JP4450189B2 - Recording device - Google Patents

Description

  The present invention relates to a recording apparatus that performs recording on a recording medium, and in particular, a guide member that defines a distance between the recording medium and the recording head, a discharge driving roller that discharges the recording medium on which recording has been performed, and the discharge drive The present invention relates to a recording apparatus including: a discharge driven roller that rotates in contact with a roller; a discharge driven roller support frame that supports the discharge driven roller; and a main frame that supports the plurality of components. The present invention also relates to a liquid ejecting apparatus.

Here, the liquid ejecting apparatus uses an ink jet recording head, and is not limited to a recording apparatus such as a printer, a copying machine, and a facsimile machine that discharges ink from the recording head to perform recording on a recording medium. And a device that ejects a liquid corresponding to the application from a liquid ejecting head corresponding to the ink jet recording head to an ejected medium corresponding to a recording medium, and adheres 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.

  As an example of the recording apparatus or the liquid ejecting apparatus, there is an ink jet printer (hereinafter referred to as “printer”). The printer includes a guide member (also called a platen) that defines the distance between the printing paper and the recording head at a position facing the recording head that ejects ink droplets onto the printing paper as an example of a recording medium. The guide member has a shape extending in the main scanning direction of the recording head, and supports the printing paper from below, thereby defining the distance between the printing paper and the recording head.

On the upstream side of the guide member, a transport (paper feed) roller for transporting the printing paper to the recording head side is provided, and on the downstream side of the guide member, a discharge (discharge) for discharging the printed printing paper is performed. (Paper) rollers are provided. The conveyance roller includes a conveyance driving roller that is formed by a shaft extending in the width direction of the printing paper and is rotationally driven, and a conveyance driven roller that is rotated in contact with the conveyance driving roller. The discharge roller is provided so as to be localized on a rotation shaft extending in the width direction of the printing paper and is rotated and driven, and a discharge driven roller that is driven to rotate in contact with the discharge drive roller. , And is configured. The discharge driven roller is provided on a discharge driven roller support frame having a shape extending in the main scanning direction of the recording head so as to be localized in the main scanning direction.
The above-described components such as the guide member, the conveyance drive roller, the discharge drive roller, and the discharge driven roller support frame are attached to the frame material constituting the base of the printer, like the subframe described in Patent Document 1. ing.

JP 2002-347304 A

However, when attaching the plurality of components to one frame material, it is necessary to attach individual components to one frame material in order, which is not always efficient.
In addition, the frame material is generally formed of a metal material to ensure strength, and the guide member may be formed of a resin material because its shape and structure are likely to be complicated. Depending on the difference in expansion coefficient, for example, stress may be generated in the guide member, causing deformation. In such a case, the distance between the printing paper and the recording head (also referred to as a platen gap) becomes non-uniform. There is a possibility that the recording quality is lowered. Such a problem may be caused by a change in temperature. In addition, since the initial component accuracy is low, the guide member may be attached to the frame material, resulting in similar deformation. In addition, when the discharge driven roller support frame is fixed to the frame material with screws or the like, stress is generated in the discharge driven roller support frame due to a deviation in dimensional relationship due to secular change, and the discharge driven roller is also the same as the guide member. There is also a risk of deformation of the support frame. When the discharge driven roller support frame is deformed, the position of the discharge driven roller changes, which may cause the discharge driven roller to come into strong contact with the printing paper and form a contact mark on the printing surface.

  Accordingly, the present invention has been made in view of such a situation, and the object of the present invention is to improve the assemblability of the apparatus and to hardly cause deformation of the member after the apparatus is assembled due to a difference in thermal expansion coefficient or a dimensional error. It is to provide a recording apparatus or a liquid ejecting apparatus.

  In order to solve the above-described problems, a first aspect of the present invention includes a recording head for recording on a recording medium, a shape extending in the main scanning direction of the recording head, and provided at a position facing the recording head. Attached to a guide member for defining the distance between the recording medium and the recording head, and a discharge driving roller rotating shaft extending in the main scanning direction of the recording head, and provided on the downstream side of the recording head. A discharge driving roller that discharges a recording medium on which recording has been performed by rotating in contact with the medium, a discharge driven roller that rotates in contact with the discharge driving roller, and a shape that extends in the main scanning direction of the recording head And a discharge driven roller support frame that supports the discharge driven roller, the guide member, the discharge driven roller support frame, and the discharge drive low And a main frame that supports a rotation shaft, wherein the guide member is divided into an upstream first guide member and a downstream second guide member in a recording medium conveyance direction. The first guide member and the second guide member are connectable by snap-type connecting means, and the second guide member and the discharge driven roller support frame are integrated to form a unit. The unit is configured to be attachable to the main frame by connecting the second guide member to the first guide member supported by the main frame.

