JP4304591B2 - Photosensitive material transport structure - Google Patents

Description

  The present invention relates to a pre-conveying mechanism that sends a photosensitive material cut into a print size in a single row, a distribution mechanism that distributes the photosensitive material from the pre-conveying mechanism to a plurality of distribution paths, and a photosensitive material from the distribution mechanism In particular, the present invention relates to a photosensitive material conveyance structure including a post-conveying mechanism that conveys the photosensitive material along the plurality of distribution paths, and more specifically, a technique for conveying the distributed photosensitive material by an independent pressure-bonding roller for each distribution path. About.

  As a photosensitive material transport structure configured as described above, there is a technique disclosed in Patent Document 1 below. In this technique, after printing processing is performed on the photographic paper (photosensitive material of the present invention) cut to a print size, the photographic paper is transferred from the carry-in side conveyance means (pre-conveyance mechanism of the present invention) to the sorting unit ( (The sorting mechanism of the present invention) is sent to a path of two rows, and the photographic paper sorted in this process is sent to the aligning means (the post-transporting mechanism of the present invention) so that the tip position is orthogonal to the transport direction. It is configured to send it out after aligning it with a line in the direction of movement. In this technique, the distribution unit is configured to include a distribution box that is movable in a direction perpendicular to the conveyance direction of the photographic paper and that has a plurality of roller pairs that allow passage of the photographic paper inside. . Further, when sorting is performed with this sorting box, the printing paper sent in a single row is sent into the sorting box at the home position, and the sorting box is shifted. Further, the aligning means includes a roller pair composed of a pressure-conveying-type conveying roller and a pressure-bonding roller disposed over the entire distribution width on the introduction side, and is disposed over the entire distribution width on the downstream side. And a pair of roller pairs including a feed roller having a one-way clutch on the drive shaft and a pair of pressure-bonding rollers arranged corresponding to the distribution path.

  Then, the aligning means sends the photographic paper distributed to one side to the downstream side via the conveying roller and the pressure roller, so that the one-way clutch allows the rotation of the feed roller. The photographic paper is received between the rollers, and the same operation is performed on the photographic paper distributed to the other side, so that the photographic paper is held in a state where the leading ends are aligned. . After holding the photographic paper in this way, the photographic paper can be sent out in a parallel positional relationship by rotating the feed roller (see, for example, Patent Document 1).

JP-A-7-120904 (paragraph numbers [0021] to [0034], FIGS. 2 to 5)

  As described in Japanese Patent Application Laid-Open No. H11-228707, the development processing after the photosensitive material after exposure is distributed to a plurality of distribution paths is effective for improving the processing efficiency in the development processing section. In addition, considering that the photosensitive material after sorting is conveyed by a pressure-sensitive roller, the pressure-sensitive roller is in a state in which the entire width of the photosensitive material is surely pressure-bonded. is important. In this regard, Patent Document 1 adopts a structure in which a pair of pressure-bonding rollers arranged corresponding to the distribution path is pressed against a single feed roller by a spring, so that the distributed photosensitive material has a width. It is surely transported by receiving the average pressing force in the direction.

  Considering that the number of pressure-bonding rollers corresponding to the number of distribution paths is provided, each roller needs to be pressure-bonded equally in the axial direction with respect to the opposite drive-side roller. However, in the case where a spring is provided at both ends of the roller, as described in Patent Document 1, one crimping force in the axial direction may be stronger than the other due to individual differences of each spring, mounting accuracy, and the like. Yes, there is room for improvement in terms of transporting in an appropriate crimped state. In consideration of the arrangement of the driving roller and the pressure-bonding roller, the rollers need to be arranged in parallel with each other. However, like what is described in Patent Document 1, the driving-side roller is configured as a single unit that traverses a plurality of conveyance paths, and a roller that presses the driving-type roller is provided for each distribution path. In this case, since the roller on the pressure bonding side is shorter than the roller on the driving side, it is difficult to set the axis posture. If the axes of the rollers cannot be set parallel to each other, the force for crimping the photosensitive material is biased and not surely conveyed, and the photosensitive material is moved away from the predetermined distribution path. There is room for improvement because it may lead to inconvenience of transporting and meandering of the photosensitive material.

