JP4506659B2 - Temporary storage device for long recording media - Google Patents

Description

  The present invention relates to a temporary storage device for a long recording medium in which a long recording medium to be conveyed is wound around a winding drum and temporarily stored, and the stored recording medium is fed out.

  Conventionally, as described in Patent Document 1, a long recording medium temporary storage device that temporarily retains a photosensitive material as a long recording medium between an exposure unit and a development processing unit of a photographic processing apparatus The one provided with a loop portion has been proposed.

  The loop portion absorbs a difference in transport speed between the exposure portion and the development processing portion with respect to the photosensitive material, and avoids occurrence of image disturbance due to vibration or load fluctuation in the photosensitive material during exposure. Provided between the first transport system that transports the material and the second transport system that transports the photosensitive material to the development processing section, each transport system is controlled so that the loop amount is within a predetermined range, and the exposure section When the frame exposure processing is completed and the first transport system is stopped, the photosensitive material is cut by a cutter provided on the exposure portion side from the loop portion.

JP 2000-155402 A

  However, according to the above-mentioned temporary storage device for long recording media, there is a problem that the photographic processing device becomes large in order to secure a large space for loop formation, and paper dust and dust collected at the bottom of the loop portion. If the complicated cleaning operation of removing the toner is not performed, the rear end portion of the photosensitive material that hangs down after the cutting contacts the bottom portion, and paper dust or the like adheres to the photosensitive material. There is a problem that not only the fear increases but the deterioration of the developer progresses.

  Therefore, in order to eliminate a large space where a loop portion is required, a long recording medium is temporarily stored by winding a long recording medium to be conveyed around a winding drum and feeding out the stored recording medium. However, if the trailing end of the recording medium hangs down when the wound recording medium is fed out, the same problem as described above may occur.

  An object of the present invention is to provide a temporary storage device for a long recording medium in which the recording medium is not damaged by paper dust or dust while the size of the apparatus is reduced in view of the conventional problems described above. It is in.

  In order to achieve the above-mentioned object, the first characteristic configuration of the long recording medium temporary storage device according to the present invention is a long recording medium conveyed as described in claim 1 of the document of the claims. Is a temporary storage device for a long recording medium that is wound around a winding drum and temporarily stores the recording medium, and is arranged so as to rotate integrally with the winding drum. A posture switching mechanism that switches a pressure-bonding portion that sandwiches the leading end of the recording medium between a pressure-bonded state and a non-pressure-bonded state, and the pressure bonding by the posture switching mechanism when the winding drum rotates in the winding direction. The pressure switching state by the posture switching mechanism is permitted when the posture switching to the state is allowed and when the winding length of the recording medium is equal to or less than a predetermined length when the winding drum rotates in the feeding direction. From non In point configured with an attitude switching control mechanism that allows the attitude switching to wearing state.

  When the recording medium is wound around the take-up drum, the pressure-bonding portion that rotates integrally with the take-up drum is switched in the pressure-bonded state by the posture switching mechanism, so that the leading end of the recording medium is moved between the take-up drum and the pressure-bonded portion. It is pinched between and wound in that state. Thereafter, when the winding drum rotates in the feeding direction and the recording medium is fed, the recording medium is fed while the pressure-bonding state is maintained by the posture switching control mechanism, and the winding length of the recording medium becomes equal to or less than a predetermined length. The posture is switched to the non-crimped state by the posture switching mechanism. Therefore, by setting the predetermined length to a length that does not come into contact with the paper dust accumulated in the apparatus, the recording medium can be sent out to the subsequent stage without being damaged by the paper dust. According to this configuration, it is not necessary to secure a large loop formation space, and the apparatus can be downsized.

