JPH0990504A - Information retrieval device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To move a film carrier in the width direction of film without worrying about backlash by providing a width direction driving device for film and a backlash quantity calculating means at a carrier and automatically calculating the backlash quantity and correcting the moving quantity. SOLUTION: In the case that a transmission type sensor 50 is shielded by a shielding plate 51, a motor 37 is rotated, and a microfilm carrier C is driven in a direction (d), so that the transmission type sensor 50 is moved to a position where it is not shielded by the shielding plate 51. Next, the motor 37 is inversely rotated, so that the microfilm carrier C is driven in the direction (c). Then, the backlash is caused at the film carrier C, so that the film carrier C is not moved even though the motor 37 is driven for a specified time. Then, the film carrier C starts moving, and the transmission type sensor 50 is changed from the turned-off state to the turned-on state. The time required from inversely rotating the motor 37 till making transmission type sensor 50 get in the turned-on state is calculated as the backlash quantity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention conveys a long information recording medium such as a roll microfilm carrier equipped in a microfilm reader or a reader printer, and records on the information recording medium. The present invention relates to an information retrieving apparatus having a means for retrieving a desired image information portion at a predetermined position and an information recording medium width direction moving means for moving an information recording medium in the width direction.

[0002]

2. Description of the Related Art A roll as an information retrieval device equipped in a microfilm reader, a reader printer or the like (hereinafter referred to as a device body such as a reader) is a roll as an installed long-sized information recording medium. Forward transport of microfilm between the take-up and rewind parts via the projection position (film illumination part)
Address information of a desired image frame portion (image information portion, micro image portion) to be searched, which is provided with a film conveying means for performing reverse conveyance, and which is input to the control portion in advance by the input means,
In the forward or reverse feeding process of the film, the mark detection means for detecting the search mark previously given corresponding to each image frame portion sequentially printed along the length of the film is inputted to the control unit. By the comparison calculation with the mark detection information, the film transport means is automatically driven and stopped so that the desired image frame portion is searched for at the projection position and is stopped (automatic search operation mode). It is also possible to have a dial for manually controlling the film transporting means, and by this dial operation, the film can be transported in the forward or reverse direction to locate the desired image frame portion at the projection position (manual search operation mode).

The image frame portion searched for at the projection position can be read by being enlarged and image-projected onto the reader screen surface by the projection optical system on the main body of the device such as a reader. In the case of a reader printer, if you want to obtain a magnified print of the image frame, press the print button to activate the print mechanism, and the image frame will be enlarged and projected onto the recording medium to execute printing. It

Roll microfilm has several standards (modes) for imprinting microimages.
12 (a), (b), and (c) of FIG.

(A) is a microfilm in which one micro image is imprinted in the width direction of the film F (a microfilm in which one channel is imprinted in the film width direction). This imprinted film is hereinafter referred to as "simplex film".

[0006] (b) is a microfilm in which two different micro images are imprinted in the width direction of the film F (a microfilm in which two channels are imprinted in the film width direction). This imprinted film is hereinafter referred to as "duo film".

(C) is a microfilm in which the front and back of the same image are imprinted in the width direction of the film F (a microfilm in which two channels are imprinted in the film width direction). This imprinted film is hereinafter referred to as "duplex film".

In each of the microfilms (a) to (c) described above, a is an image frame portion which is sequentially printed along the length of the film, and m is given corresponding to these image frame portions. It is a search mark. In the automatic search operation mode, the search mark m is automatically detected by the mark detecting means during the forward or reverse feeding of the film so that the desired image frame portion is searched for at the projection position and is stopped. Drive / stop control is performed.

Stop position setting in the film longitudinal direction (film feed direction) with respect to the projection position of the image frame portion
The adjustment can be performed by controlling the film transport means. That is, with respect to the film feeding direction, the stop position with respect to the projection position of the image frame portion can be set so as to be projected on the reader screen of the main body of the device such as a reader and stored in a preset print frame.

The channel used is switched to the projection position of a microfilm such as the duo film of (b) or the duplex film of (c) in which two channels are imprinted in the film width direction. Alternatively, the carrier upper unit including the film conveying means) is movable in the film width direction with respect to the supporting portion, and the film carrier is moved in the film width direction, that is, in the width direction of the film F as an information recording medium. Made in.

Conventionally, the device for moving the film carrier in the film width direction is constituted by a manual operation tool such as a knob or a lever and an interlocking mechanism for mechanically interlocking the manual operation tool and the film carrier. To switch the channel of film or duplex film, the user operates the manual operation tool to move the film carrier in the film width direction with respect to the main body of the reader while watching the microfilm image projected on the reader screen. , By changing the relative position of the film and the screen.

However, in the case of adopting the above-mentioned structure, when projecting a micro image having a channel different from that of the currently projected micro image on the screen, the film is operated by operating the manual operation tool one by one. It is necessary to move the carrier, and moreover, it is necessary to carefully operate the manual operation tool in order to perfectly display the necessary micro image on the screen according to the relative position of the film and the screen, and the micro image as a whole. It was impossible to efficiently perform the projection operation of.

Further, even when the search is performed under the control of an external device, if the channel is changed, the automatic execution is temporarily interrupted at that time, and the projection position must be adjusted by the manual operation. Had to operate both the external device and the film carrier as the information retrieval device, or required a plurality of operators.

To solve this problem, it is proposed to automatically move the film carrier in the film width direction at the time when the channel is found after searching for channel switching of duo film (Japanese Patent Publication No.
103376, Japanese Patent Publication No. 7-1366) has already been made.

[0015]

By the way, like the film carrier described above, a long image recording medium is conveyed and a desired image information portion recorded on the information recording medium is searched for at a predetermined position. In the information retrieving apparatus having the means for moving the information recording medium in the width direction and the means for moving the information recording medium in the width direction, the control accuracy is reduced due to the backlash generated when the information recording medium width direction moving means operates. There's a problem.

