JP3378861B2 - Photosensitive material scanning exposure equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for scanning and exposing a photosensitive material.
To form a latent image and develop it to form a positive image.
And a photosensitive material scanning exposure apparatus for forming
In addition, the scanning exposure of the photosensitive material conveyed
Transport mechanism to prevent disturbance due to exposure mechanism and transport
Related to the sending mechanism. [0002] 2. Description of the Related Art Photosensitive materials called minilabs and photographic printers
The material processing unit exposes the photosensitive material to form a latent image.
Section, development processing section for development, fixing and washing, and drying section.
I have. Exposure of the photosensitive material uses the transmitted light of the negative film.
This is done by irradiating the photosensitive material, through surface exposure and slits
Scanning exposure to be performed. For exposure and development, the photosensitive material is exposed
Is transferred to the development processing section from
The photosensitive material formed in a sheet is sequentially conveyed at a predetermined interval.
Exposure / development process is carried out while keeping the roll shape.
There is a method of cutting and finishing to a predetermined length with a cutter. Conventionally, exposure of a light-sensitive material has been carried out through a negative film.
It was performed analogously due to overlight, but recently
Based on the image information obtained by reading the
Scans and exposes photosensitive material digitally by modulating laser light
It has become. However, digital scanning exposure
Light requires high precision in positioning and transporting photosensitive materials.
Support for existing positioning and guide mechanisms
Used the characteristics of digital scanning exposure.
It became clear that it could not be demonstrated in minutes. That is, analog
Digital scanning exposure is more sophisticated than digital exposure.
Many problems that need to be solved
There was found. [0004] SUMMARY OF THE INVENTION In transporting a photosensitive material,
In other words, conventionally, exposure is performed after forming a sheet.
However, after exposure, the individual
It is necessary to set a predetermined interval between sheet-like photosensitive materials.
is there. For example, when conveying a 100 mm sheet,
It is necessary to keep an interval of 30mm, such as exposure and development
In order to speed up the series of processes, the transport speed must be increased.
Therefore, the whole photosensitive material processing apparatus becomes large.
I was In addition, a sheet of photosensitive material is continuously arranged at predetermined intervals.
The reliability of the transfer was not good because it was conveyed in a reliable manner. [0005] As a means for solving such a problem, a sense
The optical material is not formed in a sheet shape but remains in a strip shape,
A method of transporting as it is can be considered. Keep photosensitive material long
If it is conveyed, the interval between frames on which a latent image is formed is set to, for example, 3
mm and the same transport speed
In this case, the processing capacity should be improved by about 30%
Can be. However, the photosensitive material is transported to the exposure section as it is long.
If this occurs, disturbances such as vibration of the transport mechanism are transmitted to the photosensitive material.
And the photosensitive material meanders and shakes, resulting in good scanning
Exposure cannot be performed. That is, keep the photosensitive material
To perform good scanning exposure by transporting,
Therefore, it is necessary to take measures to prevent disturbance. [0006] In addition, a mask for identifying image information is provided on the photosensitive material.
Mark so that exposure is performed based on this mark.
Has become. However, if the photosensitive material is strip-shaped, for example,
Vibration, such as when a punch mark is formed
It is transmitted to the optical material and adversely affects the scanning exposure. Furthermore, the shape
In order to perform exposure based on the formed mark, image information is required.
It is necessary to form the mark first based on the information. Also,
After one unit is exposed, the next unit is exposed.
It takes time and effort to input image information.
At this time, if the photosensitive material is still transported,
The photosensitive material is wasted because a minute is conveyed. Change
In addition, the development processing section performs image processing in order to perform stable development processing.
It is possible to continue driving while inputting information
desirable. Therefore, when inputting image information,
Without wasting photosensitive material and continuing the development process.
It requires a transfer mechanism to obtain it. Many photosensitive material processing equipment
Each member has a unique resonance frequency
ing. Therefore, especially in the exposed area,
Configure to perform scanning exposure with low vibration by shifting the number
There is a need. An object of the present invention is to transport a photosensitive material as it is long.
Scanning and exposing, and
Exposure means for performing scanning exposure without being affected by external disturbance
The present invention is to provide a photosensitive material scanning exposure apparatus having the same. [0008] According to the present invention, the above objects are attained.
Can be achieved by the following configuration. Photosensitive material
Transport means for transporting the photosensitive material along a predetermined route;
Exposure means for forming a latent image by exposing based on information
In a photosensitive material scanning exposure apparatus, the photosensitive material is elongated.
