JP7438717B2 - recording device - Google Patents

Description

The present invention relates to a recording apparatus that includes a recording head and performs recording on a recording medium such as paper.

A recording device that records on a recording medium such as paper is equipped with a drive mechanism to transport the recording medium, and also has a recording head mounted on a carriage that records on the recording medium, and moves the carriage relative to the recording medium. Execute recording while moving the target. Some of such recording apparatuses include a drive switching mechanism that can selectively transmit the driving force from the drive mechanism to another drive destination depending on the position of the carriage. For example, the recording apparatus described in Patent Document 1 includes a service station equipped with a cap, a wiper mechanism, etc., and a drive switching mechanism that can selectively transmit drive to the service station depending on the position of the carriage on which the recording head is mounted. We are prepared. In this recording apparatus, after the drive is connected via the drive switching mechanism, the cap moves up and down with respect to the surface of the recording head, and the wiper mechanism that wipes the surface of the recording head operates. In the recording device disclosed in Patent Document 2, by moving the carriage to a specific position, the stopper is pushed in and disengaged from the swing arm regulating portion, thereby selectively changing the drive transmission destination. The paper feed unit is configured to operate.

US Patent No. 9,539,815 Japanese Patent Application Publication No. 2010-37086

The inventions described in Patent Documents 1 and 2 both attempt to selectively change the drive transmission destination using a drive switching mechanism when the carriage is at a specific position. Therefore, if the carriage is unintentionally moved to that specific position, the driving force will be transmitted to an unintended member. For example, in the recording device described in Patent Document 1, when a paper jam occurs inside the recording device and the user manually moves the carriage to remove the jammed paper, the carriage activates the drive switching mechanism. It may be moved to the desired position. As a result, the service station may be activated unintentionally. Similarly, in the recording device described in Patent Document 2, when the user moves the carriage to remove jammed paper, the drive transmission destination switches to the paper feed unit, and the paper feed unit is unintentionally driven. Sometimes.

An object of the present invention is to prevent the carriage from moving to a position where the drive switching mechanism is activated and unintentionally switching the drive transmission destination when the user moves the carriage to clear a paper jam or the like. The purpose is to provide a recording device.

The recording apparatus of the present invention includes a conveyance roller that conveys a recording medium in a first direction, a motor that drives the conveyance roller, and a carriage that is equipped with a recording head and is movable in a second direction that intersects with the first direction. A cover that opens and closes in an open state that allows access to the carriage and a covered state that covers the carriage, and a drive switching mechanism that can transmit the driving force from the motor to another unit when the carriage enters a predetermined area. , a regulating member that regulates entry of the carriage into a predetermined area when the cover is in an open state.

According to the present invention, when the cover of the recording device is open, the movement of the carriage to the position where the drive switching mechanism is operated is regulated by the regulating member, so that even if the carriage is moved by the user, the movement of the carriage is prevented. It is possible to prevent unintentional switching of the drive transmission destination even when the drive is transmitted.

1 is an external perspective view showing an example of a recording device to which the present invention can be applied. FIG. 2 is a perspective view showing the inside of the recording device. FIG. 3 is a bottom view showing the recording head. It is a perspective view showing a cap member. It is a perspective view showing a wiper member. It is a figure explaining operation of a drive switching mechanism. FIG. 3 is a schematic cross-sectional view showing an entry regulating member in the recording apparatus of the first embodiment. It is a figure showing the relationship between an opening/closing cover and an entry restriction member. It is a figure showing the relationship between a carriage and an entry restriction member. It is a side view explaining a direct-acting cam. FIG. 7 is a schematic cross-sectional view showing an entry regulating member in a recording device according to a second embodiment. FIG. 7 is a diagram illustrating a drive switching mechanism in a recording apparatus according to a third embodiment. It is a figure showing the relationship between a drive switching mechanism and an entry restriction member.

