JPS61116341A - Copying machine - Google Patents

Abstract

PURPOSE:To utilize efficiently copying machine by providing the copying machine with a function for forming an image on the outside of a case covering an original platen on the surface of the original platen and projecting an original on the original platen to a screen. CONSTITUTION:The case 5 covers the original platen 3 of the copying machine and a lens 7 is mounted on an opening part of the case 5. An image on the outside of the case 5 is formed on the surface of the original platen 3 through a lens 7 and reflectors 8, 9. When the case 5 is mounted, a magnetic switch 10 is turned on, and at the copying operation, lighting of an exposure lamp is inhibited. When a projection lamp 14 is turned on and an original is inserted from an original insersion port 15 to the surface of the original platen 3, the image of the original can be projected on the screen.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a copying machine, and more particularly to a copying machine that can copy documents not placed on a document table and also has the function of a projector.

<Background of the Invention> Conventional copying machines generally use a method in which a document is set on a document table, a document cover is placed on the document, and a copy button is pressed to make a copy. However, with this method, it is extremely difficult to copy originals whose surfaces are not flat, or to copy large and heavy originals. In addition, in order to reduce a very large original to a large proportion and fit it onto a single sheet of paper (about A3.84), first divide the original into smaller copies, and then reduce the copied paper again as the original. Nowadays, as copying machines, which used to require repeated copying operations, have become smaller and easier to move, and highly sensitive photoreceptors have been developed, improvements to the above-mentioned drawbacks have been expected.

<Purpose of the Invention> In view of the above-mentioned current situation, the present invention is capable of copying a document without carrying it to the document table of a copying machine, reducing a very large document by a large ratio at one time, and utilizing this mechanism. The purpose of the present invention is to provide a copying machine that also has the functions of a projector.

<Structure and Effects of the Invention> The present invention is a device that is removably mounted on a document table, and includes a case that covers the document table, and a device that is attached to an opening of the case and that transmits an image outside the case onto the document table. a first optical system that forms an image on the document table; a means for prohibiting the lighting of the exposure lamp when performing a copying operation when this device is attached; a projection lamp that illuminates the document table; The present invention is characterized by having an image copying and projecting device including a second optical system for transmitting and projecting an image of a document set in an erect state onto a screen installed outside the device.

With the above configuration, the present invention has the effect of being able to copy characters on a blackboard or whiteboard that cannot be placed on a manuscript table, and also being able to copy the surface of an object that is not flat. The size can be reduced to an arbitrary ratio by adjusting the distance between the object to be copied and the copying machine or the focal length of the optical system. In addition, if you use a projection lamp and a second optical system, it can also be used as a projector, so if you use it for meetings, etc., you can use the projection function to proceed with the proceedings and display the discussion results recorded on a whiteboard etc. You can use the copying function to efficiently make copies, use a computer, and keep track of the progress of the proceedings. Since the projection device shares many parts with the image copying device, it also saves cost and space compared to installing these devices separately.

<Embodiment> FIG. 2 is a structural diagram of main parts of a copying machine body used in an embodiment of the present invention. This copying machine main body is a copying machine with a moving optical system. An optical system 4 including an exposure lamp 4a moves from left to right in this figure to scan the original or image on the original platen 3 and expose the photosensitive drum 12.

FIG. 1 is a structural diagram of the main parts of the image copying and projecting apparatus used in the above embodiment. The copying machine main body 1 has grooves 1a and 1b provided in front and behind the document table 3, in which the image copying and projecting device 2 is set. A magnetic switch 1 is installed near the groove la.
0 is installed, and this magnetic switch 10 is turned on when a magnet approaches, and when turned on, prohibits lighting of the exposure lamp during a copying operation.

The image copying and projecting device 2 has legs 5a and 5b formed at the lower end of the case 5 that fit into the grooves 1a and lb.
is set so as to completely cover the document table 3. A permanent magnet 6 is embedded in the leg portion 5a, and in this state, the magnetic switch 1o is turned on. A lens 7 is attached to the case 5, and the lens 7 can be rotated to a position where the optical axis is from 11 to 12. This lens 7 is equipped with a ring for focus adjustment and focal length adjustment.

The light passing through this lens 7 is reflected by a reflecting mirror 8.9 and then forms an image on the document table 3. The reflecting mirror 8 moves on an orbit 8a in synchronization with the rotation of the lens 7. This orbit 8a is a part of an ellipse whose two centers are the center of the lens 7 and the rotation axis 9a of the reflecting mirror 9. The reflecting mirror 9 rotates about a rotation axis 9a in synchronization with the rotation of the lens 70. by this,
Even if the lens 7 rotates between the optical axis of 11 and 1!2, the optical distance from the lens 7 to the document table 3 is kept constant, and the focus does not shift due to rotation.

