Recording device

Abstract

To provide a recording device that can stably hold a connection / disconnection state between a driving transmission mechanism and a driving transmission destination whose connection states can be switched.SOLUTION: The recording device is provided with: a driving source; a part to be driven having a gear 13 to be driven; a driving transmission mechanism 70 having a driven gear 73 that is driven by the driving source, which can oscillate between a first position at which the driving gear 73 engages with the gear 13 to be driven and a second position at which the driving gear 73 does not engage with the gear 13 to be driven; and a regulation mechanism 90 that can oscillate between a regulation position at which the mechanism regulates the driving transmission mechanism 70 from oscillating and a non-regulation position at which the mechanism does not regulate the driving transmission mechanism 70 from oscillating, where the regulation mechanism 90 can oscillate with a rotating shaft of the gear 13 to be driven as a center.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present invention relates to a recording device having a drive switching unit that utilizes a pendulum mechanism. [Background technology]

[0002] Conventionally, as a recording device such as an inkjet printer, a configuration is known in which a drive connection state or a drive connection destination can be switched by a drive switching unit constituted by a pendulum mechanism having a sun gear and a planetary gear. Patent Document 1 discloses a configuration in which the drive to a plurality of drive transmission destinations can be switched by the swing of the pendulum mechanism, and the position of the pendulum mechanism is regulated by a swingable lever. In such a configuration, when a drive gear such as a planetary gear and a driven gear of the drive transmission destination are engaged, even if the swing of the pendulum mechanism causes the planetary gear to receive a force in a direction away from the driven gear, or even if the drive gear receives a reaction force in a direction away from the driven gear, the position of the drive gear is regulated by the lever, and the axis distance between the planetary gear and the driven gear is guaranteed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2009-40575 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned configuration, the guaranteed accuracy of the center distance between the planetary gear and the driven gear is affected by the positional accuracy of the planetary gear and the driven gear and the dimensional accuracy and positional accuracy of each member that constitutes the lever and pendulum mechanism. Therefore, it is necessary to guarantee the center distance between the planetary gear and the driven gear with high accuracy and to stably maintain the drive connection state.

[0005] The present invention has been made in consideration of the above problems, and has an object to provide a recording device that can stably maintain a connection / disconnection state of a drive transmission mechanism that can switch the connection state and a drive transmission destination. [Means for solving the problem]

[0006] In order to achieve the above object, a recording device according to the present invention comprises: A driving source; a driven part having a driven gear; a drive transmission mechanism having a drive gear driven by the drive source, the drive transmission mechanism being rotatable between a first position where the drive gear meshes with the driven gear and a second position where the drive gear does not mesh with the driven gear; a restricting mechanism that is capable of swinging between a restricting position that restricts the swinging of the drive transmission mechanism and a non-restricting position that does not restrict the swinging of the drive transmission mechanism; A recording device comprising: The restriction mechanism is characterized in that it is capable of swinging about the rotation axis of the driven gear. Effect of the Invention

[0007] According to the present invention, it is possible to provide a recording apparatus capable of stably maintaining the connection / disconnection state of a drive transmission mechanism capable of switching the connection state and a drive transmission destination. [Brief description of the drawings]

[0008] [Figure 1] 1 is a perspective view showing an internal configuration of an image forming apparatus according to a first embodiment. [Diagram 2] 1 is a block diagram of an image forming apparatus according to a first embodiment. [Diagram 3] FIG. 2 is a perspective view of a drive switching unit according to the first embodiment. [Figure 4] FIG. 3 is a cross-sectional view of a planetary gear support portion of a planetary arm according to the first embodiment. [Diagram 5] 5A and 5B are diagrams illustrating the positional relationship between a carriage and a lock mechanism according to the first embodiment. [Figure 6] 5A to 5C are side views showing the operation of the locking mechanism according to the first embodiment. [Figure 7] 2 is a cross-sectional view showing the configuration of an ink suction mechanism in the first embodiment. FIG. [Figure 8] FIG. 2 is an exploded perspective view showing the configuration of a drive train according to the first embodiment. [Figure 9] FIG. 2 is a cross-sectional view showing the configuration of a drive train according to the first embodiment. [Figure 10] FIG. 2 is a diagram showing a configuration of a restriction mechanism according to the first embodiment. [Figure 11] 5A to 5C are side views showing the operation of the pendulum mechanism and the regulating mechanism according to the first embodiment. [Figure 12] 5A and 5B are diagrams illustrating a state in which a pressing means according to the first embodiment presses a pendulum mechanism. [Figure 13] FIG. 11 is a side view showing a pendulum mechanism and a driven part according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, the embodiment of the present invention will be described in detail with reference to the drawings. The dimensions, materials, shapes, and relative positions of the components described in the embodiment may be changed as appropriate depending on the configuration of the device to which the invention is applied and various conditions. In other words, the scope of the present invention is not limited to the following embodiment.

[0010] <First Example> (Image forming device) Fig. 1 is a perspective view showing the internal structure of an image forming apparatus M, which is a recording apparatus according to a first embodiment of the present invention. In the following description, as shown in Fig. 1, the direction from the left side to the right side of the image forming apparatus M is the x direction, the direction from the back to the front of the image forming apparatus M is the y direction, and the vertically upward direction is the z direction. In this embodiment, the width direction of a recording medium transported inside the image forming apparatus M is approximately parallel to the x direction, and the transport direction of the recording medium is approximately parallel to the y direction.

[0011] Image forming apparatus M is a multifunction machine equipped with a print unit and a scanner unit (not shown) arranged on the print unit, and various processes related to image recording operations and reading operations can be performed by the print unit and the scanner unit individually or in conjunction with each other. The scanner unit is equipped with an ADF (automatic document feeder) and an FBS (flatbed scanner), and can read documents automatically fed by the ADF and read (scan) documents placed on the platen of the FBS by the user. Note that while this embodiment is a multifunction machine equipped with both a print unit and a scanner unit, the present invention can be applied to other image forming apparatuses such as printers that do not have a scanner unit.

[0012] The printing unit of the image forming apparatus M includes a paper feed unit 1 on which recording media are stacked, a transport unit 3 that transports the recording media fed from the paper feed unit 1, and a recording unit 4 as a recording means that records an image on the recording media transported from the transport unit 3. The printing unit further includes a paper discharge unit 8 on which the recording media on which the image has been recorded are discharged and stacked, a maintenance unit 5 that performs maintenance on the recording head 42 of the recording unit 4, and a drive unit 6 that transmits the drive of the transport motor 31 of the transport unit 3 to the paper feed unit 1 and the maintenance unit 5.

[0013] The paper feed unit 1 includes a paper feed roller 11, and the paper feed roller 11 transports the loaded recording medium to the transport unit 3. The transport unit 3 includes a transport motor 31, which serves as a drive source and can rotate forward and backward, and a transport roller 32 driven by the transport motor 31, and the transport roller 32 transports the recording medium to an area where recording is performed by the recording unit 4.

[0014] The recording unit 4 includes a carriage 41, a recording head 42 held by the carriage 41, The image forming apparatus M includes a carriage motor 43 that drives the carriage 41, and a chassis 44 that extends from one end to the other end in the x direction within the image forming apparatus M and holds the carriage 41. The carriage 41 is capable of reciprocating scanning in the x direction along the chassis 44, and performs a recording operation on a recording medium while moving in the x direction.

[0015] The paper discharge unit 8 includes a loading unit 8a for loading recording media, and an extension tray 8b that can be pulled out toward the image forming apparatus M so as to support the recording media when the size of the recording media is large in the y direction.

