JPH08181851A - Facsimile transmission/reception device and the transmission/reception method - Google Patents

Abstract

PURPOSE: To transmit a large original in actual size to a reception device having a small printer. CONSTITUTION: When a transmission original 7 is A3 size and printing paper on a reception-side is A4 size, the center of the transmission original 7 is divided into two by viewing it in an auxiliary scanning direction. The length and the side of image data are converted on a transmission-side, and it is transmitted to the reception-side. The printer 6 on the reception-side prints the half of the original 7 from the top end on printing paper 8 in the first page, and the half of the original subsequent to the division line 9 of the transmission original 7 on printing paper 8 in the second page. When the two sheets of printing paper 8 are connected with the longer sides as a boundary, a drawing in actual size can be obtained. Only one reading of the original 7 is required. When the transmission original 7 is divided by the division line 9 parallel to a main scanning direction, it is not necessary to especially accumulate and edit image data by the quantity of the original. Furthermore, a general-purpose cut sheet in A4 size can be used as is for printing paper.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a facsimile machine to read a relatively large transmission original, divide the data appropriately, and print it on a small printing paper at the receiving side to obtain a print output close to the original size. The present invention relates to a facsimile transmitting / receiving apparatus and a transmitting / receiving method thereof.

[0002]

2. Description of the Related Art In the case of reading transmission originals of various sizes using a facsimile machine and transmitting them, it is sufficient if the receiving side can prepare and print paper of a corresponding size, but printing on the receiving side The maximum width that the machine can print may be insufficient, or printing paper of an appropriate size may not be installed. In such a case, conventionally, for example, A3 is set on the transmitting side.
When a transmission document of a standard size is read, it is reduced to A4 size, and the receiving side prints in A4 size. However, with such a method, the characters and drawings originally written on a large original are reduced in size, which may be difficult to see. Therefore, a large original is read, the image data of the right half first and then the left half is sent in two batches, and the receiving side receives and prints the vertically long original image of the right half and left half, and prints them together. Adopted the method.

[0003]

The conventional facsimile transmission / reception method as described above has the following problems to be solved. For example, if an A3 size original is read in two times, that is, the width of the A4 size which is the width of the printing paper on the receiver side, and the image data is transmitted,
The images printed on the two printing sheets have overlapping portions with a relatively large width. That is, when an A3 size original is cut into A4 size sheets, an overlap of about 29% occurs.
Therefore, the image data for facsimile transmission also increases by the same amount. Therefore, there is a problem that the time required to transmit the image data is significantly increased as compared with the case where the image data for one A3 size original document is directly transmitted.

Further, a memory for accumulating image data for one original is prepared and the data is electronically divided and transmitted, or the transmitted original is read twice and data of a required width is fetched and transmitted. Either method must be adopted. Therefore, in the former case, the hardware cost becomes high, and in the latter case, there is a problem that the document reading time for transmitting one document becomes long. Further, it is necessary for the receiver side to output two sheets of A4 size printing paper printed by the length of A3 size.
Therefore, there is a problem that general-purpose A4 size printing paper cannot be used, and continuous paper having a long dimension must be adopted.

[0005]

The present invention adopts the following constitution in order to solve the above points. The facsimile transmission / reception device includes a reading unit that reads a facsimile transmission original to obtain image data on the transmitter side, a transmission unit that transmits the read image data to the receiver side, and a reception unit that receives the image data on the receiver side. And a printing machine that receives the image data received by the receiving unit and prints an image corresponding to the document. Further, when the reading width of the document in the main scanning direction is longer than the printing width of the printing machine in the main scanning direction on the receiver side, the division width does not exceed the printing width of the printing machine in the main scanning direction on the receiver side. In this way, the transmission original is divided in the sub-scanning direction with a dividing line parallel to the main scanning direction as a boundary to obtain image data for each block, and the image data for each block is divided in the main scanning direction. Is arranged in the sub-scanning direction of the printing machine, and the data conversion section that executes the array conversion of the data so that the data in the sub-scanning direction is arranged in the main scanning direction of the printing machine and transfers the data to the transmitting section.

