JPH05236222A - Facsimile communication equipment - Google Patents

Abstract

PURPOSE:To reduce a printing time and to save a recording paper by printing out picture information while compressing the picture information without printing out undesired lines included in the picture information of an original resulted from decoding communication information so as to easily see the printing. CONSTITUTION:Transmission data read by a read section 1 are modulated into communication information, and a communication section 3 sends the information to a communication destination and print data resulted from demodulating the information received by the communication section 3 are printed out by a recording section 2. In this case, a dot counter 9 in a gate array 4a of a central control section 4 counts dots to be printed out in black in existence in line data of one line by integrating them by the number of strobes. When the value is less than a value set in advance in a ROM 6, the line is not printed out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile communication device for transmitting image information of an original by transmitting / receiving communication information.

[0002]

2. Description of the Related Art Conventionally, a facsimile communication apparatus generally reads image information of an original with an input unit, encodes the image information and transmits it as communication information to a communication destination, while receiving communication information from the communication destination. After being decrypted and temporarily stored in a storage device as image information of a document, the image information of the document is printed on a recording sheet by an output unit, so that the image information of the document is communicated by facsimile.

The printing process on the recording paper by the output section of the facsimile communication apparatus as described above is performed based on the flowchart of FIG.

First, a control signal D, which is included in the image information of a document obtained by decoding the communication information received from the communication destination,
By detecting the sub-scanning line density in the CS (Digital Command Signal), it is determined whether or not this image information is in the standard mode (step 21, hereinafter step is abbreviated as S), and if it is the standard mode, the standard flag set is set. Then, the printing position for printing on the recording paper is set (S22).

Next, only the line data of one line of the image information of the original is read from the storage device (S23), input to the print head of the output section (S24), and the first printing is performed (S25). Then, it is judged whether or not the image information is in the standard mode (S26), and if it is the standard mode, the second printing of the image information is performed (S27).
Thus, in the standard mode, the same line is printed twice.

Thereafter, it is judged whether or not the image information of the original document remains in the storage device (S28), and if the image information remains, the process returns to S23 again, and the next one line of the image information of the original document is stored in the storage device. Line data is read and the same steps are repeated. When all the image information of the original document stored in the storage device is printed, the print end flag is set (S29), and the output unit of the facsimile communication device ends the printing on the recording paper.

[0007]

However, since the above-mentioned conventional facsimile communication apparatus faithfully prints all the image information of the received document on the recording paper, the line containing almost no image information to be printed is Printing is performed on the recording paper in the same manner as a line containing a large amount of image information to be printed.

The line containing almost no image information to be printed is irrelevant to the original image information of the original, for example, a line generated at the boundary between the originals when a plurality of originals are read, or a line above and below the original. Slight points, lines, and the like generated by dust in the margins and blanks are transmitted as communication information.

In the above-mentioned conventional facsimile communication apparatus, since the unnecessary lines are printed on the recording paper in the same manner as the lines containing a large amount of image information to be printed, it takes time to print the image information of the original. Also, it consumes the recording paper more than necessary.

[0010]

In order to solve the above-mentioned problems, a facsimile communication apparatus of the present invention is a facsimile communication apparatus for transmitting and receiving image information of a document as communication information with a communication destination via a telephone line. If the number of dots to be printed in one line of the communication information is less than a preset value, the above line is not printed.

[0011]

In the above arrangement, the image information of the original is compressed and printed on the recording paper without printing unnecessary lines included in the image information of the original obtained by decoding the communication information. Can be printed easily without reducing the amount of information
In addition, the printing time can be shortened. Further, it becomes possible to save the recording paper.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The following will describe one embodiment of the present invention with reference to FIGS.

The facsimile communication apparatus according to the present embodiment, as shown in FIG. 2, is a reading unit 1 for reading image information of a document to be transmitted (hereinafter referred to as transmission data).
And the communication unit 2 that transmits and receives the image information of the original document (hereinafter, referred to as print data) on the recording paper and the communication unit that modulates the image information of the original document with the communication destination via a telephone line or the like. The communication unit 3 includes a communication unit 3, a modulator / demodulator unit 5 that demodulates communication information transmitted and received by the communication unit 3 into image information of a document, a central control unit 4 that controls these units, and a power supply unit 8.