An object of the present invention is to eliminate the problem caused by this backlash.

[0017]

The present invention is an information retrieving apparatus having the following configuration.

(1) Means for transporting a long information recording medium to locate a desired image information portion recorded on the information recording medium at a predetermined position, and moving the information recording medium in the width direction. In an information retrieval device having a transportation means,
A reference sensor for controlling the movement of the information recording medium in the width direction is provided, and the number of pulses from the reference sensor or the amount of movement of the information recording medium in the width direction generated by the time is generated when the moving means operates. An information retrieval apparatus having means for automatically calculating and correcting the amount of backlash to be performed.

(2) Input means for inputting the amount of movement of the elongated information recording medium in the longitudinal direction, detection means for detecting the current position of the information recording medium in the longitudinal direction, and movement input by the input means. And a drive unit for moving the information recording medium in the width direction by comparing the amount of the information recording medium with the detection result of the detection unit to determine whether the information recording medium has moved by the movement amount input by the input unit. And an information recording medium width direction moving device that moves the projection position so that the image information of the information recording medium is projected at a predetermined position by controlling the drive device. A reference sensor for controlling movement of the medium in the width direction is provided, and the amount of movement of the information recording medium in the width direction of the information recording medium, which moves with the number of pulses from the reference sensor or time, is generated when the moving means operates. Information retrieval apparatus characterized by comprising means for calculating and correcting the backlash amount automatically.

(3) In the information retrieving apparatus described in (1) or (2), input means for inputting the image information position in the width direction of the information recording medium at a distance from the reference position, and input from the input means. An information retrieving apparatus, comprising: a moving unit that moves the moved amount, and a moving amount that is corrected by the backlash amount when the moving amount is input from the input unit.

(4) In the information retrieving apparatus according to any one of (1) to (3), the drive speed for backlash drive is more than the drive speed for moving the information recording medium in the width direction. An information retrieving apparatus having an information recording medium width direction moving means for driving the device at high speed.

(5) In the information retrieving apparatus according to any one of (1) to (4), the image position of the information recording medium in which the image information of two channels is printed in the width direction is set for each channel. The input means for inputting the distance from the reference position, the input means for inputting the image position of the information recording medium on which the image information of one channel is printed in the width direction by the distance from the reference position, and the width When the information recording medium is changed from an information recording medium having two channels imprinted in the width direction to an information recording medium having one channel imprinted in the width direction, one channel is imprinted in the width direction. Automatically moved to the image position of the information recording medium, or from the information recording medium having one channel imprinted in the width direction to the information recording medium having two channels imprinted in the width direction,
When the information recording medium is changed, the information retrieving apparatus is provided with a moving means for automatically moving to an image position of either channel of the information recording medium in which two channels are imprinted in the width direction.

(6) In the information retrieving apparatus according to any one of (1) to (5), a rotating unit that rotates a projected image of an information recording medium and a rotating unit that detects a rotation angle of the rotating unit. Information retrieval characterized by having an angle detection means, a means for detecting the image projection magnification of the information recording medium, and a correction means for correcting the amount of movement of the information recording medium in the width direction from the rotation angle and the image projection magnification. apparatus.

(7) In the information retrieving apparatus according to any one of (1) to (6), the communication means for communicating with an external device and the information from the external device may be used to start or prior to the search. An information retrieval device which moves the information recording medium to a predetermined movement position in the width direction.

(8) In the information retrieving apparatus according to any one of (1) to (7), the information recording medium is a roll microfilm and the apparatus is a microfilm carrier. Search device.

<Operation> a) In the information retrieval apparatus of the present invention, in the case of a microfilm carrier, means for moving the carrier in the width direction of the microfilm as an information recording medium, that is, means for moving the film in the width direction. When the film is replaced and the film other than duo film is projected, the projection position may be different from the previous time, so it automatically moves to the movement position other than duo film when it is determined to be other than duo film It is something that is done.

Further, an external device is connected to the information retrieval device,
Even when performing a search under the control of the external device,
When the microfilm search information is stored in the database of the external device, the microfilm search information is moved when the movement position is known, and the search is automated.

As for the movement position of these carrier driving devices, a reference sensor is arranged at a certain position in the width direction of the film, and an absolute movement method is used in which the reference sensor is used as a reference to move a predetermined amount of movement. It is possible to realize it with a simple structure of a reference sensor and a means for moving to, and the movement amount depends on the shooting model, shooting mode, shooting reduction ratio, etc. Since the positions are different, the amount of movement from the reference sensor can be input and stored by the input means.

B) When the microfilm carrier is moved in the width direction, backlash occurs in the moving means, which becomes a hindrance factor in automatically moving the microfilm carrier to an accurate position. Further, when inputting the movement amount in the width direction from the input means, the backlash amount must be taken into consideration, which impairs the accuracy of the input movement amount. further,
Since the backlash amount varies depending on the machine, it is necessary to consider the backlash amount which differs for each machine. In other words, since the projection magnification of the micro image on the screen is large, the movement amount of the micro film carrier and the movement amount of the projected image are greatly different from each other even with a slight backlash amount. In addition, when adjusting the fine adjustment position of the projected image, the microfilm carrier must be driven at a very slow speed in the film width direction, and if there is backlash at this time, the position of the projected image does not change significantly. There is a long time.

A mechanical method can be used to reduce the amount of backlash, but this leads to an increase in cost, so that it is necessary to improve the operation accuracy even if there is backlash.

In the present invention, a film width direction driving device is used as a carrier as the information recording medium width direction moving means,
A backlash amount calculating means is provided to automatically calculate the backlash amount and correct the movement amount. Thus, each machine can have its own backlash amount, and the film carrier can be moved in the film width direction without worrying about backlash.