In the state of being supplied to the transporting means and transporting it in a long form.
Along with this transport routeAnd by the exposure meansThe feeling
Form a latent image by scanning and exposing while transporting optical materialone
WhoUpstream and downstream of the exposure meanssoConveyed to the photosensitive material
Loop forming means for forming a loop that serves as a buffer at the timeBut
Provided, The loop forming means,Put the photosensitive material in close contact
And the photosensitive material transport direction of the drum
On the downstream side and downstream side,Loop formation of photosensitive materialBend in the direction
Sea urchinA pair of nip rollers provided at an angle,Each of the aboveNip
Roller pairdrum~ sideEach ofAlong the transport path
The fixed member and the fixed member are opposed to each other at a predetermined interval.
From the closed state to the open state that opens to the loop forming side.
And a guide member made of a movable member.
When transporting linearly along the transport path, the movable
The member is placed in a closed state opposed to the fixing member, and the photosensitive material
When forming a material loop, the movable member is in an open state.
To rotate the nip roller pair and the drumAnd times
StopPhotosensitive material characterized by forming a loop by
Scanning exposure equipment. In the photosensitive material scanning exposure apparatus,
The optical material is transported as it is long and in the transport path.
Photosensitive material upstream and downstream of the exposure means
Is configured to form a loop in the
Even if disturbance such as temporary stop occurs in the material,
Good scanning exposure can be performed without being affected by disturbance.
You. [0010] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
explain. In the description of the embodiment, FIGS.
5, a photosensitive material processing apparatus (photosensitive
Material scanning exposure apparatus) 1 (hereinafter simply abbreviated as processing apparatus)
) Will be described. Processing equipment
1 shows a photosensitive material A in a case 2 as shown in FIG.
Processing unit 3, developing processing unit 4, which performs exposure processing, etc.
Section 5 and a cutter 6 are provided.
From the magazine 7 to the processing apparatus 1 as a strip, that is, as a long strip
Supplied. The exposure processing unit 3 includes a photosensitive material as shown in FIG.
Transport mechanism 11 for transporting material A, hole punch 21, photosensitive
Form a latent image by scanning and exposing material A with laser light
Exposure unit 31 prints frame numbers etc. on the back of the latent image forming surface
By the back printer 17, the reservoir 61, etc.
It is configured. The transport mechanism 11 includes a pair of nip rollers 12a-1
2g, composed of guide members 13 and 14,
Roller pairs 12a to 12g can be controlled to rotate and stop rotating
It has become. The nip roller pairs 12a to 12
For example, the rotation of g is stopped when the photosensitive material A is conveyed.
This will be described later in detail. The hole punch 21
The hole that indicates the exposure start position based on the
The mark is formed on the optical material A.
Not limited to perforation
It may be formed by a linter or the like. The exposure unit 31 is
A material A is scanned and exposed by a laser to form a latent image.
The image information for driving the laser is
Supplied from the re-circuit. The scanning exposure is shown in FIG.
The scanning is performed in the width direction of the photosensitive material A.
The conveyance of the photosensitive material A is called sub-scanning. For photosensitive material A
Exposure is performed without stopping photosensitive material A
However, since the laser beam has a beam diameter of about 60 μm,
Even if a latent image is formed while being conveyed, there is no visual problem. The structure of the exposure unit 31 will be described further.
And a large diameter window around which the photosensitive material A is wound as shown in FIG.
A ram 32, which brings the photosensitive material A into close contact with the drum 32;
Conveying rollers 33a, 33b, sensor 34, scanning dew
It is composed of an optical unit 35 and the like. Also the drum
32, that is, the conveying direction of the photosensitive material A (the sub-scanning direction).
In the upstream and downstream sides of
Guide members 36 and 37 for assistance are provided.
You. Regarding the configuration and operation of the guide members 36 and 37,
This will be described later together with the transport of the optical material A. Next, the transportation and exposure operation of the photosensitive material A will be described.
Will be explained. At the start of exposure, the nip roller 12
a to 12 g, the drum 32, the rollers 33a and 33b
The photosensitive material A is driven to rotate as shown at time t1 in FIG.
Set to a state where it can be transported. Magazine 7 to photosensitive material A
Is pulled out and sandwiched between the nip rollers 12a.
The photosensitive material A is kept long by the rotation of the nip roller 12a.
It is pulled out and changes direction along the guide member 13 and
2 and FIG.
Are conveyed linearly as indicated by X in FIG. And photosensitive material
The tip of the material A is provided on the downstream side of the nip roller 12d.
