JPS6329745A - Transfer device for information recording medium - Google Patents

Abstract

PURPOSE:To finely adjust the position of a picture screen, by fitting a switch for closing path to a knob provided on a film winding shaft under a manually movable condition and driving a rewinding motor by releasing the brake of the winding shaft by means of the path closing signal of a switch. CONSTITUTION:A DC power source 19, such as battery, etc., comparator 20, and photocoupler 21 which prevents malfunctions caused by noises, such as static, etc., are provided. Simultaneously with the output of the photocoupler 21 to a 1st control circuit 22 which releases the brake of a winding shaft 11 by inputting it to a 2nd control circuit 23 which drives a rewinding motor M2 the actuation of a brake solenoid SOL3 is released and tension is applied to a film by actuating the rewinding motor M2 when fine adjustment is made on the position of the film. As a result, the film is not slackened and a knob 17 can be rotated soothly. Thus the function of the knob an be multiplexed.

Description

Detailed Description of the Invention A. Purpose of the Invention [Industrial Field of Application] The present invention provides an optical system for transporting an information recording medium such as a microfilm wound into a roll to optically record information on the information recording medium. The present invention relates to a microfilm reader that projects images onto a screen via a system, and a transfer device for an information recording medium in a microfilm reader printer that prints the projected image.

[Conventional technology]

BACKGROUND ART In recent years, with the increase in publications and documents, it has become widely used to reduce the size of this large amount of information and record it on microfilm as an information recording medium. The information recorded on this microfilm is projected onto a screen of a known microfilm reader, reader printer, or the like for observation, or is printed for use.

There are various types of microfilm, but long films are usually stored in rolls in reel magazines. In a microfilm system using this roll film, the film is sent out from the supply reel, passed through the projection section, and then wound onto the take-up reel or rewound onto the supply reel to obtain the desired image in the film. I am trying to search and project that part.

In such a film system, microfilm is automatically fed by a motor, and when a desired image on the microfilm is retrieved, the motor is stopped to stop the film.

Figure 3 shows an example of a microfilm reader.
In the figure, 1 is a film supply cartridge that stores the microfilm F in a roll, 2 is a cartridge, a capstan roller for feeding out the microfilm in the cartridge, Ml is a motor that drives the capstan roller 2, and M
2 is a spool motor for rewinding the film in the cartridge, and SOL l is a solenoid that brings the capstan roller 2 into contact with the microfilm F via the support arm 3.

4 is a support arm 3-plunger 3a/capstan roller 2
5OL2 is a brake solenoid for the film rewinding motor M2, and this brake solenoid SQL2 is rotatable when the spool motor M2 is rotatable when the brake solenoid SQL2 is not activated. SQL2
When does not operate, spool motor M2 can rotate,
When the brake lever maid SQL 2 is activated, it attracts the brake plate 5 fixed to the motor shaft to prevent rotation of the spool motor M2.

6 and 7 are film guide rollers, 8 is a take-up reel, M
Reference numeral 3 indicates a film winding motor for driving the take-up reel 8, and SQL 3 indicates a brake lever for the motor M3.

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

14 is a lamp for illuminating the microfilm F, 15 is a condenser lens, and 16 is a projection lens for enlarging and projecting the image of the film F illuminated by the lamp 14 onto a screen.

In the above configuration, when a loading instruction is given, the motor M1 rotates and the solenoid SQL1 is activated, causing the capstan roller 2 to come into contact with the microfilm F coming out of the cartridge 1 and remove the microfilm. Pull out.

The tip thereof is fed toward the take-up reel 8. When the leading edge of the microfilm approaches the take-up reel 8, the winding remoter M3 rotates, and when the leading edge of the microfilm winds around the take-up reel 8 and autoloading is completed, the motor M1 and solenoid SQL 1 stop operating. The microfilm F is continuously fed by the rotation of the take-up reel 8.

While looking at the image displayed on the screen, when the desired image appears, send some kind of stop signal to stop the feeding, and the pre-kinlenoid SQL 3 is activated and the winding shaft 1 is activated.
1, and the same SQL 2 also brakes the shaft of motor M2 to stop the inertial rotation of the delivery spool.

In such a configuration, the stop position of the film is not constant due to changes in the film feeding speed due to changes in the diameter of the film with respect to the reel 8 and the feed reel of the cartridge 1, and the film is projected onto the screen through the lens 16. This causes a slight shift in the position of the frame image. Therefore, when making a hard copy of an image projected on a screen using a printer, it is necessary to finely adjust the top position of the frame image on the screen.

