JP4873090B2 - Media to be transported - Google Patents

Description

  In the present invention, a nip plate is formed by a rotationally driven transport drive roller and a transport driven roller that is driven to rotate in pressure contact with the transport drive roller, and is sub-scan fed along with the rotation of the transport drive roller. The present invention relates to a tray on which a transported medium and a thin plate-like body represented by an optical disk can be set.

  An ink jet printer as an example of a recording apparatus or a liquid ejecting apparatus directly ejects ink droplets onto a label surface of an optical disk as a thin plate such as a compact disk or a DVD (Digital Versatile Disc). Some are configured to be recordable. In such an ink jet printer, generally, a thin plate-like body such as an optical disc is set on a tray having a plate shape, and is transported (sub-scan feed) along a transport path in the ink jet printer in a state of being set on the tray. Recording is then performed.

  Here, the tray is sub-scanned by rotating the transport driving roller while being nipped by the transport driving roller and the transport driven roller. However, when the tray is brought into a sub-scan feedable state (that is, fed) by the transport driving roller and the transport driven roller, the tray must be inserted between the transport driving roller and the transport driven roller. Since the transport driven roller is in strong pressure contact with the transport drive roller, therefore, as described in Patent Document 1, the transport driven roller is separated from the transport drive roller by means of a lever operation as means for allowing the tray to enter between the two rollers. There is an ink jet printer provided with means for (release).

  Patent Document 2 discloses a tray in which a thin sheet-like film is attached to the tip of the tray. According to this, when the tray is fed, first, a thin sheet-like film enters between the conveyance driving roller and the conveyance driven roller, and this triggers the tray body to be the conveyance driving roller and the conveyance driven roller. Therefore, the release means for the transport driven roller as described in Patent Document 1 is not necessary.

Japanese Patent Application Laid-Open No. 2002-355956 JP 2004-42384 A

  According to the tray described in Patent Document 2, a thin sheet-like film is provided at the front end of the tray, so that the release means for the transport driven roller is not necessary. Since this is necessary, the cost is increased, and a thin sheet-like film has a drawback that it is easily damaged during handling. In particular, when the tray is inserted into the printer, a thin sheet-like film is provided at the tip of the tray, so that the tray is easily damaged by being forced into the apparatus.

  Therefore, the present invention has been made in view of such a problem, and the object thereof is to reduce the cost of a medium to be transported that can be nipped between the transport driving roller and the transport driven roller without releasing the transport driven roller. Another object of the present invention is to obtain a medium to be transported having a structure that is more easily inserted between the transport driving roller and the transport driven roller.

  In order to solve the above-mentioned problem, the first aspect of the present invention is to form a plate shape that can be nipped by a conveyance drive roller that is rotationally driven and a conveyance driven roller that is driven to rotate while being pressed against the conveyance drive roller. A medium to be transported that is sub-scanned along with the rotation of the transport driving roller, and a stress concentration portion where stress generated in the transported medium when concentrated by the transport driving roller and the transport driven roller is concentrated. It is characterized in that it is formed integrally with the transported medium at the tip of the transported medium.

  According to this aspect, the stress concentration portion where the stress generated in the transported medium when it is nipped by the transport driving roller and the transport driven roller is formed integrally with the transported medium at the tip of the transported medium. Therefore, when the medium to be transported is nipped by the transport driving roller and the transport driven roller, the stress concentration portion first enters between the transport driving roller and the transport driven roller. The main body of the transport medium enters between the transport driving roller and the transport driven roller, and the transported medium is nipped by both rollers. That is, the area of the tip of the medium to be transported (as viewed in plan) is extremely reduced by the stress concentration portion, so that the tip of the medium to be transported can easily enter between the transport driving roller and the transport driven roller with a small force (in other words, Therefore, the medium to be transported can be reliably placed between the transport drive roller and the transport driven roller without using a means for separating (release) the transport driven roller from the transport drive roller. Can get in. Therefore, an increase in the cost of the recording apparatus can be prevented.

  In addition, as a method for causing the leading end of the transported medium to enter between the transport driving roller and the transport driven roller, a transport unit (for example, a discharge roller) provided on the downstream side of the transport drive roller and the transport driven roller is used automatically. The method may be a method performed manually, or may be a method performed manually by a user. That is, in any of the methods, the transported medium can be easily inserted between the transport driving roller and the transport driven roller with a small force. In the former case, the transporting unit, the transported medium, The leading end of the medium to be transported can be surely inserted between the transport driving roller and the transport driven roller without causing a slip or the like.

