JPH06237337A - Picture projector - Google Patents

Abstract

PURPOSE:To provide the small sized and inexpensive picture projector in which its contained components are easily extracted in use, which are used with general-purpose function as being added to any type of a copying machine at its accurate position without various restrictions such as the size and in which contained components are easily contained surely with safety not in use. CONSTITUTION:The picture projector which is added removably to a picture read section of a copying machine A or the like and uses a picture read section to read a projected light obtained by lighting a transparent original 2 such as a film by a light source 3 is provided with a projection section 1 having the light source 3 lighting the transparent original and having a projecting lens 4 projecting a projected light of the transparent original, with a deflection section 6 deflecting the projected light toward the picture read section of the copying machine, and a lens cover 9 formed to open/close a projection path of the projecting lens at the projection section and having a positioning means positioning the deflection section when the path is open.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an image projection device which is used by being attached to a document image reading device or the like equipped in an electrophotographic copying machine or the like.

[0002]

2. Description of the Related Art In conventional electrophotographic copying machines, especially digital color copying machines, in addition to the usual copying of reflection originals,
Some have a function of copying from a transparent original such as 35 mm photographic film. In order to copy the image on the transparent original, a method of illuminating the transparent original with a light source and reading the original image from the projection light obtained by projecting this with a projection lens is generally used. As an option for that, a slide projector, a film scanner, or the like is used. The film scanner has both a projection unit and a reading unit for a projected original, and a copy of a transparent original can be easily obtained by electrically connecting the film scanner to a digital color copying machine or printer. However, there was a problem that the price was high.

On the other hand, the slide projector is composed of only a projection unit for a projection original, and a reading unit such as a digital color copying machine or a scanner is used as the reading unit. Therefore, it is cheaper than the above film scanner and cheap and suitable as an option for a digital color copying machine or the like. In reading an original image using this slide projector, a method is generally used in which an aerial image is formed on a contact glass of a copying machine or the like by projection light and the image is read by a reading section of the copying machine or scanner. ing. Therefore, when using the slide projector, a deflecting unit that guides the projection light to the reading unit of the scanner is provided on the contact glass instead of the normal reflection original. However, the copying machine or scanner to which the above projector is attached is not a dedicated machine for transparent originals, but is also used with reflective originals.Therefore, when copying transparent originals, the deflecting unit is installed on the contact glass, On the other hand, at the time of copying a normal reflective original, the deflecting portion is removed from the contact glass, and when not in use, a special installation place is provided for storage.

When the above slide projector is used, the transparent original used is a negative film,
There are various types of transparent originals to be used, such as positive film, strip film, mount film, etc., and projectors are equipped with accessories for all films. These accessories include various film holders, color correction filters, base films for setting originals, blowers for cleaning films and lenses, and the like. Usually, these accessories are stored in a separate case or the like. However, these stored items were not always ready to be taken out when the projector was used. Further, there has been an accident that the deflecting section and accessories are damaged or lost during mounting, removal, storage, and removal.

From such a point, in the image projection apparatus attached to and utilized in the original image reading apparatus provided in the electrophotographic copying machine or the like, when the slide projector is used, it can be attached / detached to / from the copying machine main body. There is one that is provided with such a deflecting portion (projection image receiving device) and a positioning means for easily positioning with respect to the main body of the copying machine (JP-A-59).
-198440). Further, there is a structure in which the projection unit (illuminating unit) and the deflection unit (deflecting unit) are connected by a connecting unit so that the projection unit (illuminating unit) and the deflection unit (deflecting unit) can be moved to a position retracted from the document reading apparatus (Japanese Patent Laid-Open No. 2-294629). reference).

However, in any of the above methods, it is easy to be affected by the constraint conditions such as the size of the copying machine, and the positional relationship between the deflecting unit and the projection unit is optically determined. Therefore, different types of copying machines are used. It is difficult to support
There was a problem that the deflecting part could not be attached. Furthermore, other peripheral machines (ADF, etc.)
Since there is also a problem in that there are many restrictions in the positioning means as described above. Further, the movable connecting means has a problem that the mechanism of the connecting portion is large and complicated and the number of parts increases, resulting in high cost.

[0007]

An image projection apparatus attached to and used with a document image reading apparatus or the like provided in a conventional electrophotographic copying machine or the like is designed to be used when the image projection apparatus is used.
Not only is it subject to various restrictions such as differences in the size of the copying machine, but it is not always the case that the storage parts such as the deflection part and accessories can be easily taken out from those storage parts. There are problems such as damage or loss of stored items such as the deflecting unit and accessories, the device becomes complicated, and the cost increases due to an increase in the number of parts.

[0008]

SUMMARY OF THE INVENTION Therefore, the present invention is to solve such a problem. That is, when the image projection device is used, it is easy to take out the stored items, and there is versatility that it can be attached to any copying machine or the like at an accurate position without being restricted by various restrictions such as size. It is an object of the present invention to provide a small-sized and inexpensive image projection device which can store the deflecting unit, the lens and the like safely and easily when not in use and does not require special parts.

