JPS6261078A - Copying and reading device for picture - Google Patents

Abstract

PURPOSE:To alternately put two cartridges into an electrostatic transfer device and to easily and inexpensively obtain a device acting as transfer and reader through the use of an optical system scan system in common by making an electrophotographic member including a photosensitive body and a picture reading member into cartridge systems. CONSTITUTION:The picture reading cartridge 14, which can be loaded instead of the transfer cartridge 12, is produced so as to use a putting-in and putting-out guide member positioning means and a putting-in and putting-out guide member holding means having the constitution the same as the transfer cartridge 12, and includes an one-dimensional line sensor (image pickup element) 15, and a drive circuit substrate 15 used for said sensor. If necessary, the cartridge 14 is equipped with a signal processing circuit substrate 17. An electrically connecting part in a type different from the transfer cartridge 12 is necessary. The connector of a power source and a signal output and a connector corresponding to the transfer device main body side are provided. Moreover a means detecting that the picture reading cartridge 14 is inserted is provided, and a transfer action and a picture reading action are switched.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention [Field of Industrial Application] The present invention relates to an apparatus for copying and reading an image using a common image scanning means.

[Conventional technology]

Conventionally, copying devices and image reading devices have been designed to provide illumination and
Although imaging, scanning, etc. are common, they are generally configured separately.

[Problem that the invention seeks to solve]

Therefore, there is a belief that a copying device is not necessary if there is a 0-image reading-f stage and a printer, which is often a waste in terms of space and cost, especially when it is used infrequently. Apart from printers with a high density, if the pixel density of a general printer is used for copying, the image quality will be poor, and an analog type copying bag δ will be required in addition to the image reading means and printer.

There is also the idea of a device that can do both copying and image reading.
Most of them require a means for switching the optical system, which takes up space, and it may be difficult to apply them without significantly changing the basic configuration of existing copying machines, especially when targeting small copying machines. many.

In view of the problems mentioned above, the present invention realizes an apparatus capable of copying and reading images by commonly using an optical system and a scanning F stage.

Structure of the Invention Means for Solving Problem C] The present invention provides a copying apparatus in which a copying cartridge including an electrophotographic photoreceptor is removably attachable. An image reading cartridge is constructed that is replaceable and includes an image sensor at a position corresponding to the image exposure position on the photoreceptor, and the optical system and
This is a dual-purpose device that can copy and read images using the same scanning means.

[For production]

The electrophotographic member including the photoreceptor and the image reading member are both cartridge-type, and the two cartridges can be exchanged in the electrostatic copying device, and the optical system and scanning means are commonly used. A dual-purpose machine can be obtained easily and inexpensively.

〔Example〕

FIG. 1 is a schematic diagram showing an example of a copying apparatus to which the present invention is applied. The document table 2 is illuminated by an illumination lamp 4 while moving at the same speed as the circumferential speed of the photoconductor l, and an image of the document (not shown) on the document table 2 is projected onto the photoconductor 1 through a slit. exposed to light. A charging device 5, a developing device 6, a transfer device 7, a separating device 8, a cleaning device 9, etc. are arranged around the photoreceptor l, and an image is formed on the transfer paper fed by the paper feeder lO, and then the image is formed by the fixing device 21tt. The image is fixed and copied.

In the apparatus described above, the portion including the photoreceptor l surrounded by the broken line can be easily attached and detached as a copying cartridge 12. This makes it easy to change the color of copies and replace consumables. The mechanism for this basically consists of a guide member 13 for loading and unloading, a positioning means using pins after insertion, a connecting part for mechanical drives such as a holding means and a photoconductor drive, and a high voltage supply to a charging device. A shutter mechanism is provided in the 0 image exposure section and the transfer section consisting of the electrical connection section,
The photoreceptor is protected by opening it when it is installed in the copying machine and closing it when it is removed from the copying machine.

Since the configurations of the above-mentioned parts are conventionally known, detailed explanations will be omitted.

FIG. 2 shows an image reading cartridge 14 that can be installed interchangeably with the copying cartridge 12 shown in FIG.
It is made to use the same guide member, positioning means, and holding means for loading and unloading as in 2, and has a -dimensional line sensor (imaging device) 15, a drive circuit board 15 for it, and a board 17 for a signal processing circuit if necessary. . The electrical connection part needs to be separate from the copying cartridge 12, and is provided with a connector for outputting power and signals, and a corresponding connector is also provided on the main body of the copying apparatus.

Further, a means for detecting insertion of the image reading cartridge 14 is provided to switch between copying operation and image reading operation. When using the image reading cartridge 14, it is only necessary to move the illumination lamp 4 and document table 2, and there is no need to operate means such as transporting and fixing a single sheet. , may be activated at the same time.

The long one-dimensional line sensor 15 uses a photoconductive material such as one made of crystals in silicon and a photoconductive material such as amorphous silicon or cadmium selenide sulfide. CVD method)
Thin film line sensors made by the methods described above are known.

In the case of copying machines, image exposure is performed with a slit width of several millimeters, but in the case of image reading, only the light irradiated to the width of one pixel on the photosensitive area can be used, which greatly reduces the amount of light that can be used. It will be disadvantageous. For this reason, thin film line sensors may not be usable under the same conditions as copying machines in terms of sensitivity and response speed. One way to use such a line sensor is to make the reading speed slower than the copying machine. In the case of a low-speed machine in which the circumferential speed of the photoreceptor 1 is 50 to 10 h/sec, many thin film line sensors can be used by setting the drum circumferential speed and document scanning speed to 1/2 to 115.

C. Effects of the invention By making the portion of the copying device including the photoreceptor into a cartridge for easy installation and removal, and by using a cartridge with the same fitting part as the above-mentioned copying cartridge as the element for reading images, the copying device can be used. With the same configuration, image reading is possible, and a dual-purpose device is realized that is easy to operate without fear of damage.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a copying apparatus used in the present invention, and FIG. 2 is a schematic diagram of an image reading member cartridge. ■...Photoconductor, 2...Document mounting table, 15...-dimensional line sensor, 12...Copying cartridge, 1
4... Cartridge for image reading.

Claims (1)

[Claims] (1) In a copying apparatus in which a copying cartridge including an electrophotographic photoreceptor is detachable, the copying cartridge is replaceable in a fitting holding portion of the copying cartridge, and corresponds to the image exposure position on the photoreceptor. This is a dual-purpose device that consists of an image reading cartridge equipped with an image sensor at the position, and can copy and read images using a common optical system and scanning means.