JP2008247544A - Feeding device, recording device, and contact member - Google Patents

Abstract

A back tension received from an upper end of an inclined contact surface is further reduced when a medium fed to a feeding roller hits the lower portion of the inclined contact surface and gets over the inclined contact surface.
A medium support part that supports a sheet-like medium, an inclined contact surface that is inclined with respect to a horizontal direction and that contacts a front end of the medium supported by the medium support part, and the medium support part A feeding roller that is arranged above the medium and rotates while contacting the uppermost medium among the mediums supported by the medium support unit, thereby feeding the medium over the inclined contact surface A feeding device is provided in which the friction coefficient at the upper end of the inclined contact surface is smaller than the friction coefficient below the upper end of the inclined contact surface.
[Selection] Figure 1

Description

  The present invention relates to a feeding device, a recording device, and a contact member. More specifically, a feeding device having a medium supporting unit that supports a sheet-like medium, and a feeding roller that feeds the medium one by one from the medium supporting unit, a recording apparatus including the feeding device, and The present invention relates to a contact member used in the feeding device.

  In an apparatus that handles a sheet-like read original or a recording medium such as a facsimile, a scanner, a printer, and a copying machine, a feeding device that feeds the read original is used. This feeding device feeds sheet-like objects to be fed that are stacked and held one by one.

In Patent Literature 1, a sheet-like recording medium stacked on a pressure plate of a cassette body is rotated to feed a recording roller, and the recording medium fed by the sheet feeding roller is abutted against an inclined surface, and the uppermost sheet material is applied. A paper feeding device is described in which a feeding roller contacts and feeds by its frictional force. Further, in the feeding device described in Patent Document 1, the angle of the slope is changed corresponding to the recording medium.
JP 2003-112838 A

  In the feeding device described in Patent Document 1, when the recording medium is fed by the paper feed roller, the friction generated between the recording medium and the inclined surface as the recording medium hitting the inclined surface climbs the inclined surface. Strength increases. When this frictional force increases, the paper feed roller may not be able to feed the recording medium. In addition, since the upper end of the separation slope plate having a slope is a sharp shape, the recording medium that has crossed the slope is caught by the sharp portion of the upper end of the separation slope plate, thereby generating a force in the direction opposite to the conveyance direction of the recording medium. . This force becomes a resistance force when the recording medium over the slope is conveyed by a conveyance roller or the like. This resistance force is called so-called back tension.

  In order to solve the above-described problem, in the first embodiment of the present invention, a medium support part that supports a sheet-like medium, and a tip of the medium that is inclined with respect to the horizontal direction and supported by the medium support part And an inclined contact surface that is disposed above the medium support portion and rotates while contacting the uppermost medium among the media supported by the medium support portion. And a feeding roller that feeds over the slope, and the friction coefficient at the upper end of the inclined contact surface is smaller than the friction coefficient at the lower portion of the inclined contact surface. According to such a feeding device, when the medium fed to the feeding roller hits the lower portion of the inclined contact surface and gets over the inclined contact surface, the friction coefficient of the upper end of the inclined contact surface is inclined. The back tension received from the upper end of the inclined contact surface can be further reduced by being smaller than the friction coefficient at the lower portion of the contact surface.

  The inclined contact surface is preferably fixed to the medium support portion. Thereby, compared with the structure which changes the inclination angle of an inclination contact surface, back tension can be made small with a simple structure.

  In the above-described feeding device, the inclined contact surface may have a feeding auxiliary roller that is rotatable at the upper end. Thereby, the back tension can be surely reduced.

  In the above-described feeding device, the inclined contact surface may have a wrinkle at the lower portion and the upper end may be smooth. Thereby, the back tension can be reduced with a simple configuration.

  In the feeding device, the inclined contact surface may have a curved surface that is inclined more horizontally as it goes from the lower part toward the upper end. Thereby, the back tension can be reduced with a simple configuration.

