P3 in the -Z direction by the stepped portion 122e, so the pin 123a does not enter the guide path P3 from the first cam surface P1.

[0055] Furthermore, the outer wall portion 122d of the guideway P3 is formed to widen the path width so that the pin 123a does not come into contact with the pin 123a as much as possible when the pin moves from the second cam surface P2 to the guideway P3. In Figure 3C, reference numeral 122d-1 indicates an outer wall portion shown as a comparative example. The guideway P3 formed by such an outer wall portion 122d-1 has a narrower path width than the guideway P3 formed by the outer wall portion 122d. When the pin 123a enters the guideway P3 formed by such an outer wall portion 122d-1, the pin 123a, which is trying to return to the first cam surface P1, presses against the outer wall portion 122d-1. In this case, if the pin 123a presses against the outer wall portion 122d-1 in the +X direction from the axis center of the cam rotation shaft 130, the cam 122 may not be able to rotate while the pin 123a is in contact with the outer wall portion 122d-1, and there is a risk that it will lock up. However, the outer wall portion 122d of the guideway P3 is formed to widen the path width so that the pin 123a does not come into contact with the pin 123a as much as possible when it returns to the first cam surface P1, thereby suppressing the occurrence of the lock described above.

[0056] Furthermore, when pin 123a moves from the second cam surface P2 to the guide path P3, and then returns to the first cam surface P1 via the guide path P3, the power transmission unit 100 switches from a power transmission state to a power non-transmission state.

[0057] The switching of the power transmission unit 100 from a non-power transmission state to a power transmission state, and from a power transmission state to a non-power transmission state, will be further explained below with reference to Figures 3B, 14, 15, 16, and 20. Figures 14, 15, and 16 all show the power transmission unit 100 switching from a non-power transmission state to a power transmission state. Note that the carriage 3 is not shown in Figures 14 to 16. The control described below will be performed by the control unit 200 (see Figure 21), which will be described later. The states ST1 in Figures 14, 15, and 16 all correspond to state ST1 in Figure 13, and represent the state in which the switching lever portion 121 is in the initial non-contact position. In this state, the pin 123a of the holding portion 123 is located on the first cam surface P1 in Figure 3B.

[0058] When the PF motor 6 is reversed from this state, the state transitions from ST1 in Figures 14, 15, and 16 to ST2 in Figures 14, 15, and 16. This corresponds to the rotation of the switching lever portion 121, transitioning from state ST1 in Figure 13 to state ST2 in Figure 13. Specifically, the switching lever portion 121 rotates in the rotational direction R1, the tip portion 121a enters the reciprocating movement range A1 of the carriage 3, and the engaging portion 121b engages with the engaged portion 123b. Even in this state, the pin 123a of the holding portion 123 is located on the first cam surface P1 in Figure 3B. In this case, states ST1 and ST2 in Figures 14, 15, and 16 show that the gear 105 and the locking component 103 are engaged, and the power transmission unit 100 is in a non-power transmission state.

[0059] Next, from state ST2 as shown in Figures 14, 15, and 16, the tip portion 121a contacts the carriage 3, pushing the switching lever portion 121 in the +X direction, and the device transitions to state ST3 as shown in Figures 14, 15, and 16. In this state ST3, the pin 123a of the retaining part 123 has moved to the second cam surface P2 in Figure 3B.

[0060] In the state ST3 shown in Figures 14, 15, and 16, the gear 105 and the transmission component 104 are engaged, and the power transmission unit 100 is in a power transmission state. Also, in state ST3 shown in Figures 14, 15, and 16, the engaging portion 121b and the engaged portion 123b are supported on the upper surface 126a of the support frame 126 that supports the gear 101, as shown in Figure 20. Therefore, disengagement between the engaging portion 121b and the engaged portion 123b is suppressed.

[0061] Next, from state ST3 as shown in Figures 14, 15, and 16, the tip portion 121a contacts the carriage 3, pushing the switching lever portion 121 further in the +X direction, transitioning to state ST4 as shown in Figures 14, 15, and 16. In this state, the pin 123a of the retaining part 123 is located in the guide path P3 in Figure 3B. As the carriage 3 moves in the -X direction, the biasing force of the elastic member 125 and the coil spring 124 acting in the -X direction causes the pin 123a to return to the first cam surface P1.

[0062] In this embodiment, the recording device 1, with this configuration, allows for a favorable arrangement of the power switching mechanism 120 and the switching lever 121 for switching the power transmission unit 100 between a non-power transmission state and a power transmission state, and enables miniaturization of the entire mechanism for switching the media receiving tray 5 between the stored position and the protruding position. Furthermore, this allows for miniaturization of the entire recording device 1.

[0063] Furthermore, as described above, in the recording device 1 of this embodiment, the switching lever portion 121, as shown in state ST2 in Figures 9 and 13, has at least its tip portion 121a entering the reciprocating movement range A1 of the carriage 3 at the contact position, and as shown in state ST1 in Figures 8 and 13, the tip portion 121a exits the reciprocating movement range A1 of the carriage 3 at the non-contact position. In this way, by having the tip portion 121a exit the reciprocating movement range A1 of the carriage 3 at the non-contact position when power is not being transmitted, it is possible to eliminate the need to provide the switching lever portion 121 outside the reciprocating movement range A1 of the carriage 3, and the recording device 1 can be made particularly compact.

[0064] Furthermore, as described above, in the recording device 1 of this embodiment, the power transmission unit 100 includes a locking component 103 that prevents the rotation of the gear when it is in a non-power transmission state, as shown in state ST2 in Figures 14 and 16, and a transmission component 104 that transmits power from the PF motor 6 when it is in a power transmission state, as shown in state ST3 in Figures 14 and 16. As is clear from comparing state ST2 in Figure 16 with state ST3 in Figure 16, the switching lever portion 121 contacts the carriage 3 and slides in the +X direction, thereby switching the connection of the locking component 103 and the transmission component 104 in the power transmission unit 100 to the gear 105.

