JPH11234486A - Original reader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a reader to read a spread book original in a correct page sequence even when the book original is written from top to bottom or from left to right by selecting the read sequence of the spread original from left to right or from right to left. SOLUTION: The proposed reader is provided with a read means that reads an original, a prescribed area of one original is defined to be a left page and some other prescribed area is defined to be a right page, and the read means reads each of the left page area and the right page area of the one original respectively. In this case, the reader has a means that selects the reading of the original in the sequence from the left page area and then the right page area or vice versa.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an original reading apparatus used for a copying machine, a facsimile apparatus, a scanner apparatus, and the like, and more particularly, to an apparatus for separately reading left and right pages of a spread original such as a book original. The present invention relates to a document reading device.

[0002]

2. Description of the Related Art A document reading device mounted on a copying machine or a facsimile machine has a function of "spreading document reading" as means for reading a spread document such as a book or a document stapled by a stapler. There is. With a single operation of the start key, a document placed on the contact glass is read first to read the left half of the double-page spread document and generate an image, then read the right half of the same document and generate the image. By doing so, two pages are read from one document, which is a convenient function when reading a spread document such as a book or a document stapled by a stapler.

[0003] Further, the system is provided with a function of reading a two-page spread original such as a book and an automatic page turning function, and reads a specified page of a book original, and sequentially turns an image of a specified range of pages while sequentially turning over a specified range of pages. A book reading device that sequentially reads a book, and a book document image forming apparatus that includes the book reading device, automatically turns a page of a book and reads an image, and forms the read image on a recording medium such as transfer paper. Have been proposed by the present applicant (JP-A-7-110528, JP-A-7-110529).
JP-A-7-162616, etc.). Although this book original reading apparatus and book original image forming apparatus are epoch-making in that reading and copying of a book original are automatically performed, since they are provided with a dedicated page turning mechanism, a document reading mechanism, and the like, The device configuration is complicated and expensive compared to a general document reading device.

[0004]

By the way, with respect to the page order of two pages of a two-page spread document, in the case of a vertically written book, the right page is first and the next page is the left page. On the other hand, in the case of a horizontally written book, the left page is first, and the next page is the right page. Therefore, if the original face of the original is placed directly on the contact glass (the book is turned over) in order to perform double-page reading of the original, if the original is read in the page order, It is necessary to read in the order of left to right, and for horizontal writing to right to left.

However, in the spread original reading function provided in a conventional original reading device mounted on a copying machine, a facsimile, or the like, since the reading order of the spread original is generally read from left to right, vertical writing is performed. There is a problem that even if the book is read in the page order, the page order is reversed for the horizontally written book, especially when performing the double-page reading of a large number of pages. If reading is performed later, the page order is reversed every two pages. Here, if a device such as a copier that outputs read images on the spot is used, the page order can be aligned at the time of output. However, in the case of facsimile, a document reading device (transmitter) on the transmitting side and a receiving device on the receiving side can be used. Since the output device (receiver) is different, it is necessary to provide a means for communicating such a spread document in communication, and it is necessary for the receiver to cope with it, so that it is difficult to rearrange the page order at the time of output.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has an advantage in that when reading a two-page spread original, it is possible to select between reading in the order of left → right or reading in the order of right → left. SUMMARY OF THE INVENTION It is an object of the present invention to provide a document reading apparatus capable of reading a double-page spread document in a correct page order in both vertical writing and horizontal writing.

[0007]

As means for achieving the above object, the invention according to claim 1 includes reading means for reading a document, and a certain area of one document is defined as a left page, Another constant area as the right page,
By the reading means, in a document reading apparatus that reads each area of the left page area and the right page area for one document, as the reading order of the document,
This configuration has a means for reading in both the order of reading the left page area first and then reading the right page area later, and reading the right page area first and reading the left page area later. That is, in the document reading apparatus according to claim 1, as a reading order of the document in the double-page spread reading, either of reading the left page first, then reading the right page, reading the right page first, and then reading the left page. , It is possible to read the two facing pages of the document in any order.

According to a second aspect of the present invention, in the original reading apparatus according to the first aspect, the left page area is read first and the right page area is read later, or the right page area is read first and the left page area is read later. It is configured to include a means for selecting whether to read the data. That is, claim 2
When reading an original in double-page spread, the original reading device must be able to select whether to read the left page first, then the right page, or read the right page first, and then read the left page By
It is possible to read the two facing pages of the document in any order.

