WO2021065709A1 - Paper feeding unit - Google Patents

Paper feeding unit Download PDF

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Publication number
WO2021065709A1
WO2021065709A1 PCT/JP2020/036239 JP2020036239W WO2021065709A1 WO 2021065709 A1 WO2021065709 A1 WO 2021065709A1 JP 2020036239 W JP2020036239 W JP 2020036239W WO 2021065709 A1 WO2021065709 A1 WO 2021065709A1
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WO
WIPO (PCT)
Prior art keywords
paper feed
feed tray
housing
medium
tray
Prior art date
Application number
PCT/JP2020/036239
Other languages
French (fr)
Japanese (ja)
Inventor
匡雄 三本
Original Assignee
ブラザー工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ブラザー工業株式会社 filed Critical ブラザー工業株式会社
Publication of WO2021065709A1 publication Critical patent/WO2021065709A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H16/00—Unwinding, paying-out webs
    • B65H16/02—Supporting web roll
    • B65H16/08—Supporting web roll parallel rollers type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/12—Lifting, transporting, or inserting the web roll; Removing empty core

Definitions

  • the present invention relates to a paper feed unit in which a paper feed tray capable of accommodating a medium is detachably provided in a housing.
  • Patent Document 1 describes two paper feed trays that are freely retractably attached to the main body of an image processing apparatus and can accommodate a wound body of a medium wound in a roll shape. These paper feed trays are arranged in two stages, upper and lower, and respectively, a paper feed roller for transporting the medium unwound from the winding body, a paper feed passage for guiding the medium transported by the paper feed roller, and a feed tray. A cutter capable of cutting the medium passing through the paper passage is provided.
  • the paper feed tray described in Patent Document 1 is provided with a cutter in addition to the feeding roller, the paper feed tray itself has a complicated structure. Therefore, the present inventor has, for example, a housing for mounting a paper feed tray provided in the main body of the image processing device or an additional housing that can be attached to and detached from the main body of the device for mounting the paper feed tray.
  • a housing for mounting a paper feed tray provided in the main body of the image processing device or an additional housing that can be attached to and detached from the main body of the device for mounting the paper feed tray.
  • the tip of the medium cut by the cutting mechanism is placed at a position protruding above the paper feed tray.
  • the tip of the medium is provided in the housing (for example, a paper feed roller or the like). ), And the medium may bend. If the medium is bent due to the attachment / detachment operation of the paper feed tray in this way, there is a problem that paper feed failure occurs after mounting.
  • An object of the present invention is to provide a paper feed unit capable of suppressing the occurrence of poor paper feed due to the operation of attaching and detaching the paper feed tray to and from the housing.
  • the paper feed unit of the present invention includes a paper feed tray that can rotatably accommodate a wound body in which a medium is wound in a roll shape, and a housing that detachably supports the paper feed tray.
  • the medium unwound from the winding body in conjunction with the operation of moving the paper feed tray in a direction orthogonal to the rotation axis of the winding body and removing the paper feed tray from the housing.
  • the paper feed unit of the present invention when the paper feed tray is removed from the housing, the medium unwound from the winding body is sent toward the winding body, and the tip of the medium is pulled back into the paper feed tray. .. Therefore, when the paper feed tray is reattached to the housing, the tip of the medium is less likely to come into contact with the housing or the like, and is less likely to bend. Therefore, it is possible to suppress the occurrence of poor paper feed due to the operation of attaching and detaching the paper feed tray to and from the housing.
  • FIG. 1 is a plan view of the paper feed unit shown in FIG. 1 in a state in which a medium is not accommodated. It is a top view of the main part of the rotation mechanism and its surroundings.
  • the printer 1 in which the paper feed unit 3 according to the embodiment of the present invention is adopted will be described.
  • the printer 1 is installed and used in the state shown in FIG.
  • the three directions indicated by arrows in FIG. 1 are the vertical direction A1, the front-rear direction A2, and the left-right direction A3.
  • the three directions shown in FIG. 1 are the same in the other drawings.
  • the printer 1 is formed in a substantially rectangular parallelepiped shape, and has a printer main body 2 and an additional paper feed unit 3 mounted on the lower part of the printer main body 2.
  • the printer main body 2 has a housing 11.
  • An opening 12 is formed at substantially the center of the front wall 11a of the housing 11.
  • the first paper feed tray 15 and the paper output tray 16 are provided in two upper and lower stages.
  • the first paper feed tray 15 is configured to be removable from the opening 12 in the front-rear direction A2, that is, to be detachable from the housing 11.
  • the cut sheet P1 of a desired size (for example, A4 size) is placed on the first paper feed tray 15.
  • the printer main body 2 can be connected to an external device such as a personal computer (hereinafter referred to as a PC). Then, the recording operation is executed based on the recording command from the PC. In addition, various functions are also executed by the operation of operation buttons by the user.
  • a PC personal computer
  • the front wall 11a of the housing 11 has an opening / closing cover 4 on the right side thereof.
  • the opening / closing cover 4 is configured to be rotatable around the rotation axis (not shown) along the left-right direction A3 at the lower end portion thereof.
  • the printer main body 2 includes a first feeding unit 20, a transport roller pair 35, a recording unit 40, a tank unit 18, a paper ejection roller pair 36, and a first ASF (Auto). It includes a Sheet Feed) motor 20M (see FIG. 4), an LF (Line Feed) motor 35M (see FIG. 4), and a control unit 5 (see FIG. 4).
  • the first feeding unit 20 feeds the paper P1 placed on the first paper feed tray 15 to the transport path 25.
  • the transport roller pair 35 conveys the paper P1 fed by the first feeding unit 20 and the medium P2 fed from the paper feed unit 3 via the branch path 25a to the recording unit 40.
  • the recording unit 40 has, for example, an inkjet recording system, and records an image on the paper P1 and the medium P2 conveyed by the transfer roller pair 35.
  • the paper ejection roller pair 36 ejects the paper P1 and the medium P2 recorded by the recording unit 40 to the paper ejection tray 16.
  • the tank unit 18 has four tanks 18a to 18d. These four tanks 18a to 18d are provided on the downstream side of the printer main body 2 in the transport direction and on the right side portion in FIG. 3, and are arranged side by side in the left-right direction (scanning direction) A3. Black, yellow, cyan, and magenta inks are stored in the four tanks 18a to 18d in order from the one located on the right side. That is, black ink is stored in the rightmost tank 18a, and color ink is stored in the other three tanks 18b to 18d. Then, the inks of these four colors stored in the four tanks 18a to 18d are supplied to the inkjet head 41 (described later) via four tubes or the like (not shown).
  • the first feeding unit 20 is provided on the upper side of the first paper feed tray 15.
  • the first feeding unit 20 has a first paper feed roller 21 and a first arm 22.
  • the first paper feed roller 21 is pivotally supported at the tip of the first arm 22.
  • the first arm 22 is rotatably supported by the support shaft 22a and is urged by a spring or the like so that the first paper feed roller 21 is rotated downward so as to come into contact with the first paper feed tray 15. .
  • the first arm 22 is configured to be retractable upward when the first paper feed tray 15 is attached / detached.
  • the first paper feed roller 21 rotates by transmitting the power of the first ASF motor 20M via a transmission mechanism (not shown), and the paper P1 loaded in the first paper feed tray 15 is supplied to the transport path 25. Will be sent.
  • the first paper feed tray 15 has an inclined wall portion 15a.
  • the inclined wall portion 15a guides the paper P1 to the transport path 25 when the paper P1 placed on the first paper feed tray 15 is fed by the first paper feed roller 21.
  • the transport path 25 is configured in the housing 11, and as shown in FIG. 2, is bent upward from the rear end of the first paper feed tray 15 and toward the front side of the printer 1.
  • the paper P1 fed from the first paper feed tray 15 is guided by the transport path 25 to make a U-turn from the bottom to the top and reaches the recording unit 40.
  • a branch path 25a is connected to the transport path 25.
  • the branch path 25a is also configured in the housing 11, extends in the vertical direction A1 behind the first paper feed tray 15, and is connected to the transport path 25.
  • the medium P2 fed from the paper feed unit 3 is guided from the branch path 25a to the transfer path 25, and is guided from the lower side to the front by the transfer path 25 to reach the recording unit 40.
  • the transport roller pair 35 has a transport roller 35a arranged on the lower side and a pinch roller 35b arranged on the upper side.
  • the transfer roller 35a rotates by transmitting the power of the LF motor 35M via a transmission mechanism (not shown).
  • the pinch roller 35b rotates with the rotation of the transport roller 35a.
  • the transport roller 35a and the pinch roller 35b cooperate with each other to sandwich the paper P1 and the medium P2 from the vertical direction A1 and transport the paper P1 and the medium P2 to the recording unit 40.
  • the paper ejection roller pair 36 has a paper ejection roller 36a arranged on the lower side and a spur roller 36b arranged on the upper side.
  • the paper ejection roller 36a rotates by transmitting the power of the LF motor 35M via a transmission mechanism (not shown).
  • the spur roller 36b rotates with the rotation of the paper ejection roller 36a.
  • the paper ejection roller 36a and the spur roller 36b cooperate with each other to sandwich the paper P1 and the medium P2 from the vertical direction A1 and convey the paper P1 and the medium P2 to the paper ejection tray 16.
  • the recording unit 40 includes an inkjet head 41, a head moving mechanism 50, and a platen 6.
  • the head moving mechanism 50 includes a carriage 51.
  • the carriage 51 reciprocates in the scanning direction (the left-right direction A3, which is orthogonal to the transport direction of the paper P1 and the medium P2).
  • the inkjet head 41 is supported by the carriage 51.
  • the lower surface of the inkjet head 41 is an ejection surface 41b formed with a plurality of ejection ports 41a for ejecting ink to the paper P1 and the medium P2 conveyed below the inkjet head 41.
  • the plurality of discharge ports 41a are arranged so that four discharge port rows arranged along the transport direction are formed in the scanning direction.
  • black ink is discharged from the discharge port 41a belonging to the rightmost discharge port row in FIG. 3
  • color ink (magenta, cyan) is discharged from the discharge port 41a belonging to the other three rows of discharge port rows.
  • Yellow is discharged.
  • the inkjet head 41 ejects ink of each color as minute ink droplets from the ejection port 41a under the control of the control unit 5 based on the recording command.
  • the inkjet head 41 is integrally provided with a tube joint 44. Then, the inkjet head 41 and the tank unit 18 are connected via four flexible tubes (not shown) connected to the tube joint 44, and ink of each color is supplied to the inkjet head 41.
  • a platen 6 that supports the paper P1 and the medium P2 conveyed by the transfer roller pair 35 is arranged below the inkjet head 41.
  • the platen 6 is arranged in a portion of the reciprocating movement range of the carriage 51 through which the paper P1 and the medium P2 pass. Since the width of the platen 6 is sufficiently larger than the maximum width of the paper P1 and the medium P2 that can be conveyed, the paper P1 and the medium P2 conveyed through the transport path 25 always pass on the platen 6.
  • the head moving mechanism 50 includes a pair of guide rails 52 and a belt transmission mechanism 53.
  • the pair of guide rails 52 are arranged apart from each other in the front-rear direction A2 and extend parallel to each other in the left-right direction A3.
  • the carriage 51 is arranged so as to straddle the pair of guide rails 52, and is reciprocated on the pair of guide rails 52 along the left-right direction A3.
  • the belt transmission mechanism 53 includes two pulleys 54 and 55, an endless timing belt 56 partially fixed to the carriage 51, and a carriage motor 50M.
  • the two pulleys 54 and 55 are arranged apart from each other in the left-right direction A3, and the timing belt 56 is bridged.
  • the pulley 54 is connected to the drive shaft of the carriage motor 50M, and when the carriage motor 50M is driven, the timing belt 56 travels and the inkjet head 41 moves in the scanning direction together with the carriage 51.
  • the inkjet head 41 ejects ink of each color from the ejection port 41a under the control of the control unit 5 based on the recording command. That is, when the carriage 51 reciprocates in the left-right direction A3, the inkjet head 41 is scanned against the paper P1 and the medium P2, and ink of each color is ejected from the ejection port 41a to move on the platen 6. An image is recorded on the conveyed paper P1 and medium P2.
  • a linear encoder (not shown) having a large number of translucent portions (slits) arranged at intervals in the scanning direction is provided in the printer 1.
  • the carriage 51 is provided with a transmission type position detection sensor (not shown) having a light emitting element and a light receiving element. Then, the printer 1 can recognize the current position of the carriage 51 with respect to the scanning direction from the count value of the translucent portion of the linear encoder detected by the position detection sensor while the carriage 51 is moving. Rotational drive is controlled.
  • the control unit 5 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), an ASIC (Application Specific Integrated Circuit), and the like, and these cooperate with each other.
  • 1st ASF motor 20M, 2nd ASF motor 80M (described later), LF motor 35M, carriage motor 50M, inkjet head 41, cutting motor 90M (described later) and the like are controlled.
  • the control unit 5 controls the inkjet head 41, the first ASF motor 20M, the LF motor 35M, the carriage motor 50M, and the like based on the recording command transmitted from the PC, and causes the paper P1 to record an image or the like.