[0065] The recording device 1 of this embodiment, with this configuration, makes it possible to easily create a mechanism that prevents the rotation of the gears when power is not being transmitted, and a mechanism that transmits power from the PF motor 6 when power is being transmitted. Furthermore, in the recording device 1 of this embodiment, a load is generated in the friction forming part 112 (see Figures 11 and 12) when the media receiving tray 5 is operated manually. The purpose of generating this load is to prevent the media receiving tray 5 from moving due to its own weight when the device is tilted, such as when storing the recording device 1, and to create a tactile feel for manual operation. When power is transmitted, the connection between the locking part 103 and the transmission part 104 is switched to release the lock on the gear train and drive the media receiving tray 5 with motor power.

[0066] Here, the power transmission unit 100 is configured such that the connection from the locking component 103 to the transmission component 104 and to the gear 105 can be switched by applying an external load by contacting the carriage 3 in the +X direction, which is the direction in which the switching lever 121 contacts and slides against the carriage 3, or by the user manually applying an external load, for example. With this configuration, the recording device 1 of this embodiment allows the user to manually switch between a power transmission state and a power non-transmission state, for example, when the power to the recording device 1 is turned off. Furthermore, it enables a reduction in the number of components in the mechanism that allows the user to manually switch between a power transmission state and a power non-transmission state.

[0067] Here, the configuration of the switching mechanism for the connection from the lock component 103 to the transmission component 104 to the gear 105 in the power transmission unit 100 will be explained with reference to Figures 16 to 19. Here, Figures 17, 18, and 19 represent state ST1 in Figure 16, that is, the state in which the pin 123a is on the first cam surface P1 in Figure 3B on the cam surface 122a of the cam 122. Also, in Figure 17, the compression spring 127, which will be described later, is omitted in order to make the shape of the rotation axis 102a of the gear 102 easier to understand.

[0068] As shown in Figures 18 and 19, the region of the gear 102 on the -X side of the center of the rotation axis 102a has a cross shape 102b. As shown in Figure 19, the transmission component 104 is provided with a cross-shaped hole that fits with the cross shape 102b of the rotation axis 102a, so that the transmission component 104 always rotates in conjunction with the rotation of the rotation axis 102a.

[0069] On the other hand, as shown in Figures 16 and 17, the locking component 103 is provided with a round hole through which the rotating shaft 102a passes. In states ST1, ST2, and ST3 of Figure 16, the round hole of the locking component 103 faces the cross-shaped region 102b of the rotating shaft 102a. Also, in state ST4 of Figure 16, the round hole of the locking component 103 faces the cylindrical region 102c of the rotating shaft 102a that is not the cross-shaped region 102b. Furthermore, in all states ST1, ST2, ST3, and ST4 of Figure 16, the locking component 103 is configured so that it does not rotate with the rotating shaft 102a even when the shaft rotates. As shown in Figure 17, the locking component 103 has a flange portion 103b that is roughly D-shaped, and even if the rotating shaft 102a rotates and is about to rotate together, the contact portion 123c of the holding portion 123 and the flange portion 103b come into contact with each other, preventing them from rotating together.

[0070] As shown in Figure 18, a compression spring 127 is provided between the gear 102 of the rotating shaft 102a and the locking component 103, and the locking component 103 is biased by the compression spring 127 in the -X direction, which is away from the gear 102. The locking component 103 has teeth 103a on the -X direction side and a substantially D-shaped flange portion 103b on the +X direction side. Because of the provision of such a compression spring 127 and the configuration of the locking component 103, even if the locking component 103 temporarily makes contact with the gear 105, the teeth of both components easily engage and are positioned appropriately. Furthermore, because such a compression spring 127 is provided, when transitioning from state ST2 in Figure 16 to state ST3 in Figure 16, the transmission component 104 is configured so that even if the teeth of the gear 105 temporarily make contact, the teeth of both components easily engage.

[0071] Next, the control system of the recording device 1 will be explained with reference to Figure 21. The control unit 200 performs various controls, including recording control in the recording device 1. The rotation of the transport rollers 7 and the operation of the carriage 3 are controlled by the control unit 200. Note that Figure 21 shows only the components necessary for explanation in this specification, and other components are not shown. The control unit 200 is electrically connected to the PF motor 6 and the carriage motor 207 as output systems. The carriage motor 207 is abbreviated as the CR motor 207. The CR motor 207 is the power source for the carriage 3. The carriage 3 is fixed to a part of an endless belt (not shown) that is wrapped along the X-axis direction, and the CR motor 207 drives the endless belt, thereby moving the carriage 3 in the X-axis direction. The motors mentioned above are DC motors, as an example.

[0072] The control unit 200 is electrically connected to a rotary encoder 211, a linear encoder 212, and a tray detection unit 213 as inputs. The rotary encoder 211 includes the encoder scale 7b (see Figure 7) described above, and a detection unit (not shown) that detects the rotation of the encoder scale 7b. Based on the detection information from the rotary encoder 211, the control unit 200 can detect the driving direction, driving amount, and driving speed of the PF motor 6 and the driveable object driven by it.

[0073] The linear encoder 212 has a linear encoder scale (not shown) extending in the X-axis direction and positioned along the movement area of ​​the carriage 3, and a detection unit (not shown) integrated with the carriage 3 for detecting the linear encoder scale. Based on the detection information from the linear encoder 212, the control unit 200 can detect the driving direction, driving amount, and driving speed of the carriage 3 driven by the CR motor 207.

[0074] The tray detection unit 213 is a detection means for determining the current position of the media receiving tray 5. In this embodiment, the tray detection unit 213 is configured to generate a signal change when the media receiving tray 5, which is in the storage position, moves toward the protruding position. However, the tray detection unit 213 may also be provided at both the storage position and the protruding position of the media receiving tray 5, so as to be able to detect when the media receiving tray 5 is in the storage position and when the media receiving tray 5 is in the protruding position. The tray detection unit 213 may be a contact-type sensor that contacts the media receiving tray 5, or it may be a non-contact sensor.