[First embodiment]
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a recording device according to a first embodiment of the present invention, in which (A) is a perspective view showing the entire recording device 1, and (B) is a perspective view showing the recording device 1 with an open/close cover 2 opened. 1 is a perspective view showing a recording device 1 of FIG. The illustrated recording device 1 is configured as an inkjet recording device that has a substantially rectangular parallelepiped shape and performs recording on a recording medium such as paper, and an opening/closing cover 2 is provided on the top surface of the main body of the recording device 1. ing. One end of the openable cover 2 is connected to the main body of the recording apparatus 1 via a hinge, and by opening the openable cover 2, the inside of the main body of the recording apparatus 1 can be accessed. That is, FIG. 1(A) shows a covered state in which the inside of the main body of the recording apparatus 1 is covered by the opening/closing cover 2 being closed. A display panel 3 is provided on the front surface of the recording device 1 to receive user operations on the recording device 1 and to inform the user of the status of the recording device 1. A first paper feed port 15 for supplying a recording medium into the inside of the recording device 1 is provided on the top surface of the recording device 1 at a position in contact with the back surface. Furthermore, a second paper feed port 16 is formed at the lower front of the recording apparatus 1 . The recording medium on which recording has been performed by the recording apparatus 1 is discharged from a paper discharge port 17 provided at a lower part of the front of the recording apparatus 1 and above the second paper feed port 16 .

As shown in FIG. 1B, inside the main body of the recording apparatus 1, a recording head 41, which will be described later with reference to FIG. 3, and an ink tank 10 containing ink to be supplied to the recording head 41 are mounted on a carriage 11. has been done. In this example, a plurality of ink tanks 10 each containing a different type of ink are mounted on a carriage 11. When the openable cover 2 is opened, an opening 12 is formed between the openable cover 2 and the main body of the recording apparatus 1, and the user can access the ink tank 10 through this opening 12. When the remaining amount of ink in the ink tank 10 becomes zero, the user can open the openable cover 2 and replace the ink tank 10 on the carriage 11 through the opening 12. Furthermore, if the recording medium fed from the first paper feed port 15 or the second paper feed port 16 causes a paper jam inside the recording device 1, the user can open the opening/closing cover 2 to The recording medium that caused the paper jam can be removed through the opening 12.

FIG. 2 is a perspective view showing the internal configuration of the recording device 1 by removing the open/close cover 2 and the exterior of the recording device 1. The height direction of the recording device 1 is defined as the Z direction. The transport direction of the recording medium at the position where the recording head 41 performs recording on the recording medium is indicated by an arrow 20 in the figure, and this direction is defined as the Y direction. Since the carriage 11 can reciprocate or scan along a direction perpendicular to both the Y direction and the Z direction as shown by the arrow 20 in the figure, this direction is defined as the X direction. A recording head 41 (see FIG. 3) mounted on the carriage 11 performs recording on a recording medium while scanning in the X direction. The recording medium placed in the first paper feed port 15 shown in FIG. 1 is fed to the position of the transport roller pair 34 by the first paper feed unit 37. The recording medium placed in the second paper feed port 16 is fed to the position of the transport roller pair 34 by the second paper feed unit 38 . The conveying roller pair 34 includes a driving side conveying roller 34a and a driven side conveying roller 34b. The recording medium fed to the position of the pair of transport rollers 34 is transported onto the support member (platen) 30 while being held between transport rollers 34a and 34b. In this state, the carriage 11 scans along the X direction while ejecting ink from the recording head 41, thereby forming an image on the recording medium.

An input gear 39 capable of transmitting driving force from a motor (not shown) is connected to the drive-side conveying roller 34a, and the pair of conveying rollers 34 rotates due to the driving force transmitted via the input gear 39, and the recording medium is rotated. transport. Inside the main body of the recording apparatus 1, a carriage rail 35 is provided to extend in the X direction, and a belt drive mechanism (not shown) arranged along the X direction is also provided. The carriage 11 holds the carriage rail 35 by its holding part 42 (see FIG. 3) and is connected to a belt drive mechanism, thereby making it possible to scan in the X direction. In this embodiment, a gear drive mechanism is used to drive the transport roller pair 34, and a belt drive mechanism is used to drive the carriage 11 in the X direction. Good too.