  In the second embodiment of the present invention, a sheet-like medium is supported on the medium support unit, and the uppermost of the media supported on the medium support unit by the feeding roller disposed above the medium support unit. An inclined abutting surface that is arranged in a feeding device that feeds the medium by rotating while abutting against the medium, and that has an inclination with respect to the horizontal direction and that contacts the tip of the medium supported by the medium support unit An abutting member having a friction coefficient at the upper end of the inclined abutting surface that is smaller than the friction coefficient at the lower part than the upper end of the inclined abutting surface is provided. According to such an abutting member, the same effect as the first embodiment is achieved.

  In the third embodiment of the present invention, a medium support part that supports the sheet-like medium, an inclined contact surface that is inclined with respect to the horizontal direction and that contacts the tip of the medium supported by the medium support part, and In the case where a plurality of media are supported on the medium support unit, the medium support unit is inclined and abutted by rotating while contacting the uppermost medium among the plurality of media. A medium having a feeding roller for feeding over the surface, feeding a medium one by one, a recording head for ejecting ink onto the medium, and rotating by applying a rotational driving force, And a conveyance drive roller that conveys the image to a position facing the recording head. According to such a recording apparatus, the same effect as that of the first embodiment is achieved.

  The above summary of the invention does not enumerate all the necessary features of the present invention, and sub-combinations of these feature groups can also be the invention.

  Hereinafter, the present invention will be described through embodiments of the invention. However, the following embodiments do not limit the invention according to the scope of claims, and all combinations of features described in the embodiments are included. It is not necessarily essential for the solution of the invention.

  FIG. 1 is an overall perspective view showing an internal mechanism of the ink jet recording apparatus 10 exposed, and FIG. 2 is a schematic side view of the ink jet recording apparatus 10. The ink jet recording apparatus 10 is an example of the recording apparatus of the present invention. As shown in FIG. 1, an ink jet recording apparatus 10 includes a feeding device 200 attached to the rear (upper side in FIG. 1) of a frame 110 formed of, for example, stainless steel, and an internal mechanism formed around the frame 110. And have.

  The feeding device 200 includes a medium support unit 210, a frame connection unit 230, a feeding roller 240, and an urging plate 260. The medium support portion 210 is a substantially rectangular flat plate, and is attached to the frame 110 via the frame connection portion 230 so as to be inclined so that the frame 110 side faces downward. As shown in FIG. 2, the recording medium 30 is stacked and loaded on the upper surface of the medium support unit 210. The recording paper 30 is an example of a supply object. Further, a side support 222 and a slide support 224 are mounted on both sides of the medium support unit 210. The side support 222 and the slide support 224 are in contact with the side end portions of the recording paper 30 loaded in the medium support unit 210. As a result, the recording paper 30 stacked and loaded on the upper surface of the medium support unit 210 is held so that both sides thereof are substantially parallel to a conveyance path 35 described later. The side support 222 is fixed to one end on both sides of the medium support unit 210. On the other hand, the slide support 224 can move horizontally on the medium support part 210 from the other ends on both sides of the medium support part 210. Accordingly, even when the recording paper 30 having a different width is loaded, the slide support 224 can be moved and brought into contact with the side end portion of the recording paper 30.

  The feed shaft 242 is supported on the bearing portions 250 disposed on both sides of the medium support portion 210 so as to be rotatable, and is thus spanned on the medium support portion 210 in the width direction of the medium support portion 210. The feed shaft 242 is integrally formed of metal or resin. Further, the feed shaft 242 rotates by receiving power from a transport motor (not shown) via a rotary drive force transmission mechanism (not shown). The feed roller 240 is press-fitted into the feed shaft 242 and is fixed at a position corresponding to the approximate center of the medium support portion 210 in the width direction of the feed shaft 242, and rotates integrally with the feed shaft 242. The feeding roller 240 is made of rubber, for example. Further, the feeding roller 240 and the feeding shaft 242 may be integrally formed instead of the separate feeding roller 240 in which the feeding shaft 242 is press-fitted.

