JP2018002315A - Medium feeding device and recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medium feeding device which is smaller-sized and compact while comprising a stopper mechanism regulating protrusion of a sheet at the time of tray attachment, or a recording device.SOLUTION: A medium feeding device comprises: feeding means; a tray which can be attached/detached to/from a device main body; a guide member facing a leading end of a medium stored in the tray and forming a guide slope guiding the medium to a downstream side; and a stopper mechanism including a stopper member which can switch between a regulation state where the stopper member is brought into contact with a medium leading end and regulates movement of the medium and a regulation release state where the medium can advance to the downstream side along the guide slope. The stopper mechanism comprises: switching means switching the stopper member from the regulation state to the regulation release state; and a brake mechanism imparting brake force to switching operation of the stopper member. The stopper member and the brake mechanism have portions overlapping with each other as viewed in a medium width direction while being arranged with a predetermined distance therebetween in the medium width direction intersecting with a conveyance direction of the medium.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a medium feeding device that feeds a medium, and a recording apparatus including the same.

Hereinafter, a printer that is an example of a recording apparatus will be described as an example. The printer is provided with a feeding device that feeds recording paper from a tray (also referred to as a cassette) that stores recording paper, which is an example of a medium.
In particular, in a feeding device in which the tray is mounted in a horizontal posture, a guide slope (also referred to as a separation slope) that guides the leading edge of the paper downstream is provided at a position facing the leading edge of the paper. When set in the apparatus, the leading edge of the sheet faces the guide slope.

Here, when the tray is mounted on the feeding device, particularly when the tray is mounted vigorously, the stored recording sheet may be ejected and the leading end of the sheet may be on the guide slope. In such a state, double feeding of sheets is likely to occur, which is not preferable.
For this reason, conventionally, as shown in Patent Documents 1 and 2, a stopper mechanism that restricts the jumping of paper when the tray is mounted has been adopted.

JP 2013-199352 A JP 2012-180146 A

The conventional stopper mechanism described above employs a damper mechanism using viscous grease, and is configured such that the stopper is retracted after a while after the tray is mounted on the feeding device. With such a configuration, when the tray is mounted, the stopper keeps protruding from the guide slope (state that prevents the paper from jumping out), and then the stopper is retracted from the guide slope so that the recording paper is It will be in the state which can advance to a downstream side along.

However, in the conventional configuration, since the damper mechanism is provided directly under the stopper or on the back side, there is a disadvantage that the height direction dimension and the depth direction dimension of the apparatus increase.
Accordingly, the present invention has been made in view of such a situation, and an object of the present invention is to provide a smaller and more compact medium feeding device or recording device having a stopper mechanism that restricts the jumping of paper when the tray is mounted. It is to provide.

  In order to solve the above-described problem, a medium feeding device according to a first aspect of the present invention contains a feeding unit that feeds a medium, and a medium that can be attached to and detached from an apparatus main body including the feeding unit. And a guide member provided on the apparatus main body, facing the front end of the medium stored in the tray and forming a guide slope for guiding the medium sent out from the tray to the downstream side, and provided on the apparatus main body A regulation state that regulates movement of the medium in contact with the front end of the medium accommodated in the tray, and a regulation release state that releases the regulation state and allows the medium to travel downstream along the guide slope. And a stopper mechanism including a stopper member that is switchable, and the stopper mechanism engages with the tray when the tray is mounted on the apparatus main body to place the stopper member in the restricted state. Switching means for switching to the restriction release state, and a braking mechanism for applying a braking force to the switching operation of the stopper member from the restriction state to the restriction release state, wherein the stopper member and the braking mechanism It is disposed at a predetermined distance in the medium width direction intersecting the transport direction, and has a portion overlapping when viewed from the medium width direction.

  According to this aspect, the stopper member and the braking mechanism are disposed at a predetermined distance in the medium width direction intersecting the medium transport direction, and have a portion that overlaps when viewed from the medium width direction. The stopper member and the braking mechanism do not completely overlap in the apparatus height direction, and do not completely overlap in the apparatus depth direction. Therefore, it is possible to realize a smaller and more compact medium feeding device while having a stopper mechanism for restricting the pop-out of the medium when the tray is mounted.

According to a second aspect of the present invention, in the first aspect, the stopper member and the braking mechanism are disposed using a region formed below the guide slope as viewed from the medium width direction. It is characterized by that.
According to this aspect, since the stopper member and the braking mechanism are arranged using a region formed below the guide slope as viewed from the medium width direction, the stopper member and the braking mechanism are disposed below the guide slope. A small and compact medium feeding apparatus can be realized by effectively using the formed space.

  According to a third aspect of the present invention, in the first or second aspect, the switching unit is engageable with the tray and is slidable along the direction of attaching and detaching the tray; In the medium width direction, it engages with the first slide member on the braking mechanism side and engages with the stopper member on the stopper member side, and follows the tray attachment / detachment direction as the first slide member slides. And a second slide member that switches the state of the stopper member by sliding the slide member, and a slide restricting portion that restricts a slide range of the second slide member is provided on the stopper member side in the medium width direction. It is characterized by.

When the stopper member and the braking mechanism are separated from each other in the medium width direction, a member that links the stopper member and the braking mechanism (hereinafter referred to as a “linking member”) extends in the medium width direction. Because of the form, there is a case where the sliding amount of the linking member on the stopper member side and the sliding amount of the linking member on the braking mechanism side are shifted due to the twisting of the linking member.
Here, in order to accurately realize the restriction state and the restriction release state of the stopper member, it is preferable to accurately restrict the displacement of the stopper member.

  Therefore, in this aspect, the slide restricting portion that restricts the slide range of the second slide member is arranged on the stopper member side in the medium width direction. Thereby, the displacement of the stopper member can be accurately regulated, and the function of the stopper can be exhibited accurately.