According to a third aspect of the present invention, in the original reading apparatus according to the first aspect, the left page area is read first, and the right page area is read later, depending on whether the original is a vertical writing original or a horizontal writing original. Alternatively, means for selecting whether to read the right page area first and then read the left page area later is provided. That is, in the original reading apparatus according to the third aspect, when reading an original by double-page original reading, in the case of a vertically written original, the left page is read first, then the right page is read, and in the case of a horizontally written original, the original is read first. By reading the right page and then reading the left page, the user can correctly determine whether to read the left or right page first, regardless of whether the document is vertical or horizontal. Two-page spread originals can be read in page order.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail based on illustrated embodiments. FIG. 1 is a schematic configuration diagram of a facsimile apparatus provided with a document reading apparatus according to the present invention. The facsimile apparatus reads an image of a spread document 2 such as a sheet document or a book placed on a contact glass 1. A facsimile control unit 4 including a device 3, a page memory 5, a compressor 6, a modem 7, and a control processing unit (CPU), a memory, a clock, and various control circuits (not shown), and an operation unit 8 It is provided with a configuration. Although not shown, the facsimile apparatus includes an output device that demodulates a signal received via the modem 7 into an image signal and outputs the signal to a sheet at an image forming unit (not shown).

The operation of the facsimile apparatus from reading the original to the transmission and the operation from the reception to the output of the image are controlled by an arithmetic processing unit (CPU) of the facsimile control unit 4. The image of the original 2 placed thereon is read by the original reading device 3, and is first stored in the page memory 5 in the facsimile control unit 4. After that, the image in the page memory 5 is compressed by the compressor 6 and transferred to the modem 7. The modem 7 modulates the transferred image signal and transmits the modulated image signal to the receiver (output device) of the facsimile apparatus on the communication partner side. A display screen 9 and various keys 10 are arranged on the operation unit 8, and perform key input from the user and display a guidance screen for the user.

FIG. 2 is a schematic configuration diagram showing an example of the configuration of a document reading apparatus. This document reading apparatus has a contact glass 1 on which a document 2 is placed, a light source 16 and a first mirror 17, and has a sub-scanning direction. A first carriage 14 movable in the direction 13, a second carriage 15 having the second mirror 18 and the third mirror 19 and movable in the sub-scanning direction 13, an imaging lens 21, and a document image are detected. CCD as an image sensor
21 and an A / D converter 22 for A / D converting an output signal from the CCD 21 and transferring it to the page memory 5 of the facsimile control unit 4 described above.

In FIG. 2, the original 2 placed on the contact glass 1 is read line by line in the sub-scanning direction 13 by the movement of the first carriage 14 and the second carriage 15. For each line of the document 2, the first carriage 1
Light from a light source 15 in the first carriage 14 is reflected by the first mirror 17 and the second carriage 15 in the first carriage 14.
The image is formed on the light receiving surface of the CCD 21 via the second mirror 18 and the third mirror 19, and further through the lens 20,
Detected by the CCD 21. The light image for each line detected by the CCD 21 is output as an electric signal, and the output signal is converted into a digital signal by the A / D converter 22 and transferred to the page memory 5. As shown in FIG. 3, light receiving elements 23 are arranged in the CCD 21 in the main scanning direction 24, and each light receiving element 23 determines whether a certain point is black or white. Each light receiving element 23 corresponds to each pixel,
The CCD 21 includes light receiving elements 23 of at least the number of pixels of one line. When reading of one line is completed in this manner, the first carriage 14 and the second carriage 15 are moved in the sub-scanning direction 13 to read the next line in the same manner.

FIG. 4 shows an example of a state where the document 2 is placed on the contact glass 1 of the document reading device 3. In this example, the upper left is the reference position 25, and the original 2 is placed closer to the upper left. The downward direction in FIG. 4 corresponds to the main scanning direction 24 in FIG. 3, and the rightward direction in FIG. 4 corresponds to the sub-scanning direction 13 in FIG. In FIG. 4, if the main scanning direction is x, the sub-scanning direction is y, and the reference position 25 is (x, y) = (0 mm, 0 mm), for a document of X mm × Y mm, (0 mm, The range of 0 mm)-(Xmm, Ymm) may be read. Here, the range setting in the sub-scanning direction is performed by setting the moving range of the first carriage 14 and the second carriage 15 in the sub-scanning direction 13 in FIG.
The setting can be performed by setting which range of the light receiving element 23 in D21 the result of the light receiving element 23 is valid.