  The urging plate 260 is formed integrally with the urging plate rotating shaft 262 and is disposed in the vicinity of the end portion of the medium support portion 210 on the frame connecting portion 230 side, as shown in FIG. The urging plate rotation shaft 262 spans the width direction of the medium support unit 210 and is rotatably supported by the frame connection unit 230 on both sides of the medium support unit 210. The urging plate rotation shaft 262 receives power through a rotation driving force transmission mechanism (not shown) and rotates. Further, as shown in FIG. 1, the urging plate 260 is exposed through an opening formed at the center in the width direction at the end of the medium support portion 210 on the frame connection portion 230 side.

  In addition, the end of the medium support unit 210 on the frame connecting unit 230 side protrudes over the entire width direction of the medium support unit 210, and the leading end of the protruding portion is fed over the entire width direction of the medium support unit 210. The auxiliary roller 275 is rotatably arranged. Further, the surface on the medium support portion 210 side in the protruding portion is an inclined contact surface 270. The inclined contact surface 270 is inclined with respect to the horizontal direction in a state where the feeding device 200 is mounted on the frame 110. As shown in FIG. 2, when the recording paper 30 is stacked and loaded on the upper surface of the medium support unit 210, the leading end of the recording paper 30 comes into contact with the inclined contact surface 270. The inclined contact surface 270 and the feeding auxiliary roller 270 are examples of the contact member of the present invention.

  A frame 110 includes a conveyance unit including a conveyance driving roller 152 and a conveyance driven roller 153, a discharge driving roller 162, and a discharge driven roller along a conveyance path 35 indicated by an arrow in FIG. The discharge part having 163 is arranged in this order. The transport drive roller 152 is connected to the transport drive gear 150 and rotates by receiving power from a transport motor (not shown) via the transport drive gear 150. Further, the discharge drive roller 162 is connected to the discharge drive gear 160, and rotates in response to power from a transport motor (not shown) via the discharge drive gear 160, like the transport drive roller 152.

  In addition, a carriage 120 and a platen 130 are arranged to face each other between the conveyance unit and the discharge unit in the conveyance path 35. Further, the frame 110 is provided with a pair of pulleys 143 and a timing belt 144 that is stretched between the pair of pulleys 143. One of the pair of pulleys 143 is connected to a rotation shaft of a carriage motor 145 mounted on the frame 110 and is rotated by the carriage motor 145. A part of the timing belt 144 is held by the carriage 120. Therefore, when one of the pair of pulleys 143 is rotationally driven by the carriage motor 145, the carriage 120 is pulled by the timing belt 144 while being guided by a guide shaft and a guide rail 112 (not shown) disposed above the platen 130. As a result, it reciprocates above the platen 130. The reciprocating direction is a horizontal direction perpendicular to the transport path 35.

  The carriage 120 includes a recording head 122 on the lower surface thereof, that is, the surface facing the platen 130. The recording head 122 is coupled to an ink tank (not shown) via the flexible tube 140, and ink is supplied from the ink tank. The flexible tube 140 is handled together with a multi-core flat cable. This flat cable serves as a path for control signals and power transmitted or supplied to the carriage 120 from a control device and a power supply unit (not shown) arranged in the frame 110.

  A cap 146 is disposed on the side of the platen 130 (on the right side in FIG. 1). The cap 146 is connected to the pump motor 148 via a tube (not shown), and is used when cleaning the nozzles of the recording head 122 of the carriage 120.

  In the recording operation of the ink jet recording apparatus 10, first, when the feeding shaft 242 rotates, the feeding roller 240 that rotates together with the feeding shaft 242 moves the leading end of the recording paper 30 loaded on the upper surface of the medium support unit 210. Press against the inclined contact surface 270. At this time, the urging plate rotating shaft 262 rotates, so that the urging plate 260 applies a force to press the recording paper 30 toward the feeding roller 240 from below. Accordingly, the recording sheet 30 contacts the feeding roller 240 regardless of the number and thickness of the recording sheets 30 loaded on the upper surface of the medium support unit 210. Thereby, the feeding roller 240 can reliably press the recording paper 30 against the inclined contact surface 270.