  According to the above aspect, the guide member, the discharge driving roller rotation shaft, and the discharge driven roller support frame are supported by the main frame, and the guide member is connected to the first guide member on the upstream side. The second guide member is divided into a downstream second guide member, and the second guide member and the discharge driven roller support frame are integrated to form a unit. Accordingly, the second guide member and the discharge driven roller support frame are unitized on separate lines, and the unit is attached to the main frame, whereby the second guide member and the discharge driven roller support frame are connected to the main frame. It can be attached to the frame, and the assembly work can be made more efficient.

  In addition, since the first guide member and the second guide member are configured to be connectable by a snap-type connecting means, the second guide member is attached to the main frame when the unit is attached to the main frame. It is only necessary to connect one guide member in a snap manner, and thus the unit can be easily attached to the main frame without using means such as screwing.

  Furthermore, although the first guide member is directly attached to the main frame, the second guide member is attached to the main frame via the first guide member, so that the second guide member is deformed at a high temperature. Even if the second guide member occurs, the second guide member is not directly restrained by the main frame, so that a large stress does not occur. Accordingly, the guide member is divided into the first guide member and the second guide member in this way, and the second guide member is not restrained by the main frame. Risk can be reduced, and good recording quality can be maintained by reducing or preventing a change in the gap between the recording medium and the recording head.

  In addition, the discharge driven roller support frame is similarly attached to the main frame via the first guide member, that is, the discharge driven roller support frame is not restrained by the main frame. The deformation of the discharge driven roller support frame can be reduced or prevented. Accordingly, the position of the discharge driven roller can be kept constant over a long period of time, thereby preventing a decrease in recording quality (formation of roller contact marks) due to the discharge driven roller being in strong contact with the recording medium. can do.

  In addition, when the unit is removed from the recording apparatus, it is only necessary to separate the first guide member and the second guide member. This can improve the maintainability of the apparatus and, in turn, can be recycled. And reusability can be improved, and an environment-friendly recording apparatus can be provided.

According to a second aspect of the present invention, in the first aspect, the second guide member and the discharge driven roller support frame are fitted by a snap-type fitting means to form the unit. It is characterized by being.
According to the above aspect, since the second guide member and the discharge driven roller support frame are configured to be unitized by the snap-type fitting means, the assembly efficiency of the apparatus is further improved.

According to a third aspect of the present invention, in the first or second aspect, the second guide member has a support portion that supports the discharge drive roller rotation shaft, and the discharge drive roller rotation shaft is The unit is configured to be integrated with the unit to form a part of the unit.
According to the above aspect, the second guide member has the support portion that supports the discharge drive roller rotation shaft, and the discharge drive roller rotation shaft is integrated with the unit to form a part of the unit. Since the discharge drive roller rotation shaft is supported by the second guide member in a separate line and unitized with the discharge driven roller support frame, the work is attached to the main frame. Thus, work efficiency can be improved.

According to a fourth aspect of the present invention, in the first to third aspects, the discharge drive roller rotation shaft is supported by a bearing portion formed on the main frame via a bush member. It is characterized by.
According to the above aspect, since the discharge drive roller rotating shaft is supported by the main frame via the bush member, the bush member is attached in advance to the discharge drive roller rotating shaft, so that the discharge The drive roller rotation shaft can be easily attached to the main frame.

According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the first guide member is located upstream of a connecting portion between the first guide member and the second guide member. The second guide member is provided so as to be capable of swinging about a swing shaft, and the second guide member swings about a swing shaft positioned downstream of a connecting portion between the second guide member and the first guide member. The gap between the recording medium and the recording head can be adjusted by swinging the first guide member and the second guide member.
According to the above aspect, since the first guide member and the second guide member are provided to be swingable, the gap between the recording medium and the recording head can be adjusted. The gap can be adjusted without moving the recording head up and down, whereby the gap adjusting mechanism can be configured with a simpler configuration and at a lower cost.

According to a sixth aspect of the present invention, in the fifth aspect, a rotatable operation lever that performs a swinging operation of the second guide member is provided on the downstream side of the second guide member. The guide member has a shape that extends toward the operation lever and is provided with a rotation end that can be elastically deformed in the longitudinal direction of the second guide member. A protrusion formed so as to protrude in the longitudinal direction of the second guide member at the moving end is configured to be linked to and engaged with a hole formed in the operation lever, and an upper portion of the hole Is characterized in that an inclined surface for guiding the protrusion to the hole is formed.
According to the above aspect, the protrusion formed to protrude in the longitudinal direction of the second guide member at the rotating end engages with the hole formed in the operation lever, so that the operation lever The second guide member and the second guide member are linked to each other. An inclined surface for guiding the protrusion to the hole is formed at the upper portion of the hole, and the rotating end is the protrusion. Since it can be elastically deformed in the protruding direction (that is, the longitudinal direction of the second guide member), if the second guide member is lowered straight from the upper part of the operation lever, the rotational end is accompanied by elastic deformation. Thus, the projection is guided to the hole by the inclined surface, and both are engaged. Therefore, in this way, the second guide member and the operation lever can be easily engaged with each other by a simple procedure of lowering the second guide member from above the operation lever.