In the document reading apparatus 3, in addition to the reading of a normal sheet document, a double-page spread document such as a book or a document stapled by a stapler is read by a key setting of the operation unit 8. A document reading function is provided, and when the `` spread mode '' for reading a spread document is set, for one document, a certain area is set as a left page, and another certain area is set as a right page, The first carriage 14 and the second carriage 15
Is set, and each area of the left page area and the right page area is read for one document.

Next, the procedure of the "spread mode" for reading and transmitting a two-page spread original with the facsimile apparatus having the structure shown in FIGS. 1 to 4 will be described. Before that, the protocol procedure of the G3 facsimile will be briefly described. The G3 facsimile communication procedure is roughly divided into the following five phases. Phase A: Outgoing call. Phase B: negotiation. The capability of the transmitting side and the receiving side are identified, and the transmission condition is determined. Phase C: Image transmission. Phase D: Post-procedure. If the next original is to be transmitted in the same mode, the MPS is transmitted and the process returns to phase C. If you are finished without the next manuscript,
Transmit EOP and proceed to phase E. Phase E: Line disconnection.

FIG. 5 is a flowchart showing an example of a procedure for reading and transmitting a double-page spread original by the facsimile apparatus shown in FIG. Here, a case where a left page area is read first, and then a right page area is read for a two-page spread document 2 such as a book document placed on the contact glass 1 is shown. First, after the “spread mode” is set on the operation unit 8, when the start key is pressed, the control by the facsimile control unit 4 is started, and a call is first made (phase A).
Execute negotiation (phase B). Then, the left page of the first document is read and transmitted. For that purpose, first, the reading range is set to the left page area. The size of the original 2 to be read here is B4 (257 mm × 364
mm), the reading range in the main scanning direction is x from 0 mm to 257 mm in FIG.
As for one light receiving element 23, the result of the element corresponding to the range of 0 mm to 257 mm is made valid, and the reading range in the sub-scanning direction is such that y is 0 mm to 182 mm in FIG.
, The moving range of the first carriage 14 and the second carriage 15 is set so as to scan between 0 mm and 182 mm. Then, reading is performed, and after reading, the image stored in the page memory 5 is compressed by the compressor 6 and
(Phase C), and the MPS is transmitted (Phase D).

Next, reading the right page of the original 2
Set the reading range to the right page for transmission. At this time, the setting in the main scanning direction is the same as that for the left page, but the reading range in the sub-scanning direction is 18 in FIG.
The moving range of the first carriage 14 and the second carriage 15 is set to be 2 mm to 364 mm. Then, reading is performed, and the image stored in the page memory 5 is compressed by the compressor 6 and transmitted via the modem 7 (phase C). Next, a message prompting document exchange is displayed on the screen 9 of the operation unit 8, and the key input is waited. Here, the user exchanges the original (turns the page in the case of a book) and presses the start key of the operation unit 8. MPS when start key is pressed
(Phase D), read and send the left page,
Read and send the right page repeatedly. When all pages have been transmitted, the user presses the end key here. When the end key is pressed, an EOP is transmitted (phase D),
The line is disconnected (phase E), and the processing ends.

An example of the procedure for reading and transmitting a two-page spread document by the facsimile apparatus shown in FIG. 1 has been described above.
Next, the configuration and operation according to claims 1 to 3 will be described.

(1) The configuration and operation of claim 1. According to the first aspect of the present invention, the reading order of the two-page spread original is
This configuration has a means for reading in both the order of reading the left page area first and then reading the right page area later, and reading the right page area first and reading the left page area later. That is, when reading one document in the order of left page → right page, the procedure is as shown in the flowchart of FIG.
When reading in the order of the left page, in setting the reading range in the sub-scanning direction, the first reading is performed using the first carriage 14 and the second carriage 15 so that y is 182 mm to 364 mm in FIG. The moving range is set, and in the second reading, in FIG.
The moving range of the first carriage 14 and the second carriage 15 may be set to be 182 mm. still,
The setting of the reading order can be arbitrarily set by the user by a key input operation from the operation unit 8 or the like.