[0009]

In order to achieve the above object, the present invention is obtained by irradiating a transparent original such as a film with a light source, which is detachably attached to an image reading unit of a copying machine or the like. In an image projection device that causes the image reading unit to read the projected light, a projection unit having a light source for illuminating the transparent original and a projection lens for projecting the projected light of the transparent original; and the projection light for the copying machine. A lens having a deflecting unit for deflecting toward the image reading unit, a positioning unit provided in the projecting unit so as to be able to open and close the projection path of the projection lens, and deciding a position where the deflecting unit is arranged when opened. The present invention is characterized in that a cover is provided, and a mounting table for mounting the deflection unit and a storage unit for storing accessories are arranged at front and rear positions of the projection unit.

[0010]

In the image projection apparatus constructed as described above, the deflecting portion is positioned by opening the lens cover of the projection lens when in use, and when not in use, on a mounting table provided in front of and behind the projection lens. By storing the deflecting unit and accessories in the storage unit, it is easy to take out the storage unit when using the image projection device, and it can be used in any copier or the like without being restricted by various sizes and the like. There is versatility that the deflection unit can be attached to the correct position for use, and when not in use, the deflection unit, lens, etc. can be safely and securely stored easily.
It is possible to provide a small-sized and inexpensive image projection device that does not require special parts.

[0011]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a vertical sectional view showing the overall configuration of an image projection apparatus according to an embodiment of the present invention, and FIG. 2 is a rear view of the apparatus. 3 is an external perspective view of the device of the present invention,
FIG. 4 is a perspective view of a main part. The image projection apparatus 0 is roughly configured by a deflecting unit 6 which is detachably installed on the copying machine main body A, a projection section 1 which is arranged on a mounting section 13 which is arranged adjacent to the side surface of the copying machine main body A, and the like. There is. The projection unit 1 has a light source 3, a projection lens 4, a lens cover 9 and the like which are arranged with a transparent original 2 which is vertically inserted and removed freely interposed therebetween. The deflecting unit 6 includes a base 16, a mirror 19 arranged on the lower surface of an upper lid 20 whose one end is pivotally supported to be openable and closable with respect to the base 16, and the like. The mounting portion 13 is configured as a means different from the image projection apparatus and the copying machine, and is detachably fixed to the side surface of the copying machine. The base 16 is provided with a Fresnel lens 16a and a glass plate 16b for transmitting the projection light reflected by the mirror 19 to the image reading section of the copying machine located below.

In FIGS. 1 and 2, the projection unit 1 and the deflection unit 6 are shown.
Are composed of different units. The projection unit 1
It is positioned and fixed to the copying machine main body A by the mounting portion 13. A lens cover 9 having a lower end rotatably supported by a support pin 14 is provided on a side surface of the projection lens 4 of the projection unit 1, that is, an emission side surface. The lens cover 9 is closed to cover the projection lens 4 as shown by the solid line in FIG. 1 when the image projection apparatus 0 is not used. However, when the image projection device 0 is used, it is rotated in the opening direction indicated by arrow A to open the projection lens 4, and is rotated to the position shown by the dashed line in the figure and stopped.
A position regulating pin 15 for connecting and positioning the base 16 of the deflecting portion 6 at a proper position on the upper end portion of the lens cover 9.
Is provided. In addition, the base 16 of the deflection unit 6 is
A position regulating hole 17 is provided for fitting the pin 15 and connecting the cover 9 and the base 16 to each other. The position regulating pin 15 and the base 16 constitute the positioning means 10.

When the image projector 0 is used, the position regulating pin 15 of the lens cover 9 and the deflecting portion 6 are used.
By fitting the other position regulating hole 17 of the positioning means 10 provided in the base 16 of the above, the position is accurately set on the contact glass 7 which is a part of the image reading section B of the copying machine main body A. The deflection unit 6 is positioned at the position. In the projection unit 1, the projection light emitted from the light source 3 and transmitted through the transparent original 2 and emitted to the front is projected on the contact glass 7, and then a copying operation of a copying machine or the like is performed, whereby the transparent original 2 Images can be copied. The description of the configuration and operation of an electrophotographic copying machine or the like that performs copying is omitted because it is well known.

As shown in FIGS. 2 and 3, the projection unit 1 includes:
When the image projection device 0 is not in use, the deflection unit 6 is used.
A low and flat mounting table 11 for mounting the device is provided by utilizing the rear housing of the projection unit 1. The mounting table 11 is
It is formed in a flat shelf shape so that the deflecting unit 6 can be stacked thereon, and when the deflecting unit 6 is placed, the deflecting unit 6 and the projecting unit 1 have substantially the same height. The height is set.

There are various types of transparent originals 2 that can be used in the image projection apparatus 0. Various color correction filters (not shown) for supporting all of these films, a base film for setting originals, films, and the like. A storage portion 12 which is a space for storing accessories such as a blower for cleaning the lens is arranged on the front side of the projection lens 4 and is opened and closed by a cover 12a. Further, the film holder storage 18 and the like can be provided on the right side of the projection lens 4.