[0075] Furthermore, if the power transmission unit 100 is in a power transmission state, the media receiving tray 5 can be displaced, and if the power transmission unit 100 is not in a power transmission state, the media receiving tray 5 cannot be displaced. Therefore, the tray detection unit 213 can also serve as a means for detecting whether the power transmission unit 100 is in a power transmission state or a power transmission state.

[0076] The control unit 200 is also connected to an operation panel 210 (see also Figure 1). The operation panel 210 constitutes part of the exterior of the recording device 1. The operation panel 210 has multiple buttons and a display screen. The display screen is capable of displaying various information of the recording device 1. The control unit 200 controls the display of the operation panel 210 and also receives information transmitted from the operation panel 210.

[0077] The control unit 200 includes a CPU 201 that performs execution processing of computer programs, in other words, software, a volatile memory 202, and a non-volatile memory 203. Therefore, the control unit 200 can also be referred to as a computer. The CPU 201 performs various calculations necessary for executing the program 204 stored in the non-volatile memory 203. The volatile memory 202 is used as a temporary data storage area. The non-volatile memory 203 stores the program 204 and the control parameters 205 necessary for executing the program 204. The program 204 includes a program that performs the various controls described herein, and the control parameters 205 include parameters for executing the program 204. The various controls described herein are realized by the control unit 200 executing the program 204.

[0078] Next, referring to Figure 23, we will explain the relationship between the position and movement of the carriage 3 and the position of the pin 123a relative to the cam 122. In Figure 23, positions H0, H1, H2, and H3 represent the positions of carriage 3. Position H0 is the home position of carriage 3 and is set at the end in the -X direction. In the print standby state, carriage 3 is located at home position H0. The above positions will be further explained below with reference to Figure 22. Figure 22 is a flowchart showing the process flow when displacing the media receiving tray 5.

[0079] The control unit 200 reads the reference displacement amount M from the non-volatile memory 203 (see Figure 21) (step S101). The reference displacement amount M constitutes the control parameter 205 (see Figure 21). The reference displacement amount M will be explained later. Next, the control unit 200 reverses the PF motor 6 by a predetermined amount (step S102). As a result, the power transmission unit 100 switches from state ST1 to state ST2 in Figure 13. Next, the control unit 200 moves the carriage 3 to the switching standby position H1 shown in Figure 23 (step S103). The switching standby position H1 is the position where the carriage 3 waits when switching the power transmission unit 100 from a non-power transmission state to a power transmission state, or from a power transmission state to a non-power transmission state. When the carriage 3 is in the switching standby position H1, the carriage 3 is not in contact with the tip 121a of the switching lever unit 121 (see Figure 13).

[0080] Next, the control unit 200 moves the carriage 3 from the switching standby position H1 in the +X direction by a reference movement amount M (step S104). The reference movement amount M is the amount of movement of the carriage 3 required to move the pin 123a from the first cam surface P1 to the second cam surface P2. In Figure 23, reference numeral 123a-1 indicates a pin 123a located on the first cam surface P1, and reference numeral 123a-2 indicates a pin 123a that has moved in the +X direction due to the movement of the reference displacement M of the carriage 3. Furthermore, if we define the position of the retaining part 123 when the pin 123a is located on the first cam surface P1 as the first position, and the position of the retaining part 123 when the pin 123a is located on the second cam surface P2 as the second position, then the reference movement amount M can also be referred to as the amount of movement of the carriage 3 to move the retaining part 123 from the first position to the second position.

[0081] Next, the control unit 200 returns the carriage 3 to the switching standby position H1 (step S105). As a result, the carriage 3 moves away from the switching lever portion 121, and the pin 123a attempts to move in the -X direction due to the pressing force of the coil spring 124 (see Figure 13). However, since the pin holding portion 122b is located in the -X direction relative to the pin 123a, the pin 123a catches on the pin holding portion 122b and is held on the second cam surface P2. As a result, the power transmission unit 100 maintains the power transmission state.

[0082] Next, the control unit 200 drives the PF motor 6 by a predetermined amount to displace the media receiving tray 5 (step S106). In this embodiment, for example, the media receiving tray 5 is displaced in the +Y direction by the forward rotation of the PF motor 6, and the media receiving tray 5 is displaced in the -Y direction by the reverse rotation of the PF motor 6. That is, when displacing the media receiving tray 5 from the storage position to the protruding position, the PF motor 6 is driven in the forward direction, and when displacing the media receiving tray 5 from the protruding position to the storage position, the PF motor 6 is driven in the reverse direction. Furthermore, steps S102 to S106 described above may be used as tray drive control Sy in subsequent steps.

[0083] Next, the control unit 200 determines whether the media receiving tray 5 has been displaced to the target position (step S107). If it has switched to the target position (Yes in step S107), it moves the carriage 3 by an amount K in the +X direction from the switching standby position H1 (step S108). The amount K is the amount of movement of the carriage 3 to move the pin 123a from the second cam surface P2 to the guide path P3, as shown in Figure 23. The control unit 200 then moves the carriage 3 to the home position H0 (step S109). Furthermore, if the media receiving tray 5 does not displace to the target position in step S107 (No in step S107), the control unit 200 performs error processing. This error processing includes, for example, displaying an error message on the operation panel 210.

