JP2017149521A - Recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure stable operation of edge guides while disposing a biasing member for holding positions of the edge guides moving in a width direction of a medium in a space-saving manner.SOLUTION: A recording device comprises: a medium setting section 33 setting a medium P; a pair of edge guide sections 34a and 34b being provided on the medium setting section 33, guiding both side edges in a width direction intersecting with a medium transportation direction, and constituted so as to be movable in a direction in which they come close to each other and are separated from each other; a rack-and-pinion mechanism 35 having rack sections 36a and 36b individually provided on the pair of edge guide sections 34a and 34b and a pinion gear section 37 engaging with the rack sections 36a and 36b, and moving the other edge guide section 34b in operative association with movement of one edge guide section 34a; a gear opposing surface 33b facing the pinion gear section 37; and a thin plate-like biasing member 41 bringing biasing force between the pinion gear section 37 and the gear opposing surface 33b and imparting rotational resistance to the pinion gear section 37.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a recording apparatus including an edge guide that guides a side edge of a conveyed medium.

  In a recording apparatus typified by an ink jet printer, an edge guide that guides a side edge in a width direction that intersects a medium conveyance direction is provided in a medium setting portion of a medium to be conveyed, and the edge guide corresponds to the medium size An edge guide device configured to be slidable in the width direction may be provided (for example, Patent Documents 1 to 3).

In such an edge guide device, when the edge guide is slid, a biasing member is provided that presses the friction member toward the slide surface (sliding contact surface) of the medium setting unit against the edge guide. In some cases, the edge guide is configured to be held at the stop position.

JP 2011-246252 A JP 2011-246248 A JP 2012-111161 A

In Patent Document 1 and Patent Document 2, the friction member that is held by the friction member holder and contacts the sliding contact surface provided in the medium accommodating portion is configured to be pressed against the sliding contact surface by the urging member. In such a configuration, since the biasing force of the biasing member is applied to the friction member via the friction member holder, the thickness in the biasing direction by the biasing member is increased, leading to an increase in the size of the apparatus. . If the thickness in the urging direction is not sufficient, it is conceivable to increase the spring constant of the spring as the urging member. However, if the spring constant is increased, the operating force of the edge guide varies. May occur.

Further, when the friction member and the sliding contact surface come into contact with each other, the surface of the friction member may be scraped. When the sliding surface is the mounting surface of the medium mounting portion, the friction member may be left on the mounting surface due to scraping of the friction member.

In the edge guide device (recording medium guide device) of Patent Document 3 (see FIGS. 4 to 6 in particular), in order to avoid an increase in the size of the device in the direction intersecting the placement surface of the medium placement portion, the medium placement A biasing portion (plate) that includes a second sliding surface 8 that is arranged in parallel with the first sliding surface 7 that constitutes the placement surface of the placing portion, and biases the second sliding surface 8 in the feeding direction. The structure which provides the shape contact member 21 and the coil spring 5) is disclosed.

In the configuration of Patent Document 3, for example, a pair of edge guides that guide both side edges in the width direction of the medium are provided, and when one edge guide is moved, the other moves following the other, Cited Document 1 or Cited Document 2 In such a configuration, the load on the one side and the load on the other side are different, and it is difficult to ensure stable operation of the edge guide.
In order to make the loads in both edge guides uniform, it is possible to provide the urging portions in both edge guides, but this leads to an increase in the number of parts and an increase in cost.

  Accordingly, an object of the present invention is to provide a recording apparatus including an edge guide that can move in the width direction of a medium to be conveyed. Is to realize. Another object is to ensure stable operation of the edge guide.

