JPH0637972A - Image reader - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an image reading device that can be easily handled regardless of whether it is a transparent original or a reflective original. A reflector 16 is attached to an upper moving unit 3A to which a transmissive light source 4A for a transparent original is attached, and when the read original is a reflective original, the reflector 16 is located above the light receiving unit 6. When the original to be read is a transparent original, the vertical movement units 3A and 5 are controlled so that the transparent light source 4A is located above the light receiving unit 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading apparatus for reading an original using reflected light or transmitted light and outputting the read image signal to an external device such as a computer or a printer.

[0002]

2. Description of the Related Art FIGS. 3 to 5 show, for example, Japanese Patent Laid-Open No. 63-276.
FIG. 6 is a structural diagram showing a conventional image reading device disclosed in Japanese Patent No. 363. In the figure, 0 is an original, 1 is a main body, 2 is a holding plate for pressing the original 0, and has a transparent plate 2a for pressing the original for transmitted light and a reflection plate 2b for pressing the original for reflected light. There is. 3 is an upper moving unit equipped with a transmitted light source 4 for transmitted light, 5 is a lower moving unit, a light receiving section 6 for receiving reflected light or transmitted light, a signal conversion section 7 for converting an optical signal into an electric signal, and a reflection original. The reflection light source 8 of FIG. Reference numeral 9 denotes an operation unit for inputting information of a read original, 10
Is a moving motor of the lower moving unit 5, 11 is a moving belt of the lower moving unit 5, 12 is a guide rod for guiding the moving direction of the lower moving unit 5, 13 is a moving motor of the upper moving unit 3, and 14 is Upper movement unit 3
Is a moving belt, and 15 is a guide rod for guiding the moving direction of the upper moving unit 3.

Next, the operation will be described. First, the document 0 is placed on the main body 1. When the original 0 is a reflective original, the transparent plate 2a is removed, and the original 0 is pressed by the reflective plate 2b, and the operation unit 9
The information of the reflection original is input. In that case, when reading is started, the reflected light source 8 is turned on, the light receiving section 6 receives the reflected light, and the optical signal is sent to the signal conversion section 7 and converted into an electric signal. Then, as shown in FIG. 5, the lower motor 1
0, the lower driving belt 11 moves the lower moving unit 5 along the lower guide bar 12, reads the entire original 0, and outputs the read data to a computer, a printer, or the like.

When the original 0 is a transparent original, the original 0 is pressed by the inserted transparent plate 2a, and the information of the transparent original is input from the operation unit 9. In that case, when the reading is started, the transmissive light source 4 is turned on, the transmitted light is received by the light receiving section 6, and the optical signal thereof is sent to the signal converting section 7 to be converted into an electric signal. The upper unit 3 is moved along the upper guide bar 15 by the upper drive motor 13 and the upper drive belt 14 in synchronization with the driving of the lower moving unit 5 as in the case of the reflection original, so that the entire original 0 is read. Then, the read data is output to a computer, a printer, or the like.

[0005]

Since the conventional image reading apparatus is constructed as described above, for example, as shown in FIG. 3, the transparent plate 2a is taken out in the case of a reflective original, and transparent in the case of a transparent original. The plate 2a must be inserted,
There was a problem that the handling became complicated.

The present invention has been made to solve the above problems, and by attaching a reflecting plate to the upper moving unit, an image reading apparatus which can be easily handled regardless of whether it is a transparent original or a reflective original is obtained. The purpose is to

[0007]

The image reading apparatus according to the present invention comprises a reflection plate attached to the upper moving unit.

[0008]

In the image reading apparatus according to the present invention, the upper moving unit is moved so that the reflecting plate is located right above the light receiving portion when the read original is a reflective original, and is directly above the light receiving portion when the read original is a transparent original. By moving the upper moving unit so that the transmissive light source is located at the position, it is not necessary to replace the upper moving unit with a document.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a block diagram when reading a reflective original, and FIG. 2 is a block diagram when reading a transparent original. The same or corresponding parts as those of the conventional one are designated by the same reference numerals and the description thereof will be omitted. In the figure, 2A is a transparent plate that presses the original 0, 3A
Is an upper moving unit equipped with a transmissive light source 4A for the transparent original 0a and a reflecting plate 16 for the reflective light source 0b.

Next, the operation will be described. First, when the original placed on the main body 1 is the reflective original 0b, information of the reflective original 0b is first input from the operation unit 9. Then, as shown in FIG. 1, the upper moving unit 3A is moved to a position where the light from the reflection light source 8 is reflected by the reflection plate 16 and can be received by the light receiving unit 6. When the initial position of the upper moving unit 3A is set, the operation thereafter is the same as the conventional one. First, when reading is started, the reflected light source 8 is turned on, the light receiving section 6 receives the reflected light, and the optical signal is sent to the signal conversion section 7 and converted into an electric signal. Then, as shown in FIG. 5, the lower motor 1
1. The lower drive belt 12 moves the lower moving unit 5 along the lower guide rod 13 to read the entire original 0b, and the read data is read by a computer,
Output to a printer, etc.

Next, the original placed on the main body 1 is the transparent original 0.
If it is a, the operation unit 9 is used as in the case of the reflection original 0b.
The information of the transparent original 0a is further input. Then, the upper moving unit 3A moves the upper moving unit 3A to a position where the light of the transmitted light source 4A can be received by the light receiving unit 6, as shown in FIG. When the initial position of the upper moving unit 3A is set, the operation thereafter is the same as the conventional one. When the reading is started, the transmissive light source 4A is turned on, the transmitted light is received by the light receiving section 6, and the optical signal is sent to the signal converting section 7 to be converted into an electric signal. Then, the upper moving unit 3A is moved along the upper guide rod 15 by the upper driving motor 13 and the upper driving belt 14 in accordance with the driving of the lower moving unit 5 as in the case of the reflection original 0b, and the original 0a is moved. The whole is read, and the read data is output to a computer, a printer, or the like.

[0012]

As described above, according to the present invention, the reflection plate for the reflection original is attached to the upper moving unit.
Since the same unit can be used regardless of whether it is a reflective original or a transparent original, it is possible to obtain an effect of easy handling.

[Brief description of drawings]

FIG. 1 is a configuration diagram when reading a reflective original according to an embodiment of the present invention.

FIG. 2 is a configuration diagram at the time of reading a transparent original.

FIG. 3 is a diagram showing an appearance of a conventional image reading device.

FIG. 4 is a diagram showing the configuration of FIG.

5 is a diagram showing the drive system of FIG. 3. FIG.

[Explanation of symbols]

 0a Transparent original 0b Reflective original 1 Main body 2A Transparent plate 3A Upper moving unit 4A Transparent light source 5 Lower moving unit 6 Light receiving part 7 Signal converting part 8 Reflecting light source 16 Reflecting plate

Claims (1)

[Claims] 1. An image reading apparatus for reading image information of a document placed on a document table, wherein a first light source for irradiating a document with light from above the document table and the document table A second light source that irradiates the original with light from below, an opaque plate that reflects the light from the second light source, a transparent plate that presses the original against the original table, and the first Photoelectric conversion means for receiving the light transmitted from the light source from the light source transmitted through the document or the reflected light reflected from the light source from the second light source to the document, and converting the light signal into an electric signal. Designating means for designating whether it is for light or transmitted light, and in response to the designation by this designating means, when the original is for transmitted light, the first light source is moved to the upper part of the light receiving part and the first light source is moved. Control to turn on the light source of the Opaque plate image reading apparatus characterized by comprising a control means for moving the upper portion of the light receiving portion performs a control to turn the second light source.