  Since the stress concentration portion is formed integrally with the transported medium, the cost of the transported medium can be prevented, the strength is improved, and the transported medium is transported to the transport drive roller and the transport driven roller. Damage or the like is less likely to occur when inserted between the two. In addition, since the bottom surface of the transported medium can be formed smoothly without a step, sub-scan feed can always be performed with high accuracy. The “tip” of the transported medium means the end of the transported medium in the transport direction (the side that becomes the leading end when the transported medium is inserted toward the transport driving roller and the transport driven roller).

The second aspect of the present invention is characterized in that the stress concentration portion is formed by a protruding portion having a shape protruding in the transport direction of the transported medium.
According to this aspect, since the stress concentration portion is formed by the protruding portion that protrudes in the transport direction of the transported medium, the stress concentration portion is configured with a simple structure and at low cost. can do.

  According to a third aspect of the present invention, a plate shape that can be nipped is formed by a conveyance driving roller that is rotationally driven and a conveyance driven roller that is driven to rotate while being in pressure contact with the conveyance driving roller, and with the rotation of the conveyance driving roller. A transported medium to be sub-scanned, wherein a protruding portion that is shaped to protrude in the transport direction of the transported medium is formed integrally with the transported medium at the tip of the transported medium. It is characterized by being.

  According to this aspect, since the protruding portion that is shaped to protrude in the transporting direction of the transported medium is formed integrally with the transported medium at the tip of the transported medium, the transported medium is transported and driven. When the nipping is performed between the roller and the transport driven roller, the protrusion first enters between the transport driving roller and the transport driven roller, and this causes the main body of the transported medium to be separated from the transport driving roller. It enters between the transport driven rollers and the transported medium is nipped by both rollers. That is, since the area of the front end of the transported medium (by a plan view) is extremely small by the protrusion, the transported medium can easily enter between the transport driving roller and the transport driven roller with a small force (in other words, So that the medium to be transported can be surely entered between the transport driving roller and the transport driven roller without using a means for separating (release) the transport driven roller from the transport driving roller. Can be made. Therefore, an increase in the cost of the recording apparatus can be prevented.

  In addition, as a method for causing the leading end of the transported medium to enter between the transport driving roller and the transport driven roller, a transport unit (for example, a discharge roller) provided on the downstream side of the transport drive roller and the transport driven roller is used automatically. The method may be a method performed manually, or may be a method performed manually by a user. That is, in any of the methods, the transported medium can be easily inserted between the transport driving roller and the transport driven roller with a small force. In the former case, the transporting unit, the transported medium, The leading end of the medium to be transported can be surely inserted between the transport driving roller and the transport driven roller without causing a slip or the like.

  And since the said protrusion part is integrally formed with the to-be-conveyed medium, while being able to prevent the cost of a to-be-conveyed medium from being raised, intensity | strength improves and a to-be-conveyed medium is conveyed to a conveyance drive roller and a conveyance driven roller. Damage or the like is less likely to occur when inserting between the two. In addition, since the bottom surface of the transported medium can be formed smoothly without a step, sub-scan feed can always be performed with high accuracy. The “tip” of the transported medium means the end of the transported medium in the transport direction (the side that becomes the leading end when the transported medium is inserted toward the transport driving roller and the transport driven roller).

  The fourth aspect of the present invention is characterized in that the protruding portion has a tongue-like shape. According to this aspect, since the protrusion has a tongue-like shape, the strength of the protrusion can be ensured.

A fifth aspect of the present invention is characterized in that the protruding portion has a shape that tapers toward the tip in a longitudinal sectional view of the transported medium.
According to this aspect, since the projecting portion has a shape that tapers toward the tip in a longitudinal sectional view of the transported medium, the transported medium can be transported more easily with the transport driving roller. It can be inserted into the driven roller.