  In order to solve the above problems, a recording apparatus according to a first aspect of the present invention includes a medium setting unit for setting a medium to be conveyed, and both sides in the width direction that are provided in the medium setting unit and intersect the medium conveying direction. A pair of edge guide portions configured to guide edges and move in directions toward and away from each other, a rack portion provided in each of the pair of edge guide portions, and a pinion gear portion engaged with the rack portion A rack and pinion mechanism that moves the other edge guide portion in conjunction with the movement of one edge guide portion, a gear facing surface that faces the pinion gear portion, and the pinion gear portion and the gear facing A thin plate-like urging member that provides an urging force to the surface and imparts rotational resistance to the pinion gear portion.

According to this aspect, since the pinion gear portion is provided with rotational resistance by the thin plate-like urging member that provides the urging force between the pinion gear portion and the gear-opposing surface, the urging member is disposed in a space-saving manner. can do. Further, since the biasing member is provided in the pinion gear portion of the rack and pinion mechanism, it becomes possible to simultaneously apply a biasing force to both edge guide portions that move in conjunction with each other, and both edge guides operate uniformly and stably. Can be secured.

  A recording apparatus according to a second aspect of the present invention is the recording apparatus according to the first aspect, wherein the urging member includes a hole provided in the center, and a sloped part extending in a taper shape in the radial direction from the hole. It is a disc spring comprised.

According to this aspect, the disc spring is used as the urging member, and the same effect as the first aspect is achieved. Further, the urging force can be uniformly applied to the edge guide portion to be urged.

  The recording apparatus according to a third aspect of the present invention is the recording apparatus according to the second aspect, wherein the disc spring makes an outer peripheral portion contact the gear facing surface between the gear facing surface and the pinion gear portion, The pinion gear portion and the slope portion are disposed in contact with each other.

  According to this aspect, the disc spring has an outer peripheral portion in contact with the gear facing surface between the gear facing surface and the pinion gear portion, and the pinion gear portion is in contact with the slope portion. Therefore, when the pinion gear rotates, the disc spring is fixed at the outer peripheral portion, that is, the gear-opposing surface side in contact with the edge, and is in sliding contact with the pinion gear portion. In addition, the pinion gear portion is in contact with the slope portion of the disc spring. With the above contact form, the disc spring does not scrape both the gear-opposing surface and the pinion gear part, or the degree of scraping can be suppressed.

  A recording apparatus according to a fourth aspect of the present invention is characterized in that, in any one of the first to third aspects, a friction member that contacts the urging member is provided.

  According to this aspect, the rotational resistance given to the pinion gear portion can be increased by the contact load with the friction member.

  The recording apparatus according to a fifth aspect of the present invention is characterized in that, in the third aspect, a friction member is provided between the biasing member and the pinion gear.

  According to this aspect, the frictional member can increase the rotational resistance applied to the pinion gear portion.

  The recording apparatus according to a sixth aspect of the present invention is the recording apparatus according to the fourth aspect, wherein the friction member is between the biasing member and the gear-opposing surface and between the biasing member and the pinion gear portion. It is characterized by being provided in.

  According to this aspect, since the friction member is provided on both sides of the biasing direction of the biasing member, a higher biasing force can be obtained by the biasing member.

  A recording apparatus according to a seventh aspect of the present invention is the recording apparatus according to any one of the first to sixth aspects, further comprising load adjusting means capable of adjusting a load of the urging member. .

  According to this aspect, the load of the urging member can be easily adjusted by the load adjusting means.

1 is an external perspective view of a printer according to the present invention. FIG. 2 is an external perspective view illustrating a state in which a manual cover is opened in the printer illustrated in FIG. 1. FIG. 3 is a side sectional view showing a paper conveyance path of the printer according to the invention. The perspective view which shows the state which removed the exterior of the apparatus main body and the medium setting part appeared. The perspective view which looked at the medium setting part from the back side. FIG. 6 is an exploded perspective view of FIG. 5. AA arrow sectional drawing of FIG. FIG. 3 is a side sectional view around an edge guide part. The perspective view which shows an example of a biasing member. FIG. 6 is a side sectional view around an edge guide portion according to a second embodiment. Side sectional view around edge guide part according to embodiment 3

