JPH01219829A - Flat bed scanner device - Google Patents

Abstract

PURPOSE:To correctly read original information even if it is not a sheet original by placing the original on the reading head plane and bonding an artificial original plane with a scan face plate when information on the original having a shape suited to the reading head plate. CONSTITUTION:When information on the original 1 is read, which has a shape suited to that of the reading head plate 21, it is placed on the reading head plate 21, and a reading adaptor device 10 is set to adhere the artificial original plate 22 to the scanning face plate 11. Information on the original 1 is correctly transmitted to the scan face plate 11 by setting the reading adapter device 10. Therefore, information on the original 1 is correctly read by means of the flat bed scanner device 10.

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] The present invention relates to a flat bent scanner device used in copy machines and facsimile machines.

The purpose is to enable accurate reading of document information even in documents other than sheet documents.

A transparent and flat scanning plate on which the original is placed, an illumination light source that illuminates the original, and a sensing section that senses the brightness information of the original.
A flat bent scanner device configured to read document information is equipped with a driving device that shifts the relative positional relationship between the sensing section and the scanning surface plate, and is configured to read document information. A reading adapter device is provided which includes a reading head surface having a compatible shape, a pseudo original surface having a flat shape, and an image guide section that transmits an optical image read by the reading head surface to the pseudo original surface, and When reading document information of a document having a document shape that matches the reading head surface, the document is placed on the reading head surface and the pseudo document surface is brought into close contact with the scanning surface plate. .

[Industrial application field]

The present invention relates to a flatbed skiving device used in copy machines and facsimile machines, and more particularly.

The present invention relates to a flatbed scanner device that can accurately read document information even when the document is a thick book.

Since the manuscript in the copy machine is often a book,
Flat bent scanner devices have long been used as a scanner method for reading document information. On the other hand, in the case of facsimile as well, since it would be convenient to be able to directly transmit book document information in addition to sheet documents, a scanner system using a flatbed scanner device is being adopted.

In such a flat bent scanner device, it is necessary to devise a device configuration so that the document information can be read accurately without much effort even when the document is a thick book.

[Conventional technology]

FIG. 7 shows a configuration diagram of a conventional flatbed scanner device applied to facsimiles. In this diagram,
la is an open book that becomes a manuscript.

11 is the original side of book 1a! 12 is an illumination light source that illuminates the original surface of the book 1a through the scanning surface plate 11.

13a is a line image sensor that converts the brightness information of the document surface of the book 1a illuminated by the illumination light fx12 into a corresponding electric signal; 14 is the relative positional relationship between the scanning face plate 11 and the line image sensor 13a; This is a drive device that shifts the position over time. The scanning face plate 11, the illumination light source 12, the line image sensor 13a, and the driving device 1
4 constitutes a flat vent scanner device.

The moving direction of the scanning surface @11 or the moving direction of the line image sensor 13a and the scanning direction of the line image sensor 13a are set so as to be approximately perpendicular to each other.

In the flatbed scanner device configured in this way, the driving device 14 moves the scanning face plate 1 as the 9 hours elapse.
1 or by moving the line image sensor 13a in parallel, the scanning face plate 11 and the line image sensor 13a can be moved in parallel.
The line image sensor 13a reads the brightness information of the document surface of the book 1a that is moved according to this operation at predetermined intervals, thereby reading the document information. It is configured so that it can be read.

Although the conventional technology of a flatbed scanner device has been described here with an example applied to a facsimile machine, the conventional technology of a flatbed scanner device applied to a copy machine will be described.

Since there is no change in the basic configuration except that the line image sensor 13a is replaced with a photosensitive drum or the like, the explanation will be omitted.

[Problem to be solved by the invention]

As shown in FIG. 7, in the conventional flat bent scanner device, if one of the sheets 1a is thick, a chevron-shaped space (α) will be created when the page is opened.
The document information will be read in a distorted manner in the areas that cannot come into close contact with the scanning face plate 11, and the illumination light il! There was a problem in that the light from the X12 did not reach the image, so it would be read as black. To solve this problem, it would be possible to prevent the space (α) from occurring by pressing one piece 1a against the scanning face plate 11, but this would put a heavy burden on the operator. There is a drawback. Especially when it comes to documents that require a long time to read, such as facsimiles,
The current situation is that such work is virtually impossible.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a flatbed scanner device that can accurately read document information even on documents other than sheet documents.

(Means for solving problems) FIG. 1 is a diagram explaining the principle of the present invention.