  An object of the present invention is to obtain a photosensitive material conveyance structure that reliably conveys a distributed photosensitive material to a distribution path.

A feature of the present invention is that a pre-conveying mechanism that sends a photosensitive material cut into a print size in a single row, a distribution mechanism that distributes the photosensitive material from the pre-conveying mechanism to a plurality of distribution paths, and a distribution mechanism from the distribution mechanism A photosensitive material transport structure including a post-transport mechanism that transports the photosensitive material along the plurality of distribution paths, wherein the post-transport mechanism is disposed at a position that crosses the plurality of distribution paths. A pressure roller disposed at each of the positions corresponding to the distribution path, and the pressure roller is loosely supported by a movable frame, and the movable frame has a center in the axial direction of the pressure roller. in part, the shaft body arranged on the support axis of orientation perpendicular to the drive axis of the drive roller is supported swingably around the support shaft axis, and, before the biasing means Is biased to the side of the drive roller, wherein the sorting mechanism, the a sorting mode for distributing the photosensitive material to the plurality of distribution paths, a single conveyor to send on the extension of the transport path of the photosensitive material before transporting mechanism The post-conveying mechanism presses the photosensitive material sent in the sorting mode with a corresponding pressure roller, and adjoins the photosensitive material sent in the single transport mode. It exists in the point comprised so that crimping | compression-bonding is possible with a pressurizing roller .

With this configuration, the pressure roller is pressure-bonded to the driving roller by the urging force from the urging means acting on the movable frame. Therefore, compared to the roller having both ends of the pressure roller, a distributed photosensitive is provided. The material can be pressure-bonded with a balanced pressure in the axial direction of the pressure roller (in the width direction of the photosensitive material). Further, since the movable frame is supported so as to be swingable around the support shaft core, the shaft core of the pressure roller supported by the movable frame is driven by the drive shaft of the drive roller in the same manner as the caster by the swing of the movable frame. It is possible to maintain the positional relationship parallel to the core. As a result, the photosensitive material can be uniformly pressed by the driving roller and the pressure roller, and the photosensitive material can be properly conveyed along the sorting path. Also, in the sorting mode, when the photosensitive material sent from the front transport mechanism is delivered to the rear transport mechanism in a distributed form, the photosensitive material can be transported by pressure bonding with the corresponding pressure roller and drive roller. . Further, in the single transport mode, when the photosensitive material is delivered to the rear transport mechanism in a form in which the photosensitive material is sent on the extension of the transport path of the front transport mechanism, the photosensitive material is transferred to the adjacent pressure roller. It is also possible to carry out pressure contact with the driving roller for conveyance. In particular, in this single conveyance mode, even a large-sized photosensitive material can be reliably conveyed in a state in which the photosensitive material is pressure-bonded by the pressure roller and the driving roller.

The present invention, the movable frame is supported displaceably relative to the front Symbol shaft body, said biasing means may be constituted by a compression coil spring disposed in a position fitted on the shaft body.

  With this configuration, the urging force from the compression coil spring is applied to the movable frame from the shaft body part, and the movable frame is displaced in the axial direction of the shaft body in accordance with the thickness of the photosensitive material. However, the urging force can be applied to the movable frame.

  In the present invention, a pair of the pressure rollers are idle-supported in a parallel posture with respect to the plurality of movable frames, and a pair of pressure rollers are pressure-bonded to the drive roller by a biasing force of the biasing means. The photosensitive material may be bent along the outer periphery of the drive roller by the pressure of the pair of pressure rollers, and the conveyance direction of the photosensitive material may be changed.