  In addition to the first feature configuration described above, the second feature configuration includes a biasing mechanism that biases the pressure-bonding portion to the winding drum, in addition to the first feature configuration described above. The pressure-bonding portion accompanying the rotation of the winding drum in the winding direction is guided to the pressure-bonded state by the biasing mechanism, and the pressure-bonding portion accompanying the rotation of the winding drum in the feeding-out direction is the biasing mechanism. The cam mechanism is configured to guide the crimping portion in a diametrical direction of the take-up drum and an end portion of the support portion. The cam surface is provided with a cam surface that moves the crimping portion in the radial direction along with the rotation of the winding drum, and is constituted by a cam plate provided on a fixed axis that supports the winding drum. is there.

  According to the above-described configuration, the crimping portion is biased in the radial direction of the winding drum by the biasing mechanism, so that the end of the support portion approaches the winding drum as the end of the supporting portion slides on the cam surface. In this way, the recording medium reaches the pressure-bonding state or is separated and reaches the non-pressure-bonding state. For example, the peripheral speed of the winding drum is rotated in the winding direction at a speed close to the conveying speed of the recording medium. The crimping state can be released by rotating the winding drum in the feeding direction.

  In the third feature configuration, as described in claim 3, in addition to the second feature configuration described above, the posture switching control mechanism includes a cam groove formed on a side surface of the cam plate, and one end of the cam switch. A connecting pin attached via a biasing member to the cam plate so that the other end rotates integrally with the take-up drum and the other end engages with the cam groove, and the cam plate can be rotated with respect to the fixed axis. A torque limiter that supports the first cam, and the cam groove allows the attitude of the connecting pin to slide into the pressure-bonded state when the winding drum rotates in the winding direction. A groove formed deeper than the first cam groove and engaged with the connecting pin when the winding drum is rotated in the winding direction to engage with the connecting pin when the winding plate rotates in the winding direction. While rotating integrally with the winding drum, the winding drum A second cam groove that engages with the connecting pin during rotation of the take-up drum and rotates the cam plate integrally with the take-up drum, and the second cam accompanying rotation of the take-up drum in the take-up direction. Engaging in the start end formed deeper than the groove, the end is formed gradually shallower so as to be continuous with the first cam groove, and the connecting pin slides when the winding drum rotates in the unwinding direction. It is in the point comprised by the 3rd cam groove which accept | permits the attitude | position switch to a state.

  When the winding drum rotates in the winding direction of the recording medium, the connecting pin slides along the first cam groove. At this time, since the torque applied to the cam plate is small, the fixed state is maintained on the fixed shaft center, and the end of the support portion slides along the cam surface of the cam plate, so that the pressure-bonded portion switches to the pressure-bonded state. Is done. Thereafter, the connecting pin that engages with the second cam groove engages with the edge of the second cam groove, and the torque of the winding drum that rotates in the winding direction is applied to the cam plate via the connecting pin. As the cam plate rotates integrally with the take-up drum by the action of the limiter, the recording medium is taken up while the pressure-bonded state is maintained.

  When the wound recording medium is fed from the take-up drum, a step is formed in the first cam groove and the second cam groove, so that the connecting pin does not return to the first cam groove and faces the second cam groove. The torque of the take-up drum that rotates in the feeding direction is applied to the cam plate through the connecting pin, and the cam plate rotates integrally with the take-up drum by the action of the torque limiter. Is maintained while the recording medium is fed out.

  When the winding length of the recording medium becomes equal to or shorter than the predetermined length, the connecting pin is engaged with the third cam groove when the winding drum is rotated in the winding direction. Thereafter, when the winding drum is rotated in the feeding direction, a step is formed in the second cam groove and the third cam groove, so that the connecting pin slides along the third cam groove without returning to the second cam groove. . At this time, since the torque applied to the cam plate is small, the fixed state is maintained on the fixed axis, and the end of the support portion slides along the cam surface of the cam plate so that the crimped portion is brought into a non-crimped state. As a result, the connecting pin returns from the third cam groove to the first cam groove.

  As described above, according to the present invention, it is possible to provide a temporary storage device for a long recording medium in which the recording medium is not damaged by paper dust or dust while the apparatus is downsized. became.