When detected by the circuit 15, the time t2 shown in FIG.
Rotate the nip rollers 12b to 12e and the drum 32
At the same time as stopping, the guide member 13 is shown by an imaginary line in FIG.
Open as you like. However, the nip roller 12a rotates
Photosensitive material A is continuously pulled out of magazine 7
As a result, the direction changes until the loop sensor turns on.
A loop indicated by an imaginary line is formed in the replacement part. Predetermined amount of roux
When the movable member 36a is formed in the direction changing portion, the movable member 36a is opened.
Then, the nip rollers 12b and 12c are rotationally driven.
You. As a result, a loop indicated by Y1 is provided on the upstream side of the drum 32.
Is formed. The size of the loop Y1 depends on the photosensitive
It is proportional to the length of the material A, and the length is the nip rollers 12a-1
Can be set by 2c rotation speed or time
You. Then, at time t3 when the loop Y1 has reached a predetermined size.
When the drum 32 and the rollers 33a and 33b are rotated with
The optical material A is transported to the downstream side of the drum 32,
The rotation of the drum 32
A loop Y2 is also formed on the downstream side. Note that loop Y
1. The size of Y2 may be large or small as shown in FIG.
Alternatively, the sizes may be substantially the same as shown in FIG. Here, the guide members 36 and 37 and the
The rollers 12c and 12d will be described. Nip roller 1
2c and 12d are such that the photosensitive material A is transported linearly.
Not provided, desired to bend in the direction of loop formation
It is provided in a state inclined at the angle θ. Meanwhile, the guide
The members 36 and 37 include a movable member 36a, 37a and a fixed member.
36b and 37b so that the photosensitive material A can pass through
They are arranged facing each other with a gap. And movable parts
The materials 36a and 37b are used to transport the photosensitive material A linearly.
In other words, as shown by imaginary lines in FIG.
And are shown when forming the loops Y1 and Y2.
Drive to the open state as shown by the solid line
Be moved. Therefore, when the photosensitive material A is transported linearly,
Indicates that the nip roller 12c is inclined at an angle θ.
However, the drum 32 and the drum 32 are guided by the guide member 36.
Guide so that it is securely sandwiched between
Is done. When the photosensitive material A is transported linearly, the nip
Release the nip of rollers 33a and 33b and simultaneously regulate the width
After the guide 38 is opened and the loops Y1 and Y2 are formed,
After the photosensitive material A is positioned by the width regulating guide 38, d.
Between rollers 32a and 33b.
The photosensitive material A is nipped at the position. Conveyed downstream of drum 32 and roller 33b
The light-sensitive material A is transferred to the closed guide member 37.
Guided and securely pinched between the nip rollers 12d
Transported as Therefore, the movable members 36a, 37a
Is opened, the nip rollers 12c and 12d are inclined at an angle θ.
Since it is attached, the loop of photosensitive material A can be easily formed.
Becomes easier. After forming the loops Y1 and Y2, after the time t4
Nip rollers 12d to 12g are rotationally driven as shown below
Then, the photosensitive material A moves downstream from the nip roller 12d.
It will be transported. However, the nip rollers 12a-
Since 12g is controlled to rotate at a constant speed, the loops Y1, Y
2 remains formed. After forming the loops Y1 and Y2, at time t5
The hole punch 21 is driven at the point, and as shown in FIG.
Such marks 22 are formed. Mark 22 is stamped
The mark is formed on the photosensitive material A by
It is performed while transporting. And the first formed mark
When 22 reaches the exposure unit 31, as shown at t6
The mark 34 is detected by the sensor 34 at t6.
FIG. 3 shows the state at time t7 after a predetermined time has elapsed from the time.
Exposure is performed as follows. The exposure time is based on the
It is set based on image information, and photosensitive material A is downstream even during exposure.
Transported to the side. The above operation is performed when the photosensitive material A is initially conveyed.
Regarding the first mark 22 and the first exposure,
Exposure is repeated at regular intervals based on image information input in advance.
It is performed successively. Therefore, before the first exposure,
Alternatively, the next mark 22 is formed even during the exposure.
However, according to the present embodiment, the sensitivity in the exposure unit 31 is
Do not stop the transport of the optical material A and adversely affect the exposure.
The mark 22 can be formed without deviating. Immediately
That is, the photosensitive material A is stopped at the mark forming position.
When the hole punch 21 is driven, the punch 21
Is extremely small only during the time when the photosensitive material A is inserted
The photosensitive material A was stopped forcibly
U. This temporary stop is a disturbance in view of the transportation of the photosensitive material A.
When this disturbance affects the exposure unit 31, the exposure becomes uneven.
