JPS6095522A - Retrieving device for micro roll film - Google Patents

Abstract

PURPOSE:To make automatically position correction in subsequent image retrieval after initial correcting operation is performed once by providing a driving means which moves a micro roll film through a projection position, a mark detecting means for an image, correcting means which corrects and moves the micro roll film to a proper projection position, and control means which controls the driving means. CONSTITUTION:The micro roll film 1 is moved in a payoff and a take-up direction shown by an arrow P by being driven by motors 4 and 5 coupling a payoff roll 2 and a take-up reel 3. The correcting means which corrects and moves the roll film 1 to the proper projection position consists of a switch 24 and drives the motors 4 and 5 until a position correction of an image A is made. The control means which corrects the position of the roll film 1 automatically after the correction is made with the switch 24 consists of an RC timer 28, counter 29, comparator 30, counter 31, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a micro roll film retrieval device f K in a reader printer or the like.

In order to search for frames on micro-roll film, conventional technology leader printers print blip marks of the film's base density and rising density corresponding to each frame on the non-image area of the side edges of the film. As the film is driven, the blip marks are counted by a predetermined counting means, and when the counted value matches the desired frame number, the film is stopped and the desired image is retrieved. Things are now more efficient/11 than before. However,
The position of the blip mark on the film with respect to the image is not limited, and images are taken at various positions depending on the film. Therefore, when the frame at RJ is searched and the film stops, and the image of that frame is enlarged and projected onto the screen through the optical system, the position on the screen at which the image stops depends on the position of the blip mark relative to the image. will be done.

On the other hand, the stopping position of the blip mark is determined by the mounting position of the sensor that reads the mark. Therefore, if the printing position of the blip mark on the film and the mounting position of the sensor are incorrect, the image will stop at the appropriate position on the screen, but when copying this image, problems such as part of the image being missing may occur. Become.

Conventionally, in order to deal with such problems, the position of the sensor that reads the mark was moved in the longitudinal or width direction of the roll film to correct the stop position of the blip mark and bring the image to the correct position on the screen. I corrected it like this. However, with such correction means, the structure of the mark detection part becomes complicated and requires precision machining, which not only makes the device expensive, but also has drawbacks such as fluctuations in the position of the sensor due to vibration etc. It also has

Purpose This invention solves the above-mentioned problems in the conventional example and provides a micro-roll film retrieval device that can stop a retrieval image at an appropriate position on a screen using an electrical correction means with a simple circuit configuration. It is [1 target] to do.

Embodiment The present invention comprises a drive means for moving a micro-roll film through a projection position, a mark detection means for detecting a blip mark u1 spread corresponding to a piece of the micro-roll film; Activating the drive means described above,
a correction means for correcting and moving the micro-roll film, which stops when the blip mark is detected by the mark detection means, to an appropriate projection position, and moving a frame of the micro-roll film to an appropriate projection position IW by the correction movement during retrieval; An embodiment thereof will be described below with reference to FIGS. 1 to 5.

In FIG. 1, reference numeral 1 denotes a micro-roll film, on the edge of which various blip marks corresponding to each frame are imprinted.

The driving means for running the micro roll film 1 consists of motors 4 and 5 connected to the supply reel 2 and take-up reel 3, respectively. .7.8 in the feeding and winding direction indicated by the arrow P.

A pressure-bonded glass 9 is placed at a projection position midway along the film running path, and the light from the light source IO passes through the condenser lens 11,
The optical system transmits the roll film l on the pressure-bonded glass 9 through the reflection mirror 12 and the condenser lenses X'l 3 and 14, and projects the film image onto a screen (not shown) above it through the projection lens 15. It is assembled.

6-16 is a mark detection means, and the blip mark corresponding to the frame of the roll film l that has come to the projection position is detected by this mark detection means 16.

A slit disk 17 is attached to one of the guide rollers 8, and the movement of the film 1 is electrically controlled by the slit disk 17 and a pair of a light emitting element 18 and a light receiving element 19 facing each other with the slit disk 17 sandwiched therebetween. A pulse encoder 20 for detecting film shift 1σ1 is formed to convert the signal into a pulse waveform.

FIG. 2 shows a partial configuration of a circuit constructed using a microcomputer as part of the control section of the apparatus of this embodiment.

In the figure, reference numeral 21 denotes a mark reading circuit that counts detection signals outputted by the mark detection means 16 each time the mark detection means 16 reads a blip mark. This count output is input to the OPU (Central Processing Unit) 22, and when the count value reaches the value corresponding to the desired piece, a stop signal is sent from the PU22 to the motor control circuit 23, which causes the motor 4.5. The sensor 1 of the mark detection means 16 stops as shown in FIG.
6a is covered with a blip mark M, and in a state where the search for the image A corresponding to this mark M is completed and the roll film 1 is stopped, a key mark F representing the proper position on the screen SL corresponding to a specific paper size is displayed. If the search image A at this time is properly located in the range surrounded by ..., there is no need to correct the position of the image, but as shown in Fig. In the previous case, if the blip mark M is also biased to the right side (in Figure 3, the blip mark M is on the left side of image A, but in Figure 4, it is in the center of image A), the search is completed and the image is When A stops,
Kenshiga @! A part of image A is out of the proper position on screen S and cannot be copied properly. Therefore, in this case, it is necessary to move the roll film 1 further by X amount from the stop position and correct the position of image A. There is.