  A photographic processing apparatus provided with a temporary storage device for a long recording medium according to the present invention will be described below.

  As shown in FIG. 2, the photographic processing apparatus is fed out of two photographic paper magazines 10 containing photographic paper P as a long recording medium wound in a roll shape, and the photographic paper magazine 10. A sheet cutter 20 for cutting the photographic paper P into a predetermined print size, an exposure unit 30 provided with an exposure head for exposing the photographic paper P, and a photographic paper edge detection sensor 76 for detecting the leading edge and the trailing edge of the photographic paper P. A loop unit 40 for avoiding image disturbance due to vibration and load fluctuations in the photosensitive material during exposure, a developing unit 50 for developing the exposed photographic paper P, and the photographic paper P to the developing unit 50 A pre-development transport unit 90 for transporting the image paper is disposed along the transport path of the photographic paper P, and a temporary storage device 60 according to the present invention is provided between the exposure unit 30 and the development unit 50.

  The exposure unit 30 outputs RGB three-color laser beam bundles modulated on the basis of print data in the main scanning direction orthogonal to the conveyance direction with respect to the photographic paper P conveyed in the sub-scanning direction along the conveyance path. An exposure head 31 for exposure is accommodated.

  The developing unit 50 includes a processing tank 51 including a plurality of tanks for storing a developing processing solution for developing, bleaching, and fixing photographic paper after exposure, a bleach-fixing processing solution, and a stabilizing processing solution. The treatment tank 51 is divided into a plurality of partitions by partition walls 52.

  The photographic paper P accommodated in the photographic paper magazine 10 is pulled out by a pickup roller (not shown), and is conveyed by a plurality of pairs of conveyance rollers arranged along the conveyance path of the photographic paper P indicated by a one-dot chain line in FIG. The photographic paper P is cut to a predetermined print size by the sheet cutter 20 and then conveyed to the exposure unit 30, and the photographic paper P exposed by the exposure unit 30 is conveyed to the temporary storage device 60.

  As shown in FIG. 1, the temporary storage device 60 wraps and temporarily stores a pair of receiving rollers 61 for receiving photographic paper and the photographic paper P to be conveyed, and stores the photographic paper P that has been accommodated in the pre-development conveyance unit 90. A take-up drum 62 that is fed out, a receiving roller position switching mechanism (not shown) that switches the position of the receiving roller, and a position switching mechanism 70 that switches the position of the winding drum 62. .

  More specifically, an idle roller as a pressure-bonding portion 63 that is disposed so as to rotate integrally with the winding drum 62 and sandwiches the leading end of the photographic paper P with the winding drum 62 is in a pressure-bonded state. And a posture switching mechanism 64 that switches between the non-crimping state and a posture switching mechanism 64 that allows the posture switching mechanism 64 to switch to the crimping state when the winding drum 62 rotates in the winding direction. A posture that allows the posture switching mechanism 64 to switch the posture from the crimped state to the non-crimped state when the wrapping length of the photographic paper P is equal to or less than a predetermined length when rotating in the feeding direction. A switching control mechanism 65 (not shown in FIG. 1 and described later) is provided.

  The posture switching mechanism 64 includes an urging mechanism 66 that urges the pressure-bonding portion 63 to the winding drum 62 and the urging force of the pressure-bonding portion 63 when the winding drum 62 rotates in the winding direction. It is constituted by a cam mechanism 67 that is guided to the crimped state by a mechanism 66 and guides the crimped portion 63 to the non-crimped state against the biasing mechanism 66 as the winding drum 62 rotates in the feeding direction. .

  The cam mechanism 67 has a support portion 67a that supports the crimping portion 63 movably in the radial direction of the take-up drum 62, and an end portion of the support portion 67a is in contact with the rotation of the take-up drum. And a cam surface 67b for moving the crimping portion 63 in the radial direction, and a cam plate 67c provided on a fixed axis 68 for supporting the take-up drum 62.