In the figure, 1 is a document other than a sheet document, such as a book, and is a document whose document information is to be read. Reference numeral 11 denotes a scanning plate made of a transparent and flat plate such as a glass plate, on which a sheet original is placed when the original is a sheet original. Reference numeral 12 denotes an illumination light source that illuminates the original 1 via the scanning plate 11, for example. Reference numeral 13 denotes a sensing unit, such as a line image sensor, which senses brightness information of the original 1. 14 is the scanning face plate 11 and the sensing section 13
This is a drive device that shifts the relative positional relationship between the two over time. The scanning face plate 11, the illumination light source 12, the sensing section 13, and the driving device 14 constitute a flatbed scanner device 10. Reference numeral 20 denotes a reading adapter device composed of an optical fiber bundle, which includes a reading head surface 21 consisting of an end face of an optical fiber bundle formed in a shape that matches the shape of the original document 1, and an optical fiber bundle formed in a flat shape. It includes a pseudo-document surface 22 consisting of an end surface, and an image guide section 23 that transmits brightness information read by the reading head surface 21 to the pseudo-document surface 22 without destroying its optical image.

[Effect]

According to the present invention, when reading the document information of the document 1 having a document shape that matches the shape of the reading head surface 21,
This document 1 is placed on the reading head surface 21, and
The reading adapter device 10 is placed so that the pseudo original surface 22 comes into close contact with the scanning plate 11. By setting the reading adapter device 100, the document information of the document 1 is accurately transmitted to the scanning face plate 11, so that the document information of the document 1 is accurately read by the flat bent scanner device 10.

〔Example〕

Hereinafter, the present invention will be explained in detail according to examples.

FIG. 2 is a block diagram of an embodiment of the reading adapter device 20 constituting the present invention. The reading adapter device 20 shown in FIG. 2 is intended to be used for a document that uses an opened book 1a as described in FIG. 7.

FIG. 2(A) shows the external appearance of the reading adapter device 20. As shown in this figure, the reading adapter device 20
The reading head surface 21 is formed with a shape that matches the shape of the document surface of the opened book 1a, and the suspect original is formed with a planar shape that becomes the bottom surface when the opened book 1a is placed. It is configured to form a three-dimensional shape defined by a surface 22.

The internal structure of the reading adapter device 20 having such an external appearance is shown in FIG. be.

As shown in this figure, the reading adapter device 20 is.

Image guide section 23 consisting of aligned optical fiber bundles
The reading head surface 21 and the pseudo original surface 22 are formed by the end surface of the optical fiber bundle of the image guide section 23. be. The image guide section 23 is configured to transmit the brightness information input to the reading head surface 21 to the pseudo original surface 22 without destroying its optical image. The reading adapter device 20 having such a configuration can be manufactured by converging a large number of optical fibers, welding them with heat or fixing them with resin or the like, and then polishing them. In addition.

24 in the figure is a resin part where no optical fiber bundle is present.

This resin part 24 is formed because the circumference of the reading head surface 21 is longer than the length of the pseudo document surface, but it is not a part that has any essential meaning, but is just a space that is not filled with resin. This is a part that may be.

In order to read the manuscript of the book 1a opened using the reading adapter device 20 configured as described above with the flat bent scanner device, as shown in FIG. It is mounted so as to be in close contact with the face plate 11, and the original surface of the opened book 1a is placed on the reading head surface 21 of the reading adapter device 20. When the reading adapter device 20 is inserted in this manner, as also shown in FIG.

This reading adapter device 20 is properly inserted into the space (α) explained in FIG. 7, and the opened page of the book 1a is
Due to the optical transmission characteristics of the optical fiber, the brightness information of the original document is transmitted from the reading head surface 21 to the pseudo original surface 22 via the image guide section 23 without destroying the original information. Therefore, the line image sensor 13a is
By reading the brightness information of the pseudo-document surface 22, which is moved in accordance with the drive operation of the drive device 14, at predetermined intervals, the document information of each document 1a can be read accurately without distortion. .

Note that since there is no optical fiber bundle in the resin part 24, the manuscript information of the book 1a corresponding to this part cannot be read, but the part of the book 1a corresponding to this part is usually a blank space. There is no problem from this. Also,
The width of the reading adapter device 20 does not need to correspond to the width of the opened book 1a;
If the degree of close contact between the two is not a major problem in reading accuracy of document information, there is no need to extend the hem of the reading adapter device 20 to such a degree of close contact.

Next, another embodiment of the present invention will be described.

FIG. 4 is a block diagram of another embodiment of the reading adapter device 20 constituting the third invention. The reading adapter device 20 shown in FIG. 4 is intended to be used for a document containing a book 1a whose pages are not opened.

FIG. 4(A) shows the external appearance of the reading adapter device 20. As shown in this figure, the reading adapter device 20 of this embodiment includes a document side unit 31 that contacts the surfaces of three documents and collects document information, a scanner side unit 32 that comes in close contact with the scanning face plate 11, and Original side unit 3
1 and a scanner-side unit 32. Here, this optical fiber cable 33 corresponds to the image guide section 23 of the embodiment shown in FIG.

The internal configuration of the reading adapter device 20 having such an appearance is shown in FIG. 4(B). FIG. 4(B) is a longitudinal sectional view of the reading adapter device 20, showing its internal structure.