As shown in FIG. 3, when the image projection apparatus 0 is not used, the lens cover 9 is rotated in the closing direction shown by the arrow B in the figure to close the projection lens 4 in a state of covering it. Further, the deflecting unit 6 is placed on the mounting table 11, and accessories such as various color correction filters (not shown), a base film for setting originals, and a blower for cleaning films and lenses are stored in the storage unit 12. . Therefore, when the image projection apparatus 0 is not used, the overall shape of the apparatus including accessories can be made small and compact. On the other hand, when the image projection device 0 is used, it is housed so that the taking-out and setting work can be performed easily and accurately. That is, when using
The deflecting unit 6 is transferred from the mounting table 11 onto the copying machine main body A and mounted thereon, and the projection unit 1 is positioned on the mounting unit 13 as shown in FIG. Necessary equipment is taken out from the storage section 12, and the film holder and the like are taken out from the storage section 18 for use. There are a wide variety of copying machines to which this image projection apparatus can be applied.

In FIG. 4, when the deflecting unit 6 is not in use, the upper lid 20 having the mirror 19 on the lower surface is pivoted in the closing direction indicated by the arrow C to close it on the base 16, and the mirror 1
The mirror surface of 9 is protected. The upper lid 20 and the base 16 are connected by a well-known opening / closing link mechanism 21 so that the upper lid can be fixed in the open / closed state. Figure 5
FIG. 6 is a plan view showing a main part configuration of an image projection apparatus of another embodiment of the present invention. The same parts as those in the above embodiment are designated by the same reference numerals and duplicate description will be omitted, but the lens cover 90 in this embodiment is Similar to the lens cover 9 of the above-described embodiment, the lens surface of the projection lens 4 is opened and closed by being supported by the support pin 14 so as to be openable and closable with respect to the housing of the projection unit 1. The lens cover 90 is closed so as to cover the projection lens 4 when the image projection device 0 is not used. However, when the image projection device 0 is used, the projection lens 4 is opened to the use state and stopped on the upper surface of the copying machine as shown in the figure.

At the inner upper edge of the lens cover 90,
One mark 150 for positioning the deflecting unit 6 is provided. The other mark 170 is provided on the base 160 side of the deflecting unit 6. Both marks 150 and 170 constitute the positioning means 10, and by aligning both marks as shown in the figure, the projection unit 1 and the changing unit 6 can be positioned. That is, when the image projection device 0 is used, one mark 150 of the positioning means 10 of the lens cover 90 and the other mark 170 of the positioning means 10 provided on the base 160 of the deflection section 6 are butted against each other. Thus, the deflection section 6 is positioned and installed at a position to be arranged on the contact glass 7. Other configurations and operations are described in FIG.
The description is omitted because it is the same as the embodiment described in FIG.

[0019]

Since the present invention is configured as described above, the deflecting portion can be accurately and easily positioned by opening the lens cover of the projection lens when in use, and the projection portion is projected when not in use. Since the deflection unit and accessories are stored in front of and behind the lens, it is easy to take out the stored items when using the image projection device, and it can be used in any copier, etc. without being subject to various restrictions such as size. Is also versatile that can be used by attaching the deflection unit to the correct position.When not in use, the deflection unit, lens, etc. can be stored safely and securely and easily, and no special parts are required. An image projection device can be provided.

[Brief description of drawings]

FIG. 1 is a front sectional view showing an overall configuration of an image projection apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view of the image projection apparatus of the embodiment of FIG.

FIG. 3 is a perspective view of the image projection apparatus of the embodiment of FIG. 1 in a non-use state.

FIG. 4 is a perspective view of a main part of the image projection device in FIG.

FIG. 5 is a plan view of a main part of an image projection device according to another embodiment of the present invention.

[Explanation of symbols]

A ... Copier main body, B ... Image reading unit, 0 ... Image projection device, 1 ... Projection unit, 2 ... Transparent document, 3 ...
..Light source, 4 ... Projection lens, 5 ... Projection light, 6 ...
..Deflection part, 7 ... Contact lens, 8 ... Light receiving element, 9 ... Lens cover, 10 ... Positioning means, 11 ... Storage part (deflection part), 12 ... Storage part (Accessory), 13 ... Mounting part, 14 ... Support pin,
15: Position regulating pin, 16: Base, 17 ...
・ Position control hole, 18 ... Film holder storage part, 19
... Mirror, 90 ... Lens cover, 150 ...
Mark, 160 ... Base, 170 ... Mark.

Claims (2)

[Claims] 1. An image projection apparatus detachably attached to an image reading section of a copying machine or the like, and causing the image reading section to read projection light obtained by irradiating a transparent original such as a film with a light source. A projection unit having a light source for irradiating the transparent original and a projection lens for projecting projection light of the transparent original; a deflection unit for deflecting the projection light toward an image reading unit of the copying machine; and the projection unit And a lens cover that is configured to be capable of opening and closing the projection path of the projection lens and that has a positioning unit that determines the position where the deflecting unit is arranged when the projection lens is opened. 2. The image projection apparatus according to claim 1, wherein a mounting table for mounting the deflection section and a storage section for storing accessories are respectively arranged at front and rear positions of the projection section.