  With this configuration, the distributed photosensitive material is sent along the outer periphery of the driving roller in the region where the pair of pressure rollers is disposed, so that the conveying direction is changed in a curved direction. The conveyance direction can be changed while reliably conveying with the pressure roller.

The present invention comprises a support transverse to the sorting path freely separated from the frame of the rear conveyance mechanism, attaching the first end of the leading Kijikutai to the support, the movable frame and the other end of the shaft You may hold | maintain the said movable frame by attaching to .

  With this configuration, it is possible to separate the support, the movable frame, and the pressure roller from the frame of the post-conveying mechanism, and to release the pressure-bonding surfaces of the drive roller and the pressure roller. When clogging occurs, the photosensitive material can be easily removed and maintained.

The present invention, the sorting mechanism provided with a plurality of chucker performing actuation by holding the photosensitive material fed from said front transport mechanism passes to the rear conveyance mechanism, the distributing mechanism, said sorting mode, It said single in transport mode with any of the modes may form configured earthenware pots by actuating the chucker.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, an exposure block Ex that exposes a silver salt photographic paper P (hereinafter referred to as photographic paper P) as a photosensitive material, and development processing of the photographic paper P that is exposed in the exposure block Ex The developing block De that performs the developing process and the drying block Dr that dries the photographic paper P after the development processing are housed in the housing 10 and are sent out of the housing 10 in the horizontal direction from the top of the housing 10 after the processing. A photographic printing apparatus is configured in which the photographic paper P is sent from the belt conveyance mechanism 11 to a sorter (not shown), and sorted and collected in units of orders. This photographic printing device is called a digital minilab, and although not shown in the drawings, image information captured by photoelectrically converting a frame image of a photographic film with a film scanner, or image information taken with a digital camera Is transmitted to the photographic printing apparatus, the photographic printing paper P is exposed in the exposure block Ex based on the image information, and automatic development processing can be performed.

  The exposure block Ex cuts the roll-shaped photographic paper P stored in one of the two photographic paper magazines M, M into a print size by the supply unit U1 and conveys it upward, and the photographic paper P from the supply unit U1. In the exposure unit U2, the image information is exposed while transporting the transport path in a vertical posture from below to above, and the photographic paper P fed upward from the exposure unit U2 is transferred to the front roller unit U3 (an example of a front transport mechanism). ), The transport direction is changed to the horizontal direction, and then it is fed in the horizontal direction by the sorting unit U4 (an example of a sorting mechanism), and then received by the developing block De from the rear roller unit U5 (an example of the rear transport mechanism). A conveying system for the photographic paper P is configured to pass.

  [Supply Unit] The supply unit U1 pulls out the roll-shaped photographic paper P stored in one of the two photographic paper magazines M, M by a plurality of supply rollers 16, and cuts it into a print size by a cutter 17, in this way. Necessary information is printed by the dot impact type print head 18 on the back side of the cut photographic paper P, and then fed to the exposure unit U2 in a single row by a feeder 19 that pinches and conveys the photographic paper P. ing. Although not shown in the drawing, the feeder 19 includes a chuck portion that can be switched between a state in which the photographic paper P is pressed and a state in which the photographic paper P is separated. In the supply unit U1, the photographic paper P on which information is printed on the back side by the print head 18 is sandwiched by the chuck portion, and is conveyed substantially upward by the operation of the feeder 19, and the photographic paper P is exposed to the exposure unit. After the delivery to U2, the chuck part is opened, and then the feeder 19 is moved downward, and the printing head 18 is operated to hold the photographic paper P on which information is printed on the back side by the chuck part as described above. .

  [Exposure Unit] As shown in FIGS. 1 and 2, the exposure unit U2 includes a pair of rollers that can be switched between an open state in which the photographic paper P is received from the feeder 19 and a crimped state in which the photographic paper P is conveyed. An exposure conveying roller comprising a metal driving roller 21 and a driven roller 22 that can be switched between a pressure-bonding state to be crimped to the driving roller 21 and an open state to be separated from the driving roller 21. The laser scanning type exposure engine 23 is arranged at a vertical position sandwiching the image and exposes image information in the main scanning direction (horizontal direction) to the photographic paper P conveyed upward (sub scanning direction) by the exposure conveying roller. It is configured with.