The range in which the carriage 11 can move when moving and scanning in the X direction along the carriage rail 35 is a printing area 50 corresponding to the width of the recording medium and a drive switching area (predetermined) on one side of the printing area 50. area) 51, and an area 53 on the other side sandwiching the printing area 50. In the illustrated example, the drive switching region 51 is on the downstream side in the +X direction in the movement range of the carriage 11. That is, the drive switching area 51 and the area 53 are arranged outside the printing area 50. The printing area 50 is an area where printing is performed on a printing medium by ejecting ink from the printing head 41 while the carriage 11 scans this area. Further, in the main body of the recording apparatus 1, a maintenance unit 31, which is a mechanism for maintaining and recovering the ink ejection performance of the recording head 41, is provided on the downstream side in the +X direction. The maintenance unit 31 includes a cap member 32 and a wiper member 33. The maintenance unit 31 operates to cover the recording head 41 with the cap member 32 and reduce the pressure inside the cap member 32 to suck ink from the recording head 41, and to wipe the ink ejection surface of the recording head 41 with the wiper member 33. It is possible to implement The operation of wiping off the ink ejection surface is also called wiping. The maintenance unit 31 operates by being transmitted with driving force, but when the carriage 11 is in the printing area 50 and performing a recording operation, the transmission of the driving force to the maintenance unit 31 is cut off. Therefore, when the carriage 11 is in the print area 50, the maintenance unit 31 does not operate. On the other hand, by moving the carriage 11 to the drive switching area 51, driving force can be transmitted to the maintenance unit 31, as described later.

FIG. 3 is a bottom view of the recording head 41 mounted on the carriage 11, viewed from the -Z direction. 4 is a perspective view showing the cap member 32, and FIG. 5 is a perspective view showing the wiper member 33. The recording head 41 is configured as an inkjet recording head, and is mounted on the carriage 11 so that its ink ejection surface for ejecting ink faces the −Z direction and can eject ink onto a recording medium. In the illustrated example, the recording head 41 includes a first ejection port array 40a in which a plurality of ejection ports for ejecting ink are arranged in a row in the Y direction, and a first ejection port array 40a in which a plurality of ejection ports are arranged in a row in the Y direction. A plurality of second ejection port rows 40b are arranged in the direction. The cap member 32 has a shape corresponding to the first discharge port row 40a and the second discharge port row 40b, and includes a first cap 32a and a second cap that can cover the first discharge port row 40a. It is integrated with a second cap 32b that can cover the outlet row 40b. The cap member 32 can be raised and lowered in the Z direction by a lifting mechanism (not shown), and when on standby, the first cap 32a and the second cap 32b are at a lowered position in the -Z direction so as not to interfere with the carriage 11. It is in. On the other hand, when protecting the recording head 41 or sucking ink from the recording head 41, the carriage 11 is moved in the X direction so that the ink ejection surface and the cap member 32 face each other, and then the cap member 32 is Move it in the +Z direction. As a result, the first cap 32a and the second cap 32b of the cap member 32 rise and come into contact with the ink ejection surface of the recording head 41, causing the first ejection port array 40a and the second ejection port array 40b, respectively. Seal. When suctioning the ink inside the recording head 41, the pressure inside the first cap 32a and the second cap 32b may be reduced using a pump (not shown).

The wiper member 33 is a member that is movable in the Y direction by a moving mechanism (not shown), and is a member that is movable in the Y direction by a moving mechanism (not shown), and is connected to a first wiper 33a and a second wiper that correspond to the first discharge port row 40a and the second discharge port row 40b, respectively. A wiper 33b is provided. The first wiper 33a and the second wiper 33b are both made of a flexible material such as rubber. The length of the first wiper 33a in the X direction is set to a length that can wipe the first discharge port array 40a and its surroundings. Further, the length of the second wiper 33b in the X direction is set to a length that can wipe the second discharge port array 40b and its surroundings. The wiper member 33 further includes a third wiper 33c that can wipe the entire ink ejection surface of the recording head 41 and is made of a flexible material such as rubber. During standby, the wiper member 33 is located on the upstream side in the Y direction within its movement range so as not to interfere with the carriage 11, as shown in FIG. When wiping the ink ejection surface of the recording head 41, the carriage 11 is moved in the X direction so that the ink ejection surface and the wiper member 33 face each other, and then the wiper member 33 is moved in the +Y direction. As a result, the third wiper 33c moves in the +Y direction while contacting the ink ejection surface, thereby wiping off the ink adhering to the ink ejection surface. In addition, the first wiper 33a and the second wiper 33b move in the +Y direction while contacting the first ejection port row 40a and the second ejection port row 40b, respectively, and the particles adhere to each ejection port row. Any ink, etc. that may be present will be wiped off.

