JP3201557B2 - Facsimile machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile apparatus which can omit an ear whitening process for processing image data of a predetermined width portion at both ends of a document so as to be white data.

[0002]

2. Description of the Related Art Conventionally, a facsimile apparatus has a CCD in which a large number of light receiving elements are arranged in a line in the width direction of a document.
The original is read line by line by a read head composed of (charge-coupled devices), and digital image data obtained by A / D conversion of the image signal is compared with binary threshold data to obtain binary image data. Is to be converted to The white level data obtained by executing a white level check in advance is used to compensate for the effects of irradiation light, variations in the performance of light receiving elements, etc., which affect the read performance of the read head. When reading of each document is started, in the case of a letter-size document, white level data for 1728 pixels corresponding to the entire width thereof is stored in the level data memory from the white level data memory. The image data of each pixel of each line is transferred to a binarization circuit via a data memory, and is converted into binarized image data by comparing the image data of each pixel with the corresponding binarization threshold data.

Here, it is not preferable that shadow lines at both ends of a document appear in a transmission image, and according to CCITT recommendation, image data to be transmitted must start from white data for each line. Therefore, in the conventional facsimile machine, three-fourths of the width of 4 mm on the reading start end side of the original is used.
Data processing (this is called ear-white processing) for forcibly replacing two pixels and image data of 32 pixels of 4 mm width on the reading end side with white data is performed. In other words, in the case of a letter-size original, the image data of each line is
It is composed of white data of 32 pixels, read image data of 1664 pixels, and white data of 32 pixels.

For example, Japanese Patent Application Laid-Open No. 60-257662 discloses a counter circuit for counting the number of continuous white and black pixels when compressing input image data, and a counter corresponding to the count number of the counter circuit. An image data compression device is described which includes a circuit for generating a compression code and a replacement circuit for replacing a black pixel at the beginning of input image data with a white pixel.

[0005]

However, in the conventional facsimile apparatus, in the ear-white processing, the image data of 32 pixels on the read start end side of read image data (for example, 1728 pixels) and the read end Since the white data of “0” needs to be overwritten with the image data of the 32 pixels on the end side, there is a problem that the load of data processing of the CPU of the microcomputer increases and the transmission time increases.

Further, according to the image data compression apparatus described in the above publication, there is a problem that the configuration of a circuit for writing white data as image data of the first pixel of each line becomes complicated. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and has as its object to provide a facsimile apparatus capable of omitting ear-white processing through simple data processing.

[0008]

According to a first aspect of the present invention, there is provided a facsimile apparatus having a reading head having a plurality of reading elements arranged in a line in the paper width direction of a document, and starting from one end of the document for each line. comprising reading means for reading in this order, and read buffer for storing binary image data binarized read by the reading means, and a transmission buffer for storing image data read from the read buffer
In the facsimile apparatus , of the binarized image data read by the reading means and binarized , the reading of the original is performed.
Predetermined number of pixels at the start end and predetermined at the reading end
Image data at the center of the original excluding image data of several pixels
Data only to the read buffer line by line.
Image data transfer means, and the transmission
When storing the central image data of the original in the buffer
In addition, a predetermined number of pixels on the reading start end side of the original and the original
Characterized in that a white data adding means for adding white data as the image data of a predetermined number of pixels of the read termination end
It is assumed that.

[0009]

[Action] In the facsimile apparatus according to claim 1, the reading means comprise a read head having a plurality of read elements arranged in the paper width direction of the document in a line shape, one side of the document for each line Read in order from. The reading buffer stores binarized image data read by the reading means and binarized. The transmission buffer, image data read from the read buffer is stored.

The image data transfer means is read by the reading means.
Are among the binarized binarized image data, the reading of the document
A predetermined number of pixels on the starting end side and the
The image on the center side of the document excluding the image data of a predetermined number of pixels
Only image data is transferred to the read buffer line by line.
Send. The white data adding unit performs the transmission for each line.
When storing the central image data of the original in the buffer
A predetermined number of pixels on the document reading start end side and the document reading
White data as image data of a predetermined number of pixels at the end
Is added.

