JP2885985B2 - Micro film reader - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION In the present invention, a frame having a defective photographing is marked with a mark indicating that the frame is defective, and a normal frame corresponding to the frame is re-photographed in another area. The present invention relates to a microfilm reader used for searching for microfilm.

[0002]

2. Description of the Related Art A rotary camera is one type of a microfilm camera for photographing an original while continuously transporting the original. In this method, an original and a film are moved in opposite directions, and images are sequentially and continuously taken from one end of the original through a narrow slit.

Here, the original is fed at a high speed and continuously at a constant speed. However, the original may be irregularly fed due to a fold or a flaw of the original, or may be jammed in the transport path, causing a so-called jam. Also, double feed may occur in which two or more originals are fed while being overlapped. When a conveyance failure such as a jam or a double feed occurs in this manner, there is a problem that a document in this portion cannot be photographed correctly.

On the other hand, when such a photographing defect occurs,
In the unregistered area of the film,
Frame with the same code as the defective frame.
Ignore defective frames when searching or copying
A known control method is known (Japanese Unexamined Patent Publication No. Sho 62-1).
No. 4637).

In this method, the defective frame is re-photographed.
Information, such as the address, recorded in the memory inside the search device
Please note that the contents of this memory will be
Is recorded on a magnetic tape provided at the leading end of the film.
It is. In other words, the recording medium used here
Film (electrophotographic film, silver halide film, etc.)
A magnetic tape is connected to the end of the. like this
Search device used here to use a special recording medium
In addition to the optical photographing and reading device,
A device for reading and writing is required. Also equipment
It is in the main body of information such as addresses for re-shooting one o'clock Symbol
Recording memory is required and the equipment becomes complicated.
There was also a title.

Further, according to this conventional method, a searcher can search
Even if you look at the frame that was
Frame of a beautiful image re-captured
Print out defective frames even though they are separate
Or read and memorize
There were also problems.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and has been developed for ordinary use without connecting a magnetic tape or the like.
Use a microfilm that is
A shadow mark is displayed near the frame to predict this frame.
Microfill re-photographed in the predetermined re-photographing area determined
When searching for a system, improve search efficiency and
Frame can be read easily, and the configuration is
Less complex, especially for searchers
Immediately determine the presence or absence of a frame that has been
It is an object of the present invention to provide a microfilm reader capable of obtaining a mask image .

[0008]

According to the present invention, this object is achieved in the vicinity of each frame.
With country search mark is imprinted, shooting to identify the successfully captured frames in the vicinity of the shooting defective frame
The shadow defect display mark is visibly imprinted, and the defective frame is used to read a microfilm re-photographed in another preset re-photographing area in the same film.
A microfilm reader that, mark the search
And mark reading means for reading a shooting failure display mark;
Search for the target frame based on the search mark and
That this shooting bad Display mark the target frame is attached
The goal call this mark reading means has been imprinted before Symbol recaptured region skip frame this mark was attached was <br/> detects
Control means for performing a search for masks .

[0009] Here, the frames to be re-photographed include a film which is continuously photographed next to the frame with a poor photographing or a film which is collectively photographed in a predetermined area. Data indicating correspondence, ie re-shooting
It is desirable to include the address of the frame that has been set in the mark. It is also desirable to be able to change the search mode depending on the type of film in which the position of the re-photographed frame is different.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a rotary camera for producing a microfilm used in the present invention will be described. FIG. 1 is a conceptual view of one embodiment of the camera, FIG. 2 is a perspective view showing an actual optical system, FIG. 3 is a side view showing a document conveying means, and FIG. 4 is a view showing an example of imprinting a mark on a film. is there.

[0011] First, the outline of the document feeder will be described with reference to FIGS. In FIG. 3, reference numeral 10 denotes an auto feeder,
An original 14 such as a bill is inserted into the insertion slot 12 in a superimposed manner, and a forward rotation roller 16 contacts the upper surface of the uppermost original 14, and a reverse rotation roller 18 opposed thereto faces the original 14.
Contacts the lower surface of Then, the stacked originals 14 are sent to the photographing unit one by one in order from the top. Reference numeral 20 denotes a transport belt wound around an appropriate number of rollers. A roller unit 22 is pressed against the upper surface of the belt 20, and a document 14 sent from the auto feeder 10 is fed between the two.
Is sent sandwiched between.