  According to a fourth aspect of the present invention, in the third aspect, the fourth aspect includes an urging unit that applies an urging force to the second slide member in a sliding direction of the second slide member, and the urging unit includes: It is provided on the brake mechanism side in the medium width direction.

  According to this aspect, the biasing means that applies a biasing force to the second slide member in the sliding direction of the second slide member is provided, and the biasing means is on the braking mechanism side in the medium width direction. Therefore, the second slide member can be prevented from being twisted as compared with the configuration in which the part that exerts the urging force and the part that exerts the braking force are provided at positions separated from each other. Can slide properly.

According to a fifth aspect of the present invention, in the fourth aspect, the biasing means is interposed between the first slide member and the second slide member, and the first slide member is the tray by the tray. Via a first biasing member that biases the second slide member in the mounting direction when pushed in the mounting direction, and an engaging portion that directly engages the second slide member in the first slide member. And a second urging member that urges the second slide member in a direction opposite to the mounting direction.
According to this aspect, in the configuration including the first urging member and the second urging member, the effect of the fourth aspect described above can be obtained.

According to a sixth aspect of the present invention, there is provided recording means for recording on a medium, and the medium feeding device according to any one of the first to fifth aspects, which feeds the medium toward the recording means. It is characterized by having.
According to this aspect, in the recording apparatus, the same function and effect as in any of the first to fifth aspects described above can be obtained.

FIG. 3 is an external perspective view of the printer according to the invention. FIG. 3 is a perspective view illustrating a state in which the paper discharge tray is developed on the front side in the apparatus depth direction in the printer according to the invention. FIG. 3 is a side cross-sectional view illustrating a medium conveyance path in the printer according to the invention. FIG. 3 is an external perspective view showing a lower medium storage tray and a pickup roller according to the present invention. The perspective view which shows the relationship between a lower side media storage tray and a guide member. The perspective view which shows the control state of the stopper mechanism which concerns on this invention. The disassembled perspective view of a stopper mechanism. FIG. 6 is a perspective view showing a relationship between the medium storage tray and the stopper mechanism in a state where the lower medium storage tray is mounted on the apparatus main body. The perspective view which shows the regulation cancellation | release state of a stopper mechanism. The perspective view which shows the relationship between the 2nd slide member in a control state, and a slide control part. The perspective view which shows the relationship between the 2nd slide member in a regulation cancellation | release state, and a slide control part. The side view which shows the 1st state (regulation state) which shows the relationship between a stopper member and a 2nd slide member. The side view which shows the 2nd state which shows the relationship between a stopper member and a 2nd slide member. The side view which shows the 3rd state which shows the relationship between a stopper member and a 2nd slide member. The side view which shows the 4th state (regulation cancellation | release state) which shows the relationship between a stopper member and a 2nd slide member. The side view which shows the 5th state which shows the relationship between a stopper member and a 2nd slide member. The side view which shows the 6th state which shows the relationship between a stopper member and a 2nd slide member. The side view which shows the relationship between the braking mechanism and stopper member seen from the apparatus width direction. The side view which shows the relationship between the switching means in the restriction release state in a stopper mechanism, and a lower side media storage tray. The side view which shows the relationship between the switching means in the control state in a stopper mechanism, and a lower side media storage tray.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, about the same structure in each Example, the same code | symbol is attached | subjected and it demonstrates only in the first Example, The description of the structure is abbreviate | omitted in a subsequent Example.

  FIG. 1 is an external perspective view of a printer according to the present invention, FIG. 2 is a perspective view showing a state in which a paper discharge tray is developed on the front side in the apparatus depth direction in the printer according to the present invention, and FIG. FIG. 4 is a side sectional view showing a medium conveyance path in the printer, FIG. 4 is an external perspective view showing a lower medium storage tray and a pickup roller according to the present invention, and FIG. 5 is a view of a lower medium storage tray, a guide member, and the like. FIG. 6 is a perspective view showing a restricted state of the stopper mechanism according to the present invention.

  7 is an exploded perspective view of the stopper mechanism. FIG. 8 is a perspective view showing the relationship between the medium storage tray and the stopper mechanism in a state where the lower medium storage tray is mounted on the apparatus main body. FIG. FIG. 10 is a perspective view showing a relationship between the second slide member and the slide restricting portion in the restricted state, and FIG. 11 is a perspective view showing the relationship between the second slide member and the slide restricting portion in the restricted release state. FIG. 12 is a side view showing a first state (restricted state) showing a relationship between the stopper member and the second slide member.

  13 is a side view showing a second state showing the relationship between the stopper member and the second slide member, and FIG. 14 is a side view showing a third state showing the relationship between the stopper member and the second slide member. 15 is a side view showing a fourth state (restriction release state) showing a relationship between the stopper member and the second slide member, and FIG. 16 is a fifth view showing a relationship between the stopper member and the second slide member. 17 is a side view showing a sixth state showing the relationship between the stopper member and the second slide member. FIG. 18 is a side view showing the braking mechanism and the stopper member as viewed from the device width direction. 19 is a side view showing the relationship between the switching means and the lower medium storage tray in the restriction release state in the stopper mechanism. FIG. 20 is a side view showing the relationship in the restriction state in the stopper mechanism. Is a side view showing the relationship between the switching means and the lower medium accommodation tray.

  In the XYZ coordinate system shown in each figure, the X direction is the main scanning direction (movement direction) of the carriage, that is, the width direction of the recording apparatus, the Y direction is the medium transport direction, that is, the depth direction of the recording apparatus, and the Z direction. Indicates the device height direction. In each figure, the + X direction side is the device left side, the -X direction side is the device right side, the -Y direction is the device front side, the + Y direction side is the device back side, and the + Z axis direction side is the device upper side. -Let the Z-axis direction side be a device lower side.