[0084] Here, even if the carriage 3 is moved by a reference amount M in step S104, the pin 123a may not move properly to the second cam surface P2 due to part tolerances, assembly errors, etc. As an example, the position of the pin 123a shown in Figure 24 is the case when, as a result of moving the carriage 3 by a reference amount M, the pin 123a has moved too far in the +X direction beyond the appropriate position. The appropriate position of the pin 123a is the position in which the entire pin 123a is in complete contact with the second cam surface P2, as indicated by reference numeral 123a-2 in Figure 23, with the pin 123a having a predetermined distance from the pin holding portion 122b and also having a predetermined distance from the stepped portion 122c. As shown in Figure 24, when the carriage 3 is moved by a reference amount M, if the pin 123a moves too far in the +X direction beyond the appropriate position, the pin 123a returns to the first cam surface P1. As a result, the power transmission unit 100 does not switch to the power transmission state, and the media receiving tray 5 cannot be driven.

[0085] To correct such improper movement of pin 123a, the control unit 200 is equipped with and capable of correcting the reference movement amount M of the carriage 3 for moving pin 123a from the first cam surface P1 to the second cam surface P2. The correction modes will be explained below, primarily with reference to Figures 26A and 26B, and also with reference to other figures. The correction mode is performed, for example, during the manufacturing process of recording device 1. However, it is also possible for it to be performed in the user's environment.

[0086] The parameters used below can be, for example, the following values. These parameters are stored in the non-volatile memory 203 as control parameters 205 (see Figure 21). The step number is the number of pulses transmitted from the linear encoder 212 (see Figure 21). Initial reference displacement M: 66 (steps) Adjustment amount ma:2 (step) Adjustment amount mb:10(step) Adjustment amount mc:6 (step) Threshold Sd: 46 (step) Adjustment amount mf:32(step) Number of retries: Na: 10

[0087] In correction mode, the control unit 200 sets the retry counter N to zero (step S201), and then reads the reference displacement amount M from the non-volatile memory 203 (step S202). This reference displacement M may be reduced by a process described later, but when the correction mode is performed for the first time, the reference displacement M is at its initial value (66 (step)). If the correction mode has already been performed, a malfunction will occur if the reference displacement M is too small. This will be explained later, but if the control unit 200 finds that the read reference displacement M is greater than the threshold Sd (Yes in step S203), it proceeds to step S205. The case where No occurs in step S203 will be explained separately later.

[0088] Next, the control unit 200 executes tray drive control Sy to displace the media receiving tray 5 to the protruding position (step S205). The tray drive control Sy consists of steps S102 to S106 in Figure 22, as explained with reference to Figure 22. Before the start of the correction mode, the media receiving tray 5 is assumed to be in the stored position. If, as a result of step S205, the media receiving tray 5 is correctly displaced to the protruding position (Yes in step S208), the control unit 200 refers to the retry counter N (step S209). If the retry counter N is zero (No in step S209), processing is performed from position A in Figure 26B. This will be explained in more detail later.

[0089] If the retry counter N is greater than zero (Yes in step S209), it means that the reference displacement M has been adjusted at least once. Therefore, the control unit 200 subtracts the adjustment amount mc from the reference displacement M to obtain the new reference displacement M (step S210), and stores the new reference displacement M in the non-volatile memory 203 (step S210). The adjustment amount mc will be explained later.

[0090] If the answer in step S208 is No, i.e., the media receiving tray 5 is not correctly displaced to the protruding position, the control unit 200 increments the retry counter N (step S212). If the retry counter N exceeds the number of retries Na (Yes in step S213), the control unit 200 performs error processing (step S214). This error processing includes, for example, displaying an error message on the operation panel 210. Following the error processing, the control unit 200 saves the most recent reference displacement amount M to the non-volatile memory 203 (step S211). The operator can then adjust the process based on the error message. For example, they can check the state of the pin 123 and cam 122 and adjust the relative position of the pin 123 and cam 122 or replace parts. If the retry counter N does not exceed the number of retries Na (No in step S213), the control unit 200 subtracts the adjustment amount ma from the reference displacement amount M to set the new reference displacement amount M as the new reference displacement amount M (step S215), and repeats steps S205 onwards.

[0091] Here, we will explain the adjustment amount ma. Failure to drive the media receiving tray 5 suggests that the pin 123a in the power transmission unit 100 has moved too far in the +X direction from the second cam surface P2. For example, the position of pin 123a shown in Figure 24. However, since it is unknown how far the pin 123a has moved from the second cam surface P2, the control unit 200 retries (step S205) while gradually decreasing the reference movement amount M. Therefore, the adjustment amount ma is a very small amount, and as described above, the adjustment amount ma is 2 (steps) relative to the initial reference movement amount M (66 (steps)). Of course, the adjustment amount ma may be set to other values ​​as appropriate.

[0092] If the media receiving tray 5 is successfully driven after retries while gradually decreasing the reference movement amount M, it is likely that pin 123a barely remained on the second cam surface P2, as shown in Figure 25. In this case, in order to position pin 123a at the appropriate position on the second cam surface P2, as shown in pin 123a-2 in Figure 23, the control unit 200 subtracts the adjustment amount mc from the reference movement amount M to obtain a new reference movement amount M (step S210), and stores this in the non-volatile memory 203 (step S211). Thus, the adjustment amount mc is the amount required to position pin 123a at the appropriate position on the second cam surface P2.

[0093] Next, we will explain the case where step S209 is No. In this case, since the retry counter N is zero, it means that the media receiving tray 5 was successfully driven on the first attempt without adjusting the reference movement amount M even once. In this case, as shown in Figure 25, it is possible that the pin 123a barely remained on the second cam surface P2. Alternatively, it is possible that the pin 123a barely went over the pin holding part 122b. It is undesirable for the pin 123a to be positioned in such a highly uncertain position.

[0094] Therefore, if the result in step S209 is No, the reference movement amount M is increased so that the pin 123a definitely overshoots the second cam surface P2 in the +X direction. Step S220 in Figure 26B corresponds to this, and the control unit 200 sets the new reference movement amount M to the amount obtained by adding the adjustment amount mb to the reference movement amount M. Then, the control unit 200 uses the new reference movement amount M to execute tray drive control Sy to displace the media receiving tray 5 to the storage position (step S225). However, step S209 can be omitted.