Also, when the movement amount in the film width direction is input from the input means, when the movement amount is input, the film carrier is moved by the input movement amount while correcting the backlash amount. Therefore, it is not necessary to consider the backlash amount, the movement amount can be accurately input, and the input movement amount can be accurately reproduced and moved.

Further, by driving the backlash drive drive at a higher speed than the drive speed for moving the film carrier in the film width direction, the projection image can be adjusted even when the fine adjustment position of the projection image is adjusted. The time when the position does not change can be greatly shortened.

In the present invention having the above-described structure, the film carrier can be moved in the width direction of the microfilm by driving the carrier driving device without paying attention to the amount of backlash existing in the carrier. There is. Further, when inputting the amount of movement of the film carrier in the width direction, it is not necessary to consider the amount of backlash by correcting and moving the amount of backlash, and the amount of movement is accurately input. It is possible to move accurately by reproducing the input movement amount.

That is, when the micro image currently being projected is searched for another micro image and it is determined that the image positions are different, the carrier driving device is driven to automatically move the carrier in the width direction of the film. It is possible to project a desired micro-image onto a predetermined position of the screen without worrying about the amount of backlash existing in the carrier when moving it to.

C) Further, a projection magnification detecting means is provided to correct the amount of movement by the projection magnification, and also when the image is rotated by the image rotating means, a rotation angle detecting means is provided to make correction according to the rotation angle. By providing the means, the shift amount of the movement amount can be corrected.

That is, according to the present invention having the above-described structure, the carrier driving device is driven at the time when it is determined that the mylok image currently being projected is changed to another micro image and the image position is different. By automatically moving the carrier in the width direction of the film, a desired micro image can be projected onto a predetermined portion of the screen without trouble. Further, as a means for detecting the moving position of the drive device for moving the carrier,
Since it can be realized with only one reference sensor, the structure is simple and inexpensive.

Further, the deviation amount of the carrier movement amount can be corrected by detecting the projection magnification and the rotation angle.

[0039]

BEST MODE FOR CARRYING OUT THE INVENTION

<Embodiment 1> (FIGS. 1 to 7) (1) Micro Film Reader Printer FIG. 1 is a front view of a micro film reader printer equipped with a film carrier as an information retrieval apparatus according to the present invention. RP is a reader printer, C is a film carrier attached to the reader printer, 30 is a leader screen, 16 is a projection lens, and 23 is a keyboard as an input means.

FIG. 2 is a perspective view of an optical system in the reader printer. As will be described later, a desired image frame portion of the roll microfilm F is searched for on the projection glass portion A which is the projection position by the image frame automatic search operation of the film carrier C. The image frame portion is illuminated from the lower surface side by the illumination means including the light source lamp 14, the spherical mirror 14a, the condenser lens 15 and the like arranged on the reader printer main body side below the projection glass portion A, and the illumination light Light transmitted through the film is projected and magnified and projected at a predetermined magnification on the back surface of the reader screen (light diffusing plate) 30 by the reader optical system including the projection lens 16 and the fixed first to fourth mirrors 41 to 44. The micro image can be read as a magnified image from the front side of the (reader mode).

Reference numeral 45 is a scanner having a scanning first mirror 46 and a second mirror 47, and 48 is a printing mechanism section. The scanner 45 is controlled to move forward / backward at right angles to the optical path between the fixed second mirror 42 and the fixed third mirror 43 of the reader optical system, and the scanning first mirror 46 moves from the optical path in the reader mode. It is held in the retracted position. When it is desired to obtain a print of the micro image enlarged and projected on the screen 30, the print button is pressed to activate the print mechanism unit 48, and the scanner 45 is moved in the direction of entering the optical path to perform scanning. The image light on the optical path is scanned by the 1-mirror 46. The scanning light is magnified and image-projected onto the surface of the recording medium D via the second scanning mirror 47 and the exposure control shutter 49 to execute printing (print mode).

Although the details of the print mechanism section 48 are omitted,
For example, it is a transfer type electrophotographic copying mechanism using a rotary drum type electrophotographic photosensitive member D as a recording medium. The image light scanning movement speed of the scanner 45 is 1 / the peripheral speed of the photoconductor D.
2.

(2) Film Carrier C FIG. 3 is an external perspective view of the film carrier C. The film carrier C in this example is a unit device that can be attached to and detached from the reader printer RP, and includes a carrier lower unit 32 and a carrier upper unit 32a.
The carrier lower unit 32 is fixedly mounted on the reader printer RP.

The carrier upper unit 32a is a movable unit which is slid in the film width direction c / d with respect to the carrier lower unit 32 by a moving mechanism described later.

FIG. 4 is a perspective view of the internal mechanism of the carrier upper unit 32a. 32b is the carrier upper unit 3
2a is a bottom plate. Reference numeral 1 is a film supply cartridge in which a long microfilm F as an information recording medium is housed in a roll. In the case of this example, the film cartridge 1 is a front door 32c of the carrier upper unit 32a.
(FIG. 3) is opened and set in the film mounting portion of the carrier upper unit 32a.

Reference numeral 2 is a capstan roller for driving the microfilm F in the cut ridge 1. M1 is an extraction motor for driving the capstan roller 2, S
Reference numeral 1 is a solenoid for bringing the capstan roller 2 into contact with the microfilm F via the support arm 3, and 4 is a spring for moving the support arm 3, the plunger 3a, and the capstan roller 2 to separate the capstan roller 2 from the microfilm F. is there.

M2 is a film rewinding motor for rotating the film spool in the cartridge 1.
S2 is a brake solenoid for the film rewinding motor M2. When the brake solenoid S2 does not operate, the motor M2 is rotatable, and when the brake solenoid S2 operates (turns on), a control plate 5 fixed to the motor shaft is provided.
To prevent the rotation of the motor M2.

