JP2014065216A - Recording medium support member and recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure conveyability of a recording medium support member without adjusting conveying force of an ejection roller, and to prevent the recording medium support member from being conveyed into a recording device again when conveyed toward a direction opposite to a conveyance direction.SOLUTION: The recording medium support member is used for a recording device that includes: a disk tray base roller 27 which together with an ejection roller 9, supports a disk tray 4; a disk roller 11 which together with the ejection roller 9, holds and conveys the disk tray 4; and a disk roller spring 30 which is elastically displaced to bring the disk roller 11 into press-contact with the disk tray 4 when the disk tray 4 is conveyed. In a region of the conveyance-direction downstream end of the disk tray 4, the region coming in contact with the disk roller 11 when the disk tray 4 is conveyed, a step-shaped part 29 which makes displacement amount of the disk roller spring 30 pressing the disk roller 11 small, is provided along a conveyance direction.

Description

  The present invention relates to a recording medium support member that is used in a recording apparatus that records liquid characters on an information recording medium to record characters and the like, and relates to a recording apparatus that supports and conveys the information recording medium.

  In recent years, as recording devices such as printers, there has been an increasing demand for recording on various recording materials as well as recording characters on plain paper and photographic images on photo paper. Yes. As an example of a recording material, an ink jet of a disk-shaped information recording medium (hereinafter referred to as “disk medium”) such as a CD (compact disc) or a DVD (digital versatile disc) capable of ink jet recording on the surface. It is required to record characters, images, etc. on the recording surface.

  In these disk media, a data recording surface on which an information signal is recorded is located on the side opposite to the ink jet recording surface. This data recording surface is vulnerable to external scratches, and it is impossible to set a disk medium alone on a recording device because scratches may occur. Therefore, it is indispensable to transport using a dedicated tray for supporting the disk media.

  Such disc media and dedicated trays corresponding to disc media (hereinafter referred to as “disc trays”) have a plate thickness larger than that of sheet materials such as paper. It was necessary to devise the tip shape of the tray.

  In Patent Document 1, a part of the front end of the disc tray protrudes in the transport direction so that it can be easily slid between the main transport roller and the driven roller pressed against the main transport roller. A configuration is disclosed that allows for this.

JP 2006-131364 A

  However, in the configuration described in Patent Document 1, the disc tray conveyance force by the discharge roller is considered in consideration of the disc tray warpage, the variation in the size of the guide member that guides the conveyance of the disc tray, the variation in the spring pressure, and the like. Must be set strongly.

  On the other hand, after the recording operation on the disk medium is completed, the disk tray is held in a state where it is nipped by the discharge roller until the user removes the disk tray. For this reason, the discharge roller is in a state in which a conveying force can be applied to the disc tray, and when the discharge roller rotates in the disc tray conveyance direction, the disc tray is again drawn into the recording apparatus by the rotation of the discharge roller. It will be. Thus, in order to prevent the disc tray ejected by the ejection roller from being drawn into the recording apparatus again, it is necessary to set the disc tray conveying force by the ejection roller to be weak.

  In this way, both the transport force for obtaining the transportability and the discharge property of the disc tray and the transport force for preventing the disc tray transported in the direction opposite to the transport direction from being transported again into the recording apparatus are achieved. It was difficult.

  Accordingly, the present invention is a recording medium capable of ensuring the transportability of the recording medium support member without adjusting the transport force by the driving roller and preventing the recording medium support member from being transported again into the recording apparatus. It is an object to provide a support member and a recording apparatus.

In order to achieve the above-described object, a recording medium support member according to the present invention supports a recording head that discharges liquid onto an information recording medium for recording an information signal, and a recording medium support member that supports the information recording medium. A drive roller that conveys the recording medium, a driven roller that is disposed upstream of the drive roller in the conveyance direction of the information recording medium and supports the recording medium support member together with the drive roller, and an upstream of the drive roller in the conveyance direction A pressure driven roller that is disposed opposite to the recording medium support member and conveys the recording medium support member together with the drive roller, and a pressure driven elastically displaced when the recording medium support member is conveyed. A recording medium support member used in a recording apparatus comprising: a pressure spring that presses the roller against the recording medium support member;
A concave portion for reducing the amount of displacement of the pressure spring that presses the pressure driven roller is formed in the conveyance direction in the area where the pressure driven roller contacts the recording medium support member at the downstream end in the conveyance direction. It is provided along.

