JPH0292149A - Original reader - Google Patents

Abstract

PURPOSE:To simplify the construction and to easily confirm a reading position by providing a photoelectric converting element to generate an electric signal in accordance with the reflecting light from a picture on an original and a means to divide a part of the reflecting light and guide it to an observation window provided on the surface of a case. CONSTITUTION:A half mirror 8 to divide the light quantity is provided on the way of the light path of the reflecting light from the picture of an original 1 in a device case 2 and further, a reflecting mirror 10 to guide the divided light to an observation window 9 provided on the surface of the device case 2 is provided. The device case 2 is mounted on the original 1 to be read, while the observation window 9 is watched, the device case 2 is moved so that a straight line-shaped part L1 on the original 1 can be positioned at the reading position mark 11 in the observation window. After the position movement completion, reading is started, and while the observation window 9 is confirmed, the reading is executed by moving the device case 2 in the prescribed direction. Thus, the original can be easily and correctly read.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a hand-held document reading device that photoelectrically converts the image of a document, quantizes it, and processes the information.

BACKGROUND OF THE INVENTION In recent years, there has been remarkable progress in image processing technology. In particular, document reading devices are used for facsimile communication and copying technology, and handheld devices in particular have been attracting attention recently.

FIG. 4 shows an example of a conventional hand-held document reading device. In FIG. 4, 1 is a document to be read, and 2 is a housing of the document reading device, which is manually moved in the direction of the arrow (sub-scanning direction). The device housing 2 includes a light source 3, a condensing lens 4, a self-scanning photoelectric conversion element 6, a roller 6, and an encoder 7 synchronized with the roller 6.

The operation of the reading device configured as described above will be described below.

First, move the reading section of the device housing 2 to the linear portion L on the original 1.
1 and start reading, the linear portion L
1 is irradiated onto a light source 3, and its reflected light S1 is focused on a photoelectric conversion element 5 through a condensing lens 4, and an electrical signal is output.

Next, when the device housing 2 is moved in a predetermined direction, the roller 6 rotates, and a signal from the encoder 7 generated in synchronization with the rotation causes the linear portions 3 to be continuously connected L2, L3, . . . An electrical signal can be obtained in the same way as... The obtained electrical signal is quantized and information processed.

Problem to be Solved by the Invention However, with the above configuration, when the device housing is positioned on the document, the nine reading parts are covered by the device housing, so it is difficult to know which position on the document is actually being read. If the position is not the desired position, it is necessary to read it once and then display it on a display such as a disfluray ray to confirm the position, and if the position is not the desired position, the same operation must be performed again.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hand-held document reading device which has a simple structure and allows easy confirmation of the reading position by eliminating the problems of the prior art as described above.

Means for Solving the Problems In order to solve the above problems, the reading device of the present invention includes a means for dividing a part of the light amount provided in the optical path of the reflected light from the image on the document, and a means for dividing a part of the light quantity. and an optical path changing means for guiding the reflected light to an observation window provided on the surface of the device.

Effects According to the above-mentioned configuration, since the reading section can be visually observed through the observation window, there is no need to take the trouble of reading once and confirming it as in the conventional method, and reading errors can be prevented because the irregular reading range can be viewed at any time. As a result, it is possible to read the original easily and accurately.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 is a configuration diagram of an embodiment of the present invention, and the same components as those in the conventional configuration shown in FIG. 4 are given the same reference numerals. The difference between this embodiment and the conventional configuration shown in FIG. 4 is that the device housing 2
A half mirror 8 is provided in the optical path of the reflected light from the image of the original document 1 to divide the amount of light, and a reflecting mirror 10 is further provided to guide the divided light to an observation window 9 provided on the surface of the device housing 2. At the point. FIG. 2 is a diagram showing a reading section that can be visually observed through the observation window 9.

5 penos The operation of the above configuration will be explained below.

First, place the device housing 2 on top of the original 1 to be read,
As shown in FIG. 2 while looking at the observation window 9, the device housing 2 is moved so that the linear portion L1 on the document 1 is positioned at the reading position mark 11 within the observation window. After completing the position movement,
Start reading and check the observation window 9 while opening the device housing 2.
Reading can be performed by moving in a predetermined direction. The reading operation is the same as in the conventional example, so a description thereof will be omitted here.

FIG. 3 shows an embodiment in which the angle of the reflecting mirror 10 can be adjusted. By rotating an angle adjustment knob 12 provided on the side surface of the device housing 2, the angle of the reflecting mirror 10 can be adjusted.

In this configuration, during a reading operation, the apparatus housing 2 is placed on the original 1, and while looking at the observation window 9, the angle adjustment knob 12 is rotated so that the original reading part is perpendicular to the line of sight. It becomes possible to adjust the angle of 6 pages to the optimum position.

Effects of the Invention As described above, according to the present invention, the reading range can be confirmed because the reading portion can be visually observed through the observation window provided on the surface of the device housing, and the angle of the reflecting mirror can be adjusted. For example, the angle of the reflecting mirror can be adjusted according to the viewing angle of the user, so that the reading position can always be confirmed in an optimal state. As a result, it becomes possible to read the original easily and accurately.

[Brief explanation of drawings]

FIG. 1 is a side sectional view showing a schematic configuration of a document reading device according to an embodiment of the present invention, FIG. 2 is a plan view showing an observation window provided on the surface of the device, and FIG. FIG. 4 is a schematic perspective view of a document reading device, and FIG. 4 is a side sectional view showing a schematic configuration of a conventional document reading device. 1... Original document, 2... Reading device housing, 3... Light source, 4... Condensing lens, 5
...Photoelectric conversion element, 6...Roller, 7
... Encoder, 8 ... Half 7 peno mirror, 9 ... Observation window, 1Q ... Reflection mirror 11 ... Read position mark, 12 ...・・・
...Angle adjustment knob.

Claims (2)

[Claims] (1) A photoelectric conversion element that generates an electrical signal in accordance with the reflected light from the image on the document, a means for dividing a part of the reflected light, and a housing movable over the document to be read; A document reading device comprising an optical path changing means for guiding the divided reflected light to an observation window provided on the surface of the casing. (2) The optical path changing means is constituted by a rotationally adjustable reflecting mirror.
Manuscript reading device as described in section.