Reference numerals 6 and 7 are film guide rollers. 8
Is a take-up reel, and in the case of this example, the front door 32d (FIG. 3) of the carrier upper unit 32a is opened and detachably set in the mounting portion of the carrier upper unit 32a. M3
Is a film winding motor for rotating the winding reel 8, S3 is a brake solenoid for the motor M3, and 9 is a braking plate.

Although not shown, the cartridge 1
A guide plate for guiding the film is provided along the film feeding path between the take-up reel 8 and the take-up reel 8.

Reference numerals 17a and 17b are mark detection means for detecting the search (measurement) mark m provided on the side of each image frame portion of the microfilm F. In the case of this example, they are projection positions. The projection glass portion A is disposed on both sides of the film feeding path, and 17a is an A channel side mark and 17b is a B channel side mark detecting means.

The mark detecting means 17a and 17b have a built-in photoelectric conversion element, and the light from the lamp 14 is interrupted by the mark m while the microfilm F is being transported in the forward or reverse direction as will be described later. Is detected and a mark detection signal is output to the processing means 20 (FIG. 6) of the control system described later.

Reference numeral 28 is a photo encoder for detecting the transport speed of the film.

(3) Film Carrier Moving Mechanism In FIG. 4, B is a film carrier moving mechanism (information recording medium width direction moving device, shift mechanism). FIG. 5 is an enlarged plan view of the film carrier moving mechanism B portion.

31a and 31b are carrier upper unit 3
Two elongated holes 33a and 33b formed in the bottom plate 32b of 2a and having the longitudinal direction in the film width direction c and d, respectively.
1a and 31b, which are guide pins that are fixed by being screwed into the carrier lower unit 32, and the bottom plate 32b of the carrier upper unit 32a is guided by the elongated holes 31a and 31b and the guide pins 33a and 33b.
It is free to slide in the film width direction within the length range of 31b.

Reference numeral 35 is another long hole formed between the two long holes 31a and 31b of the bottom plate 32b of the carrier upper unit 32a and having the longitudinal direction in the film width direction.
The rack 34 fixedly provided on the lower carrier unit 32 side is exposed from the long hole 35.

Reference numeral 37 denotes a motor mounted on the bottom plate 32b of the carrier upper unit 32a, and 36 denotes a pinion gear fixed to the shaft of the motor 37, which is engaged with the rack 34.

When the motor 37 is driven in the forward and reverse directions, the pinion gear 37 rolls on the rack 34, and the bottom plate 32b of the carrier upper unit 32a moves to the carrier lower unit 32.
The top is moved in the width direction of the microfilm F by cd.
That is, the carrier upper unit 32a is relatively moved in the film width direction c / d with respect to the apparatus body such as the reader.

The movable carrier upper unit 32a
Reference position detecting means 38 is attached as a detecting means for detecting the absolute position between the carrier lower unit 32 on the fixed side and the carrier lower unit 32.
It is configured to be output to 0 and to detect the moving distance of the carrier upper unit 32a from the reference position.

In this example, the reference position detection means 38 is a transmission type sensor 50 in which the carrier upper unit 32a on the movable side is also provided on the bottom plate 32b, and the transmission type sensor 50 on the carrier lower unit 32 side which is the fixed side. Consists of a light shielding plate 51 for the sensor 50, and the carrier upper unit 32a
Sensor 50 by moving the film width direction cd
And the relative movement of the light shielding plate 51 turn on / off the transmissive sensor 50.
Carrier upper unit 32a which is turned off and is movable
(4) Control system FIG. 6 is a block diagram showing the main control circuit configuration of the film carrier. Reference numeral 20 denotes a processing unit such as a microprocessor that collectively processes the mark information of the microfilm F detected by the mark detection unit 17, and the processing unit 20 includes a transfer unit 21, a storage unit 22 as a storage unit that stores the mark information, and an operation. It is composed of a unit 24 and a control unit 25.

The transfer unit 21 transfers the mark information detected by the mark detection means 17 to the storage unit 22, and the storage unit 2
Reference numeral 2 stores the number (address) of the designated image frame input from the input means 23 such as a keyboard, and the mark information transferred from the transfer unit 21.

The control unit 25 performs comprehensive control (for example, troubleshooting) in the processing means 20, and
The control unit 25 also serves as a motor drive control unit for transporting the microfilm F. Further, it also serves as a reference position detecting means for moving the film carrier C in the width direction of the microfilm F according to the processing result of the mark information and a motor drive control means.

The calculation unit 24 compares and calculates the image frame number input from the input unit 23 and the mark information stored in the storage unit 22, and outputs the result to the control unit 25.
Reference numeral 27 is a display for displaying the address of the image frame.

(5) Operation of the film feeding section The cartridge 1 is attached to the upper unit 3 of the film carrier C.
When mounted on the mounting portion of 2a and the operator inputs a desired image frame number to the input means 23, the motor M1 is driven via the motor control circuit 26 (FIG. 6) and the solenoid S is operated.
1 is activated. As a result, the capstan roller 2 comes into contact with the lead tape portion of the microfilm F coming out of the cartridge 1 and the microfilm F is pulled out from the cartridge 1, and the leading end of the lead tape portion is film guide roller 6 → projection glass portion A → Film guide roller 7
→ The film is fed through the film feeding path to the take-up reel 8. When the leading end of the lead tape portion approaches the take-up reel 8, the take-up motor M3 is driven, and the lead tape portion is wound around the take-up reel 8 (auto loading).

Next, the motor M1 and the solenoid S1 are deactivated, but the microfilm F is wound on the take-up reel 8
With the rotation, the sheet is continuously conveyed from the cartridge 1 side to the take-up reel 8 side.

