JPH0349362A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To considerably reduce uneven recording by printing one line plural times by a thermal head in accordance with picture signals alternately outputted from line buffers. CONSTITUTION:At the time of printing one-line data having 1/7.7mm subscanning width, a control part 3 transmits odd data of a first line from a head driving part 2 to a thermal head 1 and feeds a printing form by 1/30.8mm. The control part 3 transmits even data of the first line from the head driving part 2 to the thermal head 1 simultaneously with the end of printing of odd data and feeds the printing form by 1/30.8mm. After the end of printing of even data, the same data as the first line is recorded as the second data of the first line by the same control method. Thus, irregular recording of a reception picture is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile machine, and particularly to a recording control system for a recording unit.

[Conventional technology]

Conventionally, the recording method for this type of facsimile machine was to print one line at a scanning line density of 1/7.7 mm twice, on an odd-numbered dot line and an even-numbered dot line, and to print while stopping the paper feed. .

[Problem to be solved by the invention]

The recording method of the conventional facsimile machine mentioned above is 1/7.
If one 7mm line is printed twice,
If the odd-numbered dot lines and even-numbered dot lines are not printed in a straight line, the received image quality will deteriorate as shown in Figure 2.
To prevent this, it is necessary to stop the paper feeding mechanism before printing, which has the drawback of uneven recording and increased printing time.

[Means to solve the problem]

The facsimile device of the present invention includes a head drive unit having a thermal head unit, an odd line buffer and an even line buffer for driving the thermal head unit, a control unit for controlling the head drive unit, and a paper feeding mechanism. In a recording unit equipped with a pulse motor and a pulse motor drive unit that drives the pulse motor, the thermal head is configured to print one line a plurality of times using image signals from the line buffer that are alternately output. do.

〔Example〕

Next, the present invention will be explained with reference to the drawings. FIG. 1 is a diagram of one embodiment of the present invention.

In this embodiment, a method of printing one line divided into four times will be explained. The apparatus shown in FIG. 1 is composed of a thermal head 1, a head drive section 2, a control section 3, a pulse motor drive section 4, and a pulse motor 5.

When printing one line of data of 1/7.7 mm in the sub-scanning direction, the control section 3 instructs the head drive section 2 to transmit the odd number data of the first line to the thermal head 1 . At the same time, the pulse motor 5 is connected to the pulse motor drive section 4.
Instruct to give a pulse that can feed the paper by 30.8 mm. The thermal head 1 starts recording at the same time as the pulse motor 5 starts rotating. At the same time as printing of the odd number data is completed, the control unit 3 instructs the head drive unit 2 to transmit the even number data of the first line to the thermal head 1. At the same time, 1/3 of the pulse motor 5 is connected to the pulse motor drive unit 4.
Instruct to give a pulse that can feed the paper by 0.8 mm. At the same time as the pulse motor 5 starts rotating, the thermal head 1
starts recording. When the printing of the even number data is completed, the same data as the first line is printed on the first line using the same control method as described above.
Record it as the second line of the line.

In this way, as shown in Fig. 3, by printing 1/7.7 mm line data in four parts in the sub-scanning direction, uneven recording of the received image can be eliminated, and the printing time can be reduced. It can be done quickly.

〔Effect of the invention〕

As explained above, the present invention has one line (1/7°7mm)
By printing the data in multiple times of four or more, it is possible to significantly reduce recording unevenness, and since printing is performed without stopping the paper feed mechanism, there is an effect that the recording time can be shortened.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIGS. 2 and 3 are plan views of recording paper showing the printing state. 1... Thermal head, 2... Head drive unit, 3...
Control unit, 4... Pulse motor drive unit, 5... Pulse motor.

Claims (1)

[Claims] A head drive unit having a thermal head unit, an odd line buffer and an even line buffer for driving the thermal head unit, a control unit for controlling the head drive unit, a pulse motor for driving a paper feeding mechanism, and a pulse motor for driving the paper feeding mechanism. 1. A facsimile apparatus, characterized in that the recording unit includes a pulse motor drive unit for driving a pulse motor drive unit, and causes the thermal head to print one line a plurality of times based on image signals from the line buffer that are alternately output.