JPH1164987A - Photographic printer and exposure method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase capacity and to eliminate the futile use of a photosensitive material by enabling the reverse conveyance of the photosensitive material. SOLUTION: One end side of an endless belt 114 is wound on a motor 112 and a clutch 116 whose driving force transmission path is switched is arranged on the other side of the endless belt 114. Driving force is transmitted from the clutch 116 to a second carrying roller 34 for guiding a photographic printing paper 54, while holding it, through a gear train 132. A roller 68A is connected to driven-rotate with a motor 142 for generating the driving force. A friction belt 70 is rotatably installed in a position for holding the photographic printing paper 54 together with the roller 68A and the paper 54 is held between the roller 68A and the friction belt 70, so that the driving force of the roller 68A can be surely transmitted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographic printer and a method of exposing a photographic printer, which are capable of improving processing capacity and eliminating waste of photosensitive material.

[0002]

2. Description of the Related Art Image data of each frame of a negative film read by a scanner is temporarily stored in an image memory, and the image data is read out from the image memory and displayed on a liquid crystal panel to display several frames of images. There is known a technique for exposing the photographic paper to a photographic paper as a photosensitive material.

[0003] Using the image memory and the liquid crystal panel, each frame is arranged in a matrix and reduced and printed, so that it is possible to easily search what kind of photograph is taken on one developed negative film. There is a photo printer that can create an index print.

In this photographic printer, a conventional main exposure section for directly exposing an image recorded on a negative film to photographic paper, and a sub-exposure section for exposing an image stored in an image memory to photographic paper. Are arranged side by side along the transport path of the photographic paper, and the index print is arranged on the photographic paper after all the frames of the negative film.

Further, in the main exposure section, if a print of a normal size is exposed in the last frame due to the creation of prints of various sizes, a gap is generated between the last frame and the index print, and the final frame is wasted on photographic paper. Will occur.

[0006]

Therefore, when making this index print, before exposing the last frame, two to three exposures out of, for example, six exposures for making one index print are performed. The printing is performed in advance, and after the last frame is printed, the remaining portion of the index print is exposed to reduce waste of photographic paper.

However, if the exposure of the index print is started after exposing the final frame first, the processing ability can be improved since the exchange of the negative film can be performed during the exposure of the index print. Of photo printers.

In other words, in order to improve the processing capacity and eliminate waste of the photographic paper, the photosensitive material can be reversely conveyed.
It is considered very effective to start the exposure of the index print after exposing the last frame first.

The present invention has been made in consideration of the above facts, and has as its object to provide a photographic printer and a method of exposing a photographic printer in which the photosensitive material can be reversely conveyed so as to improve the processing capacity and eliminate waste of the photographic material. It is a second object of the present invention to provide a photographic printer and a method of exposing the photographic printer, which prevent a decrease in feeding accuracy of the photosensitive material due to reverse transport of the photosensitive material.

[0010]

According to a first aspect of the present invention, there is provided an exposure method for a photographic printer, comprising: a main exposure section for exposing an image recorded on a negative film to a long photosensitive material sent from a magazine; An exposure method for a photographic printer applied to a photographic printer having a sub-exposure unit that exposes an image stored in a memory located on the upstream side in a conveying direction of a photosensitive material from an exposure unit, and exposing the photosensitive material to the image. While transporting along the transport direction, the frames of the negative film are sequentially exposed to the photosensitive material in the main exposure section, and then the photosensitive material is transported in a direction opposite to the transport direction of the photosensitive material, and then in the sub-exposure section. The image stored in the memory is exposed to a region on the photosensitive material adjacent to the region exposed by the main exposure unit.

According to a second aspect of the present invention, there is provided an exposure method for a photographic printer, comprising: a main exposure section for exposing an image recorded on a negative film to a long photosensitive material sent from a magazine; A sub-exposure unit that exposes an image stored in the memory located on the upstream side in the conveyance direction to the photosensitive material; an upstream conveyance roller provided between the magazine and the sub-exposure unit; An exposure method for a photographic printer applied to a photographic printer having a downstream transport roller provided downstream, wherein a negative film frame is transported along a transport direction of a negative film by a main exposure section. In order, then start driving the upstream conveying roller, and then start driving the downstream conveying roller with a higher nip pressure than the upstream conveying roller. Feeling After transporting the material, and then transporting the photosensitive material until the unexposed portion on the photosensitive material exceeds the sub-exposure portion, stop the downstream transport roller and then stop the upstream transport roller, and The material transport is stopped, and then the photosensitive material is transported and stopped along the original transport direction by the amount of the photosensitive material transported beyond the sub-exposure section, and then stored in the memory at the sub-exposure section. The exposed image is exposed to a region on the photosensitive material adjacent to the region exposed by the main exposure unit.

