JPS63227267A - Recording and reproducing device for copying machine - Google Patents

Abstract

PURPOSE:To eliminate the disadvantage and the inconvenience of the setting of an original at the time of copying, by providing a memory which stores a picture signal outputted from a photoelectric transducer at the time of recording an image, and supplies a stored picture signal to a driving circuit at the time of reproducing the image. CONSTITUTION:At the time of recording the image, light emitting element arrays 1 are lit in order with a constant voltage by the driving circuit, and the light of the element is projected on the original 2 passing through an optical system, and after reflected light is converted to an electrical picture signal by the photoelectric transducer 5, it is stored in the memory 9. When picture data stored in the memory 9 is reproduced, the picture signal is read out from the memory, and the light emitting arrays are lit in order by the driving circuit. Therefore, the light of the array is projected on a recording medium through a lens system, and is reproduced as the image by a reproducing means. In such a way, it is possible to realize the abbreviation of the setting of the original at the time of copying.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a recording/reproducing device for a copying machine having a storage means for a read image signal.

(Prior Art) A conventional copying machine is equipped with, for example, a transparent document table, a light source, an image reproducing device, etc. When copying onto recording paper,
A document is set on a document table, light from a light source is applied to the document, and the reflected light is directed onto a recording paper, and then an image is reproduced on the recording paper through a development process by an image reproducing device.

(Problems to be Solved by the Invention) However, in the copying machine having the above configuration, when copying an original, the original must be set on the original table, which is disadvantageous and inconvenient. In particular, when copying many types of originals again after a certain period of time, it is necessary to first find the originals to be copied and place them on the original table one by one, which causes a problem of extremely poor work efficiency. Rarely.

The present invention provides a recording/reproducing apparatus for a copying machine that solves the problem of the prior art, which is the inconvenience of setting originals during copying.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a recording system for a copying machine that reads and stores images to be copied, and reads and reproduces the stored image signals. A playback device includes at least a light emitting element array including a plurality of light emitting elements, a drive circuit that sequentially turns on each of the light emitting elements using a constant voltage or an image signal, and a light emitting element array that converts light from the light emitting element array into an original or a record. an optical system that irradiates the medium; a charging conversion element that converts the reflected light from the document into an image; a reproducing unit that reproduces the irradiated light onto the recording medium into an image; and an output from the photoelectric conversion element during image recording. and a memory that stores image signals to be displayed and supplies the stored image signals to the drive circuit during image reproduction.

(Function) According to the present invention, since the recording and reproducing device of a copying machine is configured as described above, when recording an image, the light emitting element array is sequentially turned on with a constant voltage by the drive circuit, and the light passes through the optical system. The original is irradiated with light, and the reflected light is converted into an electrical image signal by a charging conversion element and then stored in a memory.

When reproducing the image data stored in the memory, the image signal is read from the memory and the light emitting element array is sequentially turned on by the driving path (9). Then, this light is irradiated onto the recording medium through the lens system, and is reproduced as an image by the reproduction means. Thereby, it is possible to omit setting the original document at the time of copying. Therefore, the above-mentioned problem can be eliminated.

(Embodiment) FIGS. 1 (1) and (2) are schematic configuration diagrams of a recording and reproducing device in a copying machine according to an embodiment of the present invention.
) shows the state at the time of recording, and (2) in the same figure shows the state at the time of reproduction.

This recording/reproducing device includes a main scanning section that separates an image on a document into the main scanning direction X during recording, and forms a recorded image on recording paper from electrical signals representing pixels during playback; Alternatively, it is composed of a sub-scanning section that sends the recording paper in a sub-scanning direction Y that is perpendicular to the main scanning direction X.

The main scanning section includes a light emitting element array consisting of a plurality of light emitting elements;
For example, N light emitting diodes (hereinafter referred to as LEI)
It has an LED array 1 consisting of 1a1 to 1aN, and its L
An optical system, for example a lens 4, is provided in the optical path of the ED array 1 to irradiate the light from the LED array 1 onto the original 2 or a photosensitive recording paper 3, which is the recording medium 3. A photoelectric conversion element 5 for converting light into an electrical image signal S1 is provided in the reflected optical path. A control circuit 6 that supplies a control signal SC for driving and controlling the LED array 1 is connected to the LED array 1, and the control circuit 6 is connected to an analog/digital converter (hereinafter referred to as an A/D converter) 7 and a digital/digital converter 7. Analog converter (hereinafter referred to as 0
/A converter) 8, and memory 9.

The control circuit 6 has the function of controlling the operations of the A/D converter 7 and the D/A converter 8, as well as controlling writing and reading of the memory 9. A/D converter 7 is photoelectric conversion element 5
A circuit that converts the analog image signal S1 output from the converter into a digital signal and supplies it to the memory 9.
This is a circuit that stores the output of the converter 7. Further, the D/A converter 8 outputs a constant voltage ■o under the control of the control circuit 6, or converts the digital image signal read from the memory 9 into an analog image @S2, and outputs the constant voltage This is a circuit that supplies vo or image signal S2 to the LED array 1 side.

The sub-scanning section has drums 10 and 11 that send the original 2 or the recording paper 3 in the sub-scanning direction, and roughly in the sub-scanning direction Y of the drum 10 and 11 is an image reproducing device (not shown) for performing a developing process. is provided.

