JPH11167165A - Method for aligning frame detection part of microfilm retrieving device and microfilm for alignment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance retrieving accuracy by making a microfilm on which a mark for alignment is imprinted pass a frame detection part, detecting film density at a specified position in a film width direction, and detecting and correcting the relative positional deviation in the film width direction between the frame detection part and the film. SOLUTION: The microfilm for alignment on which the mark for alignment is imprinted is made to pass the frame detection part 98, and the film density is detected by optical fibers 104 and 106 at the specified positions in the film width direction. By using the obtained detected result, the relative positional deviation in the film width direction between the film for alignment and the frame detection part 98 is detected and corrected. Namely, the output level of a photosensor 108 at the time of making the film for alignment travel is inputted in a positional deviation detection part 300. The detection part 300 detects the relative positional deviation between the frame detection part 98 and the film for alignment by using output from the photosensor 108 corresponding to the film for alignment to be used.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of aligning a frame detecting portion of a microfilm search apparatus for determining the presence or absence of a frame from a change in density in the running direction of a microfilm, and a frame detecting portion used directly for carrying out this method. And a positioning microfilm.

[0002]

2. Description of the Related Art In order to search for microfilms,
A device is known in which a search mark (blip) is attached to each frame at a position that does not overlap the traveling locus width of the frame, and the blip is detected and searched.

On the other hand, it has been considered that a search is performed by detecting the presence or absence of a frame instead of the blip. That is, a density sensor is provided within the width of the traveling locus of a frame, and the presence or absence of a frame is determined from a change in film density detected by the density sensor.

[0004]

In order to detect the presence or absence of a frame, the end faces of a pair of optical fibers are opposed to each other with the film interposed therebetween, and light incident on one of the optical fibers is guided to the film and transmitted through the film. It is conceivable that light is received by the other optical fiber and the amount of the received light is detected by an optical sensor.

In this case, it is necessary that the position where the optical fiber detects the density on the film is properly aligned with the running locus of the frame on the film. For example, detecting the change in density at different positions in the film width direction of the same frame with a plurality of pairs of optical fibers arranged in the film width direction, and determining the presence or absence of the frame by using a plurality of detection results to improve the frame search accuracy. Is considered. In such a case, it is necessary to accurately position the optical fibers and the film so that the film density detection positions of all the optical fibers do not deviate from the traveling locus of the frame.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to detect a relative position shift between a frame detecting section for detecting a film density at a predetermined position in a film width direction by an optical fiber and a film width position. It is a first object of the present invention to provide a method of aligning a frame detecting section which detects and corrects the relative positional deviation so as to improve search accuracy. It is a second object of the present invention to provide an alignment microfilm used directly for carrying out this method.

[0007]

According to the present invention, a first object is to provide a pair of optical fiber holding blocks which cross the microfilm in the width direction and face both surfaces of the microfilm, and one end of each of the optical fiber holding blocks which penetrates and is held by both blocks. A plurality of optical fibers whose end faces face each other across the microfilm, and a light source that guides light to the optical fibers held in one block,
A frame detection unit having a light sensor for detecting the amount of light incident on the optical fiber held by the other block, and determining the presence or absence of a frame based on a binarized signal obtained by binarizing the output of the optical sensor. A frame detection unit applied to a microfilm search device that searches for frames by using a microfilm on which a mark for alignment is imprinted is passed through the frame detection unit, and a predetermined position in a film width direction is determined. Detecting a film density by an optical fiber and detecting and correcting a relative positional deviation between the film and the frame detecting unit in a film width direction by using the detection result; , Is achieved.

Here, the relative displacement can be detected by various algorithms. This method will be described later in the section of the principle. In order to correct the obtained relative positional deviation, the position of the frame detection unit may be moved in the film width direction, or a guide for positioning the film in the film width direction may be moved. The relative positional deviation is zero while stopping or running through the positioning microfilm.
Can be determined manually or automatically. Once the film is passed, the relative positional deviation amount may be obtained by calculation, and the positional deviation may be corrected automatically or manually.

[0009]

[Principle] FIG. 12 is a diagram for explaining the first method. In FIG. 12, a position detecting mark 204 is printed on the positioning microfilm 200, with the center in the width direction as a boundary 202, one side of which is black and the other side is transparent. Reference numeral 206 (206A, 206B, 206C) denotes an optical sensor for detecting the film density. In actuality, the end face of the optical fiber connected to this optical sensor is located at this position.
However, since it is equivalent to the optical sensor 206 being at this position, the following description will be made assuming that the optical sensor 206 is located at this position.