  • control unit 5 controls the inkjet head 41, the second ASF motor 80M, the LF motor 35M, the carriage motor 50M, the cutting motor 90M, etc. based on the recording command transmitted from the PC, and displays an image or the like on the medium P2. To record.
  • the control unit 5 of the present embodiment has one CPU and one ASIC, but the control unit 5 includes only one ASIC, and the one ASIC collectively performs necessary processing. Or, a plurality of ASICs may be included, and the plurality of ASICs may share the necessary processing.
  • the paper feed unit 3 is disconnected from the housing 60, the second paper feed tray 61, the return feed mechanism 70, and the second feed unit 80. Includes mechanism 90.
  • the paper feed unit 3 can rotatably accommodate the winding body P2a described later.
  • the housing 60 has a rectangular parallelepiped shape, and is configured to be removable from the lower part of the printer main body 2.
  • An opening 60b is formed at substantially the center of the front wall 60a of the housing 60.
  • the housing 60 supports the second paper feed tray 61.
  • the second paper feed tray 61 is configured to be removable from the opening 60b in the front-rear direction A2 (orthogonal direction), that is, to be detachable from the housing 60.
  • the second paper feed tray 61 has a tray main body 61a, a support base 61b for supporting the winding body P2a of the medium P2, and a guide member 61d.
  • the support base 61b and the guide member 61d are detachably provided with respect to the tray body 61a.
  • the tray body 61a has a rectangular planar shape.
  • the tray body 61a has a flat surface size capable of accommodating, for example, A4 size cut sheet paper in a state where the support base 61b and the guide member 61d are removed. Further, as shown in FIG.
  • the tray body 61a has a slanted wall portion 61a1 at the rear end portion.
  • the inclined wall portion 61a1 guides the medium P2 fed by the second paper feed roller 81 toward the branch path 25a.
  • the medium P2 is paper like the paper P1, but may be cloth or the like.
  • the guide member 61d is arranged between the rear end portion of the tray body 61a and the support base 61b, and the tray body 61a of the medium P2 unwound from the winding body P2a. It is a plate-shaped member for suppressing the floating from the bottom portion 61a2 (bottom surface) of the.
  • the guide member 61d has a long substantially rectangular planar shape in the left-right direction A3, a notch portion 61d1 is formed in the rear center, and a notch portion 61d2 is formed in the front.
  • the cutout portion 61d1 is formed so that the tip portions of the second paper feed roller 81 and the second arm 82, which will be described later, can be moved in and out by the rotation of the second arm 82.
  • a roller 72 which will be described later, is arranged in the cutout portion 61d2.
  • the support base 61b is arranged between the center and the front end of the tray main body 61a in the front-rear direction A2.
  • the support base 61b has a base body 62 having a substantially rectangular parallelepiped shape that is long in the left-right direction A3, and a plurality of rollers 63a to 63c.
  • the base body 62 is formed with two inclined surfaces 62a and 62b on the upper surface thereof with the center of the front-rear direction A2 interposed therebetween. Of the two inclined surfaces 62a and 62b, the inclined surface 62a is arranged in the front and the inclined surface 62b is arranged in the rear.
  • These two inclined surfaces 62a and 62b are configured to incline downward as they approach each other.
  • Eight rollers 63a are arranged at the rear end of the inclined surface 62a along the left-right direction A3.
  • Eight rollers 63b are arranged at the front end of the slope 62b along the left-right direction A3.
  • Eight rollers 63c are arranged at the rear end of the slope 62b along the left-right direction A3.
  • the plurality of rollers 63a and 63b come into contact with the lower portion of the outer peripheral surface P2a1 of the winding body P2a of the medium P2, and support the winding body P2a from below.
  • the plurality of rollers 63c guide the medium P2 unwound from the winding body P2a.
  • the base body 62 is formed with a groove 62c that opens upward. As shown in FIG. 6, the groove 62c is arranged at the center of the base body 62 in the front-rear direction A2 and between the two inclined surfaces 62a and 62b.
  • the return feed mechanism 70 is linked to the operation of moving the second paper feed tray 61 forward from the fully mounted state in which the second paper feed tray 61 is completely mounted on the housing 60 and removing the second paper feed tray 61 from the housing 60.
  • the return feed mechanism 70 has a pair of rollers 71 and 72 capable of sandwiching the medium P2 unwound from the winding body P2a, and a rotation mechanism 73 for rotating the rollers 71.
  • the pair of rollers 71 and 72 are arranged between the tip end portion (rear end portion in FIG.
  • one roller 71 of the pair of rollers 71 and 72 extends long in the left-right direction A3, and both ends thereof are the left and right side walls of the tray body 61a. It is rotatably supported.
  • the other roller 72 has a diameter larger than that of the roller 71 and is arranged so as to be in contact with the roller 71 from above. Further, as shown in FIG.
  • the roller 72 extends long in the left-right direction A3, is arranged in the cutout portion 61d2 of the guide member 61d, and both ends thereof are rotatably supported by the guide member 61d. ing. That is, the roller 72 is rotatably supported by the end portion (front end portion in FIG. 5) of the guide member 61d farthest from the tip end portion (rear end portion in FIG. 5) of the second paper feed tray 61. Further, the guide member 61d is arranged between the tip end portion (rear end portion in FIG. 5) of the second paper feed tray 61 and the return feed mechanism 70.
  • the medium P2 unwound from the winding body P2a can be sandwiched between the pair of rollers 71 and 72, the medium P2 unwound from the winding body P2a set on the support base 61b is paired.
  • the desired position referred to here is, for example, a position where the second paper feed tray 61 can be in contact with the second paper feed roller 81 when the second paper feed tray 61 is completely mounted on the housing 60, or near the rear end in FIG. 5 of the tray body 61a. is there.
  • the rotation mechanism 73 includes a power transmission unit 74, a pinion gear 75, and a rack gear 76.
  • the power transmission unit 74 and the pinion gear 75 are arranged side by side in the left-right direction A3 in a state of being connected to each other.
  • the power transmission unit 74 is a known one-way clutch, which is connected to the left end portion of the roller 71 and transmits the rotational force in one direction of the pinion gear 75 to the roller 71.
  • the power transmission unit 74 in the present embodiment transmits the rotational force when the pinion gear 75 rotates counterclockwise to the roller 71, and does not transmit the rotational force when the pinion gear 75 rotates clockwise to the roller 71. It is configured in.
  • the pinion gear 75 is configured to be rotatable by meshing with the rack gear 76. Further, the power transmission unit 74 and the pinion gear 75 are arranged on the left side of the tray main body 61a.
  • the rack gear 76 is arranged in the groove portion 60d of the housing 60. As shown in FIGS. 1 and 7, the groove portion 60d is formed at the lower end portion of the left side wall of the opening 60d from the front end to the center in the front-rear direction A2. The rack gear 76 is formed so as to extend in the front-rear direction A2. Further, the groove portion 60d is configured so that the power transmission portion 74 and the pinion gear 75 can be arranged when the second paper feed tray 61 is mounted on the housing 60. As shown in FIG. 7, when the second paper feed tray 61 is fully mounted on the housing 60, the rack gear 76 is located at a position where its rear end does not mesh with the pinion gear 75 and is in front of the pinion gear 75. Located in.
  • the power of the second ASF motor 80M is transmitted to the second paper feed roller 81 via a transmission mechanism (not shown) to rotate the second paper feed roller 81, and the second paper feed roller 81 is unwound from the winding body P2a housed in the second paper feed tray 61.
  • the medium P2 is fed to the branch path 25a via the cutting mechanism 90.
  • the tip of the medium P2 is closer to the upper end of the tip end portion (rear end portion in FIG. 5) of the second paper feed tray 61. It is configured to return the medium P2 so that it is placed below. As a result, when the second paper feed tray 61 is reattached to the housing 60, the tip of the medium P2 is less likely to come into contact with the housing 60 or the like.
  • the support base 61b has a plurality of rollers 63a and 63b.
  • the winding body P2a of the medium P2 can be rotatably supported from below by the plurality of rollers 63a and 63b of the support base 61b.
  • the present invention is not limited to the above-described embodiment, and various modifications can be made as long as it is described in the claims.
  • the above-mentioned paper feed unit 3 is an extension unit that can be attached to and detached from the printer main body 2, but may be integrally fixed to the printer main body 2.
  • a mechanism similar to the return feed mechanism 70 may be provided in the housing 11 and the first paper feed tray 15 of the printer main body 2, and the paper feed unit may be provided in the printer main body 2 itself. Also in this case, the same effect as that of the above-described embodiment can be obtained.
  • the guide member 61d may not be provided. Further, the roller 72 does not have to be supported by the guide member 61d. That is, the roller 72 may be rotatably supported by the tray body 61a.
  • the return feed mechanism 70 can feed the medium P2 unwound from the winding body P2a toward the winding body P2a, if possible, the medium P2.
  • the tip of the second paper feed tray 61 may be arranged slightly above the upper end of the tip end portion (rear end portion in FIG. 5) when the second paper feed tray 61 is mounted on the housing 60. Also in this case, when the second paper feed tray 61 is reattached to the housing 60, the tip of the medium P2 is less likely to come into contact with the housing 60 or the like, and is less likely to be bent.
  • the present invention is not limited to this. It can be applied to the entire paper feed unit capable of rotatably accommodating the wound body P2a of the medium P2.
  • Paper feed unit 60 Housing 61 Second paper feed tray (paper feed tray) 61a Tray body 61b Support base 61d Guide members 63a, 63b Roller 70 Return feed mechanism 71 Roller (one roller) 72 roller (the other roller) 73 Rotation mechanism 74 Power transmission part 75 Pinion gear 76 Rack gear

Abstract

The present invention suppresses paper medium feeding failures that occur when a paper feeding tray is attached/detached to/from a housing. A paper feeding unit 3 includes: a second paper feeding tray 61 which can accommodate a wound body P2a, which is a medium P2 wound in a roll shape, such that the wound body is rotatable; a housing 60 which supports the second paper feeding tray 61 such that the second paper feeding tray is attachable/detachable; and a return feed mechanism 70. The return feed mechanism 70 feeds the medium P2 which has been unwound from the wound body P2a towards the wound body P2a in tandem with the operation in which the second paper feeding tray 61 is moved forward to detach the second paper feeding tray 61 from the housing 60.

Description

給紙ユニットPaper feed unit
　本発明は、媒体を収容可能な給紙トレイが筐体に着脱可能に設けられた給紙ユニットに関する。 The present invention relates to a paper feed unit in which a paper feed tray capable of accommodating a medium is detachably provided in a housing.
　特許文献１には、画像処理装置の装置本体に引出自在に装着され、ロール状に巻かれた媒体の巻回体を収容可能な２つの給紙トレイについて記載されている。これら給紙トレイは、上下二段に配置されており、それぞれに、巻回体から巻き出された媒体を搬送する送り出しローラと、送り出しローラにより搬送される媒体を案内する給紙通路と、給紙通路を通る媒体を切断可能なカッターとが設けられている。 Patent Document 1 describes two paper feed trays that are freely retractably attached to the main body of an image processing apparatus and can accommodate a wound body of a medium wound in a roll shape. These paper feed trays are arranged in two stages, upper and lower, and respectively, a paper feed roller for transporting the medium unwound from the winding body, a paper feed passage for guiding the medium transported by the paper feed roller, and a feed tray. A cutter capable of cutting the medium passing through the paper passage is provided.
特開平７－１８７４９５号公報Japanese Unexamined Patent Publication No. 7-187495
　上記特許文献１に記載の給紙トレイには、送り出しローラに加えてカッターまで設けられているため、給紙トレイ自体の構成が複雑な構成となる。そこで本発明者は、例えば、画像処理装置の装置本体に設けられた給紙トレイを装着するための筐体又は装置本体に着脱可能な増設用の筐体であって給紙トレイを装着するための筐体側に、送り出しローラやカッターを設けて、給紙トレイ自体の構成を簡略化することを検討したところ、以下の課題を知見した。 Since the paper feed tray described in Patent Document 1 is provided with a cutter in addition to the feeding roller, the paper feed tray itself has a complicated structure. Therefore, the present inventor has, for example, a housing for mounting a paper feed tray provided in the main body of the image processing device or an additional housing that can be attached to and detached from the main body of the device for mounting the paper feed tray. When we examined how to simplify the configuration of the paper feed tray itself by providing a feeding roller and a cutter on the housing side of the paper, we found the following problems.
　筐体側にカッターなどの切断機構を設けた場合、切断機構で切断された媒体の先端は給紙トレイよりも上方に飛び出た位置に配置される。この状態で給紙トレイを移動させて一旦筐体から取り外した後、再度、給紙トレイを筐体に装着した場合、媒体の先端が筐体に設けられた構成要素（例えば、給紙ローラなど）に接触し、媒体が折れ曲がることがある。このように給紙トレイの着脱動作により媒体が折れ曲がると、装着後に給紙不良が発生する問題がある。 When a cutting mechanism such as a cutter is provided on the housing side, the tip of the medium cut by the cutting mechanism is placed at a position protruding above the paper feed tray. When the paper feed tray is moved in this state, removed from the housing, and then reattached to the housing, the tip of the medium is provided in the housing (for example, a paper feed roller or the like). ), And the medium may bend. If the medium is bent due to the attachment / detachment operation of the paper feed tray in this way, there is a problem that paper feed failure occurs after mounting.