According to a third aspect of the present invention, there is provided a photographic printer, comprising: a main exposure section for exposing an image recorded on a negative film to a long photosensitive material sent from a magazine; and an image stored in a memory to the photosensitive material. A photographic printer having a sub-exposure section, which is located upstream of the photosensitive material in the direction of conveyance of the photosensitive material with respect to these exposure sections, and an upstream-side transport roller for nipping the photosensitive material; A downstream transport roller that is located downstream in the transport direction and sandwiches the photosensitive material and has a higher nip pressure than the upstream transport roller.

The operation of the exposure method for a photographic printer according to the first aspect will be described below. The exposure method of the photographic printer according to the present invention is a main exposure unit that exposes an image recorded on a negative film to a long photosensitive material sent from a magazine, and an upstream side in the transport direction of the photosensitive material from the main exposure unit. The present invention is applied to a photographic printer having a sub-exposure unit for exposing an image stored in a memory to the photosensitive material.

First, the frames of the negative film are sequentially exposed to the photosensitive material in the main exposure section while transporting the photosensitive material along the transport direction, and then the photosensitive material is transported in a direction opposite to the transport direction of the photosensitive material.

[0015] Thereafter, an image stored in the memory is exposed in a sub-exposure section to an area on the photosensitive material adjacent to the area exposed in the main exposure section.

Therefore, after exposing the last frame of the negative film in the main exposure section first, the sub-exposure section is formed without forming a gap between the last frame and an image stored in the memory, for example, an image for index printing. Thus, the photosensitive material can be reversely conveyed so that the exposure of the image stored in the memory can be started, so that the processing capability of the photographic printer can be improved and the waste of the photosensitive material can be eliminated.

The operation of the exposure method for a photographic printer according to the present invention will be described below. This claim also operates in the same manner as claim 1, but in this claim, the upstream transport roller provided between the magazine and the sub-exposure unit, and the downstream transport roller provided downstream of the main exposure unit The nip pressure of the downstream transport roller is higher than the nip pressure of the upstream transport roller.

Therefore, when the photosensitive material is transported in a direction opposite to the transport direction of the photosensitive material toward the sub-exposure portion located upstream of the main exposure portion in the transport direction of the photosensitive material, the drive of the upstream transport roller is started. After starting the drive of the downstream transport roller and transporting the photosensitive material, and transporting the photosensitive material beyond the sub-exposure section, stop the downstream transport roller and then stop the upstream transport roller to stop the photosensitive material. Stop transferring material.

Further, an operation can be performed such that the photosensitive material is transported along the original transport direction by the amount of transport of the photosensitive material beyond the sub-exposure section.

That is, the nip pressure of the downstream transport roller is set higher than the nip pressure of the upstream transport roller, and the photosensitive material is moved ahead of the downstream transport roller at the start of the reverse transport in the reverse direction to the original transport direction. Then, the driving of the upstream transport roller is started, and the downstream transport roller is stopped prior to the upstream transport roller when stopping.

Accordingly, the photosensitive material is not loosened, and the photosensitive material slides on the upstream transport roller, so that not only the load is not applied to the photosensitive material but also the amount of rotation of the downstream transport roller is grasped. Thus, the transport amount of the photosensitive material can be controlled.

Further, since the photosensitive material is transported in the original transport direction at the end by the amount of transport of the photosensitive material beyond the sub-exposure section, the precision of feeding the photosensitive material is reduced due to the reverse transport of the photosensitive material. Can be prevented.

The operation of the photographic printer according to the third aspect will be described below. A photographic printer according to the present invention comprises a main exposure section for exposing an image recorded on a negative film to a long photosensitive material sent from a magazine and a sub-exposure section for exposing an image stored in a memory to the photosensitive material. Having.

Further, an upstream conveying roller for nipping the photosensitive material, which is located on the upstream side in the conveying direction of the photosensitive material with respect to these exposure units, is driven to rotate. Further, a downstream-side transport roller that sandwiches the photosensitive material and that is positioned downstream of the exposure unit in the transport direction of the photosensitive material is driven to rotate. The nip pressure of the downstream transport roller is higher than the nip pressure of the upstream transport roller.