[0011]

Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, a main body 2 of the facsimile apparatus 1 includes a container-shaped lower cover 3, an upper cover 4 put on the lower cover 3, and a frame (not shown) provided therein. It has. Lower cover 3
Is equipped with a receiver 5. In the lower cover 3, a recording paper cassette 21 capable of storing a large number of recording papers 22 made of fixed-size cut paper is set.

The facsimile apparatus 1 includes, in addition to the main body 2, an operation panel 6, a recording device 20 for recording on a recording paper 22 with a recording head 25 via an ink ribbon 27, and a recording paper 22.
A feeder 30 for feeding a document 51, an image reader 80 for reading an image of the document 51, a control unit 100 for controlling the facsimile machine 1, and the like.

First, the recording device 20, recording paper cassette 21, and line feed device 30 will be described with reference to FIG. The recording paper 22 is sent out one by one from a recording paper cassette 21 by a paper feed roller 31 and then sent to a recording device 20 by a line feed device 30, where images such as characters and figures are recorded. Line feed device 3
0 denotes a paper feed roller 31, a paper guide 32, a pair of feed rollers 33, a platen 34, a pair of paper discharge rollers 35, a pair of paper guides 36, and a paper discharge tray 3.
8, the feed roller 31, the feed roller 3, and the like.
3, a platen 34, and a paper discharge roller 35, an LF motor 4
0 (see FIG. 4), and is rotationally driven via a gear system (not shown).

The leading edge of the recording paper 22 sent from the recording paper cassette 21 is detected by a recording paper leading edge sensor 24, and the recording start timing of the recording device 20 is determined based on the detection signal. The recording paper size detection sensor 23
Among the recording paper cassettes 21 prepared for the various recording papers 22 having different sizes, the type of the recording paper cassette 21 mounted on the facsimile machine 1 is detected, and the size of the recording paper 22 is determined based on the detection result. It is determined.

The recording device 20 is provided in the upper cover 4,
The recording device 20 is a recording head control device 1 shown in FIG.
Head 25 controlled by the control unit 8 and the print head 25
Platen 34 rotatably provided at a position facing the
And an ink ribbon cassette 26. The recording head 25 is composed of a thermal head having a large number of heating elements arranged in a line in a direction perpendicular to the direction in which the recording paper 22 is fed, and a large number of heating elements are selected based on a signal supplied to the recording head controller 18. Is heated. Platen 3
Reference numeral 4 denotes a line feed of the recording paper 22 and the ink ribbon 27 by being driven to rotate around a center line by a LF motor 40 via a gear system (not shown).

The ink ribbon cassette 26 is a heat-sensitive ink ribbon 2 having a width corresponding to the recording range of the recording head 25.
7 and the ink ribbon 27 is connected to the supply-side ribbon roll 2.
7a, and is wound around a take-up shaft 27b through a space between the recording head 25 and a platen 34.
7b is rotationally driven in the winding direction by a LF motor 40 via a gear system. The ink ribbon 27 is line-fed in synchronization with the recording paper 22, but an image is formed on the recording paper 22 by feeding the ink ribbon 27 and the recording paper 22 and pressing the ink ribbon 27 against the recording paper 22 by the recording head 25. Be recorded.

The recording paper 22 on which the image has been recorded is guided by a paper guide 36 and sent to a paper discharge tray 38.
It is discharged outside the device. The recording paper discharge sensor 37 detects the discharge of the recording paper 22, and detects that the recording paper 22 on which the image is recorded has been completely discharged by the recording paper discharge sensor 37 when a plurality of recordings are continuously performed. Then, the line feed device 30 is controlled by the control unit 100, which will be described later, so that the next recording paper 22 is started to be fed from the recording paper cassette 21, thereby avoiding a paper jam.

Next, the document feeder 50 and the image reader 80 will be described with reference to FIG. A document feeder 50 and an image reading device 80 for reading an image recorded on the document 51 are provided in the upper cover 4.
The document 51 is placed on a document receiver 52 detachably attached to the upper cover 4 and set between a pair of document guides 53 shown in FIG.
The original 51 is detected by a pair of feed rollers 55,
By the document feeder 50 consisting of the feed roller 57 and the like of the paper guide 56,1 pairs sent to the document reading position in Riga image reading device 80.