Further, the facsimile transmission / reception apparatus is provided with a mode selection section on the transmission side for selecting the operation mode of the apparatus, and the mode selection section has a reception side for printing image data of one original on two sheets of printing paper. When printing is divided into
When the printable areas of two print sheets are printed so as to overlap each other by X when viewed in the main scanning direction of the document, the transmitting side detects the margin width of the leading edge of the document and determines the printable area. If the margin width exceeds the specified value compared with the value, select the operation mode in which the margin is skipped and the transmission is performed so that the receiving side prints at the same size. Select the operation mode to send so that the image is reduced to the width of the printable area or less and printed.

In the facsimile transmission / reception method, when the reading width of the facsimile transmission original in the main scanning direction is longer than the printing width of the printing machine in the main scanning direction on the facsimile receiver side, the division width on the transmitter side is the receiver. The transmission original is divided in the sub-scanning direction so that it does not exceed the printing width of the printing machine in the main scanning direction, and image data for each block is obtained. Are arranged in the sub-scanning direction of the printing machine, and the data array conversion is executed so that the data in the sub-scanning direction are arranged in the main scanning direction of the printing machine, and the data is transmitted to the receiver side.

The width of the transmission original in the main scanning direction is less than or equal to the width of the printing paper on the facsimile receiver side in the sub-scanning direction, and the width of the transmission original in the sub-scanning direction is the printing paper on the facsimile receiver side. If the width of the document is almost an integral multiple of the width in the main scanning direction, the transmission document is divided by the integer in the sub scanning direction.
Image data for each block is obtained by dividing the image into blocks.

Further, the width of the transmission original in the main scanning direction is substantially equal to the width of the printing paper on the facsimile receiver side in the sub-scanning direction, and the width of the transmission original in the sub-scanning direction is the width of the printing paper on the facsimile receiver side. When the width is twice the width in the main scanning direction, the transmission document is divided in half in the sub scanning direction,
The image data in the vicinity of the dividing line is included in the image data for each block in a duplicated manner, and the image data in the vicinity of the side opposite to the dividing line is read and discarded.

Further, the width of the transmission original in the main scanning direction is equal to or larger than the width of the printing paper on the facsimile receiver side in the sub-scanning direction, and the width of the transmission original in the sub-scanning direction is the printing paper on the facsimile receiver side. If the width is more than twice the width in the main scanning direction, the transmission original is divided into a plurality of parts in the sub scanning direction,
The image data for each block is reduced in the main scanning direction and the sub-scanning direction, and the image data in the vicinity of the dividing line is included in an overlapping manner.

Further, the copying apparatus of the present invention includes a reading unit for reading a copy original to obtain image data, a printer for receiving the image data transferred from the reading unit, and printing an image corresponding to the original. If the reading width of the original in the main scanning direction is longer than the printing width of the printing machine in the main scanning direction, select the division width so that it does not exceed the printing width of the printing machine in the main scanning direction, The image is divided into sub-scanning directions by dividing lines that are parallel to the scanning direction to obtain image data for each block, and for the image data of each block, the data in the main scanning direction is in the sub-scanning direction of the printing machine. A data conversion unit that executes array conversion of the data and transfers the data so that the data in the sub-scanning direction is arranged in the main scanning direction of the printing machine.

[0012]

When the transmission original is A3 size and the receiving side printing paper is A4 size, the transmission original is divided into two at the center when viewed in the sub-scanning direction. The image data is vertically / horizontally converted on the transmitting side and transmitted to the receiving side. Therefore, the printing machine on the receiving side has 1
Half of the original to be sent on the printing paper of the page
Half of the transmission line on the printing paper of the page after the dividing line
Is printed. Therefore, if two printing sheets are joined with the long side as a boundary, a full-scale drawing can be obtained. At this time, the transmission original need only be read once, and when the transmission original is divided by dividing lines parallel to the main scanning direction, it is not necessary to store and edit the image data for the transmission original. As the printing paper, a general-purpose A4 size cut sheet can be used as it is.