While the microfilm F is being fed, the mark m detected by the mark detecting means 17 is compared with the frame number input in advance after a predetermined time by the arithmetic section 24. If they match, a stop signal is issued from the control section 25. When the brake solenoid S3 is transmitted, the brake solenoid S3 operates to control the winding shaft of the winding reel 8, and similarly, the brake solenoid S2 also controls the shaft of the motor M2 to stop the coasting rotation of the feed spool in the cartridge 1. , The feeding of the microfilm F is stopped, the desired image frame portion of the film F is searched by the projection glass portion A which is the projection position and stopped (automatic search operation), and the micro image of the image frame portion is projected. It is projected onto the screen 30 via the lens 16.

Further, in the process of controlling the reverse transport of the microfilm F from the take-up reel 8 side to the cartridge 1 side, the automatic search operation control of the desired image frame portion of the film F is performed.

(6) Film width direction movement control of film carrier C When the microfilm F used is a simplex type film as shown in FIG. 12A, the movement of the microfilm F in the longitudinal direction is the same as the order of photographing. Is done like. That is, since the microfilm F of the siren plex type has the mark m of each micro image only on one channel side, the number of the mark m of each micro image is counted using the signal from the mark detecting means 17a or 17b. I will go up. Here, FIG.
The difference from the duo-type microfilm F as shown in (b) is that even if the search is not completed, only one channel exists, so the channel can be identified.

Further, in a state where the film carrier C is installed in the reader printer RP, a micro image which is recording information on the micro film F illuminated by the light source lamp 14 is projected on the screen 30. However, if the previously projected micro image is a duo-type micro film F, the projected micro image may run off the screen 30 as shown in FIG. This is because when the duo-type microfilm F is projected onto the screen 30, the microimages of the two channels are projected on only a part of the screen 30 as shown in FIG. A micro image of either channel as shown in (b) or (c) is displayed on the screen 3
This is because the film carrier C is moved so as to project 0.

Therefore, the film carrier C (carrier upper unit 32a) is set by the film carrier moving mechanism B (FIGS. 4 and 5) so that the duo type micro film F and the non-duo type micro film F can be mixed. ) Can be moved in the width direction c · d of the microfilm F to change the relative position between the microfilm F and the screen 30.

As a result, even when the simplex type microfilm F is used after the duo type microfilm F is used, for example, FIG.
As shown in, the micro image can be projected on the screen 30 without any defects.

Specifically, in order to project the designated micro image on the screen 30, the motor 37 (FIG. 3) is used to move the film carrier C by a predetermined distance from the reference position detected by the reference position detecting means 38. 4 ・ Fig. 5)
Drive control is performed. As a result, the micro image on the screen 30 is projected, for example, as shown in FIG.

To further explain this control, the processing means 20 (FIG. 6) determines the drive distance of the motor 37 from the reference position detected by the reference position detecting means 38 described above.
The current position in the width direction of the microfilm F can be stored by performing calculation based on time and the number of pulses. Then, the search for micro images is started,
If the previous film type is a duo type when it is determined as a micro film F other than the duo type, the motor 37 is moved in a predetermined direction by a predetermined distance from the reference position to move the film carrier C to the micro film. It is designed to be moved in the width direction of F.

The reference position detecting means 38 is arranged so that the center position in the width direction of the microfilm F can be known, and must be passed through when the motor 37 is driven to move the film carrier C. , You can move in absolute position.

The reference position detecting means 38 may be located at the end of the microfilm F in the width direction as long as it is arranged so that the position of the microfilm F in the width direction can be known. However, when the film carrier C is moved, it must be controlled so as to pass the reference position.

In this example, the film carrier C is moved when the search is started and the film type is known, but the film carrier C may be moved when the search is completed. That is, even when the duo-type microfilm F and the non-duo-type microfilm F are used in a mixed manner, the frame number is used to input the input means 2.
The micro image input from 3 can be projected on the screen without any trouble.

However, the moving distance from the reference position is different from the reference position because the position of the microfilm F photographed on the microfilm F in the width direction differs depending on the photographing model, the photographing form, the photographing reduction ratio, and the like. The distance can be input from the input means 23 and stored.

The method of storing the movement amount from the reference position is
Conventionally, if the counting method of the mark m, the type of the mark m, and the like are not separately stored according to the specifications of the film F, it is not possible to correspond to various film body types of the film F. However, although it exists in the film carrier C, it may be configured such that it is added to the setting item of the search mode so that it is not necessary to re-input the moving distance only by selecting the search mode.

For the movement of the film carrier C in the film width direction c and d, the backlash amount generated during the operation of the carrier moving mechanism B is calculated and the movement amount is corrected, as described below. Controlled.

(7) Calculation of Backlash Amount and Correction of Movement Amount FIG. 7 is a flowchart of a calculation method for calculating the backlash amount of the carrier driving device for moving the film carrier C in the width direction of the microfilm F.

When the reference position detecting means 38 is composed of the transmissive sensor 50 and the light shielding plate 51 as shown in FIG. 5,
As a backlash amount calculation method, there is the following method as shown in the flowchart of FIG.

1) When the transmission type sensor 50 is shielded by the light shielding plate 51 (ON), the motor 37 is rotated,
By driving the microfilm carrier C in the d direction, the transmissive sensor 50 is no longer blocked by the light shielding plate 51 (O
The film carrier C is moved to the (FF) position, and the motor 37 is stopped at that position (steps S2 to S5).

Next, the motor 37 is rotated in the reverse direction to move the microfilm carrier C in the c direction (in the direction opposite to the d direction).
It drives (step S6). At this time, since the film carrier C has a backlash, the motor 3 is kept for a certain time.
Even if 7 is driven, the film carrier C does not move. After that, the film carrier C starts moving, and the transmissive sensor 50 changes from the OFF state to the ON state. Here, after rotating the motor 37 in the reverse direction, the transmission type sensor 5
It can be calculated that the time until 0 becomes ON is the amount of backlash. That is, when the motor 37 is rotated in the reverse direction, the time until the film carrier C actually starts moving can be calculated as the backlash amount (steps S7 to S11).