Since the image on the screen is enlarged from several times to several tens of times the size of the film image, fine adjustment of the image on the screen requires highly accurate fine adjustment of the film image.

A known method for fine adjustment is to drive motors M2 and M3, but this requires rotation at extremely low speed9.
During normal film feeding, it is necessary to feed the film at high speed, so the motor must rotate at high speed.

Since these rotation ratios need to be approximately 1:10,000, it is difficult to make fine adjustments using only motor drive.

Another option would be to provide a clutch mechanism and change the gear ratio, but the structure would be complicated. Therefore, as a simple method, fine adjustments have been made by manually turning a knob 17 attached to the winding shaft 11.

[Problem that the invention seeks to solve]

However, with the above fine adjustment mechanism, the brake solenoid SQ
With L3 in operation, it was difficult to turn the knob 17, and even when the knob 17 was turned, the film would sag, causing the image on the screen to be out of focus.

The present invention has been made to solve the above problems, and aims to provide a film transport device that can finely adjust the image position on the screen by simply rotating a knob without causing the film to sag. purpose.

Summary: Structure of the Invention [Means for Solving the Problems] The present invention relates to a method for transporting an information recording medium in which the information recording medium is transported and recorded information in the information recording medium is projected onto a screen via an optical system. In the apparatus, a knob provided on the winding shaft of the information recording medium to finely adjust the position of the image projected on the screen, and a switch provided on the knob so as to be closed when the knob is grasped. , comprising a first control circuit that operates simultaneously in response to a closing signal from the switch to release the brake of the winding shaft, and a second control circuit that drives the rewind motor of the information recording medium. This is an information recording medium transport device.

[For production]

Since the knob of the present invention is provided with a switch that closes when pinched, the brake of the winding shaft is released and the rewinding motor is driven by this sweep 2,000 closing signal, and the knob is rotated without sagging the film. It can be easily rolled up.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing the configuration of the knob 17. This knob 17 is provided with electrodes El-E2 as a touch sensor.
This electrode ElφE2 is located.

Therefore, when you pinch the knob 17 with your fingertips to turn it, the electrode E
1 and E2 are short-circuited through the fingertips,
A closing signal due to this short circuit is supplied to the next circuit via contacts 181-182 that contact the extraction electrodes E1◆E2.

FIG. 2 shows an example of the circuit. In FIG. 2, 19 is a DC power source such as a battery, 20 is a comparator,
21 is a photocoupler for preventing malfunction due to noise such as static electricity.

Wind up the output of this photocoupler 21 at the same time! dol
By inputting the input to the first control circuit 22 for releasing the brake of L and the second control circuit 23 for driving the rewind motor M2, the operation of the pre-kinlenoid SOL 3 is released during fine adjustment of the film position. The rewind motor M2 is operated to apply tension to the film. As a result, the knob can be easily rotated without causing the film to sag.

Further, when used in a league printer or the like, for example, by giving the knob 17 a function of printing by pushing or pulling it, the function of the knob becomes multifunctional.

Further, in the above description, a case was described in which a touch sensor was used, but a switch such as a microswitch may also be used.

C. Effects of the Invention As described above, according to the present invention, a switch is attached to the knob provided on the film winding shaft, and the switch is closed when the knob is pinched with the fingertips, and the closing signal of this switch is used to apply the brake of the winding shaft. Since the rewind motor is driven when the film is released, the knob can be easily rotated, and the image position on the screen can be finely adjusted by rotating the knob without causing the film to sag. There is an effect.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the configuration of a knob applied to an information recording medium transfer device according to an embodiment of the present invention, and FIG. 2 is an electric circuit diagram using a closed circuit signal of 2,000 sweeps provided on the knob. FIG. 3 is a perspective view showing the information recording medium transport device. F... Information recording medium (film), 17... Knob,
El/E2...Switch (electrode), 22...First control circuit, 23...Second control circuit. Patent applicant: Canon Corporation qn6- Figure 1 "2 Figure 2

Claims (1)

[Claims] (1) Fine adjustment of the position of the image projected on the screen in an information recording medium transport device that transports the information recording medium and projects the recorded information on the information recording medium onto a screen via an optical system. a knob provided on the winding shaft of the information recording medium; a switch provided on the knob so as to close when the knob is grasped; 1. An information recording medium transport device comprising: a first control circuit for releasing a brake on a shaft; and a second control circuit for driving a rewind motor of the information recording medium.