[0013]

The present invention will be described in detail below with reference to the embodiments shown in the drawings. FIG. 1 is a block diagram showing an embodiment of a facsimile transmitting / receiving apparatus of the present invention. The apparatus shown in the figure comprises a reading unit 1, a data converting unit 2, a transmitting unit 3, a receiving unit 5 connected via a communication line 4 at the time of this transmission, and a printing machine 6. In the reading unit 1, for example, a relatively large A3
A mechanism for reading the transmission original 7 such as a document is provided. The printer 6 on the receiver side is configured to be capable of printing, for example, A4 size at the maximum.

In such a case, the transmitter side reads the transmission original 7 shown in the drawing in the reading direction as shown by the arrow to obtain image data. At this time, in the present invention, the transmission original 7 is divided into several parts in the sub-scanning direction with the dividing line 9 oriented parallel to the main scanning direction as a boundary. In this example, since the transmission document 7 of A3 size is twice as large as the printing paper 8, it is divided into two in the sub-scanning direction. That is, assuming that the width of the transmission original 7 is L1 and the width of the printing paper 8 is L2, the reading width of the transmission original 7 in the main scanning direction is L1. Then, the print width of the printer 6 on the receiver side is the maximum of this length L2. The reading width L1 is longer than the printing width L2. Therefore, in this state, it is impossible to send a full size image by facsimile to print.

Therefore, the transmitter is divided so that the division width does not exceed the printing width L2 of the printing machine. In this embodiment, the division width is set to L2 and the printing width is set to L2, so that both are selected. The data conversion unit 2 performs array conversion of the image data thus read so that the data in the main scanning direction are arranged in the sub-scanning direction of the printing machine and the data in the sub-scanning direction are arranged in the main scanning direction of the printing machine. Although this specific operation will be described later, the read data for the first page of the transmission original 7 is exactly 90 by such array conversion.
It is rotated by ° and transmitted to the receiver side. Therefore, the receiver side receives the read data for the first page and the read data for the second page as they are, and prints each on the printing paper 8 of A4 size to divide the transmission original 7 by the dividing line 9. Two images are obtained. If these are pasted together with the long side as a boundary, a printed output having the same dimensions as the transmission original can be obtained.

The facsimile transmission / reception apparatus of the present invention having the above-described configuration is realized by the following system configuration, for example. FIG. 2 shows an external perspective view of the facsimile transmission / reception device. As shown in this figure, the transmission / reception apparatus of the present invention comprises, for example, a transmitter 10 and a receiver 11 connected via a communication line 4. It is assumed that the transmitter 10 can read the A3 size transmission original 7, and the receiver 11 is A
The printing paper 8 of 4 size can be printed. The receiver 11 prints the two images divided by the dividing line 9 shown in FIG. 1 on the printing paper 8 only by causing the transmitter 10 to read the transmission original 7 once using such a transmitting / receiving device. And then discharge.

FIG. 3 shows an explanatory view of a comparative example. In order to explain the reduction in the amount of data processed by the device of the present invention, a comparative example of a transmission / reception method performed without modifying the transmitter is shown here. In the conventional method, for example, as shown in FIG.
The transmission document 7 of A3 width is divided by a dividing line 13 parallel to the sub-scanning direction to obtain left A4 width image data. Also,
Further, the transmission original 7 is read again, and this time, image data of A4 width on the right side divided by another division line 14 is obtained. Such image data is continuously transmitted to the receiving side, and is printed on a print sheet having A4 width and A3 length. If these are pasted together, an output of the same size as the original on the transmitting side can be obtained. However, as a result, as shown in FIG. 3C, a relatively large overlap between the dividing lines 13 and 14 occurs on the receiver side, and data transmission / reception in this portion is wasted. On the other hand, in the apparatus of the present invention, the transmission originals can be halved almost accurately, and the originals can be transmitted as they are and joined together, and this kind of waste does not occur.