[Example 1]
First, an outline of a recording apparatus according to an embodiment of the present invention will be described. In this embodiment, an ink jet printer (hereinafter simply referred to as a printer) is taken as an example of a recording apparatus.
FIG. 1 is an external perspective view of a printer according to the present invention. FIG. 2 is an external perspective view showing a state where the manual feed cover is opened in the printer shown in FIG. FIG. 3 is a side cross-sectional view showing the paper conveyance path of the printer according to the present invention. FIG. 4 is a perspective view illustrating a state in which the exterior of the apparatus main body is removed and the medium setting unit appears. FIG. 5 is a perspective view of the medium setting unit viewed from the back side. FIG. 6 is an exploded perspective view of FIG. 7 is a cross-sectional view taken along line AA in FIG. FIG. 8 is a side sectional view of the periphery of the edge guide portion. FIG. 9 is a perspective view illustrating an example of an urging member.

<About the overall configuration of the printer>
The overall configuration of the printer 1 will be outlined below with reference to FIGS.
The printer 1 (FIG. 1) according to the present invention includes a scanner unit 3 (FIG. 3) above an apparatus main body (recording unit) 2 that performs ink jet recording on a recording sheet as an example of a medium, that is, an ink jet recording function. In addition to this, it is configured as a multifunction machine having a scanner function.
As the recording paper, plain paper, coated paper, OHP (overhead projector) sheet, glossy paper, glossy film and the like are used.

In the XYZ coordinate system shown in each figure, the X direction is the scanning direction of the recording head, and the Y direction is the apparatus depth direction. The Z direction is the direction of gravity and indicates the device height direction. Further, the + Y direction side is the front side of the apparatus, and the −Y direction side is the back side of the apparatus. Also, the right side when viewed from the front side of the apparatus is the + X direction, and the left side is the −X direction. Further, the + Z direction is the upper side of the apparatus (including the upper and upper surfaces), and the −Z direction side is the lower side of the apparatus (including the lower and lower surfaces).
In the following, the conveyance direction (+ Y direction side) in which the recording paper is conveyed in the printer 1 is referred to as “downstream”, and the opposite direction (−Y direction side) is referred to as “upstream”.

The scanner unit 3 (FIG. 3) is provided so as to be rotatable with respect to the apparatus main body 2. By rotating, the scanner unit 3 (FIG. 1 or FIG. 3) is in a closed state (FIG. 1 or FIG. 3). It can take.
The upper cover 4 of the scanner unit 3 is a cover that can be opened and closed. By opening the cover 4 (FIG. 1), the document table 3a (FIG. 3) of the scanner unit 3 appears.

  Reference numeral 5 on the front side of the apparatus denotes an operation panel including a power button, operation buttons for performing various print settings / recording, a display unit for displaying print setting contents and print image previews, and the like.

  Reference numeral 9 is a cover that can be opened and closed provided on the lower tray 13 (FIG. 3) on the front side of the apparatus. As shown in FIG. 3, the lower tray 13, the upper tray 14, and the paper receiving tray 8 are exposed by opening the cover 9.

  The paper discharge receiving tray 8 is provided so as to be able to take a state (FIG. 1) stored in the apparatus main body 2 by a motor (not shown) and a state protruding to the front side of the apparatus main body 2 (FIG. 3). By being in a state of protruding to the front side of the apparatus main body 2, it is possible to receive a recording sheet that is recorded and discharged.

  The lower tray 13 and the upper tray 14 provided on the upper tray 13 can accommodate a plurality of recording sheets, and each can be independently attached to and detached from the apparatus main body 2. Further, even if one side is not attached, the recording paper can be sent out from the attached tray as long as the other side is attached.

