JP4258083B2 - Photographic paper transport device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographic paper transport device used in a photographic processing apparatus used in a developing station or the like, and more particularly to a device capable of correcting meandering that occurs during the transport of photographic paper.
[0002]
[Prior art]
Generally, a photographic processing apparatus exposes the photographic printing paper by cutting a photosensitive material (photographic photographic paper) wound in a roll shape into a predetermined size, and enlarging and projecting an image on a negative film. The unit includes a developing unit that develops the exposed photographic paper, a drying unit that dries the developed photographic paper, and the like. In each of these units, the photographic paper is sequentially conveyed by a conveyance device using a conveyance belt or a nip roller.
[0003]
In particular, in the exposure unit, in order to expose an image to a predetermined position of a photographic printing paper having a predetermined size, it is necessary to provide a transport device that can transport the photographic printing paper to a predetermined position of the exposure unit. If the photographic paper is meandering and slanting during conveyance, the image is exposed obliquely on the photographic paper, resulting in a defective product.
[0004]
A conventional transport device for an exposure unit employs a structure in which a photographic paper wound in a roll is pulled out by a nip roller and cut into a predetermined length by a cutter, and the photographic paper is immediately placed on an exposure table. It was. By adopting such a transport device configuration, the posture of the photographic printing paper on the exposure table was not upset.
[0005]
[Problems to be solved by the invention]
In this conventional conveying apparatus, there is a positional restriction that a magazine and a cutter for storing photographic paper wound in a roll shape and an exposure table must be arranged close to each other. In recent years, various types of photographic processing apparatuses have been developed in order to cope with digitization and the like, and a case where a certain conveyance distance has to be provided between the exposure unit and the cutter has appeared. In this case, the posture of the photographic printing paper may change during the conveyance depending on the conveyance method of the conveyance device, and there is a problem that the predetermined photographic processing may not be performed.
[0006]
The present invention has been made to solve the above-described problems of the conventional example, and an object of the present invention is to provide a photographic paper transporting device that can transport photographic paper without meandering.
[0007]
[Means for Solving the Problems]
The conveying apparatus according to claim 1, which achieves the above object, includes a conveying means positioned on the upstream side of the conveyed photographic printing paper and a pair of conveying means positioned downstream of the conveying means for nipping and conveying the photographic printing paper. And the conveying means comprises: Keeping the nip state The leading edge of the photographic paper is fed toward the nip portion of the pair of rollers that are stopped, and the conveyance of the photographic paper is continued until the leading edge is bent along the nip portion. In this case, the tip end along the nip portion is nipped and conveyed.
[0008]
According to this configuration, even if meandering occurs on the photographic printing paper due to the conveyance by the conveying device located on the upstream side, the photographic printing paper is sent to the nip portion of the pair of stopped roller pairs. The leading end of the photographic printing paper becomes parallel along the nip portion of the pair of rollers. If the pair of rollers is driven in this state and the leading edge of the photographic paper is conveyed while being nipped, the meandering of the photographic paper is corrected and the leading edge of the photographic paper is kept parallel to the pair of rollers. Be transported.
[0009]
According to a second aspect of the present invention, in the first aspect, the pair of rollers is provided in front of the exposure unit.
According to this configuration, since the meandering is corrected before the exposure unit, it is not necessary to arrange a cutter or a magazine directly connected to the exposure unit.
[0010]
According to a third aspect of the present invention, in the first aspect, the conveying means and the pair of rollers convey two or more of the photographic printing papers in parallel.
According to this configuration, when two or more photographic printing papers are conveyed in parallel, meandering occurs when they are arranged in parallel. The meandering is corrected by a pair of rollers, and two or more photographic printing papers The leading ends are also aligned at the nip portion of the pair of rollers, so that the delivery timings of the two or more photographic printing papers to the exposure portion coincide.
[0011]
According to a fourth aspect of the present invention, in the conveying device according to the third aspect, the pair of rollers are provided in front of an exposure unit having a digital line exposure head.
According to this configuration, the digital line exposure head improves the overall exposure processing efficiency by transporting two or more photographic printing papers in parallel even when scanning takes a long time and the transport becomes slow. be able to.
[0012]
According to a fifth aspect of the present invention, in the first aspect, the conveying device chucks the photographic printing paper and conveys it.