[0010] There are three optical sensors 206, which are held at a fixed interval in the film width direction. When the film 200 travels leftward in FIG. 12 in such a state, the optical sensor 206 detects the film density while relatively moving rightward. Now the optical sensor 206B at the center is boundary 2
If it is located on the travel locus of 02, the output of the optical sensor 206A for detecting the density of the transparent portion indicates white, and the output of the optical sensor 206C for detecting the density of the black portion indicates black. The output of the central optical sensor 206B is gray. At this time, the film 200 may be stopped or running.

Therefore, if the output level of this optical sensor 206B becomes equal to the intermediate value of the output levels of the other optical sensors 206A and 206C, the central optical sensor 206B will move to the boundary 20.
It can be seen that the image was correctly aligned on the top 2, that is, the center of the film 200 in the width direction. If the output level of the optical sensor 206B is closer to the output level of the optical sensor 206A than this intermediate value, it can be understood that the optical sensor 206B is displaced from the correct position to the transparent side (upper side in FIG. 12). Conversely, if the output level of the optical sensor 206B is closer to the output level of the optical sensor 206C than this intermediate value, the optical sensor 2
06B has a position shift on the black side (the lower side in FIG. 12). In this way, the position of the optical sensor 206B can be correctly aligned with the boundary 202 (the center in the film width direction).

FIG. 13 is a diagram for explaining the second method.
In the micro-roll film 210 used here, a band-shaped alignment mark 212 having a fixed width is imprinted in the center in the width direction along the film length direction. 214 (2
14A, 214B, 214C) are optical sensors, the interval between the optical sensors 214A, 214C at both ends is the same as the width of the band of the mark 212, and the central optical sensor 214B is located between these optical sensors 214A, 214C. .

Therefore, when the central optical sensor 214B is located at the center of the film 210, the optical sensors 214B on both sides are located.
Since A and 214C are located on both edges of the band of the mark 212, the output levels of both optical sensors 214A and 214C are equal. If the optical sensor 214B is shifted from the center of the film 210, the output levels of the optical sensors 214A and 214C on both sides become uneven. The direction and amount of the displacement can be known from the sign and the magnitude of the difference between the output levels.
Correction of the relative positional deviation between the film and the film 210 may be performed.

FIG. 14 is a diagram for explaining the third method.
In the microfilm 220 used here, a line that periodically changes in the film length direction around the center line 222 in the width direction, for example, an alignment mark 224 formed of a sine curve (sine curve) is imprinted. I have. When the optical sensor 226 is located on the center line 222, the intervals at which the optical sensor 226 detects the sine line of the mark 224 are equal. However, if the optical sensor 226 deviates from the center line 222, the intervals for detecting the sine curve become unequal. Therefore, the optical sensor 226 is set so that the intervals are equal.
What is necessary is just to correct the relative position of the film 220 and.

If a sine curve is detected by using two or a plurality of optical sensors separated by a fixed distance in the film width direction, the direction and amount of the relative positional shift can be obtained by calculation. Therefore, the shift amount thus obtained may be corrected automatically or manually. According to this method, alignment can be performed using a signal obtained by binarizing the output of the optical sensor 226.

[0016]

FIG. 1 is a view showing a use state of an embodiment of a microfilm search apparatus to which the present invention is applied, FIG. 2 is a perspective view showing the inside of a scanner used here, and FIG. FIG. 4 is a side view showing an arrangement, FIG. 4 is a perspective view showing a line sensor driving section, FIG. 5 is a view showing a main part, and FIG.

In FIG. 1, reference numeral 10 denotes a computer main body, which incorporates a CPU and the like. Reference numeral 12 denotes a display means such as a CRT or a liquid crystal plate, and 14 denotes a keyboard, which are placed on a desk 16. Reference numeral 18 denotes a scanner housed under the desk 16, which incorporates the microfilm search device of the present invention. Reference numeral 20 denotes a printer placed beside the desk 16.

The scanner 18 has a cartridge insertion port 22 at an upper part of the front surface thereof.
4 (see FIGS. 2 and 3), the image of the micro-roll film 26 having a width of 16 mm is read at a low density. The read image is subjected to predetermined image processing by a CPU or the like in the computer main body 10 and then displayed on the display unit 12.