  More specifically, the cam mechanism 67 is covered with a cam mechanism covering portion 80 as shown in FIG. 3, and the cam mechanism covering portion 80 is positioned at both ends of the winding drum 62 as shown in FIG. And is supported by the fixed axis 68.

  As shown in FIG. 3, the cam mechanism covering portion 80 has a through hole 801 in a portion corresponding to a side surface portion of a cylinder, and as shown in FIGS. 4 and 5, the support portion 67 a is inserted into the penetrating hole. By making contact with the cam surface 67b through the hole 801, it is possible to switch between the crimping state and the non-crimping state of the crimping part 63 as described above.

  The switching between the crimping state and the non-crimping state will be specifically described. As shown in FIG. 6, in FIG. 6A, the gap between the surface portion of the winding drum 62 and the surface portion of the pressure-bonding portion 63 is A, that is, a non-pressure-bonded state. Here, as indicated by a one-dot chain line arrow in FIG. 6A, when the winding drum 62 rotates in the winding direction, the pressure-bonding portion 63 and the support portion 67 a rotate integrally with the winding drum 62. At this time, since the torque applied to the cam plate 67c is small, the cam plate 67c remains fixed to the fixed axis 68, and the end portion of the support portion 67a slides along the cam surface 67b of the cam plate 67c. Move. As a result, the state shown in FIG. In FIG. 6B, there is no gap between the surface portion of the winding drum 62 and the surface portion of the pressure-bonding portion 63, that is, a pressure-bonded state. This is because the difference between the cam surface 67b of the cam plate 67c and the outer periphery 67d of the cam is B at the shallowest portion, whereas it is C at the deepest portion. When moving from the position shown in FIG. 6 (a) to the position shown in FIG. 6 (b), the crimping part 63 is the winding drum 62 by the difference D (= CB) between the deepest part and the shallowest part. It approaches to the surface part. That is, by making the difference D equal to the gap A, the crimping portion 63 can be switched between the crimped state and the non-crimped state.

  In the above description, the cam mechanism covering portion 80 is provided and the through hole 801 is formed in the cam mechanism covering portion 80. However, the cam mechanism covering portion 80 is integrated with the winding drum 62, and The winding drum 62 may have a through hole.

  As shown in FIGS. 5 and 7, the posture switching control mechanism 65 includes a cam groove 651 (shaded portion in FIG. 7) formed on a cylindrical bottom surface (upper surface) portion of the cam plate 67 c, and one end of the winding switching control mechanism 65. A connecting pin 652 that rotates integrally with the drum 62 and the cam mechanism covering portion 80 and is attached to the cam groove 651 so that the other end engages with the cam groove 651, and the cam plate 67c is connected to the fixed axis. 68 and a torque limiter 653 that is rotatably supported with respect to 68.

  As shown in FIG. 8, the cam groove 651 has a first cam groove 651a that allows the connecting pin 652 to slide when the winding drum 62 rotates in the winding direction and to switch the posture to the crimped state. And is formed deeper than the first cam groove 651a, engages with the switching of the posture to the crimped state, and engages with the connecting pin 652 when the winding drum 62 rotates in the winding direction. While the plate 67c is rotated integrally with the winding drum 62, the cam plate 67c is rotated together with the winding drum 62 by engaging with the connecting pin 652 when the winding drum 62 rotates in the feeding direction. The second cam groove 651b is engaged with the start end formed deeper than the second cam groove 651b as the winding drum 62 rotates in the winding direction, and the end is connected to the first cam groove 651a. Is gradually shallow, the connection pin 652 during rotation of the feeding direction of the winding drum is constituted by a third cam groove 651c which allows the posture switching of the slides the the non-crimped state.