Reference numeral 6 denotes an openable and closable manual feed cover in the upper rear portion of the apparatus main body 2. By opening the manual feed cover 6 as shown in FIG. 2, recording paper using the manual feed tray 7 (FIGS. 2 and 3) is provided. Paper can be fed manually.
The manual feed tray 7 supports a plurality of recording sheets and can be set, and a pair of edges that are provided in the medium setting section 33 and guide both side edges in the width direction intersecting the recording sheet conveyance direction. Guide portions 34a and 34b (see also FIG. 4). The configuration of the manual feed tray 7 will be further described later.

Next, the paper conveyance path of the printer 1 will be described with reference to FIG. First, the recording paper feeding from the manual feed tray 7 will be described, and then the recording paper feeding from the lower tray 13 or the upper tray 14 provided at the bottom of the apparatus will be described.
In FIG. 3, the feeding path T1 of the paper P from the manual feed tray 7 is indicated by a two-dot chain line. Further, the feeding path T2 of the paper P from the lower tray 13 or the upper tray 14 to the upstream side of the transport driving roller 24 is indicated by a dotted line.

The recording paper set on the medium setting unit 33 of the manual feed tray 7 is picked up by the second feeding roller 21 and sent to the downstream side.
At the end of the second feeding roller 21, a transport driving roller 24 that is rotationally driven by a motor (not shown) and a transport driven roller 25 that is driven to rotate in contact with the transport driving roller 24 are provided. The paper P is sent under the recording head 30.

  Subsequently, the recording head 30 that discharges ink as liquid is provided at the bottom of the carriage 29, and the carriage 29 is reciprocated in the main scanning direction (the front and back directions in FIG. 2 and FIG. 3 in the X-axis direction) by a motor (not shown). It is driven to move.

A medium support member 28 that supports the paper P to be conveyed is provided at a position facing the recording head 30, and a space (PG) between the paper P and the recording head 30 is defined by the medium support member 28. The
On the downstream side of the medium support member 28, a discharge driving roller 31 that is rotationally driven by a motor (not shown) and a discharge driven roller 32 that is driven to rotate in contact with the discharge driving roller 31 are provided. The sheet P on which recording has been performed by the recording head 30 is discharged toward the above-described discharge receiving tray 8 by these rollers.

The printer 1 also includes a lower tray 13 and an upper tray 14 at the bottom of the apparatus, and feeds recording sheets one by one from the lower tray 13 or the upper tray 14.
The upper tray 14 slides between a feedable position (FIG. 3) and a retracted position (not shown) moved to the front side of the apparatus (rightward in FIG. 3: the pulling direction side of the upper tray 14). And is configured to displace the feedable position and the retracted position in response to the power of a motor (not shown).
In FIG. 3, the paper accommodated in the lower tray 13 is indicated by reference numeral P <b> 1, and the paper accommodated in the upper tray 14 is indicated by reference numeral P <b> 2 (hereinafter, there is no need to distinguish between them). "Paper P").

  A first feeding roller (also referred to as a pickup roller) 10 that is rotationally driven by a motor (not shown) is provided on a roller support member 11 (also referred to as a pickup arm or a swinging member) that swings around a rotation shaft 12. When the upper tray 14 is at the abutting position slid to the rearmost side of the apparatus (left direction in FIG. 3: the mounting direction side of the upper tray 14 and also the paper feed direction side), that is, the upper tray 14 The first feeding roller 10 rotates in contact with the uppermost one of the sheets P2 accommodated in the upper tray 14 to feed the uppermost sheet P2 from the upper tray 14 at the feedable position. .

On the other hand, when the upper tray 14 is slid to the front side (+ Y side) of the apparatus, that is, when the upper tray 14 is in the retracted position, the roller support member 11 swings around the rotation shaft 12, The first feeding roller 10 can come into contact with the uppermost one of the sheets P1 accommodated in the lower tray 13, and the first feeding roller 10 rotates so that the uppermost sheet P1 is placed in the lower tray. 13 is sent out.
As described above, the lower tray 13 and the upper tray 14 can feed paper from the other side even when either one is not attached.