　本発明の目的は、筐体に対する給紙トレイの着脱動作により媒体の給紙不良が生じるのを抑制することが可能な給紙ユニットを提供することである。 An object of the present invention is to provide a paper feed unit capable of suppressing the occurrence of poor paper feed due to the operation of attaching and detaching the paper feed tray to and from the housing.
　本発明の給紙ユニットは、媒体がロール状に巻回された巻回体を回転可能に収容可能な給紙トレイと、前記給紙トレイを着脱可能に支持する筐体とを備えた給紙ユニットにおいて、前記巻回体の回転軸心と直交する方向に前記給紙トレイを移動させて前記筐体から前記給紙トレイを取り外す動作に連動して、前記巻回体から巻き出された媒体を前記巻回体に向けて送る戻し送り機構を備えている。 The paper feed unit of the present invention includes a paper feed tray that can rotatably accommodate a wound body in which a medium is wound in a roll shape, and a housing that detachably supports the paper feed tray. In the unit, the medium unwound from the winding body in conjunction with the operation of moving the paper feed tray in a direction orthogonal to the rotation axis of the winding body and removing the paper feed tray from the housing. Is provided with a return feed mechanism for feeding the paper toward the winding body.
　本発明の給紙ユニットによると、筐体から給紙トレイを取り外す際に、巻回体から巻き出された媒体が巻回体に向けて送られ、媒体の先端が給紙トレイ内に引き戻される。このため、給紙トレイを筐体に再度装着するときに、媒体の先端が筐体などに接触しにくくなり、折れ曲がりにくくなる。したがって、筐体に対する給紙トレイの着脱動作により媒体の給紙不良が生じるのを抑制することが可能となる。 According to the paper feed unit of the present invention, when the paper feed tray is removed from the housing, the medium unwound from the winding body is sent toward the winding body, and the tip of the medium is pulled back into the paper feed tray. .. Therefore, when the paper feed tray is reattached to the housing, the tip of the medium is less likely to come into contact with the housing or the like, and is less likely to bend. Therefore, it is possible to suppress the occurrence of poor paper feed due to the operation of attaching and detaching the paper feed tray to and from the housing.
本発明の一実施形態に係る給紙ユニットが採用されたプリンタの斜視図である。It is a perspective view of the printer which adopted the paper feed unit which concerns on one Embodiment of this invention. 図１に示すプリンタの内部構造を示す概略側面図である。It is a schematic side view which shows the internal structure of the printer shown in FIG. 図１に示すプリンタの概略的な平面図である。It is a schematic plan view of the printer shown in FIG. 制御部のブロック図である。It is a block diagram of a control part. 給紙ユニットの内部構造を示し、筐体に対する第２給紙トレイの完全装着状態を示す側面図である。It is a side view which shows the internal structure of the paper feed unit, and shows the state which the 2nd paper feed tray is fully attached to the housing. 図１に示す給紙ユニットであり、媒体が収容されていない状態の平面図である。FIG. 1 is a plan view of the paper feed unit shown in FIG. 1 in a state in which a medium is not accommodated. 回転機構及びその周辺の要部平面図である。It is a top view of the main part of the rotation mechanism and its surroundings. 給紙ユニットの内部構造を示し、筐体に対する第２給紙トレイの半装着状態であってピニオンギヤがラックギヤに噛み合い始めたときの側面図である。It is a side view which shows the internal structure of the paper feed unit, and is the state where the 2nd paper feed tray is half-mounted with respect to the housing, and the pinion gear starts to mesh with a rack gear. 給紙ユニットの内部構造を示し、筐体に対する第２給紙トレイの半装着状態であってピニオンギヤがラックギヤと噛み合っているときの側面図である。It is a side view which shows the internal structure of the paper feed unit, and is the state where the 2nd paper feed tray is half-mounted with respect to the housing, and the pinion gear is meshing with a rack gear. 給紙ユニットの内部構造を示し、筐体に対する第２給紙トレイの半装着状態であってピニオンギヤがラックギヤよりも前方に位置するときの側面図である。It is a side view which shows the internal structure of the paper feed unit, and is the state where the 2nd paper feed tray is half-mounted with respect to the housing, and the pinion gear is positioned in front of the rack gear.
　以下、本発明の一実施形態に係る給紙ユニット３が採用されたプリンタ１について説明する。プリンタ１は、図１に示す状態に設置されて使用される。本実施形態において、図１に矢印を付して示す３つの方向が、上下方向Ａ１、前後方向Ａ２、及び左右方向Ａ３である。図１に示す３つの方向は、他の図面においても同様である。 Hereinafter, the printer 1 in which the paper feed unit 3 according to the embodiment of the present invention is adopted will be described. The printer 1 is installed and used in the state shown in FIG. In the present embodiment, the three directions indicated by arrows in FIG. 1 are the vertical direction A1, the front-rear direction A2, and the left-right direction A3. The three directions shown in FIG. 1 are the same in the other drawings.
＜プリンタ１の概要＞
　図１に示すように、プリンタ１は、概ね直方体に形成されており、プリンタ本体２と、プリンタ本体２の下部に装着された増設用の給紙ユニット３とを有する。プリンタ本体２は、筐体１１を有する。筐体１１の前壁１１ａの略中央には、開口１２が形成されている。第１給紙トレイ１５及び排紙トレイ１６が、上下２段に設けられている。第１給紙トレイ１５は、開口１２から前後方向Ａ２に挿抜可能、すなわち、筐体１１から着脱可能に構成されている。所望のサイズ（例えば、Ａ４サイズ）の単票用紙Ｐ１が第１給紙トレイ１５に載置される。プリンタ本体２は、パーソナルコンピュータ（以下ＰＣと称する）などの外部機器と接続可能である。そして、ＰＣからの記録指令に基づいて記録動作を実行する。また、ユーザによる操作ボタンの操作によっても各種機能を実行する。 <Overview of Printer 1>
As shown in FIG. 1, the printer 1 is formed in a substantially rectangular parallelepiped shape, and has a printer main body 2 and an additional paper feed unit 3 mounted on the lower part of the printer main body 2. The printer main body 2 has a housing 11. An opening 12 is formed at substantially the center of the front wall 11a of the housing 11. The first paper feed tray 15 and the paper output tray 16 are provided in two upper and lower stages. The first paper feed tray 15 is configured to be removable from the opening 12 in the front-rear direction A2, that is, to be detachable from the housing 11. The cut sheet P1 of a desired size (for example, A4 size) is placed on the first paper feed tray 15. The printer main body 2 can be connected to an external device such as a personal computer (hereinafter referred to as a PC). Then, the recording operation is executed based on the recording command from the PC. In addition, various functions are also executed by the operation of operation buttons by the user.
　また、筐体１１の前壁１１ａは、図１に示すように、その右方部分に開閉カバー４を有する。開閉カバー４は、その下端部において、左右方向Ａ３に沿う回転軸心（不図示）を回転中心として回動可能に構成されている。 Further, as shown in FIG. 1, the front wall 11a of the housing 11 has an opening / closing cover 4 on the right side thereof. The opening / closing cover 4 is configured to be rotatable around the rotation axis (not shown) along the left-right direction A3 at the lower end portion thereof.
＜プリンタ本体２の内部構造＞
　次に、プリンタ本体２の内部構造について説明する。図２及び図３に示すように、プリンタ本体２は、第１給送部２０と、搬送ローラ対３５と、記録部４０と、タンクユニット１８と、排紙ローラ対３６と、第１ＡＳＦ（Auto Sheet Feed）モータ２０Ｍ（図４参照）と、ＬＦ（Line Feed）モータ３５Ｍ（図４参照）と、制御部５（図４参照）とを含む。 <Internal structure of printer body 2>
Next, the internal structure of the printer main body 2 will be described. As shown in FIGS. 2 and 3, the printer main body 2 includes a first feeding unit 20, a transport roller pair 35, a recording unit 40, a tank unit 18, a paper ejection roller pair 36, and a first ASF (Auto). It includes a Sheet Feed) motor 20M (see FIG. 4), an LF (Line Feed) motor 35M (see FIG. 4), and a control unit 5 (see FIG. 4).
　第１給送部２０は、第１給紙トレイ１５に載置される用紙Ｐ１を搬送路２５へ給送する。搬送ローラ対３５は、第１給送部２０によって給紙された用紙Ｐ１、及び、給紙ユニット３から分岐路２５ａを介して給紙された媒体Ｐ２を記録部４０に搬送する。記録部４０は、例えば、インクジェット記録方式の構成を有し、搬送ローラ対３５によって搬送された用紙Ｐ１及び媒体Ｐ２に画像を記録する。排紙ローラ対３６は、記録部４０によって記録された用紙Ｐ１及び媒体Ｐ２を排紙トレイ１６に排紙する。 The first feeding unit 20 feeds the paper P1 placed on the first paper feed tray 15 to the transport path 25. The transport roller pair 35 conveys the paper P1 fed by the first feeding unit 20 and the medium P2 fed from the paper feed unit 3 via the branch path 25a to the recording unit 40. The recording unit 40 has, for example, an inkjet recording system, and records an image on the paper P1 and the medium P2 conveyed by the transfer roller pair 35. The paper ejection roller pair 36 ejects the paper P1 and the medium P2 recorded by the recording unit 40 to the paper ejection tray 16.
＜タンクユニット１８＞
　タンクユニット１８は、図３に示すように、４つのタンク１８ａ～１８ｄを有している。これら４つのタンク１８ａ～１８ｄは、プリンタ本体２の搬送方向の下流側且つ図３中右側の部分に設けられ、左右方向（走査方向）Ａ３に並んで配置されている。４つのタンク１８ａ～１８ｄには、右側に位置するものから順に、ブラック、イエロー、シアン、マゼンタのインクが貯留されている。つまり、最も右側のタンク１８ａには、ブラックインクが貯留されており、その他の３つのタンク１８ｂ～１８ｄには、カラーインクが貯留されている。そして、４つのタンク１８ａ～１８ｄに貯留されたこれら４色のインクが４本のチューブ等（不図示）を介してインクジェットヘッド４１（後述する）に供給される。 <Tank unit 18>
As shown in FIG. 3, the tank unit 18 has four tanks 18a to 18d. These four tanks 18a to 18d are provided on the downstream side of the printer main body 2 in the transport direction and on the right side portion in FIG. 3, and are arranged side by side in the left-right direction (scanning direction) A3. Black, yellow, cyan, and magenta inks are stored in the four tanks 18a to 18d in order from the one located on the right side. That is, black ink is stored in the rightmost tank 18a, and color ink is stored in the other three tanks 18b to 18d. Then, the inks of these four colors stored in the four tanks 18a to 18d are supplied to the inkjet head 41 (described later) via four tubes or the like (not shown).
＜第１給送部２０＞
　図２に示すように、第１給送部２０が第１給紙トレイ１５の上側に設けられている。第１給送部２０は、第１給紙ローラ２１と第１アーム２２を有する。第１給紙ローラ２１は、第１アーム２２の先端に軸支されている。第１アーム２２は、支軸２２ａに回動自在に支持され、バネなどにより付勢されて第１給紙ローラ２１が第１給紙トレイ１５に接触するように下側へ回動されている。また、第１アーム２２は、第１給紙トレイ１５の着脱する際に上方へ退避可能に構成されている。第１給紙ローラ２１は、伝達機構（不図示）を介して第１ＡＳＦモータ２０Ｍの動力が伝達されて回転し、第１給紙トレイ１５内に積載された用紙Ｐ１が、搬送路２５へ給送される。 <1st feeding unit 20>
As shown in FIG. 2, the first feeding unit 20 is provided on the upper side of the first paper feed tray 15. The first feeding unit 20 has a first paper feed roller 21 and a first arm 22. The first paper feed roller 21 is pivotally supported at the tip of the first arm 22. The first arm 22 is rotatably supported by the support shaft 22a and is urged by a spring or the like so that the first paper feed roller 21 is rotated downward so as to come into contact with the first paper feed tray 15. .. Further, the first arm 22 is configured to be retractable upward when the first paper feed tray 15 is attached / detached. The first paper feed roller 21 rotates by transmitting the power of the first ASF motor 20M via a transmission mechanism (not shown), and the paper P1 loaded in the first paper feed tray 15 is supplied to the transport path 25. Will be sent.
＜第１給紙トレイ１５＞
　図２に示すように、第１給紙トレイ１５は、斜壁部１５ａを有する。斜壁部１５ａは、第１給紙トレイ１５に載置される用紙Ｐ１が第１給紙ローラ２１によって給送されるときに、用紙Ｐ１を搬送路２５に案内する。 <First Paper Tray 15>
As shown in FIG. 2, the first paper feed tray 15 has an inclined wall portion 15a. The inclined wall portion 15a guides the paper P1 to the transport path 25 when the paper P1 placed on the first paper feed tray 15 is fed by the first paper feed roller 21.