[0095] If, as a result of step S225, the media receiving tray 5 is correctly displaced to the storage position (Yes in step S226), processing will be performed from position B in Figure 26A. If the answer in step S226 is No, i.e., the media receiving tray 5 has not been displaced to the correct storage position, the control unit 200 increments the retry counter N (step S221). If the retry counter N exceeds the number of retries Na (Yes in step S222), the control unit 200 performs error processing (step S227). This error processing includes, for example, displaying an error message on the operation panel 210. Then, processing proceeds from position C in Figure 26A. If the retry counter N does not exceed the number of retries Na (No in step S222), the control unit 200 subtracts the adjustment amount ma from the reference displacement amount M to obtain a new reference displacement amount M (step S223), and performs the retry operation again from step S225 onwards.

[0096] Next, step S204 will be explained. When the correction mode is performed for the first time, the reference movement amount M is at its initial value (66 (step)), but as described above, if the tray drive control fails, the reference movement amount M is reduced (step S215). Therefore, when the retry counter N reaches the number of retries Na, the reference movement amount M becomes the minimum value. In this embodiment, the maximum value of the retry counter N is 10, so the minimum value of the reference movement amount M is 46. In this case, the control unit 200 performs error processing (step S214) and saves the most recent reference movement amount M (step S211). However, if the correction mode is performed again, the reference movement amount M is at its minimum value, so there is a risk that the pin 123a may not be able to reach the second cam surface P2. Also, if the tray drive control fails even after performing the retry operation the maximum number of times, there is a risk that the reference movement amount M was insufficient from the beginning, and the pin 123a did not reach the second cam surface P2.

[0097] Therefore, if the read reference displacement M does not exceed the threshold Sd (No in step S203), the control unit 200 sets the amount obtained by adding the adjustment amount mf to the reference displacement M as the new reference displacement M (step S204). This ensures that the pin 123a reliably reaches the second cam surface P2.

[0098] As described above, the power transmission unit 100 includes a holding unit 123 that switches from a non-power transmission state to a power transmission state by moving from a first position to a second position in the +X direction relative to the first position as the carriage 3 moves in the +X direction, and a cam mechanism 131 that holds the holding unit 123 in the second position. The cam mechanism 131 includes a cam 122 having a cam surface 122a, and a pin 123a that moves integrally with the holding portion 123 and moves while in contact with the cam surface 122a. The cam surface 122a includes a first cam surface P1 to which the pin 123a contacts when the holding portion 123 is in a first position, a second cam surface P2 that holds the pin 123a so that the holding portion 123 is in a second position, and a guide path P3 that guides the pin 123a to the first cam surface P1 when the pin 123a moves away from the second cam surface P2 in the +X direction.

[0099] The control unit 200 can execute a correction mode to correct the reference movement amount M of the carriage 3 for moving the holding unit 123 from the first position to the second position. Furthermore, the control program for the recording device 1 according to this embodiment, which realizes the above-mentioned correction mode, is included in program 204 (see Figure 21). Furthermore, the control method for the recording device 1 according to this embodiment is realized by the control unit 200 executing program 204 (see Figure 21). The correction mode includes a power switching step (tray drive control Sy) that moves the carriage 3 based on the reference travel amount M. The correction mode also includes a retry step in which, if the power transmission unit 100 does not switch from a non-power transmission state to a power transmission state as a result of the power switching step, the adjusted reference travel amount M is set to the amount obtained by subtracting the adjustment amount ma from the reference travel amount M (steps S215, S223), and the power switching step is performed again. This retry step is step S205 after step S215, or step S225 after step S223. The correction mode then includes a reference movement amount correction step (including steps S210 and S211) which, when the power transmission unit 100 switches from a non-power transmission state to a power transmission state as a result of the retry step, holds the amount obtained by subtracting the adjustment amount mc from the adjusted reference movement amount M as the new reference movement amount M.

[0100] This type of correction mode can suppress failures in switching power transmission in the power transmission unit 100. Furthermore, if the power transmission unit 100 switches from a non-power transmission state to a power transmission state as a result of the retry step, the pin 123a may be in a position where it could enter the guide path P3, even though it is located on the second cam surface P2, i.e., an unstable position (see Figure 25). In such a case, there is a high probability that the power transmission switching will eventually fail. However, according to the above correction mode, if the power transmission unit 100 switches from a non-power transmission state to a power transmission state as a result of the retry step, the amount obtained by subtracting the adjustment amount mc from the adjusted reference movement amount M is held as the new reference movement amount M, so that the pin 123a can be moved to a stable position on the second cam surface P2. As a result, failures in switching power transmission can be suppressed.

[0101] Furthermore, it is preferable that the initial reference movement amount M(66(step)) is the amount by which the pin 123a reliably passes the pin holding portion 122b in the +X direction. Moreover, it is preferable that the initial reference movement amount M(66(step)) is the amount by which the pin 123a deviates from the second cam surface P2 in the +X direction.

[0102] The correction mode also includes an adjustment step (steps S220, S225) in which, if the power transmission unit 100 switches from a non-power transmission state to a power transmission state as a result of the first power switching step, the adjustment amount obtained by adding an adjustment amount mb to the reference movement amount M is used as the adjusted reference movement amount M and the power switching step is performed. Then, in correction mode, if the power transmission unit 100 does not switch from a non-power transmission state to a power transmission state as a result of the adjustment step (No in step S226), the control unit 200 proceeds to the retry step. This retry step is step S225, which follows step S223.