This image reading is performed while the line sensor 96 described below is stopped and only the film 26 is running.
In the meantime, the display means 12 of the CRT displays the read image while changing it continuously in synchronization with the running of the film 26. Therefore, the display on the display means 12 moves in synchronization with the running of the film 26, and an image substantially similar to that projected on the screen can be displayed on the display means 12.

At the time of manual search, the operator looks at the image on the display means 12 and instructs an output for an image that needs to be printed. Based on this output instruction, the scanner 18 sets the position of the frame to a correct position and reads the entire image with high-density image quality. This high-density image is printed out to the printer 20, stored in a memory such as a magneto-optical disk, or transferred to an external processing device.

At the time of automatic search, the address of the target frame is input from the keyboard 14. In this automatic search, a target frame is searched by detecting frames and counting the number of frames. This frame search is performed by using the determination result of the determination unit 112 described later indicating the presence or absence of the frame, and
16 is performed.

Next, the configuration of the scanner 18 will be described. The scanner 18 has a vertically long housing 28, and a supply-side reel drive unit 30 is provided above a front portion of the housing 28, and a take-up reel drive unit 32 is provided below the front portion. The supply-side reel drive unit 30 inserts the cartridge 2 into the cartridge insertion slot 22.
When the cartridge 4 is inserted, the cartridge 24 is automatically moved to engage the reel 24A with the rotating shaft. Further, the leading end of the film 26 is pulled out, sent downward, and guided to the take-up reel 32A of the take-up reel drive unit 32.

Here, as shown in FIGS. 2 and 3, the film 26 passes through the rear side of the gap between the respective reel driving units 30 and 32, that is, the rear side as viewed from the front of the housing 28. In FIG. 3, 34, 34,
36, 36 are guide rollers for the film 26. Accordingly, a space 38 is formed between the gap and the front panel 28A of the housing 28, and a light source unit 52 described later is accommodated therein.

The take-up reel drive section 32 has a drive belt 40 that runs in contact with the reel 32A as shown in FIG. This drive belt 40 is a guide roller 4
2, 44, a drive roller 46, an encoder 48, and a tension roller 50, and are driven by the drive roller 46 to travel in the film winding direction (the direction of the arrow). The encoder 48 controls a constant feed amount of the film 26 (for example, 0.1 m
m) to output a sampling signal.

Numeral 52 is a light source unit accommodated in the space 38 between the reel driving units 30 and 32,
It includes a reflecting mirror 56, a condenser lens 58, an appropriate filter, and the like. In FIG. 2, reference numeral 60 denotes a power supply circuit, and 62 denotes a power control circuit such as a motor.

Next, the line sensor driving section 64 will be described.
The line sensor driving section 64 is integrated with the projection lens 66. That is, as shown in FIGS. 3 and 4, the frame (rotating frame) 68 of the line sensor driving unit 64 is integrally formed with a cylindrical portion 70 for holding the projection lens 66.
The projection lens 66 held by the cylindrical portion 70 has a fixed focal point and a magnification of about twice. The cylindrical portion 70 is rotatably held by a frame (fixed frame) 72 fixed to the housing 28 so that the inclination of the image to be read can be corrected. Here, the cylinder 70 rotates about an optical axis 74 perpendicular to the film 26.

The cylindrical portion 70 of the rotating frame 68 and the pulley 76 of the servomotor 76 mounted on the fixed frame 72
A belt 78 is wound around A. The rotation frame 68 is rotatable around the optical axis 74 by the rotation of the motor 76.

As shown in FIG. 4, a movable base 80 is attached to the rotating frame 68 on a surface opposite to the cylindrical portion 70. That is, the movable base 80 is provided with a pair of guide rods 82, 82.
Slidably held by the optical axis 74 near the opening of the cylindrical portion 70.
Can be reciprocated in a direction orthogonal to.

A belt 86 wound around pulleys 84, 84 is provided on the rotating frame 68 in parallel with the reciprocating direction of the movable table 80.
And one side of the movable table 80 is fixed to the belt 86. One pulley 84 has a servo motor 8
The rotation of 8 is transmitted via the belt 90. As a result, by rotating the servo motor 88 forward and backward, the movable table 8 is rotated.
0 can be reciprocated on a plane orthogonal to the optical axis 74.