  The exposure engine 23 adjusts the amount of light from the laser light sources of the three primary colors R (red), G (green), and B (blue) housed in the casing by an acousto-optic modulation means, and then the vertical axis A structure is used in which it is sent to the exposure position while being scanned in the main scanning direction by being reflected by the mirror surface of a polygon mirror that is rotated by a core. As the exposure engine 23, a liquid crystal shutter method or a DMD method can be used.

  Although not shown in the drawing, the exposure unit U2 includes a stepping motor that rotationally drives the driving roller 21 at a set speed, and a pressure-bonding state in which the driven roller 22 is pressure-bonded to the driving roller 21 side, and the driven roller 22 Is provided with a rotary cam type operation mechanism for switching to an open state in which the motor is separated from the drive roller 21. Of the exposure conveyance rollers, those arranged upstream in the conveyance direction (lower side in the drawing) are set to an open state when conveying the photographic paper P from the receiving roller 20 and are printed. The leading edge of the paper P is received, and after this reception, the pressure is switched to a pressure-bonded state to apply a conveying force. Of the exposure conveying rollers, those arranged on the downstream side (upper side in the drawing) in the conveying direction are exposed on the upstream side. When transporting the photographic paper P from the transport roller, the photographic paper P is set in an open state to receive the leading end of the photographic paper P, and after this reception, the operation is performed so as to switch to the crimped state and apply the transport force.

  [Front Roller Unit] The front roller unit U3 functions to change the transport direction to the horizontal direction by sending the photographic paper P fed from the exposure unit U2 to the curved transport path. That is, the front roller unit U3 is fixed to the fixed guide 30 disposed on the lower side with the curved conveyance path interposed therebetween, and on the upper side with respect to the curved conveyance path, by swinging around the support shaft 31A. And a movable guide 31 that can be switched between an approach position and an open position that is separated from the fixed guide 30. In addition, a plurality of driving rollers 32 arranged on the fixed guide 30 side along the curved conveyance path, a pressing position for pressing each driving roller 32 (a state in which the driving roller 32 is pressed), and the driving roller 32 And a plurality of driven rollers 33 that can be switched to an open position that is separated (separated from the photographic paper P). Although not shown in the drawing, the front roller unit U3 includes an opening / closing operation system that integrally opens and closes the movable guide 31 and the driven roller 33, and a rotation drive system that drives and rotates the drive roller 32. I have.

  [Distributing Unit] As shown in FIGS. 2 to 4, the distributing unit U4 as the photosensitive material transport unit is configured to transfer the photographic paper P that has reached the supply position of the supply path F of the front roller unit U3 into two chuckers. By the operation of CH and CH, the rear roller unit U5 is configured to distribute the two distribution paths G and G to the transfer section. Incidentally, the transfer unit indicates a part that receives the photographic paper P at the transfer start position of the sorting paths G and G, and this transfer unit is configured by an introduction roller unit U5a (details will be described later) of the rear roller unit U5. ing.

  That is, the sorting unit U4 includes a pair of transport rails 40 in which a guide direction is set in the transport direction of the photographic paper P, a transport frame 41 supported so as to be reciprocally movable with respect to the respective transport rails 40, and each transport The frame 41 includes a shift rail 42 provided with a guide direction set in a direction orthogonal to the conveyance direction of the photographic paper P, and a shift member 43 supported so as to be reciprocally movable with respect to the shift rail 42. The chucker CH is provided so that the shift member 43 can be switched between a state in which the photographic paper P is clamped and a separated state in which the photographic paper P is allowed to pass.