＜搬送路２５＞
　搬送路２５は、筐体１１内に構成されており、図２に示すように、第１給紙トレイ１５の後側の端部から上方且つプリンタ１の前側へ曲がっている。第１給紙トレイ１５から給送された用紙Ｐ１は、搬送路２５により下方から上方へＵターンするように案内されて記録部４０に至る。 <Transport path 25>
The transport path 25 is configured in the housing 11, and as shown in FIG. 2, is bent upward from the rear end of the first paper feed tray 15 and toward the front side of the printer 1. The paper P1 fed from the first paper feed tray 15 is guided by the transport path 25 to make a U-turn from the bottom to the top and reaches the recording unit 40.
＜分岐路２５ａ＞
　搬送路２５には、分岐路２５ａが接続されている。分岐路２５ａも筐体１１内に構成されており、第１給紙トレイ１５よりも後方において、上下方向Ａ１に延在しており、搬送路２５に接続されている。給紙ユニット３から給送された媒体Ｐ２は、分岐路２５ａから搬送路２５へと案内され、搬送路２５により下方から前方へと案内されて記録部４０に至る。 <Branch road 25a>
A branch path 25a is connected to the transport path 25. The branch path 25a is also configured in the housing 11, extends in the vertical direction A1 behind the first paper feed tray 15, and is connected to the transport path 25. The medium P2 fed from the paper feed unit 3 is guided from the branch path 25a to the transfer path 25, and is guided from the lower side to the front by the transfer path 25 to reach the recording unit 40.
＜搬送ローラ対３５、及び、排紙ローラ対３６＞
　搬送ローラ対３５は、下側に配置された搬送ローラ３５ａと上側に配置されたピンチローラ３５ｂとを有する。搬送ローラ３５ａは、伝達機構（不図示）を介してＬＦモータ３５Ｍの動力が伝達されて回転する。ピンチローラ３５ｂは、搬送ローラ３５ａの回転に伴って連れ回る。搬送ローラ３５ａとピンチローラ３５ｂとは、協働して用紙Ｐ１及び媒体Ｐ２を上下方向Ａ１から挟持し、用紙Ｐ１及び媒体Ｐ２を記録部４０へ搬送する。 <Convey roller pair 35 and paper ejection roller pair 36>
The transport roller pair 35 has a transport roller 35a arranged on the lower side and a pinch roller 35b arranged on the upper side. The transfer roller 35a rotates by transmitting the power of the LF motor 35M via a transmission mechanism (not shown). The pinch roller 35b rotates with the rotation of the transport roller 35a. The transport roller 35a and the pinch roller 35b cooperate with each other to sandwich the paper P1 and the medium P2 from the vertical direction A1 and transport the paper P1 and the medium P2 to the recording unit 40.
　排紙ローラ対３６は、下側に配置された排紙ローラ３６ａと、上側に配置された拍車ローラ３６ｂとを有する。排紙ローラ３６ａは、伝達機構（不図示）を介してＬＦモータ３５Ｍの動力が伝達されて回転する。拍車ローラ３６ｂは、排紙ローラ３６ａの回転に伴って連れ回る。排紙ローラ３６ａと拍車ローラ３６ｂとは、協働して用紙Ｐ１及び媒体Ｐ２を上下方向Ａ１から挟持し、用紙Ｐ１及び媒体Ｐ２を排紙トレイ１６に搬送する。 The paper ejection roller pair 36 has a paper ejection roller 36a arranged on the lower side and a spur roller 36b arranged on the upper side. The paper ejection roller 36a rotates by transmitting the power of the LF motor 35M via a transmission mechanism (not shown). The spur roller 36b rotates with the rotation of the paper ejection roller 36a. The paper ejection roller 36a and the spur roller 36b cooperate with each other to sandwich the paper P1 and the medium P2 from the vertical direction A1 and convey the paper P1 and the medium P2 to the paper ejection tray 16.
＜記録部４０＞
　図２及び図３に示すように、記録部４０は、インクジェットヘッド４１と、ヘッド移動機構５０と、プラテン６とを有する。ヘッド移動機構５０は、キャリッジ５１を含む。キャリッジ５１は、走査方向（左右方向Ａ３であって、用紙Ｐ１及び媒体Ｐ２の搬送方向と直交する方向）へ往復移動する。インクジェットヘッド４１は、キャリッジ５１に支持されている。 <Recording unit 40>
As shown in FIGS. 2 and 3, the recording unit 40 includes an inkjet head 41, a head moving mechanism 50, and a platen 6. The head moving mechanism 50 includes a carriage 51. The carriage 51 reciprocates in the scanning direction (the left-right direction A3, which is orthogonal to the transport direction of the paper P1 and the medium P2). The inkjet head 41 is supported by the carriage 51.
　インクジェットヘッド４１の下面は、当該インクジェットヘッド４１の下方に搬送された用紙Ｐ１及び媒体Ｐ２に対してインクを吐出する複数の吐出口４１ａが形成された吐出面４１ｂである。複数の吐出口４１ａは、図３に示すように、搬送方向に沿って配列された吐出口列が走査方向に４列形成されるように配置されている。本実施形態において、図３中最も右側の吐出口列に属する吐出口４１ａからは、ブラックインクが吐出され、他の３列の吐出口列に属する吐出口４１ａからは、カラーインク（マゼンタ、シアン、イエロー）が吐出される。インクジェットヘッド４１は、記録指令に基づく制御部５の制御により、吐出口４１ａから各色のインクを微小なインク滴として吐出する。 The lower surface of the inkjet head 41 is an ejection surface 41b formed with a plurality of ejection ports 41a for ejecting ink to the paper P1 and the medium P2 conveyed below the inkjet head 41. As shown in FIG. 3, the plurality of discharge ports 41a are arranged so that four discharge port rows arranged along the transport direction are formed in the scanning direction. In the present embodiment, black ink is discharged from the discharge port 41a belonging to the rightmost discharge port row in FIG. 3, and color ink (magenta, cyan) is discharged from the discharge port 41a belonging to the other three rows of discharge port rows. , Yellow) is discharged. The inkjet head 41 ejects ink of each color as minute ink droplets from the ejection port 41a under the control of the control unit 5 based on the recording command.
　インクジェットヘッド４１には、チューブジョイント４４が一体的に設けられている。そして、チューブジョイント４４に連結された可撓性の４本のチューブ（不図示）を介して、インクジェットヘッド４１とタンクユニット１８とが接続され、各色のインクがインクジェットヘッド４１に供給される。 The inkjet head 41 is integrally provided with a tube joint 44. Then, the inkjet head 41 and the tank unit 18 are connected via four flexible tubes (not shown) connected to the tube joint 44, and ink of each color is supplied to the inkjet head 41.
　インクジェットヘッド４１の下方には、搬送ローラ対３５によって搬送される用紙Ｐ１及び媒体Ｐ２を支持するプラテン６が配設されている。プラテン６は、キャリッジ５１の往復移動範囲のうち、用紙Ｐ１及び媒体Ｐ２が通過する部分に配設されている。プラテン６の幅は、搬送可能な用紙Ｐ１及び媒体Ｐ２の最大幅より十分に大きいので、搬送路２５を搬送される用紙Ｐ１及び媒体Ｐ２は常にプラテン６上を通過する。 Below the inkjet head 41, a platen 6 that supports the paper P1 and the medium P2 conveyed by the transfer roller pair 35 is arranged. The platen 6 is arranged in a portion of the reciprocating movement range of the carriage 51 through which the paper P1 and the medium P2 pass. Since the width of the platen 6 is sufficiently larger than the maximum width of the paper P1 and the medium P2 that can be conveyed, the paper P1 and the medium P2 conveyed through the transport path 25 always pass on the platen 6.
　ヘッド移動機構５０は、図３に示すように、一対のガイドレール５２、及び、ベルト伝達機構５３を含む。一対のガイドレール５２は、前後方向Ａ２に離隔して配置され、左右方向Ａ３に互いに平行に延在している。キャリッジ５１は、これら一対のガイドレール５２を跨ぐように配置され、当該一対のガイドレール５２上を左右方向Ａ３に沿って往復移動される。 As shown in FIG. 3, the head moving mechanism 50 includes a pair of guide rails 52 and a belt transmission mechanism 53. The pair of guide rails 52 are arranged apart from each other in the front-rear direction A2 and extend parallel to each other in the left-right direction A3. The carriage 51 is arranged so as to straddle the pair of guide rails 52, and is reciprocated on the pair of guide rails 52 along the left-right direction A3.
　また、ベルト伝達機構５３は、２つのプーリ５４，５５と、一部がキャリッジ５１に固定された無端状のタイミングベルト５６と、キャリッジモータ５０Ｍとを含む。２つのプーリ５４，５５は、左右方向Ａ３に互いに離隔して配置され、タイミングベルト５６が架け渡されている。プーリ５４は、キャリッジモータ５０Ｍの駆動軸と連結されており、キャリッジモータ５０Ｍが駆動されることで、タイミングベルト５６が走行し、キャリッジ５１とともにインクジェットヘッド４１が走査方向に移動する。 Further, the belt transmission mechanism 53 includes two pulleys 54 and 55, an endless timing belt 56 partially fixed to the carriage 51, and a carriage motor 50M. The two pulleys 54 and 55 are arranged apart from each other in the left-right direction A3, and the timing belt 56 is bridged. The pulley 54 is connected to the drive shaft of the carriage motor 50M, and when the carriage motor 50M is driven, the timing belt 56 travels and the inkjet head 41 moves in the scanning direction together with the carriage 51.
　インクジェットヘッド４１は、記録指令に基づく制御部５の制御により、吐出口４１ａから各色のインクを吐出する。つまり、キャリッジ５１が左右方向Ａ３へ往復移動することにより、インクジェットヘッド４１が用紙Ｐ１及び媒体Ｐ２に対して走査されると共に、吐出口４１ａから、各色のインクを吐出することで、プラテン６上を搬送される用紙Ｐ１及び媒体Ｐ２に画像が記録される。なお、プリンタ１内には、走査方向に間隔を空けて配列された多数の透光部（スリット）を有するリニアエンコーダ（不図示）が設けられている。一方、キャリッジ５１には、発光素子と受光素子とを有する透過型の位置検出センサ（不図示）が設けられている。そして、プリンタ１は、キャリッジ５１の移動中に位置検出センサが検出したリニアエンコーダの透光部の計数値から、キャリッジ５１の走査方向に関する現在位置を認識できるようになっており、キャリッジモータ５０Ｍの回転駆動が制御される。 The inkjet head 41 ejects ink of each color from the ejection port 41a under the control of the control unit 5 based on the recording command. That is, when the carriage 51 reciprocates in the left-right direction A3, the inkjet head 41 is scanned against the paper P1 and the medium P2, and ink of each color is ejected from the ejection port 41a to move on the platen 6. An image is recorded on the conveyed paper P1 and medium P2. A linear encoder (not shown) having a large number of translucent portions (slits) arranged at intervals in the scanning direction is provided in the printer 1. On the other hand, the carriage 51 is provided with a transmission type position detection sensor (not shown) having a light emitting element and a light receiving element. Then, the printer 1 can recognize the current position of the carriage 51 with respect to the scanning direction from the count value of the translucent portion of the linear encoder detected by the position detection sensor while the carriage 51 is moving. Rotational drive is controlled.
　図４に示すように、制御部５は、ＣＰＵ（Central Processing Unit）、ＲＯＭ（Read Only Memory）、ＲＡＭ（Random Access Memory）、ＡＳＩＣ（Application Specific Integrated Circuit）などを含み、これらが協働して、第１ＡＳＦモータ２０Ｍ、第２ＡＳＦモータ８０Ｍ（後述する）、ＬＦモータ３５Ｍ、キャリッジモータ５０Ｍ、インクジェットヘッド４１、切断用モータ９０Ｍ（後述する）等の動作を制御する。例えば、制御部５は、ＰＣから送信された記録指令に基づいて、インクジェットヘッド４１、第１ＡＳＦモータ２０Ｍ、ＬＦモータ３５Ｍ、キャリッジモータ５０Ｍ等を制御して、用紙Ｐ１に画像等を記録させる。また、制御部５は、ＰＣから送信された記録指令に基づいて、インクジェットヘッド４１、第２ＡＳＦモータ８０Ｍ、ＬＦモータ３５Ｍ、キャリッジモータ５０Ｍ、切断用モータ９０Ｍ等を制御して、媒体Ｐ２に画像等を記録させる。 As shown in FIG. 4, the control unit 5 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), an ASIC (Application Specific Integrated Circuit), and the like, and these cooperate with each other. , 1st ASF motor 20M, 2nd ASF motor 80M (described later), LF motor 35M, carriage motor 50M, inkjet head 41, cutting motor 90M (described later) and the like are controlled. For example, the control unit 5 controls the inkjet head 41, the first ASF motor 20M, the LF motor 35M, the carriage motor 50M, and the like based on the recording command transmitted from the PC, and causes the paper P1 to record an image or the like. Further, the control unit 5 controls the inkjet head 41, the second ASF motor 80M, the LF motor 35M, the carriage motor 50M, the cutting motor 90M, etc. based on the recording command transmitted from the PC, and displays an image or the like on the medium P2. To record.