According to this configuration, when the photographic paper is chucked and conveyed, the meandering of the photographic paper is likely to occur depending on the chucking method. Therefore, it is particularly effective to correct the meander during conveyance to the pair of rollers.
[0013]
A conveying device according to a sixth aspect is the conveying device according to the first aspect, wherein a guide member for guiding the bending of the photographic printing paper is provided between the pair of rollers and the conveying device.
According to this configuration, when the leading edge of the photographic paper is fed toward the nip portion of the pair of stopped rollers, the guide member bends in a predetermined direction, and the leading edge of the photographic paper is along the nip portion. Surely become parallel.
[0014]
According to a seventh aspect of the present invention, in the conveyance device according to the sixth aspect, the guide member is formed so as to bend so that an exposure surface of the photographic paper is convex, and the exposure surface of the photographic paper contacts the guide member. The part is provided with a sliding member or a space.
According to this configuration, the emulsion on the exposed surface of the photographic printing paper is not damaged by being in contact with the sliding member or not being in contact with other members.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a structural diagram illustrating an apparatus configuration of an example of a photographic processing apparatus in which the conveyance device according to the first embodiment is incorporated. FIG. 2 is a control block diagram of the photo processing apparatus shown in FIG.
[0016]
First, the structure of the photographic processing apparatus 1 in which the conveying apparatus according to the first embodiment is incorporated will be described with reference to FIG. The photo processing apparatus 1 includes a printer unit 2, a processor unit 3, and a finishing processing unit 4. The photographic printing paper 6 cut to a predetermined length by the cutters 13 and 14 is conveyed from the printer unit 2 to the finishing processing unit 4 through the processor unit 3 along the conveyance path shown by the one-dot chain line in FIG. The In the printer unit 2, an exposure print process of an image based on digital data is performed on the photographic printing paper 6 that is a photosensitive material. In the processor unit 3, the exposed photographic paper 6 sequentially passes through liquid tanks (not shown) in which different liquid agents are stored, whereby processing such as development, bleaching, and stabilization is performed on the photographic paper 6. Is done. In the finishing processing unit 4, the photographic printing paper 6 processed by the processor unit 3 is subjected to a drying process, and the photographic printing paper 6 that is further dried and discharged from the discharge port 5 is sorted for each order.
[0017]
The printer unit 2 includes cutters 13 and 14 for cutting the photographic printing paper 6 having a predetermined width drawn out from the paper magazines 11 and 12 storing the wound long photographic printing paper 6 to a predetermined length, A conveying device 15 that conveys the photographic paper 6 cut to a length just before the exposure position, an exposure unit (exposure unit) 16 for performing an exposure process on the photographic paper 6, and a photosensitive emulsion for the photographic paper 6 A printing unit 17 for printing a desired character on a surface (back surface) on which no layer is formed, and a roller pair 18a for pulling the photographic printing paper 6 from the paper magazines 11 and 12 and transporting it to the transporting device 15. And a pair of rollers 18 b for receiving the photographic printing paper 6 conveyed by the conveying device 15 and conveying it to the PLZT print head 24. The roller pair 18b forms an exposed portion together with the PLZT print head 24. Further, a transport mechanism 18c that transports the photographic paper 6 exposed by the exposure unit 16 to the print unit 17 and a transport mechanism 18d that transports the photographic paper 6 to the processor unit 3 for development processing are provided. .
[0018]
The exposure unit 16 includes a light source 23 incorporating a halogen lamp, and a PLZT print head (exposure unit) 24 that guides light from the light source 23 through an optical fiber (not shown). The PLZT print head 24 has a PLZT crystal as an electro-optic element having an electro-optic effect. PLZT crystal is a transparent ferroelectric ceramic material obtained by adding lanthanum to lead zirconate titanate and has a property of changing the birefringence according to the applied voltage, so that it can function as an optical shutter. it can. PLZT prints are obtained by arranging the optical shutters made of PLZT crystals as light-emitting dots in a one-dimensional manner in the width direction of the photographic printing paper 6, that is, in the direction perpendicular to the conveyance direction of the photographic printing paper 6 (the vertical direction in FIG. 1). The PLZT print head 24, which is the main part of the head 24, extends in the width direction of the photographic printing paper 6 which is the arrangement direction of the optical shutter. Therefore, by controlling the conveyance timing of the photographic printing paper 6 by the roller pair 18b and the optical shutter opening / closing timing of the PLZT print head 24, the photosensitive emulsion surface of the photographic printing paper 6 is line-exposed to form a latent image of a desired image. be able to. The light source 23 can emit light of, for example, three colors of RGB. Correspondingly, the PLZT print head 24 is also integrally arranged with the three RGB heads in a direction orthogonal to the extending direction. Has been.