The movable table 80 has guide rods 82, 82
A long window 92 is formed in a direction perpendicular to the direction of the movable table 80, that is, in a direction perpendicular to the reciprocating direction of the movable table 80. This long window 92
Is located on the optical axis 74 in the longitudinal direction. A printed wiring board 94 is fixed to the rear surface of the movable base 80, that is, the surface opposite to the cylindrical portion 70 so as to be orthogonal to the optical axis 74.

A CCD line sensor 96 facing the long window 92 is fixed to the substrate 94 (FIG. 3). The substrate 94 is also provided with a preamplifier for amplifying the output of the line sensor 96. CCD line sensor 9
Of course, the light receiving surface of No. 6 coincides with the image forming surface of the projection image of the projection lens 66.

Next, an apparatus for detecting a frame, that is, a frame detecting section 98 will be described with reference to FIG. Microfilm 26
Upstream of the image reading position, that is, the position of the optical axis 74 (on the supply reel 24A side), a pair of optical fiber holding members that cross the film 26 in the width direction and oppose each other with a slight gap between both surfaces of the film 26. Blocks 100 and 102 are provided. Each of these blocks 100 and 102 has nine optical fibers 104 and
106 is inserted.

The optical fibers 104 and 106 are arranged perpendicular to the film 26 in the blocks 100 and 10.
2 and these end faces face each other with the film 26 interposed therebetween. That is, the end faces of the nine optical fibers 104 face the end faces of the nine optical fibers 106, respectively. As a result, nine combinations in which the end faces face each other with the film 26 interposed therebetween can be obtained.

The nine optical fibers 104 held by the block 100 are bundled and guided to the vicinity of the lamp 54 of the light source 52. Therefore, light enters the nine optical fibers 104 from the lamp 54 and is guided to one surface (the surface on the block 100 side) of the film 26.

Light emitted from nine optical fibers 104 opposed to each other enters the nine optical fibers 106 held by the block 102 through the film 26. 9
The optical fibers 106 are guided from the block 102 to the optical sensors 108, respectively. The density signals output from the nine optical sensors 108 are separately input to a binarization unit 110, where they are binarized in synchronization with a sampling signal output from the encoder 48.

Each of the nine binarized signals is determined by the determination unit 112.
The determination result of the presence or absence of a frame is obtained based on the output of each optical sensor 108 here. This determination unit 112
Is also supplied with a signal from the sensor selection unit 114. The sensor selection unit 114 controls the optical fiber 106 whose end face is located within the traveling locus width of the frame corresponding to the film shooting method.
And the optical sensor 108 connected thereto. The determination unit 112 selects only the determination result of the sensor 108 selected by the sensor selection unit 114 from these nine determination results, and determines the presence or absence of a frame according to a shooting method such as simplex, duo, or duplex.

As shown in FIG. 6A, the end faces of the nine optical fibers 104 and 106 are on a straight line perpendicular to the running direction of the film 26, and are located at different positions in the width direction of the film 26. is there. In this embodiment, since the optical sensor 108 detects the amount of incident light on the optical fiber 106,
This is substantially the same as the optical sensor 108 located at a position where the end face of the optical fiber 106 faces the film 26. Therefore, FIG. 6 illustrates that the optical sensor 108 is located at the end face position of the optical fiber 106 on the film 26 side.

These nine optical sensors 108 are positioned in the film width direction so that a plurality of optical sensors 108 always pass through one frame even when the film photographing method is different. FIG. 6A shows the case of the simplex system, in which case the determination unit 112 determines whether the sensor selection unit 1
The frame is detected by the eight optical sensors 108 (A) based on the output of No. 14 and the blip 1 is detected by the other optical sensor 108B.
18 is detected.

Accordingly, the determination unit 112 determines the presence or absence of a frame using the binary signals output from the eight binary units 110. For example, if a majority or a certain percentage or more of the determination results is black, it is determined that a frame exists. The presence or absence of a frame may be determined using the logical product or logical sum of the determination results. In this case, it is also possible to search using the output of the optical sensor 108B that detects the blip 118.

FIG. 6B shows the case of the duplex system, in which the front and back of the document are simultaneously photographed on the upper and lower channels, and there is an optical sensor 108C which does not detect a frame between both channels. Therefore, in this case, the determination unit 11
2 detects the frame of each channel based on the output of the sensor selection unit 114, using the outputs of three optical sensors 108D and 108E passing within the width of the upper and lower channels except for the optical sensor 108C. .