According to a sixth aspect of the present invention, the tip of the transported medium is tapered toward the tip in the longitudinal sectional view of the transported medium, and the upper surface thereof is formed so as not to protrude from the upper surface of the protruding portion. It is characterized by being.
According to this aspect, the front end of the transported medium is tapered toward the front end in a longitudinal sectional view of the transported medium, and the upper surface thereof is formed so as not to protrude from the upper surface of the protruding portion. When the front end of the transported medium enters between the transport driving roller and the transport driven roller, the transported medium can smoothly enter without being caught. That is, in a configuration in which a plurality of transport driven rollers are provided in the width direction of the transported medium, when the transported medium is sent toward the transport drive roller and the transport driven roller, a space between the transport drive roller and the transport driven roller is provided. When the protruding portion passes, there may be a mixture of a conveyance driven roller that is in pressure contact with the protruding portion and a conveyance driven roller in a free state that is not in pressure contact with the protruding portion. At this time, the conveying driven roller in the free state has a smaller separation width from the conveying driving roller than the conveying driven roller pressed against the protruding portion. Therefore, in this state, when the leading end of the transported medium passes between the transport driving roller and the transport driven roller following the protrusion, the transported medium may be caught by the transport driven roller.

  However, since the leading end of the transported medium has a tapered shape, the leading end of the transported medium can smoothly pass between the transport driving roller and the transport driven roller without being caught. In addition, since the top surface of the leading end of the transported medium does not protrude from the top surface of the protruding portion, the prying effect between the transport driving roller and the transport driven roller by the projecting portion is not hindered.

A seventh aspect of the present invention is characterized in that the bottom surface of the projecting portion forms a flat surface together with the bottom surface of the transported medium.
According to this aspect, since the bottom surface of the protruding portion forms a flat surface together with the bottom surface of the transported medium, the bottom surface of the transported medium becomes smooth without a step, and the sub-scan feed is always performed. It can be performed with high accuracy.

An eighth aspect of the present invention is characterized in that the protruding portion has a shape that tapers toward the tip in a plan view of the transported medium.
According to this aspect, since the projecting portion has a shape that tapers toward the tip in the plan view of the transported medium, the transported medium and the transport driven member can be more easily transported. It can be inserted between the rollers.

A ninth aspect of the present invention is characterized in that a plurality of the projecting portions are provided at a front end of the transported medium at a predetermined interval in a direction orthogonal to the transport direction of the transported medium.
According to this aspect, since the plurality of protrusions are provided at predetermined intervals in the direction orthogonal to the transport direction of the transported medium at the front end of the transported medium, the front end of the transported medium is It is possible to prevent or reduce the skew of the transported medium when entering between the transport driving roller and the transport driven roller.

In a tenth aspect of the present invention, the transport driven roller is pivotally supported by a holder member provided in a biased state so that the transport driven roller is pressed against the transport driving roller, and the protrusion is An urging means for urging the holder member is disposed so as to be in pressure contact with the conveyance driven roller at a position farthest from a position at which an urging force is applied to the holder member.
According to this aspect, the protrusion is pressed against the transport driven roller at a position farthest from a position where the biasing means for biasing the holder member that pivotally supports the transport driven roller applies a biasing force to the holder member. In other words, it is pressed against the transport driven roller at a position where the pressure contact force is the weakest, so that the transport medium can be inserted between the transport drive roller and the transport driven roller with a lighter force. it can.

An eleventh aspect of the present invention is characterized in that the transported medium is a tray provided with a set portion on which a thin plate-like body can be set.
According to this aspect, since the transported medium is a tray including a set portion on which a thin plate-like body such as an optical disk can be set, the tray on which the thin plate-like body can be set is similar to the above-described aspect of the present invention. Advantageous effects can be obtained.

1 is an external perspective view of an inkjet printer. 1 is an external perspective view of an inkjet printer. 1 is an external perspective view of an inkjet printer. 1 is a schematic side sectional view of an ink jet printer. 1 is a schematic side sectional view of an ink jet printer. The top view of the tray which concerns on this invention. FIG. 3 is an external perspective view of the front end of the tray according to the present invention. (A) is a top view of a tongue piece part, (B) is the same side view. Operation | movement explanatory drawing which shows a mode that a tray front-end | tip enters between between a conveyance drive roller and a conveyance driven roller. The top view which shows the positional relationship of a conveyance follower roller and a tongue piece part.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following, an outline of an ink jet printer (hereinafter referred to as “printer”) 1 as an example of a recording apparatus or a liquid ejecting apparatus will be described first with reference to FIGS. 1 to 5. 1 to 3 are external perspective views of the printer 1, and FIGS. 4 and 5 are schematic side sectional views of the printer 1. FIG. In the following, the right direction (printer front side) in FIGS. 4 and 5 is referred to as the “downstream side” of the paper transport path, and the left direction (printer rear side) is referred to as the “upstream side”.

