JPH0210931B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording device that detects the length of an unrecorded tape-like film, warns an operator that the amount of film is running low, and controls subsequent recording operations. In particular, the present invention relates to a device for controlling the operation of a microfilm camera by detecting the end of unexposed film wound on a reel or the like, that is, the remaining amount of film.

The invention will now be described with reference to a microfilm camera.

Conventional microfilm cameras detect the film roll diameter, etc. when the amount of film remaining is low (approximately 2 m), and issue an alarm, such as a display with a lamp or a sound such as a buzzer, to notify the operator that the amount of film is running low. It has a built-in mechanism to let you know. Generally, this is done by a combination of a display using a lamp or the like and a sound. When this alarm is issued, the operator immediately stops photographing, and before taking out the photographic film, advances the film by a certain amount manually or by operating a button to prevent the photographed image from being exposed to external light.

However, since this method is a manual process, it is necessary to take out the photographic film without advancing the film.
There are times when I make the mistake of exposing the photographed image to external light. Therefore, such a device requires the operator to be highly skilled and has poor workability.

Further, even if this warning is issued, the operator is allowed to take pictures, so the operator ignores the warning and continues taking pictures, and there may be a situation where there is not enough film remaining and it is not possible to advance the required amount of film. At this time, a buzzer or the like is ringing during the shooting, which causes discomfort not only to the worker but also to those around them.

In order to improve the above-mentioned drawbacks, a method may be considered in which the sheet feeding operation is stopped when a detection signal indicating the remaining amount of film is output, and then the film is automatically fed by a certain amount.

However, if one group of subjects cannot be photographed midway through the process, the remaining subjects will have to be photographed on another microfilm, which will be troublesome when the photographic film is used at a later date.

In order to improve the above-mentioned operational failures and shortcomings in the utilization of photographic film, the present invention determines the presence or absence of a subject at the time when a detection signal of the remaining amount of film is output, and performs paper feeding operation and film operation. It is designed to control the feed. By doing so, operational troubles can be resolved by simply displaying a lamp or the like on the alarm device, and an alarm using a buzzer or the like becomes unnecessary, resulting in cost reduction.

The present invention includes an exposure means for exposing an image of a recording medium onto a roll film, a film feeding means for feeding the roll film from a supply section through an exposure means to a winding section, and a recording medium placed on a mounting table. A recording material feeding means for feeding the recording material through the recording position to the discharge section, a film detection means for detecting the amount of roll film in the supply section and generating a specific output when a predetermined amount of film is reached, and a recording material on the mounting table. A recording object detection means detects the presence or absence of a body, and when the specific output is generated in response to the outputs of both detection means, a predetermined amount of film is transferred from the supply section to the winding section if there is no recording object. The film feeding means is operated for a certain period of time to supply the film, and when there is a recording material, the recording material feeding means is operated for a certain period of time to expose a predetermined amount of the recording material to the film, and the recording material is fed. When the recording medium feeding means is stopped, the film feeding means is operated for a certain period of time regardless of the presence or absence of the recording medium, and when the specific output is not generated, the film feeding means It is an object of the present invention to provide a recording apparatus equipped with a means for controlling activation and deactivation of a film feeding means depending on the presence or absence of a recording medium.

The present invention will be explained below with reference to the drawings.

FIG. 1 shows an outline of a microfilm camera embodying the present invention.

The automatic object feeder 1 includes an object mounting table 3 that is tilted so that objects 2 such as checks, bills, stock certificates, and slips slide down, a paper feed roller 4 that feeds objects one by one, and a separation roller. It consists of 5. Paper feed roller 4 is separation roller 5
Constructed from a material such as rubber with a higher mass coefficient,
Paper feed roller 4, which is kept constantly rotating as shown by the arrow
sends out the top object 2'. At the same time, the second and subsequent sheets of the subject 2 are also being sent out, but the separation roller 5 stops the second and subsequent sheets until the first sheet is sent out, and the sheets are fed one by one. Paper feed roller 4
The separating roller 5 is coupled to a power source (not shown) via a clutch (not shown) that controls the paper feeding operation.

The subject fed from the automatic subject paper feeder is detected by the illumination light source 6 and the light receiving element 7, and is further conveyed to two separated glass flat plates 10 by a pair of feed rollers 9 disposed in the photographing section 8. After being fed to a photographing position between 11 and 11 and being photographed, it is discharged onto a tray 13 by a pair of discharge rollers 12 .
In the figure, 14 is a lamp for illuminating the subject, 15 is a photographing lens, 16 is a shutter, and 17 is a slit.

The subject 2 operates the shutter 16 based on the detection signal from the light receiving element 7. This signal remains on until the subject 2 is ejected from the ejection roller 12. When the subject 2 passes through the photographing position, it is projected by the photographing lens 15 onto the microfilm F of the exposure section 18 and is photographed onto the film in a rotary manner by slit exposure.