The document 14 is now turned upward,
The paper is raised between the photographing glasses 24 by an appropriate transport roller. Then, the document 14 is sandwiched between the discharge roller 26 and the belt 28 pressed by the discharge roller 26 and discharged to the stacker 30. Originals 14 are stacked in this stacker 3 in the order in which they were photographed.
Accumulate at 0.

[0013] Here While document 14 is captured during the passage between shooting glass 24, 24, the front end of the document 14 and the rear end entering here is detected by the document detecting sensor 32. That is, a light emitting element 33 such as an LED
Are arranged so as to face the sensor 32, and the sensor 32 detects passage of the document 14 by intermittently transmitting the light to the document 14.

When the document 14 passes through the photographing glasses 24, 24, both sides thereof are simultaneously photographed on a film 34 described later.
That is, as shown in FIG. 2, the original 14 has a plurality of exposure lamps 36 arranged outside the two photographing glasses 24, 24,
Illuminated by 36, the images on the front and back sides of the original 14 are guided to the photographing lens 46 by mirrors 38a, b, 40, 42, and 44, respectively, and are formed on the film 34 located below the lens 46. Here, the front and back images formed on the film 34 are linear images long in the direction orthogonal to the feeding direction of the document 14 by the slits 48. Reference numeral 50 denotes a shutter located above the photographing lens 46, which interrupts the passage of photographing light.

[0015] Next will be described with reference to Figure 1 the feed path of the film 34 traveling at a constant speed below the lens 46. In this drawing, reference numeral 52 denotes a spool on the supply side of the film 34. The film 34 supplied from the spool 52 is taken up on a take-up spool 60 via a guide roller 54, a photographing roller 56, a guide roller 58, and the like.

[0016] The shooting roller 56 here is the guide rollers 5
4 and 58, the film 34 runs in close contact with the upper half circumferential surface of the photographing roller 56. The photographing lens 46 is positioned above the photographing roller 56 and transfers the reduced projection image to the film 34 on the photographing roller 56.
Image. The guide roller 58 is rotated by a motor at a constant speed corresponding to the ratio of the document conveying speed to the photographing reduction ratio, and determines the feed speed of the film 34.

Reference numeral 62 denotes a line L as mark writing means.
It is an ED in which minute light emitting diodes are arranged in a line. The line LED 62 is located on the side of the photographing roller 56, and a one-dimensional image is formed in the width direction of the film 34 in a range where the film 34 is in close contact with the photographing roller 54, that is, in a range of the upper half circumferential surface of the photographing roller 54. Is imaged.

[0018] Each LED constituting each pixel of the line LED62 selectively be flashing by the control means 64 in synchronism with the feeding speed of the film 34 (FIG. 1), a film 34
The predetermined data is imprinted on the top. This control means 64
A PU 66, a ROM 68, a RAM 70, an input interface (IF) 72, an output interface 74, and the like are provided.

The feeding speed of the film 34 is detected by an encoder 76 attached to the guide rollers 58,
The output is sent to the CPU 6 via the input interface 72.
6 and stored in the RAM 70 as necessary. The data to be printed on the film 34 is input from a keyboard 78, a jam detecting unit 66A, a double feed detecting unit 66B, and the like, which will be described later.

The CPU 66 outputs a signal for selectively causing each pixel of the line LED 62 to emit light according to a predetermined operation program stored in the ROM 68.
Output via. Based on this output, the drive circuit 80 selectively causes each pixel to emit light, and prints predetermined data at a predetermined position on the film 34. The data to be imprinted are a blip b for identifying each frame and a mark M for identifying a frame whose photographing has become defective due to a jam or a double feed. In addition to these, the date, the type of document, and the like may be imprinted.

[0021] Next, the imprint of the mark M will be described. When the document 14 is jammed in the conveyance path, the output of the document sensor 32 does not change. The CPU 66 of FIG. 1 has a function of a jam detecting means 66A, and the means 66A monitors the change time of the output signal of the sensor 32. If the change time interval becomes longer than a certain value, it is determined that the document 14 is jammed, that is, a jam has occurred. to decide. The CPU 66 also has a function of a double feed detecting unit 66B for detecting double feeding of the document 14. This double feed is, for example, the incident light amount of the original sensor 32,
That is, it can be detected from a change in the amount of transmitted light of the document 14. That is, the amount of transmitted light is reduced at the time of double feeding.