[0016] The maintenance unit 5 includes a mechanism for bringing the suction cap into contact with the recording head 42, and a suction mechanism for sucking ink from the ink ejection ports of the recording head 42 using a tube pump. The image forming apparatus M is also provided with a locking mechanism for locking the carriage 41 at a position where the suction cap is brought into contact with the recording head 42. The locking mechanism stably holds the recording head 42 in a capped state, and restricts the movement of the carriage 41 during transportation. The configuration for holding the position of the carriage 41 with the locking mechanism will be described later in detail.

[0017] All of the above-mentioned units constituting the print section are fastened to the main body base 7. In addition, a circuit board (not shown) that controls the operations of these units is positioned and held by the main body base 7 and the chassis 44.

[0018] (Printing operation) 2 is a block diagram of the image forming apparatus M of this embodiment. The image forming apparatus M includes an MPU 901, a ROM 902, and a RAM 903. The MPU 901 is an MPU that controls the operation of each unit and data processing. The ROM 902 is a ROM that stores programs and data executed by the MPU 901, and includes an image processing unit 9021. The RAM 903 is a RAM that temporarily stores processing data executed by the MPU 901 and data received from a host computer 906.

[0019] The image forming apparatus M further includes a printhead driver 942 that controls the printhead 42, a carriage motor driver 943 that controls the carriage motor 43, and a transport motor driver 931 that controls the transport motor 31. The MPU 901 controls the printhead driver 942, the carriage motor driver 943, the transport motor driver 931, and also an operation display unit 904. The carriage 41 is driven by the carriage motor 43, and the paper feed roller 11, the transport roller 32, and the discharge roller are driven by the transport motor 31.

[0020] The host computer 906 has a printer driver 9061 for processing recording information such as a recorded image and image quality and communicating with the image forming apparatus when a user commands the host computer 906 to execute a recording operation. The MPU 901 exchanges recorded images and the like with the host computer 906 via an I / F unit 905.

[0021] (Drive unit) Next, the configuration of the drive unit 6 of the first embodiment will be described with reference to Figures 3 and 4. Figure 3 is a perspective view showing the configuration of a drive switching unit disposed in the drive unit 6.

[0022] The input gear 61 is connected to the transport motor 31, which is a drive source, via a drive train (not shown), the transport roller 32, and an idler gear 69, and rotates as the transport motor 31 is driven. In addition, the drive switching unit has a pendulum mechanism 70, which is composed of a planetary arm 71, a sun gear 72, and a planetary gear 73, as a drive transmission mechanism for transmitting the driving force of the transport motor 31.

[0023] The planetary arm 71 has the shaft of the input gear 61 inserted therethrough and is pressed against the shaft of the input gear 61 by a friction spring (not shown). Therefore, when the input gear 61 rotates, the planetary arm 71 swings coaxially with the rotation shaft 61c of the input gear 61 by friction drive. The planetary arm 71 also has a cylindrical shaft support 71a extending parallel to the rotation shaft 61c, and a first restriction portion 71b for restricting the swing of the planetary arm 71.

[0024] The sun gear 72 has a shaft portion of the input gear 61 inserted therethrough and is engaged with an engagement portion of the input gear 61. Therefore, when the input gear 61 rotates, the sun gear 72 is rotated coaxially with the rotation shaft 61c of the input gear 61. In other words, the sun gear 72 is always drivingly connected to the input gear 61.

[0025] The planetary gear 73 is supported by the planetary arm 71 so as to be rotatable about a rotation shaft 73a that is parallel to the rotation shaft 61c of the input gear 61. The planetary gear 73 is constantly engaged with the sun gear 72, and receives a driving force from the sun gear 72.

[0026] The support portion of the planetary gear 73 of the planetary arm 71 will be described in more detail with reference to Fig. 4. Fig. 4 is a cross-sectional view of the pendulum mechanism 70 seen from a direction perpendicular to the rotation shaft 73a, showing how the planetary arm 71 supports the planetary gear 73. The planetary arm 71 is provided to sandwich the planetary gear 73 in the axial direction of the planetary gear 73, and the shaft portion 73b of the planetary gear 73 is inserted into the inner diameter of the support portion 71a of the planetary arm 71. The inner diameter and the outer diameter of the support portion 71a are concentric, and the shaft portion of the planetary gear 73 is supported on the inner diameter side, so that the center of the outer diameter and the center of the inner diameter of the support portion 71a are positioned on the rotation shaft 73a of the planetary gear 73.

[0027] In the image forming apparatus M of this embodiment, the pendulum mechanism 70 configured as described above can swing the planetary arm 71 to switch between a state in which the planetary gear 73 is connected to the next gear (driven gear) and a state in which the planetary gear 73 is separated from the next gear and disconnected.

[0028] (locking mechanism) Next, the lock mechanism 80 that locks the carriage 41 carrying the recording head 42 at the capping position will be described with reference to Figures 5(a), (b) and 6(a) and (b). Figure 5(a) is a perspective view showing the positional relationship between the carriage 41 and the lock mechanism 80, and Figure 5(b) is a top view thereof. Figure 6(a) is a side view showing the carriage 41 and the lock mechanism 80 when the lock mechanism 80 is in a non-operating position where it does not lock the carriage 41. Figure 6(b) is a side view showing the carriage 41 and the lock mechanism 80 when the lock mechanism 80 is in an operating position where it locks the carriage 41.

[0029] The carriage 41 has a pressing portion 41a for restricting the swing of the planetary arm 71, a contact portion 41b that contacts the lock mechanism 80 when the lock mechanism 80 is in the operating position, and a contact portion 41c that contacts the chassis end portion 44a. When a recording operation is performed on a recording medium, the carriage 41 moves in a scanning manner in the direction of an arrow 411 shown in Figures 5(a) and (b). On the other hand, in order to prevent the carriage 41 from moving unintentionally during distribution, etc., the carriage 41 is locked by the lock mechanism 80 and its movement is restricted.

[0030] The lock mechanism 80 includes a drive member 82 and a lever member 83. The drive member 82 is engaged with the input gear 61, and is a rotating member that can rotate coaxially with a rotation axis 61c of the input gear 61 and in the same direction as the input gear 61 when the input gear 61 rotates due to frictional force acting between the drive member 82 and the input gear 61. The drive member 82 includes a cylindrical link portion 82a that protrudes in the rotation axis direction at a position different from the rotation axis, and when the drive member 82 rotates, the link portion 82a performs a circular motion around the rotation axis 61c.

[0031] The lever member 83 has a cam portion 83a that engages with the link portion 82a, and an engagement portion 83b that abuts against the carriage 41 to regulate the scanning of the carriage 41, and is configured to be swingable about a swing shaft 83c that is different from the driving member 82. When the driving member 82 rotates, the link portion 82a makes a circular motion, and the link portion 82a slides on the cam portion 83a, thereby transmitting a driving force to the lever member 83, and the lever member 83 swings around the swing shaft 83c while being regulated by the cam portion 83a.

[0032] The driving member 82 is connected to the transport roller 32 via members such as the input gear 61. When the transport roller 32 is driven in the forward direction (the direction in which the recording medium is transported to the discharge roller side), as shown in FIG. 6A, the link portion 82a moves as the driving member 82 swings in the direction of the arrow 822. Then, the lever member 83 swings in the direction of the arrow 832 around the swing shaft 83c, and the engaging portion 83b of the lever member 83 moves to a position where it does not restrict the movement of the carriage 41 in the scanning direction (the direction of the arrow 411), and the lever member 83 moves to a non-operating position (retracted side). In other words, when the lever member 83 retreats from the scanning path of the carriage 41 and is positioned at the non-operating position, the engagement between the locking mechanism 80 and the carriage 41 is released, the locking mechanism 80 is in an inoperative state, and the carriage 41 can reciprocate in the scanning direction.