FIG. 4 is an explanatory view of an image data array conversion method. The array conversion of image data by the data conversion unit 2 shown in FIG. 1 is performed as shown in this figure, for example. The image data of the first page of the transmitted manuscript is
As shown in this figure, for example, 2432 in the main scanning direction,
It is composed of 1728 pixels in the sub-scanning direction. Half of the image data having the dividing line 9 as a boundary has the same structure. Here, the arrangement of the image data thus read in the main scanning direction and the sub scanning direction is switched.
That is, the image data of the first page in the figure is rotated 90 ° so that 1728 pieces are arranged in the main scanning direction and 2432 pieces are arranged in the sub scanning direction as shown in the lower right part of the figure. If the image data array conversion is performed in this way and then the image data is transmitted line by line in the main scanning direction, the image shown in FIG. 1 can be printed as it is on the receiving side.

FIG. 5 shows a concrete block diagram of the data conversion section 2 shown in FIG. First, the reading unit 1
Is composed of an image line sensor 21, an image processing circuit 22, and a reading control circuit 23. Further, the data conversion unit 2 includes a data array conversion circuit 24, a page memory 25,
It is composed of a memory control circuit 26, a printer 27, a switch 28, an encoding circuit 29, and a buffer memory 30. The image line sensor 21 of the reading unit 1 optically reads an image of a transmission original and converts it into an electric signal. For example, this image line sensor 21 is A3
The width of 297 mm of an original document is photoelectrically converted in the main scanning direction, and the pixel density of 8 dots per millimeter is 1
An analog electric signal is obtained line by line. In the case of an A3 size document, the vertical width is 472 millimeters and the pixel density in the sub-scanning direction is set to about 7.7 lines per millimeter. The image processing circuit 22 is a circuit that binarizes the analog image data output from the image line sensor 21 to obtain digitized image data.

The read control circuit 23 is an image processing circuit 22.
Is a circuit for performing transfer control for transferring the image data generated by the above to the data array conversion circuit 24 line by line. The image data thus read is temporarily stored in the page memory 25 capable of storing image data for one page of A4 size. At this time, the data array conversion circuit 24 is a circuit which, when storing the image power in the page memory 25, processes it according to the procedure already described with reference to FIG. The memory control circuit 26 is a circuit that outputs an address signal and a data write / read control signal for controlling input / output of the page memory 25 during such data conversion processing. The printer 27 is a device used to obtain a copy of a document read by the transmitter.

When the reading width of the transmission original is shorter than the printing width of the printing machine on the receiver side, the switch 28 encodes the image data obtained as it is from the image processing circuit 22 through the data array conversion circuit 24 without being array-converted. Circuit 2
In the case of the example shown in FIG. 1, which is longer than the printing width of the printing machine, the switching control for receiving the array-converted data stored in the page memory 25 and transferring it to the encoding circuit 29. Is a circuit that performs. This switch 28
May be configured such that the width in the main scanning direction is automatically read from the content of the signal read by the image processing circuit 22 to operate, or the operator judges the size of the document and manually operates. It may be configured by a switch that is switched by. The encoding circuit 29 is a circuit that compresses and encodes the image data output from the switch 28. The buffer memory 30 is a part that temporarily stores the compressed image data and transfers it to the transmitting unit 3.

The device configured as described above operates as follows.
In FIG. 5, first, the image line sensor 21 of the reading unit 1 reads a transmission document of A3 size in the main scanning direction,
Image data for one line is obtained. This image data is input to the image processing circuit 22, and is 243 per line.
Digital image data corresponding to two pixels is obtained. This image data is sent to the data array conversion circuit 24 under the control of the read control circuit 23 and written in the page memory 25. The write address is generated by the memory control circuit 26. At this time, for example, by the data array conversion circuit 24 and the memory control circuit 26, the page memory 25 is subjected to array conversion of the image data in the main scanning direction in the sub-scanning direction, and the image data in the sub-scanning direction is array-converted in the main scanning direction. Image data is written in.

When the same processing is repeated up to the dividing line 9 of the transmission original 7 shown in FIG. 1, the array-converted image data shown in the lower side of FIG.
One 4-size sheet is stored. Here, the reading operation by the reading unit 1 is temporarily stopped, and the data stored in the page memory 25 is sent to the encoding circuit 29 via the switch 28,
Performs data compression. The encoded data after compression is stored in the buffer memory 30. When the encoding of the image data up to the dividing line 9 of the transmission document 7 shown in FIG. 1 is completed, the reading unit 1 performs the same reading process, data array conversion process, and encoding process on the portion after the dividing line 9. . In this way, the buffer memory 30 stores the coded data which is array-converted in the size of A4 for two pages. This encoded data is transmitted by facsimile via the transmission unit 3. As a result, the receiver side shown in FIG. 1 can receive and print an A3 size original document in a format in which the original size is divided into two A4 size sheets.