Will occur. However, to form the loop Y1
Therefore, the exposed portion 31 has the loop Y1 portion formed earlier.
Disturbance is directly transmitted to the exposure unit 31
Absent. Therefore, even while the mark 22 is being formed, the exposed portion 3
In the case of 1, the exposure can be continued without disturbance. In the exposure section 31, the photosensitive material A is transported.
Is continued at the position where the hole punch 21 is formed.
The transport of the material A may be temporarily stopped. in this case,
Disturbances occur artificially, but the stop time is short.
The loop Y1 operates in the same manner as described above, and
The effect can be prevented. The sensor 34 is a light
To detect the presence or absence of the hole 22 by the reflection of
However, the light emitted has a wavelength at which the photosensitive material A is insensitive.
Used. Therefore, when the photosensitive material A is transported,
The light emitted from the circuit 15 irradiates the photosensitive material A
However, this light does not expose the photosensitive material A.
Thus, the formation of the first mark 22 and the subsequent exposure
And the next mark 22 is continuously formed. Therefore,
The photosensitive material A includes nip rollers 12d to 12e, a guide portion.
Nip roller 1 through the material 14 and the reservoir 61
It is transported to 2f and 12g. The photosensitive material A is processed next from a nip roller 12g.
In other words, the toner is transported to the developing section 4.
The schematic configuration and operation of the control unit 4 will be described with reference to FIG.
And then a reservoir provided in connection with the developing section 4.
A description will be given of the unit 61. The developing section 4 includes a developing tank 4
1. Bleaching tank 42, fixing tank 43, three washing tanks 44
The drying unit 5 is disposed downstream of the washing tank 44.
I have. Between the exposure processing unit 3 and the development processing unit 4 and further in each tank
A guide member etc. is provided between each tank
However, for convenience of illustration, the illustration of the guide member is omitted and the nip is
The rollers 45a and 45b, the guide roller 46 and the like are shown.
Was. In the exposure processing section 3, as described above, the exposure processing is performed.
The processed photosensitive material A is transferred from the nip roller 45a to the developing tank.
It is conveyed to 41 and immersed in a developer. Then guy
Transported to the bleaching tank 42 by the roller 46 and dipped in the bleaching solution.
After the immersion processing, the fixing tank 43 is
And is subjected to a fixing process. Next, the guide roller 46 is
The photosensitive material A transported to the washing tank 44 through the
It is transported to the drying unit 5. The drying section 5 transports the photosensitive material A.
And is designed to blow hot air.
The dried photosensitive material A is cut by the nip roller 45b.
-6 and cut into sheets of a predetermined size
After that, it is discharged out of the apparatus 1. As described above, the photosensitive material A starts from the exposure.
A series of processing including development processing and further cutting into sheets is performed.
Will be And, for example, 12 shots of film or 24 shots
After performing a series of processing on the film taken, etc.,
Need to input exposure data based on different films
There is a need for preparation time. Do this preparation
During this period, the operation of the exposure processing unit 3 is stopped.
It is desirable that the device 4 continues its operation. So this implementation
In the example, the reservoir unit 61 is provided and the developing process is performed.
In the meantime, data input for the next film can be performed.
It was configured so that: That is, the reservoir 61 rotates.
The rotation guide member 62 and the photosensitive material A are formed in a loop Y3.
And a holding unit 63 for holding. And photosensitive material
When the leading end of the material A is conveyed, the rotation guide member 6
2 is positioned at the Pa position shown in FIG.
Bridge between the downstream side of the nip and the nip roller 12f
To form As a result, the photosensitive material A moves the guide member 14
After it comes off, it is transported on the rotation guide member 62 and its tip is
The roller is sandwiched between the rollers 12f. next,
Temporarily stops rotation of nip roller 12f and rotates
The guide member 62 is rotated to the position Pb, and the photosensitive material A is held.
The loop Y3 as shown in FIG.
It is formed. The size of the loop Y3 is the transport amount of the photosensitive material A.
And the transport amount is determined by the nip roller 12e or the like.
It can be set according to the amount of rotation and time. Set in advance
Nip roller 12 after conveying the photosensitive material A of the
When f is rotated, a loop Y3 is formed in the photosensitive material A.
Transported to the development processing unit 4 in the
Then, the developing process is performed. And, for example, 12 shots
At the stage when the film was exposed, ie, one unit.