[0019]
The conveying device 15 includes a chucker (conveying means) 31 positioned on the upstream side of the conveying path and a pair of rollers 32 positioned on the downstream side of the chucker 31. The chucker 31 has a grip 34 that can sandwich the photographic printing paper 6. The chucker 31 changes from an obliquely rightward posture toward the right cutter 13 to a vertical posture, and can move up and down between the pair of rollers 32. Further, the chucker 31 is also movable in the thickness direction of the paper. The chucker 31 that holds two or more photographic papers 6 in parallel in the thickness direction of the paper surface can transport the leading ends of the photographic papers 6 toward the nip portion of the pair of rollers 32.
[0020]
The printing unit 17 has a known printing head (not shown) such as a thermal head, and can print desired characters and symbols on the surface (back surface) of the photographic paper 6 on which the photosensitive emulsion layer is not formed. It is configured.
[0021]
In the present embodiment, in addition to the above, the printer unit 2 inputs a control unit 19 that controls the operation of the entire photo processing apparatus 1, and the number of prints, correction color and density correction values, and the like. A keyboard (input means) 20 for displaying, various information related to the photo processing apparatus 1 to notify the operator and to prompt the operator to input from the keyboard 20 if necessary, and photographic paper 6 has a data capturing unit 22 for capturing image data to be exposed.
[0022]
The data capturing unit 22 may be any unit as long as it can capture image data to be exposed recorded on each frame of the film and supply it to the control unit 19. For example, it may be an image reading device such as a scanner equipped with a CCD image sensor capable of reading an image recorded on each frame of the film, or image data recorded on a data recording medium such as a floppy disk or MO. May be a data reading device capable of reading data, or may be a connection interface with an external image reading device or data reading device.
[0023]
FIG. 2 is a block diagram of a control system of the photographic processing apparatus 1 shown in FIG. As shown in FIG. 2, the control unit 19 includes a CPU 41, a ROM 42, a RAM 43, and an input / output interface 44 that are connected to each other by a bus 45. The input / output interface 44 includes a keyboard 50, a monitor 21, a driver 50 that controls a motor 46 that drives the cutters 13 and 14, and a motor 47 that drives a chucker (conveying means) 31 of the conveying device 15 in the vertical and horizontal directions. A driver 51 for controlling, a driver 52 for controlling a motor 48 for rotationally driving the pair of rollers 32 of the conveying device 15, a driver 53 for controlling a motor 49 for driving the roller pair 18b, and each optical shutter of the PLZT print head 24 Are connected to the driver 54, the printing unit 17, and the data capturing unit 22. The two cutters 13 and 14 may be driven by different motors.
[0024]
The CPU (control means) 41 executes various calculations to generate signals for controlling the operations of the respective parts of the photographic processing apparatus 1 and outputs operation commands to the respective parts of the photographic processing apparatus 1 according to the calculation results. The signal generated by the CPU 41 is supplied to the drivers 50 to 54 connected thereto via the input / output interface 44. The ROM 42 stores a program for operations performed by the CPU 41 and data necessary for it. Further, the RAM 43 stores data given from the keyboard 20 or the data capturing unit 22 or the calculation result in the CPU 41. Further, the RAM 43 is formed with a line buffer for temporarily storing image data for one line for each color of RGB of image data relating to the frame to be exposed and other editing information output as necessary. Further, the chuck 42 of FIG. 1 feeds the leading end of the photographic paper 6 toward the nip portion of the pair of rollers 32 that are stopped, and photographs are taken until the leading end bends along the nip portion. A control program is also stored in which the pair of rollers 32 nips and conveys the leading end of the photographic printing paper 6 along the nip portion while the conveyance of the photographic printing paper 6 is continued.