The above-mentioned maintenance unit 31 including the cap member 32 and the wiper member 33 receives a driving force through the drive switching mechanism 60 when the carriage 11 is located in the drive switching area 51, and is operated by the transmitted driving force. . The drive switching mechanism 60 will be explained below. FIG. 6 is a diagram illustrating the drive switching mechanism 60, and is a diagram seen from the back side (-Y direction side) of the recording apparatus 1. FIG. 6(A) shows a state where the carriage 11 is located at the downstream end of the print area 50 in the +X direction, and FIG. 6(B) shows a state where the carriage 11 has further moved in the +X direction and is in the drive switching area. 51 is shown. The maintenance unit 31 is equipped with a direct-acting cam 61, and is configured such that when the direct-acting cam 61 moves in the Y direction, a drive mechanism (not shown) moves the cap member 32 up and down and the wiper member 33 performs a wiping operation. ing. An output gear 69 is attached to the drive-side conveyance roller 34a, and when the conveyance roller 34a is driven by a motor (not shown), the output gear 69 also rotates together with the conveyance roller 34a. The driving force thus transmitted to the output gear 69 is also transmitted to the movable gear 63 movable in the X direction. That is, the movable gear 63 is configured to mesh with the connecting gear 69a to which the driving force is transmitted from the output gear 69, wherever the movable gear 63 is within its movable range in the X direction. This movable gear 63 is biased in the +X direction and is configured to move in the -X direction when pressed by the tip of a lever 64b, which is one end of the drive switching section 64. The drive switching section 64 includes a contact section 64c at the other end opposite to the lever 64b, and when the contact section 64c is displaced in the +X direction, the tip of the lever 64b is displaced in the -X direction. Further, a standby gear 62 having a rotating shaft extending from the rotating shaft of the movable gear 63 is also provided. The standby gear 62, the movable gear 63, the drive switching section 64, the output gear 69, and the connection gear 69a constitute a drive switching mechanism 60 having a clutch structure.

When the carriage 11 is in the printing area 50, the contact portion 65 of the carriage 11 and the contact portion 64c of the drive switching unit 64 do not contact each other as shown in FIG. 6(A), and the lever 64b is also a movable gear. Do not press 63. On the other hand, when the carriage 11 moves to the drive switching area 51, the abutting part 65 of the carriage 11 abuts against the abutting part 64c of the drive switching part 64, as shown in FIG. 6(B). As a result, the lever 64b presses the movable gear 63. The movable gear 63 moves in the −X direction and engages with the standby gear 62, and the standby gear 62 starts rotating together with the movable gear 63. Since the standby gear 62 is connected to the linear-acting cam 61, the driving force transmitted from the motor (not shown) to the drive-side conveyance roller 34a is transmitted to the linear-acting cam 61, so that the maintenance unit 31 can be driven. becomes.

As described above, in the recording apparatus 1 of this embodiment, when the carriage 11 enters the drive switching area 51, the maintenance unit 31 can be driven via the drive switching mechanism 60. However, even if it is not intended to operate the maintenance unit 31, the maintenance unit 31 may operate due to the carriage 11 moving to the drive switching area 51. For example, when a recording medium jams inside the recording apparatus 1, the user manually moves the carriage 11 to the drive switching area 51 in an attempt to remove the jammed recording medium, and as a result, the maintenance unit 31 may operate. Therefore, in the recording apparatus 1 of this embodiment, in order to prevent the carriage 11 from entering the drive switching area 51 when the operation of the maintenance unit 31 is not intended, an entry regulating member 100 shown in FIG. 7 is provided. . The entry regulating member 100 will be explained below. FIG. 7 is a diagram showing the entry regulating member 100 and its surroundings in the recording apparatus 1. 7, (A) shows a state in which the protruding part 101 of the entry regulating member 100 protrudes with respect to the moving path of the carriage 11, and (B) shows a state in which the protruding part 101 retreats from the moving path of the carriage 11 ( This indicates a state in which the vehicle is being evacuated.