2) When the transmissive sensor 50 is not shielded by the light shielding plate 51 (OFF), the motor 37 is rotated and the microfilm carrier C is driven in the c direction,
The transmissive sensor 50 is blocked by the light blocking plate 51 (O
The film carrier C is moved to the (N) position, and the motor 37 is stopped at that position (steps S2, S12 to S12).
14).

Next, the motor 37 is rotated in the reverse direction to move the microfilm carrier C in the d direction (in the direction opposite to the c direction).
To drive. At this time, since the film carrier C has backlash, the film carrier C does not move even if the motor 37 is driven for a certain period of time. After that, the film carrier C starts moving, and the transmissive sensor 50 changes from the ON state to the OFF state. Here, it can be calculated that the time from the reverse rotation of the motor 37 until the transmissive sensor 50 is turned on is the backlash amount. That is, when the motor 37 is rotated in the reverse direction, the time until the film carrier C actually starts moving can be calculated as the backlash amount (steps S15 to S1).
8, S10 and S11).

The backlash amount calculated as in 1) or 2) above is controlled by the processing means 20 in the following manner.

The film carrier C is used as a microfilm F.
Since driving the motor 37 in the width direction means driving the motor 37, the processing means 20 stores the driving direction of the motor 37, and when the motor 37 drives in a direction different from the previous time, the driving amount and the back Drive by adding the rush amount.

For example, when the driving amount is 500 ms, the backlash amount is 150 ms, and the driving direction is the d direction, if the previous driving direction is the c direction, the processing means 20 outputs 500 ms.
The drive amount of +150 ms = 650 ms is driven in the d direction. If the previous driving direction is the d direction, the driving amount of 500 ms is driven in the A1 direction.

That is, the processing means 20 is configured to drive the motor 37 by adding the backlash amount to the drive amount if the drive direction is different from the previous drive direction.

At this time, only the amount of backlash is driven at high speed, and the time during which the micro image projected on the screen 30 caused by the presence of backlash does not move at all is shortened.

Although the backlash amount is calculated by the drive time of the motor 37 in this example, it may be calculated from the number of drive pulses of the motor 37. Since the amount of backlash existing in the film carrier C differs for each film carrier C, the amount of backlash may be calculated when the power of the film carrier C is turned on.
The backlash amount may be calculated only when instructed by 3, that is, when the projection position of the micro image of the microfilm F is moved in the width direction of the microfilm F, the backlash amount is calculated each time. Instead of driving, the amount of backlash may be calculated and stored in advance.

Next, when the film carrier C is driven in the width direction of the microfilm F and the image position of the micro image is automatically moved, when the movement amount is input from the input means 23, the input movement amount is input. Minute film carrier C
A method of driving with the amount of backlash corrected will be described. That is, by this, even if the backlash amount from the input means 23 is not taken into consideration, by driving the film carrier C by the input movement amount, the movement amount can be input while viewing the micro image projected on the screen 30. Is configured to be able to.

The duo-type microfilm F as shown in FIG. 12B has a transmissive sensor so that the microimages can be automatically moved to respective image positions because the microimages are imaged in the two channels. The image position can be input from the input unit 23 with 50 as the reference position. In addition, micro film F other than duo type
Is different from the image position of the duo-type microfilm F, the image position can be input from the input means 23 with the transmissive sensor 50 as the reference position. That is, the film carrier C can store three types of image position information with the transmissive sensor 50 as a reference position.

In such a configuration, when the moving distance with the transmissive sensor 50 as the reference position is input from the input means 23, the motor 3 is moved to the currently set moving position.
7 is driven, and when the moving distance is changed, the motor 37 is driven to the changed moving position. Here, when the change of the moving distance is different from the previous driving direction of the motor 37, the backlash amount is added to the change distance to obtain the motor 37.
Drive. As a result, it is possible to confirm whether or not the moving distance is set accurately, and it is possible to eliminate the positional deviation of the moving distance due to the backlash and to set the moving distance accurately.

As described above, in this example,
An image retrieval apparatus comprising a film carrier for holding a microfilm F on which a microimage is imprinted, and a film carrier width direction moving means for moving the film carrier in the width direction of the microfilm,
By moving the film carrier in the width direction of the microfilm when the position of movement of the film in the width direction is determined, the width direction alignment of the microfilm for projecting a micro image on the screen can be performed with less trouble.

Further, it has a reference position for moving the film carrier, and has means for inputting the movement amount of the film carrier from the reference position in the microfilm width direction, and a storage device for storing the movement amount. Yes, Microfilm F with different printing standard
Even when using, the amount of movement from the reference position is once set by the input means, and thereafter, the film carrier is moved so that any micro image is projected to a predetermined position only by performing a search. Therefore, it is possible to realize with a simple structure of means for moving the film in the width direction and the reference sensor, and it is possible to efficiently perform the projection operation of the micro image regardless of the imprinting standard of the micro film F.

Then, the backlash amount generated by the movement of the film in the width direction is automatically calculated, and when the film carrier is moved in the width direction of the microfilm, the backlash amount is corrected to move in the width direction of the film carrier. By controlling the means, the backlash amount can be set for each machine, and the film carrier can be moved in the width direction without worrying about the backlash. As a result, the projection position when projecting the micro image onto the screen can be set accurately, and the same amount that is desired to be input can be accurately reproduced and moved, so that the micro image can be projected onto the screen. By automating the search, it is possible to reliably display the desired image on the screen.

<Embodiment 2> (FIGS. 10 and 11) As described in Embodiment 1 above, FIG.
In order to project the micro image of the simplex type micro film F as shown in FIG.
The film carrier C could be moved to the position of the simplex type microfilm F by the shift mechanism B.

However, when the prism lens 60 is arranged on the projection optical path as the image rotating means as shown in FIG. 10, for example, the tilted projection micro image is corrected as shown in FIG. Therefore, if the prism lens 60 is rotated, the image projection position moves like Y1.