[0025]
Next, details of the operation of the structure of the transport device 15 of the first embodiment will be described with reference to FIG. 3 and FIG. 4. FIG. 3 is a diagram showing the configuration and operation of the first embodiment of the transport apparatus of the present invention. FIG. 4 is an operation diagram illustrating the operation of the parallel chuck of the transport apparatus of FIG.
[0026]
In FIG. 3B, the transport device 15 includes a chucker 31 as a transport unit and a pair of rollers 32. In FIG. 3A, the chucker 31 corresponds to the PLZT print head 24 (not shown) divided into left and right parts, and two sets of a first chucker 31a and a second chucker extending in the same direction as the left and right. 31b. Each chucker 31a, 31b has a plurality of openable / closable grips 34 for holding or holding the photographic paper 6 cut by the cutters 13, 14.
[0027]
The first chucker 31a and the second chucker 31b of the chucker 31 can be moved up and down, left and right independently or jointly, and the photographic printing paper 6 can be sandwiched and conveyed by each chucker 31a, 31b or both chuckers 31a, 31b. Therefore, each chucker 31a, 31b has four grips 34a, 34b, 34c, 34d in the length direction in total. The photographic paper 6a is chucked and held on the first chucker 31a by the grips 34a and 34b, and the photographic paper 6b is chucked and held on the second chucker 31b by the grips 34b and 34c. When chucking one sheet of photographic paper 6, the grip 34b of the first chucker 31a and the grip 34c of the second chucker 31b are used.
[0028]
In FIG. 3B, a pair of rollers 32 is obtained by nipping a hard roller 32a whose surface is made of metal or the like and a soft roller 32b whose surface is coated with rubber or the like. The nip portion 32 c of both rollers 32 a and 32 b is parallel to the PLZT print head 24. Further, the target of vertical movement by the chucker 31 is slightly decentered from the nip portion 32c toward the hard roller 32a so that the tip 6c of the photographic paper 6 held by the chucker 31 first hits the surface of the hard roller 32a. Yes.
[0029]
The chucker 31 is moved up and down, left and right, and the grip 25 is opened and closed when the control unit (control means) 19 shown in FIG. The rotation of the pair of rollers 32 is performed when the control unit 19 shown in FIG. Further, a program relating to the driving procedure of the chucker 31 and the pair of rollers 32 is written in the ROM 42 of the control unit 19 of FIG.
[0030]
The transport device 15 has a first function for correcting the meandering of each of the two photographic printing papers 6a and 6b and a second function for aligning the tips of the two photographic printing papers 6a and 6b. In order to achieve this function, the upstream chucker 31 and the pair of downstream rollers 32 are driven by the following first procedure and second procedure. In the illustrated example of FIG. 3A, the photographic printing paper 6a is not meandering, but the photographic printing paper 6b is in front of the photographic printing paper 6a and is meandering downward.
[0031]
First, in the first procedure, the pair of rollers 32 are stopped while maintaining the nip state, and the tips 6c and 6c of the photographic printing papers 6a and 6b are nipped while the chucker 31 holds the photographic printing papers 6a and 6b. It feeds toward the part 32c. At this time, the leading ends 6c and 6c of the photographic printing papers 6a and 6b hit the outer periphery of the hard roller 32a, and abut against the nip portion 32c along the outer periphery and stop. When the leading edge 6c of the photographic printing paper 6 first strikes the nip portion 32c and the chucker 31 further moves downward, the bending 6d occurs. Even if there is a bend 6d, the photographic printing paper 6b has a driving force, so that the leading edge 6c sequentially adjusts along the nip portion 32c as shown in the figure. On the other hand, the leading edge 6c of the photographic printing paper 6a hits the nip portion 32c later than the leading edge 6c of the photographic printing paper 6b, and the whole is slightly bent as shown in the figure. As shown in FIG. 3A, meandering is corrected at the front end 6c of the photographic printing paper 6b, and both the front ends 6c and 6c of the photographic printing paper 6a and 6b are aligned.