The document sensor 54 detects the presence or absence of a document and determines whether the document is a B4 size document (B4 document) or an A4 size document.
It is composed of two sensors for detecting whether the document is a size document or a letter size document (A4 document). The roller 5
Reference numerals 5 and 57 denote an original feed motor 60 (see FIG. 4).
It is rotationally driven via a gear system. Original feed motor 60
Is driven and controlled by the control unit 100.

The image reader 80 includes a light source 81 as a light emitter, a lens 82, mirrors 83 and 84, a read head 85 composed of a CCD (charge coupled device) comprising a plurality of light receiving elements, and the like. The light source 81 irradiates the original 51 with light, and the reflected light from the original 51 is condensed by a lens 82, reflected by mirrors 83 and 84, received by a read head 85, and the image on the original 51 is converted into one image. It is read for each line. A pixel is a minimum unit constituting an image, and is a region (area) on the document 51 read by one light receiving element.

The size of one pixel is determined by various factors such as the size of the light receiving element, the positions and angles of the mirrors 83 and 84, the position and the focal length of the lens 82, and the like.
, The size in the main scanning direction is 0.13 mm
The size in the sub-scanning direction is determined by the feed amount of the document 51 while the image reading device 80 reads one line. In the facsimile machine 1, the feed amount of the document 51 is 0.26 mm,
0.13 mm and 0.065 mm can be selected. The size (area) of one pixel when each of these feed amounts is selected is 0.13 mm × 0.26 mm, respectively.
0.13mm × 0.13mm, 0.13mm × 0.06
5 mm. As the feed amount decreases, the area of one pixel decreases, and the resolution increases.

The light receiving element of the reading head 85 is a photoelectric conversion element for outputting a voltage corresponding to the intensity of the received reflected light. An analog image signal representing the magnitude of the output voltage is supplied to the control unit 100. , Binarized image data is created from the image signal. In the facsimile apparatus 1 capable of reading a B4 size document, the reading head 85 is composed of 2500 light receiving elements arranged in a line in the paper width direction of the document 51. The leading edge of the document 51 is detected by the document leading edge sensor 58, and reading of the document 51 is started after the detection signal is input. After reading, the document 51 is discharged to the outside through the opening 59.

As shown in FIG. 3, an operation panel 6 is provided on the upper cover 4, a liquid crystal display 7 is provided at the rear of the operation panel 6, and a keyboard 8 is provided at the front and center of the operation panel 6. Is provided. The numeric keypad 9 is on the left side of the keyboard 8, the copy key 10 and the start key 11 are on the right side.
However, various keys such as a memory key 12, a function key 13, a set key 14, and cursor keys 15, 16 are provided in the center. The copy key 10 is a key for instructing copying of a document and for instructing the start of copying, and the start key 11 is a key for instructing the start of various processing operations. The function key 13 is a key for instructing display of various executable functions, and selection of the function is performed by operating the ten keys 9 and the cursor keys 15 and 16. The set key 14 is a key for instructing confirmation of selection, and the memory key 12 is a key for instructing selection of memory transmission.

Next, a control system of the facsimile machine 1 will be described with reference to FIGS. As shown in FIG. 4, a control unit 100 for controlling the facsimile machine 1
Is a communication line 15 connected to the partner device 16, a control panel 6, a display controller 17 for controlling the display 7, a recording head controller 18 for controlling the recording head 25, the various sensors and switches, a light source 81, a reading device. Head 85, LF motor 40, document feed motor 6
0 respectively.

As shown in FIG. 5, the control unit 100 includes a CPU 101, a ROM 102 storing a plurality of control programs for controlling the facsimile machine 1, and a RAM 102.
103 is provided.

The ROM 102 stores image data read from the document 51 and binarized in a read buffer 104, converts the image data into coded compressed image data, and transmits and outputs the coded compressed image data. And the compressed image data received from the partner device 16 via the communication line 15 and temporarily stored in the reception buffer 106, converted into image data, and converted into image data.
07, and a control program for reception / decoding / recording control for recording / outputting the image data on the recording paper 22 via the recording device 20.