  The conveying frame 41 is reciprocated by a driving force from an endless belt 46 that is operated by a driving force from a stepping motor type conveying motor 45, and the shift member 43 is operated by a driving force from a stepping motor type shift motor 47. The reciprocating operation is performed by the driving force from the endless belt 48. Further, the chucker CH is a drive type first chuck roller 49 supported in a fixed position with respect to the shift member 43, and a state in which the chucker CH is pressure-bonded to the first chuck roller 49 from above (the printing paper P is attached). A second chuck roller 50 that can be switched between a state in which the second chuck roller is pressed and a state in which the second chuck roller 50 is separated upward. A chuck operating unit (not shown) composed of a motor and a motor 51 for driving and rotating the first chuck roller 49 are provided.

  In the sorting unit U4, when the photographic paper P is a small size, the photographic paper P sent to the supply position at the end position of the single supply path F of the front roller unit U3 is sandwiched by one chucker CH. Then, it is fed to one delivery position of the two rows of sorting paths G, G formed in the rear roller unit U5, and the next photographic paper P is sandwiched by the other chucker CH, and the two rows of sorting paths G, The operation is performed in the sorting mode for feeding to the other delivery value of G, and when the size of the photographic paper P is large, the photographic paper P sent out from the single supply path F of the front roller unit U3. By sandwiching both sides of the front end position between the pair of chuckers CH, CH and operating the pair of chuckers CH, CH at a speed equal to the conveying speed in the front roller unit U3, And it is configured to perform operation in a single transport mode for conveying the drawing paper P to the rear roller unit U5 located on the extension of the feed path F. When the photographic paper P is distributed by the distribution unit U4, the photographic paper P is simultaneously transferred in a parallel state in which the leading ends of the photographic paper P are aligned with respect to the distribution paths G and G. Either of the forms of delivering each photographic paper P in a zigzag state where the sorted photographic paper P is sent first and the sorted photographic paper P is sent later may be used.

  [Rear Roller Unit] As shown in FIGS. 4 to 9, the rear roller unit U5 includes an introduction roller portion U5a to which the photographic paper P from the chucker CH is transferred, and a photographic paper P sent from the introduction roller portion U5a. Is conveyed obliquely downward, and is conveyed to the introduction roller 28 provided in the development processing tank 15 of the development block De.

  The introduction roller portion U5a includes a drive roller 55 driven by a stepping motor type introduction motor 54, four pressure rollers 56 that are pressure-bonded to the drive roller 55, and a guide plate that guides the photographic paper P obliquely downward. 57. The drive roller 55 is formed of rubber or resin with respect to the metal support shaft 55A, and the press roller 56 is formed of rubber or resin with respect to the metal support shaft 56A. Yes, the dimension (full length) in the direction along the axis of the support shaft 56A is set to about 152 mm.

  The drive roller 55 is supported on the side plates 35 on both sides, supports the introduction motor 54 with respect to the side plate 35, and forms a transmission system for transmitting power from the introduction motor 54 to the support shaft 55A of the drive roller 55. is doing. Further, with respect to the connecting frame 58 that is detachably connected to the upper end portion of the side plate 35, it is at a substantially central position in the width direction of the sorting paths G, G, with respect to the driving shaft X of the driving roller 55. A shaft body 59 is disposed on the support shaft Y that is orthogonal to each other, and a movable frame 60 supported by a connecting frame 58 (an example of a support body) via each shaft body 59 is provided. A pair of pressure-bonding rollers 56 is supported in a parallel posture with respect to the frame 60, and a guide body 62 made of resin, whose end on the protruding side is close to the outer peripheral portion of the drive roller 55, for each movable frame 60. It has.

  It should be noted that the pressure rollers 56 supported by the respective movable frames 60 are arranged in parallel so as to cross the conveyance path of the photographic paper P, and the total length of the pressure rollers 56 is set to 152 mm as described above. In the part U5a, it is also possible to press and convey the photographic paper P having a width exceeding 300 mm by the pressure-bonding rollers 56, 56 and the driving roller 55 arranged in parallel, and the printing from the introduction roller part U5a. Also in the transport roller unit U5b to which the paper P is sent, the width of the roller is set so that the photographic paper P having a width exceeding 300 mm can be pressed and transported.