As described above, the carriage 11 is capable of reciprocating in the X direction while holding the carriage rail 35 with its holding portion 42 . The carriage rail 35 has a C-shaped cross section, and the carriage 11 includes an extending portion (11a) extending from the holding portion 42 to the inside of the carriage rail 35 in the -Y direction. That is, the extended portion 11a of the carriage 11 extends in the -Y direction so as to overlap the carriage rail in the Y direction. The entry regulating member 100 is provided in contact with the carriage rail 35 and includes a protrusion 101 that is movable in the Y direction. The protrusion 101 is biased in the +Y direction by a biasing member 103 such as a spring, and protrudes into the carriage rail 35 as shown in FIG. 7(A). This state is also referred to as the protruding state of the protruding portion 101. In the protruding state, when the user attempts to move the carriage 11 in the +X direction (in the front direction in FIG. 7) to the drive switching area 51, the extended portion 11a of the carriage 11 It collides with the protrusion 101 . As a result, the user cannot move the carriage 11 further in the +X direction, and therefore the carriage 11 is prevented from moving to the drive switching area 51. Further, a cam follower section 102 is connected to the protruding section 101. By moving the cam follower part 102, which can be engaged with the notch provided in the cam part 110, in the -Y direction, the protrusion part 101 also moves in the -Y direction, and thereby, as shown in FIG. 7(B), The protruding portion 101 is in a retracted state in which it is retracted from within the carriage rail 35. In a state in which the protrusion 101 does not protrude into the carriage rail 35, that is, in a state in which it is retracted (retracted) from the moving path of the carriage 11, the carriage 11 cannot move to the drive switching area 51 and enter the drive switching area 51. It is possible.

Whether the protruding part 101 of the entry regulating member 100 is in the protruding state or in the retracted state is determined by the position of the cam follower part 102. Therefore, in this embodiment, the position of the cam follower section 102 is changed according to the opening/closing of the cover 2 of the recording apparatus 1, so that when the user opens the cover 2, the carriage 11 may be unintentionally moved. Movement to the drive switching area 51 is prevented. FIGS. 8A to 8C show the operation of the entry regulating member 100 when the user opens and closes the openable cover 2. FIG. The opening/closing cover 2 is provided with a cam portion 110 for interlocking the cam follower portion 102 with opening/closing of the opening/closing cover 2. The cam portion 110 is rotatable together with the open/close cover 2 around an axis that attaches the open/close cover 2 to the main body of the recording device 1 . When the opening/closing cover 2 is closed, the cam follower part 102 engages with the notch provided in the cam part 110, as shown in FIG. 8(A). The protruding portion 101 of the regulating member 100 is moved back to a retracted state. At this time, since the protrusion 101 does not protrude into the carriage rail 35, the carriage 11 can enter the drive switching area 51 according to the normal control sequence in the recording apparatus 1.

When the opening/closing cover 2 is opened, the cam portion 110 also rotates together with the opening/closing cover 2, as shown in FIG. The cam portion 110 is configured such that the cam follower portion 102 can move in the +Y direction when the openable cover 2 is opened. Therefore, as the opening/closing cover 2 opens, the protruding portion 101 biased by the biasing member 103 protrudes into the carriage rail 35 as shown in FIG. 8(B) and enters a protruding state. When the opening/closing cover 2 is closed in this state, the cam part 110 moves the cam follower part 102 in the -Y direction, resulting in the state shown in FIG. Return to That is, if the open/close cover 2 is opened while the carriage 11 is in the printing area 50, the carriage 11 is prevented from entering the drive switching area 51 due to the protrusion 101 of the entry regulating member 100 protruding. . Further, when the open/close cover 2 is closed, the carriage 11 is in a state where it can enter the drive switching area 51.

FIG. 8C shows a state in which the opening/closing cover 2 is opened when the carriage 11 is already in the drive switching area 51. For example, when a recording command is not output to the recording apparatus 1, the recording apparatus 1 is in a standby state. In the standby state, the carriage 11 is moved to the drive switching area 51 and the cap member 32 is closed for protection. Control is performed to cover the head 41. When opening/closing cover 2 is opened in such a standby state, initially, as opening/closing cover 2 is opened, cam follower section 102 moves along cam section 110 and protrusion section 101 also moves in the +Y direction. The protruding portion 101 comes into contact with the carriage 11 before entering the protruding state shown in 8(B). Furthermore, when the opening/closing cover 2 is opened, the cam follower section 102 separates from the cam section 110, thereby allowing the user to open/close the opening/closing cover 2 even when the carriage 11 is already located in the drive switching area 51. In the above description, the direction in which the protruding part 101 of the entry regulating member 100 is urged is the Y direction, but the direction in which the protruding part 101 is urged is a direction perpendicular to or intersecting with the moving direction of the carriage 11. For example, it may be in the Z direction. Further, the direction of movement of the carriage 11 itself may be any direction as long as it intersects with the conveyance direction of the recording medium.