[0103] If, as a result of the first power switching step, the power transmission unit 100 switches from a non-power transmission state to a power transmission state, the pin 123a may be in an unstable position, as shown in Figure 25, where it is located on the second cam surface P2 but could potentially enter the guide path P3. In such a case, there is a high probability that the power transmission switching will eventually fail, and therefore it is preferable to adjust the reference displacement amount M. However, in the correction mode, if the power transmission unit 100 switches from a non-power transmission state to a power transmission state as a result of the first power switching step (No in step S209), the power switching step is performed using the adjusted reference movement amount M as the adjustment amount mb added to the reference movement amount M. This is expected to cause the pin 123a to move too far in the +X direction from the second cam surface P2 and enter the guide path P3. In other words, it is possible to intentionally cause the power transmission switching to fail. Subsequently, by performing a retry step and a reference displacement correction step, failures in power transmission switching can be suppressed.

[0104] Furthermore, it is preferable that the adjustment amount mb is the amount by which, in terms of design, the pin 123a reliably overshoots the second cam surface P2 in the +X direction and enters the guide path P3. Specifically, it is preferable that the adjustment amount mb is the amount of movement required for the pin 123a to enter the guide path P3 from the state in which it is most positioned in the -X direction on the second cam surface P2, plus a predetermined margin.

[0105] Furthermore, in correction mode, if the power transmission unit 100 does not switch from a non-power transmission state to a power transmission state as a result of the retry step (step S205 after step S215, or step S225 after step S223) (No in step S208, or No in step S226), the control unit 200 repeatedly executes the retry step up to a limit of Na (steps S212, S213, S221, S222). If the power transmission unit 100 does not switch from a non-power transmission state to a power transmission state even after the retry step is executed Na times (Yes in step S213, Yes in step S222), the control unit 200 terminates the correction mode as an error. If the power transmission unit 100 does not switch from a non-power transmission state to a power transmission state even after repeating the retry step, there is a possibility that a mechanical abnormality has occurred that cannot be addressed by control. In such cases, repeating the retry step more than necessary will lead to unnecessary time consumption. However, according to this embodiment, if the power transmission unit 100 does not switch from a non-power transmission state to a power transmission state as a result of the retry step, the retry step is repeatedly executed up to a limit of the number of retries Na, thereby suppressing the consumption of unnecessary time.

[0106] Furthermore, in correction mode, if the power transmission unit 100 does not switch from a non-power transmission state to a power transmission state even after the retry step is executed Na times, the control unit 200 retains the most recent reference displacement M as the new reference displacement M (step S211 after step S214, or step S211 after step S227). Furthermore, when the control unit 200 executes the correction mode again, it compares the reference displacement amount M with the threshold Sd, and if the reference displacement amount M is less than or equal to the threshold Sd (No in step S203), it sets the amount obtained by adding the adjustment amount mf to the reference displacement amount M as the new reference displacement amount M (step S204), and executes the correction mode. This allows pin 123a to reach the second cam surface P2 from the first cam surface P1, and the reference displacement amount M can be corrected to an appropriate value by the correction mode, in cases where pin 123a was unable to reach the second cam surface P2.

[0107] In this embodiment, the power transmission unit 100 includes a gear 105 as a first gear that transmits the gears of the PF motor 6 to the media receiving tray 5, and a gear 104 that is movable in the direction of movement of the carriage 3, disengaging from the gear 105 when the holding portion 123 is in a first position, and engaging with the gear 105 when the holding portion 123 is in a second position. The power transmission unit 100 can switch between a non-power transmission state and a power transmission state with such a simple configuration.

[0108] Furthermore, in this implementation, the driven part driven by the PF motor 6, which serves as the power source, is the media receiving tray 5. However, the driven part is not limited to the media receiving tray 5; it may be any other movable part. Furthermore, the power source is not limited to the PF motor 6; other motors may also be used.

[0109] In this embodiment, the recording device 1 also has a tray detection unit 213 that detects the position of the media receiving tray 5. The control unit 200 then determines whether the power transmission unit 100 is in a power transmission state or a power non-transmission state based on the detection information from the tray detection unit 213. This eliminates the need for a dedicated detection means to detect the state of the power transmission unit 100, thereby suppressing an increase in the cost of the device. However, it is certainly possible to provide a dedicated detection means for detecting the state of the power transmission unit 100. For example, a rotary encoder can be provided on the gear that rotates when power transmission is performed.

[0110] Alternatively, a detection means may be provided to detect the position of the pin 123a, i.e., the retaining portion 123. In this case, it is particularly preferable to provide a means to detect when the pin 123a is located on the second cam surface P2, i.e., when the retaining portion 123 is in the second position. This makes it possible to detect failure in switching from a non-power transmission state to a power transmission state. The means for detecting when the retaining portion 123 is in the second position can be a contact-type sensor that comes into contact with the retaining portion 123 when the retaining portion 123 moves to the second position, or a non-contact-type sensor. In this case, it is preferable to detect that the pin 123a is located in the center of the second cam surface P2 in the X-axis direction. This eliminates the cases where the pin 123a barely remains on the second cam surface P2, as shown in Figure 25, or where the pin 123a barely passes over the pin holding portion 122b, so step S209 in Figure 26A may be omitted.

[0111] Furthermore, as mentioned above, the correction mode is performed, for example, during the manufacturing process of the recording device 1. In this case, the correction mode may be made executable only from an external computer connected to the recording device 1. That is, it may be made impossible to execute the correction mode via the operation panel 210. However, it is certainly possible to enable the execution of the correction mode via the control panel 210.

[0112] The following describes other characteristic configurations of the recording device 1. In Figures 27 and 28, reference numeral 20 denotes the base frame that constitutes the bottom of the recording device 1. Reference numeral 21 denotes the carriage frame that supports the carriage 3. The carriage frame 21 has a vertical frame portion 21a that forms a plane parallel to the XZ plane, a horizontal frame portion 21b that forms a plane parallel to the XY plane, and a bent portion 21c that forms a plane parallel to the XZ plane. The carriage 3 moves in the X-axis direction while sliding on the horizontal frame portion 21b. Reference numeral Ac denotes the sliding region for which the carriage 3 slides.