FIG. 2 is a diagram showing an example of the configuration of a drive circuit for driving the LE[) array 1 of FIG. 1. This drive circuit is an LED
a switch control circuit 20 that is provided in the array 1, receives the control signal Sc output from the control circuit 6 of FIG. 1, and sequentially outputs the switch control signals 301 to SON;
The constant voltage vo or image signal S2 output from the 0/A converter 8 in FIG.
It is composed of switches 21-1 to 21-N.

The operation of the recording/reproducing apparatus configured as above will be explained.

When recording a document, the control signal Sc is output from the control circuit 6 and supplied to the switch control circuit 20, as shown in FIG. 1(1) and FIG. Constant voltage V from D/A converter 8. is output and supplied to the switches 21-1 to 21-N. The switch control circuit 20 sequentially outputs switch control signals 501 to SDN in accordance with the control signal SC, and uses the signals to sequentially turn on the switches 21-1 to 21-N. For example, when the switch 21-5 is turned on by the switch control signal SO5, a constant voltage σ is applied to the LED 1a5 in the LED array 1 through the switch 21-5.
The LED 1a5 lights up. In this way LED1
When a1 to 18N light up sequentially, the light enters lens 4.
Main scanning direction X on the original fi2 image set through
are irradiated sequentially. The reflected light from the original 2 is converted into an image @S1 by the photoelectric conversion element 5, and the image @S1 is converted into an image @S1.
After being converted into a digital signal by the D converter 7, the memory 9
is memorized.

When playing back the stored image data, as shown in Fig. 1 (2)
) and as shown in FIG. 2, the control signal Sc output from the control circuit 6 is supplied to the switch control circuit 20, and the digital image signal stored from the memory 9 under the control of the control circuit 6 is is read out. The read image signal is converted into an analog image @S by the D/A converter 8.
2 and then supplied to the switches 21-1 to 21-N. The switch control circuit 20 sequentially outputs the switch control signals SD1 to S open in accordance with the control signal Se, and the switches 21-1 to 21-N are sequentially turned on by the signals, and the LEDs 1a1 to 18N undergo brightness modulation in accordance with the image signal S2. be done. This light is irradiated onto the set recording paper 3 through the lens 4, and then the stored image data in the memory 9 is reproduced onto the recording paper 3 through a development process by an image reproducing device (not shown).

This embodiment has the following advantages.

(i) LEI) Since the array 1 is used for both recording scanning and reproduction scanning, power saving and integration can be easily achieved, and the device can also be made smaller and lighter.

(ii) Since it has a memory 9 that electrically stores the image signal S1, once the original 2 is recorded, the original 2
Copies can be made even if the is removed from the copying machine. Therefore, the disadvantage and inconvenience of having to set the original document 2 one by one as in the conventional method can be eliminated.

Note that the present invention is not limited to the illustrated embodiment, and various modifications are possible. Examples of such modifications include the following.

(a) The light emitting element array may be composed of a semiconductor laser array or the like in addition to the LE[) array.

(b) The constant voltage vo supplied to the switches 21-1 to 21-N in the drive circuit may be obtained from a circuit portion other than the 0/A converter 8. In addition, the switch control circuit 20
The drive circuit constituted by the switches 21-1 to 21-N may be constituted by a gate circuit or the like, or may be provided as an individual component separate from the light emitting element array.

(C) As an image reproduction means, instead of applying light whose brightness has been modulated by a light emitting element array to the photosensitive recording paper 3 that is a recording medium, it applies it to another recording medium such as a photosensitive drum, and uses an electrophotographic process etc. , the transmitted image may be transferred to conductive paper or the like.

(Effects of the Invention) As described in detail above, according to the present invention, a memory for electrically storing image signals is provided, so that once an original is recorded, the original can be removed from the copying machine body. This also makes it possible to copy documents, thereby eliminating the disadvantages and inconveniences of setting originals.

[Brief explanation of the drawing]

FIGS. 1(1) and 1(2) are schematic configuration diagrams of a recording and reproducing device of a copying machine according to an embodiment of the present invention, in which (1) shows the state during recording, and (2) shows the state during reproduction. FIG. 2 is a diagram showing an example of the configuration of the LED array drive circuit in FIG. 1. 1...LED array, 1a1 to 1aN...
...LED 12...Document, 3...Recording paper, 4...Lens, 5...Photoelectric conversion element, 6...Control Circuit, 7... ^/D
Converter, 8...D/A converter, 9...
Memory, 20...Switch control circuit, 21-1
~21-N...Switch, 31.32...
...Picture signal, Sc...Control signal, vo...
...Constant voltage. Applicant's representative: Sei1 Kakimoto: LED
Array diagram 1

Claims (4)

[Claims] 1. a light emitting element array made up of a plurality of light emitting elements; a drive circuit that sequentially turns on each of the light emitting elements using a constant voltage or an image signal; an optical system that irradiates a document or a recording medium with light from the light emitting element array; a photoelectric conversion element that converts reflected light from a document into an image signal; a reproducing unit that reproduces the light irradiated onto the recording medium into an image; and a photoelectric conversion element that stores the image signal output from the photoelectric conversion element during image recording; A recording/reproducing apparatus for a copying machine, further comprising: a memory for supplying a stored image signal to the drive circuit during image reproduction. 2. 2. A recording and reproducing apparatus for a copying machine according to claim 1, wherein said memory stores and reads out said image signal in the form of a digital signal. 3. 2. A recording/reproducing apparatus for a copying machine according to claim 1, wherein said recording medium is recording paper. 4. 2. A recording/reproducing apparatus for a copying machine according to claim 1, wherein said recording medium is a photosensitive drum.