  In FIG. 1, a printer 1 is provided with a feeding device 2 capable of setting a recording sheet (hereinafter referred to as “sheet P”) as an example of “recording medium” and “conveyed medium” in an inclined posture at the rear part. On the front side, there are an open state (FIG. 2) in which the sheets P are stacked by opening the front side of the apparatus, and a storage state (FIG. 1) that is closed so as to become a substantially vertical standing state from the open state. A stacker 13 that can be switched by opening / closing (turning) operation is provided in a lower case 17 (see FIG. 4) that forms the bottom of the apparatus.

As shown in FIG. 2, the stacker 13 includes a stacker main body 14 and a sub stacker 15, and is rotatable about a rotation shaft 14a (see FIGS. 4 and 5) of the stacker main body 14. When the sub stacker 15 is pulled out from the stacker main body 14 in a state where the sheet P is rotated and opened, a stack surface on which the sheets P are stacked is formed.
The outside of the printer 1 is covered with a case-shaped housing 11, and an openable and closable cover 12 for performing operations such as ink cartridge replacement is provided at the center upper portion of the housing 11. The exterior is constituted by the housing 11 and the cover 12.

  Hereinafter, the paper conveyance path of the printer 1 will be described in detail with reference to FIGS. In FIG. 4, the feeding device 2 includes a hopper 21, a feeding roller 23, a retard roller 27, and guide rollers 25 and 26, and conveys the paper P to the inkjet recording head 39. The set sheets P are fed one by one toward the transport driving roller 33 and the transport driven roller 34 constituting the “means”.

  More specifically, the hopper 21 is formed of a plate-like body, and is configured to be swingable around an upper swing fulcrum (not shown). By swinging, the paper P supported on the hopper 21 is supplied. It is brought into pressure contact with the feed roller 23 or separated from the feed roller 23. The feeding roller 23 has a substantially D shape in a side view, and feeds the paper P pressed by the arc portion to the downstream side, while the transport driving roller 33 and the transport after the paper P is fed. During the conveyance operation of the paper P by the driven roller 34, the flat portion is controlled so as to face the paper P as shown in the figure so as not to generate a conveyance load.

The retard roller 27 is provided so as to be in press contact with the arc portion of the feed roller 23. When only one sheet P is fed without occurrence of double feeding of the sheet P, the retard roller 27 contacts the sheet P and rotates (clockwise in FIG. 4). When there are a plurality of sheets between the feeding roller 23 and the retard roller 27, the friction coefficient between the sheets is lower than the friction coefficient between the sheet P and the retard roller 27. It becomes. Therefore, this prevents the next and subsequent sheets P, which are to be double-fed by the uppermost sheet P to be fed, from being fed downstream from the feeding roller 23 and is prevented from being double-fed.
The guide rollers 25 and 26 are provided so as to be freely rotatable, and as shown in the drawing, the paper P is in contact with the feeding roller 23 while the paper P is being transported by the transport driving roller 33 and the transport driven roller 34, so that no transport load is generated. Have a role.

  The paper P fed by the feeding device 2 is guided by a guide 29 and reaches a conveyance driving roller 33 that is rotationally driven by a motor, and a conveyance driven roller 34 that is driven to rotate while being in pressure contact with the conveyance driving roller 33. . The transport driven roller 34 is pivotally supported by a holder 31, and the holder 31 is attached to a main frame (not shown) constituting the base of the printer 1 via a torsion coil spring (not shown). The sheet P that has reached the conveyance drive roller 33 is opposed to the downstream inkjet recording head 39 by rotating the conveyance drive roller 33 while being nipped (interposed) by the conveyance drive roller 33 and the conveyance driven roller 34. Conveyed to the area. In this embodiment, the conveyance drive roller 33 has a diameter of about 10 mm, and the conveyance driven roller 34 has a diameter of about 5 mm.

