JPH06258720A - Information recorder - Google Patents

Abstract

PURPOSE:To always enable a user to visually discriminate whether an information recording medium is negative or positive by providing a means for detecting the quantity of image light, a means for discriminating the negative and the positive polarity of the information recording medium based on the detected result, and a means for displaying the discriminated result. CONSTITUTION:At the time of copying, the image light from microfilm (information recording medium) 1 passing through a projecting lens 5 is reflected by plane mirrors 9 and 10, and passes through the slit 13a of a slit plate 13 so as to expose a photosensitive drum 12. The transparent glass member 15 is provided to be oblique to an optical path, and a photodetector (light quantity detection means) 16 receiving one part of the image light reflected by the member 15 is disposed in such an optical system. In the case where output from an amplifier circuit 17 receiving output from the photodetector 16 is equal to or above a value of reference voltage 19 for discriminating the negative or the positive, it is judged as positive film, and in the case that the output is equal to or above a fixed level, it is judged as negative film. The judged result is transmitted to a display part (display means) 20. By displaying the result judged to be negative or positive, miscopying is prevented and running cost is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording apparatus having a function of projecting image information on an information recording medium such as a microfilm on a screen and a function of guiding image light to a photosensitive drum or the like and recording it. In particular, the present invention relates to an information recording device capable of discriminating the polarity of a recorded image and recording according to the polarity.

[0002]

2. Description of the Related Art Conventionally, an apparatus of this type is shown in FIG. That is, in this reader printer 100, the light of the lamp 102 reflected by the reflecting mirror 101 is condensed by the condenser lens 103 to illuminate the microfilm 104, and the image light thereof is formed by the imaging lens 105 and the mirror 106. , 107 through the screen 10
8 and the information on the microfilm 104 is read.

On the other hand, when recording this information on recording paper or the like, the mirror 107 is tilted down to the state 107-b, and the image reading sensor 109 is scanned in the P ₁ direction to read the image light, and the image is read. Information is recorded on the microfilm 104 by sending a signal to the printer.

By the way, in this type of reader printer, as a method of automatically discriminating the so-called negative or positive of the microfilm which is the information recording medium, the image reading sensor 109 is previously set at the position of 109-1. Standby and perform prescan operation in the P ₂ direction before scanning during printing, and determine the negative or positive of the microfilm based on the read information, and according to that, reverse or non-invert the read image during scanning during printing. I was going.

[0005]

However, in such a conventional example, since the negative and positive are discriminated after the print key is pressed, the erroneous negative and positive are discriminated. However, it was printed out, which was a cause of so-called running cost increase.

The present invention has been made in order to solve the above problems, and its purpose is to prevent the mistaken copying due to an error of the negative and positive by always making the judgment of the negative and the positive visible to the user. The purpose is to

[0007]

In order to achieve the above object, the present invention provides information for displaying and recording image information by switching the optical path of image light obtained by illuminating an information recording medium. In the recording apparatus, a light amount detection unit that detects the light amount of the image light, a determination unit that determines the negative or positive polarity of the information recording medium based on the detection result of the light amount detection unit, and a determination result of the determination unit And a display means for displaying.

[0008]

According to the present invention having the above-mentioned structure, the light quantity detecting means for detecting the light quantity of the image light, the judging means for judging the negative or positive polarity of the information recording medium based on the detection result of the light quantity detecting means, By providing the display means for displaying the determination result of the determination means, the user can always see the determination of negative / positive of the information recording medium.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1A is a diagram showing the basic construction of a reader printer to which the present invention is applied. In the figure, a microfilm 1 as an information recording medium is illuminated by an illuminating means consisting of a lamp 2 as a light source, a spherical reflecting mirror 3 and a condenser lens 4, and the image light of the film 1 is projected above it at the time of a reader. It passes through the lens 5, is reflected by the plane mirrors 6 and 7 located further above, and is projected on the screen 8 as a display means. The mirrors 9 and 10 are fixedly supported on the lower surface of the support 11 in a relationship intersecting at a right angle.
Moves in the direction of arrow B ₁ together with 0 (back scan),
The mirror 9 advances while crossing the leader optical path. afterwards,
Move back in the direction of arrow B ₂ from the exposure start point.