　なお、本実施形態の制御部５では、ＣＰＵ及びＡＳＩＣを１つずつ有しているが、制御部５は、ＡＳＩＣを１つだけ含み、この１つのＡＳＩＣが必要な処理を一括して行うものであってもよいし、ＡＳＩＣを複数含み、これら複数のＡＳＩＣが必要な処理を分担して行うものであってもよい。 The control unit 5 of the present embodiment has one CPU and one ASIC, but the control unit 5 includes only one ASIC, and the one ASIC collectively performs necessary processing. Or, a plurality of ASICs may be included, and the plurality of ASICs may share the necessary processing.
＜給紙ユニット３＞
　給紙ユニット３は、図１、図２、図５及び図６に示すように、筐体６０と、第２給紙トレイ６１と、戻し送り機構７０と、第２給送部８０と、切断機構９０とを含む。給紙ユニット３は、後述する巻回体Ｐ２ａを回転可能に収容可能である。筐体６０は、図１に示すように、直方体形状を有しており、プリンタ本体２の下部に着脱可能に構成されている。筐体６０の前壁６０ａの略中央には、開口６０ｂが形成されている。筐体６０は、第２給紙トレイ６１を支持する。第２給紙トレイ６１は、開口６０ｂから前後方向Ａ２（直交する方向）に挿抜可能、すなわち、筐体６０から着脱可能に構成されている。 <Paper unit 3>
As shown in FIGS. 1, 2, 5, and 6, the paper feed unit 3 is disconnected from the housing 60, the second paper feed tray 61, the return feed mechanism 70, and the second feed unit 80. Includes mechanism 90. The paper feed unit 3 can rotatably accommodate the winding body P2a described later. As shown in FIG. 1, the housing 60 has a rectangular parallelepiped shape, and is configured to be removable from the lower part of the printer main body 2. An opening 60b is formed at substantially the center of the front wall 60a of the housing 60. The housing 60 supports the second paper feed tray 61. The second paper feed tray 61 is configured to be removable from the opening 60b in the front-rear direction A2 (orthogonal direction), that is, to be detachable from the housing 60.
＜第２給紙トレイ６１＞
　図５及び図６に示すように、第２給紙トレイ６１は、トレイ本体６１ａと、媒体Ｐ２の巻回体Ｐ２ａを支持する支持台６１ｂと、ガイド部材６１ｄとを有する。支持台６１ｂ及びガイド部材６１ｄは、トレイ本体６１ａに対して着脱可能に設けられている。トレイ本体６１ａは、図６に示すように、矩形平面形状を有している。また、トレイ本体６１ａは、支持台６１ｂ及びガイド部材６１ｄを取り外した状態において、例えば、Ａ４サイズの単票用紙を収容可能な平面サイズを有している。また、トレイ本体６１ａは、図５に示すように、後方端部に斜壁部６１ａ１を有する。斜壁部６１ａ１は、第２給紙ローラ８１によって給送される媒体Ｐ２を分岐路２５ａに向かって案内する。媒体Ｐ２は、用紙Ｐ１と同様に紙であるが、布などであってもよい。 <Second Paper Tray 61>
As shown in FIGS. 5 and 6, the second paper feed tray 61 has a tray main body 61a, a support base 61b for supporting the winding body P2a of the medium P2, and a guide member 61d. The support base 61b and the guide member 61d are detachably provided with respect to the tray body 61a. As shown in FIG. 6, the tray body 61a has a rectangular planar shape. Further, the tray body 61a has a flat surface size capable of accommodating, for example, A4 size cut sheet paper in a state where the support base 61b and the guide member 61d are removed. Further, as shown in FIG. 5, the tray body 61a has a slanted wall portion 61a1 at the rear end portion. The inclined wall portion 61a1 guides the medium P2 fed by the second paper feed roller 81 toward the branch path 25a. The medium P2 is paper like the paper P1, but may be cloth or the like.
　ガイド部材６１ｄは、図５及び図６に示すように、トレイ本体６１ａの後方端部と支持台６１ｂとの間に配置されており、巻回体Ｐ２ａから巻き出された媒体Ｐ２のトレイ本体６１ａの底部６１ａ２（底面）からの浮きを押さえるための板状部材である。ガイド部材６１ｄは、図６に示すように、左右方向Ａ３に長尺な略矩形平面形状を有し、後方中央に切り欠き部６１ｄ１が形成され、前方に切り欠き部６１ｄ２が形成されている。切り欠き部６１ｄ１は、後述する第２給紙ローラ８１及び第２アーム８２の先端部が、第２アーム８２の回動により、ちょうど出入り可能に形成されている。切り欠き部６１ｄ２には、後述のローラ７２が配置される。 As shown in FIGS. 5 and 6, the guide member 61d is arranged between the rear end portion of the tray body 61a and the support base 61b, and the tray body 61a of the medium P2 unwound from the winding body P2a. It is a plate-shaped member for suppressing the floating from the bottom portion 61a2 (bottom surface) of the. As shown in FIG. 6, the guide member 61d has a long substantially rectangular planar shape in the left-right direction A3, a notch portion 61d1 is formed in the rear center, and a notch portion 61d2 is formed in the front. The cutout portion 61d1 is formed so that the tip portions of the second paper feed roller 81 and the second arm 82, which will be described later, can be moved in and out by the rotation of the second arm 82. A roller 72, which will be described later, is arranged in the cutout portion 61d2.
　支持台６１ｂは、図５及び図６に示すように、前後方向Ａ２において、トレイ本体６１ａの中央と前端との間に配置されている。支持台６１ｂは、左右方向Ａ３に長尺な略直方体形状の台本体６２と、複数のローラ６３ａ～６３ｃとを有している。台本体６２は、その上面に前後方向Ａ２の中央を挟んで２つの傾斜面６２ａ，６２ｂが形成されている。２つの傾斜面６２ａ，６２ｂのうち、傾斜面６２ａは前方に配置されており、傾斜面６２ｂは後方に配置されている。これら２つの傾斜面６２ａ，６２ｂは、互いに近づくに連れて下方に傾斜するように構成されている。ローラ６３ａは、傾斜面６２ａの後端部に左右方向Ａ３に沿って８つ配列されている。ローラ６３ｂは、斜面６２ｂの前端部に左右方向Ａ３に沿って８つ配列されている。ローラ６３ｃは、斜面６２ｂの後端部に左右方向Ａ３に沿って８つ配列されている。これら複数のローラ６３ａ，６３ｂは、媒体Ｐ２の巻回体Ｐ２ａの外周面Ｐ２ａ１の下方部分と当接し、巻回体Ｐ２ａを下方から支持する。複数のローラ６３ｃは、巻回体Ｐ２ａから巻き出された媒体Ｐ２を案内する。これら複数のローラ６３ａ～６３ｃは、左右方向Ａ３に平行な回転軸心を中心として回転可能に台本体６２に支持されている。このため、媒体Ｐ２の巻回体Ｐ２ａも左右方向Ａ３に平行な回転軸心Ｃを中心として回転可能となる。また、台本体６２には、上方に開口した溝６２ｃが形成されている。溝６２ｃは、図６に示すように、台本体６２の前後方向Ａ２の中央であって２つの傾斜面６２ａ，６２ｂの間に配置されている。 As shown in FIGS. 5 and 6, the support base 61b is arranged between the center and the front end of the tray main body 61a in the front-rear direction A2. The support base 61b has a base body 62 having a substantially rectangular parallelepiped shape that is long in the left-right direction A3, and a plurality of rollers 63a to 63c. The base body 62 is formed with two inclined surfaces 62a and 62b on the upper surface thereof with the center of the front-rear direction A2 interposed therebetween. Of the two inclined surfaces 62a and 62b, the inclined surface 62a is arranged in the front and the inclined surface 62b is arranged in the rear. These two inclined surfaces 62a and 62b are configured to incline downward as they approach each other. Eight rollers 63a are arranged at the rear end of the inclined surface 62a along the left-right direction A3. Eight rollers 63b are arranged at the front end of the slope 62b along the left-right direction A3. Eight rollers 63c are arranged at the rear end of the slope 62b along the left-right direction A3. The plurality of rollers 63a and 63b come into contact with the lower portion of the outer peripheral surface P2a1 of the winding body P2a of the medium P2, and support the winding body P2a from below. The plurality of rollers 63c guide the medium P2 unwound from the winding body P2a. These plurality of rollers 63a to 63c are rotatably supported by the base body 62 about a rotation axis parallel to the left-right direction A3. Therefore, the winding body P2a of the medium P2 can also rotate about the rotation axis C parallel to the left-right direction A3. Further, the base body 62 is formed with a groove 62c that opens upward. As shown in FIG. 6, the groove 62c is arranged at the center of the base body 62 in the front-rear direction A2 and between the two inclined surfaces 62a and 62b.
＜戻し送り機構７０＞
　戻し送り機構７０は、第２給紙トレイ６１が筐体６０に対して完全に装着された完全装着状態から第２給紙トレイ６１を前方に移動させて筐体６０から取り外す動作に連動して、巻回体Ｐ２ａから巻き出された媒体Ｐ２を巻回体Ｐ２ａに向けて送る機構である。戻し送り機構７０は、巻回体Ｐ２ａから巻き出された媒体Ｐ２を挟持可能な一対のローラ７１，７２と、ローラ７１を回転させる回転機構７３とを有している。一対のローラ７１，７２は、第２給紙トレイ６１を筐体６０に装着するときの第２給紙トレイ６１の先端部（図５中後方端部）と巻回体Ｐ２ａとの間に配置され、第２給紙トレイ６１に回転可能に支持されている。より詳細には、一対のローラ７１，７２のうちの一方のローラ７１は、図６に示すように、左右方向Ａ３に長尺に延在しており、その両端がトレイ本体６１ａの左右の側壁に回転可能に支持されている。他方のローラ７２は、図５に示すように、ローラ７１よりもその直径が大きく、ローラ７１に対して上方から接するように配置されている。また、ローラ７２は、図６に示すように、左右方向Ａ３に長尺に延在しており、ガイド部材６１ｄの切り欠き部６１ｄ２に配置され、その両端がガイド部材６１ｄに回転可能に支持されている。つまり、ローラ７２は、第２給紙トレイ６１の先端部（図５中後方端部）から最も離れたガイド部材６１ｄの端部（図５中前端部）に回転可能に支持されている。また、ガイド部材６１ｄは、第２給紙トレイ６１の先端部（図５中後方端部）と戻し送り機構７０との間に配置されている。また、一対のローラ７１，７２で巻回体Ｐ２ａから巻き出された媒体Ｐ２を挟持することが可能であるため、支持台６１ｂにセットされた巻回体Ｐ２ａから巻き出した媒体Ｐ２を、一対のローラ７１，７２で挟持した状態で、ローラ７２を手動で図５中反時計回りに回転させることで、媒体Ｐ２の先端を所望位置まで送り出してセットしやすくなる。ここでいう、所望位置とは、例えば、筐体６０に対する第２給紙トレイ６１の完全装着状態において、第２給紙ローラ８１と接触可能な位置やトレイ本体６１ａの図５中後方端近傍である。 <Return feed mechanism 70>
The return feed mechanism 70 is linked to the operation of moving the second paper feed tray 61 forward from the fully mounted state in which the second paper feed tray 61 is completely mounted on the housing 60 and removing the second paper feed tray 61 from the housing 60. , A mechanism for feeding the medium P2 unwound from the winding body P2a toward the winding body P2a. The return feed mechanism 70 has a pair of rollers 71 and 72 capable of sandwiching the medium P2 unwound from the winding body P2a, and a rotation mechanism 73 for rotating the rollers 71. The pair of rollers 71 and 72 are arranged between the tip end portion (rear end portion in FIG. 5) of the second paper feed tray 61 and the winding body P2a when the second paper feed tray 61 is mounted on the housing 60. It is rotatably supported by the second paper feed tray 61. More specifically, as shown in FIG. 6, one roller 71 of the pair of rollers 71 and 72 extends long in the left-right direction A3, and both ends thereof are the left and right side walls of the tray body 61a. It is rotatably supported. As shown in FIG. 5, the other roller 72 has a diameter larger than that of the roller 71 and is arranged so as to be in contact with the roller 71 from above. Further, as shown in FIG. 6, the roller 72 extends long in the left-right direction A3, is arranged in the cutout portion 61d2 of the guide member 61d, and both ends thereof are rotatably supported by the guide member 61d. ing. That is, the roller 72 is rotatably supported by the end portion (front end portion in FIG. 5) of the guide member 61d farthest from the tip end portion (rear end portion in FIG. 5) of the second paper feed tray 61. Further, the guide member 61d is arranged between the tip end portion (rear end portion in FIG. 5) of the second paper feed tray 61 and the return feed mechanism 70. Further, since the medium P2 unwound from the winding body P2a can be sandwiched between the pair of rollers 71 and 72, the medium P2 unwound from the winding body P2a set on the support base 61b is paired. By manually rotating the roller 72 counterclockwise in FIG. 5 while being sandwiched between the rollers 71 and 72, the tip of the medium P2 is fed out to a desired position and set easily. The desired position referred to here is, for example, a position where the second paper feed tray 61 can be in contact with the second paper feed roller 81 when the second paper feed tray 61 is completely mounted on the housing 60, or near the rear end in FIG. 5 of the tray body 61a. is there.