■■■ First Example ■■■■
<<< Printer overview >>>
Referring to FIGS. 1 and 2, the printer 10 includes an apparatus main body 12 and a reading mechanism unit 14 provided on the upper part of the apparatus main body 12. An operation unit 16 is provided on the front side of the apparatus body 12 so as to be rotatable (tilted) with respect to the apparatus body 12. The operation unit 16 is configured to be switchable between a position closed with respect to the apparatus main body 12 (see FIG. 1) and a position rotated with respect to the apparatus main body 12 toward the front side of the apparatus (see FIG. 2). The operation unit 16 is provided with display means 18 such as a display panel.

  A cover 20 is disposed below the operation unit 16 on the front side of the apparatus main body 12. The cover 20 is attached to the apparatus front side of the medium accommodating portion 22 (see FIG. 3) for accommodating a medium so as to be rotatable with respect to the medium accommodating portion 22. The cover 20 is urged in a closing direction with respect to the medium accommodating portion 22 by an urging means (not shown). The medium accommodating portion 22 is detachably attached to the apparatus main body 12 from the front side of the apparatus main body 12. As shown in FIG. 1, the cover 20 constitutes at least a part of the front surface of the apparatus main body 12 when the cover 20 is attached to the apparatus main body 12.

  Referring to FIG. 3, the medium storage unit 22 is configured as a tray for storing a medium, and includes an upper medium storage tray 22A and a lower medium storage tray 22B. The upper medium storage tray 22A is movable in the apparatus depth direction with respect to the lower medium storage tray 22B by a driving unit (not shown) provided in the apparatus main body 12. Specifically, the upper medium storage tray 22A is located on the front side in the apparatus depth direction, and the depth of the apparatus with respect to the non-feed state in which the stored medium is not fed (see FIG. 3) and the non-feed state. It moves to the direction back side, and it is comprised so that switching to the feedable state which feeds the accommodated medium is possible. In the following description, the medium accommodation unit 22 will be described unless it is necessary to distinguish between them.

  Referring to FIGS. 1 to 3, the reading mechanism unit 14 includes a document table 24 and a document table cover 26. The document table 24 is formed of a transparent glass plate as an example, and is configured such that a document can be placed on the upper surface thereof. The document table cover 26 is configured to be rotatable with respect to the document table 24, and can be switched between a closed posture (see FIG. 1) covering the document table 24 and an open posture exposing the document table 24. .

  Then, the document table cover 26 is rotated and opened with respect to the document table 24, the document table 24 is exposed, the document is set on the upper surface, and the document table cover 26 is closed. The original can be read.

  A medium receiving tray 28 is provided in the apparatus main body 12. The medium receiving tray 28 is configured to be switchable between a state accommodated in the apparatus main body 12 shown in FIG. 1 and a state developed on the front side of the apparatus shown in FIG. The medium receiving tray 28 can protrude from the apparatus main body 12 when the operation unit 16 rotates to the front side in the apparatus depth direction. The medium receiving tray 28 pushes the cover 20 toward the front side in the apparatus depth direction and protrudes toward the front side of the apparatus main body 12.

  As shown in FIGS. 1 and 2, a medium supply port cover 30 is attached to the upper part on the back side of the apparatus main body 12 so as to be rotatable with respect to the apparatus main body 12. When the medium supply port cover 30 is opened, the medium supply port 32 is exposed, and the medium can be inserted into the apparatus main body 12 through the medium supply port 32.

<<< About Media Transport Path >>>
Next, the medium conveyance path 34 of the medium in the apparatus main body 12 will be described with reference to FIG. In FIG. 3, a thick solid line with a reference symbol P indicates a passage trajectory (one example) of the medium conveyed along the medium conveyance path 34 from the medium storage unit 22 to the medium receiving tray 28.

  A medium feeding device 36 is provided at the lower portion of the apparatus main body 12. The medium feeding device 36 includes the medium accommodating portion 22, a pickup roller 38 as “feeding means”, a guide member 40, and a stopper mechanism 42. As an example, the medium feeding device 36 is configured to be able to feed a medium accommodated in the medium accommodating unit 22 toward a recording unit 54 including a recording head 60 described later.

  The pickup roller 38 is rotationally driven by a drive source (not shown), and is provided above the medium storage unit 22 in the apparatus height direction. The pickup roller 38 is rotatably supported on the tip end side of a roller unit 46 that swings around a swing shaft 44 (see also FIG. 4).

  A guide member 40 (see also FIG. 5) is provided on the back side of the apparatus main body 12 in the apparatus depth direction with respect to the medium storage section 22 in a state where the medium storage section 22 is attached to the apparatus main body 12. Referring to FIG. 5, the guide member 40 is provided with a plurality of guide slopes 40a that are inclined toward the upper side in the apparatus height direction at intervals in the apparatus width direction.

  When the pickup roller 38 sends out the medium stored in the medium storage unit 22 to the downstream side in the transport direction, the medium is guided to the guide slope 40 a and sent to the reverse roller 48. Around the reversing roller 48, nip rollers 50a, 50b, and 50c are provided so as to be driven to rotate with respect to the reversing roller 48.

  A transport roller pair 52, a recording unit 54, and a discharge roller pair 56 are provided in this order on the downstream side of the reverse roller 48 in the transport direction. The medium sent by the reversing roller 48 is sent to the recording unit 54 via the conveying roller pair 52.

  Here, the recording unit 54 includes a carriage 58, a recording head 60 as “recording means”, and a medium support member 62. A recording head 60 is provided below the carriage 58. The carriage 58 is configured to reciprocate in the apparatus width direction of the apparatus body 12. The recording head 60 is configured to eject ink toward the lower side in the apparatus height direction.

