JPS6243667A - Analog editing and copying machine - Google Patents

Abstract

PURPOSE:To maintain a composite copying function with a small-sized constitution by providing the 1st optical exposure system which forms the image of an original on a photosensitive body and the 2nd optical exposure system which reads the image of the original so that a scanning part is shared, and making the scanning speed of a scanning part different when the optical systems are used selectively. CONSTITUTION:The 1st optical exposure system 4 is provided which lights the original 1 for exposure and forms its image on the photosensitive body 3, and the optical system 4 consists of a lamp 5 for lighting the original 1, mirrors 6-8 which reflect light from a lamp 5 for lighting the original 1 and the original to form the image on the photosensitive body 4, an image forming lens 9, and a mirror 10. Here, the lamp 5 and mirrors 6-8 constitute a scanning part 11, which scan the surface of the original 1. Further, a CCD 22 is provided and the 2nd optical exposure system 23 is provided which forms the image of the original 1 on the CCD 22. The optical system 23 uses the scanning part 11 and consists of a mirror 24 which receives reflected light from the mirror 8, an image forming lens 25, and the CCD 22. When the optical system 23 is used, the scanning speed of the scanning part 11 is slowed down and the composite copying function is maintained with the small-sized constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to an analog editing and copying apparatus capable of compositely copying images of necessary portions of one or more original documents.

BACKGROUND TECHNOLOGY Conventionally, an analog copying machine equipped with a CCD in order to have an image editing function was published in Japanese Patent Laid-Open No. 59-18.
It is known from Publication No. 942 and the like. However, in this method, since the entire surface of the document is read by the surface CCD, the entire surface of the document cannot be read unless there is a distance from the document to the surface CCD, which results in a large copying apparatus. Furthermore, an illumination device for illuminating the entire surface of the document is also required, which is complicated and increases cost.

On the other hand, it is also possible to install a CCD or the like so that it also serves as a part of the exposure optical system of a normal analog copying machine, but the scanning speed of such an exposure optical system is such that the photoelectric conversion element such as the CCD cannot convert the original image. Usually, the frequency exceeds the allowable frequency to be read. For this reason, the exposure optical system is simply incorporated into a low-speed copying machine in which the scanning speed of the exposure optical system is slower than the allowable driving clock of the CCD. After all, in a typical analog copying machine, a composite copy is simply obtained by cutting, pasting, and resetting the original and performing a copying operation.

Purpose The present invention has been made in view of the above points, and an object of the present invention is to obtain an analog editing copying device that can perform reading with a photoelectric conversion element while also serving as an exposure optical system even in a high-speed analog copying device. .

Structure In order to achieve the above object, the present invention has a document holder that forms at least one image of a document placed on a stand on a photoreceptor.
A first exposure optical system including two lenses and a second exposure optical system including a photoelectric conversion element for photoelectrically converting and reading an image of a document are provided so that the scanning section thereof also serves as the first exposure optical system and the second exposure optical system.
The present invention is characterized in that a speed control means is provided to vary the scanning speed of the scanning section when used selectively with the exposure optical system, and to cause the scanning to be performed within the permissible clock of the photoelectric conversion element when the second exposure optical system is selected. .

Hereinafter, one embodiment of the present invention will be described based on the drawings. First, the configuration of the copying apparatus of this embodiment will be explained with reference to FIG. A document placement table 2 on which a document 1 is placed is provided at the top of the copying machine main body. A first exposure optical system 4 is provided that exposes and illuminates the original 1 to form an image on the photoreceptor 3. This first fl light optical system 4 includes a lamp 5 that illuminates the original 1, first to third mirrors 6, 7, 8 that image the reflected light from the original 1 on the photoreceptor 4, an imaging lens 9, and a fourth
It is composed of a mirror 10. Here, lamp 5
．． The first to third mirrors 6, 7, and 8 are used as a scanning unit 11, which exposes and scans one side of the original (more specifically, the lamp 5 and the first mirror 6 are used as a first scanner, and the 2,
3 mirror 7.8 is used as a second scanner, and this second scanner is set to move in the same direction at 1/2 the speed of the first scanner), and the photoreceptor 3
According to the copying process, a charger 12,
An eraser 13, a developing device 14, a transfer charger 151, a separation charger 16, a cleaning device 17, and the like are arranged. As a result, a reflected light image from the original 1 is formed on the photoreceptor 3 by scanning by the first exposure optical system 4, and an electrostatic latent image is formed.

This latent image is visualized by the developing device 14 and transferred to the transfer paper 18 by the action of the transfer charger 15. After the transfer paper 18 is separated from the photoreceptor 3, the fixing device l\1
The image is fixed by the action of 9, and the paper is ejected onto a paper ejection tray 21 by a paper ejection roller 20.

Such a copying operation is normal for an analog copying machine and is performed at high speed.

However, in such an analog copying machine.

A CCD 22 as a photoelectric conversion element is provided inside the main body. A second exposure optical system 23 is provided to form an image of the document 1 on the document table 2 onto the C0D 22. This second exposure optical system 23 also serves as the scanning section 11 in the first exposure optical system 4, and the third mirror 8
Fifth mirror 24 and imaging lens 25 to receive the reflected light
and a CCD 22. As a result, the document 1 is exposed and scanned by the scanning unit 11, and the reflected light image from the document 1 is formed on the C0D22, so that the predetermined number of the image is changed to C0D22.
The data is converted into an electrical signal by the 0D 22, and the data read by the CCD 22 is stored in the memory 26. and,
The original image is stored in the memory 26 and displayed on the display section 27 based on the electrical signal. Image editing copying is executed by specifying the region to be reproduced in the image and the position at the time of composition based on the original image displayed on the display section 27 by operating an operation section (not shown). .