  Further, the boundary between the first cam groove 651a and the third cam groove 651c constitutes a step. That is, as shown in FIG. 9, among the cam grooves 651 indicated by diagonal lines, the first cam groove 651a is configured to be higher than the second cam groove 651b at the step ab, and the second cam groove 651b. Is configured to be higher than the third cam groove 651c at the step bc, and the third cam groove 651c formed gradually shallower is configured to be higher than the first cam groove at the step ca. Further, the second cam groove is divided into two regions by a step bb, and the region on the first cam groove 651a side is configured to be higher than the region on the third cam groove 651c side. That is, the sliding order of the connecting pin 652 is the order of returning to the first cam groove 651a, the second cam groove 651b, the third cam groove 651c, and the first cam groove 651a again, and in the reverse order. It does not move.

  The specific operation described above will be described in detail with reference to FIGS. First, as shown in FIG. 10, when the photographic paper P is inserted, the winding drum 62 rotates in the winding direction of the photographic paper P, and the connecting pin 652 that rotates integrally with the winding drum 62 is the first. It slides along the cam groove 651a. At this time, since the torque applied to the cam plate 67c is small, the cam plate 67c is kept fixed to the fixed axis 68, and the end portion of the support portion 67a slides along the cam surface 67b of the cam plate 67c. By doing so, the posture of the crimping portion 63 is switched to the crimped state (FIG. 11).

  At this time, as shown in FIGS. 9 and 12, the connecting pin 652 engages with the edge of the second cam groove 651b after passing through the step ab, and the winding drum 62 rotates in the winding direction. Torque is applied to the cam plate 67c through the connecting pin 652, and the cam plate 67c rotates together with the take-up drum 62 and the pressure-bonding portion 63 by the action of the torque limiter 653 so that the pressure-bonded state is maintained and the photographic paper is maintained. P is wound up. In the second and subsequent rounds when the photographic paper P is wound up, the winding drum 62 and the pressure-bonding portion 63 are in a pressure-bonded state and there is no gap between them, so as shown in FIG. P is wound on the outer peripheral side of the crimping part 63.

  Next, when the wound photographic paper P is fed out from the winding drum 62 (the winding drum 62 rotates in the direction opposite to the winding direction), as shown in FIGS. Since the step ab is formed in the groove 651a and the second cam groove 651b, the connecting pin 652 does not return to the first cam groove 651a, but conversely faces the second cam groove 651b via the step bb. Engage with the edge to be.

  Then, after the connecting pin 652 is engaged with the opposing edge of the second cam groove 651b, the torque of the winding drum 62 rotating in the feeding direction causes the connecting pin 652 to rotate as shown in FIG. The cam plate 67c is fed together with the winding drum 62 and the pressure-bonding portion 63 by the action of the torque limiter 653, so that the photographic paper P is fed out while maintaining the pressure-bonded state.

  When the winding length of the photographic paper P becomes equal to or less than the predetermined length, the winding drum 62 is once rotated reversely in the winding direction as shown in FIGS. Then, the connecting pin 652 is engaged with the third cam groove 651c via the step bc. Since the connecting pin 652 is blocked by the step bb, it does not return to the region of the second cam groove 651b that is in contact with the first cam groove 651a.

  Thereafter, when the winding drum 62 is rotated again in the feeding direction, a step bc is formed in the second cam groove 651b and the third cam groove 651c, as shown in FIG. Slides along the third cam groove 651c without returning to the second cam groove 651b. At this time, since the torque applied to the cam plate 67c is small, the cam plate 67c is kept fixed to the fixed axis 68, and the end of the support portion 67a extends along the cam surface 67b of the cam plate 67c. By sliding, the posture of the crimping part 63 is switched to the non-crimping state. The connecting pin 652 returns from the third cam groove 651c to the first cam groove 651a.

  The temporary storage device 60 switches between a first position 70a as a normal position of the winding drum 62 shown in FIG. 1 and a second position 70b as a retracted position of the winding drum 62 shown in FIG. A switching mechanism 70 is provided, and winding of the photographic paper P is started at the first position 70a, and feeding of the photographic paper P taken up at the second position 70b is started.