FIG. 6C shows the case of the duo system.
The center optical sensor 108F does not detect a frame. For this reason, based on the output of the sensor selection unit 114, the determination unit 112 detects the frame of each channel by four optical sensors 108G and 108H included in the two groups divided into the upper and lower groups. The search unit 116 searches for a target frame by integrating the determination signals output from the determination unit 112.

In the present invention, before the frame search is started as described above, the position of the frame detection unit 98 and the film 26 are adjusted. This alignment is performed by the method described with reference to FIGS. That is, the microfilm 200, 210 or 220 for positioning is set in the search device and the film 200, 210 or 220 is run.

When the film 200 is used, the central three optical sensors among the nine optical sensors 108 are selected and used. When the film 210 is used, the central three optical sensors are used, but the interval between the outer optical sensors is made to match the width of the band of the mark 412 shown in FIG. Film 22
When 0 is used, only the central optical sensor can be used, or optical sensors on both sides can be used in combination.

As described above, the output level of the optical sensor 108 when the film 200, 210, or 220 is run is input to the displacement detecting unit 300 shown in FIG. In the position shift detecting unit 300, the film 20 to be used is
Using the output of the optical sensor 108 corresponding to 0, 210 or 220, the frame detection section 98 and the films 200 and 21 are used.
0, 220 is detected. The displacement may be displayed on the display 302, or the warning lamp 304 may be turned on when the displacement exceeds an allowable range.

In FIG. 5, reference numeral 306 denotes a moving means for moving the frame detecting section 98 in the film width direction to correct the relative positional deviation. The moving means 306 may be a manual type or an automatic type using a motor. In the case of manual operation, the film 200, 210, or 220 is run or stopped and the amount of misalignment is displayed on the display 30.
2 is displayed, and the moving means 306 is operated while confirming the positional deviation amount, so that the positional deviation amount displayed on the display 302 becomes zero. In the case of the automatic type, control may be performed so that the frame detection unit 98 is moved in a direction in which the positional deviation amount output from the positional deviation detection unit 300 is reduced.

As described above, by moving the frame detecting section 98, the frame detecting section 98 and the films 200 and 21 are moved.
After correcting the relative position deviation in the film width direction with respect to 0 or 220, the microfilm 26 that has photographed the frame is searched, whereby the optical sensor 108 is correctly positioned on the running trajectory of the frame, and the search accuracy is improved. Can be increased. It should be noted that the correction of the relative positional deviation is performed by moving the film 200, 210 or
It is also possible to change the position of a guide (not shown) for positioning in the width direction of 0.

In the embodiment described above, since light is guided to each optical fiber 104 by using the light source section 52 for photographing, there is an advantage that the light source can be simplified. However, the present invention may use another light source or use a plurality of light sources to guide light to each optical fiber 104.

In the present invention, the optical fiber 10
Since the optical fibers 104 and 106 are used, the end faces of the optical fibers 104 and 106 can be arranged close to each other in the width direction of the narrow film 26. However, the present invention also includes blocks 100 and 102 each holding one optical fiber. In this case, the output of the binarizing unit 110 is directly used as a determination signal indicating the presence or absence of a frame, so that the determination unit 112 is unnecessary.

In this embodiment, since a plurality of density sensors (optical sensors) are arranged on a straight line perpendicular to the film running direction, the presence or absence of a frame can be detected at the same timing in terms of time. Therefore, unlike the case where a plurality of density sensors (optical sensors) are arranged shifted in the running direction of the film, it is not necessary to correct the output timing of each density sensor (optical sensor), and the circuit configuration is simplified. .

[0050]

According to the first aspect of the present invention, as described above, a microfilm on which an alignment mark is imprinted is passed through a frame detecting section, and a film density is detected at a predetermined position in the film width direction. Since the relative displacement between the detection unit and the film in the film width direction is detected and corrected, search accuracy can be improved.

In this case, an alignment mark having a boundary at a predetermined position in the width direction and having one side black and the other side transparent is imprinted on the alignment film. The film density on both sides is detected by at least three pairs of optical fibers, and as a result, the position of the boundary can be detected and the relative displacement can be corrected (claim 2).

