JPS61296852A - Information reader - Google Patents

Abstract

PURPOSE:To confirm a read surface of an original set on an original platen and to facilitate the confirmation of read contents and the position adjustment of a readout area by providing a display window for the confirmation of the read surface of the original and guiding and projecting the optical image of the read surface of the original on the display window through an optical system. CONSTITUTION:The display window 14 made of a transparent glass plate is installed on the side of an end of the top surface part of a device housing 10, reflecting mirrors 11 and 12 are arranged below the window 14 and original platen 20 respectively, and a reflecting mirror 13 is arranged in the device housing 10 between the display window 14 and original platen 20. Those reflecting mirrors 11-13 reflect the optical image of the read surface of the original 4 set on the original platen 20 and projects it on the window 14 in a specific form. The reflecting mirrors 11 and 12 turn around turning shafts 11a and 12a as shown by arrows A and B to vary in angle of rotation. For example, when the angles of reflection of the reflecting mirrors 11 and 12 are set to 45 deg. to the surface of the original platen 20, the optical image of the read surface of the original 4 set on the original platen 20 is reflected successively and guided to the display window 14, where the image is projected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement in a so-called stationary original type information reading device.

[Technical background of the invention]

Conventionally, as shown in FIG. 5, this type of apparatus has conventionally installed a transparent original platen 2 on the upper surface of a housing 1, and provided a reading section 3 below the original platen 2 in the housing 1. ,
There is an apparatus in which a document 4 is set face down on the document table 2, and the surface to be read of the document 4 is read and scanned by the reading section 3 to obtain written information on the document 4. Note that the reading unit 3 uses an illumination light 1113) and this illumination light source 3.
), the optical image of the surface to be read of the document 4 illuminated by A scanning mechanism (not shown) serving as a driving source performs main scanning on the surface to be read of the original 4 while sub-scanning in the direction of arrow Y. Such a device can read documents in a stationary state without transporting the document into the device using rollers or the like, so it is extremely suitable for reading important documents that must not be damaged or thick books.

[Problems with background technology]

However, in this type of conventional device, the original [4] is placed face down on the document table 2, so it is not possible to check the contents of the side to be read of the document while it is set, and when checking The checking operation was troublesome because the set original had to be turned over and checked. In addition, if it has a partial reading function of the surface to be scanned, check the setting condition such as whether the area to be read is definitely within the specified reading range in the set state, and whether it is not unnaturally tilted. Since it is not possible to confirm this, reading errors are likely to occur, and as a result, the reading operation requires a lot of time and effort.

[Purpose of the invention]

The present invention makes it possible to check the surface of the document to be scanned even when it is set, so that the scanned content can be checked and the position of the scanned area can be easily and reliably adjusted, thereby preventing misreading and improving operability. The purpose is to provide an information reading device that can be improved.

[Summary of the invention]

In order to achieve the above object, the present invention provides a display window for checking the surface to be read of the document, and guides an optical image of the surface to be read of the document set on the document table to the display window using an optical system and projects the image. This is how it was done.

[Embodiments of the invention]

1 and 2 show the configuration of an information reading device according to an embodiment of the present invention, FIG. 1 being a plan view thereof, and FIG. 2 being a side sectional view thereof.

A document table 20 made of a transparent glass plate is disposed at one end of the upper surface of the apparatus housing 10, and a reading scanning section 3 is disposed below the document table 20. This reading/scanning section 3 is equipped with a line sensor 34 consisting of a solid-state lff1 device, as previously described in FIG. In addition, the document table 20
A plurality of lamps 6a, 6b and 7a to 7C are arranged on two adjacent sides of the lamp. These lamps 6a.

8b and 7a to 7C, those corresponding to the reading range designated by a reading range designation switch (not shown) are lit, thereby displaying the designated reading range on the document table 2o. Note that 5 is a document holder that can be opened and closed by a hinge mechanism 5a.

On the other hand, a display window 14 made of a transparent glass plate is installed on the other end side of the upper surface of the device housing 10, and a display window 14 made of a transparent glass plate is installed at a lower position of the display window 14 and a lower position of the document table 20, respectively. 01 mirrors 11 and 12 are arranged, and the device housing 1
An anti-I8 mirror 13 is installed between the display window 14 and the original platen 20 in 0.

These reflecting mirrors 11, 12, and 13 reflect the optical image of the surface to be read of the document 4 set on the document table 2o and project it on the display window 14 in a predetermined form.
Of A11.12.13, the reflecting mirrors 11.12 are rotated as indicated by arrows A and B around rotational axes 11a and 12a, respectively, so that their reflection angles can be changed. Note that the rotation operation of these reflecting mirrors 11 and 12, that is, the setting of the reflection angle, is performed by, for example, a plunger mechanism (not shown). Further, 14a is a boundary line of the designated reading range displayed on the display window 14.

With such a configuration, by operating the display mode designation switch (not shown), the reflection angles of the mirrors 11 and 12 can be set, for example, to 45 degrees with respect to the 20 surfaces of the original platen, as shown in FIG. 3(a). When set to , the original 4 set on the original platen 20
As shown in FIG. 3(a), the optical image of the surface to be read is reflected by the reflecting mirror 11 and the mirror 12, and is guided to the display window 14 and displayed. At this time, since the optical image of the surface to be read is reflected twice by the reflecting mirrors 11 and 12 in total, the optical image projected on the display window 14 is as shown in FIG.
), it becomes a normal image. Therefore, by viewing the optical image of the original 4 displayed on the display window 14, the operator can easily and clearly know the contents of the surface to be read of the original 4 set on the original table 20.