  An intermediate roller 17 that is rotationally driven by a motor (not shown) is provided on the downstream side of the first feeding roller 10, and the sheet P is curved and reversed by the intermediate roller 17 and moves toward the front side of the apparatus. Reference numerals 19 and 20 are driven rollers that can be driven and rotated. At least the paper P is nipped by the driven roller 19 and the intermediate roller 17, and is nipped by the driven roller 20 and the intermediate roller 17 to the downstream side. Sent.

  The recording sheet sent along the feeding path T2 indicated by the dotted line merges with the feeding path T1 (two-dot chain line) in front of the transport driving roller 24 and the transport driven roller 25, and after that, manually on the downstream side. Similarly to the recording paper fed from the tray 7, the paper is transported by the transport driving roller 24 and the transport driven roller 25, and after being recorded by the recording head 30, the paper is received by the discharge driving roller 31 and the discharge driven roller 32. It is discharged toward the tray 8.

  When recording both sides of the paper P, the front side is recorded by the recording head 30 and then switched back so that the paper P enters the feeding path from the lower side of the intermediate roller 17. By reversing the curve, recording can be performed on the back surface of the paper P. Reference numeral 18 denotes a driven roller that can be driven to rotate by the rotation of the intermediate roller 17.

<About the configuration of the manual feed tray>
Next, the configuration of the manual feed tray 7 will be described below with reference to FIGS.
As described above, the manual feed tray 7 (FIG. 4) includes a medium setting portion 33 for setting recording paper and a pair of edge guide portions 34a and 34b for guiding both side edges in the width direction (X-axis direction) of the recording paper. I have.
The edge guide portions 34a and 34b are configured to be movable in directions toward and away from each other by a rack and pinion mechanism 35 (FIG. 5). The rack and pinion mechanism 35 includes rack portions 36a and 36b provided in the edge guide portions 34a and 34b, respectively, and a pinion gear portion 37 that engages with the rack portions 36a and 36b, and one of the edge guide portions 34a and 34b is moved. The other is moved in conjunction with. That is, when the edge guide part 34a is moved, the edge guide part 34b is also moved in conjunction with it, or when the edge guide part 34b is moved, the edge guide part 34a is also moved in conjunction with it.

  More specifically, as shown in FIG. 6, the rack portion 36 a of the edge guide portion 34 a includes an arm portion 38 a extending toward the edge guide portion 34 b and teeth 39 a that mesh with the pinion gear portion 37. Yes. Further, the rack portion 36 b of the edge guide portion 34 b is configured by an arm portion 38 b extending toward the edge guide portion 34 a and teeth 39 b that mesh with the pinion gear portion 37.

The pinion gear portion 37 (FIGS. 6 and 7) is rotatably provided on a shaft 40 (FIG. 6) provided on the back surface of the medium support surface 33 a of the medium setting portion 33. Hereinafter, the back surface of the medium support surface 33a on which the pinion gear portion 37 is provided is referred to as a gear facing surface 33b.
5 and 7, the edge guide portions 34a and 34b are provided on the medium support surface 33a side of the medium setting portion 33, and the rack portion 36a and the rack portion 36b are engaged with the pinion gear portion 37 on the gear facing surface 33b. Match.
Note that the rack portion 36b (teeth 39b) is engaged with the pinion gear portion 37 on the upper side in FIG. 6, and the rack portion 36a (teeth 39a) is engaged on the lower side (see also FIG. 5).

  With this configuration, when the edge guide portion 34a is slid in the −X direction of FIG. 5, that is, in a direction approaching the edge guide portion 34b, the edge guide portion 34b is synchronized with the edge guide portion 34a and approaches the edge guide portion 34a. Displacement (+ X direction in FIG. 5). Conversely, when the edge guide portion 34a is slid in the direction away from the edge guide portion 34b (the + X direction in FIG. 5), the edge guide portion 34b is moved away from the edge guide portion 34a in synchronization with the edge guide portion 34a. It is displaced in the (X direction in FIG. 5).