  Further, as shown in FIG. 17, the receiving roller 61 also includes a receiving position 61 a for sending the photographic paper P from the exposure unit 30 to the winding drum 62, and a pre-development conveyance unit 90 from the winding drum 62. A receiving roller position switching mechanism (not shown) for switching the position to the sending position 61b to be sent to is provided.

  Specifically, the position switching mechanism 70 is provided so as to be interlocked with the drum position switching drive unit 71 integrally attached to both ends of the winding drum 62 and the driving of the drum position switching drive unit 71. For moving the conveyor belt 72, the gear 73 provided at the upper and lower parts of the temporary storage device 60 as the end of the operation of the conveyor belt 72, the winding drum 62 and the drum position switching drive unit 71. And a slider 74 attached to the drum position driving unit 71. As an operation, for example, when the drum position switching drive unit 71 is driven when the winding drum 62 is positioned at the normal position of the temporary storage device 60 as shown in FIG. By moving up and down about the gear 73 as both end shafts, the winding drum 62 and the drum position switching drive unit 71 move along the slider 74. As a result, as shown in FIG. The drum position switching drive unit 71 moves to the retracted position of the temporary storage device 60.

  Hereinafter, an operation from when the temporary storage device 60 stores the photographic paper P exposed by the exposure unit 30 to when the stored photographic paper P is delivered to the pre-development conveyance unit 90 will be described.

  As shown in FIG. 2, a photographic paper edge detection sensor 76 is provided on the conveyance path of the photographic paper P of the photographic processing apparatus, and the leading edge of the photographic paper P is detected by the photographic paper edge detection sensor 76. The photographic processing apparatus recognizes the leading edge of the photographic paper P. Then, as shown in FIG. 1, when the exposed photographic paper P is inserted into the temporary storage device 60 via the receiving roller 61, the photographic processing device causes the pressure-bonding portion 63 to be pressure-bonded to the take-up drum 62. In order to fix the photographic paper P, the support portion 67a is slid on the cam surface 67b. Note that the position of the photographic paper edge detection sensor 76 is not limited to the position shown in FIG. 2 as long as it is in the conveyance path of the photographic paper P and before the temporary storage device 60.

  As shown in FIG. 18, when the photographic paper P is fixed between the winding drum 62 and the pressure-bonding portion 63, the winding drum 62 is positioned at the normal position of the temporary storage device 60 as shown in FIG. 19. Starts to move to the retracted position.

  As shown in FIG. 20, when the take-up drum 62 reaches the retracted position of the temporary storage device 60, the operation of the take-up drum 62 stops, but the photographic paper P is further fed through the receiving roller 61. As it comes, the slack of the photographic paper P becomes larger.

  As shown in FIG. 21, the temporary storage device 60 is provided with a photographic paper slack detection sensor 75 comprising a light projecting portion and a light receiving portion. When the light path is interrupted and the light from the light projecting unit does not reach the light receiving unit, the photo processing apparatus starts the winding operation of the winding drum 62.

  As shown in FIG. 22, when the photographic paper P is wound by the winding operation of the winding drum 62, when light from the light projecting portion of the photographic paper slack detection sensor 75 reaches the light receiving portion, The photographic processing device stops the winding operation of the winding drum 62.

  During the winding operation of the winding drum 62, the winding drive of the winding drum 62 is performed by the detection of the above-described sag paper detection sensor 75, and the winding of the winding drum 62 is stopped by non-detection. Continue the process.

  When the trailing edge of the photographic paper P is detected by the photographic paper edge detection sensor 76, the photographic processing apparatus takes up the winding drum 62 immediately before the trailing edge of the photographic paper P passes through the receiving roller 61. Stop operation. When the winding operation is stopped, as shown in FIG. 17, the receiving roller 61 switches the position from the receiving position 61a to the sending position 61b.

  Thereafter, the take-up drum 62 starts a feeding operation, and the fed printing paper P is sent to the pre-development conveyance unit 90 via the receiving roller 61 as shown in FIG.