However, if the optical image of the surface to be read of the document 4 is displayed as a normal image in this way, when an attempt is made to adjust the setting position of the document 4, the image displayed on the display window 14 will be displayed in the state of the document 4 on the document table 20. This makes it difficult for the operator to make adjustments because the machine moves in the opposite direction to the direction of movement of the machine. Therefore, when adjusting the setting position of the original 4 in this way, operate the display mode designation switch and set the reflection l! ! 11.1
The reflection angle of 2 is set to an arbitrary angle smaller than 45° as shown in FIG. 4(a). Then, the manuscript table 20
The optical image of the surface to be read of the original 4 set in the is shown in FIG.
As shown at the mouth of a), the light is reflected by the reflecting mirror 11, passes through the reflecting mirror 13, is reflected by the mirror ff12, and is guided to the display window 14, where it is displayed. That is, the optical image of the original 4 is captured by the reflecting mirror 1.
1, 13, and 12, resulting in a total of three reflections.

Therefore, the optical image is displayed on the display window 14 in a mirror image state as shown in FIG. 4(b). When the optical image of the original 4 is displayed as a mirror image in this way, the displayed image on the display window 14 moves in the same direction as the moving direction of the original 4 on the original platen 20.
The operator only has to move the document 4 on the document table 20 in the same direction as the moving direction while visually viewing the displayed image on the display window 14.

For example, as shown in FIG. 4(b), the setting position of the original 14 is shifted from the designated reading area C displayed by the lamps 6a and 7b, and in order to accommodate it within the designated reading area C, it is necessary to display the The position of the document 4 may be moved toward the upper right in the figure in accordance with the position of the displayed image on the window 14.

In this embodiment, since the optical image of the surface to be read of the document 4 set on the document table 20 is displayed on the display window 14, the optical image of the surface to be read of the document 4 set face down on the document table 20 is displayed. You can easily and reliably check the surface as it is, and as a result, you can definitely prevent problems such as reading a page other than the desired page or reading a page outside the specified reading range. can do. In addition, in this embodiment, the optical image of the surface to be read of the document 4 set on the document table 20 is switched between a normal image state and a mirror image state and displayed on the display window 14, so that the mirror image is displayed during position adjustment. Adjustment can be easily and quickly performed with good operability by setting the original 4 to the state shown in FIG. Contents can be checked smoothly and accurately without making them feel unnatural.

Note that the present invention is not limited to the above embodiments. For example, in the above embodiment, the optical image of the document 4 is displayed on the display window 14 with the same size, but a lens is inserted into the optical path of the optical image, and the optical image is reduced by this lens and displayed on the display window 14. 14 may be displayed. In this way, the size of the display window 14 can be reduced, and the device can be made smaller accordingly. Alternatively, the optical image may be enlarged using a lens and displayed on the display window 14. In this way, for example, even if the characters on the document are small, it becomes easy to read the characters. Furthermore, a prism may be used instead of a reflector,
Alternatively, the optical image may be reduced in size using a lens before being reflected by a reflecting mirror, and then returned to its original size using a lens before being displayed on a display window. In this way, the size of the reflecting mirror can be reduced, thereby making it possible to downsize the device. In addition, the positions and configurations of the document table, the display window, the configuration of the optical system, etc. can be modified in various ways without departing from the gist of the present invention.

〔Effect of the invention〕

As described above in detail, according to the present invention, a display window is provided for checking the surface to be read of the document, and an optical image of the surface to be read of the document set on the document table is guided to the display window and projected by an optical system. By doing this, it is possible to check the side of the document to be scanned even when it is placed on the document table, which allows you to easily and reliably check the scanned content and adjust the position of the reading area, thereby preventing misreading. Also, it is possible to provide an information reading device that can improve operability.

[Brief explanation of drawings]

1 and 2 show the configuration of an information reading device in an embodiment of the present invention, FIG. 1 is a plan view thereof, and FIG.
The figure is a side sectional view, FIG. 3(a). (b) and FIG. 4 (a>, (b) are schematic diagrams for explaining the operation of the apparatus shown in FIG. 1 and FIG. 2, respectively, and FIG. 5 is an example of an information reading device for a stationary document type. 3... Reading scanning unit, 4... Document, 5... Document holder, 6a, 6b, 7a to 7C... Lamp for displaying specified reading range, 10...・Device housing, 11.12.13...
Reflector, 14...display window. 3 II (a) ] 4 3rd WJ (b) Figure 4 (a) Figure 4 (b) Figure 5

Claims (5)

[Claims] (1) In an information reading device in which a document is set face down on a translucent document table, and the surface to be read on the document table is read and scanned by an optical reading unit disposed below the document table, 1. An information reading device comprising display windows arranged in parallel on a document table, and an optical system that projects an optical image of a surface to be read of a document set on the document table onto the display window. (2) The optical system has an even number of reflective optical systems, and these reflective optical systems reflect an optical image of the surface to be read of the document and display it on the display window as a normal image that is the same as the above optical image. An information reading device according to claim (1). (3) The optical system has an odd number of reflective optical systems, and the optical image of the surface to be read of the document is reflected by the reflective optical system and is projected onto the display window as a mirror image that is left and right opposite to the optical image. An information reading device according to claim (1). (4) The optical system has a switching means for switching the number of reflective optical systems used to reflect the optical image of the document to an even number or an odd number, and this switching means changes the display form of the optical image of the document to a normal image. The information reading device according to claim 1, wherein the information reading device is selectively set to a mirror image or a mirror image. (5) The optical system has a lens, and the lens reduces or enlarges the optical image of the document and projects it on the display window. The information reading device described in .