Here, when selecting the 5th FF light optical system 4, the scanning unit 1
The scanning speed of 1 is the same as the linear speed of the photoreceptor 3 at the same magnification,
It's fast. Therefore, if the scanning section 11 is scanned at the above-mentioned scanning speed when selecting the second exposure optical system 23, the CC
Therefore, when using the second exposure optical system 23, it is necessary to scan at a scanning speed within the allowable clock of the CCD 22 which reads the image.

Therefore, in this embodiment, the scanning speed of the scanning section 11 is made different between when the first It light optical system 4 is used and when the second exposure optical system 23 is used. The configuration for this purpose is shown in FIG. 1. First, a photoconductor synchronization clock generation section 28 is provided which generates a clock in synchronization with the photoconductor 3. The clock from the photoconductor synchronization clock generator 28 is input as a timing clock signal to a copying process control circuit 29 that controls charging, transfer, static elimination, development, paper feeding, conveyance, fixing, jam detection, etc. The clock signal is input to the scanning section scanning control circuit 31 via the flip-flop 30 or directly as a clock signal for causing the scanning section 11 to scan. This D flip-flop 30 is for the second FF light optical system 23, and when the first exposure optical system 4 is selected, this []
The flip-flop 30 is passed and the second optical optical system 23
A selection switch 32 is provided for intervening this D flip-flop 30 at the time of selection. Therefore, in this selection switch 32, the switching terminal T2 is used for the first exposure optical system 4, and the switching terminal T2 is used for the second exposure optical system 23. As a result, when selecting the second exposure optical system 23,
A clock synchronized with the photoreceptor 3 is connected to a D flip-flop 30.
By dividing the frequency by and inputting it to the clock terminal of the scanning section scanning control circuit 31, the scanning section 11 is caused to scan at a speed that is half the scanning speed of the scanning section 11 when the first exposure optical system 4 is used. The original image can be read in a state that satisfies the allowable clock of the CCD 22.

Here, the document image reading operation when the second exposure optical system 23 is used will be further explained with reference to FIG. 3. First, the address of the memory 26 is set by counting the drive clock of the CCD 22. More specifically, the memory address counter 33 is reset to address 0 by the copy star 1- signal. When the scanning position of the scanning unit 11 reaches the leading edge of the original 1 and the leading edge of the original is detected, an oscillator 3 for driving the CCD is activated via an AND gate 34.
The clock from 5 becomes effective, and the memory address counter 33, the CCD counter multiplexer 36, and the reset pulse generation circuit 37 are operated manually. As a result, the memory address counter 33 is set, and
A video signal from the CCD 22 is passed through a video amplifier 38, converted into a digital signal by an A/D converter 39, and input into the memory 26. Then, the memory address counter 33 counts up, that is, the CC up to the rear end of the original 1.
When the video signal read by D22 is input to the memory 26, the clock signal from the oscillator 35 is inhibited, the memory address counter 33 and the CCD counter multiplexer 3G are also stopped, and the video signal from the CCD 22 is input to the memory 26. It disappears. When inputting a new original image, it can be input to the memory 26 in the same manner as described above. Note that when using such a second exposure optical system 23, charging, transfer, static elimination,
Process control such as development, paper feeding, and conveyance control are not performed.

In this embodiment, a D flip-flop 30 is used as the speed control means, and under selection by the selection switch 32,
When using the second fi light optical system 23, the clock synchronized with the photoconductor is frequency-divided, but when a servo motor is used as the motor for driving the scanning section 11, the clock synchronized with the photoconductor is frequency-divided. Alternatively, the scanning speed of the scanning section 11 may be slowed down by inputting the signal as is without changing the output direction of the F/V converter (frequency/voltage converter). Furthermore, when a pulse motor is used as the drive motor for the scanning section 11, the scanning speed of the scanning section 11 may be slowed down by changing the pulse interval.

Effects As described above, the present invention provides a first exposure optical system for forming an image on a photoreceptor and a second fi optical system for forming an image on a photoelectric conversion element, which share a scanning section, and The scanning speed of the scanning unit is made different and slower when using the second exposure optical system than when using the second exposure optical system, so that reading by the photoelectric conversion element can also be performed using the same scanning unit in a high-speed analog copying machine. Therefore, it can be made inexpensive, small, and provided with a composite copying function.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is a block diagram, FIG. 2 is a side view schematically showing a copying apparatus, and FIG. 3 is a block diagram.

Claims (1)

[Claims] A first exposure optical system including at least one lens that forms an image of the original placed on the original placing table on a photoreceptor; and a second exposure optical system that includes a photoelectric conversion element that photoelectrically converts and reads the image of the original.
An exposure optical system is provided so that its scanning section also serves as the first exposure optical system.
A speed control means is provided to vary the scanning speed of the scanning section when the exposure optical system and the second exposure optical system are selectively used, and to make the scanning within the permissible clock of the photoelectric conversion element when the second exposure optical system is selected. Features: Analog editing and copying equipment.