[0033] When the conveying roller 32 is driven in the reverse direction (opposite to the forward direction), as shown in FIG. 6B, the link portion 82a moves as the driving member 82 swings in the direction of the arrow 821. Then, the lever member 83 swings around the swing shaft 83c in the direction of the arrow 831, and the engagement portion 83b enters a position on the scanning path of the carriage 41 where the scanning movement is blocked. When the lever member 83 is located in the operating position where the movement of the carriage 41 is restricted, the chassis end portion 44a is located on one side of the scanning direction of the carriage 41 and the engagement portion 83b is located on the other side, so that the movement of the carriage 41 in the scanning direction is restricted. At this time, even if a force is applied to the carriage 41, the abutment portion 41c of the carriage 41 on one side abuts against the chassis end portion 44a, and the abutment portion 41b of the carriage 41 on the other side abuts against the engagement portion 83b, so that the movement from that position is restricted. In this manner, by holding the carriage 41 at a predetermined position with the lock mechanism 80, damage to the carriage 41 during transportation and the suction caps coming off the recording heads 42 can be prevented.

[0034] (Ink suction mechanism) Next, the ink suction mechanism 50 that sucks liquid from the ink ejection ports of the recording head 42 will be described with reference to Fig. 7. Fig. 7 is a cross-sectional view showing the configuration of the ink suction mechanism 50.

[0035] The ink suction mechanism 50 is a suction mechanism including a roller holder 51, a pump roller 52, a pump base 53, and a pump tube 54. The pump base 53 has an arc-shaped wall surface, and two pump tubes 54 are arranged along the wall surface. The pump tubes 54 are connected to the recording head 42 via a storage means and a suction cap, respectively, and the sucked liquid passes through the inside. The roller holder 51 is a rotating member located inside the arc-shaped wall surface of the pump base 53 and rotatably supported by the pump base 53. The roller holder 51 has a guide shape 51b that holds the three pump rollers 52 movably and rotatably. The recording head 42 of this embodiment is capable of ejecting four colors of ink, namely black, cyan, magenta, and yellow, and one of the pump tubes 54 of the ink suction mechanism 50 is a transport path for black ink, and the other is a transport path for the remaining colors of ink.

[0036] 7, when the roller holder 51 rotates counterclockwise, each pump roller 52 moves radially outward along the guide shape 51b provided on the roller holder 51, and enters a charged state in which the pump tube 54 is crushed, and becomes capable of sucking liquid. When the roller holder 51 continues to rotate further, the pump roller 52 moves in the rotation direction of the roller holder 51 while crushing the pump tube 54. Therefore, the ink suction mechanism 50 is a pump The gas and liquid inside the tube 54 can be pumped out in the direction of rotation of the roller holder 51, and the sucked liquid can be transported to a storage means.

[0037] When the roller holder 51 rotates clockwise, each pump roller 52 moves radially inward along the guide shape 51b provided on the roller holder 51 and separates from the pump tube 54, releasing the charge to the pump tube 54. When the roller holder 51 continues to rotate further, the pump rollers 52 move in the rotation direction of the roller holder 51 while separated from the pump tube 54. Therefore, the gas or liquid inside the pump tube 54 is not transported to the recording head 42. With this configuration, the ink suction mechanism 50 of this embodiment can switch between suction and non-suction depending on the rotation direction of the roller holder 51.

[0038] (Drivetrain) Next, the details of the configuration of the drive train connected to the input gear 61 will be described with reference to Fig. 8, Fig. 9(a) and Fig. 9(b). Fig. 8 is an exploded perspective view showing the arrangement of the parts that make up the drive train. Fig. 9(a) and Fig. 9(b) are cross-sectional views of the parts shown in Fig. 8, taken along a plane including the rotation axis of the input gear 61. Fig. 9(a) is a cross-sectional view of a plane including the rotation axis 61c of the input gear 61, showing the state when the parts that make up the drive train are engaged with each other. Fig. 9(b) is an exploded view of Fig. 9(a).

[0039] The input gear 61 has a cylindrical shaft portion protruding on both sides in the rotation axis direction, and has a shaft portion that functions as an input shaft for driving other members by the driving force of the conveying motor 31, which is a driving source. On the outer peripheral surface and inner peripheral surface of the shaft portion, fitting shafts 61d, 61e, 61f, and 61g and fitting holes 61h for fitting with each component of the driving unit are provided. The fitting shaft 61d and the fitting hole 61h are located at the end of the input gear 61 in the rotation axis direction, and a cylindrical portion in which the fitting shaft 61d and the fitting hole 61h are formed is provided at the end of the shaft portion. The cross-sectional shape of each fitting portion of the input gear 61 is approximately circular with the rotation shaft 61c of the input gear 61 as the center. On one end side of the axial direction of the input gear 61, a cover member 68, a roller holder 51, and a pump base 53 are attached in order from the side closest to the input gear 61. Further, to the other end side of the input gear 61 in the axial direction, a planetary arm 71, a base member 67, a driving member 82, and a lever member 83 are attached in this order from the side closest to the input gear 61.

[0040] The base member 67 is a support member that supports other members constituting the drive train and serves as a foundation for the drive train, and is connected to the main body base 7. The base member 67 has a fitting hole 67d through which the fitting shaft 61d of the input gear 61 is inserted.

[0041] The cover member 68 is a support member that supports other members that configure the drive train, similar to the base member 67, and is attached to the base member 67. The cover member 68 also has a fitting hole 68e through which the fitting shaft 61e of the input gear 61 is inserted.

[0042] The input gear 61 has a fitting shaft 61d protruding in one axial direction inserted into a fitting hole 67d, and a fitting shaft 61e protruding in the other axial direction inserted into a fitting hole 68e. That is, the input gear 61 is supported by a base member 67 and a cover member 68, which are supporting members, from both axial ends to be rotatable about a rotation shaft 61c of the input gear 61.

[0043] The planetary arm 71 has a fitting hole 71f through which the fitting shaft 61f of the input gear 61 is inserted, and a fitting hole 71g through which the fitting shaft 61g is inserted. The planetary arm 71 is held by the input gear 61 to be swingable around the rotation shaft 61c of the input gear 61.

[0044] The sun gear 72 has a fitting hole 72f into which the fitting shaft 61f of the input gear 61 is inserted, and is held by the input gear 61 to be rotatable about the rotation shaft 61c of the input gear 61.

[0045] The planetary arm 71 , the sun gear 72 , and the planetary gear 73 supported by the planetary arm 71 are disposed between a base member 67 that axially supports the input gear 61 and a cover member 68 .

[0046] The driving member 82 has a link portion 82a, a link forming portion 82b, and a substantially cylindrical shaft portion 82c which is a rotation shaft portion of the driving member 82. A fitting shaft 82h is formed on the shaft portion 82c of the driving member 82, and the fitting shaft 82h is inserted into the fitting hole 61h of the input gear 61. That is, the driving member 82 is supported by a cylindrical portion of the input gear 61 which has a fitting shaft 61d on its outer diameter and a fitting hole 61h on its inner diameter. When the driving member 82 and the input gear 61 are fitted together, the base member 67 is sandwiched between the driving member 82 and the input gear 61. At this time, the link forming portion 82b is located on the opposite side of the input gear 61 with respect to the base member 67. The shaft portion 82c of the driving member 82 is pressed against the input gear 61 by a friction spring (not shown), and when the input gear 61 rotates, the shaft portion 82c rotates coaxially with the rotation shaft 61c of the input gear 61 due to frictional force. When the driving member 82 rotates, the link portion 82a on the link forming portion 82b comes into contact with and slides against a cam portion 83a provided on the lever member 83, and the lever member 83 is driven.