Therefore, if the photographic printer of the present invention is applied with the exposure method of the first and second aspects and reversely transports the photosensitive material, it operates in the same manner as the first and second aspects, It is possible to improve the processing capacity of the photographic printer, to eliminate waste of the photosensitive material, and to prevent a decrease in the accuracy of feeding the photosensitive material due to the reverse transport of the photosensitive material.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below with reference to the drawings.

The configuration of the printer processor 10 as a photographic printer according to the present embodiment will be described with reference to FIGS. A printer processor 10 whose outside is covered with a casing 12 is provided with a printer unit 58 for exposing the main print and the index print as the sub print to the photographic paper, and developing, fixing, washing and drying the exposed photographic paper. And a processor unit 72 for performing each process.

First, the configuration of the printer section 58 will be described.
The printer processor 10 is provided with a work table 14 protruding from the casing 12 to the left in FIG.
And a keyboard 15 for the operator to input commands, data, and the like.

Below the work table 14, a main exposure light source section 36 is provided. A light source 38 is provided in the main exposure light source unit 36, and light emitted from the light source 38
Color-Correction Filter: C
Through the diffusion tube 42, the light reaches the negative film 16 set on the negative carrier 18.
CC filter 40 includes C (cyan), M (magenta), and Y
(Yellow), and each filter operates under the control of the CC filter control unit 39.
The insertion amount is variable on the optical axis of the light emitted from the light source 38.

A cover 44 is disposed downstream (upper side in FIG. 1) of the negative carrier 18.
Inside, a main exposure optical system 46 and a sub-exposure optical unit 22 for exposing a sub-print such as an index print are provided.

A half mirror 43 is arranged at the lowermost part of the main exposure optical system 46, and the light transmitted through the negative film 16 set on the negative carrier 18 reaches. An exposure lens 48 for changing the magnification of an image to be exposed and a black shutter 50 for blocking exposure light are arranged in this order on the downstream side of the optical path passing through the half mirror 43. On the downstream side of the black shutter 50, a mirror 51 that reflects the exposure light in a substantially right angle direction is arranged. The exposure light reflected by the mirror 51 is applied to a photographic paper 54, which is a photosensitive material set in an exposure chamber 52. Irradiation is performed, whereby the photographic paper 54 is exposed.

On the other hand, on the downstream side of the optical path reflected by the half mirror 43, a photometric lens 45 for changing the magnification of the photometric image is arranged. A mirror 47 is provided. In the direction in which light is reflected by the half mirror 47, a scanner 108 including an image sensor or the like is disposed.
The scanner 108 is connected to an image signal processing unit 102 that performs predetermined image processing on image data of each frame of the negative film 16 read by the scanner 108.

A simulator 104 as an image display device is connected to the image signal processing unit 102, and the simulator 104 is configured to generate an image of each frame of the negative film 16 based on a set condition. A print simulation image is displayed.

An image memory 106 for storing image data is connected to the image signal processing unit 102. The image signal processing unit 102 reads the image data of each frame of the negative film 16 read by the scanner 108. The image data is stored in the image memory 106 for each of the three color components.

A negative density measuring section 56 for measuring the image density of each frame of the negative film 16 is provided on the downstream side of the optical path passing through the half mirror 47. The negative density measuring section 56 has an image sensor. And a negative film 1 read by the scanner 56B.
Negative density measuring device 56A for measuring the image density of each frame of No. 6
And, is installed.

On the other hand, in the sub-exposure optical section 22, a light-emitting diode (not shown) as an exposure light source for index printing and a liquid crystal panel 31 are arranged. On an image display surface 37 (see FIG. 4) of the liquid crystal panel 31, a large number of pixels (not shown) capable of displaying white, black and their intermediate colors in 256 gradations by electrical means.
Are regularly arranged.

Further, an exposure lens 35 for changing the magnification of the index print image is disposed at a position adjacent to the liquid crystal panel 31, and the liquid crystal panel 31 has a sub-exposure optical section. A control unit (not shown) for monitoring and controlling various processing statuses at 22 is connected.