  The shaft body 59 is arranged in a state in which one end is fixed to the movable frame 60 side and the other end is inserted through the hole of the connecting frame 58 and is fitted to the shaft 59. By providing the compression coil spring 61 (an example of an urging means), the movable frame 60 can swing around the support axis Y with respect to the connecting frame 58 and can be displaced in the direction along the support axis Y. It is supported. The outer periphery of the pressure roller 56 is pressed against the driving roller 55 by the urging force of the compression coil spring 61, and the restricting piece 63 protruding from the connecting frame 58 is inserted into the hole 60A of the movable frame 60. Thus, excessive swinging of the movable frame 60 around the support axis Y with respect to the connecting frame 58 is restricted.

  The shaft body 59 is fixed at the center position in the longitudinal direction of the movable frame 60 (the direction along the axis W of the pressure roller 56) and at the center position in the width direction of the movable frame 60. As shown in FIG. 8, in a state where a pair of pressure-bonding rollers 56 and 56 are pressure-bonded to the driving roller 55, the photographic paper P fed out from the chucker CH in the horizontal direction is subjected to the upstream pressure-bonding roller 56 and the driving roller 55. The photographic paper P is received in the form of being crimped, and the photographic paper P is bent along the outer periphery of the driving roller 55 by the pressure of the pressure roller 56 and the guide body 62, and the conveying direction is changed obliquely downward. The conveyance path is formed so that the photographic paper P is sent obliquely downward from the pressure roller 56 on the downstream side.

  As shown in FIGS. 4 and 5, the connecting frame 58 has an engaging protrusion 58A at one end and an engaged piece 58B at the other end. One of the side plates 35 is formed with an engagement hole 65 into which the engagement protrusion 58A of the connection frame 58 is engaged, and the other of the side plates 35 is a loop shape that engages with the engagement piece 58B of the connection frame 58. A buckle 66 comprising an engaging rod 66A and a switching arm 66B is provided. Accordingly, the pressure roller 56 can be removed integrally with the connection frame 58 by releasing the connection with the buckle 66.

  The transport roller unit U5b has guide plates 80 and 80 arranged at the upper and lower positions in the transport path of the photographic paper P, and includes two sets of a driving roller 81 and a driven roller 82 at an upstream position and an intermediate position in the transport direction of the photographic paper P. The transport roller composed of the driving roller 83 and the driven roller 84 is disposed at a downstream position in the transport direction. The drive rollers 81, 81, 83 are constituted by drive shafts 81A, 81A, 83A and rollers 81B, 81B, 83B made of a flexible material such as rubber or resin, and the driven rollers 82 are each a support shaft 82A. On the other hand, a roller 82B made of a flexible material such as rubber or resin is provided. The driven roller 84 includes a roller 84B made of a metal material such as aluminum with respect to the support shaft 84A.

  An input gear 86 is provided at one end portion of the drive shaft 81A of the drive roller 81 at the upstream position, and a gear type is provided so that the rotational drive force from the drive roller 55 of the introduction roller portion U5a can be transmitted to the input gear 86. A transmission mechanism 87 is formed. Further, a pulley 88 is provided at the other end of the drive shaft 81A, a pulley 89 is provided at the drive shaft 81A of the drive roller 81 at an intermediate position adjacent thereto, and a gear 90 is provided at the drive shaft 83A of the drive roller 83 at the downstream position. And a pulley 92 that rotates integrally with the gear 91 that meshes with the gear 90. By winding an endless belt 93 around these pulleys 88, 89, and 92, all the drive rollers 81, 81, and 83 are It is configured so that it can be driven synchronously at high speed.