  FIG. 3 is an enlarged schematic view of the vicinity of the frame connecting portion 230 of the feeding device 200. When the feeding roller 240 rotates in the direction indicated by the arrow in FIG. 3 and presses the recording paper 30 against the inclined contact surface 270, the uppermost sheet of the pressed recording paper 30, that is, the feeding roller 240 The recording paper 31 that is in direct contact moves upward above the inclined contact surface 270 while its leading end is bent.

  As the leading edge of the recording paper 31 moves above the inclined contact surface 270, the recording paper 31 is greatly bent, so that the force required to bend the recording paper 31 increases. Therefore, the frictional force that the recording paper 31 receives from the inclined contact surface 270 increases as the recording paper 31 moves. Here, the frictional force that the recording sheet 31 receives from the inclined contact surface 270 is the frictional force between the feeding roller 240 and the recording sheet 31, that is, the feeding roller 240 presses the recording sheet 31 against the inclined contact surface 270. Before the force becomes larger than the force, the leading edge of the recording paper 31 comes into contact with the outer peripheral surface of the auxiliary feeding roller 275 disposed above the inclined contact surface 270.

  The feed auxiliary roller 275 is arranged over the entire width direction of the medium support portion 210 so as to be rotatable as described above. Therefore, even if the recording paper 31 further moves above the inclined contact surface 270 after the leading edge of the recording paper 31 comes into contact with the outer peripheral surface of the feeding auxiliary roller 275, the feeding auxiliary roller 275 on the recording paper 31. The portion that comes into contact with the outer peripheral surface of the roller moves as the feeding auxiliary roller 275 rotates. Therefore, after the leading edge of the recording paper 31 comes into contact with the outer peripheral surface of the auxiliary feeding roller 275, the frictional force that the recording paper 31 receives from the inclined contact surface 270 does not further increase. The recording paper 31 is fed in the direction of the conveyance path 35 via the feeding auxiliary roller 275 by continuing to receive the pressing force from the rotating feeding roller 240 against the inclined contact surface 270.

  When the recording paper 30 is pressed against the inclined contact surface 270 by the feeding roller 240 as described above, the recording paper 30 lower than the recording paper 31 in the recording paper 30, that is, the feeding roller 240. The recording paper 30 that does not directly contact with the recording paper 31 may be pulled by the movement of the uppermost recording paper 31, and the leading end of the recording paper 30 may be bent and move above the inclined contact surface 270. However, the angle and the dynamic friction coefficient of the inclined contact surface 270 are set so that the frictional force that the leading edge of the lower recording sheet 30 receives from the inclined contact surface 270 is larger than the frictional force between the recording sheets 30. Thus, the lower recording paper 30 does not get over the inclined contact surface 270. Therefore, even when the lower recording paper 30 is pressed against the inclined contact surface 270 by the feeding roller 240, the lower recording sheet 30 does not move to the outer peripheral surface of the auxiliary feeding roller 275. Basically, the lower recording paper 30 is friction with the recording paper 31 on the upper surface and the recording paper 30 on the lower surface, so the friction coefficient is the same or the dynamic friction coefficient is compared with the static friction coefficient. In general, the lower recording sheet 30 should not be pulled by the uppermost recording sheet 31 because it tends to be low, but the problem here is that a factor that increases some friction coefficient, such as a scratch This is the case when the paper is soiled.

  As described above, when the feeding roller 240 presses the recording paper 30 against the inclined contact surface 270, only the uppermost sheet of the recording paper 30 moves above the inclined contact surface 270 and feeds it. The paper is fed in the direction of the conveyance path 35 through the auxiliary feeding roller 275. Therefore, in the feeding device 200 according to the present embodiment, it is possible to prevent a plurality of recording sheets 30 from being simultaneously fed to the transport path 35 at the same time.

  Further, in the feeding device 200 of the present embodiment, the inclined contact surface 270 is fixed to the medium support unit 210. Therefore, when, for example, a thick paper that is not easily bent is used as the recording paper 30, the angle of the inclined contact surface 270 with respect to the medium support portion 210 changes even when the thick paper is pressed against the inclined contact surface 270 by the feeding roller 240. Hateful. Therefore, in the feeding device 200 according to the present embodiment, it is possible to more reliably prevent a plurality of recording sheets 30 from being simultaneously fed to the conveyance path 35 at the same time.