  According to a seventh aspect of the present invention, there is provided a liquid ejecting head that ejects liquid onto an ejected medium, a shape that extends in the main scanning direction of the liquid ejecting head, and is provided at a position facing the liquid ejecting head. A guide member that defines a distance between the medium and the liquid ejecting head; a discharge driving roller rotating shaft that extends in the main scanning direction of the liquid ejecting head; and a downstream side of the liquid ejecting head, And a discharge driving roller that discharges the ejected medium on which the liquid is ejected, a discharge driven roller that is driven to rotate in contact with the discharge driving roller, and extends in the main scanning direction of the liquid ejecting head. A discharge driven roller support frame having a shape and supporting the discharge driven roller; the guide member; the discharge driven roller support frame; and A liquid ejecting apparatus including a main frame that supports an output driving roller rotation shaft, wherein the guide member includes an upstream first guide member and a downstream second guide in a transport direction of the ejection target medium. The first guide member and the second guide member are configured to be connectable by snap-type connecting means, and the second guide member and the discharge driven roller support frame are integrated. A unit can be formed, and the unit is configured to be attachable to the main frame by connecting the second guide member to the first guide member supported by the main frame. Features.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an external perspective view of a recording apparatus 1 according to the present invention. FIGS. 2 and 3 are cross-sectional side views of the main part of the recording apparatus 1. FIG. 2 is a view before the discharge driven roller support frame 44 is rotated. FIG. 3 shows a state where the medium pressing roller 47 is lowered and the medium pressing roller 47 is lowered by the rotation of the discharge driven roller support frame 44 and the floating of the trailing edge of the recording medium is suppressed. 4 corresponds to FIG. 2, and is a side sectional view showing a state of the rotation transmission mechanism by the operation of the operation lever 47 before the discharge driven roller support frame 44 is rotated. FIG. Correspondingly, it is a side sectional view showing a state of the rotation transmission mechanism by the operation of the operation lever 47 after the discharge driven roller support frame 44 rotates.

As shown in FIG. 1, the recording apparatus 1 is a type having a scanner function in addition to a printer function, and is provided on the apparatus main body 3, a scanner unit 5 located on the upper surface side of the apparatus main body 3, and a rear side of the scanner unit 5. And a feeding section 7 to be provided.
As will be described later with reference to FIG. 2, the apparatus main body 3 mainly has an ink jet printer function. In FIG. 1, a member denoted by reference numeral 9 indicates a discharge receiving portion of the recording medium. The discharge receiving portion 9 is rotated approximately 90 ° toward the front side when the printer function is used, and the recording medium after recording is performed. Use as received. An operation panel 11 is provided on the left side of the upper surface of the apparatus main body 3, and a scanning function using the scanner unit 5, a recording function in the apparatus main body 3, a function for recording a scanned image, and the like are operated on the operation panel 11. It is possible.

  The scanner unit 5 includes a lid 15 that can be opened and closed by pivoting upward about a pivot shaft 13, and a print or the like that is a target when scanning is placed on the lower side of the lid 15. A glass mounting surface (not shown) is formed. Further, a scanning device (not shown) is provided below the glass placement surface. The scanner unit 5 as a whole rotates upward about the rotation shaft 17 as a whole to open the upper portion of the apparatus main body 3 so that maintenance of members in a recording unit such as a carriage can be performed. .

  As shown in FIG. 1, the feeding unit 7 is closed by a lid 19 when not in use, and the feeding unit 7 is opened by rotating the lid 19 rearward as shown in FIG. Moreover, it functions as the medium support 23 by fixing at a fixed angular position. The medium support 23 is provided with an edge guide 25 that is movable according to the width dimension of the recording medium P. When the lid 19 is in the open state, a feeding port 27 is formed in the feeding unit 7, and the recording medium P stocked on the medium support 23 is recorded from the feeding port 27 one by one by a feeding mechanism (not shown). Sent to the department.

  FIG. 2 shows peripheral members of a path through which the recording medium P is fed from the left side (upstream side) to the right side (downstream side). The recording medium P delivered from the feeding unit 7 reaches a conveyance roller 33 configured to include a lower conveyance driving roller 29 that is rotationally driven and an upper conveyance driven roller 31 that can freely rotate. While being subjected to a precise feeding operation in the recording process by the drive system, the sheet is conveyed toward the recording head 35 located downstream of the conveying roller 33 in the recording medium conveying direction.

  The recording head 35 is supported by a carriage 37, and the carriage 37 can reciprocate in the main scanning direction (the front and back direction in the drawing) perpendicular to the conveyance direction of the recording medium P. A platen unit 40 corresponding to a “guide member” is provided at a position facing the recording head 35, and ribs 39 a, 39 b and 39 c are formed on the side facing the recording head 35 in the platen unit 40. Yes. The ribs 39a, 39b, and 39c serve to support the recording medium P from below when recording on the recording medium P by the recording head 35. That is, a gap between the recording medium P and the recording head 35 (hereinafter referred to as “medium gap PG”) is defined.