As described above, the sub-exposure optical section 22 reads out the image data of each frame of the negative film 16 stored in the image memory 106 and forms one index image data in which the frame images are arranged according to a predetermined rule. Then, an image corresponding to image data of predetermined several frames, for example, five frames (one column) of one formed index image data can be displayed on the liquid crystal panel 31.

Further, as shown in FIG. 3, at a position facing the main exposure optical system 46 in the exposure chamber 52, a main exposure section 26 for exposing an image recorded on the negative film 16 to photographic paper 54 is provided. The sub-exposure unit 28 that exposes the image stored in the image memory 106 to the photographic paper 54 is provided at a position facing the sub-exposure optical unit 22 in the exposure chamber 52. That is, in the exposure chamber 52, the sub-exposure section 28 and the main exposure section 26 are arranged side by side from the top, but the main exposure section 26 is formed of various sizes. A gap S exists between the end of the normal-size print at 26 and the end of the sub-exposure unit 28.

A main controller 20 for controlling and monitoring the entire printer processor 10 is provided below the exposure chamber 52. The main control unit 20 includes a CPU (not shown),
It comprises an AM, a ROM, an input / output controller and the like. The main control unit 20 is connected to the above-described CC filter control unit 39, negative density measuring device 56A, image signal processing unit 102, and control unit, and monitors and controls the operation of each of these components.

On the other hand, as shown in FIGS. 1 and 3, a mounting portion 60 is provided at a corner of the upper surface of the casing 12, and the photographic paper 54 is layered on the reel 62 on the mounting portion 60. A paper magazine 64 to be wound and stored is mounted.

As shown in FIGS. 5 and 6, near the mounting portion 60, one end of an endless belt 114 is wrapped around the motor 11 which is an upstream drive source for generating a driving force.
A clutch 116 is disposed on the other end side of the endless belt 114 so that the transmission path of the driving force is switched by a solenoid (not shown).

That is, a first gear 118 and a second gear 120 are mounted on the clutch 116 coaxially with each other.
8 and the second gear 120 are selectively connected to the motor 112.
It can be rotated by the driving force of.

On the other hand, the upper roller 32B and the lower roller 32A
Lower roller 3 of the first transport roller 32 made of
A driven gear 124 is provided coaxially with the lower roller 32A so as to rotate integrally with 2A, and the driving force of the motor 112 is transmitted from the first gear 118 to the driven gear 124 via the intermediate gear 122. It has become so.

For this reason, when the clutch 116 is switched and the first gear 118 is rotated, the first transport roller 32 is rotated.
Is driven and rotated by a motor 112 so that the photographic paper 54 is sent out to the exposure units 26 and 28 while being pinched from the paper magazine 64 by the driving force of the motor 112.

Further, the second gear 1 of the clutch 116
20 is meshed with a magazine gear 126 and a starting gear 132A which is a gear on the starting end of the gear train 132. The driving force is transmitted. In addition, the gear train 132 is configured such that a plurality of gears including a start gear 132A mesh with each other.

In the middle of the gear train 132, an electromagnetic clutch 134 also serving as a gear is arranged. The electromagnetic clutch 134 is movable by a built-in solenoid between a position where the driving force is transmitted and a position where the driving force is transmitted in the axial direction (perpendicular to the plane of the drawing) and the driving force is not transmitted. .

The upper roller 34B and the lower roller 34A
The second transport roller 34, which is an upstream transport roller for nipping and guiding the photographic paper 54, comprises
8 is located upstream of the photographic paper 54 in the transport direction. Then, the photographic paper 5 is moved by the second transport roller 34.
The nip pressure for pinching 4 is set to ² kgf / mm ² .

The gear train 1 is rotated so as to rotate integrally with the lower roller 34A on the lower side of the second transport roller 34.
A terminal gear 132B serving as a gear on the terminal side of the second roller 32 is coaxially provided with the lower roller 34A.
Is rotated, the second transport roller 34 can be driven and rotated.

A one-way clutch 136 capable of transmitting a driving force in only one direction is arranged in the lower roller 34A. For this reason, when the driving force is transmitted to the support shaft of the lower roller 34A in the clockwise direction, the outer peripheral surface of the lower roller 34A also rotates integrally. However, the driving force is not transmitted in the counterclockwise direction and freely. Will rotate.

From the above, as shown in FIG.
A first transport roller 32 is disposed in the vicinity of, and transports the photographic paper 54 to the exposure chamber 52 in a horizontal state while holding the photographic paper 54 therebetween.
Further, the photographic paper 54 is connected to the first transport roller 32 and the exposure unit 2.
It is wound around the second conveyance roller 34 disposed between the first and second transfer rollers 6 and 28, turned 90 degrees, and hangs down.

