JPH0754413B2 - Image forming device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention "Industrial field of application" The present invention is used as an image forming apparatus such as a copying machine and an output terminal device, and more specifically has an electrophotographic process. Further, the present invention relates to a copying machine and an output terminal device provided with a laser light source, a lens system for reflecting and forming a laser light, a motor scanner and the like.

"Problems to be solved by the conventional technology and invention" Most of the conventional devices that have an electrophotographic process and a laser light source have a function of copying only by the function of an output terminal (printer) and output from a printer. If multiple copies of the required documents are required, there is no choice but to copy them with another copying machine, which is a troublesome and time-consuming problem.

Furthermore, when it is attempted to combine the function of a printer with the laser light and the function of a copying machine, when the copying machine function is being used, the laser light may accidentally enter the photoconductor or use the printer function. During the operation, the reflected light from the platen may be erroneously incident on the photoconductor and disturb the image on the photoconductor.

[Structure of Invention]

"Means for Solving Problems" The present invention irradiates a document placed on a document table with light, and forms reflected light reflected from the document table on a photoconductor through a short-focus image forming element array. An image forming apparatus comprising: an image forming unit; and a second image forming unit that reflects a laser beam modulated based on an image signal with a reflecting mirror to form an image on the photoconductor. And the reflecting mirror are integrally provided, and when image formation is performed by the first image forming unit,
The light passing through the short focus imaging element array is allowed to enter the photoconductor, and the laser beam reflected from the reflecting mirror is movable to a position that prevents the laser light from entering the photoconductor. When the image is formed by the second image forming means, the light passing through the short focus image forming element array is blocked from entering the photoconductor and the laser beam reflected from the reflecting mirror is entered into the photoconductor. The image forming apparatus is characterized in that an integral body of the short focus image forming element array and the reflecting mirror is rotatably provided so as to be movable to a position that allows the movement.

[Examples] Examples of the present invention will be described below with reference to the drawings. FIG. 1 shows a vertical sectional view. In the figure, 1 is rotatable about an axis parallel to the photosensitive drum 7, and can take two positions, an oblique position shown by a solid line and a vertical position shown by a dotted line, and its side surface is a reflecting mirror surface. A reflection mirror integrated lens having a condensing function at a position in the normal direction toward the photosensitive drum 7, 2-1 and 2-2 are laser light reflection mirrors, and 3 is a laser light shielding shutter, which are solid line positions and dotted line positions. Take Reference numeral 4 is an imaging lens, and 5 is a scanning motor, and a polyhedral mirror 6 is fixed to the vertical output shaft end. Reference numeral 7 denotes a photosensitive drum having a photosensitive layer on the outer circumference of the cylinder, and around the periphery thereof, there are arranged a device for performing an electrophotographic process such as a charger 7a, the lens 1, a developing device 7b, a transfer device 7c, and a cleaner 7d. Reference numeral 8 is a halogen lamp when used as a copying machine, 9 is a reflecting plate for the halogen lamp 8, 10 is a document table, and 11 is a document holding plate. (The laser light source section is omitted in the figure.) 14 is a member necessary for the laser recording (not shown laser light source, scanner motor 5, scanning mirror 6, imaging lens 4, shutter 3, laser light reflection mirror). (2-1, etc. Optical system) A cassette box equipped with a document holding plate for a copying machine
Detachable to 11. Reference numeral 15 denotes a shutter that can slide with the original pressing plate 11, and a window 11-1 provided on the original pressing plate 11,
Also, the glass of the document table 10 is in an open state when the laser light passes through. Reference numeral 16 is a fixing member for fixing the cassette box 14 to the document pressing plate 11.

FIG. 2 is a perspective view of the reflection mirror-integrated lens 1-
Reference numeral 1 denotes a lens portion having a light condensing function such as an array of short-focus image forming elements, and 1-2 a mirror portion for reflecting laser light, in which the lens and the mirror are integrated.

Regarding the rotation of the reflection mirror integrated lens 1 In this embodiment, as shown in FIG. 3, the reflection mirror integrated lens 1 is rotated.
Support members 1-3 each having a cylindrical outer periphery and having a cross section cut in parallel with each other are provided at both ends of the support member 1. The support members 1-3 are attached to a bearing 12 fixedly attached to the main body of the copying machine. The lens 1 with a built-in reflection mirror is fitted and is rotatable. When the arrow of the dial 19 fixed to the end of the reflection mirror integrated lens 1 is at the position A, it acts as a condenser lens to prevent the laser light from entering the photoconductor. , B, it functions as a reflecting mirror, and blocks the light passing through the short focus imaging element array from entering the photoconductor. The stopper 13 is composed of a magnet, and at a position where the lens supporting member 1-3 having a reflection and condensing function is at the arrow A of the dial 19, the stopper surface 13-1 is in contact with the dial 13 and the arrow of the dial 19 is B. In the position at, it contacts the stopper surface 13-2. Stopper 13
The surface of the support member 1-3 that is in contact with is made of a magnetic material and is fixed by magnetic force at the positions A and B. A or B
Rotate the dial 19 so that the arrow is aligned with the position of the dial manually or when the cassette box 14 is installed.
The reflection mirror integrated lens 1 having the reflection and condensing functions is rotated so that the arrow 19 is located at the position B, and when the cassette box 14 is removed, the arrow on the dial 19 is located at the position A. The lens 1 may be automated so that it rotates (not shown).