  The recording apparatus according to the present invention includes the recording medium support member of the present invention.

  According to the present invention, since the concave portion for reducing the displacement amount of the pressure spring is provided, the pressure driven roller can be pressed against the recording medium support member and conveyed, and the pressing force by the pressure driven roller can be reduced. It is possible to realize a state in which the sheet cannot be conveyed without being generated with a simple configuration. Therefore, it is possible to prevent the recording medium support member conveyed in the direction opposite to the conveyance direction from being drawn into the recording apparatus again without impairing the conveyance accuracy of the recording medium support member by the driving roller.

FIG. 5 is a perspective view for explaining a storage position and a supply position of a disk tray base in the recording apparatus of the first embodiment. FIG. 5 is a perspective view illustrating a drive train of a transport mechanism in the recording apparatus according to the first embodiment. FIG. 4 is a diagram illustrating a mechanism for switching a tray supply unit from a storage position to a supply position in the recording apparatus according to the first embodiment. FIG. 5 is a cross-sectional view for explaining a disk tray supply operation in the recording apparatus of the first embodiment. FIG. 5 is a plan view for explaining the positional relationship between the disk roller and the disk tray when the disk tray is conveyed in the recording apparatus of the first embodiment. FIG. 3 is a cross-sectional view illustrating a positional relationship between a disk roller and a disk tray during conveyance of the disk tray in the recording apparatus according to the first embodiment.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

(First embodiment)
First, main mechanisms of the recording apparatus according to the embodiment will be described. FIG. 1A is a perspective view illustrating a mechanism unit of the recording apparatus according to the embodiment. The recording apparatus mainly includes a recording unit that performs recording by discharging ink as liquid onto a recording material, and a paper feeding unit that feeds recording paper as a sheet-like recording material. In addition, the recording apparatus supplies a disc tray 4 with a conveyance unit that conveys a disc tray 4 as a recording medium support member that supports recording media and a disc medium as an information recording medium for recording information signals. A tray supply unit. Hereinafter, each part of the recording apparatus will be described.

(A) Recording unit The recording unit is configured to record an image on recording paper and an ink jet recording surface of a disk medium by a recording head (not shown) mounted on the carriage 1. The disc tray 4 that supports the disc media conveyed by the tray supply unit is composed of a platen 2 and a disc tray base roller 27 as a driven roller attached to the disc tray base 3 constituting the tray supply unit from the lower side. Supported.

  The disc tray base roller 27 is disposed upstream of the discharge roller 9 as a driving roller in the conveying direction of the disc medium (disc tray 4), and supports the disc tray 4 together with the discharge roller 9 ( (See FIG. 6). The disk media supported by the disk tray 4 ejects ink from a recording head located above the conveyed disk tray 4, whereby an image based on the recorded image information is recorded on the ink jet recording surface.

  The carriage 1 is provided so as to be movable in the scanning direction indicated by the X direction in FIG. 1A, which is a direction that supports the recording head and intersects the conveying direction of the disk tray 4, and is moved while moving in the scanning direction. An image is recorded in the width direction of the recording material. The sheet-like recording material conveyed by the paper feeding unit is supported from below by the platen 2, and the carriage 1 performs the same operation as described above to record an image in the width direction of the recording material.

(B) Paper Feed Unit A paper feed unit (not shown) is arranged upstream of the recording unit in the conveyance direction of the recording paper, and separates the recording paper one by one from the sheet-like recording paper bundle. Supply to the transport section.

(C) Conveying Unit FIG. 2 is a perspective view illustrating a drive train of the conveying mechanism. The transport unit is disposed downstream of the paper feed unit in the transport direction of the recording paper, and is configured to transport the recording paper fed from the paper feed unit with high accuracy. As shown in FIG. 2, the main mechanisms of the transport unit are respectively attached to the main side plate 15, the right side plate 16, and the left side plate 17.