  The medium gap PG can be appropriately adjusted according to the thickness of the recording medium P. With the medium gap PG properly adjusted, the recording medium P is smoothly recorded on the ribs 39a, 39b, and 39c, and high-quality recording is performed. The recorded recording medium P is sequentially discharged by the discharge roller 41. The discharge roller 41 is rotatably supported by a lower discharge drive roller 43 that is rotationally driven and a discharge driven roller support frame (hereinafter referred to as “discharge frame”) 44 via a holder 45a so as to be freely rotatable. A driven roller (gagged roller) 45 is provided, and the recording medium P has a mechanism that is pulled out and discharged by the rotational drive of these rollers. A medium pressing roller 47 that restricts the lifting of the rear end of the recording medium P is provided between the recording head 35 and the discharge roller 41 on the leading end side (upstream side in the transport direction) of the discharge frame 44. Is provided. In the present embodiment, the discharge frame 44 is formed of a metal plate material.

  2 and 3, the member denoted by reference numeral 49 is a first guide member, and the member denoted by reference numeral 51 is a second guide member. The platen unit 40 is formed by connecting the first guide member 49 and the second guide member 51. In other words, the platen unit 40 includes the first guide member 49 on the upstream side and the downstream side. The first guide member 49 and the second guide member 51 are provided so as to be swingable when viewed from the side of the conveyance path of the recording medium P (details). Thus, the medium gap PG can be adjusted. In the present embodiment, the first guide member 49 and the second guide member 51 are made of a resin material.

  Next, a mechanism (rotation transmission mechanism) that swings the first guide member 49 and the second guide member 51 will be described with reference to FIGS. 4 and 5. As shown in FIG. 4, a second guide member 51 is provided integrally with the discharge frame 44 below the discharge frame 44. From the state shown in FIG. 5 to the direction of the arrow 53 in FIG. 4, the second guide member 51 uses the discharge drive roller rotation shaft 43a formed by a metal shaft, which is the rotation shaft of the discharge roller 43, as the rotation shaft. To the state shown in FIG. As shown in FIG. 13, a protrusion 51 h is provided at the end of the rotation end 51 a of the second guide member 51, that is, the end of the rotation end 51 a that extends toward the operation lever 57 (the right end in FIG. 4). Is formed. On the other hand, a lever mounting plate 55 that performs a swing operation of the second guide member 51 is provided adjacent to the second guide member 51 (on the downstream side of the second guide member 51). An operating lever 57 is attached to the lever mounting plate 55 so as to be pivotable in the vertical direction. The operating lever 57 is provided with a spring member 58. The spring member 58 always moves the operating lever 57 upward. It is biased to the raised position side (state shown in FIG. 5).

  A hole 59 is formed at one end of the operation lever 57, and when the projection 51h of the second guide member 51 is hooked (inserted) into the hole 59, the operation lever 57 is lowered as shown in FIG. The second guide member 51 rotates (swings) in the clockwise direction in FIG. 4 together with the discharge frame 44 using the discharge drive roller rotation shaft 43a as the rotation shaft (swing shaft). As shown in FIG. 5, when the operation lever 57 is raised, the second guide member 51 rotates with the discharge frame 44 counterclockwise around the discharge drive roller rotation shaft 43a. .

  As a result, when the operation lever 57 is lowered, the medium pressing roller 47 positioned on the upstream side in the feeding direction from the discharge driving roller rotating shaft 43a is in the upper position as shown in FIG. When the operation lever 57 is raised, the rear end of the recording medium P is pushed downward as shown in FIG.

  An inclined surface 57a is formed on the upper portion of the hole 59 formed in the operation lever 57, and when the second guide member 51 is connected to the first guide member 49 attached to the main frame 2 (details are given below). As will be described later, the rotation end 51a is elastically deformed, and the projection 51h gets over the inclined surface 57a. As a result, the projection 51h is guided to the hole 59 by the inclined surface 57a. That is, the protrusion 51 h formed so as to protrude in the longitudinal direction of the second guide member 51 at the rotation end 51 a is engaged with the hole 59 formed in the operation lever 57, whereby the operation lever 57 and the second guide are engaged. The member 51 and the member 51 are linked to each other. An inclined surface 57a for guiding the protrusion 51h to the hole 59 is formed at the upper portion of the hole 59, and the rotation end 51a is in the protruding direction of the protrusion 51h (see FIG. That is, since it can be elastically deformed in the longitudinal direction of the second guide member 51, if the second guide member 51 is straightened from the upper part of the operation lever 57, the protrusion 51 h is accompanied by elastic deformation of the rotating end 51 a. Is guided to the hole 59 by the inclined surface 57a, and both engage. Therefore, the second guide member 51 and the operation lever 57 can be easily engaged with each other by the simple procedure of lowering the second guide member 51 from above the operation lever 57, thus improving the assembly workability. It is supposed to do.