A first stock section 69 for guiding and stocking the photographic paper 54 in a substantially U-shape is provided between the first conveyance roller 32 and the second conveyance roller 34. .

Rollers 68A, 68B, 68C are disposed below the exposure units 26, 28 in the exposure chamber 52,
The printing paper 54 on which the image of the negative film 16 has been printed in step 2 is turned by approximately 90 degrees by each of the rollers 68A, 68B, 68C, and a processor unit 72 described later.
Transported to

The roller 68A, which is a downstream transport roller, is connected so as to be driven and rotated by a motor 142, which is a downstream drive source for generating a driving force. Further, a friction belt 70 is rotatably installed at a position sandwiching the roller 68A and the printing paper 54, and the printing paper 54 is sandwiched between the roller 68A and the friction belt 70 to reliably drive the roller 68A. Is transmitted.

That is, the roller 68A is connected to the exposure units 26, 2
8, the nip paper 54 is located on the downstream side in the transport direction of the photographic paper 54, and the nip pressure for nipping the photographic paper 54 between the roller 68A and the friction belt 70 at this time is 7 kgf /
mm ² , the nip pressure is higher than the nip pressure of the second transport roller 34, and the photographic paper 5 is
4 is allowed to slip.

The motor 142 and the motor 11
2 is connected to the main control unit 20 and the main control unit 20 controls the driving.

From the above, the photographic paper 54 is transferred to the paper magazine 6.
At the time of auto-loading and replenishment from the inside, the gear train 132 is cut off by the electromagnetic clutch 134, and the second transport roller 34 rotates freely. further,
As shown in FIG. 7, the driving force from the motor 112 causes the first transport roller 32 to transfer the printing paper 54 to the paper magazine 64.
Side to the exposing units 26 and 28, and at this time, the second conveying roller 34 disposed between the first conveying roller 32 and the exposing units 26 and 28 rotates freely, and the printing paper 54 is moved. invite.

When it is necessary to rewind the photographic paper 54, such as in reverse conveyance, the clutch 116 and the electromagnetic clutch 1
34 are simultaneously switched, and the second gear 1
As a result of the driving force of the motor 112 being transmitted to the second transport roller 34 via the gear train 20 and the gear train 132, the second transport roller 34 is rotated by the motor 112 and the roller 68A is rotated by the motor 142. Then, the photographic paper 54 is transported to return to the first transport roller 32 side.

A cutter 71 is disposed downstream of the roller 68A. The cutter 71 cuts the rear end of the photographic paper 54 on which the exposure processing has been completed. The printing paper 54 that has been cut by the cutter 71 and remains in the exposure chamber 52 can be rewound back to the paper magazine 64.

That is, when the printing paper 54 is rewound to the paper magazine 64, the motor 112 is driven and the clutch 116 is switched, and the paper 116 in the paper magazine 64 is switched via the second gear 120 and the magazine gear 126. The driving force is transmitted to the reel 62, and the reel 62 rotates so as to wind up the printing paper 54.

At this time, since the clutch 116 is switched for the first transport roller 32 and the one-way clutch 136 is disposed for the second transport roller 34, the first transport roller 32 has difficulty in winding the photographic paper 54. Never come.

A second stock section 73 is provided between the rollers 68A and 68B for guiding and printing the baked photographic paper 54 in a substantially U-shape. The second stock unit 73 absorbs the difference in processing time between the printer unit 58 and the processor unit 72 by stocking the printing paper 54.

Next, the configuration of the processor section 72 will be described. As shown in FIG. 1, the processor section 72 includes a color developing processing tank 74 storing a color developing processing liquid, a bleach-fixing processing tank 76 storing a bleach-fixing processing liquid, and a plurality of washing processing liquids. A rinsing tank 78 is provided, and the photographic paper 54 is sequentially transported through a color developing tank 74, a bleach-fixing tank 76, and a plurality of rinsing tanks 78, so that the developing, fixing, and rinsing processes are sequentially performed. Done. The water-washed photographic paper 54 is conveyed to a drying section 80 adjacent to the rinsing tank 78. In the drying section 80, the photographic paper 54 is wound around rollers and exposed to high-temperature air to be dried.