Since the above steps are taken,
The data array conversion circuit 24 may be arranged between the page memory 25 and the switch 28, for example. In this case, the page memory 25 temporarily stores the image data of A4 size which is not array-converted, and the image data read from the image data is array-converted by the data array conversion circuit 24 and supplied to the encoding circuit 29. It will be configured as follows. However, the configuration shown in FIG. 5 is effective in that the algorithm for reading the image data from the page memory 25 to the printer 27 and the algorithm for reading the image data to the encoding circuit 29 can be made common. Is.

FIG. 6 shows an example of division of a long original. In the above-described embodiment, the A3 size original is divided into two in the sub-scanning direction, and the receiver side outputs the two A4 size print sheets. However, the present invention is not limited to the above-described embodiment, and for example, for an A3 width long document, this can be divided into any number and transmitted.
Also in this case, if the width L1 of the transmitted document in the main scanning direction is substantially equal to the width of the printing paper on the receiver side in the sub scanning direction,
The divided blocks are provided so as to be substantially equal to the width L2 of the printing paper in the main scanning direction on the receiver side when viewed in the sub-scanning direction of the transmission original, so that even for a long original, data duplication is small and effective. It is possible to send and receive facsimiles using printing paper. Of course, in this case, it is preferable that all blocks are selected to have a size equal to or smaller than the size of the printing paper on the receiver side in the vertical direction and the horizontal direction, and preferably divided into substantially equal widths. Of course, it does not matter if the fraction comes out at the end.

[Reading and discarding image data] By the way,
Normally, printing by a printing machine such as a facsimile machine does not use the entire surface of the printing paper, and a certain margin is generated around it. FIG. 7 is an explanatory diagram of the effective area of the original. As shown in this figure, when attention is paid to the printing paper 8, for example, the hatched portion in the figure is a printable effective area, and the margin portion around it is an unprintable area.

Therefore, in consideration of such a condition, when the transmission document is divided and read / transmitted as described above, the two long A4 size sheets printed out are joined to each other with the long side as a boundary. In some cases, the image near the dividing line may be missing. Therefore, in this embodiment, a measure for preventing such a dropout is provided.

FIG. 8 is a diagram for explaining a method of reading and discarding image data. The one shown in the figure is one in which two printing sheets 8 are arranged so as to correspond to the transmission original. here,
As described above, there is a non-printable marginal portion in the portion of the two printing sheets 8 that corresponds to the dividing line of the transmission document, and the image in this portion may be missing in the manner described above. is there. Therefore, in this embodiment, in reading the first page, the leading edge portion of the transmission original is read and discarded by the width corresponding to the margin of the printing paper, and then the image data of the A4 size equivalent width is read. Therefore, image data is obtained up to a position slightly below the dividing line 9 shown in FIG. This way
When printing is performed on the receiver side, all the image data up to the dividing line are printed in the effective area as shown by.
For the second page, the reading is started from slightly above the dividing line, and the image data corresponding to the margin width at the trailing edge of the original is read and discarded as indicated by. By doing this,
An image obtained by dividing the transmission original document into two is printed in the printable effective area, and the images are prevented from being lost by connecting the images as they are.

Since the transmission document itself has a margin, it may be possible to further reduce the read discard amount by controlling not to read the margin. In general, the upper and lower end portions of the document often include unnecessary images, and even if the images are read and discarded, there are many cases where the main portion of the image is not missing.

In the case of reading and discarding image data, specifically, the following processing is performed. First, in the part of the dividing line 9 of the transmission document shown in FIG. 1, the first page and the second page of the arbitrary amount of image data are overlapped. Then, the image data is read and discarded at the beginning portion and the trailing end portion of the transmission image by the amount of the overlap. In this case, the memory control circuit 26 shown in FIG.
The image data to be stored in No. 5 is not stored in the leading end portion of the transmission document, but the image data is read and stored in excess by the amount discarded by reading the dividing line.