The reading unit 1 illuminates an original with, for example, a high-intensity green fluorescent lamp, reads transmission data by plane scanning with a CCD (Charge Coupled Device), and inputs this transmission data to the central control unit 4. The recording unit 2 prints the print data input from the central control unit 4 on a recording paper such as plain paper by using a semiconductor laser printer to visualize the print data.

When the print data input from the central control unit 4 is printed on the recording paper by the recording unit 2, the print data is divided into lines and input to the print head.
When one line is printed on the recording paper once, for example,
The data amount corresponds to 1 / 7.7 mm width of the recording paper in the paper feed direction. The number of line data of one line is 1728 dots when the recording paper is A4 vertical feed, and when the B4 vertical feed is used. Each is composed of 2048 dots.

There are two types of printing methods, standard mode and fine mode, for printing the printing data on the recording paper by the printing unit 2. These printing methods are DCS of the control signal included in the printing data. (Digital Command
Signal) in the sub-scan line density. In the standard mode, the line data of one line is printed twice each as shown in FIG. 5A, whereas in the fine mode, the line data of one line is 1 as shown in FIG. 5B. Prints only once. The print data printed is
Fine mode is clearer.

Next, the communication section 3 is an LI having a telephone function.
Further, the modulation / demodulation device unit 5 encodes the transmission data input from the central control unit 4 by, for example, MMR (Modified Modified Read) and modulates it into communication information, and the communication unit 3 is a U (Line Inter-face Unit). The communication information received by the communication unit 3 is decoded and demodulated into print data, and the print data is input to the central control unit 4.

The central control unit 4 includes a CPU (Central Process
sing unit) and manages and controls the entire facsimile communication device. Between the central control unit 4 and the modulation / demodulation device unit 5, a ROM (Read Only Me) in which a program for control performed by the central control unit 4 is stored.
1) and a RAM (Random Access Memory) 7 for temporarily storing print data and transmission data.

With the above structure, the facsimile communication apparatus modulates the transmission data read by the reading unit 1 into communication information and transmits the communication information from the communication unit 3 to the communication destination, while the communication received by the communication unit 3 from the communication destination. By printing the print data obtained by demodulating the information on the recording paper by the recording unit 2, the image information of the document is communicated by facsimile.

In addition, the gate array 4 inside the central control unit 4
A dot counter 9 is provided in a. As shown in FIG. 3, the dot counter 9 is composed of a counting circuit 9a and an adding circuit 9b.

The counting circuit 9a is a synchronous binary counter that operates in synchronization with the counting pulse, and has a set input terminal S,
It has a reset input terminal R, a clock input terminal CK, a print data input terminal D and an output terminal bar Q. Terminal D
When the print data stored in RAM 7 is input to
The number of dots to be printed in black existing in the print data is counted and input from the terminal bar Q to the terminal bar CK of the adding circuit 9b.

The adder circuit 9a is adapted to convert the count number input to the terminal bar CK into a dot count value for each line of print data, and input this dot count value to the central control unit 4. This dot counter 9
Can also be used by diverting a part of a control device (not shown) in the gate array 4a that controls the print density of the print head of the recording unit 2.

The printing process of printing data on the recording paper by the facsimile communication apparatus of the present embodiment having the above-mentioned structure will be described below with reference to the flowchart of FIG. In the present printing process, the case where the second printing of one line of the standard mode print data is omitted will be described.

First, the sub-scanning line density in the DCS of the control signal contained in the print data obtained by decoding the communication information received by the communication unit 3 is detected by the central control unit 4, and this print data is set to the standard mode. It is determined which printing method is used in the fine mode (step 1, hereinafter step is abbreviated as S).

If the print data is in the standard mode, the standard flag is set to set the print position for printing on the recording paper (S2), and then the print data is printed on the recording paper. If the print data is in the fine mode, the print data is directly printed on the recording paper. Since the standard flag setting sets the printing position for printing on the recording paper, it is performed every time the page of print data is changed.

To print the print data on the recording paper, first, R
Line data of one line of print data is read from the AM 7 (S3), and this line data is input to the print head such as the thermal head of the recording unit 2 (S4). Next, the dot counter 9 counts the number of dots to be printed in black existing in the line data (S5), and then the first printing is performed (S6).