  Further, the medium support member 62 is disposed in a region facing the recording head 60 below the recording head 60. The medium support member 62 supports the lower surface (the surface opposite to the recording surface) of the medium that has been transported to the region facing the recording head 60 by the transport roller pair 52. Then, the recording head 60 discharges ink to the medium supported by the medium support member 62 and performs recording on the recording surface of the medium.

  Then, the medium on which the recording has been executed is nipped by a discharge roller pair 56 provided on the downstream side in the transport direction of the recording unit 54 and is directed toward the medium receiving tray 28 (see FIG. 2) protruding to the front side of the apparatus. The paper is ejected.

  When the medium supply port cover 30 is opened and a medium is inserted into the apparatus main body 12, the medium is guided by the medium guide path 64 and conveyed to the recording unit 54, and recording is performed in the recording unit 54. Then, after recording is performed, it is discharged to the medium receiving tray 28.

  When recording is performed on the first surface (recording surface) of the medium in the recording unit 54 and then recording is performed on the second surface (lower surface) opposite to the first surface, the transport roller pair 52 is reversed. Then, the medium is transported upstream in the transport direction. The medium conveyed upstream in the conveying direction is nipped between the reverse roller 48 and the nip roller 50c. Then, the medium is reversed between the first surface and the second surface by the reversing roller 48 and is transported to the recording unit 54 again. After the recording on the second surface is executed by the recording unit 54, the medium receiving tray 28. It is discharged toward

<<< About the stopper mechanism >>>
Next, the lower medium storage tray 22B, the guide member 40, and the stopper mechanism 42 will be described with reference to FIGS. As shown in FIG. 4, the lower medium storage tray 22B is formed in a box shape. In the lower medium storage tray 22B, a plurality of protrusions 68 are formed at the back side end portion 66 in the apparatus depth direction.

  3 and 5, in the guide member 40, the guide inclined surface 40a is configured as an inclined surface that is inclined to extend upward in the apparatus height direction toward the back side in the apparatus depth direction. As shown in FIG. 3, a triangular region is formed in the guide member 40 below the guide slope 40a. As shown in FIGS. 5 and 6, a stopper mechanism 42 is disposed in a triangular area formed below the guide slope 40 a.

  Referring to FIG. 6, a stopper mechanism 42 is provided on the bottom 40 b of the guide member 40. Further, as shown in FIG. 7, the stopper mechanism 42 includes a stopper member 70, a switching means 72, a braking mechanism 74 and an urging means 76. Further, the switching means 72 includes a first slide member 78 and a second slide member 80. The biasing means 76 includes a first biasing member 82 and a second biasing member 84. Here, the 1st biasing member 82 and the 2nd biasing member 84 are comprised as a compression coil spring as an example.

  The stopper member 70 includes a rotation shaft 70a, a medium contact portion 70b, and a guide shaft 70c. The rotation shaft 70 a is received by a bearing 40 c provided on the bottom 40 b of the guide member 40. And the stopper member 70 is attached with respect to the bottom part 40b so that rotation is possible.

  The first slide member 78 is associated with at least a part of the tray abutting portion 78a that abuts against the rear side end portion 66 of the lower medium storage tray 22B, the first urging member attaching portion 78b, and the second slide member 80. A mating engagement portion 78c and a second urging member attachment portion 78d are provided.

  A second urging member mounting portion 40 d is provided on the bottom portion 40 b of the guide member 40. One end portion of the second urging member 84 is attached to the second urging member attaching portion 78d of the second slide member 80, and the second urging member 84 is attached to the second urging member attaching portion 40d of the bottom portion 40b. The other end of is attached.

  And the 2nd slide member 80 is attached to the bottom part 40b so that it can advance / retreat to the apparatus depth direction in the state which received the urging | biasing force of the 2nd urging | biasing member 84. As shown in FIG. Here, the second urging member 84 urges the second slide member 80 toward the front side in the apparatus depth direction.

  Further, in the bottom portion 40b, a lubricant storage portion 40e constituting a part of the braking mechanism 74 is formed at a position close to the second urging member attachment portion 40d. The lubricant reservoir 40e is formed in a box shape and is opened toward the upper side in the apparatus height direction. In the lubricant reservoir 40e, grease is stored as an example of a lubricant, particularly as an example of a viscous material. A rib 40f extending upward in the apparatus height direction is formed in the lubricant reservoir 40e.

  Further, slide restricting portions 40g and 40h (see FIGS. 7 and 10) are formed at positions close to the stopper member 70 in the apparatus width direction in the bottom portion 40b. The slide restricting portions 40g and 40h will be described later.

  The second slide member 80 extends in the apparatus width direction, and a cam portion 80a is provided at an end portion near the stopper member 70, and a first urging member attaching portion 80b is provided at the opposite end portion, An engaged portion 80 c that engages with the engaging portion 78 c of the first slide member 78 is provided. Further, the second slide member 80 is formed with a plurality of ribs 80d that protrude downward in the apparatus height direction at positions corresponding to the lubricant reservoirs 40e in the apparatus width direction and constitute a part of the braking mechanism 74. Has been.

  Further, in the second slide member 80, there are a front side slide restricted portion 80e (see FIGS. 10 and 12) and a rear side slide restricted portion 80f (see FIGS. 12). The front side slide restricted part 80e and the back side slide restricted part 80f will be described later. A concave portion 80k that receives at least a part of the protruding portion 68 when the lower medium storage tray 22B is attached to the apparatus main body 12 is formed at a position close to the cam portion 80a in the apparatus width direction.

  As shown in FIG. 6, the second slide member 80 has a plurality of ribs 80d received in the lubricant reservoir 40e in a state of being attached to the bottom 40b. A rib 40f is received between the ribs 80d. That is, the rib 40f and the rib 80d mesh with each other.