The control means 64, when the jam detecting means 66A and the double feed detection unit 66B detects a feeding jam or heavy, imprinted mark indicating a photographing failure _M a _(M 1 ~M ₄₎ on the film 34. FIG. 4 shows a film 34A obtained by developing the film 34 at the end of photography.

As shown in this mark M, for example, FIG (A), can be a mark M ₁ obtained by successive blips b shooting bad frames. Or may be a 4 mark M ₃ shooting failure as shown in (B) was subjected to the mark M ₂ and the rear end as those in first position that occurred. These marks M
_{2, M 3} is obtained by a wide band across the film 34A. Further it may be a mark M ₄ of × indicia subjected by thick lines shooting defective frames as shown in FIG. 4 (C).

It is desirable that these marks M _{1 to} M ₄ have a shape that can be easily detected by a sensor or visually confirmed by a searcher during a search by a reader. Also, it is desirable that the film 34A be attached to the entire range or the front end and the rear end of the defective frame so that it can be easily identified when the film 34A is sent in the reverse direction and searched.

Next mark M shooting failure shown in FIG. 4
A microfilm reader for searching the attached film 34A will be described with reference to FIGS. FIG. 5 is a conceptual diagram of one embodiment of the present invention, and FIG. 6 is a functional block diagram of a main part thereof. In FIG. 5, the microfilm 34 at the end of photography is shown.
A runs while being wound from one of the two reels 102 and 104 to the other.

[0026] This is the film 34A light of the light source 106 is guided from below, transmitted light projection lens 108 of the film 34A, the image rotating prism 110, a reflection mirror 11
The light is guided to the screen 118 via the rear surface through 2, 114 and 116. On the back of the screen 118, a vertically movable plate 1
20 is provided so as to be movable in the horizontal direction.
0: a reflection mirror (not shown) and a CCD line sensor 12
2 are mounted vertically. Accordingly, the projected image on the screen 118 can be read by moving the movable plate 30 in the horizontal direction while reading the image incident on the line sensor 122.

The apparatus of this embodiment has two data transfer buses 124 and 126, one bus 124 CPU
And the other bus 126 is for image data. C
CPU (processing device chip) 12 is connected to PU bus 124.
8, a ROM 130 and a RAM 132 are connected. The image data read by the line sensor 122 is digitized and then input to a scanner input interface (I
F) and is sent to each unit via the image data bus 126.

Reference numeral 136 denotes an image data memory (hereinafter referred to as IM)
EM), and a semiconductor memory capable of high-speed writing and reading is used. The I-MEM 136 is connected to the bus 126 and repeats the operation of processing one of the two image data storage units and transferring the processed image data to the other data storage unit.

A compression / decompression processing unit 138 is connected to both buses 124 and 126. This compression / decompression processing unit 138 performs compression processing when transferring the read image data to an external device such as a facsimile or another microfilm reader, and is transferred as compressed data from the external device. Processing such as decompressing and restoring data is performed.

Reference numeral 140 denotes an image processing unit as image processing means, which is connected to both buses 124 and 126. The processing unit 140 performs various spatial filtering processes such as edge enhancement, thinning process, dither process, and the like based on the read raw data, and processes such as image enlargement / reduction.

Reference numeral 142 denotes a masking processing unit that performs a masking process on a masking area input from a keyboard 160, a touch panel provided on the CRT 156, or the like. Reference numeral 144 denotes a black frame erasure processing unit which performs a process of changing the black frame area input from the keyboard 160 or the touch panel to white when the film 34A is of a negative type.

[0032] 146 data transfer for the image (I-DM
A; Image Direct Memory Acc
ess) a control unit for controlling data transfer directly between various input / output interfaces and memories, or between memories. That is, in this embodiment, the image data is transferred by the CPU 128.
And a DMA method that is performed without going through
After setting predetermined parameters such as the transfer start memory address and the number of transfers to the I-DMA control unit 146, there is no need to perform any processing until the transfer is completed.

Reference numeral 148 denotes a disk input / output interface, which is interposed between the external memory device 150 such as an optical disk and the bus 126. Reference numeral 152 denotes a printer output interface, which is interposed between the printer 154 and the bus 126.