The RAM 102 has an image reading device 8
A read buffer 104 for storing binary image data read at 0, and a transmission buffer 10 for temporarily storing encoded compressed image data to be transmitted via the communication line 15
5. A receiving buffer 106 for temporarily storing the compressed image data received via the communication line 15, a recording buffer 107 for temporarily storing the image data obtained by decoding the received compressed image data, and 2500 pixels. White level data memory 108 which stores binary threshold data (hereinafter referred to as white level data) for setting a corresponding white level, which stores white level data obtained by white level setting processing. A memory area such as a threshold data memory 109 for storing binarized threshold data corresponding to 2500 pixels transferred from the memory 108 is provided.

The microcomputer has a bus 11
0, a driving circuit 113 for the light source 81, a driving circuit 114 for the LF motor 40,
A drive circuit 115 for the original feed motor 60, a communication control circuit 116 (including a modem) connected to the communication line 15, and the like are connected. Further, the control unit 10
0, a clock signal generating circuit 112 for generating a clock signal of a predetermined high frequency is also provided. The clock signal CLK generated by the clock signal generating circuit 112 is output to the read head 85 and the gate array 111, respectively. . In FIG. 5, circuits and devices not directly related to the present invention are omitted.

Next, the gate array 111 will be described with reference to FIG. As shown in FIG. 6, a start pulse SP is applied to the read head 85 in the gate array 111.
And outputs a start / end command Si to the CPU 101.
And a transfer gate 120 of the read head 85 in synchronism with the clock signal CLK.
A / D converter 122 for A / D converting an image signal output for each pixel, and binary threshold data supplied for each pixel from CPU 101 are latched, and the binary threshold data is clocked. Binary threshold data latch 124 output in synchronization with signal CLK, digital image data output from A / D converter 122, and binary threshold supplied from binarization threshold data latch 124 A binarization circuit 123 for converting the digital image data into binarized image data (hereinafter, referred to as image data) for each pixel by comparing the data with the data;
And a shift register 125 for converting serial image data supplied from the CPU into parallel image data in units of 1 byte and outputting the converted image data.
A binary data latch 126 for latching image data for each byte and outputting the image data to the CPU 101 via the bus 110 is provided.

Next, the counter circuit 121 will be described with reference to FIG. It is assumed that the facsimile apparatus 1 is a dedicated A4 document machine for reading only A4 size and letter size A4 size documents. Width of A4 document can be read each line of A4 document while corresponding to 1728 pixels (1728 light-receiving elements), counts the clock signal from "0" to "1727" (see FIG. 1 1) .

As shown in FIG .
The imaging time t3 and the image data transfer end timing t2 are
By setting as follows, the document reading start end side
32 pixel image data and 32 pixels on the read end side
Without transferring the image data of 1664 on the center side of the original.
Only the image data of the pixel is transferred to the reading buffer 104
32 pixels on the reading start end side and the end
The image data of 32 pixels on the end side includes the above-mentioned 166 pixels.
Encodes four pixel image data and sends it to the transmission buffer 105
When transferring, add encoded white data.
Was.

The control unit 100 includes a power source shown in FIG.
A counter circuit 121 is provided. This counter circuit
A detection circuit 131 for “0” detection and a count
"1663" detection circuit for detecting the value "1663"
132 and these detection circuits 131 and 132
Si signal generation circuit 134 and generation of start pulse SP
SP value setting to set one SP value to set timing
And the S value set by the SP value setting device 136.
SP value data latch 137 for latching P value data
And the count value of the counter 130 is
Each time the SP value supplied from the
A detection circuit 133 for detecting an “SP value” that outputs a
An SP signal generation circuit 135 is provided. And
For example, “2” as the SP value via the SP value setting unit 136
419 "is set.

The detection circuits 131, 132, 133
As shown in FIG. 7 , the start / end command Si which is connected to the counter 130 by the bus and output from the Si signal generation circuit 134 to the CPU 101 rises at the timing t1 of the count value “0” and rises at the timing t1 of the count value “1663”. It falls at t2. Also, the SP signal generation circuit 135
Outputs a start pulse SP to the read head 85 at the timing t3 of the count value “2419”.

Next, an original reading / encoding / transmission control in the facsimile apparatus 1 configured as described above will be described with reference to FIG.
With reference to a flowchart and Figure 11 of 8-10 will be described. As shown in FIG. 8, control the facsimile apparatus 1 each time the A4 document is set is started, first, the reading start preparation processing is executed (S 50). This read start preparation process, will be described with reference to FIG. 9, the reading start end
Center excluding 32 pixels on the side and 32 pixels on the reading end side
The binary threshold data for 1664 pixels on the
From the bell data memory 108, the threshold data memory 1
09 to the corresponding 1664 memory cells
And then return.