At this time, the film 1 passed through the projection lens 5.
The image light is reflected by the plane mirrors 9 and 10, and is exposed on the photosensitive drum 12 through the slit 13a of the slit plate 13 provided immediately above the photosensitive drum 12 as an image carrier.

Around the photosensitive drum 12, in addition to a developing device (not shown), a known electrophotographic primary charger, a transfer charger and the like are provided. This photosensitive drum 12 rotates at a constant speed in the direction of arrow A during image exposure, and the mirrors 9, 1
0 moves at a speed half the peripheral speed of the photosensitive drum 12.

After the exposure, the support 11 returns to the initial position where it can be used as a reader and stops.

In such an optical system, the area where the mirror 10 intersects the optical path of the reader and the projection lens 5 during copying.
A transparent glass member 15 as a light amount detecting means is provided obliquely with respect to the optical path on the optical path between and, and the image light reflected by the glass member 15 is provided in the vicinity of the imaging lens 5. A light receiving element 16 is provided as a light amount detecting means for receiving a part of the light.

FIG. 1 (b) shows a control system for discriminating between negative and positive in this embodiment. In the figure, 16 is a light receiving element for detecting the light amount of the lamp 2, 17 is an amplifier circuit for amplifying the output of the light receiving element 16, 18 is an output for the amplifier circuit 17, and for discriminating between negative and positive. It is a comparator for comparing each reference voltage.

In this embodiment having the above construction,
First, the amount of light reflected by the transparent glass member 15 is detected by the light receiving element 16, and the output thereof is amplified by the amplifier circuit 17.
If the output of the amplifier circuit 17 is a certain level or more, that is, the value of the reference voltage 19 for judging negative or positive, it is judged as a positive film, and if it is a certain level or more, it is judged as a negative film. The result of this determination is sent to the display unit 20 as a display unit shown in FIG. 1C, and even the reader can know whether negative printing or positive printing is performed. This allows the user to know the error before printing even if the film is a film whose density is extremely thin or the subject is a photograph, and if the judgment of negative or positive is incorrect, the manual mode can be used. By switching to and printing, miscopying can be prevented.

The amplifier circuit 17, the N / P discrimination reference voltage 19, and the comparator 18 constitute discrimination means 30.

In the above embodiment, the transparent glass 15 is provided,
Although the light receiving element 16 is arranged to receive the surface reflected light, the half mirror 40 is arranged in the optical path above the imaging lens 5 as shown in FIG. The image light may be guided to the element 41, and the optical paths for display and recording may be formed via the mirror 42 provided near the half mirror 40.

[0019]

According to the present invention having the above-mentioned configuration and operation, the light quantity detecting means for detecting the light quantity of the image light and the negative or positive polarity of the information recording medium are discriminated based on the detection result of the light quantity detecting means. By providing the discriminating means and the display means for displaying the discriminating result of the discriminating means, it is possible to prevent the miscopy and reduce the running cost by showing the negative or positive discriminating result even at the time of the reader. Become.

[Brief description of drawings]

1A is a schematic configuration diagram of an information recording apparatus according to an embodiment of the present invention, FIG. 1B is a block diagram showing a control system for discriminating between negative and positive of the apparatus, and FIG. 1C is the apparatus. It is a top view of the display part used for.

FIG. 2 is a schematic configuration diagram of an information recording apparatus according to another embodiment of the present invention.

FIG. 3 is a schematic configuration diagram of a conventional information recording device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Micro film (information recording medium) 16 Light receiving element (light amount detection means) 30 Discrimination means 20 Display unit (display means)

Claims (1)

[Claims] 1. An information recording device for displaying and recording image information by switching an optical path of image light obtained by illuminating an information recording medium, comprising: a light amount detecting means for detecting a light amount of the image light; The negative of the information recording medium based on the detection result of the light amount detecting means,
An information recording apparatus comprising: a discriminating means for discriminating a positive polarity and a display means for displaying a discrimination result of the discriminating means.