JPH03140936A - Copying machine - Google Patents

Abstract

PURPOSE:To effectively utilize a space in an office and to immediately photograph a copied image of an OHP sheet by providing a copying function and the function of an overhead projector OHP. CONSTITUTION:In the case of copying an original, the original is placed on an original platen 18 to perform the ordinary copying of the original. In the case of using the machine as the overhead projector, an OHP unit 100 is set on the original platen 18 of a copying machine main body 10 and the OHP sheet 34 is placed on the OHP sheet placing table 24 of the unit 100. By turning on a line light source 40 inside the copying machine main body, linear light from the light source 40 is changed to plane light by the conversion lens 26 of the OHP sheet placing table 24 and transmitted through the OHP sheet 34. Then, it is enlarged by an enlarging and projecting lens 30, reflected by a reflection mirror 32 and reaches a screen. Thus, the space in the office is effectively utilized and the copied image of the OHP sheet is immediately projected.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a copying machine.

[Prior Art and Problems to be Solved by the Invention] Copying machines copy images of originals, and currently there are also machines that copy images of originals or OHP (overhead projector) sheets onto other OHP sheets. Are known. When copying such an OHP sheet, an overhead projector must be installed separately from the copying machine in order to check whether the image is correctly copied onto the OHP sheet. If an overhead projector is installed separately from a copying machine in this way, there is a problem in that the office space cannot be used effectively.

SUMMARY OF THE INVENTION An object of the present invention is to provide a copying machine that has a copying function and an overhead projector function, thereby making effective use of office space, and capable of immediately projecting a copied image on an OHP sheet. It is in.

[Means for Solving the Problems] The present invention includes a copying machine main body having a line light source inside, and an OHP unit detachably installed on a document table of the copying machine main body, the OHP unit comprising: , an OHP sheet mounting table that has a conversion lens that converts the linear light from the linear light source into planar light, and that places an OHP sheet on the optical path of the planar light, and magnifies the transmitted light that passes through the OHP sheet. This includes a magnifying projection lens that reflects the magnified transmitted light in a predetermined direction.

[Function] In the present invention, when the copying machine is used as an overhead projector, an OHP unit is installed on the document table of the copying machine main body, and an OHP sheet is placed on the OHP sheet mounting table. Then, when the linear light source inside the copying machine is turned on, the linear light from the linear light source is converted into planar light by the conversion lens of the OHP sheet mounting table, transmitted through the OHP sheet, and then transmitted by the magnifying projection lens. The image is magnified and reflected by a mirror before reaching the screen. As a result, the image on the OHP sheet is projected onto the screen.

[Embodiments] Hereinafter, preferred embodiments of the present invention will be described based on the drawings.

FIG. 1 shows the external appearance of a copying machine according to an embodiment of the present invention. In the figure, a copying machine main body 10 has various operation buttons 12, 14, 16 on its front part 10a, a document table 18 made of glass on its upper part 10b, and a halogen lamp etc. It has a line light source 40 that is

When copying using this copying machine, first open the document tray cover (not shown), place the document on the document table 18, cover the document with the document tray cover, and then turn on the start switch. . As a result, the linear light source 40 is turned on, and the original is irradiated with linear light through the slit 42, so that the original is copied.

The rear end portion 10bb of the upper portion 10b of the copying machine main body 10
A mounting hole 20 is formed in the mounting hole 20, and an OHP
The tip of the support column 22 of the unit 100 is designed to be detachably inserted.

At the center of this support 22, an OHP sheet mounting table 24 is provided, which is comprised of a conversion lens 26 that converts the linear light irradiated from the inside of the copying machine body 10 through the slit 42 into planar light.
But the installation is fixed.

The conversion lens 26 has a slit 4 as shown in FIG.
A parallel Fresnel lens 28a converts the linear light irradiated through the OHP sheet into planar light with a rectangular spread of the same size as the OHP sheet, and the parallel Fresnel lens 28a converts the linear light irradiated through the OHP sheet into planar light with a rectangular spread of the same size as the OHP sheet. Ring-shaped Fresnel lens 28 for focusing
b, the ring-shaped Fresnel lens 28b
It is configured so that an OHP sheet is placed thereon.

Further, at the tip of the pillar 22, there is provided an enlarged projection lens 30 for enlarging and projecting the transmitted light from the OHP sheet, and a reflecting mirror 32 for reflecting the enlarged image toward a screen (not shown). is installed.

Note that the distance between the linear light source 40 and the conversion lens 26 and the distance between the conversion lens 26 and the enlarged projection lens 30 may be appropriately determined in consideration of the focal length of each lens 26, 30, etc.

The copying machine according to the embodiment of the present invention has the above configuration,
The effect will be explained below.

First, when copying an original, the original is placed on the original table 18, and thereby normal original copying can be performed.

Next, when using this copying machine as an over-the-top projector, an OHP is inserted into the mounting hole 20 of the copying machine main body 10.
The OHP unit 100 is attached to the copying machine main body 10 by inserting the column 22 of the unit 100.

In this state, the conversion lens 26 of the OHP sheet mounting table 24
An OHP sheet 34 is placed on top.

When the linear light source 40 inside the copying machine main body 10 is turned on, the light from the linear light source 40 becomes linear light through the slit 42 and is irradiated onto the conversion lens 26. The light is converted into planar light, transmitted through the OHP sheet 34, and focused on the magnifying projection lens 30. Here, OH
The transmitted light from the P sheet 34 is magnified by the magnifying projection lens 30, reflected by the reflecting mirror 32, and reaches the screen.

As a result, the OHP sheet 340 image is projected onto the screen.

Although a preferred embodiment of the present invention has been described above, the present invention is not limited thereto, and various modifications can be made within the scope of the gist of the invention.

[Effects of the Invention] As described above, according to the present invention, it is possible to have a copying function and an overhead projector function.

Therefore, compared to the case where two separate copying machines and overhead projectors are installed, it is only necessary to install one copying machine and an overhead projector, and office space can be used effectively.

In addition, when an OHP sheet is copied using the copy function, it is possible to immediately project the image of the copied OHP sheet using the function of the overhead projector, thus reducing the time required to prepare the overhead projector. can be saved.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of a copying machine according to an embodiment of the present invention, and FIG. 2 is an explanatory diagram of a conversion lens used in this embodiment.

Claims (1)

[Claims] (1) A copying machine main body having a linear light source therein; and an OHP unit removably installed on a document table of the copying machine main body, and the OHP unit emits linear light from the linear light source. An OHP that has a conversion lens that converts into planar light and places an OHP sheet in the optical path of the planar light.
A copying machine comprising: a sheet mounting table; a magnifying projection lens that magnifies transmitted light passing through the OHP sheet; and a reflecting mirror that reflects the magnified transmitted light in a predetermined direction.