　回転機構７３は、図７に示すように、動力伝達部７４と、ピニオンギヤ７５と、ラックギヤ７６とを有する。動力伝達部７４及びピニオンギヤ７５は、互いに連結された状態で左右方向Ａ３に並んで配置されている。動力伝達部７４は、公知のワンウェイクラッチであり、ローラ７１の左端部に連結され、ピニオンギヤ７５の一方向の回転力をローラ７１に伝達する。本実施形態における動力伝達部７４は、図５中、ピニオンギヤ７５が反時計回りに回転したときの回転力をローラ７１に伝達し、時計回りに回転したときの回転力をローラ７１に伝達しないように構成されている。ピニオンギヤ７５は、ラックギギヤ７６と噛み合って回転可能に構成されている。また、これら動力伝達部７４及びピニオンギヤ７５は、トレイ本体６１ａの左側方に配置されている。 As shown in FIG. 7, the rotation mechanism 73 includes a power transmission unit 74, a pinion gear 75, and a rack gear 76. The power transmission unit 74 and the pinion gear 75 are arranged side by side in the left-right direction A3 in a state of being connected to each other. The power transmission unit 74 is a known one-way clutch, which is connected to the left end portion of the roller 71 and transmits the rotational force in one direction of the pinion gear 75 to the roller 71. In FIG. 5, the power transmission unit 74 in the present embodiment transmits the rotational force when the pinion gear 75 rotates counterclockwise to the roller 71, and does not transmit the rotational force when the pinion gear 75 rotates clockwise to the roller 71. It is configured in. The pinion gear 75 is configured to be rotatable by meshing with the rack gear 76. Further, the power transmission unit 74 and the pinion gear 75 are arranged on the left side of the tray main body 61a.
　ラックギヤ７６は、筐体６０の溝部６０ｄに配置されている。溝部６０ｄは、図１及び図７に示すように、開口６０ｄの左側壁の下端部において、前端から前後方向Ａ２の中央にかけて形成されている。ラックギヤ７６は、前後方向Ａ２に延在して形成されている。また、溝部６０ｄは、第２給紙トレイ６１を筐体６０に装着する際に、動力伝達部７４及びピニオンギヤ７５が配置可能に構成されている。ラックギヤ７６は、図７に示すように、第２給紙トレイ６１が筐体６０に対して完全装着状態であるときに、その後方端がピニオンギヤ７５と噛み合わない位置であってピニオンギヤ７５よりも前方に位置する。このため、第２給紙トレイ６１が筐体６０に対して完全装着状態にあるときに、ローラ７１が回転自在となる。したがって、一対のローラ７１，７２によって挟持された媒体Ｐ２を搬送する際の搬送負荷が小さくなる。また、ラックギヤ７６は、半装着状態において、ピニオンギヤ７５と噛み合うことが可能な位置に配置されている。半装着状態とは、第２給紙トレイ６１を完全装着状態から前方に移動させて第２給紙トレイ６１が筐体６０から取り外されるまでの間の第２給紙トレイ６１の状態をいう。また、ラックギヤ７６は、第２給紙トレイ６１が完全装着状態から前方に移動させる際にピニオンギヤ７５と噛み合うことで、当該ピニオンギヤ７５を図５中反時計回りに回転させ、筐体６０に対して半装着状態の第２給紙トレイ６１を後方に移動させる際にピニオンギヤ７５と噛み合うことで、当該ピニオンギヤ７５を図５中時計回りに回転させる。 The rack gear 76 is arranged in the groove portion 60d of the housing 60. As shown in FIGS. 1 and 7, the groove portion 60d is formed at the lower end portion of the left side wall of the opening 60d from the front end to the center in the front-rear direction A2. The rack gear 76 is formed so as to extend in the front-rear direction A2. Further, the groove portion 60d is configured so that the power transmission portion 74 and the pinion gear 75 can be arranged when the second paper feed tray 61 is mounted on the housing 60. As shown in FIG. 7, when the second paper feed tray 61 is fully mounted on the housing 60, the rack gear 76 is located at a position where its rear end does not mesh with the pinion gear 75 and is in front of the pinion gear 75. Located in. Therefore, the roller 71 is rotatable when the second paper feed tray 61 is completely mounted on the housing 60. Therefore, the transport load when transporting the medium P2 sandwiched by the pair of rollers 71 and 72 is reduced. Further, the rack gear 76 is arranged at a position where it can mesh with the pinion gear 75 in the semi-mounted state. The semi-mounted state refers to the state of the second paper feed tray 61 until the second paper feed tray 61 is moved forward from the fully mounted state and the second paper feed tray 61 is removed from the housing 60. Further, the rack gear 76 meshes with the pinion gear 75 when the second paper feed tray 61 is moved forward from the fully mounted state, so that the pinion gear 75 is rotated counterclockwise in FIG. 5 with respect to the housing 60. When the second paper feed tray 61 in the semi-mounted state is moved rearward, it meshes with the pinion gear 75 to rotate the pinion gear 75 clockwise in FIG.
＜第２給送部８０＞
　図５に示すように、第２給送部８０は、第２給紙トレイ６１の上側に設けられている。第２給送部８０は、第２給紙ローラ８１と第２アーム８２を有する。第２給紙ローラ８１は、第２アーム８２の先端に軸支されている。第２アーム８２は、支軸８２ａに回動自在に支持され、バネなどにより付勢されて第２給紙ローラ８１が第２給紙トレイ６１に接触するように下側へ回動されている。また、第２アーム８２は、第２給紙トレイ６１の着脱する際に上方の退避位置（図８参照）へ退避可能に構成されている。第２給紙ローラ８１は、伝達機構（不図示）を介して第２ＡＳＦモータ８０Ｍの動力が伝達されて回転し、第２給紙トレイ６１内に収容された巻回体Ｐ２ａから巻き出された媒体Ｐ２が、切断機構９０を経由して分岐路２５ａへ給送される。 <2nd feeding unit 80>
As shown in FIG. 5, the second feeding unit 80 is provided on the upper side of the second paper feed tray 61. The second feeding unit 80 has a second paper feed roller 81 and a second arm 82. The second paper feed roller 81 is pivotally supported at the tip of the second arm 82. The second arm 82 is rotatably supported by the support shaft 82a and is urged by a spring or the like so that the second paper feed roller 81 is rotated downward so as to come into contact with the second paper feed tray 61. .. Further, the second arm 82 is configured to be retractable to an upper retracted position (see FIG. 8) when the second paper feed tray 61 is attached / detached. The power of the second ASF motor 80M is transmitted to the second paper feed roller 81 via a transmission mechanism (not shown) to rotate the second paper feed roller 81, and the second paper feed roller 81 is unwound from the winding body P2a housed in the second paper feed tray 61. The medium P2 is fed to the branch path 25a via the cutting mechanism 90.
＜切断機構９０＞
　切断機構９０は、図５及び図６に示すように、筐体６０の後方上部に設置されている。切断機構９０は、左右方向Ａ３に沿って長尺に延在しており、媒体Ｐ２を左右方向Ａ３に沿って切断可能な、公知の切断機構である。切断機構９０は、第２給紙ローラ８１によって給送されてきた媒体Ｐ２を通過する搬送路９１を画定するガイド部９２と、カッター（不図示）と、当該カッターを駆動する切断用モータ９０Ｍ（図４参照）とを含む。カッターは、左右方向Ａ３に沿って移動可能に構成され、搬送路９１内の媒体Ｐ２を切断する。切断機構９０は、制御部５の制御により、第２給送部８０によって給送される媒体Ｐ２を所望位置にて切断する。このため、切断された媒体Ｐ２の先端は、第２給紙トレイ６１の先端（図５中後端）よりも上方位置に配置される。本実施形態においては、搬送路９１内に切断された媒体Ｐ２の先端が位置する。本実施形態においては、切断機構９０が筐体６０に設けられているが、プリンタ本体２に設けられていてもよい。 <Cut mechanism 90>
As shown in FIGS. 5 and 6, the cutting mechanism 90 is installed in the upper rear portion of the housing 60. The cutting mechanism 90 is a known cutting mechanism that extends long along the left-right direction A3 and can cut the medium P2 along the left-right direction A3. The cutting mechanism 90 includes a guide portion 92 for defining a transport path 91 passing through the medium P2 fed by the second paper feed roller 81, a cutter (not shown), and a cutting motor 90M (not shown) for driving the cutter. (See FIG. 4). The cutter is configured to be movable along the left-right direction A3 and cuts the medium P2 in the transport path 91. The cutting mechanism 90 cuts the medium P2 fed by the second feeding unit 80 at a desired position under the control of the control unit 5. Therefore, the tip of the cut medium P2 is arranged at a position above the tip of the second paper feed tray 61 (rear end in FIG. 5). In the present embodiment, the tip of the cut medium P2 is located in the transport path 91. In the present embodiment, the cutting mechanism 90 is provided in the housing 60, but it may be provided in the printer main body 2.
＜戻し送り機構７０の動作＞
　続いて、給紙ユニット３の第２給紙トレイ６１を筐体６０に対して着脱するときの戻し送り機構７０の動作について、図５及び図８～図１０を参照しつつ以下に説明する。プリンタ１は、通常、図５に示すように、第２給紙トレイ６１が筐体６０に対して完全装着状態であるときに使用される。そして、媒体Ｐ２は、画像記録に使用される際に切断機構９０で切断されるため、その先端が搬送路９１内に存在する。 <Operation of return feed mechanism 70>
Subsequently, the operation of the return feed mechanism 70 when the second paper feed tray 61 of the paper feed unit 3 is attached to and detached from the housing 60 will be described below with reference to FIGS. 5 and 8 to 10. The printer 1 is usually used when the second paper feed tray 61 is completely mounted on the housing 60, as shown in FIG. Since the medium P2 is cut by the cutting mechanism 90 when it is used for image recording, its tip is present in the transport path 91.
　ユーザが、第２給紙トレイ６１内を見るためなどに、第２給紙トレイ６１を筐体６０から取り外すために前方へと抜き出すと、戻し送り機構７０の一対のローラ７１，７２により巻回体Ｐ２ａから巻き出された媒体Ｐ２が、巻回体Ｐ２ａに向けて送られ、媒体Ｐ２の先端が移動する。なお、このとき第２アーム８２は退避位置に移動している。 When the user pulls out the second paper feed tray 61 forward to remove it from the housing 60, for example, to look inside the second paper feed tray 61, it is wound by a pair of rollers 71, 72 of the return feed mechanism 70. The medium P2 unwound from the body P2a is sent toward the wound body P2a, and the tip of the medium P2 moves. At this time, the second arm 82 has moved to the retracted position.
　より詳細には、第２給紙トレイ６１を、図５に示す完全装着状態から、半装着状態であって図８に示す位置まで移動させると、ピニオンギヤ７５とラックギヤ７６とが噛み合い始める。そして、この状態からさらに第２給紙トレイ６１を前方に移動させると、図９に示すように、ピニオンギヤ７５がラックギヤ７６との噛み合いにより、図９中反時計回りに回転する。つまり、ピニオンギヤ７５とともにローラ７１も図９中反時計回りに回転する。このようにローラ７１が回転することで、ローラ７１とローラ７２とで挟持された媒体Ｐ２が巻回体Ｐ２ａに向かって送られる。つまり、媒体Ｐ２が巻回体Ｐ２ａへ戻される。このとき、ローラ７２は、ローラ７１によって媒体Ｐ２が巻回体Ｐ２ａに戻されることで、図９中時計回りに回転する。これにより、巻回体Ｐ２ａと一対のローラ７１，７２間の媒体Ｐ２が上方にやや撓んだ状態となるが、媒体Ｐ２の腰によって巻回体Ｐ２ａ自体が回転軸心Ｃを中心として図９中時計回りに回転し、戻し送り機構７０によって戻された媒体Ｐ２を巻き取る。また、このとき、巻回体Ｐ２ａは、支持台６１ｂの複数のローラ６３ａ，６３ｂによって支持されているため、回転軸心Ｃを中心として回転しやすい。このため、戻し送り機構７０によって戻されてきた媒体Ｐ２を巻き取りやすくなる。つまり、媒体Ｐ２が比較的腰の弱い柔軟なものであっても、媒体Ｐ２を巻き取りやすくなる。 More specifically, when the second paper feed tray 61 is moved from the fully mounted state shown in FIG. 5 to the position shown in FIG. 8 in the semi-mounted state, the pinion gear 75 and the rack gear 76 start to mesh with each other. Then, when the second paper feed tray 61 is further moved forward from this state, as shown in FIG. 9, the pinion gear 75 rotates counterclockwise in FIG. 9 due to the engagement with the rack gear 76. That is, the roller 71 rotates counterclockwise in FIG. 9 together with the pinion gear 75. By rotating the roller 71 in this way, the medium P2 sandwiched between the roller 71 and the roller 72 is sent toward the winding body P2a. That is, the medium P2 is returned to the winding body P2a. At this time, the roller 72 rotates clockwise in FIG. 9 when the medium P2 is returned to the winding body P2a by the roller 71. As a result, the medium P2 between the winding body P2a and the pair of rollers 71 and 72 is slightly bent upward, but the winding body P2a itself is centered on the rotation axis C due to the waist of the medium P2. It rotates in the middle clockwise direction and winds up the medium P2 returned by the return feed mechanism 70. Further, at this time, since the winding body P2a is supported by a plurality of rollers 63a and 63b of the support base 61b, it is easy to rotate about the rotation axis C. Therefore, the medium P2 returned by the return feed mechanism 70 can be easily wound up. That is, even if the medium P2 is relatively weak and flexible, the medium P2 can be easily wound up.