Here, the rack and pinion mechanism 35 is provided with a biasing member 41 for holding the edge guide portions 34a and 34b at the stop position. In this embodiment, the urging member 41 is provided between the gear-opposing surface 33 b facing the pinion gear portion 37 and the pinion gear portion 37. The urging member 41 is a thin plate-like member as shown in FIG. 6, and provides an urging force 42 (FIG. 7) between the pinion gear portion 37 and the gear facing surface 33b. As a result, rotational resistance is applied to the pinion gear portion 37, and the edge guide portions 34a and 34b are held at the stop positions.

As the biasing member 41 in this embodiment, a disc spring 41a as shown in FIG. 9 is used. The disc spring 41a is formed of a thin plate, and includes a hole portion 43 provided at the center and a slope portion 44 that extends from the hole portion 43 in a taper shape in the radial direction.
As shown in FIG. 8, the hole 43 of the disc spring 41 a is inserted into the shaft 40 on which the pinion gear portion 37 is provided, and is provided coaxially with the pinion gear portion 37.

As described above, by providing the thin plate-like biasing member 41 between the pinion gear portion 37 and the gear facing surface 33b of the rack and pinion mechanism 35, the following operational effects are obtained. That is, since the pinion gear portion 37 is given rotational resistance by the thin plate-like urging member 41 (disc spring 41a) that provides an urging force between the pinion gear portion 37 and the gear facing surface 33b, the urging member 41 is saved in space. Can be arranged.

Further, since the urging member 41 is provided in the pinion gear portion 37 of the rack and pinion mechanism 35, it becomes possible to apply an urging force to both the edge guide portions 34a and 34b that move in conjunction with each other, and both the edge guides 34a. , 34b can be ensured in a uniform and stable operation. Moreover, since the disc spring 41a which can be provided coaxially with the pinion gear part 37 is used as the biasing member 41, the biasing force can be uniformly applied to the edge guide parts 34a and 34b.

In the present embodiment, the disc spring 41a, as shown in FIG. 8, brings the outer peripheral portion 45 (see also FIG. 9) into contact with the gear facing surface 33b between the gear facing surface 33b and the pinion gear portion 37, and the pinion. The gear portion 37 and the slope portion 44 are arranged in contact with each other.
Since the disc spring 41a is arranged in this manner, when the pinion gear 37 is rotated, the disc spring 41a is fixed to the outer peripheral portion 45, that is, the gear facing surface 33b side that is in contact with the edge, and the pinion gear portion 37 It will be in the state of sliding contact. In addition, the pinion gear portion 37 is in contact with the slope portion 44 of the disc spring 41a. With the above contact form, the disc spring 41a does not scrape any of the gear facing surface 33b and the pinion gear portion 37, or the degree of scraping can be suppressed.
In addition, although the contact part by the side of the pinion gear part 37 in the disk spring 41a is the state contacted by the slope part 44 for the said reason, the hole peripheral part 46 (FIG. 9) may be sufficient.

  Further, the shaft 40 is provided with a screw 47 (FIGS. 5 and 8) for preventing the pinion gear 37 from coming off. The screw 47 functions as a load adjusting means capable of adjusting the load of the biasing member 41 in addition to restricting the movement of the pinion gear 37 in the direction in which it is removed from the shaft 40. In this embodiment, the load of the urging member 41 can be adjusted by tightening or loosening the screw 47.

Note that a plurality of the disc springs 41a may be arranged in a stacked manner. The urging force can be increased by overlapping a plurality of disc springs 41a.
As the urging member 41, in addition to the disc spring 41a, a thin plate-like spring member, for example, a ring-like thin plate member having a spring property such as a bending washer, a wave washer, a spring washer, or the like can be used.
A conical coil can also be used. A conical coil (referred to as a conical coil or a conical spring) has a smaller thickness than that of a normal coil (a coil having a constant coil diameter), and thus can be arranged in a space-saving manner.