In the circuit configuration shown in FIG. 2, the correction means for correcting and moving the roll film l to the proper throwing position ft2 as described above is comprised of a switch 24, which is interposed between a motor control circuit 23 and motors 4 and 5. By turning on the switch 240, the input side of the switching circuit section 27, which includes the OP amplifier 25, transistor 26, etc. After the correction by the switch 24 is performed,
The control means for automatically correcting the position of the roll film l each time a search is completed includes an RO timer 28, a counter 29, a comparator 30s counter 31, etc. in the circuit configuration shown in FIG. roll film 1
The pulse signal from the film movement detection pulse encoder 20 that is output as the RO timer 2 moves
8 and is shaped into a square wave, counter 29.3
One of the counters 29, which is inputted to each of
When the position is corrected by turning on the counter 29, the counter 29 can count 1 as long as 1O-. switch 24
In the above position correction operation, the image position Il! at the end of the search shown in FIG. Since the roll film l is moved by the correction 11x from , the count value of the counter 29 during this period corresponds to the image position correction JAkXK. This counter 29 holds the count value until the switch 24 is turned on next time, and the count value is output to the comparator 30. On the other hand, the other counter 31 keeps counting while the roll film 1 is moving, and 0PU2
When a reset signal is received from 2, the count value is cleared to 0. The 0PU 22 outputs the reset signal when the mark detection means 16 detects a blip mark corresponding to a desired frame of the roll film 1 and the film 1 stops, and at the same time outputs the reset signal to the comparator 30 to start the comparison. It provides a command signal and also provides a motor drive signal to the motor control circuit 23. As a result, the counter 31 starts counting pulse signals corresponding to the correction movement of the film 1.
0PU22 until comparator 30 issues a match signal.
continues to output the motor drive signal to the motor control circuit 23. When the count value of the counter 31 matches the count value of the counter 29 as the motors 4 and 5 are driven, an interrupt is applied from the comparator 30 to the 0PU22, and the 0
A command signal for stopping the motor is given from the PU 22 to the motor control circuit 23. Due to this K, the image on the film 1 is always stopped at an appropriate position on the screen.

In one roll film 1, the position of the blip mark with respect to the image is the same for all images, so after searching for the first i+11 image, switch 24
If the image position is corrected by the 0-on operation, the image position will be automatically corrected by the control operation every time an image is searched thereafter.

The search for a desired image is based on data corresponding to the image being input to the 0PU 22 by an external operation.
Data corresponding to this is sent from the OPυ 22 to the motor control circuit 23, and the motor 4.5 is driven until a blip mark corresponding to the desired image is detected.

In the above embodiment, the case where the blip marks corresponding to the pieces are all the same has been explained. However, if multiple types of marks with different sizes are to be discriminated and read to search in different modes, the above q- In the counter 29, the number of registers for holding count values may be provided as many as the types of marks, and the correction movement amount for each mark may be held separately in each register.

Further, to detect the amount of film movement, a pulse encoder 20 consisting of a slit disk 17 that follows the movement of the film 1 is used. If the Hals encoder 20 is directly attached to the fourth and fifth axes, image positioning can be performed with higher precision.

The position of the blip mark in the width direction of the roll film 1 is determined by the standard, but in order to cope with non-standard films, the position of the blip mark in the width direction of the roll film 1 is set differently on the film guide roller 32 as shown in Figure 5. It is also possible to connect a pressure device 33 and finely adjust the position of the 1llll image in the width direction by using the pressure gauge 33.

Effects According to the present invention, a driving means for moving a micro-roll film through a projection position, a mark detection means for detecting a blip mark provided on the micro-roll film corresponding to a frame thereof, and the driving means Activate the
The micro roll film that stops when the blip mark is detected by the mark detection means is placed at an appropriate projection position of 1 kr.
A correction means for moving K correction, and a frame of the micro roll film at an appropriate 1F projection position 1F by the correction movement amount at the time of search.
and a control means for controlling the driving means to move the drive means to a position of 1, even if the image on the micro-roll film that is searched and stopped by reading the blip mark deviates from the proper position due to a difference in the mark position with respect to the image. By performing only the initial correction operation K, position correction can be performed automatically in all subsequent image searches, and the circuit configuration thereof is also relatively simple.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view showing the mechanical part of an embodiment of the present invention, FIG. 2 is a circuit diagram showing the control part, and FIGS.
The figures are an explanatory diagram of the amount of image position correction, and the fifth
The figure shows a mechanism for correcting the position in the film width direction. l... Micro roll film, 16... Mark detection means, Applicant: Minolta Camera Co., Ltd. 17-

Claims (1)

[Scope of Claims] Driving means for moving the micro-roll film through the projection position IW; Mark detection means for detecting blip marks provided on the micro-roll film corresponding to the frames; 1. Activating the driving means. correcting means for moving the micro-roll film stopped in a state where the grip mark is detected by the mark detection means in the hIT forward direction to a proper projection position; and a control means for controlling the drive means to move the micro roll film to a projection position.