  Since the grease is stored in the lubricant reservoir 40e, the grease is interposed between the rib 40f and the rib 80d, and the second slide member 80 is moved to the lubricant reservoir 40e by the viscosity of the grease. On the other hand, a braking force is generated when it is displaced. That is, the lubricant reservoir 40e, the rib 40f, and the rib 80d function as the braking mechanism 74. The brake mechanism 74 has a configuration in which ribs are arranged in a comb-like shape and grease is interposed as an example. However, instead of this configuration, a damper using hydraulic pressure or pneumatic pressure may be used.

  Further, in the present embodiment, the braking mechanism 74 is disposed at a position away from the stopper member 70 in the apparatus width direction using the space below the guide slope 40a. Thereby, space saving can be achieved.

  One end of the first urging member 82 is received by the first urging member mounting portion 80 b of the second slide member 80, and the other end of the first urging member 82 is the first end of the first slide member 78. One urging member mounting portion 78b is inserted. The urging means 76, that is, the first urging member 82 and the second urging member 84 are disposed on the side where the braking mechanism 74 is provided in the apparatus width direction.

  Further, since the braking mechanism 74 is disposed near the urging means 76 (the first urging member 82 and the second urging member 84) in the apparatus width direction, when the braking force is generated in the braking mechanism 74, it is caused by galling or the like. Disturbances such as an increase in friction load can be suppressed, and the braking mechanism 74 can be operated smoothly.

  Further, in a state where the first slide member 78 and the second slide member 80 are respectively attached to the bottom portion 40b, the engaging portion 78c of the first slide member 78 is engaged with the engaged portion 80c of the second slide member 80. doing. More specifically, the engaged portion 80 c of the second slide member 80 is pressed against the engaging portion 78 c of the first slide member 78 by the urging force of the first urging member 82.

  Further, the guide shaft 70 c of the stopper member 70 is inserted into the cam portion 80 a of the second slide member 80. When the second slide member 80 moves in the apparatus depth direction, the cam portion 80a guides the guide shaft 70c and swings the stopper member 70 with respect to the bottom portion 40b.

  As shown in FIG. 18, when the stopper member 70 and the braking mechanism 74 are viewed from the braking mechanism 74 side in the apparatus width direction, at least a part of the stopper member 70 and at least a part of the braking mechanism 74 are in the apparatus depth direction. The stopper member 70 and the brake mechanism 74 are disposed on the bottom 40b so as to overlap each other. Therefore, the size of the medium feeding device 36 in the device depth direction can be reduced. In addition, the dashed-two dotted line in FIG. 18 has shown typically the guide slope 40a.

  Hereinafter, the operation of the stopper mechanism 42 will be described with reference to FIGS. 8 to 11, 19 and 20. The stopper mechanism 42 is in a restricted state in which the medium abutting portion 70b of the stopper member 70 shown in FIG. 6 abuts on the front end of the medium accommodated in the lower medium accommodating tray 22B and restricts the movement of the medium, as shown in FIG. As described above, the restriction state is released, and the restriction release state in which the medium stored in the lower medium storage tray 22B can travel downstream in the transport direction along the guide inclined surface 40a of the guide member 40 can be switched.

  Referring to FIG. 19, in the stopper mechanism 42, when the tray contact portion 78a of the first slide member 78 is separated from the rear end portion 66 of the lower medium storage tray 22B, the tray contact portion 78a is guided by the guide member 40. It protrudes from the guide slope 40a to the front side of the apparatus depth direction. That is, the tray abutting portion 78a protrudes into the medium conveyance path 34 when the stopper mechanism 42 is in a deregulated state.

  Further, as shown in FIG. 19, the thickness of the tray contact portion 78a of the first slide member 78 in the apparatus height direction is set to L1. The thickness of the rear side end 66 of the lower medium storage tray 22B in the apparatus height direction is set to L2. As an example, the thickness L1 of the tray contact portion 78a is set to be larger than the thickness L2 of the back side end portion 66. As a result, when the lower medium storage tray 22B is pushed into the apparatus main body 12 to the deepest position in the apparatus depth direction, the back-side end 66 can be reliably brought into contact with the tray contact part 78a.

  Referring to FIG. 20, when the lower medium storage tray 22B is pushed into the apparatus main body 12 to the deepest position in the apparatus depth direction, the rear side end portion 66 of the lower medium storage tray 22B becomes the first slide member. The first slide member 78 is pushed to the rear side in the apparatus depth direction against the urging force of the first urging member 82 and the second urging member 84. As a result, the tray contact portion 78a is pushed closer to the back side in the apparatus depth direction than the guide slope 40a of the guide member 40. That is, the tray contact portion 78a is retracted from the medium conveyance path 34 when the stopper mechanism 42 is in a restricted state. At this time, as an example, the protrusion 68 at the center portion in the apparatus width direction of the lower medium storage tray 22B is received by the concave portion 80k of the stopper mechanism 42.

  As shown in FIG. 9, when the first slide member 78 is pushed to the back side in the apparatus depth direction against the biasing force of the first biasing member 82 and the second biasing member 84, the first slide member 78 is The second slide member 80 is pressed in the apparatus depth direction via the first urging member 82. However, the braking force by the braking mechanism 74 acts on the second slide member 80. Specifically, when the first slide member 78 presses the second slide member 80 toward the back side in the apparatus depth direction via the first biasing member 82, the brake mechanism 74 has the second slide member 80. A braking force is generated to brake the slide toward the rear side in the apparatus depth direction.

  As a result, when the first slide member 78 slides toward the rear side in the apparatus depth direction, a braking force acts on the second slide member 80 toward the front side in the apparatus depth direction. Since the slide in the device depth direction of the second slide member 80 is in a state where the brake is applied by the braking force with respect to the slide of the first slide member 78 toward the back side in the device depth direction, the second slide member The slide in the device depth direction of 80 is delayed. That is, a time lag occurs between the sliding operation of the first slide member 78 and the sliding operation of the second slide member 80.