[0113] The base frame 20 has a boss-shaped screw fixing portion 20a. The horizontal frame portion 21b has an elongated hole 21d that is long in the X-axis direction. The screw fixing portion 20a fits into the elongated hole 21d, and the screw 23 is fastened to the screw fixing portion 20a, thereby fixing the carriage frame 21 to the base frame 20. In order to securely fix the horizontal frame portion 21b with the screw 23, it is preferable to use a washer. However, if a general round washer is used, the round washer may enter the sliding region Ac and hinder the sliding of the carriage 3.

[0114] Therefore, in this embodiment, as shown in Figure 28, a fixed frame 22 is interposed between the screw 23 and the horizontal frame portion 21b. The fixed frame 22 is formed so that its edge in the +Y direction is in approximately the same position as the outer circumference of the screw 23, so as not to protrude toward the sliding region Ac. The fixed frame 22 also has a rotation-preventing portion 22a that can engage with the vertical frame portion 21a of the carriage frame 21. The rotation-preventing portions 22a are provided on both sides of the screw 23 in the X-axis direction. When the screw 23 is tightened, the torque causes the fixed frame 22 to attempt to rotate, but the rotation-preventing portions 22a contact the vertical frame portion 21a, thereby suppressing the rotation of the fixed frame 22. This properly maintains the posture of the fixed frame 22 and prevents the fixed frame 22 from entering the sliding region Ac.

[0115] The present invention is not limited to the embodiments and modifications described above, and it goes without saying that various modifications are possible within the scope of the invention as described in the claims, and these are also included within the scope of the present invention. [Explanation of Symbols]

[0116] 1…Recording device, 2…Housing, 2a…Front cover, 3…Carriage, 4…Recording head, 5…Media receiving tray, 5a…Rack, 6…Media feed (PF) motor, 6a…Motor pulley, 7…Conveyor roller, 7a…Conveyor roller pulley, 7b…Encoder scale, 8…Discharge roller, 8a…Discharge roller pulley, 9…Pulley, 10…Belt, 20…Base frame, 20a…Screw fixing part, 21…Carriage frame, 21a ...Vertical frame section, 21b...Horizontal frame section, 21c...Bent section, 21d...Slotted hole, 22...Fixed frame, 22a...Rotation stopper section, 23...Screw, 100...Power transmission section, 101...Gear, 102...Gear, 102a...Rotating shaft, 102b...Cross shape, 102c...Cylindrical area, 103...Locking part, 103a...Tooth section, 103b...Flange section, 104...Transmission part, 105...Gear, 106...Gear, 107...Gear, 108...Gear, 109...Gear, 1 10...Gear, 111...Gear, 111a...Contact part, 112...Friction forming part, 113...Gear, 114...Pinion, 120...Power switching mechanism, 121...Switching lever part, 121a...Tip part, 121b...Engaging part, 122...Cam, 122a...Cam surface, 122b...Pin holding part, 122c...Stepped part, 122d...Outer wall part, 122e...Stepped part, 122f...Cylindrical part, 123...Holding part, 123a...Pin, 123b...Engaged part, 123c...Contact part, 124...Carp 125...Elastic member, 126...Support frame, 126a...Top surface, 127...Compression spring, 130...Cam rotation shaft, 131...Cam mechanism, 200...Control unit, 201...CPU, 202...Volatile memory, 203...Non-volatile memory, 204...Program, 205...Control parameters, 207...Carriage (CR) motor, 210...Operation panel, 211...Rotary encoder, 212...Linear encoder, 213...Tray detection unit, A1...Round-trip movement range, L1...Area, L2...Turning range, L3...Area, L4...Occupied range, L5...Occupied range, L6...Occupied range P1...First cam surface, P2...Second cam surface, P3...Taxis, S1...Position

Claims

1. Power source and A power transmission unit that can switch between a power transmission state in which the power of the power source is transmitted to the driven unit and a power non-transmission state in which the power is not transmitted to the driven unit, It includes a recording unit for recording on a medium, and a carriage that is movable in a first direction intersecting the medium transport direction and in a second direction opposite to the first direction, A control unit that controls the operation of the carriage, Equipped with, The power transmission unit is A switching unit that switches from the power non-transmission state to the power transmission state by moving from a first position to a second position in the first direction relative to the first position as the carriage moves in the first direction, A cam mechanism that holds the switching section in the second position, Equipped with, The cam mechanism is, A cam having a cam surface, A cam contact portion is a part that moves integrally with the switching portion and moves while in contact with the cam surface, Equipped with, The aforementioned cam surface is The first cam surface that the cam contact portion contacts when the switching portion is in the first position, A second cam surface that holds the cam contact portion such that the switching portion is positioned in the second position, A guide path that guides the cam contact portion to the first cam surface when the cam contact portion moves away from the second cam surface in the first direction, Equipped with, The control unit is capable of executing a correction mode for correcting the reference movement amount M of the carriage for moving the switching unit from the first position to the second position. The aforementioned correction mode is, A power switching step that moves the carriage based on the aforementioned reference displacement M, If, as a result of the power switching step, the power transmission unit does not switch from the non-power transmission state to the power transmission state, a retry step is performed in which the power switching step is performed with the adjusted reference movement amount M being the amount obtained by subtracting the adjustment amount ma from the reference movement amount M. If, as a result of the retry step, the power transmission unit switches from the non-power transmission state to the power transmission state, a reference movement amount correction step is performed to maintain the amount obtained by subtracting the adjustment amount mc from the adjusted reference movement amount M as the new reference movement amount M. including, A recording device characterized by the following features.