  The recording paper 31 is smoothly transported by the rotation of the auxiliary feeding roller 275 in the portion of the auxiliary feeding roller 275 by the rotatable auxiliary feeding roller 275 disposed at the upper end of the inclined contact surface 270. It is fed in the direction of 35. Therefore, the friction coefficient at the upper end of the inclined contact surface 270 is substantially smaller than the friction coefficient of the inclined contact surface 270. Thereby, it is possible to further reduce the back tension generated with respect to the recording paper 31 fed in the direction of the transport path 35 through the feeding auxiliary roller 275.

  The recording paper 31 fed by the feeding device 200 in the direction of the transport path 35 from the medium support portion 210 through the inclined contact surface 270 and the feeding auxiliary roller 275 is driven to rotate as shown in FIG. It is sandwiched between the transport driving roller 152 and the transport driven roller 153 and transported onto the platen 130. Further, the recording sheet 31 conveyed on the platen 130 is further conveyed by the conveyance driving roller 152 and the conveyance driven roller 153, and the leading end thereof is sandwiched between the discharge driving roller 162 and the discharge driven roller 163.

  In this state, the carriage motor 145 drives the pulley 143 to rotate, so that the carriage 120 that holds the timing belt 144 reciprocates on the recording paper 31 in the horizontal direction perpendicular to the conveyance path 35. At this time, the recording head 122 disposed on the surface of the carriage 120 facing the platen 130 ejects the ink supplied from the ink tank downward, thereby causing the ink to adhere to the recording paper 31 for recording. . The discharge driving roller 162 and the discharge driven roller 163 sequentially transport the recording paper 31 in the direction of the transport path 35 in conjunction with the recording operation to the transport driving roller 152 and the transport driven roller 153. The recording sheet 31 on which recording has been performed is transported along the transport path 35 by the discharge drive roller 162 and the discharge driven roller 163 and discharged to the outside of the frame 110.

  FIG. 4 is a schematic diagram enlarging the vicinity of the frame connecting portion 230 in another form of the feeding device 200. In the feeding device 200 shown in FIG. 4, the same reference numerals are assigned to the same components as those in the feeding device 200 described with reference to FIGS. 1 to 3, and description thereof is omitted. In the feeding device 200 shown in FIG. 4, the end of the medium support portion 210 on the frame connecting portion 230 side protrudes over the entire width direction of the medium support portion 210 in the same manner as the feeding device 200 in FIG. 3. A feeding auxiliary roller 276 is rotatably disposed over the entire width direction of the medium support unit 210 at an upper portion of the inclined contact surface 270 in the portion. Also, the auxiliary feeding roller 276 has a smaller diameter than the auxiliary feeding roller 275 in the feeding device 200 of FIG. 3, and a plurality of the auxiliary feeding rollers 276 are arranged along the inclined contact surface 270 above the inclined contact surface 270. .

  In this way, by providing a plurality of feed assist rollers 276 having a smaller diameter than the feed assist roller 275 along the inclined contact surface 270 above the tilt contact surface 270, the feed device 200 of FIG. In addition, the space in the vicinity of the protruding portion of the medium support portion 210 can be reduced in size as compared with the feeding device 200 of FIG. 3 in which the auxiliary feeding roller 275 is provided. .

  FIG. 5 is an enlarged schematic view of the vicinity of the frame connecting unit 230 in still another embodiment of the feeding device 200. In the feeding device 200 shown in FIG. 5, the same reference numerals are given to the same components as those in the feeding device 200 of FIGS. 1 to 3, and description thereof is omitted. In the feeding device 200 shown in FIG. 5, the end portion on the frame connecting portion 230 side of the medium support portion 210 protrudes over the entire width direction of the medium support portion 210 in the same manner as the feeding device 200 in FIG. 3. In addition, the surface on the medium support unit 210 side in the protruding portion is an inclined contact surface 272 that is inclined with respect to the horizontal direction when the feeding device 200 is mounted on the frame 110. The inclined contact surface 272 is a smooth inclined surface 274 having a low friction coefficient on the upper side, and a non-smooth inclined surface 273 having a large friction coefficient is provided between the smooth inclined surface 274 and the upper surface of the support plate 210. It has become.