  Further, as the second slide member 80 slides toward the back side in the apparatus depth direction, the stopper member 70 rotates from the restricted state to the back side in the apparatus depth direction and switches to the restriction release state. Here, since the braking force by the braking mechanism 74 acts on the second slide member 80, when the lower medium storage tray 22B is mounted on the apparatus main body 12 and the first slide member 78 is pushed in the apparatus depth direction, The state switching of the stopper member 70 is delayed with respect to the slide of the first slide member 78.

  As a result, when the lower medium storage tray 22B is mounted on the apparatus main body 12, the stopper member 70 is in a restricted state, so that the medium stored in the lower medium storage tray 22B is inertial or the like on the rear side in the apparatus depth direction. Even if it tries to move, it contacts the medium contact portion 70b of the stopper member 70 in the restricted state, and the movement of the medium to the back side in the apparatus depth direction is restricted. Then, after the movement of the medium in the apparatus depth direction is restricted, the restriction state of the stopper member 70 is released, so that the medium accommodated in the lower medium accommodation tray 22B can be conveyed along the medium conveyance path 34. .

  Referring to FIG. 10, when the stopper member 70 is in the restricted state, that is, in the state where the second slide member 80 is located on the front side in the apparatus depth direction, the front side slide restricted portion 80 e of the second slide member 80 is The slide restricting portion 40g provided on the bottom portion 40b is engaged. That is, the slide restricting portion 40g restricts the sliding of the second slide member 80 toward the front side in the apparatus depth direction.

  In addition, referring to FIG. 11, when the stopper member 70 is in the restriction release state, that is, in the state where the second slide member 80 is located on the back side in the apparatus depth direction, the rear side slide restricted portion 80f of the second slide member 80 is referred to. Is engaged with a slide restricting portion 40h provided on the bottom portion 40b. That is, the slide restricting portion 40g restricts the sliding of the second slide member 80 toward the front side in the apparatus depth direction.

  That is, the slide range in the apparatus depth direction of the second slide member 80 is restricted by the slide restriction portions 40g and 40h provided on the stopper member 70 side, not on the end portions on the braking mechanism 74 and the first slide member 78 side. Therefore, the displacement of the stopper member 70 accompanying the sliding operation of the second slide member 80 can be accurately regulated at a position close to the stopper member 70, and the function of the stopper mechanism 42 can be exhibited accurately.

  Next, the switching operation between the restricted state and the restricted state of the stopper member 70 will be described with reference to FIGS. The cam portion 80a has a cam surface 86 into which the guide shaft 70c of the stopper member 70 is inserted and guides the guide shaft 70c. FIG. 12 shows a state where the stopper member 70 is in a restricted state.

  In this state, the medium contact portion 70b of the stopper member 70 protrudes toward the lower medium storage tray 22B with respect to the guide slope 40a of the guide member 40 in the apparatus depth direction. For this reason, even if the medium stored in the lower medium storage tray 22B attempts to move to the back side in the apparatus depth direction, the leading edge of the medium comes into contact with the medium contact portion 70b, so that the medium moves to the back side in the apparatus depth direction. Is regulated. In addition, the dashed-two dotted line in FIG. 12 thru | or 17 has shown the guide slope 40a typically.

  Further, the guide shaft 70 c is in contact with the restriction surface 86 a on the cam surface 86. In this state, even if the stopper member 70 tries to rotate to the back side in the apparatus depth direction, the guide shaft 70c is restricted by the restriction surface 86a. Thereby, the stopper member 70 cannot be switched from the restricted state to the restricted state. In this state, the front-side slide restricted portion 80e of the second slide member 80 is engaged with the slide restricting portion 40g, and defines the position of the second slide member 80 in the apparatus depth direction.

  Next, as shown in FIG. 13, when the first slide member 78 is pushed into the rear side in the apparatus depth direction by the lower medium storage tray 22B, the first slide member 78 is delayed after sliding toward the rear side in the apparatus depth direction. The 2 slide member 80 also starts to slide to the back side in the apparatus depth direction. Thereby, the guide shaft 70c slides relatively to the front side in the apparatus depth direction along the regulating surface 86a on the cam surface 86 of the second slide member 80. Further, the engagement state between the front side slide restricted portion 80e of the second slide member 80 and the slide restricting portion 40g is released, and the front side slide restricted portion 80e is separated from the slide restricting portion 40g.

  As shown in FIG. 14, when the second slide member 80 is further slid to the rear side in the apparatus depth direction, the guide shaft 70 c is connected to the first posture switching surface 86 b provided on the front side in the apparatus depth direction of the cam surface 86. Contact.

  As shown in FIG. 15, when the second slide member 80 is displaced to the deepest position on the back side in the apparatus depth direction, that is, the state where the back side slide restricted portion 80f is in contact with the slide restricting portion 40h, the guide shaft 70c moves to the apparatus height direction lower side along the 1st attitude | position switching surface 86b. With this operation, the stopper member 70 rotates to the back side in the apparatus depth direction with respect to the bottom 40b, and is switched from the restricted state to the restricted state. When the stopper member 70 is in the deregulated state, the medium contact portion 70b is displaced to the back side in the apparatus depth direction with respect to the guide slope 40a and does not protrude from the guide slope 40a to the front side in the apparatus depth direction. Does not interfere with media transport. That is, the medium stored in the medium storage unit 22 can be transported downstream in the transport direction.