[0047] An engaging portion 61a that engages with the engaged portion 51a of the roller holder 51 is provided on the shaft portion of the input gear 61 on the cover member 68 side. The roller holder 51 is disposed so that the center of rotation of the roller holder 51 is located on a rotation shaft 61c of the input gear 61. When the input gear 61 rotates, the engaging portion 61a engages with the engaged portion 51a, and driving force is transmitted from the input gear 61 to the roller holder 51. The pump base 53 supports the rotating shaft portion of the roller holder 51, and is attached to the cover member 68.

[0048] As described above, in this embodiment, the rotation centers of the pendulum mechanism that switches the drive, the drive unit of the lock mechanism that regulates the position of the carriage, and the roller holder that is the drive unit of the ink suction mechanism are located on the rotation axis 61c of the input gear 61. This eliminates the need to provide separate input gears for the respective drive input units, and allows a common input gear to be used, thereby reducing the number of parts of the image forming apparatus M, saving space, and making it smaller.

[0049] (Regulatory Body) Next, the configuration of the drive switching unit and the holding means for holding the connected / disconnected state of the drive of this embodiment will be described with reference to Figs. 10(a)-(c). The holding means of this embodiment is constituted by a restriction mechanism 90 for restricting the swing of the pendulum mechanism 70. Fig. 10(a) is a perspective view showing the configuration of the restriction mechanism 90 and peripheral members. Fig. 10(b) is an exploded perspective view showing the configuration of the restriction mechanism 90 and peripheral members. Fig. 10(c) is a side view showing the state in which the restriction mechanism 90 restricts the swing of the pendulum mechanism 70 and the holding means holds the drive connected state.

[0050] The regulating mechanism 90 includes a planetary arm lock 91, which is a regulating member capable of regulating the swing of the pendulum mechanism 70, and a paper feed gear base 95 that supports the planetary arm lock 91. The paper feed gear base 95 of this embodiment further supports a drive train of the paper feed unit 1 including the paper feed input gear 13. The paper feed input gear 13 is provided at a position where it can mesh with the planetary gear 73, and the driving force of the input gear 61 is transmitted via the planetary gear 73 and the sun gear 72.

[0051] The paper feed gear base 95 has cylindrical mating shafts 95c, 95d, and 95e, and each mating portion is concentric. The paper feed input gear 13 is the end gear of the drive train that transmits drive to the paper feed section 1, and has a mating hole 13d. The paper feed input gear 13 is rotatably supported by the paper feed gear base 95 by inserting the mating shaft 95d into the mating hole 13d. The paper feed input gear 13 is provided on the swing trajectory of the planetary gear 73 of the pendulum mechanism 70 of the drive switching section, and the driving force transmitted from the planetary gear 73 is transmitted via the paper feed input gear 13 to the paper feed section 1, which is the driven section. do.

[0052] The planetary arm lock 91 has a fitting hole 91c through which the fitting shaft 95c is inserted and a fitting hole 91e through which the fitting shaft 95e is inserted, and is pivotally supported by the paper feed gear base 95 so as to be swingable. That is, the rotation shaft of the paper feed input gear 13 and the swing shaft of the planetary arm lock 91 are on the same axis. The planetary arm lock 91 engages with the paper feed gear base 95 so as to sandwich the paper feed input gear 13 and the paper feed gear base 95. The planetary arm lock 91 of this embodiment is made of a resin material, and can be engaged with the paper feed gear base 95 by being bent.

[0053] The planetary arm lock 91 further has two arms 91f extending in a direction perpendicular to the rotation axis direction on both sides of the paper feed gear base 95 in the rotation axis direction of the planetary arm lock 91, and protrusions 91g protruding in a direction perpendicular to the rotation axis direction at the tip of each arm 91f. A first holding portion 91a, which is a first surface for regulating the swing of the pendulum mechanism 70, and a second holding portion 91b, which is a second surface, are formed on the protrusions. The first holding portion 91a and the second holding portion 91b in this embodiment are flat surfaces facing in opposite directions.

[0054] The planetary arm lock 91 can swing between a position where the protrusion 91g is located on the swing trajectory of the planetary arm 71 and restricts the swing of the planetary arm 71, and a position where the protrusion 91g is retracted from the swing trajectory of the planetary arm 71 and allows the planetary arm 71 to swing. An end portion of the planetary arm lock 91 opposite to the end portion where the protrusion 91g is provided is connected to a planetary arm lock lever 92. The planetary arm lock lever 92 is a member for swinging the planetary arm lock 91. The swinging movement of the planetary arm lock 91 caused by the swinging of the planetary arm lock lever 92 will be described in detail later.

[0055] In this embodiment, as shown in Fig. 10(c), when the planetary gear 73 and the paper feed input gear 13 are connected, the axis distance between the planetary gear 73 and the paper feed input gear 13 is a distance d. When the planetary gear 73 and the paper feed input gear 13 are connected, as viewed from the direction of the rotation axis of the planetary arm lock 91, a straight line connecting the rotation centers of the planetary gear 73 and the paper feed input gear 13 and a straight line connecting the swing center of the planetary arm 71 and the rotation center of the planetary gear 73 are perpendicular to each other. By disposing the parts in this manner, the extension direction of the straight line connecting the rotation centers of the planetary gear 73 and the paper feed input gear 13 coincides with the tangent direction of the swing locus when the planetary gear 73 separates from the paper feed input gear 13, so that the variation in the axis distance due to the dimensional accuracy of the parts can be reduced.

[0056] (Drive switching operation) Next, the operation of the drive switching unit and the holding means for holding the drive connected / disconnected state of this embodiment will be described with reference to Figures 11(a) to (d) and Figures 12(a) and (b). Figures 11(a) to (d) are views of the pendulum mechanism 70 and the regulating mechanism 90 as viewed from the direction of the swing center of the planetary arm 71.

[0057] As described above, the pendulum mechanism 70 can switch the connection state between the planetary gear 73 and the paper feed input gear 13 (driven gear) by the swing of the planetary arm 71. In the following description, the position of the pendulum mechanism 70 where the planetary gear 73 meshes with and is connected to the paper feed input gear 13 is referred to as a first position, and the position of the pendulum mechanism 70 where the planetary gear 73 is separated from the paper feed input gear 13 and is disconnected is referred to as a second position. In addition, the regulating mechanism 90 can be switched between a state where the swing of the planetary arm 71 is regulated and a state where the regulating mechanism 90 is not regulated by the swing of the planetary arm lock 91. In the following description, the position of the regulating mechanism 90 where the planetary arm lock 91 regulates the swing of the planetary arm 71 to hold the position of the pendulum mechanism 70 is referred to as a regulating position, and the position of the regulating mechanism 90 where the planetary arm lock 91 does not regulate the swing of the planetary arm 71 is referred to as a non-regulating position.