  On the other hand, the first guide member 49 and the second guide member 51 are connected so as to be swingable with each other (details will be described later), and the upstream end portion of the first guide member 49 in the feeding direction Is rotatably connected to the main frame 2 (FIG. 6). Therefore, when the second guide member 51 rotates counterclockwise from the position shown in FIG. 4, the first guide member 49 rotates around the shaft 29 a of the transport drive roller 29 in the clockwise direction of FIG. 4. It will be.

  A link lever holder 61 is provided adjacent to the first guide member 49. On the other hand, a protrusion 63 is formed on the first guide member 49, and the protrusion 63 protrudes from a long hole (not shown) formed in the link lever holder 61. The link lever holder 61 is provided with a link lever 67 having a rotation fulcrum 65 on the downstream side in the feeding direction from the protrusion 63. The link lever 67 is formed with a hole 69 through which the protrusion 63 passes. With this configuration, the protrusion 63 moves up and down as the first guide member 49 rotates, so that the link lever 67 can rotate clockwise and counterclockwise around the rotation fulcrum 65. Yes.

A detector 71 is provided below the link lever 67. The detector 71 detects the distance from the lower side of the link lever 67, and the medium pressing roller 47 is in the state shown in FIG. Recognize whether it is in a state.
A lock lever 73 that is rotatable around a rotation fulcrum 75 is provided upstream of the link lever 67 in the feeding direction. A locking protrusion 77 is formed at the free end of the lock lever 73, and one end of a tension coil spring 79 is connected to the free end and is always urged to rotate counterclockwise in FIG. Yes. The protrusion 63, the link lever 67, the lock lever 73, and the tension coil spring 79 constitute a lock mechanism.

  A cam portion 81 is formed at the free end of the link lever 67, and the cam portion 81 is locked above the locking projection 77 of the lock lever 73 when the link lever 67 is rotated upward. That state is maintained (see FIG. 4). When the link lever 67 is rotating downward, the link lever 67 is locked to the lower side of the locking projection 77 of the lock lever 73 to maintain the state (see FIG. 5).

  The operation of the above configuration (head contact preventing device at the rear end of the medium) will be described below. After recording on the recording medium P using the recording apparatus 1, the recording medium P is a recording medium in which the rear end does not bend upward and does not contact the recording head 35 as shown in FIG. In this case, the operation lever 57 is in the lowered position as shown in FIG. At this time, as shown in FIG. 2, the distance between the recording head 35 and the upper surface of the platen 39, that is, the medium gap PG is relatively narrow, and the first mode is in which the medium pressing roller 47 is positioned on the upper side.

In the first mode, as shown in FIG. 4, the operation lever 57 is lowered downward against the urging force of the spring member 58. Since the protruding portion 63 of the first guide member 49 is located at the upper position, the cam portion 81 of the link lever 67 is locked on the upper side of the locking protrusion 77 of the lock lever 73. In this state, since the free end side of the lock lever 73 is pulled by the tension coil spring 79, the locking state of the cam portion 81 and the locking projection 77 is locked, and the state where the operation lever 57 is lowered is maintained. .
From the first mode, as shown in FIG. 3, the medium gap PG is widened and the medium pressing roller 47 is lowered to prevent the rear end of the recording medium P from coming into contact with the recording head 35. Switch according to the following operations.

  That is, as shown in FIG. 5, when the operation lever 57 is lifted upward, the second guide member 51 rotates about the discharge drive roller rotation shaft 43a in the counterclockwise direction of FIG. Accordingly, the discharge frame 44 integrated with the second guide member 51 is also rotated in the counterclockwise direction, and the medium pressing roller 47 is lowered downward so as to push down the rear end of the recording medium P (see FIG. 3).

  Further, as the second guide member 51 rotates counterclockwise, the first guide member 49 rotates about the shaft 29a of the feed drive roller in the clockwise direction of FIG. As a result, the platen 39 integrated with the first guide member 49 moves downward as shown in FIG. 3, and the medium gap PG is expanded.

  Further, as the first guide member 49 rotates in the clockwise direction in FIG. 5, the projection 63 rotates the link lever 67 in the counterclockwise direction in FIG. 5 around the rotation fulcrum 65. At this time, the cam portion 81 of the link lever 67 acts on the locking projection 77 of the lock lever 73 so as to rotate the lock lever 73 clockwise against the pulling force of the tension coil spring 79. Therefore, the cam portion 81 gets over the locking projection 77 and is locked below the locking projection 77 as shown in FIG. This locked state is also maintained by pulling the free end side of the lock lever 73 by the tension coil spring 79. The detector 71 detects whether or not the link lever 67 is approaching the detector 71, and issues a signal indicating that it is in the first mode or the second mode. In response to this signal, which mode is displayed on the display unit on the operation panel 11. As described above, the medium gap PG can be easily enlarged or reduced only by operating the operation lever 57 without moving the carriage 4 up and down.