A long band-shaped alignment mark having a predetermined width is printed at a predetermined position in the width direction of the film, and film densities on both edges of the mark are detected by at least two pairs of optical fibers. It is possible to correct the relative displacement so that the densities become equal (claim 3). In addition, a periodically changing curve such as a sine curve may be imprinted in the longitudinal direction of the film, and a relative displacement may be detected and corrected based on a detection interval when the curve is detected at a predetermined position in the film width direction. (Claim 4).

According to the fifth aspect of the present invention, there is provided a microfilm for positioning a frame detecting portion which is directly used for carrying out the method of the second aspect. According to the invention of claim 6, claim 3
A microfilm for positioning a frame detection portion which is directly used for carrying out the above method is obtained. According to the seventh aspect of the present invention, there is provided a frame detecting portion positioning microfilm which is directly used for carrying out the method of the fourth aspect.

[Brief description of the drawings]

FIG. 1 is a diagram showing a use state of an embodiment of a microfilm search device to which the present invention is applied.

FIG. 2 is a perspective view showing the inside of a scanner used here in a see-through manner;

FIG. 3 is a side view showing the arrangement of the main part.

FIG. 4 is a perspective view showing a line sensor driving unit.

FIG. 5 is a diagram showing a main part.

FIG. 6 is a diagram illustrating an arrangement of optical sensors.

FIG. 7 illustrates a method of the present invention.

FIG. 8 is a diagram illustrating another method of the present invention.

FIG. 9 illustrates another method of the present invention.

[Explanation of symbols]

 26 Microfilm 98 Frame detection unit 100, 102 Optical fiber holding block 104, 106 Optical fiber 108 Optical sensor 200, 211, 220 Alignment microfilm 204, 212, 224 Mark 206, 214, 226 Optical sensor (optical fiber end face) 300 Position shift detection unit 302 Indicator 304 Warning lamp 306 Moving means

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[Procedure amendment]

[Submission date] January 12, 1998

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] Fig. 8

[Correction method] Change

[Correction contents]

FIG. 8

Claims (7)

[Claims] 1. A pair of optical fiber holding blocks traversing the microfilm in the width direction and facing both sides of the microfilm, and a plurality of optical fiber holding blocks penetrating and holding the two blocks, respectively, and having one end faces opposed to each other across the microfilm. An optical fiber, a light source for guiding light to the optical fiber held in one block, and a frame detection unit having an optical sensor for detecting the amount of light incident on the optical fiber held in the other block, wherein the light A positioning method of a frame detection unit applied to a microfilm search device for determining the presence or absence of a frame based on a binarized signal obtained by binarizing an output of a sensor and performing a frame search. The microfilm on which the mark is imprinted passes through the frame detection unit, and the film density is detected by an optical fiber at a predetermined position in the film width direction. Film and the frame detector positioning method microfilm search device and detecting correct the film width direction of the relative displacement between the frame detector using. 2. An alignment mark is printed along a film length direction with one side being black and the other side being transparent at a predetermined position in the film width direction as a boundary, and the mark is positioned on the boundary and both sides thereof. 2. The microfilm search apparatus according to claim 1, wherein at least three film densities are detected by at least three pairs of optical fibers, and a position in the film width direction of the boundary is detected from the three film densities to correct the relative positional deviation. Frame detector alignment method. 3. An alignment mark is imprinted at a predetermined position in the film width direction at a predetermined width along a film length direction and a film density at both edges of the mark is detected by at least two pairs of optical fibers. 2. A method according to claim 1, wherein said relative positional deviation is corrected so that film densities detected at both edges of said mark become equal. 4. The alignment mark is imprinted as a curve that periodically changes in the film length direction around a predetermined position in the film width direction, and the alignment mark detected at the predetermined position in the film width direction. 2. The method according to claim 1, wherein the center of the mark in the film width direction is detected using a detection position interval in the film feed direction, and the relative positional deviation is corrected. 5. A positioning mark used in the method of claim 2, wherein a predetermined position in the width direction of the roll film is defined as a boundary, one side of which is solid black and the other side is transparent, along the film length direction. A microfilm for positioning a frame detecting portion, which is imprinted. 6. A method according to claim 3, wherein a band-shaped alignment mark having a predetermined width is printed at a predetermined position in the width direction of the roll film along the length direction of the film. A microfilm for positioning the frame detector. 7. A frame detecting unit used in the method according to claim 4, wherein a sine curve that periodically changes in a film length direction is printed around a predetermined position in a width direction of the roll film. Microfilm for positioning.