When the exposure process of the film is completed, the image information of the next film is
The exposure based on the information is performed,
It takes time. However, the provision of the reservoir 61
Exposure is performed based on the image information of the previous film
Photosensitive material A is held in the holding section 63 as a loop Y3.
The photosensitive material A in the loop Y3 is connected.
Subsequently, the sheet is transported to the development processing section 4. So the next film
Exposure processing unit 3 temporarily stops while inputting the image information of
To stop, but it is necessary to stop the drive of the developing unit 4.
The photosensitive material A is transported at a constant speed
Image processing can be performed. The method for forming the loop Y3 is limited to the above.
However, the following forming method is also possible. For example,
Conveying speed of photosensitive material A to nip rollers 12a to 12e
The transfer speed on the upstream side of the reservoir 61,
The transport speed after the roller 12f, that is, the reservoir 61
Is set to be faster than the transport speed on the downstream side of. This
If you do, a series of processes from exposure to development will be continued
During the operation, the speed on the upstream side and the downstream side of the reservoir 61 is
A loop corresponding to the difference is formed in the holding portion 63. However
However, in this method, when the number of processed sheets such as 12 sheets is small.
Means that the loop Y3 becomes smaller,
If the number is large, the loop Y3 becomes large,
It is necessary to set the speed difference taking into account the labor required for
is there. As described above, the photosensitive material processing shown in this embodiment is
According to the processing apparatus, the photosensitive material A is transported in a long state.
Also, disturbance during transport does not affect scanning exposure.
And good exposure and development processing can be performed. Soshi
As shown in FIG. 3, between the latent images formed by the exposure,
The interval between frames can be reduced to about 3 mm, for example.
In combination with continuous processing,
Can be. Next, referring to FIG. 6 and FIG.
Two embodiments will be described. Exposure is performed continuously,
It may be performed after the exposure is once stopped. So,
FIGS. 6A to 6D show the driving of the photosensitive material A and the like in the subsequent exposure.
This will be described with reference to FIG.
The exposure operation performed will be described with reference to FIGS. 7A to 7F. Figure
6A to 6F, the arrow X indicates the sub-transport direction of the photosensitive material A.
P1 indicates the position of the hole punch 21 with respect to the photosensitive material A.
Position, P2 is the detection position of the mark 22 by the sensor 34
Is shown. The mark 22 is for convenience of explanation.
Are added by the symbols a, b,.
The images are denoted by A1, A2,. As shown in FIG. 6A
While the latent image A1 is formed by exposure,
The mark 22a is detected, and illustration is omitted from this detection time.
The number of pulses is counted by the abbreviated counter.
You. During this time, the photosensitive material A is transported in the X direction.
Exposure for one frame is performed as shown in FIG. 6B, and the latent image A1 is exposed.
Exposure is completed. Then, based on the previously counted value,
And a predetermined distance, for example, 3 mm, is conveyed from the latent image A1.
After the exposure, the exposure of the next latent image A2 is started as shown in FIG. 6C.
Begun. Exposure is performed when the photosensitive material A is transported.
When the amount is conveyed, even during exposure, as shown in FIG.
The hole punch 21 is driven to form the mark 22d.
You. After the formation of the mark 22d, the exposure is continued as shown in FIG.
The latent image A2 is formed as shown in FIG. 6E.
During this operation, the next mark 22c is detected. here
6A and FIG. 6F, the latent image to be formed is A
1 to A2, and the detected mark changes from 22b to 22c.
I am. That is, based on the conveyance of the photosensitive material A, FIG.
The exposure operation from A to FIG. 6F is repeatedly performed. Next, referring to FIGS. 7A to 7F, intermittent exposure
Will be described. This intermittent exposure is, for example, one unit
Minute exposure nears end, input next image information
Applied when The photosensitive material A is transported in the X direction,
Exposure is performed at a position P3 to form a latent image A1.
However, at this stage, the next image data following the latent image A1
Has not been input. Soshi
When the exposure of the latent image A1 is completed, as shown in FIG.
It stops sending. Next, as shown in FIG.
Although the sheet is conveyed in the reverse direction, the reverse feed of the latent image A1
The next mark 22b sufficiently exceeds the position P2 of the sensor 34.
Stop in this state and enter the standby state.
You. During this standby state, the next point indicated by a dotted line in FIG.
, The image data corresponding to A3 or less
Is input. Next, the photosensitive material A is transported.
At this point, the latent image A1 is located at the exposure position P3.
No exposure operation is performed. The photosensitive material A is transported in this state
If you continue to do so, it has been moved backward as shown in FIG. 7E.