  Next, a method for attaching the first guide member 49, the second guide member 51, the discharge frame 44, and the discharge drive roller rotating shaft 43a to the main frame 2 will be described with reference to FIGS. Here, FIG. 6 is a perspective view showing a state in which the four constituent members are attached to the main frame 2, FIG. 7 is a perspective view showing a state in which the first guide member 49 is attached to the main frame 2, and FIG. 9 and 10 are perspective views of the unit 50 including the second guide member 51, the discharge driven roller support frame 44, and the discharge drive roller rotating shaft 43a. FIG. 11 is an exploded perspective view of the unit 50. 12 is a partially enlarged view of the unit 50, FIG. 13 is a perspective view of an engaging portion between the operation lever 57 and the first guide member 49, and FIG. 14 is a portion of the ink discarding hole 49a formed in the second guide member 51. It is an enlarged view, (A) is sectional drawing, (B) is a top view.

  In FIG. 6, reference numeral 2 denotes a main frame that constitutes the base of the recording apparatus 1. The main frame 2 is formed of a metal plate material so as to form a substantially U-shape in plan view, and is provided on both sides of the first guide member 49 and the second guide member 51 that extend in the main scanning direction. It has the support parts 2a and 2b comprised so that it might be provided. The first guide member 49, the second guide member 51, the discharge frame 44, and the discharge drive roller rotating shaft 43a are supported by the support portions 2a and 2b. In FIG. 6, reference numeral 50 denotes a unit in which the second guide member 51, the discharge frame 44, and the discharge drive roller rotating shaft 43a are integrated (details will be described later).

  Next, as shown in FIG. 8, the first guide member 49 has projecting shafts 49 c and 49 d formed so as to protrude outward from both end portions on the upstream side, and the shafts 49 c and 49 d are connected to each other. By fitting into holes (not shown) formed in the support portions 2a and 2b of the main frame 2, the recording medium P is supported so as to be swingable as viewed from the side as described above.

  In addition, ink discard holes 49 a and 49 a are formed at the longitudinal end of the first guide member 49. As shown in detail in FIG. 14A, the ink discarding holes 49a and 49a are formed so as to penetrate vertically through the cylindrical portion 49e and fulfill the function of receiving ink droplets ejected by the flushing operation of the recording head 35. It is. A waste liquid tray 85 (not shown) for collecting the discarded ink droplets is provided below the ink discard holes 49a and 49a. The waste liquid tray 85 includes a plurality of layers (in this embodiment, Ink absorbing materials 83 and 84 for absorbing and holding ink are provided so as to form (two layers).

  Here, as shown in FIG. 14B, the ink discarding holes 49a are configured to take charge of the two nozzle opening rows 36 formed in the recording head 35 by one ink discarding hole 49a and the ink discarding holes 49a. The size of the opening of the discard hole 49 a is formed to be sufficiently large with respect to the nozzle opening row 36. That is, not all of the ink droplets ejected from the recording head 36 land directly under the landing position shift. Further, in the recording apparatus 1 according to the present embodiment, the first guide member 49 is the medium gap PG. Therefore, the gap between the ink discarding holes 49a is sufficiently widened for these reasons.

  By the way, in the ink absorbing materials 83 and 84 provided in the waste liquid tray 85, an opening 83a is formed in the upper layer of the ink absorbing material 83, and a cylindrical portion 49e in which an ink discarding hole 49a is formed is formed in the opening. It is configured to enter 83a. Accordingly, it is possible to prevent the discarded ink droplets from becoming mist and diffusing from the lower side of the cylindrical portion 49e (ink discard hole 49a) to the outside, thereby preventing contamination inside the apparatus. The lower layer ink absorbing material 84 is formed with an opening 84a and a groove (not shown) communicating with the opening 84a is formed, so that ink droplets falling on the waste liquid tray 85 are diffused throughout the tray. It is made to do.

  Next, as shown in FIGS. 9, 10, and 11, the unit 50 can be formed by integrating the second guide member 51, the discharge drive roller shaft 43 a, and the discharge frame 44. Yes. As shown in FIG. 11, protrusions 51 b and 51 c having hook shapes protruding outward are formed at both ends in the longitudinal direction of the second guide member 51, while the protrusion 51 b is formed on the discharge frame 44. A fitting hole 44a and a hole (not shown) into which the protrusion 51c is fitted are formed. Then, as shown in FIG. 12, each can be fitted in a snap manner so that both can be easily fitted (integrated). Therefore, the projections 51b and 51c, the hole 44a in which they are fitted, and a hole (not shown) constitute fitting means for fitting the discharge frame 44 and the second guide member 51 together.

On the other hand, bearing portions 51d, 51e, 51f as “support portions” are formed on the second guide member 51, and the discharge drive roller shaft 43a is fitted into the bearing portions 51d, 51e, 51f in a snap manner. It is like.
However, the discharge drive roller shaft 43a is pivotally supported by bearings 2c and 2d (FIG. 7) formed on the main frame 2 via bush members 46 and 46 shown in FIG. 43a rotates for discharging the recording medium P. Accordingly, in relation to the second guide member 51, the bearing portions 51d, 51e, and 51f are engaged with the discharge drive roller shaft 43a as described above, so that the second guide member 51 is transported through the recording medium P. Is rotated to adjust the medium gap PG with the discharge drive roller shaft 43a as a rotation axis.
As described above, the discharge driving roller shaft 43a is supported by the second guide member 51 before being attached to the main frame 2, and the second guide member 51 and the discharge frame 44 are further fitted to form the unit 50. It is possible.