FIG. 9 is a schematic cross-sectional view of the periphery of the drive switching mechanism 60 and the entry restriction member 100 seen from the +Z direction, and (A) shows the state immediately after the carriage 11 enters the drive switching region 51 from the printing region 50. (B) shows the protruding portion 101 in a protruding state. As shown in FIG. 9A, when the carriage 11 enters the drive switching area 51 from the printing area 50, the abutting part 65 of the carriage 11 abuts the abutting part 64c of the drive switching part 64. From this state, the carriage 11 further moves in the -X direction as indicated by the arrow in the figure, thereby making it possible to drive the maintenance unit 31 as explained using FIG. 6. In the protruding state in which the protrusion 101 of the entry restriction member 100 protrudes into the carriage rail 35, the protrusion 101 collides with the carriage 11 at a position before entering the drive switching area 51, as shown in FIG. 9(B). , the carriage 11 cannot enter the drive switching area 51. Therefore, since the contact portion 65 of the carriage 11 does not contact the contact portion 64c of the drive switching portion 64, the maintenance unit 31 is not driven.

FIG. 10 is a side view illustrating the operation of the direct-acting cam 61 provided in the maintenance unit 31, in which (A) shows the front abutment state of the direct-acting cam 61, and (B) shows the back abutting state of the direct-acting cam 61. Indicates the guessing state. The linear motion cam 61 is movable over the entire area in the Y direction within the recording apparatus 1, thereby maximizing the length of the cam surface. In addition, the position of the direct-acting cam 61 in the Y direction is controlled by the amount of drive from the abutment position where it abuts against either the front abutment part 70 or the back abutment part 71, which allows for accuracy without using a sensor. The direct-acting cam 61 can be stopped well. In a state where the transport roller pair 34 and the direct-acting cam 61 are mechanically connected, when the user pulls out the recording medium to clear a paper jam, the transport roller pair 34 may rotate together. Due to this rotation of the transport roller pair 34, the direct-acting cam 61 abuts against the front abutting portion 70 or the back abutting portion 71. Once the direct-acting cam 61 abuts against the front abutting portion 70 or the back abutting portion 71, it cannot move any further, and the pair of transport rollers 34 also become unable to rotate any further. If the user forcibly pulls out the recording medium in this state, the recording medium may be torn and residual pieces such as pieces of paper may remain in the recording apparatus 1 . On the other hand, in the present embodiment, since the carriage 11 is prevented from moving to the drive switching area 51, the conveyance roller pair 34 and the linear drive cam 61 are not mechanically connected, and as a result, the recording medium can be pulled out. However, since the direct-acting cam 61 does not move even when the cam 61 is moved, it is possible to prevent debris from remaining.

In the recording apparatus 1 of this embodiment, it is possible to appropriately select where within the movement range of the carriage 11 to set the drive switching area 51 according to its configuration. However, since the protruding portion 101 of the entry regulating member 100 can be protruded and retracted as the opening/closing cover 2 opens and closes, it is not possible to set the drive switching area 51 outside the printing area 50 as in the present embodiment. preferable. Further, the configuration of this embodiment is preferable in that it is possible to prevent the carriage 11 from entering over the entire drive switching area 51. In the above description, it is assumed that the drive switching area 51 is located on the end side in the +X direction of the main body of the recording apparatus 1, but the drive switching area 51 is located on the end side in the -X direction (that is, area 53 in FIG. 2). 51 may be set.

In the recording apparatus 1 of the present embodiment, when a paper jam occurs while the pair of transport rollers 34 are sandwiching the recording medium and the user attempts to remove the jammed paper from the opening 12 by opening the opening/closing cover 2, the opening/closing cover 2 When opened, the protruding portion 101 of the entry regulating member 100 protrudes. Therefore, even if the user moves the carriage 11 in the print area 50 toward the drive switching area 51, the carriage 11 can be prevented from entering the drive switching area 51. When a user attempts to pull out a jammed recording medium in order to clear a paper jam, the pair of transport rollers 34 also rotates together with the recording medium. Here, if the transport roller pair 34 and another mechanism such as the maintenance unit 31 are mechanically connected, the other mechanism will also operate, but in this embodiment, the carriage 11 is in the drive switching area 51. Since it is not possible to enter, the other mechanism will not operate either.