The printing paper 54 is sandwiched between a pair of rollers (not shown), and is discharged from the drying unit 80 at a constant speed after the completion of the drying process. A cutter section 84 is provided on the downstream side of the drying section 80. The cutter section 84 has a cut mark sensor 86 for detecting a cut mark provided on the photographic paper 54.
And a paper density measuring unit 90 for measuring the density of the photographic paper 54 and a cutter 88 for cutting the photographic paper 54. The cut mark sensor 86, the paper density measuring unit 90, and the cutter 88 are respectively connected to the main control unit 20.
It is connected to the. In the cutter section 84, the printing paper 54 is cut by the cutter 88 for each image frame, and a photographic print is completed.

The completed photographic prints are discharged to a sorter unit 92, where they are sorted and a predetermined verification operation is performed. After the defective work such as so-called out-of-focus is removed by this inspection work, the normal photographic print is returned to the customer together with the negative film.

Next, the operation of the present embodiment will be described. The printer processor 10 of the present embodiment includes a main exposure unit 26 for exposing an image recorded on the negative film 16 to a long photographic paper 54 sent from a paper magazine 64, and a photographic paper 54 from the main exposure unit 26. And a sub-exposure section 28 which is located on the upstream side in the transport direction of the photographic paper 54 and exposes the image stored in the image memory 106 to the photographic paper 54.

For this reason, the exposure processing in the main exposure section 26 of the printer processor 10 will be described first.

With the black shutter 50 closed, the negative film 16 on which an image to be printed is recorded is set on the negative carrier 18, the light source 38 is turned on, and the negative film 16 formed by the light transmitted through the negative film 16 is formed. Is measured by the negative density measuring unit 56. Based on the measured density of the image on the negative film 16, the main control unit 20 sets appropriate exposure conditions (for example, the filter unit 4).
0, etc.). Next, the black shutter 50 is opened, and the image on the negative film 16 is exposed on the photographic paper 54 based on the set exposure conditions.

When exposing the negative film 16, the image of the negative film 16 formed by the light transmitted through the negative film 16 is sequentially read by the scanner 108. Then, the read image data is stored in the image memory 106 by the image signal processing unit 102.

Further, when the exposure of one negative film 16 is completed and the index print is exposed on the photographic paper 54 as the exposure processing in the sub-exposure section 28, the sub-exposure optical section 22 The image data for each frame is read out and exposed to the photographic paper 54.

By repeating this, the images of the index prints to be printed are sequentially exposed on the photographic paper 54 as shown in FIG. 10, and finally all the frames of one image on the negative film 16 are exposed. Is exposed on the photographic paper 54.

On the other hand, in the present embodiment, the exposure units 26, 2 are provided between the paper magazine 64 and the sub-exposure unit 28.
8 is located on the upstream side in the transport direction of the photographic paper 54 with respect to
And a roller 68A provided downstream of the main exposure section 26 and positioned downstream of the exposure sections 26 and 28 in the transport direction of the photographic paper 54. The nip pressure is higher than the nip pressure of the second transport roller 34.

Next, the procedure of the exposure method according to the present embodiment will be specifically described below. First, the photographic paper 54 is sequentially exposed on the photographic paper 54 by the main exposure section 26 while the photographic paper 54 is transported along the transport direction, and the frame of one negative film 16 on which an image is recorded up to the last frame.

Thereafter, the index print is exposed. At this time, as shown in FIG.
In order to prevent the occurrence of image formation, the second conveying roller 34 is rotated by the motor 112 as shown in FIG. 8, and the roller 68A shown in FIG. The photographic paper 54 is transported in a direction opposite to the transport direction of the photographic paper 54 toward the sub-exposure unit 28 located on the upstream side in the transport direction.

At this time, the driving of the roller 68A is started several tens of milliseconds after the driving of the second conveying roller 34 is started, and the photographic paper 54 is conveyed.
With the photographic paper 54 being further conveyed by a few millimeters, the second conveyance roller 34 is stopped several tens of milliseconds after stopping the roller 68A, and the conveyance of the photographic paper 54 is stopped.

Further, the first transport roller 32 and the roller 68A are driven and rotated by the motors 112 and 142 by an amount corresponding to the extra transport of the photographic paper 54 by a few mm from the gap S, so that the photographic paper 54 is returned to the original. After being transported in the transport direction, the image stored in the image memory 106 is index-printed by the sub-exposure unit 28 at the position on the photographic paper 54 next to the last frame as shown in FIG. Expose.