[0058] FIG. 11(a) shows a state in which the pendulum mechanism 70 is in the second position and the restriction mechanism 90 is in the restriction position. 11A shows a state in which the planetary gear 73 is in a position separated from the paper feed input gear 13, and the connection between the planetary gear 73 and the paper feed input gear 13 is cut off. Also, the second holding portion 91b of the planetary arm lock 91 abuts against the pivot portion 71a of the planetary arm 71, and the swinging locus of the planetary arm 71 in the direction in which the planetary gear 73 approaches the paper feed input gear 13 (counterclockwise direction in FIG. 11A) is blocked. Furthermore, the swinging locus of the planetary arm 71 in the direction in which the planetary gear 73 moves away from the paper feed input gear 13 (clockwise direction in FIG. 11A) is blocked by the second abutment portion 67a provided on the base member 67. That is, the base member 67 having the second abutment portion 67a also functions as a second regulating member that regulates the swinging of the pendulum mechanism 70.

[0059] With the above-mentioned configuration, when the pendulum mechanism 70 is in the second position, the swing of the pendulum mechanism 70 is restricted by the second holding portion 91b of the planetary arm lock 91 and the second abutment portion 67a of the base member 67, and the position of the pendulum mechanism 70 is maintained. Therefore, even if a force that swings the planetary arm 71 acts as the input gear 61 rotates, the planetary gear 73 can be maintained at a position separated from the paper feed input gear 13. Note that when the pendulum mechanism 70 is in the second position and the regulating mechanism 90 is in the regulating position, the second holding portion 91b does not necessarily need to abut against the shaft support portion 71a, and a gap may be provided.

[0060] Fig. 11(b) shows a state where the pendulum mechanism 70 is in the first position and the regulating mechanism 90 is in the non-regulating position. Next, an operation will be described where the regulating mechanism 90 swings from the regulating position to the non-regulating position, the pendulum mechanism 70 swings from the second position to the first position, and the image forming apparatus M transitions from the state shown in Fig. 11(a) to the state shown in Fig. 11(b).

[0061] First, the operation of the regulating mechanism 90 to swing from the regulating position to the non-regulating position will be described. Figures 12(a) and 12(b) are cross-sectional views of the carriage 41 and the planetary arm lock lever 92 as viewed in the vertical direction (z direction). Figure 12(a) shows a state in which the carriage 41 is in the non-pressing position, the carriage 41 is separated from the planetary arm lock lever 92, and the regulating mechanism 90 is in the regulating position. Figure 12(b) shows a state in which the carriage 41 is in the pressing position, the carriage 41 is in contact with the planetary arm lock lever 92, and the regulating mechanism 90 is in the non-regulating position. The carriage 41 has a pressing portion 41a that protrudes in a trapezoidal shape toward the planetary arm lock lever 92 when viewed in the vertical direction, and the planetary arm lock lever 92 abuts against the inclined portion of the pressing portion 41a as the carriage 41 moves in the scanning direction (x direction). When the carriage 41 moves further, the planetary arm lock lever 92 swings while sliding against the pressing portion 41a, and when the carriage 41 moves to a predetermined drive switching position, the planetary arm lock lever 92 is pressed against the tip surface of the pressing portion 41a. When the planetary arm lock lever 92 is pressed and swings, the planetary arm lock 91 swings counterclockwise in FIG. 11(b), and the regulating mechanism 90 moves to a non-regulating position that does not regulate the swing of the pendulum mechanism 70. With this configuration, the carriage 41, which is the recording means, functions as the pressing means, and there is no need to provide a separate drive source or member for switching the position of the planetary arm lock 91. As a result, the number of parts of the image forming apparatus M can be reduced, and space and size can be saved.

[0062] Next, the operation of the pendulum mechanism 70 to swing from the second position to the first position will be described. The pendulum mechanism 70 can swing from the second position to the first position when the regulating mechanism 90 moves to the non-regulating position and the planetary arm lock 91 is in a state where it does not regulate the swing of the planetary arm 71. As described above, the input gear 61 is connected to the conveying roller 32 via another member. Therefore, when the conveying roller 32 rotates by the driving force of the conveying motor 31, in addition to the input gear 61, the planetary arm 71 abutting against the input gear 61 also swings. In this embodiment, when the conveying motor 31 is driven in the first direction so that the conveying roller 32 rotates in a direction to convey the recording medium to the discharge roller side, the planetary arm 71 swings in a direction from the second position to the first position (counterclockwise direction in FIG. 11(b)). Then, when the pendulum mechanism 70 is located at the first position, the axial distance between the planetary gear 73 and the paper feed input gear 13 becomes the shortest distance d, and the first regulating portion 71b The sheet feed gear base 95 abuts against the first contact portion 95 a. That is, the sheet feed gear base 95 having the first contact portion 95 a also functions as a first restricting member that restricts the swing of the pendulum mechanism 70. Then, the swing of the planetary arm 71 in the relevant direction is restricted, and the planetary gear 73 and the sheet feed input gear 13 mesh with each other.

[0063] Fig. 11(c) shows a state in which the pendulum mechanism 70 is in the first position and the regulation mechanism 90 is in the regulation position. Next, an operation in which the regulation mechanism 90 swings from the non-regulation position to the regulation position and the image forming apparatus M transitions from the state in Fig. 11(b) to the state in Fig. 11(c) will be described.

[0064] When the carriage 41 retreats from the drive switching position and the pressing portion 41a separates from the planetary arm lock lever 92, the planetary arm lock lever 92 swings in the counterclockwise direction in FIG. 11(c) due to the restoring force of a spring (not shown). That is, the planetary arm lock lever 92 is always biased in that direction by a biasing member. Then, with the swinging of the planetary arm lock lever 92, the planetary arm lock 91 swings to the restriction position, and the first holding portion 91a moves to a position where it blocks the swing trajectory of the planetary gear 73. The first holding portion 91a is provided at a position where it abuts against the outer diameter of the shaft support portion 71a of the planetary gear 73 of the planetary arm 71 when the axial distance between the paper feed input gear 13 and the planetary gear 73 becomes the longest in a predetermined range. With this configuration, the planetary arm 71 is held by the first contact portion 95a and the first holding portion 91a so that the axial distance between the planetary gear 73 and the paper feed input gear 13 is within a predetermined range, and the pendulum mechanism 70 is held at the first position. The first holding portion 91a and the pivot portion 71a are provided on both axial sides of the planetary arm lock 91 and the planetary arm 71, and the swing of the planetary arm 71 is restricted on both axial sides. When the pendulum mechanism 70 is in the first position and the restriction mechanism 90 is in the restriction position, the first holding portion 91a does not necessarily need to abut against the pivot portion 71a, and a gap may be provided within a range that does not affect the drive transmission from the planetary gear 73 to the paper feed input gear 13.

[0065] With this configuration, the axial distance between the planetary gear 73 and the paper feed input gear 13 is guaranteed, so that the connection state is stable and stable drive transmission is possible. In particular, since the planetary arm lock 91 that regulates the oscillation of the pendulum mechanism 70 including the planetary gear 73 oscillates around the rotation axis of the paper feed input gear 13, the axial distance can be guaranteed with higher accuracy than when the oscillation axis of the regulating mechanism and the rotation axis of the driven gear are not concentric. This is because there are fewer factors such as the dimensional accuracy and positional accuracy of each member that affect the axial distance. Furthermore, according to the present invention, even when a drive unit that utilizes the rotation of the driven gear in both the forward and reverse directions is driven by a pendulum mechanism, the axial distance between the driven gear and the drive gear is guaranteed, and stable drive transmission is possible.

[0066] Fig. 11(d) shows a state where the pendulum mechanism 70 is in the second position and the regulating mechanism 90 is in the non-regulating position. Next, the operation where the pendulum mechanism 70 swings from the first position to the second position and the image forming apparatus M transitions from the state shown in Fig. 11(c) to the state shown in Fig. 11(d) will be described. Note that the operation where the planetary arm lock lever 92 and the planetary arm lock 91 rotate with the movement of the carriage 41, and the regulating mechanism 90 swings from the non-regulating position to the regulating position is as described above.