As shown in this figure, the document side unit 31 is constructed by laminating layers of aligned optical fiber bundles 34 in the transverse direction, and the end face of the stacked optical fiber bundles 34 is It is configured to have a read head surface 21 to be formed. Here, this reading head surface 21 is designed to facilitate insertion into the two books 1a.

Preferably, the document side unit 31 is inclined so that it becomes thinner at the leading end. Furthermore, this document side unit 3
Reference numeral 1 includes a surface light source unit 35 that illuminates the surface of the document via an optical fiber bundle 34. Scanner side unit 32 paired with this document side unit 31
is constructed by laminating 340 layers of similarly aligned optical fiber bundles in the transverse direction, and the pseudo original surface 22 that will be formed by the end face of this laminated optical fiber bundle 34 is It is configured to have. The optical fiber cable 33 is configured to transmit the brightness information input to the reading head surface 21 to the pseudo original surface 22 without destroying its optical image.

In order to read the manuscript of the closed book 1a with the flat bent scanner using the reading adapter device 20 configured as described above, as shown in FIG.

The scanner side unit 32 is attached so that its pseudo original surface 22 is in close contact with the scanning face plate 11, and the document side unit 31 is attached to the book 1a with its reading head surface 21 closed.
It is inserted so that it is in close contact with the surface of the original. When the reading adapter device 20 is set in this way, the brightness information of the closed book la is transferred from the reading head surface 21 to the 'optical fiber cable 3' due to the optical transmission characteristics of the optical fiber.
3 to the pseudo-original surface 22. Therefore, the line image sensor 13a is transferred to the pseudo-original surface 22 through the driving operation of the drive device 14. By reading the brightness information at predetermined intervals, it is possible to accurately read the information on the nine LA documents without distortion even when the document is closed.

In FIG. 6, two document side units 3-1 of the reading adapter device 20 shown in FIG. 4 are pasted together.

This is an example of the use of a reading adapter device 20 that is capable of reading document information on opposite document surfaces of a closed book 1a at one time. If the reading adapter device 20 is configured in this way,
The manuscript information of book 1a can be read extremely conveniently.

In explaining the embodiment, reading of document information was explained according to a flat-bent scanner device used in facsimile machines, but the flat-bed scanner device of the present invention is not limited to facsimile machines, and can be applied as is to copy machines. It is. Further, the arrangement density of the optical fibers on the reading head surface 21 and the pseudo-document surface 22 can be determined as appropriate within a range that does not cause any practical problem in reading accuracy of document information.

〔Effect of the invention〕

As described above, according to one aspect of the present invention, even if the original is not a sheet original, the information on the original can be read accurately and without becoming black using a flatbed scanner device. Furthermore, depending on the aspect of the present invention, it becomes possible to read manuscript information even if the book is closed.

[Brief explanation of the drawing]

FIG. 1 is a diagram explaining the principle of the present invention. FIG. 2 is a configuration diagram of an embodiment of the reading adapter device. FIG. 3 is an explanatory diagram of how the reading adapter device of FIG. 2 is used. FIG. 4 is a configuration diagram of another embodiment of the reading adapter device. FIG. 5 is an explanatory diagram of the usage state of the reading adapter device of FIG. 4. FIG. 6 is a configuration diagram of an embodiment of a double-sided reading adapter device. FIG. 7 is a diagram showing the configuration of a conventional flatbed scanner device. In the figure, 10 is a flatbed scanner device, 11 is a scanning plate, 12 is an illumination light source, and 13 is a sensing section. 13a is a line image sensor, and 14 is a drive device. 20 is a reading adapter device, 21 is a reading head surface, 2
2 is a pseudo original surface, and 23 is an image guide section. 31 is a document side unit, 32 is a scanner side unit, 3
3 is an optical fiber cable, and 35 is a surface light source unit.

Claims (1)

[Claims] A transparent and flat scanning plate (11) on which a document is placed, an illumination light source (12) that illuminates the document, and this illumination light source (12).
a sensing section (13) that senses the brightness information of the original illuminated by the scanning surface plate (1);
A flatbed scanner device (10) configured to read document information on a document by comprising a drive device (14) that shifts the relative positional relationship between the optical fiber and the optical fiber (1) over time. A reading head surface (21) consisting of an optical fiber bundle end face formed from a bundle and formed with a shape matching the original shape, and a pseudo original surface (22) consisting of an optical fiber bundle end face formed with a flat shape. A reading adapter device (2) comprising an image guide section (23) that transmits the brightness information read by the reading head surface (21) to the pseudo original surface (22) without destroying its optical image;
20), and when reading the document information of a document having a document shape adapted to the reading head surface (21), this document is placed on the reading head surface (21) and the pseudo document surface (22) is prepared. ) in close contact with the scanning face plate (11) to read document information.