At this time, the transmission of the driving force to the second conveying roller 34 is cut off by the electromagnetic clutch 134, and the second conveying roller 34 idles by the one-way clutch 136.

As described above, after the last frame of the negative film 16 is first exposed by the main exposure section 26, the sub-exposure section 28 does not create a gap between the negative print and the index print, and Since the printing paper 54 can be reversely conveyed so that the exposure can be started, the processing capability of the printer processor 10 can be improved and the printing paper 54 can be eliminated.

Further, the nip pressure of the roller 68A is set higher than the nip pressure of the second transport roller 34, and
At the start of driving in the direction opposite to the original conveying direction, the driving of the second conveying roller 34 is started before the roller 68A, and at the time of stopping the roller 6
8A was stopped. For this reason, the printing paper 54 is not loosened, and the printing paper 54 is slid by the second transport roller 34, so that not only the load is not applied to the printing paper 54 but also the rotation amount of the roller 68A is grasped. Thus, the transport amount of the photographic paper 54 can be controlled.

Further, the photographic paper 54 is moved beyond the sub-exposure section 28.
Since the photographic paper 54 is finally conveyed in the original conveying direction by the amount of the photographic paper 54, it is possible to prevent a decrease in the feeding accuracy of the photographic paper 54 due to backlash or the like accompanying the reverse conveyance of the photographic paper 54. Was.

On the other hand, at the time of reverse transport in which the photographic paper 54 is transported in the direction opposite to the transport direction of the photographic paper 54, the first transport roller 32 uses the motor 112 for automatic loading and replenishment of the photographic paper 54 using the motor 112. Since the second transport roller 34 is driven and the photographic paper 54 is reversely transported by the drive rotation of the second transport roller 34, there is no need to additionally provide a motor 112 for reverse transport. .

Therefore, there is no need for a space for newly installing the motor 112, and it is not necessary to add a board for controlling the motor 112, so that the size and cost of the printer processor 10 can be reduced. Became. In connection with this, since the drive source of the second transport roller 34 is the motor 112, control for driving the second transport roller 34 is facilitated.

In this embodiment, the gear train 1 for transmitting the driving force from the motor 112 to the second transport roller 34
32 is disposed between the motor 112 and the second transport roller 34, the driving force can be easily transmitted to the second transport roller 34 without changing the position of the motor 112.
Further, the driving force can be transmitted more reliably than when the driving force is transmitted by a belt.

Further, in the present embodiment, the electromagnetic clutch 134 is disposed in the gear train 132 so that the transmission of the driving force can be stopped arbitrarily. In order to prevent the gear train 132 from becoming a load during automatic loading or the like in which the paper 54 is sent from the paper magazine 64 to the exposure units 26 and 28, the electromagnetic clutch 13 is used.
4, the transmission of rotation can be cut off.

The electromagnetic clutch 134 is connected to the clutch 1
By interlocking with the 16 solenoids, it is not necessary to add a board for the electromagnetic clutch 134 or change the software at all.

Next, the processing in the processor section 72 will be described. After the image to be printed is exposed on the photographic paper 54 as described above, the photographic paper 54 is
Are sequentially transported through the color developing tank 74, the bleach-fixing tank 76, and the plurality of rinsing tanks 78, so that the photographic paper 54 is sequentially subjected to the developing, fixing, and rinsing processes.
The photographic paper 54 that has been subjected to the water-washing process is conveyed to the drying unit 80, and is subjected to a drying process using high-temperature air. The dried photographic paper 54 is conveyed to the cutter unit 84 and cut by the cutter 88 for each image frame to form a photographic print. Then, the photographic prints are discharged to the sorter unit 90 and sorted in the sorter unit 90.

Note that the motors 112 and 142 of the above embodiment are used.
For example, a pulse motor can be employed, but another type of motor may be employed.

In the above embodiment, the light emitting diode is used as the light source for the index print of the sub-exposure optical section 22, but the light source 38, which is the light source of the main exposure optical system 46, may be used as the light source. good.

On the other hand, in the above-described embodiment, an example in which the present invention is applied to the printer processor having the sub-exposure optical unit has been described. However, a separate photographic print system, an image memory, and an image stored in the image memory are used. The present invention can also be applied to a liquid crystal photographic printer having a liquid crystal panel for displaying data and an exposure system capable of exposing an image displayed on the liquid crystal panel.