[Second embodiment]
Next, a recording apparatus according to a second embodiment of the present invention will be described. In the recording device of the first embodiment, the protruding portion 101 of the entry regulating member 100 is caused to protrude and retreat by the biasing member 103 and the cam portion 110, but in the second embodiment, the driving force is transmitted. to perform protrusion and retraction. Note that since the overall configuration of the recording device 1 is the same as that of the first embodiment, only the differences from the recording device 1 of the first embodiment will be described below.

FIG. 11 is a diagram illustrating the entry regulating member 100 in the second embodiment. In the second embodiment as well, the entry restriction member 100 includes a protrusion 101 that can protrude into the carriage rail 35 . The difference from the entry regulating member 100 in the first embodiment is that instead of the cam follower part 102, a rack part 150 that moves the protrusion part 101 in the Y direction, a torque limit gear 151 that meshes with the rack part 150, and a drive generation 152 is provided. The drive generation unit 152 drives the rack unit 150 via the torque limit gear 151, and by driving the drive generation unit 152, the protrusion 101 of the entry regulating member 100 can move in the Y direction. . A detection means (not shown) that detects the open/close state of the open/close cover 2 is provided, and when the detection means detects the open state of the open/close cover 2, the drive generating section 152 controls the rack section 150 via the torque limit gear 151. Drive. As a result, the protrusion 101 protrudes into the carriage rail 35. When the detection means detects that the opening/closing cover 2 is closed, the drive generating section 152 rotates the torque limit gear 151 in the opposite direction to move the protrusion 101 backward. Further, when a predetermined period of time has elapsed with the opening/closing cover 2 in the open state, the drive generating section 152 causes the protruding section 101 to retreat, and the carriage 11 is moved to the drive switching area 51 in order to cover the ink ejection surface with the cap member 32. Control may also be performed to move it to . By performing such control, it is possible to prevent the first ejection port array 40a and the second ejection port array 40b provided in the recording head 41 from becoming clogged due to being exposed to the atmosphere for a long time.

[Third embodiment]
Next, a recording apparatus according to a third embodiment of the present invention will be described. In the third embodiment, the present invention is applied to a printing apparatus having a drive switching mechanism and a drive connection destination different from those of the printing apparatus of the first embodiment. The overall configuration of the recording device and the configuration of the entry regulating member 100 of the third embodiment are the same as those of the first embodiment, and a description thereof will be omitted.

FIG. 12 is a sectional view showing a drive switching mechanism and a paper feeding unit in a printing apparatus according to a third embodiment, and (A) shows a state in which the printing apparatus is waiting for a printing command; B) shows a state in which the contact portion 265 of the carriage 211 is in contact with the drive switching portion 264. The recording medium set in the paper feed unit 237 is fed by a paper feed roller (not shown) provided on the same axis of the paper feed roller gear 301 to a conveyance roller (not shown) provided on the same axis of the output gear 240. It is now possible to do so. A recording head (not shown) is mounted on a carriage 211. The carriage 211 is configured to be able to reciprocate in the X direction, that is, perpendicular to the paper surface in the figure. The recording head performs recording on the recording medium conveyed directly below the carriage 211 by the conveyance roller. The paper feed roller gear 301 is connected to a cam gear 300, and when the cam gear 300 rotates once, it separates and feeds one recording medium from the paper feed unit 237, and feeds the next recording medium. Preparatory operations for paper are performed. A missing tooth portion 305 is formed on a part of the outer periphery of the cam gear 300. Since the toothless portion 305 is provided, the drive is cut off after the paper feed roller has fed the recording medium to the conveyance roller.This causes the drive to be cut off when the conveyance roller conveys the recording medium for recording. In this case, the paper feed roller rotates without any load. The output gear 240 is driven by a motor (not shown), and a sun gear 310 and a planetary gear 311 are provided to transmit driving force from the output gear 240 to the cam gear 300. Sun gear 310 is always meshed with output gear 240.