  The transport unit transports the recording paper by the main transport roller 7 and the discharge roller 9. The main conveying roller 7 is configured by coating the surface of the metal shaft with ceramic fine particles, and the metal shaft portions at both ends thereof are rotatably supported by the right side plate 16 and the left side plate 17. A plurality of pinch rollers 8 are supported on the pinch roller holder 14. The pinch roller holder 14 is biased by a pinch roller spring (not shown), and presses the pinch roller 8 against the main transport roller 7 so as to be driven.

  The rotational force of the main conveyance roller 7 is transmitted to the pulley gear 21 provided on the shaft of the main conveyance roller 7 through the conveyance motor pulley 19 and the timing belt 20 as the driving force of the conveyance motor 18 composed of a DC motor. Has been obtained. A cord wheel 22 having slits formed at a pitch of 150 to 360 lpi is directly connected on the same axis as the main transport roller 7. A conveyance roller encoder sensor 23 for reading the number of times and timing at which the slit on the code wheel 22 passes is fixed to the left side plate 17.

  The pulley gear 21 has a pulley portion and a gear portion, and the driving force is transmitted from the gear portion to the paper discharge roller gear 25 via the idler gear 24, whereby the discharge roller 9 is driven. The discharge roller 9 is constituted by a rubber roller provided on a metal shaft. A plurality of spurs 10 are attached to a spur base 6 provided at a position facing the discharge roller 9. These spurs 10 are pressed against the discharge roller 9 by the urging force of a spur spring 26 constituted by a bar-shaped coil spring.

(D) Tray supply unit The tray supply unit supplies the disk tray 4 supporting the disk medium to the conveyance unit on the front surface of the recording apparatus, which is located downstream of the recording unit in the conveyance direction of the recording paper. Thus, the operability of the user is improved.

  The tray supply unit is not always located at the supply position, but is provided movably between the storage position shown in FIG. 1A and the supply position shown in FIG. When the tray supply unit is located at the storage position, the recording paper nipped and conveyed by the discharge roller 9 and the spur 10 is configured to pass below the disc tray base 3.

  When the tray supply unit is located at the supply position, the discharge roller 9 and the spur 10 are separated from each other, and the spur 10 is prevented from coming into contact with the disc medium supported by the disc tray 4 to be damaged. Yes.

  FIGS. 3A and 3B are cross-sectional views of a mechanism in which the tray supply unit switches between the storage position and the supply position.

  The disc tray base 3 constituting the tray supply unit is rotatably attached to the right side plate 16 and the left side plate 17, and can be switched from the storage position to the supply position by rotating the disc tray base 3. The arm 5 is attached to the disc tray base 3, and the lower part of the arm 5 is supported by the platen 2.

  As shown in FIG. 3A, by rotating the disc tray base 3, the arm 5 moves along the platen 2 in the conveying direction of the disc tray 4, and is formed on the spur base 6 in the middle. It contacts the protruding portion 6a. Subsequently, as shown in FIG. 3 (b), the arm 5 moves upward by sliding along the slope formed on the platen 2, and the arm 5 lifts the spur base 6, thereby causing the spur 10. Is separated from the discharge roller 9.

  FIG. 4 is a cross-sectional view for explaining the supply operation of the disc tray 4. FIG. 4A shows the storage position of the tray supply unit, and FIG. 4B shows the supply position of the tray supply unit. FIG. 4C shows a state in which the disc tray 4 is inserted into the tray supply unit at the supply position of the tray supply unit.

  As shown in FIGS. 4A and 4B, the spur 10 is retracted upward from the conveyance path by rotating the disc tray base 3 and switching to the supply position. Therefore, the disc tray 4 can be inserted into the tray supply port of the disc tray base 3 from the direction of the arrow shown in FIG.

  A disk roller holder 13 is attached to the chassis member 12 fastened to the right side plate 16 and the left side plate 17. A disk roller 11 as a pressure driven roller for holding and transporting the disk tray 4 is attached to the disk roller holder 13 together with a discharge roller 9 as a driving roller. The disk roller 11 is arranged at a position facing the discharge roller 9 on the upstream side in the transport direction of the disk tray 4 with the disk tray 4 interposed therebetween.