  An ink jet recording head (hereinafter referred to as “recording head”) 39 and a platen 41 are arranged on the downstream side of the transport driving roller 33 so as to face the recording head. The recording head 39 is provided at the bottom of the carriage 35, and the carriage 35 is driven to reciprocate in the main scanning direction by a drive motor (not shown) while being guided by a carriage guide shaft 37 extending in the main scanning direction. The carriage 35 is equipped with an independent ink cartridge (not shown) for each of a plurality of colors, and supplies ink to the recording head 39.

  On the platen 41 that defines the distance between the paper P and the recording head 39, ribs are formed on the surface facing the recording head 39, and concave portions 42, 42 are formed. The concave portion 42 is for discarding ink ejected to an area off the edge of the paper P, so that so-called borderless printing can be performed in which printing is performed without margins on the edge of the paper P. Yes. In addition, an ink absorbing material (not shown) that absorbs the discarded ink is disposed in the concave portion 42, and from the ink absorbing material to a waste liquid tray (not shown) provided below the platen 41. Ink is guided.

  Subsequently, on the downstream side of the recording head 39, an auxiliary roller 46, a discharge driving roller 44 and a discharge driven roller 45 constituting “discharge means” are provided. A plurality of discharge drive rollers 44 are provided in the axial direction of the rotationally driven shaft body, and a discharge driven roller 45 is provided on a frame 47 formed of a metal plate that is long in the main scanning direction and is driven to rotate in contact with the discharge drive roller 44. To do. The sheet P on which recording has been performed by the recording head 39 is nipped by these rollers and discharged toward the stacker 13. The auxiliary roller 46 located on the upstream side of these rollers contacts and rotates the paper P from above, and prevents the paper P from being lifted, thereby maintaining a constant distance between the paper P and the recording head 39.

  The above is the outline of the paper conveyance path. The printer 1 is configured to be capable of ink jet recording directly on the label surface of an optical disk represented by a compact disk in addition to the paper P as a recording medium. As shown in FIG. 3, an optical disk D as a “recording medium” or “thin plate-like body” is set in a tray 50 as a “conveyed medium” having a plate shape, and is a linear sheet in the printer 1. Transported along the transport path. The tray 50 is configured separately from the printer 1 and is inserted from the front side of the printer 1 (right side in FIG. 5) toward the rear side (left side in FIG. 5) of the printer 1 while being supported by a tray guide 18 described later. .

  More specifically, reference numeral 18 in FIGS. 2 to 5 denotes a tray guide that guides the tray 50 when recording is performed on the optical disc D using the tray 50. The tray guide 18 is provided to be opened and closed (rotatable) downstream of the discharge drive roller 44 and the discharge driven roller 45, and supports the tray 50 by opening toward the front of the apparatus as shown in FIGS. It is provided so as to be switchable by rotating between an open state to be closed and a closed storage state so that the open state is substantially vertical as shown in FIGS.

  As shown in the change from FIG. 4 to FIG. 5, the tray guide 18 and the stacker 13 switch (open and close) between the open state and the housed state by performing the same rotation operation. That is, in the storage state, each is in a substantially vertical standing state, and is turned into a use state by being rotated and opened so as to fall from the vertical posture toward the front side of the apparatus. When each is in the stowed state, the tray guide 18 is positioned substantially parallel to the inside of the stacker 13, and when each is in the open state, the tray guide 18 is placed on the stacker 13 in a substantially horizontal posture. And the stacker 13 is held in a posture that gently faces upward so that the discharged paper P does not fall.

  The above is the schematic configuration of the printer 1, and the tray 50 will be described in detail below with reference to FIGS. 6 is a plan view of the tray 50, FIG. 7 is an external perspective view of the tip of the tray 50, FIG. 8A is a plan view of the protruding portion 57, and FIG. 6B is a side view of the protruding portion 57. 9 is an operation explanatory view showing how the leading edge of the tray 50 enters between the transport driving roller 33 and the transport driven roller 34, and FIG. 10 is a plan view showing the positional relationship between the transport driven roller 34 and the protrusion 57.

As shown in FIG. 6, the tray 50 has a rectangular shape in plan view, forms a plate shape that can be nipped by the transport driving roller 33 and the transport driven roller 34 (FIG. 5), and rotates the transport driving roller 33. Along with this, sub-scan feed is performed.
The tray 50 is integrally formed of a resin material so as to include a tray main body 51 and a set portion 52. As shown in the figure, the set portion 52 is constituted by a concave portion having a circular shape in plan view. A convex portion 53 is formed at the center of the set portion 52, and when the optical disc D is set in the set portion 52, a center hole (not shown) of the optical disc D is fitted into the convex portion 53, thereby the optical disc D. The position in the set portion 52 is determined. Incidentally, holes 54 and 54 formed around the set portion 52 are holes for ejecting the optical disc D.