In addition to the configuration in which the biasing member 41 provides frictional resistance to the rotation of the pinion gear portion 37, for example, friction means is applied to the guide portion 49 that contacts the contact portion 48 (FIGS. 5 and 6) provided on the arm portion 38b. It may be configured so that frictional resistance is provided to the slide of the edge guide portion 34b. Of course, it is also possible to provide a friction means in the guide part 50 which the arm part 38a by the side of the edge guide part 34a contacts.
Further, the friction means is provided between the slide groove 52 (FIG. 4) engaged and guided by the convex portion 51 (only disclosed on the side of the edge guide portion 34 b in FIG. 8) provided on the edge guide portions 34 a and 34 b. You can also

[Example 2]
In the second embodiment, another embodiment of the configuration for biasing the edge guide portion will be described based on FIG. FIG. 10 is a side sectional view of the periphery of the edge guide portion according to the second embodiment.
In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and description of the components is omitted.

  The present embodiment is characterized in that a rack and pinion mechanism 35 that is a moving mechanism of the edge guide portions 34 a and 34 b provided in the medium setting portion 33 includes a friction member 55 that contacts the biasing member 41. In this embodiment, the biasing member 41 is a disc spring 41a.

By providing the friction member 55 in contact with the biasing member 41, the contact load with the friction member 55, that is, the contact load between the biasing member 41 and the friction member 55, or the pinion gear portion 37 and the friction member 55. The rotational resistance given to the pinion gear part 37 can be increased by the contact load between the two.
In the second embodiment, the friction member 55 is provided between the biasing member 41 and the pinion gear 37. By providing the friction member 55 at this position, the rotational resistance applied to the pinion gear portion 37 can be effectively increased.

When the disc spring 41a is used as the urging member 41, the outer peripheral portion 45 (FIG. 9) of the disc spring 41a is brought into contact with the gear facing surface 33b, and the friction member 55 and the inclined portion 44 are brought into contact (FIG. 10). ) Is desirable. Of course, the hole peripheral edge 46 (FIG. 9) of the disc spring 41a may be disposed so as to contact the friction member 55.
The friction member 55 is formed in a ring shape, and can be inserted into the shaft 40 on which the pinion gear portion 37 is provided in the same manner as the disc spring 41a, and can be arranged coaxially with the pinion gear portion 37.

[Example 3]
In the third embodiment, still another embodiment of the configuration for biasing the edge guide portion will be described with reference to FIG. FIG. 11 is a side sectional view of the periphery of the edge guide portion according to the third embodiment.
In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and description of the components is omitted.

In the present embodiment, the friction members 56 a and 56 b are provided between the biasing member 41 (the disc spring 41 a) and the gear facing surface 33 b and between the biasing member 41 and the pinion gear portion 37. That is, the two friction members 56a and 56b are provided on both sides of the biasing member 41, and the biasing member 41 is sandwiched between the friction members 56a and 56b.
Thus, by providing the friction members 56a and 56b on both sides of the urging direction of the urging member 41, between the gear facing surface 33b and the friction member 56a and between the disc spring 41a and the friction member 56a. The rotational resistance applied to the pinion gear portion 37 can be effectively increased by the contact loads between the disc spring 41a and the friction member 56b and between the pinion gear portion 37 and the friction member 56b.

When the disc spring 41a is used as the urging member 41, the outer peripheral portion 45 (FIG. 9) of the disc spring 41a is brought into contact with the friction member 56a provided on the gear facing surface 33b side, and the friction member on the pinion gear portion 37 side. It is desirable to arrange 56b and the slope 44 in contact with each other (FIG. 11). Of course, the hole peripheral edge 46 (FIG. 9) of the disc spring 41a may be disposed so as to contact the friction member 56b.
The friction members 56a and 56b are also formed in a ring shape like the friction member 55 of the second embodiment, and can be inserted into the shaft 40 on which the pinion gear portion 37 is provided.