The mark 22b passes through the position P2 again.
The pulse counting is performed from the point of time. And first
The photosensitive material A is conveyed based on the counted number of pulses, and FIG.
Further conveyance is performed from the position shown in E, and indicated by A2
Exposure starts when the tip of the latent image forming position reaches position P3
Is performed, and the mark 22d is formed at the position P1.
It is. At this point, it becomes the same as in the case of continuous exposure, and FIG.
Exposure of the latent image A2 is performed as shown in FIG.
The next mark is formed at the time of A3.
You. Next, referring to FIG. 8, a third embodiment of the present invention will be described.
Will be described. In the description of the embodiments,
Use the reference signs and so on. In this embodiment, the position of the mark 22 is formed.
The mark 22a, 2
When forming 2b, 22c,...
The interval is set to the minimum specification length. For example, a latent image
If the length in the sub-scanning direction required for formation is 82 mm,
The length obtained by adding the length required for forming the mark 22 to the length of
Forming marks 22a, 22b,.
You. As shown in FIG.
When 2a is at the position of the sensor 34, the next next mark shape
So that the forming position waits at the position where the hole punch 21 is provided.
This is done by controlling. In the example shown, the marker
22b is positioned at the minimum specification length from the previous mark 22a.
The hole punch 21 is positioned at the
It means that it is waiting at the position of the small specification length. Whole bread
While the switch 21 is on standby, the next image information corresponds to the minimum specification length.
As soon as the corresponding image information is supplied to the memory circuit,
The punch 21 is actuated, and the mark
Is the minimum specification length. Also hole punch
21 is longer than the minimum specification length as the next image information while waiting
For example, panoramic image information is supplied to the memory circuit
Then, the hole punch 21 does not operate immediately. Hole punch
21 operates after the photosensitive material has been conveyed for a predetermined length, and
Mark so that the distance between the mark and the
Attach. When the mark is formed as described above,
The image information required for (2) is sufficient for two frames. That is,
Image information for performing exposure between marks 22a and 22b
Is stored in the first memory circuit, and from the mark 22b
The image information for performing the exposure between 22c is stored in the second memory
Store it on the road. First memo by transporting photosensitive material A
When the image information of the circuit is read out and exposed, the first
The next image information can be stored in the memory circuit. Soshi
The exposure between the marks 22b and 22c is repeated in the second memory cycle.
While performing based on the image information read from the road,
If the next image information is stored in the first memory circuit,
Exposure of frames after mark 22c is stored in the first memory circuit.
This can be performed based on the obtained image information. That is, two methods
Use memory circuits to store and read image information alternately
Exposure can be performed. Therefore, the image information is stored
The number of memory circuits to be used can be reduced, and the device 1 can be simplified.
Can be achieved. Next, a second embodiment of the present invention will be described with reference to FIGS.
Fourth embodiment will be described. System controller 71 (hereinafter
(Hereinafter simply abbreviated as a controller) includes the transport mechanism.
FIG. 9 is a diagram for comprehensively performing various controls of the device 1 shown in FIG.
Is mainly used for exposure corresponding to the meandering of the photosensitive material A.
The circuit configuration for this is shown. The memory circuit 72 stores image information.
Information, and store and read out image information.
In addition, the control to supply to the scanning exposure unit 35 is controlled.
This is performed by the roller 71. The drive circuit 73 includes a motor 74
Is performed by the controller 71.
Driving and stopping the motor 74 and the encoder 75
Is configured to perform constant speed control by the output signal Va of
I have. In this embodiment, the drum 32 is directly
Drive, i.e., direct drive
You. The sensors 76a and 76b are provided for the photosensitive material A.
This is for detecting a lateral movement, that is, meandering, and a detection signal Va
Alternatively, Vb or Va-Vb is supplied to the signal processing circuit 77.
You. The signal processing circuit 77 is provided when a meandering occurs in the photosensitive material A.
In this case, the control signal Vc corresponding to the meandering amount is
It is configured to supply to the generation circuit 78. Taimi
The scanning signal generation circuit 78 starts beam scanning for exposure.
Run the timing signal Vd for controlling the start timing.
The inspection exposure unit 35 is supplied. Next, the circuit operation corresponding to the meandering will be described.
The photosensitive material A being transported is meandering as shown by a solid line in FIG. 10A.
When transported without the sensor 76a, 76b
The output signal Va or Vb or Va−Vb becomes, for example, 0V.
ing. On the other hand, the photosensitive material A is meandering as indicated by the imaginary line.