[0067] When the conveying motor 31 is driven in a second direction opposite to the first direction, the input gear 61 and the planetary arm 71 swing clockwise in FIG. 11(d), and the planetary gear 73 moves to a second position at a predetermined distance from the paper feed input gear 13. In this embodiment, the shaft support portion 71a of the planetary arm 71 also functions as a second regulating portion that abuts against the second abutting portion 67a of the base member 67, but a regulating portion that abuts against the second abutting portion 67a instead of the shaft support portion 71a may be provided separately. Then, when the pendulum mechanism 70 is located at the second position, the axis distance between the planetary gear 73 and the paper feed input gear 13 becomes the longest distance, and the shaft support portion 71a abuts against the second abutting portion 67a. Then, the swing of the planetary arm 71 is regulated, and the position of the pendulum mechanism 70 is maintained.

[0068] 11(d) to the state of FIG. 11(a), the operation of the regulating mechanism 90 moving from the non-regulating position to the regulating position is as described above. By the regulating mechanism 90 moving to the regulating position, the planetary arm 71 is held by the second abutment portion 67a and the second holding portion 91b so that the axis distance between the planetary gear 73 and the paper feed input gear 13 is within a predetermined range, and the pendulum mechanism 70 is held at the second position.

[0069] As described above, according to this embodiment, the axial distance between the planetary gear of the pendulum mechanism and the next-stage gear connected to the planetary gear is precisely maintained, and unintentional disconnection of the connection is suppressed, enabling stable drive transmission.

[0070] <Second Example> A second embodiment of the present invention will be described with reference to Fig. 13. The second embodiment differs from the first embodiment in that the planetary gear 73 can transmit driving force to other parts in addition to the paper feeder 1, and has a plurality of driven parts. In the following description of the second embodiment, the description of the same configuration as the first embodiment will be omitted, and only the characteristic configuration of the second embodiment will be described.

[0071] 13 is a view of the pendulum mechanism 70 and the regulating mechanism 90 of this embodiment seen from the direction of the swing center of the planetary arm 71, and shows a state in which the planetary gear 73 is connected to the recovery input gear 96. The planetary gear 73 of this embodiment is connected to the recovery input gear 96 when the pendulum mechanism 70 is in the second position. The recovery input gear 96 is journaled on a shaft portion (not shown) provided on the base member 67. The recovery input gear 96 is an end gear that transmits drive to a recovery unit that maintains the surface condition of the liquid ejection portion of the recording head in good condition via a drive train (not shown).

[0072] When the pendulum mechanism 70 is in the second position, the planetary gear 73 is spaced a predetermined distance from the paper feed input gear 13, and the driving force is transmitted only from the planetary gear 73 to the recovery input gear 96. At this time, the second holding portion 91b of the planetary arm lock 91 blocks the swing trajectory of the planetary arm 71, and the position of the pendulum mechanism 70 is restricted so that the axial distance between the planetary gear 73 and the recovery input gear 96 does not deviate from a predetermined range. In other words, even if a force acts on the planetary gear 73 in a direction in which the planetary gear 73 moves away from the recovery input gear 96, the shaft support portion 71a abuts against the second holding portion 91b, and the swing of the planetary arm 71 is restricted, so that the connection between the planetary gear 73 and the recovery input gear 96 can be prevented from being cut off.

[0073] In this embodiment, the pendulum mechanism is configured to selectively transmit driving force to the first driven part as the paper feeding part and the second driven part as the recovery unit, but when applying the present invention, the driving force may be transmitted to another unit.

[0074] <Effects of the present invention> The effects obtained by the above-described configuration will be described in more detail. The planetary arm lock 91 is configured to be swingable around the rotation axis of the paper feed input gear 13. When the pendulum mechanism 70 is in the first position, the planetary arm lock 91 restricts the planetary arm 71 from swinging in a direction in which the planetary gear 73 moves away from the paper feed input gear 13 at the first holding portion 91a. With this configuration, even if a force acts on the planetary gear 73 in a direction in which the planetary gear 73 moves away from the paper feed input gear 13 or the pendulum mechanism 70 swings the planetary gear 73 in a direction in which the planetary gear 73 moves away from the paper feed input gear 13, the variation in the axis distance between the planetary gear 73 and the paper feed input gear 13 can be kept small. In particular, compared to a configuration in which the swing axis of the planetary arm lock 91 and the rotation axis of the paper feed input gear 13 are not concentric, the axis distance can be guaranteed with high accuracy, so that the connection state between the planetary gear 73 and the paper feed input gear 13 is stable, and stable drive transmission is possible.

[0075] When the pendulum mechanism 70 is in the second position, the planetary arm lock 91 is in contact with the second holding portion 9 1b restricts the planetary arm 71 from swinging in a direction in which the planetary gear 73 approaches the paper feed input gear 13. With this configuration, even if a force acts on the planetary gear 73 in a direction in which the planetary gear 73 approaches the paper feed input gear 13 when the planetary gear 73 is not connected to the paper feed input gear 13, the drive disconnection state is stably maintained. Furthermore, since the planetary gear 73 can be prevented from unintentionally approaching the paper feed input gear 13, the distance between the planetary gear 73 and the paper feed input gear 13 can be kept small. And, compared to a configuration in which the swing shaft of the planetary arm lock 91 and the rotation shaft of the paper feed input gear 13 are not concentric, the distance can be guaranteed with high accuracy. Furthermore, since it is not necessary to greatly separate the planetary gear 73 from the paper feed input gear 13, it is possible to set the swing range of the planetary arm 71 to be small, and the size of the drive switching unit can be reduced.

[0076] Furthermore, as shown in the second embodiment, even in a configuration in which the drive switching unit has two drive transmission destinations, the axial distance between the planetary gear 73 and the recovery input gear 96 can be precisely guaranteed, the connection state between the planetary gear 73 and the recovery input gear 96 is stable, and stable drive transmission is possible.

[0077] Moreover, the pendulum mechanism 70 of this embodiment is a pendulum mechanism composed of two gears, a sun gear 72 and a planetary gear 73. Therefore, since the number of gears of the pendulum mechanism is minimized, according to the present invention, it is possible to suppress a decrease in the efficiency of the drive transmission, and to suppress the twisting of the planetary arm 71, thereby enabling a more stable drive transmission.

[0078] In the above embodiment, when the planetary gear 73 is connected to the paper feed input gear 13, a straight line connecting the rotation center of the planetary gear 73 and the rotation center of the paper feed input gear 13 is perpendicular to a straight line connecting the swing center of the planetary arm 71 and the rotation center of the planetary gear 73. With this configuration, the extension direction of the straight line connecting the rotation center of the planetary gear 73 and the rotation center of the paper feed input gear 13 coincides with the swing direction of the planetary gear 73, and the effect of the planetary arm lock 91 in suppressing fluctuations in the axis distance between the planetary gear 73 and the paper feed input gear 13 is enhanced.

[0079] In the above embodiment, the journal portion 71a, which supports the planetary gear 73 and also functions as the regulated portion, abuts against the first holding portion 91a, which is the regulating portion of the planetary arm lock 91, thereby regulating the swing of the pendulum mechanism 70. With this configuration, it is possible to reduce the fluctuation in the axis distance between the planetary gear 73 and the paper feed input gear 13, compared to a configuration in which the regulated portion is provided at a position away from the planetary gear 73, and stable drive transmission to the paper feed input gear 13 is possible.