(2) The configuration and operation according to claim 2. FIG. 6 is a flowchart showing another example of the procedure for reading and transmitting a two-page spread original by the facsimile apparatus shown in FIG.
9 illustrates an operation corresponding to claim 2. Here, the reading order in the “spread mode” when reading a double-page spread original is set to either “left to right” or “right to left” by a key input operation or the like from the operation unit 8 in advance. Then, in the double-page transmission, the reading range is set in the "left page area" or the "right page area" according to the setting of the "two-page spread mode". In this way, even if it is desired to read the right page after reading the left page, or to read in the reverse order, the reading order is set in the “spread mode” so that the reading is performed in a desired order. Will be able to

As shown in FIG. 6, when the start key of the operation unit 8 is first pressed, the facsimile control unit 4 controls Is started, and a call (phase A) and a negotiation (phase B) are executed first. Next, either "left to right" or "right to left" is selected according to the setting state of the reading order in the "spread mode" set in advance. Here, when the reading order of the “spread mode” is set to “left to right”, the left page of the first document is read and transmitted. That is, similarly to the procedure described with reference to the flowchart of FIG. 5, the reading range is set to the left page area,
The setting of the effective range of the light receiving element 23 in D21 and the moving range of the first carriage 14 and the second carriage 15 are set.
Then, reading is performed, and after reading, the image stored in the page memory 5 is compressed by the compressor 6 and transmitted via the modem 7 (phase C), and the MPS is transmitted (phase D).

Next, after re-detecting the setting state of the reading order ("left to right" in this example) in the "spread mode", this time, in order to read and transmit the right page of the document 2,
The reading range is set in the right page area, the effective range of the light receiving element 23 of the CCD 21 is set, and the first carriage 14,
The moving range of the second carriage 15 is set. Then, reading is performed, and the image stored in the page memory 5 is compressed by the compressor 6 and transmitted via the modem 7 (phase C). Next, a message prompting document exchange is displayed on the screen 9 of the operation unit 8, and the key input is waited. Here, the user exchanges the original (turns the page in the case of a book) and presses the start key of the operation unit 8. MPS when start key is pressed
Is transmitted (phase D), and the setting of the reading order in the “spread mode” is detected again. According to the setting (“left to right” in this example), reading, transmission,
Read and send the right page repeatedly. When all pages have been transmitted, the user presses the end key here. When the end key is pressed, an EOP is transmitted (phase D),
The line is disconnected (phase E), and the processing ends. When the reading order in the “spread mode” is set to “right to left”, the reading order is reversed from the right page to the left page.

(3) The configuration and operation according to claim 2. FIG. 7 is a flowchart showing yet another example of a procedure for reading and transmitting a two-page spread original by the facsimile apparatus shown in FIG. 1, and shows an operation corresponding to claim 3. Here, the “original type” in the “spread mode” is set to “vertical writing original” or “horizontal writing original” in advance by key input operation of the operation unit 8 or the like. In the double-page spread transmission, if the "document type" is "vertical writing document", the "left page area" is set where the first reading range is set, and the "right page area" is set where the second reading range is set. And set "Original Type" to "Horizontal Original"
Then, the right reading area is set when the first reading range is set, and the left page area is set when the second reading range is set. By doing so, in the case of a vertically written original, the contact glass 1
In a state where the pages are spread side by side, since the left page is a page ahead of the right page, reading in the order of the left page → the right page allows the pages to be read in the correct page order. Also, in the case of a horizontally written original, the right page is a page ahead of the left page in a state where the document is folded down on the contact glass 1 so that the right page is read in the order of the left page so that the page is read in the correct page order. Will be done. Therefore, by simply setting the “original type” in “spread mode” to “vertical original” or “horizontal original”, the user does not have to be aware of which page is left or right, Writing / Horizontal Writing "
It is possible to read both book originals in the correct page order.

As a specific operation for setting the type of the original and reading and transmitting the spread original, as shown in FIG. 7, when the start key of the operation unit 8 is first pressed, the control by the facsimile control unit 4 is performed. Is started, and a call (phase A) and a negotiation (phase B) are executed first. Next, depending on the setting of “Original Type” in “Spread Mode”, which has been set in advance,
Or "horizontal writing original" is selected. If the “document type” is set to “vertical writing document”, the left page of the first document is read and transmitted. That is, similarly to the procedure described with reference to the flowchart of FIG.
Of the effective range of the light receiving element 23 and the first carriage 1
4. Set the moving range of the second carriage 15. Then, reading is performed, and after reading, the image stored in the page memory 5 is compressed by the compressor 6 and transmitted via the modem 7 (phase C), and the MPS is transmitted (phase D).