  When the feeding roller 240 rotates in the direction indicated by the arrow in FIG. 5 and presses the recording paper 30 against the inclined contact surface 272, the uppermost sheet of the pressed recording paper 30, that is, the feeding roller 240 The recording sheet 31 that is in direct contact with the recording sheet 31 moves to the smooth inclined surface 274 above the inclined contact surface 272 while the leading end of the recording sheet 31 is bent, and the leading end contacts the smooth inclined surface 274. Here, since the friction coefficient of the smooth inclined surface 274 is low as described above, the frictional force generated between the recording paper 31 and the smooth inclined surface 274 is small. Therefore, the recording paper 31 smoothly moves in the direction of the transport path 35 by continuing to receive the pressing force from the rotating feed roller 240 against the inclined contact surface 272 even after the leading end contacts the smooth inclined surface 274. Be fed.

  Note that, when the recording paper 30 is pressed against the non-smooth inclined surface 273 of the inclined contact surface 272 by the feeding roller 240 as described above, the recording paper 30 lower than the recording paper 31 in the recording paper 30. That is, it is conceivable that the recording paper 30 that does not directly contact the feeding roller 240 moves to the smooth inclined surface 274 due to its leading end being bent. However, the angle of the inclined contact surface 270 and the dynamic friction coefficient are set so that the frictional force that the leading edge of the lower recording paper 30 receives from the non-smooth inclined surface 273 is larger than the frictional force between the recording papers 30. Thus, the leading edge of the lower recording paper 30 does not move to the smooth inclined surface 274. Therefore, the lower recording sheet 30 is pressed against the non-smooth inclined surface 273 of the inclined contact surface 272 by the rotation of the feeding roller 240, and thus, the lower recording sheet 30 exceeds the inclined contact surface 272 together with the uppermost recording sheet 31. It is never sent.

  In this way, when the feeding roller 240 presses the recording paper 30 against the inclined contact surface 272, only the uppermost sheet of the recording paper 30 moves above the inclined contact surface 272 and feeds it. The paper is fed in the direction of the conveyance path 35 through the auxiliary feeding roller 275. Therefore, in the feeding device 200 according to the present embodiment, it is possible to prevent a plurality of recording sheets 30 from being simultaneously fed to the transport path 35 at the same time. An example of the non-smooth inclined surface 273 is a flat surface with fine irregularities or grooves such as embossing.

  FIG. 6 is an enlarged schematic view of the vicinity of the frame connecting portion 230 in still another embodiment of the feeding device 200. In the feeding device 200 illustrated in FIG. 6, the same reference numerals are assigned to the same components as those of the feeding device 200 described with reference to FIGS. 1 to 3, and description thereof is omitted. In the feeding device 200 shown in FIG. 6, the end portion on the frame connecting portion 230 side of the medium support portion 210 protrudes over the entire width direction of the medium support portion 210 similarly to the feeding device 200 in FIGS. 3 and 5.

  Further, the surface on the medium support portion 210 side in the protruding portion is an inclined contact surface 271 that is inclined with respect to the horizontal direction in a state where the feeding device 200 is mounted on the frame 110. As shown in FIG. 6, when the recording paper 30 is stacked and loaded on the upper surface of the medium support unit 210, the leading end of the recording paper 30 comes into contact with the inclined contact surface 271. Further, as shown in FIG. 6, the inclined contact surface 271 is a curved surface whose inclination becomes gentler toward the upper side, and the uppermost portion has substantially the same inclination as the surface on which the recording paper 30 is loaded in the medium support unit 210. Become.