Reference numeral 156 denotes a CRT (Cathode-ray)
tube: cathode ray tube) and interface 1
It is connected to the bus 126 via 58. This CRT
A transparent touch panel is mounted on the display screen 156 in an overlapping manner. This touch panel is used to input a masking area, a black frame area, and the like. 160 is a keyboard, and 162 is an interface.

Reference numeral 164 denotes a light receiving element, which is a film 34A
Are opposed to the light emitting element 166 with the. This light receiving element 16
Reference numeral 4 denotes a mark M or a search mark on the film 34A shown in FIG.
It detects a blip b as a peak , and is formed of a photodiode, a photodiode array in which a large number of photodiodes are arranged in the width direction of the film 34A, or the like.

The CPU 128 performs a predetermined operation according to a program stored in the ROM 130, and the operation includes the functions shown in FIG. First, the mark discriminating means 170 discriminates the mark M and the blip b based on the output of the light receiving element 164 and the signal indicating the film feed amount output from the encoder 172. For example Figure 4 mark M ₁ of (A) is identified by its length as blip b. FIG. 4
(B), it can be detected by using a light receiving element 164 made of a photodiode array for the mark _M 2 ~M ₄ of (C). In this embodiment, the light receiving element 164 and the mark discriminating means 170 form a mark reading means.

Reference numeral 174 denotes an address detection unit, 176 denotes a film feed control unit, and 178 denotes a mode discrimination unit. These form the control unit 180 of the present invention. Search
When the mark M is detected for the target frame, the frame is defective in photographing, so the film feed control means 176 of the CPU 128 skips this frame and searches for a frame that has been correctly photographed. The frame that has been re-photographed may be next to the frame with the poor photographing, as shown in FIG. 4A, or may be stored together at the end of the film, as shown in FIG. 4B. Therefore, it is necessary to change the search mode according to the type of the film 34A.

[0038] For example, the following in the correct frame of the photographing failure frame is for the film 34A of FIG. 4 which is recaptured (A), looking for re-captured frames of neighboring and detecting a mark M (mode 1). FIG. 4 (B) in which re-shot frames are collectively stored in a predetermined area such as the end of the film 34A.
For the film 34A, the upper blip mark b ₀ (see FIG. 4B) indicating the frame that was re-photographed is detected,
A mark M indicating the correspondence with the re-photographed frame (for example, FIG.
Detecting the M ₅₎ consisting of bar code (B) and searching for its corresponding frame (mode 2).

The address detecting means 174 detects an address of a frame which has been re-photographed in accordance with the search mode. That is, the address of the frame of the next when the mode 1, when the mode 2 for detecting a re-captured frames using the up blip marks b ₀ and the mark M.

The mode discriminating means 178 discriminates the search mode. If the mode is written at the head of the film 34A, the mode can be discriminated by the output of the light receiving element 164. A mode identification mark m such as a magnetic tape or a bar code is provided on the cartridge 34B of the film 34A.
(See FIG. 5).
When A is loaded, the identification mark m may be read by the reader 34C. Manual selection switch 18
2 may be selectable.

[0041]

[Operation] Next, a typical operation will be described with reference to the operation flowcharts shown in FIGS. FIG. 7 shows an embodiment having no mode selection function. When starting, the number n indicating the search order is initialized to 1 (step S1), and the first frame is deleted.
A search is performed using the lip b (step S2). The address of the frame to be searched, that is, the target frame is
Output from

Next it is determined in the mark judging means 170 whether or not marked M to the target frames calculated by the search (step S3). If there is no mark M, the frame is printed out (step S4), and if there is a frame to be searched next, that is, the next target frame (step S5),
Rewrite n to n + 1 and search for the next frame (step S6).

If the target frame has the mark M, the address (AD) and the mark of the frame that has been re-photographed corresponding to the mark M are obtained (step S7), and the frame of this address (AD) and the frame with the mark are searched. (Step S8). here,
An address (AD), by predetermined steps, may be as an address, for example next to the frame, detects the recaptured <br/> the frame by reading a mark M or using the up blip marks b ₀ Is also good. Alternatively, the address (AD) may be manually input from the keyboard 158 (FIG. 5).

FIG . 8 is an operation flowchart of the embodiment in which the search mode can be selected. In this embodiment, first, the film 34 is used.
When A is loaded, the search mode of the film 34A is determined by the mode determination means (step S10). Then, if there is no mark M, print output is sequentially performed by the same operation as in steps S1 to S6 in FIG.