The driving force transmitted from output gear 240 is transmitted to planet gear 311 via sun gear 310. When the recording device is waiting for a recording command from the host device, as shown in FIG. is not connected to anything other than the sun gear 310. The drive switching section 264 is a lever-shaped member that rotates around a fulcrum 264a, and one side of the drive switching section 264 sandwiching the fulcrum 264a is an abutting section 264b, and the other side is a locking section 312. The sun gear 310, the planet gear 311, and the drive switching section 264 constitute a drive switching mechanism. FIG. 12B shows a state in which the carriage 211 has moved to the drive switching area and the contact portion 265 of the carriage 211 has contacted the contact portion 264b of the drive switching portion 264. When the abutting portion 265 of the carriage 211 abuts and presses the abutting portion 264b of the drive switching portion 264, the drive switching portion 264 rotates counterclockwise as shown in the figure. Regulations on revolution will be lifted. As a result, the planet gear 311 can move to a position where it meshes with the cam gear 300 and connects with the cam gear 300, and the driving force transmitted from the output gear 240 is transmitted to the cam gear 300 via the planet gear 311, causing the cam gear 300 to rotate. As the cam gear 300 rotates, the paper feed roller gear 301 also rotates again, and paper feeding starts.

FIG. 13 is a schematic cross-sectional view of the vicinity of the drive switching mechanism 265 and the entry regulating member 100 in the recording apparatus of the third embodiment when viewed from above with an open/close cover (not shown) opened. Similar to the above-described embodiments, the entry regulating member 100 causes a protrusion 101 urged by an urging member 103 to protrude with respect to the path along which the carriage 211 moves in response to opening and closing of the opening/closing cover. . As shown in FIG. 13, when the protruding part 101 protrudes into the moving path of the carriage 211, the abutting part 265 of the carriage 211 does not abut against the abutting part 264b of the drive switching mechanism 264. . Therefore, the driving force is prevented from being transmitted to the cam gear 300. In this state, even if a paper jam occurs with the recording medium being sandwiched between a pair of transport rollers (not shown in FIG. 13) and the user attempts to remove the paper jam, the carriage 211 will move toward the drive switching area. You can prevent this from happening. Therefore, when the user pulls the recording medium to clear a paper jam, the pair of conveyance rollers rotates along with the recording medium, and the next recording medium set in the paper feed unit 237 may be unintentionally fed. can be prevented.

1 Recording device 2 Opening/closing cover 11, 211 Carriage 41 Recording head 35 Carriage rail 100 Entry regulating member 101 Projection part 103 Biasing member

Claims (11)

a conveyance roller that conveys the recording medium in a first direction;
a motor that drives the conveyance roller;
a carriage carrying a recording head and movable in a second direction intersecting the first direction;
a cover that opens and closes into an open state that allows access to the carriage and a covered state that covers the carriage;
a drive switching mechanism capable of transmitting the driving force from the motor to another unit when the carriage enters a predetermined area;
a regulating member that regulates the carriage from entering the predetermined area when the cover is in the open state;
A recording device comprising: 2. The recording apparatus according to claim 1, wherein the regulating member projects into a moving path of the carriage when the cover is in the open state. 3. The recording apparatus according to claim 1, wherein the predetermined area is outside a recording area where the recording head performs recording on the recording medium. 4. The recording apparatus according to claim 1, wherein the regulating member is retracted from the movement path of the carriage when the cover is in the covered state. a cam part that interlocks with opening and closing of the cover;
a cam follower part that is provided to be engageable with the cam part and moves the regulating member in a direction to retreat from the movement path when the cover is in the covering state;
The recording device according to claim 4, characterized in that it has: 6. The recording apparatus according to claim 1, further comprising a detection means for detecting whether the cover is opened or closed. 7. The recording apparatus according to claim 6, further comprising a drive section that causes the regulating member to project toward the moving path of the carriage when the detecting means detects the open state of the cover. 8. The recording apparatus according to claim 1, wherein the other unit is a paper feed roller that feeds the recording medium from a paper feed unit to the transport roller. 8. The recording apparatus according to claim 1, wherein the other unit is a maintenance unit that performs maintenance of the recording head. The recording apparatus according to claim 9, wherein the maintenance unit includes a wiper that wipes the ejection surface of the recording head. 11. The recording apparatus according to claim 9, wherein the maintenance unit includes a cap that caps the ejection surface of the recording head.

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