Then, the output signal Va or Vb or Va−Vb becomes the snake.
It shows between T2 and T3 in FIG. 10B corresponding to the row direction.
And the voltage level changes according to the amount of meandering.
It will change. That is, the output signal Va or Vb or
Va-Vb detects the occurrence of meandering, the meandering amount, and the meandering direction.
Signal. Then, the signal processing circuit 77 outputs the output signal
A control signal Vc corresponding to Va or Vb or Va-Vb
The signal is supplied to the timing signal generation circuit 78. The timing signal generating circuit 78 includes a photosensitive material.
If A is transported normally, it will be between T1 in FIG. 10C.
Timing pulse at the reference start timing as shown
Generate TP. Timing pulse TP and reference pulse
Is constant. However, when meandering occurs, its direction
And the timing pulse corresponding to the meandering amount as shown in T2.
The reference start timing is based on the timing at which
To the timing or the timing
Start timing based on the timing at which the lus TP occurs
Hasten against As a result, the film for exposing the photosensitive material A is exposed.
The exposure start position of the
Is controlled in accordance with the switching pulse TP. Below, exposure start
The position control will be described.
If the material A does not meander, the timing pulse TP is
Since it coincides with the quasi-start timing, the start of scanning exposure
The positions will be aligned to the same position as shown in FIG. 11A.
You. On the other hand, the photosensitive material A meanders rightward.
The timing pulse TP as shown in T2.
The delay with respect to the quasi-start timing increases.
Therefore, one scan is completed as shown in FIG.
Inspection start timing is delayed and exposure start position is also delayed
You. However, the reference start time of the timing pulse TP
Since the delay time for the mining corresponds to the amount of meandering,
Based on one edge of photosensitive material A, from the same position
This means that scanning has started continuously. Photosensitive material A is on the left
In the meandering direction, as shown in T3, the timing pulse
Delay time from the standard TP start timing
One scan is completed as shown in FIG.
Thus, the timing for starting the next scan is accelerated. I
However, the time width of the timing pulse TP corresponds to the amount of meandering.
, So if one edge of the photosensitive material is used as a reference,
This means that scanning is started continuously from one position. this
When the meandering occurs in the photosensitive material A, the meandering direction
The exposure start position is controlled according to the amount of meandering.
The meandering position after the end is the same as in FIG.
Good exposure as well as the position where no
Become. The drum 32 is driven by a motor 74.
Although it is configured to be driven directly,
This is for the following reasons. That is, the drum 32
Use of a support mechanism, which is not shown, and gears and belts
The transport mechanisms and the like all have natural vibrations. And
For the vibration frequency f of the system consisting of the drum 32, belt, etc.
As shown in FIG. 12, the density unevenness viewing characteristics
1 is known to have the highest sensitivity for visually recognizing unevenness.
ing. Further, the drum 32 is driven by a belt,
When the deceleration drive is performed via a car, the drum 32
1 and the area with high sensitivity of the density unevenness visual recognition characteristics
It is difficult to avoid. In FIG. 12, the shaded area indicates uneven density.
Is an area that can be visually recognized. Therefore, in this embodiment, the drum
32 is shifted from the vicinity of f1 to, for example, the vicinity of f2.
Direct drive by motor 74 to move
And configured to be driven by the motor 74 with the optimal number of poles
did. As a result, whether the vibration frequency of the drum 32 is near f1
It shifts to low vibration, and good exposure can be performed.
Was. Generally, f1 = 10 Hz to 50 Hz, f2 = 0.
It is 1 Hz to 1 Hz. The embodiment of the present invention has been described above.
Akira is a mini-liner with integrated exposure processing unit 3 and development processing unit 4.
Not only is it applicable to
Can also be applied to For example, FIG.
The image processing unit 4 and the cutter 6 are separated from each other.
The photosensitive material A that has been exposed in the exposure processing section 3 is again
And stored in the developing unit 4 by hand.
You. Then, the developed photosensitive material A is stored in the magazine 7.
It is stored and attached to the cutter 6 manually. This species
In the configuration, the transport mechanism 11 and the exposure unit 31
The configuration is the same as that of the embodiment, but the reservoir is omitted.
be able to. Further, the exposure unit 31 does not necessarily
No need to use, as shown in Fig. 14
The photosensitive material A is not loosened by the pair 12A and 12B.
Nipping, running between nip roller pair 12A, 12B
The inspection exposure may be performed. In this case, the nip
Direct drive of roller pair 12B by motor
It is desirable. The mark 22 is limited to the hole as described above.