When used as a copying machine in FIG. 1, the cassette box 14 equipped with the members necessary for laser recording is removed from the original holding plate 11, and the original holding plate 11 is lifted to place the original on the original table 10 and the original holding plate 11 is used. suppress. At this time, the slidable shutter 15 is closed. Therefore, the manuscript table 10 can be used without being disturbed by the cassette box 14, and not only sheet-shaped manuscripts but also thick ones and books can be copied.

At the time of copying, the reflection mirror integrated lens 1 having a rotatable reflection and condensing function is manually or automatically detected as the cassette box 14 is detached and stands upright as shown by the dotted line in FIG. Operates as a mobile type. The light from the halogen lamp 8 is reflected on the original as shown by the arrow and is guided to the photoconductor drum 7 through the lens portion 1-1 of the reflection mirror integrated lens 1 having a rotatable reflection and condensing function. Get burned. The original light guided to the photosensitive drum 7 rotating in the direction of the arrow in the figure in synchronization with the movement of the original table 10 forms a latent image on the photosensitive member previously charged by the charger 7a, and then is developed by the developing device 7b. Is visualized and transferred to the transfer material fed from the paper feeding device 17 in the transfer device 7c, separated after transfer and sent to the fixing device 18 and discharged, during which the visible image after transfer is transferred. It is a well-known function that the body 7 is cleaned of the residual toner by the cleaner 7d to prepare for the next copying.

When used as a printer, the reflection mirror integrated lens 1 having reflection and condensing functions is in a rotated position as shown by the solid line in FIG. Laser light modulated by image information and sent from a laser light source (not shown) is reflected by the scanning mirror 6 and travels through the imaging lens 4. The laser light shielding shutter 3 is opened like the solid line,
Further, the laser light reflection mirror 2-1, the window 11-1 of the shutter 15 and the reflection mirror 2-2 pass through the reflection mirror integrated lens 1 having a reflection and light collecting function.
It is reflected at -2 and guided to the photosensitive drum 7. Even when used as a printer, the latent image formed on the photosensitive drum 7 is subjected to the processes of development, transfer, and fixing to form a clear image, and the toner left on the photosensitive drum 7 is cleaned by the cleaner 7d.

In the embodiment, the cassette box is placed at the right end of the copying machine, but the position of the cassette box is not limited.

〔The invention's effect〕

First image forming means for irradiating a document placed on the document table with light and for forming an image of the reflected light reflected from the document table on the photoconductor through the short-focus image forming element array, and modulated based on the image signal. An image forming apparatus having a second image forming unit that reflects a laser beam by a reflecting mirror to form an image on the photoconductor,
The short focus imaging element array and the reflecting mirror are integrally provided,
When the image is formed by the first image forming means, the light passing through the short focus image forming element array is allowed to enter the photoconductor and the laser light reflected from the reflecting mirror is transmitted to the photoconductor. It is movable to a position where it is prevented from entering, and when the image is formed by the second image forming means, it prevents light passing through the short focus image forming element array from entering the photoconductor and An integral unit of the short focus image forming element array and the reflecting mirror is rotatably provided so that the laser beam reflected from the reflecting mirror can be moved to a position that allows the laser beam to enter the photoconductor. Therefore, it is possible to prevent the light from the other image forming unit from being accidentally incident on the photosensitive member and disturbing the image on the photosensitive member when the image is formed by one image forming unit. There is.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, FIG. 2 is a perspective view of a reflection mirror integrated lens having reflection and condensing functions, and FIG.
FIG. 4 is a perspective view showing a supporting device of a lens having reflection and condensing functions, and FIG. 4 is a front view of FIG. 1 ... Lens, 1-1 ... Lens part, 1-2 ... Mirror part.

Claims (1)

[Claims] 1. A first image forming means for irradiating a document placed on a document table with light, and forming reflected light reflected from the document table on a photoconductor through an array of short-focus image forming elements, and an image signal. An image forming apparatus comprising: a second image forming unit that reflects a laser beam modulated on the basis of a reflecting mirror to form an image on the photosensitive member. The short focus image forming element array and the reflecting mirror are integrally provided. ,
When the image is formed by the first image forming means, the light passing through the short focus image forming element array is allowed to enter the photoconductor and the laser light reflected from the reflecting mirror is transmitted to the photoconductor. It is movable to a position where it is prevented from entering, and when the image is formed by the second image forming means, it prevents light passing through the short focus image forming element array from entering the photoconductor and An integral unit of the short focus image forming element array and the reflecting mirror is rotatably provided so that the laser beam reflected from the reflecting mirror can be moved to a position that allows the laser beam to enter the photoconductor. An image forming apparatus characterized by.