　そして、第２給紙トレイ６１をさらに前方へと移動させると、ピニオンギヤ７５とラックギヤ７６とが噛み合っている間、ローラ７１が図９中反時計回りに回転し、その後、図１０に示すように、ピニオンギヤ７５がラックギヤ７６よりも前方に移動して、両者の噛み合いがなくなるときには、ローラ７１の回転も停止する。また、第２給紙トレイ６１を筐体６０から取り外す動作に連動した戻し送り機構７０による媒体Ｐ２の巻回体Ｐ２ａへの戻しは、ピニオンギヤ７５がラックギヤ７６と噛み合っている間、行われる。この巻回体Ｐ２ａへの媒体Ｐ２の戻しにより、媒体Ｐ２の先端は、図１０に示すように、搬送ガイド６１ｄの後端とトレイ本体６１ａとの間に配置される。つまり、戻し送り機構７０は、第２給紙トレイ６１を完全装着状態からピニオンギヤ７５がラックギヤ７６よりも前方に位置する位置（ピニオンギヤ７５とラックギヤ７６との噛み合いが終わる位置）まで抜き出すことで、媒体Ｐ２の先端が搬送路９１から図５に示す第２給紙ローラ８１とトレイ本体６１ａの底部６１ａ２との当接点の手前まで移動するように、媒体Ｐ２を巻回体Ｐ２ａに向かって送るように構成されている。なお、戻し送り機構７０は、第２給紙トレイ６１を完全装着状態からピニオンギヤ７５がラックギヤ７６よりも前方に位置する位置まで抜き出したときに、媒体Ｐ２の先端が、トレイ本体６１ａの斜壁部６１ａ１の上端よりも下方に位置する位置まで、媒体Ｐ２を巻回体Ｐ２ａに向かって送ることが可能であればよい。 Then, when the second paper feed tray 61 is further moved forward, the roller 71 rotates counterclockwise in FIG. 9 while the pinion gear 75 and the rack gear 76 are engaged with each other, and then as shown in FIG. When the pinion gear 75 moves forward of the rack gear 76 and the two are disengaged, the rotation of the roller 71 also stops. Further, the return feed mechanism 70 linked to the operation of removing the second paper feed tray 61 from the housing 60 returns the medium P2 to the winding body P2a while the pinion gear 75 is engaged with the rack gear 76. By returning the medium P2 to the wound body P2a, the tip of the medium P2 is arranged between the rear end of the transport guide 61d and the tray main body 61a as shown in FIG. That is, the return feed mechanism 70 pulls out the second paper feed tray 61 from the fully mounted state to the position where the pinion gear 75 is located in front of the rack gear 76 (the position where the meshing between the pinion gear 75 and the rack gear 76 ends). The medium P2 is fed toward the winding body P2a so that the tip of the P2 moves from the transport path 91 to the front of the contact point between the second paper feed roller 81 shown in FIG. 5 and the bottom portion 61a2 of the tray body 61a. It is configured. In the return feed mechanism 70, when the second paper feed tray 61 is pulled out from the fully mounted state to the position where the pinion gear 75 is located in front of the rack gear 76, the tip of the medium P2 is the inclined wall portion of the tray body 61a. It suffices if the medium P2 can be fed toward the winding body P2a to a position located below the upper end of 61a1.
　この後、第２給紙トレイ６１を筐体６０から取り外してから、ユーザが第２給紙トレイ６１を後方に移動させて、筐体６０に再装着させる。このとき、ピニオンギヤ７５とラックギヤ７６とが噛み合ってピニオンギヤ７５が図５中時計回りに回転するが、動力伝達部７４により、ピニオンギヤ７５の回転力がローラ７１に伝達されず、ローラ７１は媒体Ｐ２を搬送方向（後方）に送らない。したがって、媒体Ｐ２の先端は、第２給紙トレイ６１を筐体６０に装着させる際に移動せずに、トレイ本体６１ａ内、すなわち、斜壁部６１ａ１の上端よりも下方に位置した状態となる。このように第２給紙トレイ６１を筐体６０から抜き出し、その後、筐体６０に装着しても、媒体Ｐ２の先端がトレイ本体６１ａ内に配置されているため、第２給紙トレイ６１の装着時において、媒体Ｐ２の先端が第２給送部８０や筐体６０の構成要素に接触しなくなる。このため、媒体Ｐ２の先端を折れ曲がらせずに、第２給紙トレイ６１を筐体６０に装着することが可能となる。 After that, after removing the second paper feed tray 61 from the housing 60, the user moves the second paper feed tray 61 rearward and reattaches it to the housing 60. At this time, the pinion gear 75 and the rack gear 76 mesh with each other and the pinion gear 75 rotates clockwise in FIG. 5, but the rotational force of the pinion gear 75 is not transmitted to the roller 71 by the power transmission unit 74, and the roller 71 transmits the medium P2. Do not send in the transport direction (backward). Therefore, the tip of the medium P2 does not move when the second paper feed tray 61 is mounted on the housing 60, and is located in the tray main body 61a, that is, below the upper end of the inclined wall portion 61a1. .. Even if the second paper feed tray 61 is pulled out from the housing 60 and then mounted on the housing 60 in this way, the tip of the medium P2 is arranged in the tray body 61a, so that the second paper feed tray 61 At the time of mounting, the tip of the medium P2 does not come into contact with the components of the second feeding unit 80 and the housing 60. Therefore, the second paper feed tray 61 can be mounted on the housing 60 without bending the tip of the medium P2.
　以上に述べたように、本実施形態の給紙ユニット３によると、筐体６０から第２給紙トレイ６１を取り外す際に、巻回体Ｐ２ａから巻き出された媒体Ｐ２が巻回体Ｐ２ａに向けて送られ、媒体Ｐ２の先端が第２給紙トレイ６１内に引き戻される。このため、第２給紙トレイ６１を筐体６０に再度装着するときに、媒体Ｐ２の先端が筐体６０などに接触しにくくなり、折れ曲がりにくくなる。したがって、筐体６０に対する第２給紙トレイ６０の着脱動作を行っても媒体Ｐ２の先端が折れ曲がりにくくなるため、媒体Ｐ２を給送する際に媒体Ｐ２のジャムなどの給紙不良が生じるのを抑制することが可能となる。 As described above, according to the paper feed unit 3 of the present embodiment, when the second paper feed tray 61 is removed from the housing 60, the medium P2 unwound from the winding body P2a is transferred to the winding body P2a. The tip of the medium P2 is pulled back into the second paper feed tray 61. Therefore, when the second paper feed tray 61 is reattached to the housing 60, the tip of the medium P2 is less likely to come into contact with the housing 60 or the like, and is less likely to bend. Therefore, even if the second paper feed tray 60 is attached to and detached from the housing 60, the tip of the medium P2 is less likely to bend, so that a paper feed failure such as a jam of the medium P2 occurs when the medium P2 is fed. It becomes possible to suppress.
　戻し送り機構７０が、前後方向Ａ２において、第２給紙トレイ６１の先端部（図５中後方端部）と巻回体Ｐ２ａとの間に配置されている。これにより、戻し送り機構７０が第２給紙トレイ６１の先端部と巻回体Ｐ２ａとの間に配置される構成となる。 The return feed mechanism 70 is arranged between the tip end portion (rear end portion in FIG. 5) of the second paper feed tray 61 and the winding body P2a in the front-rear direction A2. As a result, the return feed mechanism 70 is arranged between the tip end portion of the second paper feed tray 61 and the winding body P2a.
　戻し送り機構７０が、一対のローラ７１，７２と、筐体６０から第２給紙トレイ６１を取り外す動作に連動してローラ７１を回転させる回転機構７３とを有している。これにより、比較的簡単な戻し送り機構の構成で、筐体６０から第２給紙トレイ６１を取り外す際に、媒体Ｐ２を巻回体Ｐ２ａに向けて送ることが可能となる。 The return feed mechanism 70 has a pair of rollers 71 and 72, and a rotation mechanism 73 that rotates the rollers 71 in conjunction with the operation of removing the second paper feed tray 61 from the housing 60. As a result, the medium P2 can be fed toward the winding body P2a when the second paper feed tray 61 is removed from the housing 60 with a relatively simple configuration of the return feed mechanism.
　回転機構７３が、ピニオンギヤ７５とラックギヤ７６とを有している。これにより、比較的簡単な回転機構７３の構成で、ローラ７１を回転させることが可能となる。 The rotation mechanism 73 has a pinion gear 75 and a rack gear 76. This makes it possible to rotate the roller 71 with a relatively simple configuration of the rotation mechanism 73.
　また、回転機構７３が動力伝達部７４を有している。これにより、第２給紙トレイ６１を装着する際に媒体Ｐ２の先端が移動して筐体６０などに接触するのを抑制することが可能となる。 Further, the rotation mechanism 73 has a power transmission unit 74. This makes it possible to prevent the tip of the medium P2 from moving and coming into contact with the housing 60 or the like when the second paper feed tray 61 is mounted.
　第２給紙トレイ６１には、前後方向Ａ２において、第２給紙トレイ６１の先端部（図５中後方端部）と一対のローラ７１，７２（戻し送り機構７０）との間に、ガイド部材６１ｄが設けられている。これにより、巻回体Ｐ２ａから巻き出された媒体Ｐ２の浮きを抑制することが可能となる。 The second paper feed tray 61 is provided with a guide in the front-rear direction A2 between the tip end portion (rear end portion in FIG. 5) of the second paper feed tray 61 and the pair of rollers 71, 72 (return feed mechanism 70). A member 61d is provided. This makes it possible to suppress the floating of the medium P2 unwound from the wound body P2a.
　また、戻し送り機構７０が、第２給紙トレイ６１を筐体６０から取り外したときの媒体Ｐ２の先端が、第２給紙トレイ６１の先端部（図５中後方端部）の上端よりも下方に配置されるように、媒体Ｐ２を戻すように構成されている。これにより、第２給紙トレイ６１を筐体６０に再度装着するときに、媒体Ｐ２の先端が筐体６０などにより一層接触しにくくなる。 Further, when the return feed mechanism 70 removes the second paper feed tray 61 from the housing 60, the tip of the medium P2 is closer to the upper end of the tip end portion (rear end portion in FIG. 5) of the second paper feed tray 61. It is configured to return the medium P2 so that it is placed below. As a result, when the second paper feed tray 61 is reattached to the housing 60, the tip of the medium P2 is less likely to come into contact with the housing 60 or the like.
　また、支持台６１ｂが複数のローラ６３ａ，６３ｂを有している。これにより、媒体Ｐ２の巻回体Ｐ２ａを支持台６１ｂの複数のローラ６３ａ，６３ｂで下方から回転可能に支持することが可能となる。 Further, the support base 61b has a plurality of rollers 63a and 63b. As a result, the winding body P2a of the medium P2 can be rotatably supported from below by the plurality of rollers 63a and 63b of the support base 61b.
　以上、本発明の好適な実施の形態について説明したが、本発明は上述の実施の形態に限られるものではなく、特許請求の範囲に記載した限りにおいて様々な変更が可能なものである。例えば、上述の給紙ユニット３は、プリンタ本体２に着脱可能な増設用ユニットであるが、プリンタ本体２に一体的に固定されていてもよい。さらに、プリンタ本体２の筐体１１及び第１給紙トレイ１５に戻し送り機構７０と同様な機構を設けて、プリンタ本体２自体に給紙ユニットが設けられていてもよい。これにおいても、上述の実施形態と同様の効果を得ることができる。 Although the preferred embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various modifications can be made as long as it is described in the claims. For example, the above-mentioned paper feed unit 3 is an extension unit that can be attached to and detached from the printer main body 2, but may be integrally fixed to the printer main body 2. Further, a mechanism similar to the return feed mechanism 70 may be provided in the housing 11 and the first paper feed tray 15 of the printer main body 2, and the paper feed unit may be provided in the printer main body 2 itself. Also in this case, the same effect as that of the above-described embodiment can be obtained.