  Further, the friction member is provided when the friction member 55 is provided between the biasing member 41 and the pinion gear portion 37 as in the second embodiment, or when the biasing member 41 is biased as in the third embodiment. In addition to the case where the friction members 56a and 56b are provided on both sides in the direction, the friction members 56a and 56b may be provided only between the biasing member 41 and the gear facing surface 33b.

Further, the present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.
For example, in the first to third embodiments, the urging configuration of the edge guide portions 34a and 34b in the medium setting portion 33 of the manual feed tray 7 has been described as an example, but the lower tray 13 and the upper tray in the apparatus main body 2 are exemplified. It can also be employed for an edge guide portion (not shown) provided for 14.

DESCRIPTION OF SYMBOLS 1 ... Printer, 2 ... Apparatus body, 3 ... Scanner unit, 4 ... Cover,
5 ... Operation panel, 6 ... Manual feed cover, 7 ... Manual feed tray, 8 ... Discharge receiving tray,
9 ... Cover, 10 ... First feeding roller, 11 ... Roller support member,
12 ... Rotating shaft, 13 ... Lower tray, 14 ... Upper tray,
17 ... Intermediate roller, 18 ... Follower roller, 19 ... Follower roller,
20 ... driven roller, 21 ... second feeding roller, 24 ... transport drive roller,
25 ... Conveyance driven roller, 28 ... Medium support member, 29 ... Carriage,
30 ... Recording head, 31 ... Ejection drive roller, 32 ... Ejection driven roller,
33 ... Medium setting part, 33a ... Medium support surface, 33b ... Gear facing surface,
34a, 34b ... edge guide part, 35 ... rack and pinion mechanism,
36a, 36b ... rack part, 37 ... pinion gear part, 38a, 38b ... arm part,
39a, 39b ... teeth, 40 ... shaft, 41 ... biasing member, 41a ... disc spring, 42 ... biasing force,
43 ... Hole part, 44 ... Slope part, 45 ... Outer peripheral part, 46 ... Hole periphery, 47 ... Screw,
48 ... contact part, 49 ... guide part, 50 ... guide part, 51 ... convex part, 52 ... slide groove,
55 ... friction member, 56a, 56b ... friction member,
P, P1, P2 Recording paper (medium)

Claims (7)

A medium setting unit for setting a medium to be conveyed;
A pair of edge guide portions provided in the medium setting portion, configured to guide both side edges in the width direction intersecting the medium conveyance direction, and to be movable in directions close to and away from each other;
Each of the pair of edge guide portions includes a rack portion and a pinion gear portion that engages with the rack portion, and moves the other edge guide portion in conjunction with the movement of the one edge guide portion. Rack and pinion mechanism,
A gear facing surface facing the pinion gear portion;
A thin plate-like biasing member that provides a biasing force between the pinion gear portion and the gear-opposing surface and provides a rotational resistance to the pinion gear portion;
A recording apparatus. The recording apparatus according to claim 1,
The recording apparatus according to claim 1, wherein the biasing member is a disc spring configured to include a hole portion provided at a center and a slope portion extending in a taper shape in a radial direction from the hole portion.   The recording apparatus according to claim 2, wherein the disc spring has an outer peripheral portion in contact with the gear-opposing surface between the gear-opposing surface and the pinion gear portion, and at the pinion gear portion and the slope portion. A recording apparatus, wherein the recording apparatus is arranged in contact with the recording apparatus.   4. The recording apparatus according to claim 1, further comprising a friction member that contacts the biasing member. 5.   The recording apparatus according to claim 3, wherein a friction member is provided between the biasing member and the pinion gear.   5. The recording apparatus according to claim 4, wherein the friction member is provided between the urging member and the gear facing surface and between the urging member and the pinion gear portion. A recording apparatus characterized by that.   The recording apparatus according to claim 1, further comprising a load adjusting unit capable of adjusting a load of the urging member.

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