  On the other hand, the first guide member 49 and the second guide member 51 are configured to be connectable by a snap-type connecting means. That is, as shown in FIG. 8, shafts 49b and 49c constituting the connecting means are formed at both ends in the longitudinal direction of the first guide member 49. As shown in FIG. Bearing portions 51g and 51j are formed at positions corresponding to the shafts 49b and 49c constituting the connecting means. Then, the shaft 49b and the bearing portion 51j and the shaft 49c and the bearing portion 51g are fitted to each other so that the first guide member 49 and the second guide member 51 are connected in a snap-type manner, and as described above, the two are relative to each other. Can be swung.

  Therefore, when the first guide member 49, the second guide member 51, the discharge drive roller shaft 43a, and the discharge frame 44 are attached to the main frame 2, the unit 50 is formed and the first guide member 49 is the main guide. In a state of being attached to the frame 2, the second guide member 51 constituting the unit 50 and the first guide member 49 attached to the main frame 2 are connected in a snap manner. Thereby, the second guide member 51 and the discharge frame 44 are supported by the main frame 2 via the first guide member 49. At this time, the discharge drive roller shaft 43a is fitted to the bearing portions 2c and 2d formed on the main frame 2 via the bush members 46 and 46. As a result, the discharge drive roller shaft 43a is supported by the main frame 2. As described above, the unit 50 is supported by the main frame 2.

Hereinafter, the operational effects achieved by such a configuration will be described. In other words, the above-described configuration is a guide that defines the distance between the recording head 35 and the recording head 35, which is formed in a position extending in the main scanning direction of the recording head 35 and facing the recording head 35. By being attached to a platen unit 40 as a member and a discharge driving roller rotating shaft 43a extending in the main scanning direction of the recording head 35 and provided on the downstream side of the recording head 35, by rotating in contact with the recording medium P, A discharge driving roller 43 that discharges the recording medium P on which recording has been performed, a discharge driven roller 45 that is driven to rotate in contact with the discharge driving roller 43, and a shape that extends in the main scanning direction of the recording head 35 and discharge driven roller 45 to support the discharge frame 44, the platen unit 40, the discharge frame 44, and the discharge drive roller rotating shaft 43a. In the recording apparatus 1 including the main frame 2, the platen unit 40 is divided into an upstream first guide member 49 and a downstream second guide member 51. The second guide member 51 can be connected by a snap-type connecting means, and the second guide member 51 and the discharge frame 44 can be integrated to form a unit 50, and the unit 50 can be connected to the main frame 2. The second guide member 51 is connected to the supported first guide member 49 so that it can be attached to the main frame 2.
Therefore, first, the second guide member 51, the discharge frame 44, and the discharge drive roller rotating shaft 43a are unitized on separate lines, and the formed unit 50 can be attached to the main frame 2 to improve the efficiency of the assembly work. Can be achieved.

  Further, since the first guide member 49 and the second guide member 51 are configured to be connectable by a snap-type connecting means, when the unit 50 is attached to the main frame 2, the second guide member 51 is attached to the first guide member 49. It is only necessary to connect the guide member 49 in a snap manner, and thus the unit 50 can be easily attached to the main frame 2 without using means such as screwing. In addition, although it is necessary to attach the discharge drive roller rotating shaft 43a to the main frame 2, it is also fitted to the bearing portions 2c and 2d formed on the main frame 2 via the bush member 46 as described above. Only enough.

  Furthermore, although the first guide member 49 is directly attached to the main frame 2, the second guide member 51 is attached to the main frame 2 via the first guide member 49, so that the second guide member 51 is deformed at a high temperature. Even if the second guide member 51 occurs, the second guide member 51 is not directly restrained by the main frame 2, so that no great stress is generated. Therefore, the risk of stress deformation can be reduced as a whole of the platen unit 50, and a change in the medium gap PG can be prevented or reduced to maintain good recording quality.

  In addition, since the discharge frame 44 is similarly attached to the main frame 2 via the first guide member 49, the deformation of the discharge frame 44 can be prevented, so that the position of the discharge driven roller 45 can be extended for a long time. Since the discharge driven roller 45 can be kept in contact with the recording medium P, it is possible to prevent a decrease in recording quality (formation of jagged traces).

  In addition, when removing the unit 50 from the recording apparatus 1, it is only necessary to separate the first guide member 49 and the second guide member 51, so that the maintainability of the recording apparatus 1 can be improved. In particular, in the platen unit 40, a groove for discarding ink between the ribs 39a and 39b, between the ribs 39b and 39c, and at a position off the side edge of the recording medium P (see FIG. 8). Is formed, that is, it is configured such that borderless recording can be performed, so that the member is easily soiled by ink mist. However, the unit 50 can be easily removed in this way, and is soiled by ink mist. The member can be easily replaced. When removing the unit 50 from the recording apparatus 1, it is only necessary to separate the first guide member 49 and the second guide member 51. That is, the recyclability and the reusability are improved, and the environment is considered. It is possible to provide a recorded apparatus.