Next, after the setting state of the "document type" (in this example, "vertical writing document") is detected again, the reading range is set to the right page area in order to read and transmit the right page of the document 2. To set the effective range of the light receiving element 23 of the CCD 21 and the first carriage 14 and the second carriage 1
5 is set. Then perform a read,
The image stored in the page memory 5 is compressed by the compressor 6 and transmitted via the modem 7 (phase C). Next, a message prompting document exchange is displayed on the screen 9 of the operation unit 8, and the key input is waited. Here, the user exchanges the original (turns the page in the case of a book) and presses the start key of the operation unit 8.
When the start key is pressed, the MPS is transmitted (Phase D), the setting state of the “document type” is detected again, and the reading of the left page is performed according to the setting (in this example, “vertical writing document”). Repeat sending, reading the right page, and sending. When all pages have been transmitted, the user presses the end key here. When the end key is pressed, the EOP is transmitted (phase D), the line is disconnected (phase E), and the process is terminated. When the “document type” is set to “horizontal writing document”, the reading order is reversed from the right page to the left page.

As described above, as an embodiment of the present invention, an example in which the original reading apparatus is used in a facsimile apparatus has been described.
When the document reading apparatus according to the present invention is used in a document reading section of a digital copying machine, when a two-page spread document such as a book is copied, it can be copied in the page order. In this case, after the data read by the document reading device 3 shown in FIG. 2 and stored in the page memory 5 is subjected to image processing,
The image data is transmitted to an image forming unit composed of a laser printer or the like, and is output to recording paper or the like by the image forming unit. Further, when the document reading device according to the present invention is used for a scanner device, when reading and inputting an image of a book document or the like to an optical file or a personal computer or the like, it is possible to input the images in page order.

[0028]

As described above, in the document reading apparatus according to the first aspect of the present invention, reading the left page first, and then reading the right page, as the reading order of the two pages of a single page. By reading the right page first and then reading the left page, it is possible to read the two spread pages of the document in any order.

In the document reading apparatus according to the second aspect, when reading a document in double-page spread reading, it is determined whether to read the left page first, then read the right page, or read the right page first, and then read the left page. By making it possible to select, it is possible to read two facing pages of a document in an arbitrary order.

In the document reading apparatus according to the third aspect, when reading a document by double-page reading, in the case of a vertically written document, the left page is read first, then the right page is read, and in the case of a horizontally written document, the first page is read. Read the right page to
Next, the left page is read, so for both vertically written and horizontally written documents, the user does not need to recognize which page should be read first. Can be read.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an example of a facsimile apparatus provided with a document reading device according to the present invention.

FIG. 2 is a schematic configuration diagram illustrating a configuration example of a document reading apparatus according to the present invention.

FIG. 3 is a plan view showing an example of a CCD of the document reading apparatus shown in FIG.

FIG. 4 is a plan view showing a state where a document is placed on a contact glass of the document reading apparatus.

FIG. 5 is a flowchart showing an example of a procedure for reading and transmitting a two-page spread original by the facsimile machine shown in FIG. 1;

FIG. 6 is a flowchart showing another example of a procedure for reading and transmitting a two-page spread original by the facsimile apparatus shown in FIG. 1;

FIG. 7 is a flowchart showing yet another example of a procedure of reading and transmitting a two-page spread original by the facsimile apparatus shown in FIG. 1;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 contact glass 2 document 3 document reading device 4 facsimile control unit 5 page memory 6 compressor 7 modem 8 operation unit 9 display screen 10 key 13 sub-scanning direction 14 first carriage 15 second carriage 16 light source 17 first mirror 18 second Mirror 19 third mirror 20 lens 21 CCD 22 A / D converter 23 light receiving element 24 main scanning direction 25 reference position

Claims (3)

[Claims] 1. A reading device for reading a document, wherein a certain region of one document is set as a left page and another certain region is set as a right page.
In a document reading apparatus that reads each of the left page area and the right page area for one document, the reading order of the document is to read the left page area first, read the right page area later, An original reading apparatus comprising means for reading a right page area and subsequently reading a left page area in both order. 2. The document reading apparatus according to claim 1, wherein the user selects whether to read the left page area first, read the right page area later, or read the right page area first and read the left page area later. A document reading apparatus comprising: 3. The original reading apparatus according to claim 1, wherein the left page area is read first, the right page area is read later, or the right page is read first, depending on whether the original is a vertical writing original or a horizontal writing original. A document reading apparatus, comprising: means for reading an area and selecting whether to read a left page area later.