JPS60169270A - Picture reader - Google Patents

Abstract

PURPOSE:To copy efficiently and correctly a page of a book even that surrounding the neighborhood of a binding section supporting a bound original (book) upward in a way opened as nearly V-shape. CONSTITUTION:The book original 2 is placed on a book platen 1, the book platen 1 is elevated up to the reading position, and when pages 3a, 3b to be copied are adhered closely onto a platen glass sheet 4, the pages 3a, 3b to be copied are pressed from the upper direction by the platen glass 4 so as to be made flat. When flash lamps 5a, 5b are lighted, a reflected image of the pages 3a, 3b to be copied is formed by image forming lenses 8a, 8b and the image is detected photoelectrically by solid-state image pickup elements 9a, 9b. The detected signal is stored in a storage section 11 via picture information signal processing sections 10a, 10b, fed to a printer further via an operation processing section 12 and an information output section 13 and a copy of the picture is outputted.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to an image reading device used in a copying machine, etc.
In particular, the present invention relates to an image reading device suitable for reading pages of bound books.

(Prior Art) Various copying machines have been provided in the past, but when copying the pages of a bound book with a conventional copying machine, the book is turned face up and the page to be copied is opened, and then the page to be copied is opened. I turned the book over so that this page was in close contact with the platen glass. However, this method is very troublesome, especially when there are a large number of pages to be copied, as the process of turning the book over and over again is very tedious. In addition, especially when the book is thick, the pages near the binding part are greatly curved and do not come into close contact with the platen glass, and this part often becomes distorted or cannot be copied. Furthermore, when the book is turned over and the copied pages are pressed against the platen glass as described above, the binding of the book is often damaged.

(Object of the invention) The present invention has been made in view of the above circumstances! To provide an image reading device which is capable of efficiently copying the pages of a bound book and correctly copying the vicinity of the binding part, and which does not damage the book.

(Structure of the Invention) An image reading device of the present invention includes a book mounting table that supports a bound manuscript book in an upwardly opened state in a substantially V-shape, and a manuscript book placed on the book mounting table. A platen glass having a cross-sectional shape of a cross section with a transparent portion on at least one page side, which holds down the opened left and right pages from above, and an illumination light source that illuminates the read page held by the transparent portion through the platen glass. , an imaging lens and an image sensor that form a reflected image of the illuminated read page.

It consists of a reading section configured with an imaging means such as an image pickup tube, and an image information signal processing section that processes electrical image information signals output from the imaging means. A copy of the page can be obtained by inputting the signal into a suitable known printer.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

The figure shows an image reading device according to an embodiment of the present invention. As will be described later, the apparatus of this embodiment is configured to be combined with, for example, a printer to constitute a copying machine.

The book mounting table 1, which has a generally V-shaped cross-sectional shape that opens upward, is moved between the reading position shown by the solid line in the figure and the set shown by the imaginary line by an automatic lifting device equipped with a driving means or a manual lifting device. It can be moved up and down between positions. The original book 2 to be copied is placed on the book holder 1 at the set position with the copy pages 3a and 3b opened. When placed on the book placing table 1, the original book 2 opens upward in a substantially V-shape, and the vicinity of the binding portion does not curve significantly.

A transparent platen glass 4 with a cross section shaped like a square is arranged at a position that is in close contact with the copying pages 3a and 3b when the book mounting table 1 is raised to the reading position. Flash lamps 5a and 5b are arranged to emit illumination light toward each half of the platen glass 4. The light emitted from each of the flash lamps 5a and 5b is efficiently irradiated in the direction of the platen glass 4 by reflecting plates 5a and 5b, respectively.

Further, two sets of reading sections 7a and 7b are provided on each half of the platen glass 4 so as to face each other. These reading units 7a and 7b are each composed of imaging lenses 8a and 8b facing the platen glass 4, and solid-state image sensors 9a and 9b such as COD (charge coupled device) and MOS.