[0080] In the above embodiment, the first holding portions 91a that block the swing trajectory of the planetary arm 71 are provided on both sides in the rotation axis direction of the planetary gear 73. This makes it possible to suppress twisting and tilting of the planetary arm 71 and fluctuations in the center distance, thereby enabling stable drive transmission.

[0081] Moreover, when the pendulum mechanism 70 is in the first position, the first contact portion 95a of the paper feed gear base 95 restricts the swing of the planetary gear 73 in the direction approaching the paper feed input gear 13. This configuration can prevent the axial distance between the planetary gear 73 and the paper feed input gear 13 from becoming excessively small, and can prevent the planetary gear 73 from biting into the paper feed input gear 13. Similarly, when the pendulum mechanism 70 is in the second position, the second contact portion 67a of the base member 67 restricts the swing of the planetary gear 73 in the direction approaching the recovery input gear 96. This configuration can prevent the axial distance between the planetary gear 73 and the recovery input gear 96 from becoming excessively small, and can prevent the planetary gear 73 from biting into the recovery input gear 96. As a result, the drive load can be restricted from increasing, and stable drive transmission can be achieved.

[0082] As described above, according to the present invention, the driving force is selectively transmitted by the driving gear (planetary gear) of the pendulum mechanism. The present invention is particularly effective in the above-described embodiment in which the drive source rotates in both forward and reverse directions and a force acts on the drive gear in a direction away from the driven gear, since stable drive transmission is possible regardless of the rotation direction of the drive source.

[0083] In the above embodiment, the pressing portion 41a provided on the carriage 41 comes into contact with the tip of the planetary arm lock lever 92 and swings it, thereby indirectly switching the position of the planetary arm lock 91 connected to the planetary arm lock lever 92. With this configuration, there is no need to provide a separate drive source for switching the position of the planetary arm lock 91, so that it is possible to reduce the number of parts of the image forming apparatus M, save space, and make it smaller.

[0084] In the above embodiment, the respective swing axes of the planetary arm 71 and the driving member 82 are configured to be coaxial with the rotation axis of the input gear 61. With such a configuration, it is not necessary to provide separate input gears for the respective driving units, and it is possible to reduce the number of parts of the image forming apparatus M, save space, and make it smaller.

[0085] In the above embodiment, the input gear 61 is supported by the fitting holes 67d, 68e on both sides in the axial direction, so that the variation in the axial distance between the input gear 61 and the connecting parts caused by the inclination of the shaft can be suppressed, and stable drive transmission is possible. Furthermore, the planetary arm 71 and the sun gear 72 are held by the input gear 61 between the base member 67 and the cover member 68, so that the variation in the axial distance between the input gear 61 and the connecting parts caused by the inclination of the shaft can be suppressed, and stable drive switching and drive transmission are possible.

[0086] In the above embodiment, the driving member 82 has a cylindrical shaft portion which is a rotating shaft portion, and is held by the input gear 61 by inserting the shaft portion into the inner diameter side of the cylindrical shaft portion of the input gear 61. With this configuration, the driving member 82 can be supported at the support position of the input gear 61 by the base member 67, so that the support state of the driving member 82 is stable, and stable drive transmission to the driving member 82 is possible.

[0087] In the above embodiment, the rotation shaft of the roller holder 51 is configured to be coaxial with the rotation shaft of the input gear 61. With such a configuration, it is not necessary to provide separate input gears for the respective drive units, and it is possible to reduce the number of parts of the image forming apparatus M, save space, and make it smaller.

[0088] The disclosure of this embodiment includes the following configurations (and methods). (Configuration 1) A driving source; a driven part having a driven gear; a drive transmission mechanism having a drive gear driven by the drive source, the drive transmission mechanism being rotatable between a first position where the drive gear meshes with the driven gear and a second position where the drive gear does not mesh with the driven gear; a restricting mechanism that is capable of swinging between a restricting position that restricts the swinging of the drive transmission mechanism and a non-restricting position that does not restrict the swinging of the drive transmission mechanism; A recording device comprising: The recording apparatus according to claim 1, wherein the regulating mechanism is capable of swinging about a rotation axis of the driven gear. (Configuration 2) 2. The recording apparatus according to claim 1, wherein the regulating mechanism regulates the drive transmission mechanism from being at the first position to being moved toward the second position. (Configuration 3) 3. The recording apparatus according to claim 2, wherein the regulating mechanism regulates the drive transmission mechanism, which is in the second position, from pivoting toward the first position. (Configuration 4) the regulating mechanism includes a regulating member having an arm portion that extends in a direction perpendicular to the rotation axis of the driven gear and swings around the rotation axis of the driven gear, and a protrusion portion that protrudes from the arm portion in a direction perpendicular to the rotation axis of the driven gear, The recording apparatus according to configuration 3, wherein the regulating member regulates the swinging of the drive transmission mechanism by causing the protrusion to come into contact with the drive transmission mechanism. (Configuration 5) the drive transmission mechanism has a shaft supporting portion that supports the drive gear, 5. The recording device according to configuration 4, wherein when the regulating mechanism is in the regulating position, the protrusion is located on a swing locus of the pivot support portion. (Configuration 6) The recording device described in configuration 5, wherein the protrusion portion includes a first surface that abuts against the shaft support portion when the drive transmission mechanism is in the first position, and a second surface that abuts against the shaft support portion when the drive transmission mechanism is in the second position. (Configuration 7) a first restricting member that restricts the drive transmission mechanism from swinging in a direction in which the drive gear approaches the driven gear when the drive transmission mechanism is in the first position; a second restricting member that restricts the drive transmission mechanism from swinging in a direction in which the drive gear moves away from the driven gear when the drive transmission mechanism is in the second position; 7. The recording device according to any one of configurations 1 to 6, further comprising: (Configuration 8) a pressing means for pressing the restriction mechanism to pivot the restriction mechanism from the non-restriction position to the restriction position; a biasing member that biases the restriction mechanism in a direction to pivot the restriction mechanism from the restriction position to the non-restriction position; The recording device according to any one of configurations 1 to 7, further comprising: (Configuration 9) the pressing means is a recording means having a recording head for recording on a recording medium and scanning back and forth; 9. The recording apparatus according to configuration 8, wherein the recording means is movable between a pressing position where the recording means presses the regulating mechanism and a non-pressing position where the recording means is spaced apart from the regulating mechanism. (Configuration 10) the drive transmission mechanism further includes a sun gear to which the drive force of the drive source is transmitted, the drive gear is a planetary gear that meshes with the sun gear; 10. The recording apparatus according to any one of configurations 1 to 9, wherein the drive transmission mechanism swings around a rotation axis of the sun gear. (Configuration 11) The recording device described in configuration 10, characterized in that when the drive transmission mechanism is in the first position, as viewed from the direction of the rotation axis of the planetary gear, a straight line connecting the rotation center of the planetary gear and the rotation center of the driven gear is perpendicular to a straight line connecting the rotation center of the planetary gear and the oscillation center of the drive transmission mechanism. (Configuration 12) the drive source is a motor capable of rotating forward and reverse directions, The recording device described in any one of configurations 1 to 11, characterized in that the drive transmission mechanism oscillates from the second position to the first position when the motor rotates in a first direction, and the drive transmission mechanism oscillates from the first position to the second position when the motor rotates in a second direction opposite to the first direction. (Configuration 13) Any one of configurations 1 to 12, characterized in that the driven part is a paper feed part that feeds a recording medium. A recording device according to any one of the preceding claims. (Configuration 14) the driven part is a first driven part, 14. The recording apparatus according to any one of configurations 1 to 13, further comprising a second driven part that is connected to the drive gear when the drive transmission mechanism is in the second position. (Configuration 15) a recording means having a recording head for recording on a recording medium and for reciprocating scanning; a lock mechanism that is swung by the driving source and can be swung between an operating position that restricts scanning of the recording means and a non-operating position that does not restrict scanning of the recording means; 15. The recording device according to any one of configurations 1 to 14, further comprising: (Configuration 16) 16. The recording device according to claim 15, wherein the locking mechanism has a lever member that is located on a scanning path of the recording means and abuts against the recording means when in the operative position, and that retracts from the scanning path when in the non-operative position. (Configuration 17) The drive transmission mechanism includes an input shaft that is rotationally driven by the drive source; a sun gear that receives a driving force from the input shaft and is rotatable around a rotation axis of the input shaft, the lock mechanism further includes a rotating member that transmits a driving force to the lever member and is rotatable around a rotation axis of the input shaft by receiving a driving force from the input shaft, The input shaft is supported by two support members each having a support portion. The sun gear is disposed between two journal members, 17. The recording apparatus according to configuration 16, wherein the rotating member and the lever member are provided on one of the shaft support members on an opposite side to the sun gear. (Configuration 18) the input shaft has a cylindrical portion at an end portion in an axial direction of a rotation shaft of the input shaft, 18. The recording apparatus according to configuration 17, wherein the rotating member is supported by the cylindrical portion of the input shaft. (Configuration 19) The recording apparatus further includes a suction mechanism that sucks liquid from the recording head, the suction mechanism further includes a rotating member that is rotatable around a rotation axis of the input shaft by a driving force transmitted to the input shaft, and is capable of switching between suction and non-suction depending on a rotation direction of the rotating member; 19. The recording apparatus according to configuration 17 or 18, wherein the rotating member is provided on an opposite side of the other of the shaft support members from the sun gear. [Explanation of symbols]