When such image data for one page of A4 size is coded and compressed by the coding circuit 29,
Next, the memory control circuit 26 releases the remaining portion of the page memory 25 while leaving the image data corresponding to the overlapping portion of the first page and the second page. Therefore, the reading unit 1 resumes reading the remaining transmission original and accumulates image data from the portion next to the overlapping portion already stored in the page memory 25. In this case, the image data of the rear end portion of the transmission document that is finally read by the reading unit 1 cannot be stored in the page memory 25 and is therefore discarded. In this way, the image data in which some images overlap each other as shown on the right side of FIG. 8 is transmitted to the buffer memory 30.

[Reduction of image data] The original image may be lost by the above method. In this case, the following method is used. In Figure 9,
The explanatory view of reduction and duplication of image data is shown. In this embodiment, for example, as shown in FIG.
At the same time, the upper half and the lower half are reduced by an appropriate ratio at the same time.

Next, the overlap of images when the image data is reduced is checked. As shown in the figure, A3
By reducing the size of the original document so that the half of the image of the A3 original document can be stored in each of the effective areas of the A4 original document, the printing paper 8-1, 8
All images can be printed in the effective part of -2. Such reduction of the read image is performed by the read control circuit 23 of the reading unit 1. In that case, specifically, the reduction processing is performed by a conventionally well-known method such as thinning out pixels. The subsequent processing is similar to that already performed at the time of the data truncation processing, the next image data is stored in the page memory while leaving a part of the image data of the overlapping portion in the page memory 25, and finally, for two pages. To obtain image data for transmission. As a result, it is possible to take measures when an effective image exists in the peripheral portion of the transmission document and it is desired to prevent the cut-off.

[Switching of Transmission Mode] Note that the truncation of image data as described with reference to FIG. 8 does not occur at all when there is a sufficient margin at the front end portion or the rear end portion of the transmission document. On the other hand, the reduction of the image data described with reference to FIG. 9 is effective in the case where the transmission document is completely transmitted from one end to the other. To select which mode to operate, the operation mode can be switched manually by providing a selection switch (not shown) in the mode selection unit 31 shown in FIG. Further, it is also possible to automatically perform this by making the mode selection unit 31 have the following determination function.

FIG. 10 shows an explanatory view of the transmission mode switching operation. It is assumed that the original 41 having the total length L in the drawing has a blank space of width W at least at the upper end thereof, and the blank is detected at the time of reading the original. On the other hand, the two printing papers 42 and 43 for receiving and printing the image of the original are both of the size shown by the broken line, and the printable area is the portion of the vertical width H surrounded by the actual battle. In this example, for example, the horizontal widths of the print areas of the printing papers 42 and 43 are sufficiently wider than the horizontal width of the document, and it is not necessary to take into account the missing image data in the horizontal direction. In this example, one A3
The image data of the original 41 of the size is divided into two sheets of A4 size printing paper 42 and 43 and printed. At this time, as shown in the figure, it is assumed that the printable areas of the two printing sheets are printed so as to overlap each other by X when viewed in the vertical direction in order to prevent the image from being lost. Therefore, the printing paper 42, 43
The length of (2H-X) is printed in the vertical direction. If (L-W), which is obtained by subtracting the margin width W from the length L of the document, is less than or equal to this (2H-X), there is no image loss even when printing at the same size. That is, if the width W of the detected margin satisfies the following expression, equal-size printing may be executed. W ≧ L− (2H−X) Therefore, as described with reference to FIGS. 8 and 9, the same size images are partially overlapped and transmitted in two times. In the case of the other formulas other than this, if there is no margin at the lower end of the document, the image is lost. W <L- (2H-X) Therefore, in this case, the original is reduced and printed. The reduction ratio is as shown in the following formula because the original having the length LW is reduced to the width 2H-X. [(2H−X) / (L−W)] × 100 [%] Therefore, as described with reference to FIG. 9, the original image is reduced and partially overlapped, and the original image is transmitted twice. .