  The disk roller 11 is urged by a disk roller spring 30 as a pressure spring constituted by a rod-shaped coil spring. The disk roller spring 30 is elastically displaced when the disk tray 4 is conveyed, so that the disk roller 11 is pressed against the disk tray 4 inserted from the tray supply port by the urging force of the disk roller spring 30. Since the disc roller 11 is arranged with a position shifted upstream of the discharge roller 9 in the transport direction of the disc tray 4, the recording paper transport state and the transport state of the disc tray 4 are determined according to the disc tray base 3. It is possible to switch only by the operation of rotating the.

(Conveying disc tray 4)
The disc tray 4 inserted into the tray supply port of the disc tray base 3 is nipped by the discharge roller 9 and the disc roller 11 and is conveyed toward the inside of the recording apparatus by driving the discharge roller 9. Subsequently, the disc tray 4 is nipped between the main transport roller 7 and the pinch roller 8. At this time, the front end 28 of the disc tray 4 enters between the main conveying roller 7 and the pinch roller 8 and nips while lifting the pinch roller 8, so that the disc roller spring 30 can overcome the resistance generated at this time. It is necessary to set the pressing force. The disc tray 4 conveyed to a position where recording can be performed on the ink jet surface by the recording unit is conveyed with high accuracy in cooperation with the main conveyance roller 7 and the discharge roller 9 until the recording operation is completed. Then, after the recording operation is completed, the disc tray 4 is transported in the direction opposite to the transport direction of the disc tray 4 with respect to the recording unit using only the discharge roller 9 and is ejected from the inside of the recording apparatus.

  FIG. 5 is a plan view for explaining the positional relationship between the disc tray 4 and the disc roller 11. As shown in FIG. 5, the disc tray 4 has step-shaped portions 29 as concave portions having a depth (step amount) t in the thickness direction of the disc tray 4 at both ends in the width direction orthogonal to the transport direction. Is formed. The step-shaped portion 29 reduces the amount of displacement of the disk roller spring 30 that presses the disk roller 11 in an area where the disk roller 11 is in contact with the end of the downstream side in the transport direction of the disk tray 4 when the disk tray 4 is transported. Is formed for.

  The step-shaped portion 29 extends along the transport direction of the disc tray 4 and is formed so as to be positioned on the same straight line as the moving path of the disc roller 11 when the disc tray 4 is transported. Further, the depth t of the step-shaped portion 29 with respect to the direction orthogonal to the transport direction of the disc tray 4 is set larger than the displacement amount of the disc roller spring 30 when the disc tray 4 is transported.

  Further, when the disk roller 11 comes into contact with the disk medium immediately after the recording operation is completed, the ink of the disk medium is transferred to the disk roller 11. In order to prevent this, the disk rollers 11 are disposed at both ends in the width direction of the disk tray 4 so as not to contact the disk medium during the conveyance of the disk tray 4.

  Hereinafter, the details of the step-shaped portion 29 of the disc tray 4 will be described with reference to FIG. FIG. 6A shows a state in which the disc tray 4 is not inserted, and FIG. 6B shows a state during the supply and discharge operations by the discharge roller 9. Further, FIG. 6C shows a completion state of the disc tray 4 ejecting operation.

  When the disc tray 4 enters the disc roller 11, the disc roller spring 30 that biases the disc roller 11 is elastically displaced by a displacement amount t 'in the arrow Z direction shown in FIG. 6B. The step amount t of the step-shaped portion 29 with respect to the thickness direction of the disc tray 4 is formed to be greater than or equal to the displacement amount t ′ of the disc roller spring 30. With the above-described configuration, when the disc tray 4 is conveyed by the discharge roller 9 and the position of the stepped portion 29 reaches the disc roller 11, the displacement amount t ′ of the disc roller spring 30 becomes “0”. As a result, the conveying force of the disk roller 11 disappears, and thereafter, it becomes impossible to convey in the arrow Y1 direction shown in FIG.

  In addition, even when the manufacturing components vary in size and a conveying force in the direction of the arrow Y2 shown in FIG. 6C is generated, the disk roller is moved when the disk tray 4 moves in the Y2 direction. 11 cannot get over the end of the step-shaped portion 29. This can prevent the disc tray 4 from being conveyed in the Y2 direction.