[0032]
In the second procedure, the pair of rollers 32 is driven in synchronization with the exposure timing by driving the roller pair 18b (see FIG. 1), and immediately after that, the grip 34 of the chucker 31 is released. Since the leading ends 6c, 6c of the photographic printing papers 6a, 6b abut against the nip portion 32c, the leading ends 6c, 6c of the two-dot chain line photographic printing papers 6a, 6b fed from the pair of rollers 32 meander. There is no front and back. Therefore, in the PLZT print head 24, it is not necessary to shift the left and right images in software, and it can be accurately exposed as it is to a predetermined place on the photographic printing paper 6a, 6b.
[0033]
The chucker 31 has a function of conveying photographic printing paper supplied from one magazine 11 and 12 (see FIG. 1) and sequentially cut in parallel. The function of this parallel conveyance will be described with reference to FIG. In FIG. 1, the leading edge of the photographic printing paper cut by the cutters 13 and 14 is held in a state where the leading edge protrudes by the roller pair 18a on the downstream side. In FIG. 4A, the chucker 31 is shifted to the left side of the drawing, and when it rises from the position of the two-dot chain line to the position of the solid line (arrow a), the photographic printing paper 6b is sandwiched. The grips 34c and 34d are closed to sandwich the photographic printing paper 6b, and the chucker 31 is temporarily lowered (arrow b) and then shifted to the right (arrow c).
[0034]
During this time, the next cut photographic paper 6d advances from the downstream roller pair 18a in FIG. In FIG. 4B, when the chucker 31 is shifted from the two-dot chain line position to the solid line position while being shifted to the right (arrow d), the photographic printing paper 6a is sandwiched. The grips 34a and 34b are closed and the photographic printing paper 6a is clamped. The chucker 31 is lowered once (arrow e) and then is shifted to the right by half (arrow f). Try to get inside. As shown in FIG. 4C, the chucker 31 is lowered (arrow g), and the leading ends 6c, 6c of the photographic printing papers 6a, 6b are brought into contact with the nip portions 32c of the pair of stopped rollers 32 and bent. Correction of meandering and alignment of the transport directions of the two photographic printing papers 6a and 6b are performed.
[0035]
Since the PLZT print head (exposure unit) 24 in FIG. 1 performs exposure for each line, it takes time for exposure. Therefore, when two or more sheets of photographic printing paper are run in parallel and exposed, the exposure speed of the entire apparatus is increased, and matching with the processing speed of the processor unit 3 can be ensured. However, when two or more sheets of photographic printing paper are arranged in parallel, it is necessary to use a chucker 31 having a function of parallel conveyance as shown in FIG. The chucker 31 shown in FIG. 4 is movable up and down and left and right, and opens and closes the grips 34a to 34d to chuck the photographic printing papers 6a and 6b. Since the photographic printing papers 6a and 6b are supported at two points, the photographic printing papers 6a and 6b are likely to meander and uneven in the conveying direction. Therefore, the meandering correction function and the conveying direction alignment function by the conveying device 15 of FIG. 3 are extremely effective.
[0036]
Next, a transport device 151 according to the second embodiment of the present invention will be described below with reference to FIGS. FIG. 5 is a perspective view showing the external structure of the transport apparatus according to the second embodiment. FIG. 6 is a side view showing a guide member mounting structure with respect to the conveying apparatus of FIG.
[0037]
In FIG. 5, the transport device 151 includes a pair of rollers (transport means) 311 positioned on the upstream side and a pair of rollers 321 positioned on the downstream side arranged substantially horizontally with a predetermined interval therebetween. The roller pair 311 nips and conveys the photographic printing papers 6a and 6b between the hard roller 311a and the soft roller 311b. The roller pair 311 may be provided with a belt, and the photographic printing papers 6a and 6b may be sandwiched and conveyed between the belts. The pair of rollers 321 is formed by niping a hard roller 321a whose surface is coated with a metal or the like and a soft roller 321b whose surface is coated with rubber or the like, as in the case of FIG.