In this way, the margin width of the leading edge of the document is detected and compared with a predetermined value that defines the printable area as described above. When the margin width exceeds the predetermined value, the margin portion is read. Skip and select the operation mode to send to print at the same size. In other cases, select the operation mode to send to reduce the image of the document to the width of the printable area or less and print it. In addition, the mode selection unit 3
1 is operated. As a result, it is possible to automatically select and process the optimum printing condition in consideration of both the original and the printable area of the printing paper. Although this embodiment has been described focusing only on the vertical width of the document, the same processing may be performed on the horizontal width of the document. Further, the margin width of the lower end of the document may be taken into consideration.

The present invention is not limited to the above embodiments. The overlapping width of the output images may be freely selected according to the content of the transmitted image. The size of the page memory provided on the transmitter side may be any size that is commensurate with the size of the printing paper so that it can store image data that can be printed on the receiving side at the same resolution as the reading of the transmitted original. It is possible to select an appropriate capacity accordingly.

Further, the present invention can be applied to the copy function of the original using the printer 27 of the transmitter shown in FIG. Further, not only a facsimile machine but also a general copying machine can read a large-sized document, but the printing paper size is limited, or when the paper runs out, it is urgent to print on a small-sized paper. In this case, it can be applied to the case where the printing is desired to be divided into small-sized printing sheets for the convenience of filing.

[0039]

According to the facsimile transmitting / receiving apparatus of the present invention described above, for example, if the transmitting side can read an A3 size document and the receiving side has a printing ability of half of the A4 size, it can be used. It can be sent in full size by minimizing unnecessary data transmission by dividing it into two times. Moreover, when the printing sheets are joined and restored, the amount of data for the overlapping images can be minimized, so that the facsimile transmission time can be shortened sufficiently. Specifically, A
In the case of transmitting a 3 size transmission original by the conventional method, the image information overlaps by about 30%, but according to the present invention, this can be reduced to an almost negligible level. Moreover, when the read image data is divided and transmitted, the capacity of the memory for temporarily storing the image data can be made sufficiently smaller than the image data obtained by reading the entire transmission original, and the facility cost can be reduced. .

If the width of the transmission original in the main scanning direction is substantially equal to or less than the width of the printing paper in the sub scanning direction,
When the width of the transmission original in the sub-scanning direction is approximately an integral multiple of the width of the printing paper in the main-scanning direction, this is divided into integers and sequentially transmitted, and efficient facsimile transmission can be performed.

Further, since the transmission original can be divided and transmitted by one-time reading, complicated reading control is unnecessary, and the configuration is optimized for automation. Further, by discarding the information existing at the leading edge portion and the trailing edge portion of the read document, a certain overlap is provided in the portion near the dividing line of the document, and it is easy to prevent the loss of image data in the portion near the dividing line. . Further, by reducing the image data on the transmitting side at a constant reduction rate, it becomes possible to print all the necessary images on the effective portion of the printing paper and output them with appropriate overlap. Further, by selecting the reduction ratio, it is possible to efficiently fit the transmission document on an appropriate number of printing sheets.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a facsimile transmitting / receiving apparatus of the present invention.

FIG. 2 is an external perspective view of a facsimile transmission / reception device.

FIG. 3 is an explanatory diagram of a comparative example.

FIG. 4 is an explanatory diagram of an image data array conversion method.

FIG. 5 is a block diagram of a specific example of a data conversion unit.

FIG. 6 is an explanatory diagram of an example of division of a long original.

FIG. 7 is an explanatory diagram of an effective area of a document.

FIG. 8 is an explanatory diagram of a method of reading and discarding image data.

FIG. 9 is an explanatory diagram of reduction and duplication of image data.

FIG. 10 is an explanatory diagram of a transmission mode switching operation.