  A one-way clutch 95 is provided between the drive shaft 81A constituting the drive roller 81 at the upstream position and the roller 81B, and one direction is provided between the drive shaft 81A constituting the drive roller 81 at the intermediate position and the pulley 89. A clutch 95 is provided. In each one-way clutch 95, when the photographic paper P is fed at a speed higher than the conveyance speed of the photographic paper P, a rotation allowable direction is set so as to allow the introduction of the photographic paper P. In this rear roller unit U5, the sheet P is conveyed in a state where an appropriate pressure-bonding force is applied to the photographic paper P, and the pressure-feeding conveying force applied to the photographic paper P from the most downstream conveying roller is provided. The pressure is set to be weaker than the pressure-feeding / conveying force of the other rollers, and is set to be weaker than the pressure-feeding / feeding force applied to the photographic paper P from the introduction roller 28 of the developing block De.

  In the transport roller unit U5b, the base side of the photographic paper P is sent in an attitude in which the base side of the photographic paper P faces upward (position in which the photosensitive surface faces downward). The photosensitive surface of the photographic paper P comes into contact with the driven roller 84 of the transport roller at the most downstream position. In particular, as described above, the conveyance speed of the introduction roller 28 of the developing block De is higher than the conveyance speed of the photographic paper P in the rear roller unit U5, and the pressure conveyance force is set as described above. When the photographic paper P from the roller unit U5 is transferred to the development block De side, the base side of the photographic paper P slips with respect to the pressure-bonding surface made of the flexible material of the driving roller 83. The photosensitive surface of the photographic paper P is in contact with a smooth pressure-bonded surface made of a metal material of the driven roller 84, and the driven roller 84 can rotate at a speed corresponding to the moving speed of the photographic paper. The relative speed with respect to the photographic paper is made very small so that the photosensitive surface of the photographic paper P is not damaged.

  Thus, the combination of the front roller unit U3, the sorting unit U4, and the rear roller unit U5 corresponds to the photosensitive material conveyance structure of the present invention. In the present invention, the conveyance roller portion of the rear roller unit U5. When the photographic paper P is delivered to the U5b by the chucker CH (in the sorting mode), the upstream side of the pair of pressure rollers 56 arranged on one side is driven. The photographic paper P is received in the form of being introduced between the roller 55 and conveyed to the downstream pressure roller 56 side by the rotation of the drive roller 55. When the photographic paper P is transported in this way, the photographic paper P is sandwiched between the driving roller 55 and the pressure roller 56 by the urging force acting on the movable frame 60 from the compression coil spring 61. When sandwiched, the movable frame 60 is displaced by an amount corresponding to the thickness of the photographic paper P toward the connection frame 58, and a uniform pressure is applied to the photographic paper P distributed in the width direction.

  Further, a pair of pressure-bonding rollers 56, 56 are supported in a free-rotating manner in parallel with respect to one movable frame 60, and the movable frame 60 is supported so as to be swingable around the support axis Y. When the rollers 56 and 56 are pressure-bonded to the driving roller 55, the driving shaft core X of the driving roller 55 and the shaft core W of the pressure-bonding rollers 56 and 56 reach a parallel posture and become stable. It is not only necessary to adjust the drive shaft core X of the roller 55 and the shaft core W of the pressure roller to be in a parallel posture, but also capable of linearly transporting the photographic paper P on the sorting path G without meandering. It has become. Further, when the photographic paper P is delivered without being distributed to the transport roller unit U5b (in the single transport mode), the pressure roller that is idle-supported on the two movable frames 60, 60. 56, the symmetric position is crimped to the center in the width direction of the photographic paper P, and the photographic paper P is crimped and conveyed in a state where a balanced pressure is applied to the photographic paper P in the width direction. It is possible.

  Further, by providing a pair of pressure-bonding rollers 56, 56, the photographic paper P is fed along the outer periphery of the driving roller 55 in a curved form so that the conveyance direction of the photographic paper P can be changed. By the operation of releasing the connection by 66, not only the pressure roller 56 is removed integrally with the connection frame 58 and the portion of the drive roller 55 is largely exposed, but also the portion of the pressure roller 56 and the movable frame 60 is opened and a paper jam occurs. Removal and maintenance can be performed easily.