  6 is the transport direction of the tray 50. When the tray 50 is inserted into the printer 1 through the tray guide 18 as shown in FIG. It is designed to be inserted as a tip. That is, reference numeral 56 indicates the front end of the tray 50. Further, as shown in FIG. 7, tongue pieces 57 and 57 as “projections” are integrally formed with the tray 50 at the front end of the tray 50 so as to protrude in the transport direction (insertion direction) of the tray 50. Is formed.

  A plurality (two in this embodiment) of the tongue pieces 57 are arranged at a predetermined interval in a direction (left-right direction in FIG. 6, that is, the width direction) orthogonal to the conveyance direction of the tray 50 as illustrated. In plan view, as shown in detail in FIG. 8A, it is formed to taper toward the tip. In the present embodiment, the width a is set to about 9 mm, and the protruding amount b from the tip 56 is set to about 3 mm. In the present embodiment, as shown in the figure, it is formed so as to draw a gentle arc toward the tip, but the present invention is not limited to this, and any shape that tapers toward the tip may be used. Absent. Alternatively, the shape may not be tapered toward the tip.

Next, the tongue piece portion 57 has a shape as shown in FIG. 8B in a vertical cross section of the tray 50 (a cross section when the tray 50 is cut along the transport direction). That is, the taper is tapered toward the tip, and the bottom surface 57b is formed so as to form a flat surface together with the bottom surface 51a of the tray body 51.
Further, the front end 56 of the tray 50 is tapered toward the front end in the same manner as the tongue piece portion 57, and its upper surface 56 a is formed so as not to protrude upward from the upper surface 57 a of the tongue piece portion 57.

  In this embodiment, the thickness c of the tip of the tongue piece 57 is about 0.5 mm, the inclination angle of the upper surface 57a of the tongue piece 57 (inclination angle with respect to the bottom surface 51b of the tray body 51) is about 8 °, and the tip The inclination angle of the upper surface 56a of 56 (inclination angle with respect to the bottom surface 51b of the tray body 51) is about 12 °.

  Hereinafter, the effect of the tongue piece portion 57 will be described with reference mainly to FIG. As described with reference to FIG. 3, when inserting the tray 50 into the printer 1 (feeding to the paper conveyance path), the rear end of the printer 1 is connected via the tray guide 18 with the front end 56 of the tray 50 as a head. Insert it toward the side. At this time, the discharge driven roller 45 is in a state of being separated from the discharge driving roller 44 as shown in FIG. 5 as the tray guide 18 is in an open state (use state). The tray 50 can be inserted (set) into the printer 1 without contacting the discharge driven roller 45, that is, without damaging the optical disk D. In the present embodiment, when the tray 50 is inserted (set) by the user into the printer 1, the front end of the tray 50 reaches the platen 41 (not the transport driving roller 33 and the transport driven roller 34). Thereafter, the tray 50 is automatically sent toward the transport driving roller 33 and the transport driven roller 34 by transport means (not shown).

  Here, in order to perform sub-scan feed of the tray 50 by the rotation of the transport driving roller 33, the front end 56 of the tray 50 is moved between the transport driving roller 33 and the transport driven roller 34 that is in pressure contact with the transport driving roller 33. Although it is necessary to interpose it, a tongue piece 57 is formed integrally with the tray 50 at the front end 56 of the tray 50 so as to protrude in the conveying direction of the tray 50. Therefore, when the tray 50 is sent toward the transport driving roller 33 and the transport driven roller 34, the tongue piece 57 first enters between the transport driving roller 33 and the transport driven roller 34 (FIG. 9B), which is a trigger. Then, the front end 56 of the tray 50 enters between the transport driving roller 33 and the transport driven roller 34, and the tray 50 is eventually nipped by both rollers (FIG. 9C).