2. In the recording device according to claim 1, The correction mode includes an adjustment step in which, as a result of the first power switching step, the power transmission unit switches from the non-power transmission state to the power transmission state, and the adjustment amount obtained by adding an adjustment amount mb to the reference movement amount M is used as the adjusted reference movement amount M to perform the power switching step. In the correction mode, if the power transmission unit does not switch from the non-power transmission state to the power transmission state as a result of the adjustment step, the control unit proceeds to the retry step. A recording device characterized by the following features.

3. In the recording device according to claim 1, In the correction mode, if the power transmission unit does not switch from the non-power transmission state to the power transmission state as a result of the retry step, the control unit repeatedly executes the retry step up to a maximum of Na. If the power transmission unit does not switch from the non-power transmission state to the power transmission state even after the retry step is performed Na times, the control unit terminates the correction mode as an error. A recording device characterized by the following features.

4. In the recording device according to claim 3, In the correction mode, if the power transmission unit does not switch from the non-power transmission state to the power transmission state even after the retry step is performed Na times, the control unit holds the most recent reference displacement M as the new reference displacement M. Furthermore, when the control unit executes the correction mode again, it compares the reference displacement amount M with a threshold Sd, and if the reference displacement amount M is less than or equal to the threshold Sd, it executes the correction mode with the amount obtained by adding an adjustment amount mf to the reference displacement amount M as the new reference displacement amount M. A recording device characterized by the following features.

5. In the recording device according to claim 1, The power transmission unit is A first gear that transmits the gears of the power source to the driven part, A gear movable in the direction of movement of the carriage, comprising a second gear which disengages from the first gear when the switching portion is in the first position, and engages with the first gear when the switching portion is in the second position, Having, A recording device characterized by the following features.

6. In a recording device according to any one of claims 1 to 5, A discharge unit for discharging the medium on which recording has been performed by the recording unit, A media receiving tray for receiving the media discharged by the discharge unit, the media receiving tray being displaceable between a storage position and a protruding position that protrudes from the storage position in the direction of media discharge, Equipped with, The driven unit is the media receiving tray. A recording device characterized by the following features.

7. In the recording device according to claim 6, It has a tray detection unit that detects the position of the media receiving tray, The control unit determines, based on the detection information from the tray detection unit, whether the power transmission unit is in the power transmission state or the power non-transmission state. A recording device characterized by the following features.

8. A control program for a recording device, The recording device is Power source and A power transmission unit that can switch between a power transmission state in which the power of the power source is transmitted to the driven unit and a power non-transmission state in which the power is not transmitted to the driven unit, It includes a recording unit for recording on a medium, and a carriage that is movable in a first direction intersecting the medium transport direction and in a second direction opposite to the first direction, A control unit that controls the operation of the carriage, Equipped with, The power transmission unit is A switching unit that switches from the power non-transmission state to the power transmission state by moving from a first position to a second position in the first direction relative to the first position as the carriage moves in the first direction, A cam mechanism that holds the switching section in the second position, Equipped with, The cam mechanism is, A cam having a cam surface, A cam contact portion is a part that moves integrally with the switching portion and moves while in contact with the cam surface, Equipped with, The aforementioned cam surface is The first cam surface that the cam contact portion contacts when the switching portion is in the first position, A second cam surface that holds the cam contact portion such that the switching portion is positioned in the second position, A guide path that guides the cam contact portion to the first cam surface when the cam contact portion moves away from the second cam surface in the first direction, Equipped with, The control program causes the computer to execute a correction mode that corrects the reference movement amount M of the carriage for moving the switching unit from the first position to the second position. The aforementioned correction mode is, A power switching step that moves the carriage based on the aforementioned reference displacement M, If, as a result of the power switching step, the power transmission unit does not switch from the non-power transmission state to the power transmission state, a retry step is performed in which the power switching step is performed with the adjusted reference movement amount M being the amount obtained by subtracting the adjustment amount ma from the reference movement amount M. If, as a result of the retry step, the power transmission unit switches from the non-power transmission state to the power transmission state, a reference movement amount correction step is performed to maintain the amount obtained by subtracting the adjustment amount mc from the adjusted reference movement amount M as the new reference movement amount M. To cause the computer to execute the above, A control program for a recording device characterized by the following features.

9. A method for controlling a recording device, The recording device is Power source and A power transmission unit that can switch between a power transmission state in which the power of the power source is transmitted to the driven unit and a power non-transmission state in which the power is not transmitted to the driven unit, It includes a recording unit for recording on a medium, and a carriage that is movable in a first direction intersecting the medium transport direction and in a second direction opposite to the first direction, A control unit that controls the operation of the carriage, Equipped with, The power transmission unit is A switching unit that switches from the power non-transmission state to the power transmission state by moving from a first position to a second position in the first direction relative to the first position as the carriage moves in the first direction, A cam mechanism that holds the switching section in the second position, Equipped with, The cam mechanism is, A cam having a cam surface, A cam contact portion is a part that moves integrally with the switching portion and moves while in contact with the cam surface, Equipped with, The aforementioned cam surface is The first cam surface that the cam contact portion contacts when the switching portion is in the first position, A second cam surface that holds the cam contact portion such that the switching portion is positioned in the second position, A guide path that guides the cam contact portion to the first cam surface when the cam contact portion moves away from the second cam surface in the first direction, Equipped with, The control method includes a correction mode for correcting the reference movement amount M of the carriage for moving the switching unit from the first position to the second position. The aforementioned correction mode is, A power switching step that moves the carriage based on the aforementioned reference displacement M, If, as a result of the power switching step, the power transmission unit does not switch from the non-power transmission state to the power transmission state, a retry step is performed in which the power switching step is performed with the adjusted reference movement amount M being the amount obtained by subtracting the adjustment amount ma from the reference movement amount M. If, as a result of the retry step, the power transmission unit switches from the non-power transmission state to the power transmission state, a reference movement amount correction step is performed to maintain the amount obtained by subtracting the adjustment amount mc from the adjusted reference movement amount M as the new reference movement amount M. including, A control method for a recording device, characterized by the following:

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