[0038]
As shown in FIG. 6, a first guide member 351 and a second guide member 352 are provided to guide the leading end 6c of the photographic printing paper 6a, 6b conveyed by the roller pair 311 to the nip portion 321c. The first guide 351 supports the back surface of the photographic printing paper 6a, 6b (opposite side of the emulsion surface on which the image is formed), and guides the front end 6c of the photographic printing paper 6a, 6b so as to follow the outer periphery of the hard roller 321a. . The second guide 352 is formed in a mountain shape so as to guide the deflection of the emulsion surface (exposure surface) of the photographic printing paper 6a, 6b. A sliding member 353 such as Teflon tape or an acrylic pile seal is attached to the inner surface of the second guide 352 (the portion in contact with the emulsion surface of the photographic papers 6a and 6b) so as not to damage the emulsion surface. . In addition, a space can be provided for the section L of the second guide 352 so that the photographic printing papers 6a and 6b do not come into contact with each other even if they are bent. As a result, the emulsion surfaces of the photographic printing papers 6a and 6b are hardly in contact with the second guide 352 at all times.
[0039]
Returning to FIG. 5, the roller pair 311 is driven by a motor 471 and a driver 511, and the pair of rollers 321 is driven by a motor 481 and a driver 521. The driver 511 and the driver 521 are controlled by a control unit (control means) 191. By this control, the roller pair 311 feeds the leading end 6c of the photographic printing paper 6a, 6b toward the nip portion 321c of the pair of stopped rollers 321, and the photographic printing is performed until the leading end 6c bends along the nip portion 321c. Continuing to convey the paper 6a, 6b, a pair of rollers 321 is driven in a series of ways to nip and convey the tip 6c along the nip portion 321c.
[0040]
Driving by the control unit 191 corrects the meandering of the photographic papers 6a and 6b and aligns the leading ends 6c of the photographic papers 6a and 6b in the transport direction. Further, the first guide member 351 guides the front end 6c of the photographic printing paper 6a, 6b toward the nip portion 321c so that a bend is formed with the emulsion surface (exposure surface) convex upward. The second guide member 352 guides the warp with the emulsion surface convex upward to a predetermined shape. In this way, when the guide members 351 and 352 are combined, the meandering adjustment and the tip position correction can be performed regardless of the conveying direction of the roller pair 311 and the pair of rollers 321.
[0041]
Furthermore, still another embodiment of the present invention will be described below.
(1) In 1st Embodiment and 2nd Embodiment, the conveyance means 15 and 151 may convey the sheet of photographic printing paper. If the high-speed PLZT print head (exposure unit) 24 is used, the processing speeds of subsequent units may be matched even if two or more photographic printing papers are not juxtaposed.
(2) In the first embodiment, instead of the PLZT print head 24 of the exposure unit, an optical exposure head that projects in a plane may be used. In this case, when the conveyance device capable of correcting meandering according to the present invention is used, the exposure head can be provided in a portion away from the cutter or magazine, and the degree of freedom in equipment design can be obtained.
(3) In 1st Embodiment and 2nd Embodiment, the conveyance means 15 and 151 are applicable not only to what is arrange | positioned just before an exposure part but to various places of a photographic processing apparatus. For example, in FIG. 1, if the photographic transport device of the second embodiment is provided in front of the printing unit 17, printing does not shift. At this time, it is possible to replace the conveying mechanism such as the roller pair 18c up to the printing unit 17 with a simple conveying means that allows a slight meandering. In FIG. 1, if the photographic conveyance device according to the second embodiment is provided in front of the processor unit 3, it is possible to adjust the posture of the photographic paper to be run in parallel. Further, in FIG. 1, if the photo transport device of the second embodiment is provided at the discharge port 5 of the finishing processing unit 4, the posture of the photographic printing paper discharged from the discharge port 5 can be adjusted.
[0042]
【The invention's effect】
As described above, according to the transport apparatus of claim 1 of the present invention, the transport means is Keeping the nip state The leading edge of the photographic paper is fed toward the nip portion of the pair of rollers that are stopped, and the conveyance of the photographic paper is continued until the leading edge is bent along the nip portion. Since the leading end along the nip portion is nipped and conveyed, the meandering of the photographic printing paper can be corrected at a predetermined position during the conveyance. Therefore, if there is a distance between the cutter and the exposure section, or if the distance between the magazine for storing the roller-shaped photographic printing paper and the cutter is long, etc., even if meandering occurs, the exposure section that requires parallelism in particular. You can correct the meander in front of you. As a result, restrictions on the arrangement of the equipment of the photo processing apparatus are reduced, and the equipment can be arranged in accordance with the characteristics of the equipment.