Therefore, in this example, a correction means for correcting the relative position between the film and the screen by changing the shift movement amount of the film carrier C in the film width direction according to image rotation and projection magnification will be described.

FIG. 10 shows a prism lens 6 for rotating an image.
FIG. 3 is a diagram showing a driving unit of the projection zoom lens 61 for 0 and image projection, and a rotation angle and a projection magnification detecting unit. 62 is a motor for rotating the prism lens 60, 63 is a motor for rotating the zoom lens 61,
Reference numeral 66 is a rotation angle detecting means for the prism lens 60, 67 is a rotation angle detecting means for the zoom lens 61, 64 is a manual knob, and 65 is an encoder. By operating the manual knob 64 in the forward / reverse direction, the prism lens 60 or the zoom lens 6 is interlocked with the rotation angle according to the operation rotation angle amount.
1 is rotationally controlled by an electric mechanism.

That is, when the knob 64 is rotated, this rotation angle amount is read by the encoder 65, and the rotation angle information is transmitted to the processing means 20 which is the control circuit of the apparatus. That is, the processing means 20 converts the output pulse number of the encoder 65 when the knob 64 is rotated into the rotation angle of the knob 64, and based on the angle information, the prism lens 60,
Alternatively, the rotation angle of the zoom lens 61 is calculated, and the drive signal of the prism lens motor 62 or the zoom lens motor 63 is transmitted to the motor drive control circuit 26, and the prism lens 60 or the zoom lens 61 is set as the operation rotation angle amount of the knob 64. It is rotated by the corresponding angle.

However, at this time, selection of whether to rotate the prism lens 60 or the zoom lens 61 can be performed by a select key or the like (not shown).

When the prism lens 60 is rotated,
The prism lens rotation angle detection means 66 detects the angle information and sends it to the processing means 20. When the zoom lens 61 is rotated, the zoom lens rotation angle detection means 67 detects the angle information and sends it to the processing means 20.

FIG. 11A is a diagram showing movement of an image when the micro image projected on the screen 30 is rotated by the prism lens 60. In the figure, when the prism lens 60 is rotated, the screen 3
The micro image projected on 0 moves to the position in the direction of arrow Y1.

FIG. 11B is a diagram showing the movement of the micro image projected on the screen 30 when the image is enlarged by rotating the zoom lens 61. In the figure, when the zoom lens 61 is rotated, the micro image projected on the screen 30 moves to the position in the direction of the arrow Y2.

In the above structure, when the film carrier C moves in the width direction of the microfilm, the rotation angle detected by the prism lens rotation angle detection means 66 and the rotation angle detected by the zoom lens rotation angle detection means 67 are The processing means 20 performs the calculation, and the first embodiment
As described above, the backlash amount is calculated and the movement amount is corrected.

That is, in order to enlarge to a desired magnification,
When the zoom lens 61 is rotated, the projection magnification changes as shown in FIG. 11B, and the projection lens 30 moves to the position of the arrow L2 in an enlarged manner, so that the projection lens 30 protrudes from the screen 30, so that the processing unit 20 is detected. The movement amount L2 is calculated based on the magnification and the detection unit that detects whether the image is projected without protruding from the screen by an image position detection sensor (not shown), and the backlatching amount is calculated to calculate the film carrier. Correct the movement amount of C.

Further, in order to correct the tilted image,
When the prism lens 60 is rotated, the projected image is rotated as shown in FIG. 11A and protrudes from the screen 30, so that the processing unit 20 detects the detected angle θ and the image position detection sensor (not shown). The moving amount L1 is calculated based on a detection unit that detects whether the image is projected without protruding from the screen 30. Here, the movement amount L1
Is converted from the projection magnification to correct the movement amount of the film carrier C. Also, the backlash amount is calculated to correct the movement amount of the film carrier C.

In this example, the prism lens 60 and the zoom lens 61 were driven by a motor, but the image rotation angle,
If the projection magnification can be detected, manual driving may be performed.

Since the optical axis shift of the prism lens 60 occurs due to the rotation, the image projection position may shift, but it is calculated from the rotation angle of the prism lens 60 by the optical axis shift detecting means (not shown). The optical axis shift amount of may be detected and added to the correction value.

In the duo type microfilm F, since the image capturing direction changes depending on the channel and the image orientation may be reversed when projected on the screen 30, the prism lens 60 is rotated. The image may be automatically rotated in the normal direction, and the deviation amount generated at that time may be added to the correction value.

Thus, the rotation angle of the projected image,
By adding the correction value according to the projection magnification to the movement amount, the film carrier can be moved to a predetermined position more accurately, so that a desired image can be surely displayed on the screen 30.

[0113]

As described above, according to the present invention, like a roll microfilm carrier equipped in a microfilm reader, a reader printer or the like, a long information recording medium can be conveyed to the information recording medium. An information retrieval apparatus having means for retrieving a desired image information portion recorded in 1. to a predetermined position and moving means for moving the information recording medium in the width direction. By moving the device in the width direction of the information recording medium, the position adjustment of the information recording medium in the width direction with respect to the predetermined position of the required image information portion can be performed with less effort. The desired image information portion can be projected efficiently regardless of the image information imprinting standard of the information recording medium. It is possible to reliably display the desired image information portion on the screen. It is possible to eliminate a decrease in control accuracy due to backlash that occurs when the information recording medium width direction moving means operates, and the intended purpose is often achieved.

[Brief description of drawings]

FIG. 1 is a front view of a microfilm reader printer equipped with a film carrier as an information retrieval device according to the present invention.

FIG. 2 is a perspective view of an optical system in the reader printer.

FIG. 3 is an external perspective view of a film carrier.

FIG. 4 is a perspective view of an internal mechanism of a carrier upper unit.