  Since the feeding device 200 has such an inclined contact surface 271, the recording sheet 31 has a large contact angle with the inclined contact surface 271 when the leading end is located below the inclined contact surface 271. On the other hand, in the vicinity of the uppermost portion of the inclined contact surface 271, the contact angle becomes almost 0, and the sheet is smoothly fed in the direction of the transport path 35. Therefore, the magnitude of the force by which the recording paper 31 pushes the inclined contact surface 271 in the vicinity of the uppermost portion of the inclined contact surface 271 is the force of the recording paper 31 pushing the inclined contact surface 271 below the inclined contact surface 271. Smaller than size. Therefore, the frictional force acting on the recording paper 31 in the vicinity of the uppermost portion of the inclined contact surface 271 is smaller than the frictional force acting on the recording paper 31 below the inclined contact surface 271. As a result, the back tension generated on the recording paper 31 fed in the direction of the transport path 35 via the inclined contact surface 271 can be further reduced.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

1 is an overall perspective view showing an internal mechanism of an ink jet recording apparatus 10 exposed. 1 is a schematic side view of an ink jet recording apparatus 10. FIG. 4 is an enlarged schematic view of the vicinity of a frame connecting portion 230 of the feeding device 200. It is the schematic which expanded the frame connection part 230 vicinity about the other form of the feeder 200. FIG. It is the schematic which expanded the frame connection part 230 vicinity about the further another form of the feeder 200. FIG. It is the schematic which expanded the frame connection part 230 vicinity about the further another form of the feeder 200. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Inkjet recording device 30, 31 Recording paper, 35 Conveyance path, 110 Frame, 112 Guide rail, 120 Carriage, 122 Recording head, 130 Platen, 140 Flexible tube, 143 Pulley, 144 Timing belt, 145 Carriage motor, 146 Cap 148 Pump motor, 150 Conveyance drive gear, 152 Conveyance drive roller, 153 Conveyance driven roller, 160 Discharge drive gear, 162 Discharge drive roller, 163 Discharge driven roller, 200 Feeding device, 210 Medium support unit, 222 Side support, 224 Slide Support, 230 frame connecting portion, 240 feeding roller, 242 feeding shaft, 250 bearing portion, 260 urging plate, 262 urging plate rotating shaft, 270, 271, 272 inclined contact surface, 73 non-smooth inclined surface, 274 smooth inclined surfaces, 275 and 276 feed auxiliary roller

Claims (7)

A medium support part for supporting a sheet-like medium;
An inclined contact surface having an inclination with respect to a horizontal direction, with which a tip of a medium supported by the medium support portion comes into contact;
Feeding the medium over the inclined contact surface by rotating while contacting the uppermost medium among the media supported by the medium support part and arranged above the medium support part. And a feeding roller that
A feeding device in which a friction coefficient at an upper end of the inclined contact surface is smaller than a friction coefficient below the upper end of the inclined contact surface.   The feeding device according to claim 1, wherein the inclined contact surface is fixed to the medium support portion.   The feeding device according to claim 1, wherein the inclined contact surface has a feeding auxiliary roller that is rotatable at the upper end.   The feeding device according to claim 1, wherein the inclined contact surface has a texture at the lower portion, and the upper end is smooth.   The feeding device according to claim 1, wherein the inclined contact surface has a curved surface inclined more horizontally as it goes from the lower portion toward the upper end. A medium support part for supporting a sheet-like medium;
An inclined contact surface that has an inclination with respect to the horizontal direction and contacts the tip of the medium supported by the medium support portion; and
When a plurality of media are supported on the medium support unit and arranged above the medium support unit, by rotating while abutting on the topmost medium among the plurality of media, A feeding device that feeds the medium across the inclined contact surface, and feeds the medium one by one;
A recording head for discharging ink to the medium;
A conveyance driving roller that rotates when a rotational driving force is applied, and conveys the medium to a position facing the recording head;
A recording apparatus comprising: A sheet-like medium is supported on a medium support portion, and rotated while being in contact with the uppermost medium among the media supported on the medium support portion by a feeding roller disposed above the medium support portion. And a contact member that is disposed in a feeding device that feeds the medium and has an inclined contact surface that has an inclination with respect to a horizontal direction and that contacts an end of the medium supported by the medium support portion. Because
A contact member having a friction coefficient at an upper end of the inclined contact surface that is smaller than a friction coefficient below the upper end of the inclined contact surface.

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