  Next, when the stopper member 70 is in the deregulated state, the first slide member 78 of the second urging member 84 is moved when the lower medium storage tray 22B is moved to the front side in the apparatus depth direction with respect to the apparatus main body 12. It is urged to the front side in the apparatus depth direction by the urging force and slides to the front side in the apparatus depth direction. And according to this sliding operation, the 2nd slide member 80 also starts a slide to the apparatus depth direction front side. Thereby, the back side slide restricted part 80f is separated from the slide restricting part 40h.

  Then, as shown in FIG. 16, since the second slide member 80 slides to the front side in the apparatus depth direction, the guide shaft 70c is separated from the first posture switching surface 86b, and is in the apparatus depth direction with respect to the second slide member 80. Move relative to the back side. The guide shaft 70 c is engaged with a second posture switching surface 86 c provided on the cam surface 86.

  As shown in FIG. 17, when the second slide member 80 is further slid to the front side in the apparatus depth direction, the guide shaft 70c is moved upward in the apparatus height direction along the second posture switching surface 86c. In other words, the stopper member 70 is raised from the collapsed state (regulation release state) to the front side in the apparatus depth direction. Further, when the second slide member 80 slides to the front side in the apparatus depth direction, the guide shaft 70c moves to the restricting surface 86a as shown in FIG. 12, and the stopper member 70 enters the restricted state.

<<< Example of change of embodiment >>>
(1) As an example, the braking mechanism 74 is provided at one location in the apparatus width direction. However, instead of this configuration, a plurality of braking mechanisms 74 may be provided.
(2) Although the stopper member 70 is configured to be provided in one position in the apparatus width direction as an example, a configuration in which a plurality of stopper members 70 are provided instead of this configuration may be employed.
(3) Although the braking mechanism 74 is arranged near the urging means 76 in consideration of twisting, the urging means 76 may be provided on both sides of the braking mechanism 74 instead of this configuration.

  In summary, the medium feeding device 36 includes a pickup roller 38 that feeds the medium, a medium housing portion 22 that houses the medium that can be attached to and detached from the device main body 12 including the pickup roller 38, and a device main body. 12, provided on the apparatus main body 12, and a guide member 40 that forms a guide slope 40 a that opposes the front end of the medium accommodated in the medium accommodating portion 22 and guides the medium fed from the medium accommodating portion 22 to the downstream side. And a restriction state in which the movement of the medium is restricted in contact with the front end of the medium accommodated in the medium accommodation portion 22, and a restriction release state in which the restriction state is released and the medium can travel downstream along the guide slope 40a. And a stopper mechanism 42 including a stopper member 70 that can be switched. When the medium accommodating portion 22 is mounted on the apparatus main body 12, the stopper mechanism 42 Switching means 72 that engages the container 22 to switch the stopper member 70 from the restricted state to the unregulated state, a braking mechanism 74 that applies a braking force to the switching operation of the stopper member 70 from the restricted state to the unregulated state, The stopper member 70 and the braking mechanism 74 are arranged at a predetermined distance in the apparatus width direction that is the medium width direction that intersects the medium conveyance direction, and are viewed from the apparatus width direction that is the medium width direction. And have overlapping parts.

  According to the above configuration, the stopper member 70 and the braking mechanism 74 are arranged at a predetermined distance in the apparatus width direction that is the medium width direction that intersects the medium conveyance direction, and the apparatus width that is in the medium width direction. Since there is a portion that overlaps when viewed from the direction, the stopper member 70 and the braking mechanism 74 do not completely overlap in the apparatus height direction, and do not completely overlap in the apparatus depth direction. Accordingly, it is possible to realize a smaller and more compact medium feeding device 36 while including the stopper mechanism 42 that restricts the jumping-out of the medium when the medium accommodating unit 22 is mounted.

  The stopper member 70 and the braking mechanism 74 are arranged using a region formed below the guide slope 40a when viewed from the apparatus width direction that is the medium width direction. According to this configuration, a small and compact medium feeding device 36 can be realized by effectively using the space formed below the guide slope 40a.

  The switching means 72 is engageable with the medium accommodating portion 22 and is slidable along the attaching / detaching direction of the medium accommodating portion 22, and the brake mechanism 74 side in the apparatus width direction that is the medium width direction. The stopper member 70 engages with the first slide member 78 and engages with the stopper member 70 on the stopper member 70 side, and slides along the attaching / detaching direction of the medium accommodating portion 22 as the first slide member 78 slides. The slide restricting portions 40g and 40h for restricting the slide range of the second slide member 80 are provided on the stopper member 70 side in the apparatus width direction that is the medium width direction. ing.

  When the stopper member 70 and the braking mechanism 74 are separated from each other in the apparatus width direction, which is the medium width direction, a member that links the stopper member 70 and the braking mechanism 74 (hereinafter referred to as a “linking member”) is the medium width direction. Since it takes a form extending in the apparatus width direction, there is a case in which the sliding amount of the linking member on the stopper member 70 side and the sliding amount of the linking member on the braking mechanism 74 side are shifted due to the twisting of the linking member. is there. Here, in order to accurately realize the restriction state and the restriction release state of the stopper member 70, it is preferable to accurately restrict the displacement of the stopper member 70.

  Therefore, in the configuration described above, the slide restricting portions 40g and 40h that restrict the slide range of the second slide member 80 are arranged on the stopper member 70 side in the apparatus width direction that is the medium width direction. Thereby, the displacement of the stopper member 70 can be regulated accurately, and the function of the stopper member 70 can be exhibited accurately.

  There is a biasing means 76 that applies a biasing force to the second slide member 80 in the sliding direction of the second slide member 80, and the biasing means 76 is on the braking mechanism 74 side in the apparatus width direction that is the medium width direction. Is provided. According to this configuration, the second slide member 80 can be prevented from being twisted and the second slide member 80 can be appropriately compared with the configuration in which the portion that exerts the urging force and the portion that exerts the braking force are provided at separate positions. Can be slid.