As described above, the original book 2 is placed on the book placing table 1, and the book placing table 1 is raised to the reading position and the copying page 3a is placed.
, 3b are brought into close contact with the platen glass 4, the copy pages 3a, 3b are pressed down from above by the platen glass 4 and become flat. When the flash lamps 5a, 5b are turned on, reflected images of the copy pages 3a, 3b illuminated through the platen glass 4 are formed by the imaging lenses 8a, 8b, and these images are captured by the solid-state image sensors 9a, 9b. is detected photoelectrically by

The electrical image information signals Sla and S1b output by the solid-state imaging probe 9a19b are input independently to the image information signal processing units 10a and 10b, and the images processed by these image information signal processing units 10a and 10b are Signal S2a
, S2b are stored in the storage unit 11. The image signal S3 output from the storage section 11 is input to the arithmetic processing section 12,
The image signal S4 subjected to the decoding process is input to the image information output section 13. The output S5 of the image information output section 13 is inputted as a printer drive signal carrying the image of the copy pages 3a and 3b to a printer 14 such as an inkjet printer or an l1vl+electronic printer.
Copies of the images of the copy pages 3a and 3b are output from.

If a display device such as a CRT and an input device are connected to the arithmetic processing section 12, copy pages 3a, 3 can be copied by operating the input device while looking at the display device.
It is possible to perform a number of edits and modifications to the image b, such as layout, deletion, page entry, and creation of margins.

When the image reading of the copy pages 3a and 3b is completed as described above, the book placing table 1 is lowered to the set position, and the original book 2 is placed on the book placing table 1, and the page is turned over to create a new page. A new copy page can be opened, and the image of this new copy page can be read in the same manner as described above.

In the above embodiment, the left and right pages of the manuscript book 2 are 2.
Although the images are read simultaneously by a set of reading sections 7a and 7b, it is also possible to provide only one set of reading sections and read the images one page at a time. In this case, the platen glass may be made transparent only on the side of the page where the image is read, and the other page sides may be made of opaque glass or a material other than glass (in the present invention, such a platen glass is also used). (referred to as "platen glass"). However, in a device like the above-mentioned embodiment device, which has independent reading sections for left and right pages, there is no need to change the posture of the original book depending on whether the copy page is on the right or left side.
It is also more preferable because the time required for image reading can be shortened.

Furthermore, instead of the solid-state image sensor as described above, an image pickup tube such as a vidicon may be used. Furthermore, book mounting table 1
If the right and left parts of the center are made relatively movable in the vertical direction (vertical direction) via elastic members such as springs, the number of pages on the right side and the number of pages on the left side of the opened manuscript book 2 can be changed. Each copy page 3a, even if the numbers differ significantly (i.e., if opened near the beginning or end of the volume)
.

3b can be properly brought into close contact with the platen glass 4, which is preferable.

The image reading device of the present invention can be used not only in a copying machine like the device in the above embodiment, but also as a transmission image reading device for, for example, a facsimile. In this case, the pages of a bound book can be transmitted as they are, eliminating the need for the conventional troublesome work of copying the transmission page once and then transmitting the copy. Note that it is obvious that the apparatus of the present invention can also read a cut-sheet original by setting it on the book mounting table.

(Effects of the Invention) As described in detail above, the image reading device of the present invention reads images with the manuscript facing upward in a V-shape, so that the vicinity of the binding portion of the page does not curve significantly. Therefore, the area around the binding area can be read well without damaging the book. Furthermore, since it is possible to turn the pages of the original book while it is placed face up on the book holder, the page turning operation is much easier than in the past. Furthermore, since the apparatus of the present invention uses an imaging means that photoelectrically reads the original image to obtain an electrical image signal, the read image can be edited and modified by electrically processing this image signal. This is easily possible.

[Brief explanation of drawings]

The figure is a schematic diagram showing an apparatus according to an embodiment of the present invention. 1... Book mounting table 2... Original book 3a, 3b... Copy page 4... Platen glass 5a, 5b... Flash lamp (illumination light source) 7a1
7b...Reading section 8a, 8b...Imaging lens 9a, 9b...Solid-state image sensor

Claims (1)

[Claims] A book mounting table supports a bound manuscript book in an open state facing the information in a substantially V-shape, and presses from above the enclosed left and right pages of the manuscript book placed on the book mounting table. A platen glass having a substantially V-shaped cross section with at least one page side being a transparent portion, an illumination light source that illuminates the read page held by the transparent portion through the platen glass, and forming a reflected image of the illuminated read page. a reading section comprising an imaging lens and an imaging means for photoelectrically reading the reflected image formed by the imaging lens;
and an image reading device comprising an image information signal processing section that processes an electrical image information signal output from the imaging means.