[Another embodiment]
In the present invention, in addition to the above-described embodiment, a sorting mechanism is configured to sort the photosensitive material (printing paper P) in three or more rows in the sorting unit, and the number of movable frames 60 equal to the number of sorting paths. The post-conveying mechanism may be configured to include the pressure roller 56. Further, the front conveyance mechanism, the distribution mechanism, and the rear conveyance mechanism may be arranged upstream of the exposure unit in the conveyance direction so that the distributed photosensitive material (printing paper P) is exposed at the same time.

Longitudinal side view of photo printing device Side view showing a path for transporting photographic paper exposed by the exposure unit Top view of sorting unit Rear view showing roller arrangement of rear roller unit Exploded perspective view of introduction roller Diagram showing support structure of movable frame Bottom view showing the pressure roller supported by the movable frame Sectional drawing which shows roller arrangement | positioning of a rear roller unit Perspective view of rear roller unit

Explanation of symbols

55 Driving roller 56 Pressure roller 58 Support body 59 Shaft body 60 Movable frame 61 Biasing means / compression coil spring P Photosensitive material X Drive shaft core Y Support shaft core CHucker U2 Distributing mechanism U3 Front transport mechanism U4 Rear transport mechanism

Claims (5)

A pre-conveying mechanism that sends the photosensitive material cut into a print size in a single row, a distribution mechanism that distributes the photosensitive material from the pre-conveying mechanism to a plurality of distribution paths, and a plurality of photosensitive materials from the distribution mechanism. A photosensitive material transport structure including a post-transport mechanism that transports along a sorting path,
The post-conveying mechanism includes a single drive roller disposed at a position crossing the plurality of distribution paths, and a pressure roller disposed at each position corresponding to the distribution path, and the pressure roller is movable. The movable frame is supported by a shaft, and is supported by a shaft body disposed on a support shaft core in a posture orthogonal to the drive shaft core of the drive roller at a central portion in the shaft core direction of the pressure roller. Supported around the shaft so as to be swingable, and biased toward the drive roller by biasing means ,
The distribution mechanism operates in any one of a distribution mode in which the photosensitive material is distributed to the plurality of distribution paths and a single transport mode in which the photosensitive material is sent on an extension of the transport path in the front transport mechanism. The post-conveying mechanism is configured such that the photosensitive material sent in the sorting mode is crimped by a corresponding pressure roller, and the photosensitive material sent in the single conveyance mode is crimped by an adjacent pressure roller . Material transport structure. Said movable frame is supported displaceably relative to the front Symbol shaft body, said biasing means, the light-sensitive material of claim 1, wherein is composed of a compression coil spring disposed in a position fitted on the shaft body Transport structure.   The pair of pressure-bonding rollers are idled and supported in a parallel posture with respect to the plurality of movable frames, and the pair of pressure-bonding rollers are pressure-bonded to the driving roller by the biasing force of the biasing means. 3. The photosensitive material transport structure according to claim 1, wherein the photosensitive material is bent along the outer periphery of the drive roller by a pressure-bonding force of the roller and sent to change the transport direction of the photosensitive material. Comprising a support which traverses the distribution path freely separated from the frame of the rear conveyance mechanism, attaching the first end of the leading Kijikutai to the support by attaching the other end of the shaft to the movable frame 4. The photosensitive material transport structure according to claim 2, wherein the movable frame is held. The sorting mechanism is provided with a plurality of chucker performing actuation by holding the photosensitive material fed from said front transport mechanism passes to the rear conveyance mechanism, the distributing mechanism, said sorting mode, the single transport carrier structure of the light-sensitive material according to any one of claims 1 to 4, in either mode is configured to operate the chucker with mode.

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