[0043]
According to the transport device of claim 2, since the transport device capable of correcting the meandering is provided in front of the exposure unit, the arrangement of the cutter and the magazine up to the exposure unit can be freely performed, and the transport up to the exposure unit is performed. The type of means can also be freely selected.
[0044]
According to the transport apparatus of claim 3, when two or more photographic printing papers are transported in parallel, since the timing of sending the two or more photographic printing papers to the exposure unit can be aligned in addition to meandering, the exposure processing in the exposure unit Does not cause a deviation in the transport direction.
[0045]
According to the transport device of claim 4, when the exposure processing of the digital line exposure head is enhanced by parallel processing, an image is formed at a predetermined position on the photographic printing paper in order to correct meandering during parallel transport immediately before the exposure section. Can be exposed. In addition, since the timing of sending two or more photographic printing papers to the exposure unit is aligned, complicated program processing such as adjustment of the image drawing timing for the digital line exposure head is not required.
[0046]
According to the transport device of claim 5, the photographic printing paper can be transported not only in the transport direction but also in the direction perpendicular to the transport direction by the transport device using the chuck that is movable in the direction perpendicular to the transport direction. Rearrangement of the photographic printing paper to parallel conveyance can be performed during conveyance. In this case, even if meandering occurs on the photographic paper due to the adjustment of the chuck, the meandering can be easily corrected by pushing into the pair of rollers.
[0047]
According to the conveyance device of the sixth aspect, since the bending of the photographic paper toward the nip portion of the pair of rollers is guided by the guide member, the leading end of the photographic paper is easily aligned with the nip portion, and the meandering adjustment is ensured. Done.
[0048]
According to the conveying device of claim 7, when the leading end of the photographic paper is fed toward the nip portion of the pair of stopped rollers, the photographic paper is generated when the guide member causes the deflection in a predetermined direction. Thus, the proper quality of the finished photograph can be maintained without damaging the emulsion on the exposed surface.
[Brief description of the drawings]
FIG. 1 is a structural diagram showing an apparatus arrangement of an example of a photographic processing apparatus in which a transport apparatus according to a first embodiment is incorporated.
FIG. 2 is a block diagram of control of the photographic processing apparatus shown in FIG.
FIG. 3 is a diagram showing the configuration and operation of the first embodiment of the transport apparatus of the present invention.
4 is an operation diagram illustrating an operation of a parallel chuck of the transport device of FIG. 3;
FIG. 5 is a perspective view showing an external structure of a transport apparatus according to a second embodiment.
6 is a side view showing a structure for attaching a guide member to the conveying apparatus of FIG. 5;
[Explanation of symbols]
1 Photo processing device
6,6a, 6b Photographic paper
6c Tip
15 Transport device
19 Control unit (control means)
24 PLZT printer head (exposure section)
31 Chucker (transportation means)
32 A pair of rollers
32c Nip part
34, 34a-34d grip
151 Conveyor
191 Control unit (control means)
311 Roller pair (conveying means)
321 A pair of rollers
321c Nip part
351 First guide member
352 Second guide member
353 Sliding member

Claims (7)

A transport unit positioned upstream of the photographic paper to be transported, and a pair of rollers positioned downstream of the transport unit to nip and transport the photographic paper ; The tip of the photographic paper is fed toward the nip portion of the pair of rollers that are stopped while being held, and the conveyance of the photographic paper is continued until the tip is bent along the nip portion. The roller is a photographic paper transporting device that nips and transports the leading end along the nip portion.   The photographic paper transport device according to claim 1, wherein the pair of rollers is provided in front of the exposure unit.   2. The photographic paper transport apparatus according to claim 1, wherein the transport means and the pair of rollers transport two or more of the photographic papers in parallel.   4. The photographic printing paper transport device according to claim 3, wherein the pair of rollers are provided in front of an exposure unit having a digital line exposure head.   2. A photographic paper transport apparatus according to claim 1, wherein the transport means chucks and transports the photographic paper.   2. The photographic paper transport device according to claim 1, wherein a guide member for guiding the bending of the photographic paper is provided between the pair of rollers and the transport device.   The guide member is formed so as to bend so that an exposure surface of the photographic paper is convex, and a sliding member is attached or a space is provided on a portion of the guide member that contacts the exposure surface of the photographic paper. 7. A photographic paper conveying apparatus as claimed in claim 6.

Images