[Explanation of symbols]

 1 reading unit 2 data converting unit 3 transmitting unit 4 communication line 5 receiving unit 6 printing machine 7 transmission document 8 printing paper 9 dividing line

Claims (7)

[Claims] 1. A reading unit for reading image data transmitted by facsimile on a transmitter side, a transmission unit for transmitting the read image data to a receiver side, and a receiver unit for receiving the image data. A receiving unit, a printing machine that receives the image data received by the receiving unit, and prints an image corresponding to the original, and a reading width of the original in the main scanning direction is a main scanning of the printing machine on the receiving side. If the print width is longer than
The division width is selected so that it does not exceed the printing width of the printing machine in the main scanning direction on the receiver side, and the transmission original is divided in the sub-scanning direction with a dividing line parallel to the main scanning direction as a boundary, Of the image data of each block, the data in the main scanning direction are arranged in the sub-scanning direction of the printing machine, and the data in the sub-scanning direction are arranged in the main scanning direction of the printing machine. A facsimile transmission / reception apparatus comprising a data conversion unit that executes data array conversion and transfers the data to the transmission unit. 2. A transmitting side is provided with a mode selecting section for selecting an operation mode of the apparatus, wherein the mode selecting section divides the image data of one original into two printing sheets on the receiving side. When printing, when the printable areas of two printing sheets are printed so as to overlap each other by X when viewed in the main scanning direction of the document, the margin width of the leading end of the document is detected on the transmission side, and Compared with a specified value that defines the printable area, and if the margin width exceeds the specified value, select the operation mode in which the margin is skipped and transmission is performed so that the receiving side prints at the same size. In the above case, the facsimile transmission / reception apparatus according to claim 1, wherein an operation mode is selected in which the image of the document is reduced to a width equal to or smaller than the printable area and is transmitted so as to be printed. 3. When the reading width of the facsimile transmission original in the main scanning direction is longer than the printing width of the printing machine in the main scanning direction on the side of the facsimile receiver, the division width on the side of the transmitter is on the side of the receiver. The transmission original is divided in the sub-scanning direction so as not to exceed the printing width in the main-scanning direction of the printing machine, and image data for each block is obtained. A facsimile transmission / reception method characterized by arranging data in the sub-scanning direction of the printing machine, performing array conversion of the data so that the data in the sub-scanning direction is arranged in the main scanning direction of the printing machine, and transmitting the data to the receiver side. . 4. The width of the transmission original in the main scanning direction is less than or equal to the width of the printing paper on the facsimile receiver side in the sub-scanning direction, and the width of the transmission original in the sub-scanning direction is printing paper on the facsimile receiver side. 4. The facsimile data according to claim 3, wherein the image data for each block is obtained by dividing the transmission original document into a fraction of the integer in the sub-scanning direction when the width is approximately an integral multiple of the width in the main scanning direction. How to send and receive. 5. The width of the transmission original in the main scanning direction is substantially equal to the width of the printing paper in the sub-scanning direction on the facsimile receiver side, and the width of the transmission original in the sub-scanning direction is the width of the printing paper on the facsimile receiver side. When the width in the main scanning direction is twice, the transmission original is divided into halves in the sub scanning direction, and the image data for each block includes the image data in the vicinity of the division line in an overlapping manner. 4. The method according to claim 3, wherein the image data in the vicinity of the side opposite to the dividing line is read and discarded. 6. The width of the transmission original in the main scanning direction is greater than or equal to the width of the printing paper in the sub-scanning direction on the facsimile receiver side, and the width of the transmission original in the sub-scanning direction is the printing paper on the facsimile receiver side. If the width is more than twice the width in the main scanning direction, the transmission original is divided into a plurality of pieces in the sub scanning direction, the image data for each block is reduced in the main scanning direction and the sub scanning direction, 4. The facsimile transmission / reception method according to claim 3, wherein each of the image data is included in a duplicated manner. 7. A reading unit for reading a copy original to obtain image data, a printer for receiving the image data transferred from the reading unit and printing an image corresponding to the original, and a main scanning direction of the original. When the reading width of the printer is longer than the printing width of the printing machine in the main scanning direction, the division width is selected so as not to exceed the printing width of the printing machine in the main scanning direction, and the copy document is parallel to the main scanning direction. The image data for each block is obtained by dividing the image data for each block in the sub-scanning direction by dividing the image data for each block in the sub-scanning direction. A copying apparatus comprising a data conversion unit that executes array conversion of data so that data in the scanning direction is arranged in the main scanning direction of the printing machine and transfers the data.