The microfilm F is wound around a supply reel 19, passes between a capstan roller 20 and a pinch roller 21 disposed in the exposure section 18, and is wound onto a take-up reel 22.

A pair of feed rollers 9, discharge roller 12, and capstan roller 20 are driven by the same drive source (not shown)
It rotates while maintaining a constant rotation ratio.

A rotary arm 24 equipped with a roller 23 that contacts the outer periphery of the unexposed film wound on the supply reel 19 is rotatably mounted by a fulcrum shaft 25, and a spring 26 is installed so that the roller 23 is always pressed against the unexposed film. is connected to a rotating arm.

As photography continues, the amount of unexposed film (remaining film) decreases, and one end of the rotating arm turns on the micro switch 27 to output a remaining film detection signal.

As mentioned above, the illustrated recording device includes tape-like film recording means (in the illustrated example, the photographing devices 8, 1
0, 11, 14, 15, 16, 17) and tape-like film feeding means (in the illustrated example, 19, 2
0, 21, 22), feeding means for the recording medium (in the illustrated example, the automatic object feeding device 1, the feeding roller 9, and the ejection roller 12), and means for detecting the length of the unrecorded tape-like film. (in the illustrated example, a rotating arm 24 and a microswitch 27), and an alarm means that issues an alarm based on a detection signal generated by the microswitch 27.

According to the present invention, in the above-mentioned recording apparatus, the object mounting table is configured to actuate the alarm means based on the signal from the detection means, and at the same time determine the presence or absence of the object to be recorded, that is, the object, and control the feeding means for the object. A micro switch 28 is disposed below the switch 3. This micro switch 28 is connected to the subject mounting base 3.
This is a subject detection sensor that detects the presence or absence of the subject 2 above.

FIG. 2 shows an embodiment of the invention. In the figure, 27
Reference numeral 28 indicates a film remaining amount detecting sensor consisting of the microswitch shown in FIG. 1, numeral 28 indicates an object detecting sensor consisting of the microswitch shown in FIG. 1, and numeral 7 indicates the light receiving element shown in FIG. Reference numeral 51 denotes an object detection circuit which outputs an "H" level signal when an object is present on the object mounting base 3 using the micro switch 28, and outputs an "L" level signal when there is no object.
Reference numeral 52 denotes an AND gate, and 53 a monomulti, which detects that the amount of film is running low by detecting the remaining amount of film, and also performs a sheet feeding operation for a certain period of time using a timer that operates when there is a subject on the subject mounting table 3. 54 is an OR gate, 55 is a clutch (1) drive circuit that drives the paper feed roller 5 that feeds the object on the object mounting table 3, and 56 is a remaining amount detection sensor 28.
a remaining amount film detection circuit that outputs an "H" level when there is enough film due to a change in the amount of film, and outputs an "L" level when the film is running low;
57 is an inverter, and 58 is an OR gate. 5
Reference numeral 9 denotes a flip-flop which is set when the film runs out, 60 is an AND gate, and 61 is a monomulti, which is activated when the film is set, and generates a reset signal for resetting the flip-flop 59. 62 is an inverter,
Reference numeral 63 denotes a monomulti for automatically feeding the film when the sheet feeding operation is stopped, and the capstan roller 21 is driven by a signal generated thereby. 64 is a clutch (2) drive circuit that drives the capstan roller 21 with the "H" level output of the OR gate 66; 65 is a drive circuit for detecting the fed paper;
“H” detects and drives the shutter and clutch.
The shutter clutch signal generating circuit 66 is an OR gate that outputs a level.

Now, regardless of whether there is an object on the object mounting table 3 or not, if there is enough film, the output of the flip-flop 59 is at the "H" level, and the inputs of the AND gate 60 are both at the "H" level. The AND gate 60 outputs an "H" level, and this signal passes through the OR gate 54 to operate the clutch (1) drive circuit 55. Therefore, the paper feed roller 4 is driven and the object on the object mounting table 3 is fed. The fed object is detected by the light receiving element 7, a shutter clutch drive signal is generated, and an OR gate 66 is generated.
is opened to operate the clutch (2) drive circuit 64 and rotate the capstan roller 21. The film is advanced in synchronization with the subject to photograph the subject.

As shooting continues, the amount of unexposed film (remaining film) decreases, and the remaining amount detection sensor 27 (micro switch) operates, causing the remaining amount of film detection circuit 5 to operate.
The output signal from 6 changes from the "H" level to the "L" level. This signal is inverted by an inverter 57, and a flip-flop 59 is set by the rising signal. At the same time, the alarm drive circuit 67 is activated to issue an alarm to detect the remaining amount of film. Further, the AND gate 60 closes in response to the signal from the remaining film detection circuit 56.

However, when there is an object on the object mounting table 3, the object sensor 28 detects the object, so the object detection circuit 51 outputs an "H" level signal, and the flip-flop 59 also outputs an "H" level signal. AND gate 52 opens the gate. This rising signal activates the monomulti 53 and continues the sheet feeding operation for a certain period of time.