  That is, since the area of the front end of the tray 50 (as viewed in plan) is extremely reduced by the tongue portion 57, the front end 56 of the tray 50 can be easily inserted between the transport driving roller 33 and the transport driven roller 34 with a small force ( In other words, it is possible to easily pry between the two rollers with a small force). Accordingly, this allows the tray 50 to be surely inserted between the transport driving roller 33 and the transport driven roller 34 without using means for separating (release) the transport driven roller 34 from the transport driving roller 33. 1 can be prevented from increasing in cost.

  And since the tongue piece part 57 is integrally formed with the tray 50 (tray main body 51), while being able to prevent the cost increase of the tray 50, intensity | strength improves and when feeding the tray 50, it is. Damage is unlikely to occur. In addition, since the bottom surface 51b of the tray 50 (tray body 51) can be formed smoothly without a step, the sub-scan feed of the tray 50 can always be performed with high accuracy.

  The tongue portion 57 is a stress concentration portion where stress generated in the tray 50 is concentrated when the tray 50 is sandwiched between the conveyance drive roller 33 and the conveyance driven roller 34 (in the present embodiment, the stress is the largest). Part). That is, since the area of the front end of the tray 50 (as viewed in plan) is extremely reduced by such a stress concentration portion, the front end of the tray 50 can be easily inserted between the transport driving roller 33 and the transport driven roller 34 with a small force. be able to.

  Further, since the tongue piece portion 57 has a shape that tapers toward the tip in the longitudinal sectional view of the tray 50, the tray 50 is more easily separated between the transport driving roller 33 and the transport driven roller 34. Can get in. In addition, the front end 56 of the tray 50 is tapered toward the front end in the longitudinal sectional view of the tray 50, and the upper surface 56a is formed so as not to protrude upward from the upper surface 57a of the tongue piece portion 57. When the tip 56 of 50 enters between the conveyance driving roller 33 and the conveyance driven roller 34, it can smoothly enter without being caught.

  That is, as shown in FIG. 10, in a configuration in which a plurality of transport driven rollers 34 are provided in the width direction of the tray 50, when the tray 50 is fed toward the transport drive roller 33 and the transport driven roller 34, the transport drive roller 33 and When the tongue piece 57 passes between the conveyance follower roller 34, the conveyance follower roller (indicated by reference numerals 34B and 34D in FIG. 10) that presses against the tongue piece 57 and the tongue piece 57 does not come into pressure contact. In this state, there are mixed transport driven rollers (indicated by reference numerals 34A and 34C in FIG. 10).

  Here, the transport driven rollers 34A and 34C in the free state have a smaller separation width from the transport drive roller 33 than the transport driven rollers 34B and 34D pressed against the tongue piece 57 (FIG. 9B). reference). Therefore, from this state, when the front end 56 of the tray 50 passes between the transport driving roller 33 and the transport driven roller 34, the front end 56 of the tray 50 may be caught by the transport driven roller 33. However, since the front end 56 of the tray 50 is tapered as described above, the front end 56 of the tray 50 can be smoothly passed between the transport driving roller 33 and the transport driven roller 34 without being caught. Further, since the upper surface 56 a of the tip 56 does not protrude from the upper surface 57 a of the tongue piece portion 57, the above-described prying effect between the conveyance driving roller 33 and the conveyance driven roller 34 by the tongue piece portion 57 is not hindered.

  Note that the tongue piece 57 has a shape that tapers toward the tip even in a plan view as described above, so that the tray 50 can be more easily separated between the transport driving roller 33 and the transport driven roller 34. You can get in between. In addition, since a plurality of tongue pieces 57 are provided at a predetermined interval in the width direction of the tray 50, when the front end 56 of the tray 50 enters between the transport driving roller 33 and the transport driven roller 34. The skew (skew) of the tray 50 can be prevented or reduced.

  In addition, the tongue piece 57 is twisted to bias the holder 31 so that the conveyance driven roller 34 comes into pressure contact with the conveyance driving roller 33 in relation to the holder 31 that pivotally supports the conveyance driven roller 34 as shown in FIG. The conveyance driven roller 34 is located at a position furthest away from the position where the coil spring 36 applies a biasing force to the holder 31 (in this embodiment, approximately the center in the width direction of the holder 31 (the direction perpendicular to the conveyance direction of the tray 50)). It is arranged to press. In other words, since the pressure contact force received from the conveyance driven roller 34 is arranged so as to be in pressure contact with the conveyance driven roller 34 at the position where the pressure is the weakest, the tray 50 is moved between the conveyance drive roller 33 and the conveyance driven roller 34 with a lighter force. You can get in between.