  The urging means 76 is interposed between the first slide member 78 and the second slide member 80, and when the first slide member 78 is pushed by the medium storage unit 22 in the mounting direction of the medium storage unit 22, The second slide member 80 is mounted in the mounting direction via a first biasing member 82 that biases the two slide members 80 in the mounting direction and an engaging portion 78c that directly engages the second slide member 80 in the first slide member 78. And a second biasing member 84 that biases in the opposite direction.

  The printer 10 includes a recording head 60 that records on a medium, and a medium feeding device 36 that feeds the medium toward the recording head 60.

In this embodiment, the stopper mechanism 42 according to the present invention is applied to an ink jet printer as an example of a recording apparatus. However, the present invention can be applied to other liquid ejecting apparatuses in general.
Here, the liquid ejecting apparatus uses an ink jet recording head, and is not limited to a recording apparatus such as a printer, a copier, and a facsimile machine that discharges ink from the recording head to perform recording on a recording medium. And a device for ejecting a liquid corresponding to the application from a liquid ejecting head corresponding to the ink jet recording head to an ejected medium corresponding to the recording medium, and attaching the liquid to the ejected medium.

  In addition to the recording head, as a liquid ejecting head, a color material ejecting head used for manufacturing a color filter such as a liquid crystal display, and an electrode material (conductive paste) used for forming an electrode such as an organic EL display or a surface emitting display (FED) Examples thereof include an ejection head, a bioorganic matter ejection head used for biochip production, and a sample ejection head as a precision pipette.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.

DESCRIPTION OF SYMBOLS 10 ... Printer, 12 ... Apparatus main body, 14 ... Reading mechanism part, 16 ... Operation part, 18 ... Display means, 20 ... Cover, 22 ... Medium accommodating part, 22A ... Upper medium accommodating tray, 22B ... Lower side medium accommodating tray, 24 ... Document table, 26 ... Document table cover, 28 ... Medium receiving tray, 30 ... Medium supply port cover, 32 ... Medium supply port, 34 ... Medium conveyance path, 36 ... Medium feeding device, 38 ... Pickup roller, 40 ... Guide member, 40a ... guide slope, 40b ... bottom, 40c ... bearing, 40d, 78d ... second urging member mounting part, 40e ... lubricant storage part, 40f, 80d ... rib, 40g, 40h ... slide restricting part, 42 ... Stopper mechanism, 44 ... Oscillating shaft, 46 ... Roller unit, 48 ... Reversing roller, 50a, 50b, 50c ... Nip roller, 52 ... Conveying roller pair, 54 ... Recording 56 ... Discharge roller pair, 58 ... carriage, 60 ... recording head, 62 ... medium support member, 64 ... medium guide path, 66 ... back side end, 68 ... projection, 70 ... stopper member, 70a ... rotating shaft 70b: medium contact portion, 70c: guide shaft, 72: switching means, 74: braking mechanism, 76: biasing means, 78: first slide member, 78a: tray contact portion, 78b, 80b: first attachment Force member mounting portion, 78c ... engaging portion, 80 ... second slide member, 80a ... cam portion, 80c ... engaged portion, 80e ... front side slide restricted portion, 80f ... back side slide restricted portion, 80k ... Recessed portion, 82 ... first urging member, 84 ... second urging member, 86 ... cam surface, 86a ... regulating surface, 86b ... first posture switching surface, 86c ... second posture switching surface, L1 ... tray contact Part thickness, L2...

Claims (6)

A feeding means for feeding the medium;
A tray that accommodates a medium that is detachable from an apparatus main body including the feeding unit;
A guide member provided in the apparatus main body, facing a front end of a medium accommodated in the tray, and forming a guide slope that guides the medium sent out from the tray to the downstream side;
A regulation state that is provided in the apparatus main body and that restricts the movement of the medium in contact with the front end of the medium accommodated in the tray; and that the regulation state is released and the medium can travel downstream along the guide slope. A restriction mechanism including a stopper member capable of switching between a deregulated state to be
The stopper mechanism, when the tray is mounted on the apparatus main body, engages with the tray and switches the stopper member from the restricted state to the restricted state;
A braking mechanism for applying a braking force to the switching operation of the stopper member from the restricted state to the restricted state,
The stopper member and the braking mechanism are disposed at a predetermined distance in the medium width direction that intersects the medium conveyance direction, and have a portion that overlaps when viewed from the medium width direction.
A medium feeding device. 2. The medium feeding device according to claim 1, wherein the stopper member and the braking mechanism are arranged using a region formed below the guide slope as viewed from the medium width direction.
A medium feeding device. 3. The medium feeding device according to claim 1, wherein the switching unit is engageable with the tray and is slidable in a direction in which the tray is attached and detached.
In the medium width direction, it engages with the first slide member on the braking mechanism side and engages with the stopper member on the stopper member side, and follows the tray attachment / detachment direction as the first slide member slides. A second slide member that switches the state of the stopper member by sliding the
A slide restricting portion for restricting a slide range of the second slide member is provided on the stopper member side in the medium width direction;
A medium feeding device. The medium feeding device according to claim 3, further comprising a biasing unit that applies a biasing force to the second slide member in a sliding direction of the second slide member,
The biasing means is provided on the braking mechanism side in the medium width direction;
A medium feeding device. 5. The medium feeding apparatus according to claim 4, wherein the biasing means is interposed between the first slide member and the second slide member, and the first slide member is attached to the tray by the tray. A first biasing member that biases the second slide member in the mounting direction when pushed by
A second urging member that urges the second slide member in a direction opposite to the mounting direction via an engaging portion that directly engages with the second slide member in the first slide member;
A medium feeding device. Recording means for recording on a medium;
The medium feeding device according to any one of claims 1 to 5, wherein the medium is fed toward the recording unit.
Recording device.

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