Next, in S 51 of FIG. 8, when the start pulse SP to the read head 85 from the gate array 111 is supplied, a read is started from the first CCD in turn. Then, the image data transfer for transferring the image data from the binarized data latch 126 to the reading buffer 104 is started at the rising timing t1 of the start / end command Si. Next, the binary data latch 1
26, the image data is transferred to the reading buffer 104 ( S52 ). Next, it is determined whether the transfer of one line of image data (pixel data of 1664 pixels) is completed ( S53 ). Unless the transfer of the image data is completed, S52 and S53 are repeatedly executed, the transfer of the image data of one line is completed, and the start / end command Si falls at the timing t2 ( S53 : Yes).
Move to S54.

If the answer is Yes in S53, the image data of one line
Data (this is the timing t1 as shown in FIG. 11).
Of 1664 pixels read during the period t2 to t2
(Which is data) has been completed.
As image data of 32 pixels on the reading start end side of the original,
The encoded white data is stored in the corresponding buffer of the transmission buffer 105.
It is stored in addition to the molycell, and then in S55,
Transfer from the binary data latch 126 to the read buffer 104
Encodes the transmitted read image data for 1664 pixels
Encoding process is performed, and the encoded compressed image data is
The data is transferred to the transmission buffer 105 and the encoded
It is stored in the area following the white data.

Next, in S56, the reading of the original is completed.
Encoded white data as pixel data of 32 pixels on the end side
Corresponds to the compressed image data in the transmission buffer 105.
It is stored in addition to the following memory cell. Next, the encoded one-line image data is transmitted and output via the communication control device 116 ( S57 ).

Next, it is determined whether or not the original has been read, that is, whether or not the reading of the original has been completed ( S58 ). If the reading has not been completed ( S58 : No), the process proceeds to S51.
~S 58 is repeatedly executed, the reading is finished (S
58: Yes), it is determined whether there is the next document on the basis of the detection signal of the original sensor 54 in S 69 is, in the case where the next document is present (S 69: Yes), S 50 ~S 69 are repeated When there is no next original ( S69 : No), the reading is stopped ( S60 ), and the original reading coded transmission control ends.

Next, a description will be given of the one-line end interrupt processing executed every time one line is read with reference to FIG. 10. First, the read buffer pointer in the read buffer 104 is updated (S30). ,
In order to feed the original by one line, the original feed motor 60 is line-fed by one line (S31). Then, the threshold data memory 109 reads the binary threshold data latch 1
Threshold data transfer for transferring binary threshold data one pixel at a time to 24 starts (S32), and this interrupt processing ends. This threshold data transfer is executed in parallel with the routine in FIG. 8 from timing t1 to timing t2.

Next, the operation of the document reading / encoding transmission control will be described. As shown in FIG. 11, when the start pulse SP is output from the counter circuit 121 to the read head 85 at the timing t3 corresponding to the count value “2419” set via the SP value setter 136, the read head 85 Reading starts, but image data between timing t3 and timing t1, that is,
The image data of 32 pixels on the reading start end side of the A4 document is not transferred to the reading buffer 104.

When the start / end command Si output from the counter circuit 121 to the CPU 101 rises at the timing t1, the transfer of the image data of 1664 pixels after the 33rd pixel on the reading start end side is started.
The transfer of the image data of 1664 pixels is performed between the timing t1 and the timing t2, and the transfer of the image data ends at the timing t2. Then, at a timing t3 corresponding to the count value “2419”, a cycle of reading the next one line is started.

As described above, 2
Transfer start and end timing t for each line for transferring the binarized binarized image data to the read buffer 104
Since 1 and t2 are set so as to exclude image data of 32 pixels on the reading start end and 32 pixels on the reading end of the document, the data transfer amount for transferring the image data to the reading buffer 104 is significantly reduced. CPU
The data processing load for data transfer in 101 can be remarkably reduced.