FIG. 5 is an enlarged plan view of a film width direction moving mechanism portion of the carrier.

FIG. 6 is a block diagram showing a main control circuit configuration of a film carrier.

FIG. 7 is a flowchart of a backlash amount calculation method.

FIG. 8 is a micro image of a simplex type micro film projected on a screen, (a)
Is a diagram when there is no image loss, and (b) is a diagram when there is no image loss

9A and 9B are micro images of a duo-type micro film projected on a screen, FIG. 9A shows a state in which image defects occur in the projected micro images of both channels, and FIG. 9B shows one channel. Of the micro image of the image projected without image loss, (c)
Is a figure when the micro image of the other channel is projected without image loss

FIG. 10 is a diagram showing driving means for a prism lens for image rotation and a projection zoom lens for image projection, and detection means for detecting the rotation angle and projection magnification.

11A is a diagram showing image movement by rotating a prism lens, and FIG. 11B is a diagram showing image movement by rotating a zoom lens.

12 (a), (b), and (c) are diagrams showing examples of a micro image imprinted on a roll micro film.

[Explanation of symbols]

1 ... Cartridge, 2 ... Capstan roller, 3 ... Support arm, 3a ... Flanger, 4 ... Spring, 5 ... Braking plate, 7 ... Film guide roller, 8 ... Take-up reel, 9 ... Braking plate, 14 ... Lamp, 15 ... condenser lens, 16 ... projection lens, 17 ... detecting means, 17a ... A channel side detecting means, 17b ... B channel side detecting means, 20 ... processing means, 21 ... transfer section, 22 ... storage section, 23 ... input means Two
4 ... Arithmetic unit, 25 ... Control unit, 26 ... Motor drive control circuit, 27 ... Display unit, 30 ... Screen, 31a ... Oblong hole,
31b ... elongated hole, 32 ... film carrier lower unit,
32a ... film carrier upper unit, 32b ... film carrier upper unit bottom plate, 33a ... guide pin, 34 ... rack, 35 ... long hole, 36 ... pinion gear,
37 ... Motor, 38 ... Position detecting means, 60 ... Prism lens, 61 ... Zoom lens, 62 ... Prism lens motor, 63 ... Zoom lens motor, 64 ... Manual knob, 65
Encoder, 66 ... Prism lens rotation angle detection means, 67 ... Zoom lens rotation angle detection means, C ... Film carrier, M1 ... Extraction motor, M2 ... Rewinding motor, M3 ... Winding motor, RP ... Reader printer, S1 ... Solenoid, S2 Brake solenoid, S3
… Brake solenoid.

Claims (8)

[Claims] 1. A means for conveying an elongated information recording medium to locate a desired image information portion recorded on the information recording medium at a predetermined position, and a movement for moving the information recording medium in the width direction. In the information retrieving device having means, a reference sensor for controlling movement of the information recording medium in the width direction is provided, and the number of pulses from the reference sensor or the amount of movement of the information recording medium in the width direction, An information retrieval device comprising means for automatically calculating and correcting the amount of backlash that occurs when the moving means operates. 2. An input means for inputting a longitudinal movement amount of a long information recording medium, a detecting means for detecting a current position of the information recording medium in the longitudinal direction, and a movement amount inputted by the input means. And comparing the detection result of the detection means,
An information recording medium by determining means for determining whether or not the information recording medium has moved by the amount of movement input by the input means, a drive device for moving the information recording medium in the width direction, and controlling the drive device. In an information retrieving device having an information recording medium width direction moving device that moves the projection position so that the image information of is projected to a predetermined position, a reference sensor for controlling the movement of the information recording medium in the width direction is provided. And a means for automatically calculating and correcting the number of pulses from the reference sensor, or the amount of movement of the information recording medium in the width direction that moves with time, by automatically calculating the amount of backlash that occurs when the moving means operates. An information retrieval device characterized by: 3. The information retrieval apparatus according to claim 1, wherein the image information position in the width direction of the information recording medium is input by a distance from a reference position, and the input means is input. An information retrieval device comprising: a moving unit that moves the moving amount, and moving the moving amount by correcting the backlash amount when the moving amount is input from the input unit. 4. The information retrieval apparatus according to claim 1, wherein the drive speed for backlash drive is higher than the drive speed for moving the information recording medium in the width direction. An information retrieving apparatus comprising: an information recording medium width direction moving means that is driven to a position. 5. The information search device according to claim 1, wherein the image position of the information recording medium on which the image information of two channels is imprinted in the width direction is set for each channel. An input means for inputting a distance from the reference position, an input means for inputting an image position of an information recording medium having image information of one channel imprinted in the width direction at a distance from the reference position, and a width direction When the information recording medium is changed from an information recording medium having two channels imprinted to an information recording medium having one channel imprinted in the width direction, one channel is imprinted in the width direction. Automatically moves to the image position on the information recording medium, or 1 in the width direction
Information in which two channels are imprinted in the width direction when the information recording medium is changed from an information recording medium in which one channel is imprinted to an information recording medium in which two channels are imprinted in the width direction An information retrieving apparatus comprising a moving unit that automatically moves to an image position of any channel of a recording medium. 6. The information retrieval apparatus according to claim 1, wherein the rotation means rotates the projection image of the information recording medium, and the rotation angle detection detects the rotation angle of the rotation means. An information retrieval apparatus comprising: a means, a means for detecting an image projection magnification of the information recording medium, and a correction means for correcting a movement amount of the information recording medium in the width direction from the rotation angle and the image projection magnification. 7. The information search device according to claim 1, further comprising a communication unit for communicating with an external device,
An information retrieving apparatus characterized in that an information recording medium is moved to a predetermined movement position in the width direction at the time of starting a search or before the start of a search based on information from the external device. 8. The information retrieval device according to claim 1, wherein the information recording medium is a roll microfilm, and the device is a microfilm carrier. .