Further, since the light reflected by the reflecting mirror 9 vertically illuminates the document table 3, no image distortion or partial defocus occurs.

A window 5c is provided on the side of the case 5. This window 5C
can be shielded by a cover (not shown). A slit 5d is provided at the lower front of the case 5, and a focus plate 11 made of white vinyl is removably inserted through the slit 5d. A copying machine 1 is attached to the focus plate 11.
The copying positions of each size of paper fed to the paper are indicated by frames. The window 5C and the focusing plate 11 are used when the copying machine 1 and the image copying/projection device 2 are set to face the object to be copied, and are used to confirm the focus, size, copying position, etc. of the image to be copied. (Since the document table 3 is made of transparent glass, the image thereon cannot be seen with the naked eye.)

Further, a projection lamp 14 as a projection component of the image copying and projecting apparatus 2 is installed at a position to illuminate the document table 3 from both sides of the case 5, and a document insertion slot 15 is provided in the side surface of the case 5. This document insertion slot 15 can be covered by a cover (not shown). In order to use this image copying and projecting device 2 as a projector, place the copying machine equipped with this image copying and projecting device facing a white plane such as a screen or a whiteboard, and first press the function selection switch (not shown). Insert it into the projector side. As a result, the reflecting mirror 8 moves to the upper end of the orbit 8a so as not to interfere with the irradiation of the projection lamp 14, and the reflecting mirror 9 transmits the image of the document on the document table 3 to the lens 7 without passing through the reflecting mirror 8. position (
9' to 9"). The reflecting mirror 9 moves on a trajectory 9a between 9' and 9" in synchronization with the rotation of the lens 7, and its inclination angle is set to the optical axis between the document table 3 and the lens 7. Move while changing to hold. After that, turn on the projection lamp 14 and insert the original onto the original table 3 through the original insertion slot 15. The image of this original is projected onto the above-mentioned white plane. When using this image copying and projecting apparatus 2 as a projector, it is desirable to use it with the focus plate 11 inserted so that the light from the projection lamp 14 does not damage the photoreceptor 12 of the copying machine main body 1.

FIG. 3 is a flowchart showing the operation of the control section of the copying machine. When the power switch of the copying machine 1 is turned on, step nl (hereinafter, step ni is simply referred to as ni).
Preliminary operations for copying such as preheating the fuser (JOB 1)
) and when this is completed, click the copy button (PSW)
Waits at n2 until is pressed. When the copy button is pressed, it is determined whether or not the magnetic switch 10 (SW) is on (n3). If it is on, the image copying device 2 is in use, so the exposure lamp is turned off and the copying operation is started. Deeds (
n4), if it is off, performs normal copying operation (n5
) Return to n2.

By using a copying machine with the above configuration, it is possible to copy characters on a blackboard or whiteboard that cannot be placed on the manuscript table, and it is also possible to copy the surface of an object that is not flat. By adjusting the distance between the object to be copied and the copying machine or the focal length of the optical system, it is possible to reduce the size to any desired ratio, and by switching the selection switch, this device can also be used as a projector. When holding a meeting using a whiteboard, the manuscript is projected onto the whiteboard for discussion, and the discussion results recorded on the whiteboard are then copied and recorded using the video copying function. This allows for efficient meeting management.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a structural diagram of the main parts of an image copying and projecting device used in a copying machine which is an embodiment of the present invention, and Fig. 2 is a main part of the main body of the copying machine used in the above embodiment. FIG. 3 is a flowchart showing the operation of the control section of the above embodiment. 2-image copying and projecting device, 6-magnet, 7-lens, 8, 9-reflector, 10-magnetic switch, 14-projection lamp, 5d-document insertion slot.

Claims (1)

[Claims] (1) A device that is detachably set on the document table of a copying machine, and includes a case that covers the document table, and a device that is attached to the opening of the case and forms an image of the outside of the case onto the document table. 1, a means for prohibiting the lighting of an exposure lamp when performing a copying operation when this apparatus is attached, a projection lamp for illuminating the top of the document table, and a projection lamp set in an upright state on the document table. 1. A copying machine comprising: a second optical system for transmitting and projecting an image of an original on a screen installed outside the apparatus in an erect state.