  In addition, since the second guide member 51 has bearing portions 51d, 51e, and 51f as support portions for supporting the discharge drive roller rotation shaft 43a, the discharge drive roller rotation shaft 43a is integrated with the unit 50 to form a unit. 50, the discharge drive roller rotation shaft 43a is supported by the second guide member 51 and the discharge drive roller rotation shaft 43a is attached to the main frame 2. It can be done more efficiently.

1 is a perspective view of a recording apparatus according to the present invention. FIG. 3 is a side sectional view of a main part of the recording apparatus according to the invention. FIG. 3 is a side sectional view of a main part of the recording apparatus according to the invention. The sectional side view of a rotation transmission mechanism. The sectional side view of a rotation transmission mechanism. The perspective view of a main frame. The perspective view of a main frame. The perspective view of a 1st guide member. The perspective view of the unit containing a 2nd guide member and a discharge | emission frame. The perspective view of the unit containing a 2nd guide member and a discharge | emission frame. The exploded perspective view of the unit containing the 2nd guide member and a discharge frame. The elements on larger scale of the unit containing the 2nd guide member and a discharge frame. The perspective view of the engaging part of an operation lever and a 1st guide member. (A) is sectional drawing of an ink discard hole, (B) is a top view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Recording device with a scanner, 2 main frame, 3 apparatus main body, 4 carriage, 5 scanner unit, 6 roller, 7 feeding part, 9 discharge | emission receiving part, 11 operation panel, 13 rotating shaft, 15 lid, 17 rotating Axis, 19 Lid, 23 Medium support, 25 Edge guide, 27 Feed port, 29 Conveyance drive roller, 29a Conveyance drive roller shaft, 31 Conveyance driven roller, 33 Conveyance roller, 35 Recording head, 36 Nozzle array, 37 Carriage 39a, 39b, 39c Rib, 40 Platen unit, 41 Ejection roller, 43 Ejection drive roller, 43a Ejection drive roller shaft, 44 Ejection driven roller support frame, 45 Ejection driven roller, 46 Bush, 47 Media press roller, 49 1st Guide member, 49a Ink discard hole, 50 units, 51st Guide member, 53 arrow, 55 Lever mounting plate, 57 Operation lever, 58 Spring member, 59 hole, 61 Link lever holder, 63 Projection, 65 Rotating fulcrum, 67 Link lever, 69 hole, 71 Detector, 73 Lock lever , 75 Rotating fulcrum, 77 Locking projection, 79 Pulling coil spring, 81 Cam part, 83, 84 Ink absorbing material, 85 Waste liquid tray, P Recording medium

Claims (2)

A recording head for recording on a recording medium;
A guide member having a shape extending in the main scanning direction of the recording head and provided at a position facing the recording head, and defining a distance between the recording medium and the recording head;
The recording medium attached to the discharge driving roller rotating shaft extending in the main scanning direction of the recording head and provided on the downstream side of the recording head is rotated in contact with the recording medium, thereby discharging the recording medium on which recording has been performed. A discharge drive roller that
A discharge driven roller that rotates in contact with the discharge drive roller;
A discharge driven roller support frame that has a shape extending in the main scanning direction of the recording head and supports the discharge driven roller;
A main frame that supports the guide member, the discharge driven roller support frame, and the discharge drive roller rotation shaft;
The guide member is divided into an upstream first guide member and a downstream second guide member in the recording medium conveyance direction, and the first guide member and the second guide member snap. It is configured to be connectable by a connecting means of the formula,
The second guide member and the discharge driven roller support frame can be integrated to form a unit,
The unit is configured to be attachable to the main frame by connecting the second guide member to the first guide member supported by the main frame ,
The first guide member is provided so as to be able to swing around a swing shaft positioned upstream from a connecting portion between the first guide member and the second guide member, and the second guide member is A swing shaft provided downstream of a connecting portion between the second guide member and the first guide member is provided so as to be swingable, and is covered by a swing operation of the first guide member and the second guide member. The gap between the recording medium and the recording head is configured to be adjustable.
A recording apparatus. The recording apparatus according to claim 1 , wherein a rotatable operation lever that performs a swinging operation of the second guide member is provided downstream of the second guide member,
The second guide member has a shape that extends toward the operation lever, and is provided with a rotation end that is elastically deformable in the longitudinal direction of the second guide member,
The operation lever and the rotation end are formed by engaging a protrusion formed at the rotation end so as to protrude in the longitudinal direction of the second guide member in a hole formed in the operation lever. It is made to work together,
An inclined surface that guides the protrusion to the hole is formed on the top of the hole.
A recording apparatus.

Images