  As an operation for feeding the leading end of the photographic paper P, the winding drum 62 moves the temporary storage device 60 from the retracted position to the normal position after all of the photographic paper P that has been wound is fed. The operation opposite to that in FIG. 19 is started.

  When the take-up drum 62 reaches the normal position of the temporary storage device 60, the photographic processing device releases the pressure-bonding of the pressure-bonding portion 63 to the take-up drum 62 to release the fixing of the photographic paper P. The support portion 67a is slid on the cam surface 67b. When the pressure bonding is released and all of the photographic paper P is delivered to the pre-development conveyance unit 90, the receiving roller 61 switches the position from the sending position 61b to the receiving position 61a.

  Hereinafter, another embodiment will be described. In the above-described embodiment, the configuration in which the winding drum 62 is retracted from the normal position of the temporary storage device 60 to the retracted position has been described, but the configuration in which the winding drum 62 is not retracted may be used.

  For example, the trailing edge of the photographic paper P is detected by the photographic paper edge detection sensor 76 until the photographic paper P is pressure-bonded to the winding drum 62, that is, the state shown in FIG. When it is no longer necessary to wind up the photographic paper P, the position of the receiving roller 61 can be changed as shown in FIG. 24 without retracting the winding drum 62 to the retracted position of the temporary storage device 60. It is switched from the position 61a to the sending position 61b.

  In this embodiment, when the photographic paper P is longer than a predetermined length, the winding drum 62 is retracted to the retracted position, and when the photographic paper P is shorter than the predetermined length, the winding is performed. A configuration in which the take-up drum 62 is not retracted, that is, whether or not it is retracted may be selected depending on the length of the photographic paper P may be employed.

  In the above-described embodiment, the configuration using the idler roller as the pressure-bonding portion 63 has been described, but the pressure-bonding portion 63 is not limited to the roller shape. For example, as shown in FIG. 25, the pressure-bonding portion 63 is replaced with an idle roller, and a concave portion is provided at both ends of the take-up drum 62 so as to sandwich the print paper P and the take-up drum. May be provided.

  Note that the above-described embodiment is merely an example of the present invention, and it is needless to say that the specific configuration of each block can be changed and designed as appropriate within the scope of the effects of the present invention.

Explanatory drawing of the functional block configuration of the temporary storage device Explanatory drawing of functional block configuration of photo processing device Perspective view of cam mechanism cover Overview of posture switching mechanism Front view of winding drum end for explanation of contact between crimping part and cam surface and explanation of attitude switching control mechanism (A) shows a non-crimped state, (b) is a cross-sectional view of a posture switching mechanism showing a crimped state Perspective view of posture switching mechanism and cam plate for explaining posture switching control mechanism Top view of cam plate for explaining cam groove A perspective view of a cam plate for explaining a cam groove It is a front view of the attitude | position switching mechanism for demonstrating operation | movement of an attitude | position switching control mechanism, and the state immediately after a printing paper insertion start. It is a front view of the attitude | position switching mechanism for demonstrating operation | movement of an attitude | position switching control mechanism, and the state by which the crimping | compression-bonding part was attitude-switched to the crimping | compression-bonding state. It is a front view of the attitude | position switching mechanism for demonstrating operation | movement of an attitude | position switching control mechanism, and is in the state in winding of photographic paper. It is a front view of the attitude | position switching mechanism for demonstrating operation | movement of an attitude | position switching control mechanism, and the state which the connection pin is moving in order to pay out photographic paper. FIG. 6 is a front view of the posture switching mechanism for explaining the operation of the posture switching control mechanism, in a state in which photographic paper is being fed out. It is a front view of the posture switching mechanism for explaining the operation of the posture switching control mechanism, and the state where the connecting pin is moving to switch the posture of the crimping portion to the non-crimping state It is a front view of the posture switching mechanism for explaining the operation of the posture switching control mechanism, and the crimping part is in the posture switching state to the non-crimping state Front view of temporary storage device for explaining operation of receiving roller It is a front view of the temporary storage device for explaining the operation of the winding drum and the receiving roller, in a state where the photographic paper is fixed It is a front view of the temporary storage device for explaining the operation of the winding drum and the receiving roller, and the winding drum is moving to the retracted position It is a front view of the temporary storage device for explaining the operation of the winding drum and the receiving roller, and the winding drum has reached the retracted position It is a front view of the temporary storage device for explaining the operation of the winding drum and the receiving roller, and the optical path of the photographic paper looseness detection sensor is blocked by the photographic paper It is a front view of the temporary storage device for explaining the operation of the winding drum and the receiving roller, and the winding drum is winding the photographic paper It is a front view of a temporary storage device for explaining operation of a winding drum and a receiving roller, and a state where the winding drum is feeding photographic paper Explanatory drawing of embodiment in which a receiving roller switches the position to a sending position, without retracting a winding drum. Explanatory drawing of embodiment using the photographic paper fixing | fixed part for fixation of photographic paper