  Further, as shown in FIG. 6C, the disc roller 4 is transported in the direction opposite to the transport direction of the disc tray 4 by the discharge roller 9 and the displacement amount of the disc roller spring 30 that presses the disc roller 11 is reduced. It is transported to the position where At this time, the length L ′ of the step-shaped portion 29 in the transport direction of the disc tray 4 is equal to the downstream end of the step-shaped portion 29 in the transport direction of the disc tray 4 (step start position P 1) and the carriage 1. It is smaller than the distance L between the upstream end of the disc tray 4 in the transport direction.

  When the disc roller spring 30 is transported to a position where the amount of displacement is reduced, the disc roller 11 enters the stepped portion 29, and the disc tray 4 stops after the disc tray 4 is ejected. It is. Further, the length L ′ of the step shape portion 29 in the transport direction of the disc tray 4 is the length L ′ of the step shape portion 29 formed along the transport direction of the disc tray 4 is the leading end 28 of the disc tray 4. And the step start position P1.

  Thus, even when the carriage 1 moves in the scanning direction with the disc tray 4 ejecting operation stopped, the carriage 1 and the disc tray 4 do not interfere with each other. It becomes movable.

  In the present embodiment, the disk roller 11 is pressed by the disk roller spring 30 configured by a bar-shaped coil spring as a method of pressing the disk roller 11, but the disk roller 11 is configured to be pressed by a torsion coil spring. Also good.

  In this embodiment, the disk roller 11 is attached to the chassis member 12. However, the disk roller 11 may be attached to the disk tray base 3. In the case of this configuration, the disc roller 11 is configured to be retracted from the recording paper conveyance path at the storage position.

  As described above, in this embodiment, the stepped portion 29 for reducing the displacement amount of the disk roller spring 30 is provided along the same straight line as the moving path of the disk roller 11 with respect to the disk tray 4. 4 is provided. Accordingly, it is possible to prevent the disk tray 4 from being pulled into the recording apparatus again without impairing the conveyance accuracy of the disk tray 4.

4 Disc tray 9 Discharge roller 11 Disc roller 27 Disc tray base roller 29 Step shape portion 30 Disc roller spring t Depth of step shape portion t 'Displacement amount of disc roller spring L Length of the step shape portion in the conveying direction L' Step The distance between the downstream end of the shape portion in the disc tray transport direction and the upstream end of the carriage in the transport direction of the disc tray

Claims (5)

A recording head for discharging liquid onto an information recording medium for recording an information signal;
A driving roller that supports and conveys a recording medium support member that supports the information recording medium;
A driven roller disposed upstream of the drive roller in the conveying direction of the information recording medium and supporting the recording medium support member together with the drive roller;
A pressure driven roller that is disposed at a position facing the drive roller on the upstream side in the transport direction with the recording medium support member interposed therebetween, and that transports the recording medium support member while sandwiching the drive roller;
A pressure spring that is elastically displaced when the recording medium support member is conveyed and presses the pressure driven roller against the recording medium support member; and the recording medium support member used in a recording apparatus,
A recess for reducing the amount of displacement of the pressure spring that presses the pressure driven roller in a region of the downstream end in the conveyance direction that is in contact with the pressure driven roller during conveyance of the recording medium support member Is provided along the transport direction.   2. The recording medium support member according to claim 1, wherein a depth of the recess with respect to a direction orthogonal to the transport direction is larger than a displacement amount of the pressure spring when the recording medium support member is transported.   A recording apparatus comprising the recording medium support member according to claim 1.   The recording apparatus according to claim 3, wherein the pressure driven roller is disposed at a position where it does not contact the information recording medium during conveyance of the recording medium support member. A carriage that supports the recording head and moves in a direction intersecting a conveyance direction of the information recording medium;
When the recording medium support member is transported in the direction opposite to the transport direction by the drive roller and transported to a position where the displacement amount of the pressure spring that presses the pressure driven roller is reduced, the concave portion 5. The length in the transport direction is shorter than a distance between an end portion of the concave portion on the downstream side in the transport direction and an end portion of the carriage on the upstream side in the transport direction. Recording device.

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