JPS59142531A - Overhead projector having picture reading and recording function - Google Patents

Abstract

PURPOSE:To execute a read scanning of an original on a platen illuminated by a light source of the inside of an OHP and to copy it by providing a picture reader so as to move in parallel, on the upper part of the OHP. CONSTITUTION:An OHP illuminates a transmissive original 4 on a platen 3 by a light source 2, and executes a projection by a lens 6 and a mirror 7. A picture reader 5 is provided freely movably in the direction as indicated with an arrow F, on the platen 3. The device 5 is constituted of a tight adhesion type image sensor 8 and an optical system 9. The sensor 8 has plural photoelectric transducers on an insulator substrate, and the length of an array of the transducer is the same as the width in the main scanning direction S of the platen 3. The optical system 9 is made, for instance, of an optical fiber array or a lense array, etc., and leads a light of the original 4 to the sensor 8 by an image formation of 1 to 1, by which it is read by the sensor 8. The device 5 reads the original 4 in the direction S, and also it is scanned in the sub-scanning direction F by a motor, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is configured by combining an overhead projector (hereinafter referred to as an OHP) with an image reading device, and reads an image of a document sheet placed on a platen of the OHP and records the image. The present invention relates to an overhead projector having an image reading and recording function.

As is well known, in OHP, a transparent original sheet placed on a platen is irradiated with light from an internal light source, the resulting image is guided by a light collection device, and is enlarged and projected onto a predetermined projection surface. It is a device.

However, since no conventional OHP was equipped with an image reading function, if you wanted to obtain a hard copy of the image drawn on the original sheet, conventionally you could do so by using another copying machine etc. I had obtained the above hard copy. However, this was very inconvenient, for example, when the OHP and the copying machine were installed far apart.

This invention was made in view of the above circumstances, and OH
It is an object of the present invention to provide a new image processing device which is equipped with a function of reading or reading and recording an image drawn on a document sheet in addition to the original enlargement and projection function of P.

That is, in the present invention, an image reading device having a large contact type image sensor having a width corresponding to at least the width of a document sheet is disposed above a platen of an OHP so as to perform translation scanning with respect to the top surface of the platen. The image written on the original sheet placed on the platen is read and scanned based on the irradiation light from the projection light source provided inside the OHP housing. An appropriate recording means is built inside, and recording is performed based on image information read by the image sensor.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an overhead logictor having an image reading and recording function according to the present invention will be described in detail with reference to embodiments shown in the accompanying drawings.

1 and 2 show one embodiment of the present invention, with FIG. 1 being a perspective view and FIG. 2 being a side view showing its internal structure.

In Figures 1 and 2, 1 is an OHP housing, 2 is a light source built into the housing 1, 3 is a platen, 4 is a transparent sheet with a desired image drawn on it, and 5 is a large contact type. An image reading device constituted by an image sensor 8 and an optical system 9, 6 a lens, 7 a mirror, and 10 a recording device for recording images read by the image reading device 5. This embodiment has the original function of an OHP. When implementing this, it is done as follows. First, the image reading device 5 is moved to the position shown in FIG. 2 5' so that the light from the light source 2 passing through the transparent sheet 4 is not blocked. The following operation is similar to that of a conventional OHP. That is, light source 2
The transparent sheet 4 is irradiated with light, the irradiated light is collected by a lens 6, and further reflected at an appropriate angle by a mirror 7, thereby creating an image corresponding to the image drawn on the transparent sheet 4. is enlarged and projected onto a suitable projection surface (not shown).

Next, the internal configuration of the image reading device 5 will be explained.

The electrodeposition type image sensor 8 is constructed by forming a plurality of photoelectric conversion elements on an insulating substrate, and providing a circuit for sweeping and scanning the elements on the same substrate or externally. In this embodiment, the length of the photoelectric conversion element array is the same as i in the main scanning direction of the platen 3 (direction of arrow S in FIG. 1). In this embodiment, it is assumed that the size of the platen 3 is almost the same as the size of the original sheet 4. Next, the optical system 9 is composed of, for example, an optical fiber array or a lens play, and transmits light from the light source 2 received through the transparent sheet 4 to the photoelectric conversion element. By guiding one image, the image drawn on the transparent sheet is read by the image sensor 8. In this way, since the image reading device 5 reads images by one-to-one imaging, the imaging optical path length can be shortened.
The device can be made very compact.

The image recording operation by the apparatus of this embodiment is performed as follows.

First, the operator places the transparent sheet 4 on which a note copy is desired on the platen 3, and then turns on the switch 11. As a result, the image reading device 5 and the recording device 1
0 becomes active and document scanning and recording operations are started. The image reading device 5&'i reads the original image in the main scanning direction S, and scans the document image in the sub-scanning direction (in the direction of the arrow F) using an appropriate motor (not shown), thereby scanning the transparent sheet (4). The image drawn on the image is read. The recording device 10 is, for example, a printer that employs thermal recording, operates in synchronization with the document reading operation by the image reading device 5, receives photoelectric conversion outputs of document images successively output from the image reading device 5, and converts the corresponding document images. Recording operations will be performed in accordance with the photoelectric conversion output. In this way, a note corresponding to the original image can be obtained.

In the example device, for convenience of explanation, the play length of the photoelectric conversion element was set to be the same as the length of the original sheet in the main scanning direction, but the size of the OHP platen is usually larger than the thickness of the original sheet. It's big. In such a case, it is sufficient to determine a predetermined position on the platen surface at which the original sheet should be placed, and to arrange the reading sensor at a position corresponding to the position. Further, predetermined positions on the platen surface are determined corresponding to document sheets of different sizes,
In addition, the length of the photoelectric conversion element array is made to correspond to the width of the largest original sheet, and the width of the original sheet to be read is made known to the apparatus by, for example, turning on an appropriate switch, and the photoelectric conversion element array of the required length is made to correspond to the width of the largest original sheet. It is also possible to make only one active.

Furthermore, in this embodiment, when a switch is turned on, the image reading device 5 is automatically moved in the sub-scanning direction F based on the rotation of the motor, etc., and then the operator manually transports the image reading device. You can also do this.

Further, in this embodiment, the recording device is built into the housing, and the configuration is such that the desired notebook can be obtained directly by the embodiment, but the image reading device 5 can be connected to an external printer. By doing so, it becomes possible to obtain a hard copy using an external printer without a built-in recording device.

As explained above, according to the present invention, 1) the original sheet I and
If the image drawn on the screen can be read immediately and with a simple operation, and if the housing is equipped with a recording means,
You can easily obtain the desired hard copy.

2) Since it can also be used as a projection light source for OHP, there is no need for a special light source for reading and scanning.

3) If a dense light type large image sensor is used as the reading device, the reading section can be made very small.

and other excellent effects.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing one embodiment of the present invention, and FIG. 2 is a side view showing an example of the internal configuration of the embodiment device shown in FIG.

Claims (1)

[Claims] In the O-Kobuto projector, which irradiates light from an internal light source onto a document sheet placed on a platen, guides the obtained light image by a light collecting device, and projects it onto a projection surface, the O-Kobuto projector An image reading device is disposed above the platen so as to move in parallel with the top surface of the platen, and the image reading device reads an image of a document sheet placed on the platen and records the image. Overherad projector with reading and recording function.