[0090]

As described above, the photographic printer and the exposure method of the photographic printer according to the present invention have an excellent effect that the photosensitive material can be reversely conveyed, thereby improving the processing capacity and eliminating waste of the photographic material. And an excellent effect of preventing a decrease in the precision of feeding the photosensitive material due to reverse transport of the photosensitive material.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a printer processor according to an embodiment.

FIG. 2 is a block diagram illustrating a configuration of a printer unit in the printer processor according to the embodiment.

FIG. 3 is an enlarged view of a main part of a printer unit in the printer processor according to the embodiment.

FIG. 4 is a perspective view illustrating an arrangement of a liquid crystal panel and an exposure lens of the printer processor of the embodiment.

FIG. 5 is an enlarged view of a main part of a printer unit in the printer processor according to the embodiment, and is a diagram illustrating a drive system of a transport roller.

FIG. 6 is an enlarged view of a main part showing a drive system of a transport roller according to the embodiment.

FIG. 7 is an enlarged view of a main part showing a drive system of the transport roller according to the embodiment, and shows a state in which a first transport roller is driven.

FIG. 8 is an enlarged view of a main part showing a drive system of the transport roller according to the embodiment, and is a diagram showing a state in which a second transport roller is driven.

FIG. 9 is a diagram illustrating a photographic paper on which only a normal print is exposed by the printer processor according to the embodiment;

FIG. 10 is a diagram illustrating a photographic paper on which a normal print and an index print are exposed by the printer processor according to the embodiment;

[Explanation of symbols]

 Reference Signs List 10 printer processor (photographic printer) 26 main exposure section 28 sub-exposure section 34 second transport roller 54 photographic paper (photosensitive material) 68A roller 112 motor 142 motor

Claims (3)

[Claims] 1. A main exposure section for exposing an image recorded on a negative film on a long photosensitive material sent from a magazine, and a main exposure section located upstream of the main exposure section in a conveying direction of the photosensitive material and stored in a memory. An exposure method for a photographic printer having a sub-exposure section for exposing a light-sensitive image on the photosensitive material, wherein the main exposure of the frame of the negative film is performed while the photosensitive material is transported in the transport direction. The photosensitive material is sequentially exposed to the photosensitive material in the area, then the photosensitive material is transported in a direction opposite to the transport direction of the photosensitive material, and then the image stored in the memory in the sub-exposure section is transferred to the area exposed in the main exposure section. An exposure method for a photographic printer, comprising exposing an area on an adjacent photosensitive material. 2. A main exposure section for exposing an image recorded on a negative film to a long photosensitive material sent from a magazine, and a main exposure section is located upstream of the main exposure section in a conveying direction of the photosensitive material and stored in a memory. A sub-exposure unit that exposes the formed image to the photosensitive material, an upstream conveyance roller provided between the magazine and the sub-exposure unit, and a downstream conveyance roller provided downstream of the main exposure unit. A method of exposing a photographic printer applied to a photographic printer, comprising: sequentially exposing a negative film frame to the photosensitive material in a main exposure section while transporting the photosensitive material along the transport direction; After starting to drive the transport roller, by starting to drive the downstream transport roller having a higher nip pressure than the upstream transport roller, the photosensitive material is transported in a direction opposite to the photosensitive material transport direction. On photosensitive material With the photosensitive material being conveyed until the unexposed portion of the photosensitive material exceeds the sub-exposed portion, the downstream conveying roller is stopped, then the upstream conveying roller is stopped, and the conveyance of the photosensitive material is stopped. The photosensitive material is transported along the original transport direction by the amount that the photosensitive material has been transported beyond the section and stopped, and then the image stored in the memory in the sub-exposure section is transferred to the area exposed in the main exposure section. An exposure method for a photographic printer, comprising exposing an area on an adjacent photosensitive material. 3. A main exposure section for exposing an image recorded on a negative film to a long photosensitive material sent from a magazine and a sub-exposure section for exposing an image stored in a memory to the photosensitive material. A photographic printer, comprising: an upstream transport roller that is located upstream of the exposure unit in the transport direction of the photosensitive material and nipping the photosensitive material; and a downstream printer that is located downstream of the exposure unit in the transport direction of the photosensitive material. And a downstream transport roller having a nip pressure higher than that of the upstream transport roller while holding the photosensitive material therebetween.