In addition, when encoding the image data for each line, the encoded white data is added as the image data of the 32 pixels on the reading start end side of the original 51, and the 32 pixels on the reading end end side are added. Since encoded white data is added as pixel image data, image data of 32 pixels on the reading start end and 32 pixels on the reading end of the document 51 can be reliably set as white data. Moreover, in this case , the data processing time for writing the white data is shorter than the data processing time in the conventional ear-white processing.

Therefore, at least the reading buffer 104
The amount of data transferred to the document 51 can be significantly reduced, and the load of data processing can be reduced.
, The reading and transmitting time of the data can be shortened. Further, since the SP value setting unit 136 and the SP value data latch 137 are provided in the counter circuit 121, the timing t3 at which the count value becomes the SP value can be appropriately set via these, so that the versatility is improved. Excellent.

Next, a description will be given of a modification in which the above embodiment is partially modified. 1) The 32 pixels on the reading start end side and the reading end end side are merely examples, and may be set to the number of pixels such as 4, 8, or 16 pixels.

2) The A / D converter 122 is omitted, and instead, the D / A converter D / A converts the binary threshold data.
An A / A converter may be provided so that the binarization circuit 123 compares the analog image signal and the binarization threshold signal to generate binarized image data.

3) The count circuit 121 may be omitted, and the microcomputer may execute a count process for counting clock signals. Furthermore, in the case of a facsimile apparatus that reads A4 and B4 documents, the counter circuit 121 uses a start / end command Si and a start pulse SP that are suitable for reading A4 documents and reading B4 documents, respectively. Is generated.

4] The counter circuit 12 of the gate array
1, SP value setting unit 136, SP value data latch
137 is omitted, and the “SP value” detection detection circuit 133 is
A detection circuit for detecting the count value “2419”
Is also good.

[0049]

According to the facsimile apparatus of the first aspect , a predetermined number of pixels on the reading start end side of the original in the binarized image data read by the reading means and binarized.
And the image data of a predetermined number of pixels at the end of reading the original
Only the image data on the center side of the excluded document is
Means for transferring image data to the read buffer
And the transmission buffer stores the original in the transmission buffer for each line .
When storing the center image data, the
Predetermined number of pixels at the start end and predetermined at the reading end
Since the white data adding means for adding white data as image data of a number of pixels is provided, the following effects are obtained.

Since the amount of data transferred to the transmission buffer for image data can be significantly reduced, the data processing load for data transfer can be significantly reduced. In addition, the image data of the predetermined number of pixels on the reading start end side and the predetermined number of pixels on the reading end side of the document can be reliably set as white data. Moreover, in this case, the data processing time for adding white data does not become longer than the conventional ear-white processing. Therefore, at least the amount of data transferred to the reading buffer can be significantly reduced, so that the load of data processing can be reduced and the time required to read and transmit the original can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a facsimile apparatus according to an embodiment of the present invention.

FIG. 2 is a vertical sectional side view of the facsimile machine.

FIG. 3 is a plan view of an operation panel of the facsimile machine.

FIG. 4 is a block diagram of a control system of the facsimile machine.

FIG. 5 is a block diagram of a main part of a control unit of the control system.

FIG. 6 is a block diagram showing a configuration of a gate array of the control unit.

FIG. 7 is a block diagram showing a configuration of a counter circuit of the gate array.

FIG. 8 is a flowchart of document reading encoding transmission control.

FIG. 9 is a flowchart of a reading start preparation process in FIG. 8;

FIG. 10 is a flowchart of a read 1 line end interrupt process.

FIG. 11 is a time chart of image data, a start / end command, a start pulse, and the like .

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H04N 1/40-1/409 H04N 1/46 H04N 1/60

Claims (1)

(57) [Claims] A reading head having a plurality of reading elements arranged in a line in a paper width direction of a document, reading means for sequentially reading from one end side of the document for each line, a read buffer for storing binary binarized image data Te, in the facsimile apparatus having a transmission buffer for storing image data read from the read buffer, binarized read by said reading means A predetermined number of pixels on the reading start end side of the original and the original
Excludes image data of a specified number of pixels at the end of reading the manuscript
Only the image data on the center side of the scanned original is
Image data transfer means for transferring the image data to a read / write buffer;
Start reading the original when storing the image data
The predetermined number of pixels on the edge side and the predetermined number on the
A facsimile apparatus, comprising: white data adding means for adding white data as image data of pixels .