Next, it is judged whether or not this line data is line data for forming a single line by overwriting a plurality of strobes (S7), and if it is line data for overwriting. Returns to S4 and repeats the above steps for the number of strobes. In the case of line data to be overwritten, the dot counter 9 is adapted to count the number of dots for printing black existing in the line data for one line by integrating the number of strobes.

After that, it is judged whether or not the print data is in the standard mode (S8). In the standard mode, the dot count value counted by the dot counter 9 is the set value set in the program stored in the ROM 6 in advance. It is determined whether or not it is above (S9). If the dot count value counted by the dot counter 9 is equal to or larger than the preset value set in the ROM 6 in advance, the line data is printed for the second time (S10). The set value set in the ROM 6 can be freely changed by operating an operation panel (not shown).

When it is determined in S8 that the print data is not in the standard mode, and in S9, the dot count value counted by the dot counter 9 is R in advance.
If it is less than the set value set in OM6, the second printing of the line data is not performed.

After that, it is judged whether or not the print data remains in the RAM 7 (S11), and if the print data remains, the process returns to S3 again, and the line data for one line next to the print data is read from the RAM 7. Repeat similar steps. When all the print data stored in the RAM 7 has been printed, the print end flag is set (S12), and the recording unit 2 of the facsimile communication apparatus ends the printing on the recording paper.

In this way, when the print data is printed on the recording paper based on the flowchart of FIG. 1, as shown in FIG. 4, when the total number of lines of the print data is N, one line is printed. If the dot count values of the first and third lines are less than the preset values set in the ROM 6 in advance, the recording unit 2 sets 2 of the line data of the first and third lines.
The line data is printed a total of (2N-2) times without printing the second time (right side in FIG. 4). Therefore, as compared with the case where line data is printed 2N times (left side in FIG. 4), the print time of print data can be shortened by the time required to print two lines. Further, the recording paper can be saved by the length required for printing two lines.

When it is determined in S7 that one line is formed by one strobe, when the line data of this line is input to the print head of the recording unit 2, the dot counter 9 causes the above line to be processed. Since it is possible to count the number of dots that are printed in black in the data, if the dot count value is less than the preset value set in the ROM 6, it is possible to set not to perform the first printing.

Further, the printing process on the recording paper is as follows.
It can also be applied to fine mode. In this case, the dot count value obtained by counting the number of dots to be printed black in the line data of one line in S5 is
If the value is less than the set value set in the ROM 6 in advance, the printing of that line may not be performed.

With the above configuration, the facsimile communication apparatus does not print the line if the number of print dots in one line of print data is less than the preset value. Therefore, since the print data is compressed and printed on the recording paper without printing the unnecessary line included in the print data, it is easy to see, and the printing time can be shortened without reducing the information amount of the print data. Furthermore, the recording paper can be saved.

[0035]

As described above, the facsimile communication apparatus of the present invention has a configuration in which the above line is not printed if the number of dots for printing within one line of communication information is less than a preset value. is there.

Therefore, the image information of the original is compressed and printed on the recording paper without printing unnecessary lines included in the image information of the original obtained by decoding the communication information. Easy to read without reducing the amount, and
Printing time can be shortened. Further, it is possible to save the recording paper.

[Brief description of drawings]

FIG. 1 is a flowchart showing a printing process of printing data on a recording sheet by a facsimile communication apparatus according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of the facsimile communication device.

FIG. 3 is a block diagram showing a configuration of a dot counter in a central control unit of the facsimile communication device.

FIG. 4 is an explanatory diagram showing a print result of print data on a recording sheet by the facsimile communication device.

5A is an explanatory diagram showing a printing method of print data in a standard mode, and FIG. 5B is an explanatory diagram showing a printing method of print data in a fine mode.

FIG. 6 is a flowchart showing a printing process of printing data on a recording sheet by a conventional facsimile communication apparatus.

[Explanation of symbols]

 1 reading unit 2 recording unit 3 communication unit 4 central control unit 5 modem unit 6 ROM 7 RAM 8 power supply unit 9 dot counter

Claims (1)

[Claims] 1. In a facsimile communication apparatus for transmitting and receiving image information of an original as communication information with a communication destination via a telephone line, the number of dots for printing within one line of the communication information is a preset value. If it is less than the above, the facsimile communication apparatus is characterized in that the above line is not printed.