Explanation of symbols

60: Temporary storage device 61: Receiving roller 62: Winding drum 63: Crimping unit 64: Posture switching mechanism 65: Posture switching control mechanism 651: Cam groove 67: Cam mechanism 71: Drum position switching drive unit 75: Detection of slack in photographic paper Sensor 76: photographic paper edge detection sensor

Claims (3)

A long recording medium is temporarily stored by winding a long recording medium to be wound around a winding drum and feeding out the stored recording medium.
A posture switching mechanism that is arranged so as to rotate integrally with the winding drum, and switches a pressure-bonding portion that sandwiches the leading end of the recording medium between the winding drum and either a pressure-bonded state or a non-pressure-bonded state. And allowing the posture switching mechanism to switch the posture to the pressure-bonded state when the winding drum rotates in the winding direction, and winding the recording medium when rotating the winding drum in the feeding direction. Temporary storage of a long recording medium comprising a posture switching control mechanism that allows posture switching from the pressure-bonded state to the non-crimped state by the posture switching mechanism when the length becomes a predetermined length or less. apparatus.   The posture switching mechanism urges the pressure-bonding part to the winding drum, and the pressure-bonding part is brought into the pressure-bonded state by the biasing mechanism as the winding drum rotates in the winding direction. And a cam mechanism that guides the crimping portion to the non-crimping state against the biasing mechanism as the winding drum rotates in the feeding direction, and the cam mechanism guides the crimping portion to the winding. A support portion that is movably supported in the radial direction of the take-up drum; and a cam surface that contacts the end of the support portion and moves the pressure-bonding portion in the radial direction as the take-up drum rotates. The temporary storage device for a long recording medium according to claim 1, comprising a cam plate provided on a fixed axis supporting the winding drum.   The posture switching control mechanism includes a cam groove formed on a side surface of the cam plate, and an urging toward the cam plate so that one end rotates integrally with the winding drum and the other end engages with the cam groove. A connecting pin attached via a member, and a torque limiter that rotatably supports the cam plate with respect to the fixed axis, wherein the cam groove extends in the winding direction of the winding drum. A first cam groove that allows the posture switching to the crimped state when the connecting pin slides during rotation, and is formed deeper than the first cam groove, and is engaged with the posture switching to the crimped state. When the winding drum rotates in the winding direction, it engages with the connecting pin to rotate the cam plate integrally with the winding drum, while the winding drum rotates when the winding drum rotates in the feeding direction. The cam plate A second cam groove that rotates integrally with the winding cam and a start end formed deeper than the second cam groove with rotation of the winding drum in the winding direction so that the end is connected to the first cam groove. 3. The third cam groove according to claim 2, wherein the third cam groove is formed so as to be gradually shallower and allows the connection pin to slide to allow the posture switching to the non-crimping state when the winding drum rotates in the feeding direction. Temporary storage device for long recording media.

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