　戻し送り機構７０は、一対のローラ７１，７２及び回転機構７３を有しているが、第２給紙トレイ６１を筐体６０に装着された状態から前方に移動させて取り外す際に、巻回体Ｐ２ａから巻き出された媒体Ｐ２を巻回体Ｐ２ａｂに戻すように、媒体Ｐ２を巻回体Ｐ２ａに向かって送ることが可能であれば、どのような構成でもよく、特に限定するものではない。例えば、第２給紙トレイ６１を前方に移動させる際に、巻回体Ｐ２ａから巻き出された媒体Ｐ２を挟持する一対のローラのうちの下方に位置するローラの外周面が筐体６０と当接することで、当該ローラが回転し媒体Ｐ２を巻回体Ｐ２ａに向かって送らせてもよい。こうすれば、回転機構７３を有していなくてもよい。 The return feed mechanism 70 has a pair of rollers 71 and 72 and a rotation mechanism 73, and is wound when the second paper feed tray 61 is moved forward from the state of being mounted on the housing 60 and removed. Any configuration may be used as long as the medium P2 can be sent toward the winding body P2a so that the medium P2 unwound from the body P2a is returned to the winding body P2ab, and is not particularly limited. .. For example, when the second paper feed tray 61 is moved forward, the outer peripheral surface of the roller located below the pair of rollers holding the medium P2 unwound from the winding body P2a is in contact with the housing 60. Upon contact, the roller may rotate to feed the medium P2 toward the winding body P2a. In this way, it is not necessary to have the rotation mechanism 73.
　第２給紙トレイ６１は、支持台６１ｂを有していなくてもよい。この場合、媒体Ｐ２の巻回体Ｐ２ａの中心に軸部を設け、当該軸部をトレイ本体６１ａで回転可能に支持すればよい。また、支持台６１ｂは、トレイ本体６１ａに固定されていてもよい。 The second paper feed tray 61 does not have to have the support base 61b. In this case, a shaft portion may be provided at the center of the winding body P2a of the medium P2, and the shaft portion may be rotatably supported by the tray body 61a. Further, the support base 61b may be fixed to the tray main body 61a.
　ガイド部材６１ｄは設けられていなくてもよい。また、ローラ７２は、ガイド部材６１ｄに支持されていなくてもよい。つまり、ローラ７２は、トレイ本体６１ａに回転可能に支持されていてもよい。 The guide member 61d may not be provided. Further, the roller 72 does not have to be supported by the guide member 61d. That is, the roller 72 may be rotatably supported by the tray body 61a.
　回転機構７３が、動力伝達部７４を有していなくてもよい。この場合、第２給紙トレイ６１を筐体６０から取り外す際の媒体Ｐ２の巻回体Ｐ２ａへの戻しを、媒体Ｐ２の先端が筐体６０などに接触するまでに行うように構成する。これにより、第２給紙トレイ６１を筐体６０に装着する際に、媒体Ｐ２の先端が筐体６０等に接触するのを抑制することが可能となる。 The rotation mechanism 73 does not have to have the power transmission unit 74. In this case, the medium P2 is returned to the winding body P2a when the second paper feed tray 61 is removed from the housing 60 until the tip of the medium P2 comes into contact with the housing 60 or the like. This makes it possible to prevent the tip of the medium P2 from coming into contact with the housing 60 or the like when the second paper feed tray 61 is mounted on the housing 60.
　戻し送り機構７０は、第２給紙トレイ６１を筐体６０から取り外す際に、巻回体Ｐ２ａから巻き出された媒体Ｐ２を巻回体Ｐ２ａに向けて送ることが可能であれば、媒体Ｐ２の先端が、第２給紙トレイ６１を筐体６０に装着するときの第２給紙トレイ６１の先端部（図５中後方端部）の上端よりも若干上方に配置されていてもよい。これにおいても、第２給紙トレイ６１を筐体６０に再度装着するときに、媒体Ｐ２の先端が筐体６０などに接触しにくくなり、折れ曲がりにくくなる。 When the second paper feed tray 61 is removed from the housing 60, the return feed mechanism 70 can feed the medium P2 unwound from the winding body P2a toward the winding body P2a, if possible, the medium P2. The tip of the second paper feed tray 61 may be arranged slightly above the upper end of the tip end portion (rear end portion in FIG. 5) when the second paper feed tray 61 is mounted on the housing 60. Also in this case, when the second paper feed tray 61 is reattached to the housing 60, the tip of the medium P2 is less likely to come into contact with the housing 60 or the like, and is less likely to be bent.
　また、以上では、用紙Ｐに記録を行うプリンタに本発明を適用した例について説明したが、これには限られない。媒体Ｐ２の巻回体Ｐ２ａを回転可能に収容可能な給紙ユニット全体に適用され得る。 Further, in the above, an example in which the present invention is applied to a printer that records on paper P has been described, but the present invention is not limited to this. It can be applied to the entire paper feed unit capable of rotatably accommodating the wound body P2a of the medium P2.
　３　給紙ユニット
６０　筐体
６１　第２給紙トレイ（給紙トレイ）
６１ａ　トレイ本体
６１ｂ　支持台
６１ｄ　ガイド部材
６３ａ，６３ｂ　ローラ
７０　戻し送り機構
７１　ローラ（一方のローラ）
７２　ローラ（他方のローラ）
７３　回転機構
７４　動力伝達部
７５　ピニオンギヤ
７６　ラックギヤ 3 Paper feed unit 60 Housing 61 Second paper feed tray (paper feed tray)
61a Tray body 61b Support base 61d Guide members 63a, 63b Roller 70 Return feed mechanism 71 Roller (one roller)
72 roller (the other roller)
73 Rotation mechanism 74 Power transmission part 75 Pinion gear 76 Rack gear

Claims (9)

  1. 　媒体がロール状に巻回された巻回体を回転可能に収容可能な給紙トレイと、前記給紙トレイを着脱可能に支持する筐体とを備えた給紙ユニットにおいて、
    　前記巻回体の回転軸心と直交する方向に前記給紙トレイを移動させて前記筐体から前記給紙トレイを取り外す動作に連動して、前記巻回体から巻き出された媒体を前記巻回体に向けて送る戻し送り機構を備えていることを特徴とする給紙ユニット。     In a paper feed unit including a paper feed tray capable of rotatably accommodating a wound body in which a medium is wound in a roll shape and a housing for detachably supporting the paper feed tray.
    The medium unwound from the winding body is wound in conjunction with the operation of moving the paper feed tray in a direction orthogonal to the rotation axis of the winding body and removing the paper feed tray from the housing. A paper feed unit characterized by having a return feed mechanism that feeds toward the rotating body.
  2. 　前記戻し送り機構は、前記直交する方向において、前記給紙トレイを前記筐体に装着するときの前記給紙トレイの先端部と前記巻回体との間に配置されていることを特徴とする請求項１に記載の給紙ユニット。 The return feed mechanism is characterized in that it is arranged between the tip end portion of the paper feed tray and the winding body when the paper feed tray is mounted on the housing in the orthogonal direction. The paper feed unit according to claim 1.
  3. 　前記戻し送り機構は、前記給紙トレイに回転可能に支持され、前記巻回体から巻き出された媒体を挟持可能な一対のローラと、前記一対のローラのうちの一方のローラを回転させる回転機構とを有しており、
    　前記回転機構は、前記筐体から前記給紙トレイを取り外す動作に連動して、前記一方のローラを回転させることを特徴とする請求項１又は２に記載の給紙ユニット。     The return feed mechanism is rotatably supported by the paper feed tray and rotates a pair of rollers capable of sandwiching a medium unwound from the winding body and one of the pair of rollers. Has a mechanism and
    The paper feed unit according to claim 1 or 2, wherein the rotation mechanism rotates one of the rollers in conjunction with an operation of removing the paper feed tray from the housing.
  4. 　前記回転機構は、
    　前記一方のローラに回転力を伝達するピニオンギヤと、
    　前記筐体に設けられ、前記給紙トレイの前記直交する方向の移動に伴って前記ピニオンギヤを回転させるように噛み合うラックギヤとを有していることを特徴とする請求項３に記載の給紙ユニット。     The rotation mechanism
    A pinion gear that transmits rotational force to one of the rollers,
    The paper feed unit according to claim 3, further comprising a rack gear provided in the housing and engaged so as to rotate the pinion gear as the paper feed tray moves in the orthogonal direction. ..
  5. 　前記回転機構は、前記ピニオンギヤからの回転力を前記一方のローラに伝達する動力伝達部をさらに備えており、
    　前記動力伝達部は、前記給紙トレイを前記筐体から取り外す際に、前記ラックギヤと噛み合うことで回転する前記ピニオンギヤの回転力を前記一方のローラに伝達し、前記給紙トレイを前記筐体に装着する際に、前記ラックギヤと噛み合うことで回転する前記ピニオンギヤの回転力を前記一方のローラに伝達しないことを特徴とする請求項４に記載の給紙ユニット。     The rotation mechanism further includes a power transmission unit that transmits the rotational force from the pinion gear to the one roller.
    When the paper feed tray is removed from the housing, the power transmission unit transmits the rotational force of the pinion gear that rotates by engaging with the rack gear to the one roller, and transfers the paper feed tray to the housing. The paper feed unit according to claim 4, wherein when mounted, the rotational force of the pinion gear that rotates by meshing with the rack gear is not transmitted to the one roller.
  6. 　前記給紙トレイには、前記直交する方向において、前記給紙トレイを前記筐体に装着するときの前記給紙トレイの先端部と前記戻し送り機構との間に、前記巻回体から巻き出された媒体の前記給紙トレイの底面からの浮きを押さえるガイド部材が設けられていることを特徴とする請求項１～５のいずれか１項に記載の給紙ユニット。 The paper feed tray is unwound from the winding body in the direction orthogonal to the paper feed tray between the tip end portion of the paper feed tray and the return feed mechanism when the paper feed tray is mounted on the housing. The paper feed unit according to any one of claims 1 to 5, wherein a guide member for suppressing the floating of the paper feed tray from the bottom surface of the paper feed tray is provided.
  7. 　前記給紙トレイには、前記直交する方向において、前記給紙トレイを前記筐体に装着するときの前記給紙トレイの先端部と前記戻し送り機構との間に、前記巻回体から巻き出された媒体の前記給紙トレイの底面からの浮きを押さえるガイド部材が設けられており、
    　前記一対のローラのうちの他方のローラが前記ガイド部材の前記給紙トレイの先端部と最も離れた端部に回転可能に支持されており、
    　前記一方のローラが前記他方のローラよりも下方において、前記給紙トレイに回転可能に支持されていることを特徴とする請求項３～５のいずれか１項に記載の給紙ユニット。     The paper feed tray is unwound from the winding body in the direction orthogonal to the paper feed tray between the tip end portion of the paper feed tray and the return feed mechanism when the paper feed tray is mounted on the housing. A guide member for suppressing the floating of the paper feed tray from the bottom surface of the paper feed tray is provided.
    The other roller of the pair of rollers is rotatably supported at the end of the guide member farthest from the tip of the paper feed tray.
    The paper feed unit according to any one of claims 3 to 5, wherein the one roller is rotatably supported by the paper feed tray below the other roller.
  8. 　前記戻し送り機構は、前記給紙トレイを前記筐体から取り外したときの媒体の先端が、前記給紙トレイを前記筐体に装着するときの先端部の上端よりも下方に配置されるように、前記巻回体から巻き出された媒体を前記巻回体に向けて送ることを特徴とする請求項１～７のいずれか１項に記載の給紙ユニット。 In the return feed mechanism, the tip of the medium when the paper feed tray is removed from the housing is arranged below the upper end of the tip when the paper feed tray is mounted on the housing. The paper feed unit according to any one of claims 1 to 7, wherein the medium unwound from the winding body is sent toward the winding body.
  9. 　前記給紙トレイは、トレイ本体と、前記トレイ本体上に配置され前記巻回体を下方から支持する支持台を有しており、
    　前記支持台は、前記巻回体の外周面の下方部分に当接しつつ回転可能な複数のローラを有していることを特徴とする請求項１～８のいずれかに記載の給紙ユニット。     The paper feed tray has a tray main body and a support base arranged on the tray main body and supporting the winding body from below.
    The paper feed unit according to any one of claims 1 to 8, wherein the support base has a plurality of rollers that can rotate while being in contact with a lower portion of an outer peripheral surface of the winding body.
PCT/JP2020/036239 2019-09-30 2020-09-25 Paper feeding unit WO2021065709A1 (en)

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JP2003080778A (en) * 2001-06-27 2003-03-19 Ricoh Co Ltd Sheet feeder and imaging apparatus
JP2011510883A (en) * 2008-01-04 2011-04-07 イーストマン コダック カンパニー Dual tray for image sheet
JP2012158442A (en) * 2011-02-01 2012-08-23 Seiko Epson Corp Recording device

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JP2002234645A (en) 2001-02-08 2002-08-23 Canon Inc Recorder using rolled paper
JP5421733B2 (en) 2009-10-30 2014-02-19 アマノ株式会社 Parking lot management system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002348011A (en) * 2001-03-16 2002-12-04 Canon Inc Recording device
JP2003080778A (en) * 2001-06-27 2003-03-19 Ricoh Co Ltd Sheet feeder and imaging apparatus
JP2011510883A (en) * 2008-01-04 2011-04-07 イーストマン コダック カンパニー Dual tray for image sheet
JP2012158442A (en) * 2011-02-01 2012-08-23 Seiko Epson Corp Recording device

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