[0089] 13... paper feed input gear (driven gear), 31... conveyor motor (driving source), 70... pendulum mechanism (driving transmission mechanism), 73... planetary gear (driving gear), 90... regulating mechanism, M... image forming apparatus

Claims

1. A drive source, A driven part having a driven gear, A drive transmission mechanism having a drive gear driven by the drive source, capable of swinging between a first position where the drive gear meshes with the driven gear and a second position where the drive gear does not mesh with the driven gear, A regulating mechanism capable of swinging between a regulating position for regulating the swinging of the drive transmission mechanism and a non-regulating position for not regulating the swinging of the drive transmission mechanism, A recording apparatus comprising: The regulating mechanism is swingable about the rotation axis of the driven gear, and is characterized in that the drive transmission mechanism in the first position is regulated from swinging toward the second position.

2. The recording apparatus according to claim 1, wherein the regulating mechanism regulates the drive transmission mechanism in the second position from swinging toward the first position.

3. The regulating mechanism includes a regulating member having an arm portion extending in a direction perpendicular to the rotation axis of the driven gear and swingable about the rotation axis of the driven gear, and a protrusion protruding from the arm portion in a direction perpendicular to the rotation axis of the driven gear, The recording apparatus according to claim 2, wherein the regulating member is characterized in that the protrusion abuts against the drive transmission mechanism to regulate the swinging of the drive transmission mechanism.

4. The drive transmission mechanism has a shaft support portion for pivotally supporting the drive gear, The recording apparatus according to claim 3, wherein when the regulating mechanism is in the regulating position, the protrusion is located on the swinging locus of the shaft support portion.

5. The recording apparatus according to claim 4, wherein the protrusion includes a first surface that abuts against the shaft support portion when the drive transmission mechanism is in the first position and a second surface that abuts against the shaft support portion when the drive transmission mechanism is in the second position.

6. A first regulating member for regulating the drive transmission mechanism from swinging in a direction in which the drive gear approaches the driven gear when the drive transmission mechanism is in the first position, A second regulating member for regulating the drive transmission mechanism from swinging in a direction in which the drive gear separates from the driven gear when the drive transmission mechanism is in the second position, The recording apparatus according to claim 1, further comprising:

7. Pressing means for pressing the regulating mechanism to swing it from the non-regulating position to the regulating position, A biasing member for biasing the regulating mechanism in a direction to swing it from the regulating position to the non-regulating position, The recording apparatus according to claim 1, further comprising

8. wherein the pressing means is a recording means that mounts a recording head for recording on a recording medium and reciprocates for scanning, The recording apparatus according to claim 7, wherein the recording means is movable between a pressing position for pressing the regulating mechanism and a non-pressing position spaced apart from the regulating mechanism.

9. wherein the drive transmission mechanism further has a sun gear to which the driving force of the drive source is transmitted, wherein the drive gear is a planetary gear meshing with the sun gear, The recording apparatus according to claim 1, wherein the drive transmission mechanism swings about the rotation axis of the sun gear.

10. When the drive transmission mechanism is in the first position, when viewed from the direction of the rotation axis of the planetary gear, a straight line connecting the rotation center of the planetary gear and the rotation center of the driven gear, and a straight line connecting the rotation center of the planetary gear and the swing center of the drive transmission mechanism are orthogonal to each other. The recording apparatus according to claim 9.

11. wherein the drive source is a motor capable of rotating forward and backward, The recording apparatus according to claim 1, wherein when the motor rotates in the first direction, the drive transmission mechanism swings from the second position to the first position, and when the motor rotates in the second direction opposite to the first direction, the drive transmission mechanism swings from the first position to the second position.

12. The recording apparatus according to claim 1, wherein the driven part is a paper feeding part for feeding a recording medium.

13. wherein the driven part is a first driven part, The recording apparatus according to claim 1, further comprising a second driven part connected to the drive gear when the drive transmission mechanism is in the second position.

14. recording means that mounts a recording head for recording on a recording medium and reciprocates for scanning, a lock mechanism swung by the drive source, the lock mechanism being swingable between an operating position for regulating the scanning of the recording means and a non-operating position for not regulating the scanning of the recording means, The recording apparatus according to claim 1, further comprising

15. The recording apparatus according to claim 14, wherein the lock mechanism has a lever member that is located on the scanning path of the recording means and contacts the recording means when in the operating position, and retreats from the scanning path when in the non-operating position.

16. wherein the drive transmission mechanism has an input shaft that is rotationally driven by the drive source, a sun gear that is driven by the input shaft and is rotatable about the rotation axis of the input shaft further comprising the locking mechanism further has a rotating member that transmits drive to the lever member and is driven by the input shaft and is rotatable about the rotation axis of the input shaft further comprising two shaft support members having shaft support portions for supporting the input shaft the sun gear is disposed between the two shaft support members the recording apparatus according to claim 15, wherein the rotating member and the lever member are provided on one side of the shaft support member, on the side opposite to the sun gear

17. the input shaft has a cylindrical portion at an axial end of the rotation axis of the input shaft the recording apparatus according to claim 16, wherein the rotating member is pivotally supported by the cylindrical portion of the input shaft

18. the recording apparatus further comprises a suction mechanism for sucking liquid from the recording head the suction mechanism further has a rotating member that is driven by the input shaft and is rotatable about the rotation axis of the input shaft, and can switch between suction and non-suction according to the rotation direction of the rotating member the recording apparatus according to claim 16 or 17, wherein the rotating member is provided on one side of the shaft support member, on the side opposite to the sun gear

Images