  Further, in the present embodiment, as shown in FIG. 10, in the relationship between the holder 31 and the transport driven roller 34, the two tongue pieces 57 are at substantially the same position, that is, positions where the pressure contact force received from the transport driven roller 34 becomes equal. Is arranged. Specifically, in this embodiment, as shown in FIG. 10, the transport driven rollers 34 (34 </ b> B and 34 </ b> D) pivotally supported on the right side (right side in FIG. 10) of the holder 31 are biased to the right side from the center in the width direction. It is arranged at a location corresponding to the position.

  That is, the urging force of the torsion coil spring 36 acts on the holder 31 at a substantially central position in the width direction (a direction orthogonal to the conveyance direction of the tray 50), whereby the conveyance driven roller 34 is pressed against the conveyance driving roller 33. Is biased in the direction. Therefore, if the positions where the two tongue pieces 57 are brought into pressure contact with the conveyance driven roller 34 are different, the force with which the conveyance driven roller 34 presses the tongue piece 57 is different. There is a possibility that skewing may occur due to an imbalance of force when inserted between the roller and the transport driven roller 34.

  However, as described above, the two tongue pieces 57 are substantially in the same position (in this embodiment, the pressure contact with the transport driven roller 34) in relation to the holder 31 and the transport driven roller 34 arranged in the width direction of the tray 50. (The position where the force becomes the weakest)), there is no variation in the pressing force when the transport driven roller 34 presses the tongue piece 57, and the skew of the tray 50 can be prevented. Yes.

  In the present embodiment, the tray 50 on which the optical disk D can be set has been described as an example of the medium to be transported. However, the present invention is not limited to the tray 50, and a similar protruding portion may be used even for thick paper such as board paper. Can be easily inserted between the transport drive roller 33 and the transport driven roller 34 without using the release means of the transport driven roller 34 and without causing damage during feeding. Is possible.

  DESCRIPTION OF SYMBOLS 1 Inkjet printer, 2 Feeding device, 3 Paper discharge port, 11 Housing, 12 Upper cover, 13 Stacker, 14 Stacker main body, 15 Sub stacker, 18 Tray guide, 21 Hopper, 23 Feed roller, 25, 26 Guide roller, 27 Retarder, 29 guide, 31 holder, 32 swing shaft, 33 transport drive roller, 34 transport driven roller, 35 carriage, 37 carriage guide shaft, 39 inkjet recording head, 41 platen, 42 recess, 43 rib, 44 discharge drive roller, 45 discharge driven roller, 46 auxiliary roller, 47 frame, 50 tray, 51 tray body, 52 set part, 53 convex part, 54 eject hole, 56 tip, 57 tongue piece part, D optical disk, P recording paper.

Claims (5)

A recording apparatus including a first roller and a second roller facing the first roller, and a plate-shaped object that is nipped by the first roller and the second roller and conveyed into the recording apparatus. A recording apparatus system comprising a medium,
The recording device comprises:
A holder member having the second roller;
An urging means for applying an urging force to the first position of the holder member and transmitting the urging force to the first roller via the second roller;
The transport medium is a protrusion that protrudes in the transport direction from a second position of the tip of the transport medium, and includes a protrusion that receives the biasing force by the biasing means during the transport. The protrusion disposed at the second position passes through a position away from the first position in a direction orthogonal to the conveyance direction during the conveyance, so that the first roller and the second roller A recording apparatus system that separates a roller. The upper surface of the protrusion is formed to be higher than the upper surface of the tip;
The recording apparatus system according to claim 1, wherein the tip portion receives the urging force by the urging unit during the conveyance.   4. The protruding portion according to claim 1, wherein the protruding portion has a shape that tapers toward a tip in a cross-sectional view when cut along a transport direction of the transported medium. 2. A recording apparatus system according to item 1.   5. The device according to claim 1, wherein the front end portion has a shape that tapers toward the front end in a cross-sectional view when cut along the transport direction of the transported medium. 2. A recording apparatus system according to item 1.   The projecting portion has a shape that tapers toward the tip so that an area in which the projecting portion and the first roller come into contact with each other gradually increases during the conveyance. The recording apparatus system according to any one of claims 1 to 5.

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