It can be formed by ink jet etc.
However, correspondingly, the sensor 34 also transmits light, reflects light,
It can be changed to an outside sensor or the like. Mark 2
2 may be replaced by the position of the sensor 34.
However, in this case, the photosensitive material A should be shaken.
Not so, the mark forming means is inkjet
Are preferred. Also, the exposure unit 31 and the like reduce vibration.
Incorporated into the device 1 via anti-vibration means such as anti-vibration rubber
It is. [0040] As described above, the sense according to the present invention is obtained.
Optical material scanning exposure equipment conveys photosensitive material as it is long
And an exposure step for performing scanning exposure in the transport path.
Steps, routes the photosensitive material upstream and downstream of the exposure means.
Loop forming means for forming a loop
Scanning exposure part even if disturbance such as temporary stop occurs in photosensitive material
It is possible to perform good scanning exposure without being affected by disturbance.
Wear.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic configuration diagram of a photosensitive material processing apparatus according to a first embodiment of the present invention. FIG. 2 is a configuration diagram of an exposure processing unit. FIG. 3 is a plan view showing exposure of a photosensitive material. FIG. 4 is an explanatory diagram illustrating a configuration of an exposure unit. FIG. 5 is a time chart showing the operation of conveying a photosensitive material, forming a mark, and exposing. FIG. 6 is an explanatory view showing continuous conveyance of a photosensitive material according to a second embodiment of the present invention. FIG. 7 is an explanatory diagram showing intermittent conveyance of a photosensitive material. FIG. 8 is an explanatory diagram showing another example of mark formation. FIG. 9 is a circuit diagram showing a configuration of a control system according to a third embodiment of the present invention. FIG. 10 is an explanatory diagram showing meandering detection of a photosensitive material and position control of scanning start. FIG. 11 is an explanatory diagram showing a position at which scanning exposure of a photosensitive material is started. FIG. 12 is a characteristic diagram showing a relationship between a vibration frequency and a density according to a fourth embodiment of the present invention. FIG. 13 is a configuration diagram of a photosensitive material processing apparatus showing another application example of the present invention. FIG. 14 is a system diagram showing another configuration example of the present invention. [Description of Signs] 1 photosensitive material processing apparatus (photosensitive material scanning exposure apparatus) 2 case 3 exposure processing section 4 development processing section 5 drying section 6 cutter 7 magazine 11 transport mechanisms 12A, 12B, 12a to 12g nip rollers 13, 14 guide members 15, 34 Sensor 17 Back printer 21 Hole punch 22 Mark 31 Exposure unit 32 Drum 33a, 33b Roller 35 Scanning exposure unit 61 Reservoir unit 71 System controller 72 Storage circuit 74 Motor 76a, 76b Sensor 77 Signal processing circuit 78 Timing pulse generation circuit A Photosensitive materials t1 to t7 Operating points Va, Vb, Vc Signal X Transport direction

Continuing on the front page (72) Inventor Kazuo Shioda 798 Miyadai, Kaisei-cho, Ashigara-gun, Kanagawa Fuji Photo Film Co., Ltd. (56) References JP-A-60-242445 (JP, A) JP-B-3-28427 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) G03B 27/00-27 / 80

Claims (1)

(57) [Claim 1] A photosensitive material comprising a transporting means for transporting a photosensitive material along a predetermined route, and an exposing means for exposing the photosensitive material based on image information to form a latent image. In the scanning exposure apparatus, the photosensitive material is supplied to the conveying means in a long form and is conveyed in the long form, and in the conveying path ,
While forming a latent image by scanning exposure while conveying the photosensitive material by the exposure means, a loop forming means for forming a loop of the buffer during transportation to the photosensitive material on the upstream side and the downstream side of the exposure means The loop forming means is provided so that the photosensitive material is tightly wound around the photosensitive material.
Drum, and upstream and downstream of the photosensitive material transport direction of the drum
A pair of nip rollers provided at an angle so as to bend in the loop forming direction of the photosensitive material, a fixed member disposed along a transport path on each of the drum sides of each of the nip roller pairs, and a predetermined interval between the fixed members. A guide member comprising a movable member that is driven from an opposed arrangement state to an open state that is opened to the loop forming side, wherein when the photosensitive material is transported linearly along the transport path, the movable member is When a loop of photosensitive material is formed in a closed state opposed to the fixed member and the movable member is opened, a loop is formed by rotating and stopping rotation of the nip roller pair and the drum. Photosensitive material scanning exposure equipment.