When there is a mark M, another operation is performed according to the mode which has already been detected. That is, if the mode is 1 (step S11), the next re-captured frame is searched (step S12) and printed out (step S4). In mode 2, the address (AD) of the frame that was shot again is found and
The photographed frame is obtained (step S13), and the frame of this address (AD) is searched (step S14) and printed out (step S4).

In the above-described embodiment, the image is attached to a frame having a defective photographing.
Mark (improper shooting indication mark) is visible to searchers
Because of that, the searcher has a beautiful image re-captured during the search
It can be immediately determined whether or not another frame exists. Therefore
Despite having beautifully re-shot frames,
Printout of good frames is eliminated. Ma
In the above-described embodiment, the search result is described as being printed out. However, the search result is stored in an external memory device 150 such as an optical disk, displayed on a CRT 156, or remotely processed via a communication line. You may make it transfer to an apparatus.

[0047]

[Effect of the Invention] The invention of claim 1, as described above, the target co
Has been detected as having a bad shooting indication mark
In some cases, this frame is skipped and a frame that has been correctly re-photographed is searched, so that a frame with a defective image is not output, and a correct image can be searched easily and efficiently. In particular, the shooting defect display mark
The searcher is directly screened
Immediately after taking a look at a display device such as a
Therefore, it can be determined that there is another frame that has been re-photographed.
For this reason, there is a frame of a beautiful image re-shot
Failure to print out frames with poor shooting
It can be prevented beforehand.

[0048] may be allowed included the address of the re-captured frames to display failure mark shooting here (claim 2).
In addition, since various films can be formed depending on the position where the re-photographed frame is imprinted, it is desirable that a plurality of search modes can be selected corresponding to these films (claim 3). For example, there may be a mode for a film that has been correctly re-photographed next to a frame having a poor image or a mode for a film that has been re-photographed in a certain area. The mode identification mark indicating this mode may be imprinted on the film itself (Claim 5) or may be recorded on a cartridge containing the film (Claim 6).

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a rotary camera.

FIG. 2 is a perspective view showing an actual optical system.

FIG. 3 is a side view of the document conveying means.

FIG. 4 is a diagram showing an example of imprinting a mark on a film.

FIG. 5 is a conceptual diagram of one embodiment of the present invention.

FIG. 6 is a functional block diagram of the main part.

FIG. 7 is an operation flowchart.

FIG. 8 is an operation flowchart.

[Explanation of symbols]

 34A Microfilm 34B Cassette 128 CPU 164 Light receiving element forming mark reading means 170 Mark discriminating means forming mark reading means 180 Control means M mark m Mode identification mark

Claims (6)

(57) [Claims] 1. A search mark is imprinted near each frame.
With the shooting display failure mark to identify the successfully captured frames in the vicinity of the shooting defective frame is visible
Is copy incorporated in, the photographing defective frames are in the same film
A microfilm reader that is used to read microfilm re-photographed in another preset re-photographing area.
There are a mark reading means for reading the search mark and shooting bad mark, on the basis of the search mark
The mark reader means detects that the imaging defects Display mark a target piece is attached with search target frame
Then skip the frame with this mark and re-take the picture
A control unit for searching for a target frame imprinted on the area . 2. The photographing defective display mark includes data indicating an address of a frame that has been re-photographed, and the mark reading is performed.
Means reads the data, the control means to the target frame
2. The microfilm reader according to claim 1, wherein when there is a photographing failure display mark, a frame re-photographed is read in accordance with the address . 3. The microfilm reader according to claim 1, wherein a plurality of search modes relating to a method of searching for a re-photographed frame can be selected. 4. A search mode, the first mode is read again captured frame target frame of the imaging defects adjacent thereto at the detect <br/>, it detects the target frame shooting failure At times, the mark of the corresponding re-shot frame is
4. The microfilm reader according to claim 3, further comprising: a second mode for detecting a dress and reading a target frame . 5. A motor that has been imprinted on microfilm
Microfilm reader according to claim 4 that determine the search mode to detect over de identification mark. 6. A search mode by detecting a mode identification mark recorded on a cartridge containing a microfilm .
Microfilm reader according to claim 4 that determine the over-de.