Further, if there is no subject on the subject mounting table 3, the AND gate 52 will not open even if the remaining amount detection sensor 27 is activated, and the monomulti 53 will not operate and the paper feed roller will be stopped. When the drive clutch of the paper feed roller stops, this signal passes through the inverter 62 and triggers the monomulti 63 to output a signal for a certain period of time. In response to this output, the clutch (2) drive circuit 64 is actuated by the OR gate 66 to rotate the capstan roller 5 for a certain period of time to feed the unexposed film and prevent the photographed image from being exposed to external light. When a new film is loaded, the remaining amount detection sensor 27 causes the output signal of the remaining amount detection circuit to go from "L" to "H" level. This rising signal triggers the monomulti 61 and flips the flip-flop 59.
A reset signal is input from the OR gate 58.

As a result, the flip-flop 59 is reset and the output changes from the "L" level to the "H" level, and the AND gate 60 is opened to perform the sheet feeding operation.

FIG. 3 shows another embodiment of the present invention, in which an AND gate 101 is added to FIG. 2 to enable paper feeding operation for a certain period of time when there is a subject, and if the subject disappears within this certain period of time. Sometimes, the AND gate 101 is closed and the sheet feeding operation is immediately stopped, and then the film is fed.

As described above, the present invention controls the paper feeding operation regardless of whether there is an object in the photographic paper feeding unit or not when the film remaining amount detection circuit is activated, and if there is no subject, photography is prohibited and automatically By allowing the film to advance, it is possible to forget the blank advance as in the conventional method, and to prevent the mistake of exposing the photographed film to external light.

Also, if there is a subject to be photographed, it is possible to shoot for a certain period of time after the remaining amount is detected, so if there is only a small amount of the remaining subject, the remaining subject can be photographed after the film that has been photographed so far, and the photographed film can be searched for at a later date. In this case, searching is easy because the same group of subjects are photographed on one roll of film.

Also, if you use a manual switch to advance the film after detecting the amount of film remaining, as in the past, you can avoid the mistake of shortening the length when you continue shooting and then try to feed the required amount of film at the end. be.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an outline of a microfilm camera embodying the invention, FIG. 2 is a block diagram showing one embodiment of the invention, and FIG. 3 is a block diagram showing another embodiment of the invention. . DESCRIPTION OF SYMBOLS 1... Subject automatic paper feeding device, 2... Subject, 3... Subject mounting stand, 4... Paper feeding roller, 5... Separation roller, 6... Illumination light source, 7... Light receiving element, 8... Photographing section,
9...Feed roller, 10, 11...Glass flat plate, 1
2...Ejection roller, 13...Tray, 14...Lamp, 15...Photographing lens, 16...Shutter, 17
...Slit, 18...Exposure section, 19...Feed roller, 20...Capstan roller, 21...Pinch roller, 22...Take-up reel, 23...Roller, 2
4... Rotating arm, 25... Fulcrum shaft, 26... Spring, 2
7...Micro switch (remaining amount detection sensor), 28
...Micro switch (subject detection sensor), 51
...Subject detection circuit, 52...And gate, 53...
Monomulti, 54...Orgate, 55...Clutch
(1) Drive circuit, 56...Film remaining amount detection circuit, 57
...Inverter, 58...OR gate, 59...Flip-flop, 60...AND gate, 61...Mono multi, 62...Inverter, 63...Mono multi, 6
4...Clutch (2) drive circuit, 65...Shutter clutch signal generation circuit, 66...OR gate, 101...AND gate.

Claims (1)

[Scope of Claims] 1. Exposure means for exposing an image of a recording medium onto a roll film; film feeding means for feeding the roll film from a supply section through an exposure means to a winding section; A recording material feeding means for feeding a recording material through a recording position to a discharge section, a film detection means for detecting the amount of rolled film in the feeding section and generating a specific output when a predetermined film amount is reached, and a mounting table. A recording object detection means for detecting the presence or absence of a recording object on the top, and when the specified output is generated in response to the outputs of both detection means, the output is sent from the supply section to the winding section if there is no recording object. The film feeding means is operated for a certain period of time to feed the film by a predetermined amount, and when there is a recording material, the recording material feeding means is operated for a certain period of time to expose a predetermined amount of the recording material to the film. The film feeding means is operated in response to the feeding of the recording object, and when the recording object feeding means is stopped, the film feeding means is operated for a certain period of time regardless of the presence or absence of the recording object, and the specified output is performed. and a means for controlling the operation or non-operation of a film feeding means depending on the presence or absence of a recording medium when the recording medium is not generated. 2. Claims characterized in that, when the recording medium feeding means is operated for a certain period of time and there is no recording medium, the control means stops the recording medium feeding means before the certain period of time has elapsed. The recording device according to item 1.