JPS60136475A - Recording system - Google Patents

Abstract

PURPOSE:To increase a recording speed by providing plural heating element blocks to select successively these blocks in order starting from a block having the small number of elements and driving in a bundle the selected blocks when a recordable range is obtained for said blocks. CONSTITUTION:A dot counter 10 counts the number of black dots for every block of a line and sends its count data to a comparison selection part 11. The number of recording dots which can be recorded at a time is set at the part 11. The numbers of black dots are compared with each other for each input block, and the blocks are selected successively in the order of blocks of smaller number of black dots. These selected blocks are sent to a thermal head 8 within a range of blocks which can be recorded at a time. Thus the number of recording blocks can be reduced within a line. This increases the recording speed.

Description

DETAILED DESCRIPTION OF THE INVENTION +81 Technical Field of the Invention The present invention relates to a reception and recording device for a facsimile communication device, and particularly to a recording method that can improve recording speed.

Background of fbl technology In recent years, facsimile communication has been put into practical use for transmitting a document, such as a figure, to a remote location using a communication line. In facsimile communication, sending and receiving devices between users are connected through a communication line and documents are exchanged between users.The image of the original document on the sender's side is scanned using an image sensor, for example, in main scanning and vertical scanning, which scans horizontally written documents in the horizontal direction. The image data is transmitted as an electrical signal by scanning in the sub-scanning direction, that is, the document feeding direction, and the receiving side receives the transmitted image data and records it on, for example, thermal paper to reproduce the document. It is something.

There is also a method that uses a telephone line for the line.

As facsimile communication becomes more widespread, there is a demand for faster communication, and in particular, there is a desire for faster recording speed.

tc+Prior Art and Problems The conventional method will be described below with reference to FIGS. 1 to 3. FIG. 1 is a side view showing an outline of the internal mechanism of a facsimile receiving apparatus to which the present invention is applied, FIG. 2 is a perspective view showing the recording section of FIG. 1, and FIG. 3 is an explanatory diagram of a conventional method.

As shown in FIG. 1, the receiving device 1 includes a receiving section (not shown), a paper feed section 3 storing a roll of thermal recording paper 2 (hereinafter referred to as thermal paper), and a receiving document that records on the thermal paper 2. A recording unit 4 for creating, a cutter unit 5 for cutting the thermal paper 2, a transport unit 6 for transporting the cut document 2a, and the transported document 2a.
It has a storage part 7 for storing the parts, and each part is arranged in the order shown in the figure.

The thermal paper 2 is transferred by rotation of feed rollers R1 to R3 driven by a stamp motor (not shown).

Therefore, when the thermal paper 2 sent out from the paper feed section 3 by the feed roller R1 is recorded in the recording section 4, the feed roller R2,
R3, and cutter unit 5 according to the size of the transmitted document.
The paper is cut at the conveyor section 6 and stored in the storage section 7.

As shown in FIG. 2, in the recording section 4 of such a receiving apparatus 1, a thermal head 8 is disposed with a thermal paper 2 sandwiched between rollers R4. In the thermal head 8, heating resistors 9 are arranged at high density (for example, 1,728 in the case of A4 size) on the surface facing the thermal paper 2.

During recording, the heating resistor 9 is made to generate heat only when recording black dots obtained by scanning characters or the like on a document. Therefore, a line with many black dots, that is, a line with many recorded dots, requires a large amount of current, so one line is divided into several blocks and recorded.

In other words, the number of heating resistors 9 in a block is determined so that the current value when all the heating resistors 9 in one block generate heat is equal to the allowable current value, and one line is divided into blocks and recorded. .

However, in this case, the heating resistor 9 that should generate heat in the block
Even when the current value is small and the current value has a margin, the recording time for one block remains constant, resulting in a problem of poor recording efficiency. That is, the operating efficiency of the power source used becomes low, and at the same time, the recording time becomes slow.

As a method to deal with this, a method has been proposed in which the number of black dots to be recorded at one time is determined based on the recording data before recording to increase the recording speed and power efficiency. (Unexamined Japanese Patent Publication No. 53-13434) That is, as shown in FIG. Assuming that 432 (for 2 blocks) is used, the number of recorded dots from 1 to 4 times in the numerical example is as shown in the figure.

However, there is a strong demand for even higher recording speeds, especially in facsimile communications.

(d1 Purpose of the Invention The purpose of the present invention is to meet the above-mentioned demands, and to provide a recording method that can improve the recording speed.

(Q) Structure of the Invention The present invention provides a plurality of heating element blocks in which the total number of heating elements to be driven is within a certain number according to the current capacity of the heating elements, and a block with a small number of elements to be driven. This recording method is characterized in that it includes a selection means for selecting from among a plurality of heat generating element blocks, and collectively drives the heat generating elements of a plurality of selected heat generating element blocks, thereby achieving the object.

(F1 Embodiment of the Invention Hereinafter, an embodiment of the present invention will be described with reference to the block diagram of FIG. 4. The same reference numerals indicate the same objects throughout the figures.

In FIG. 4, numeral 10 indicates a dot counter, and numeral 11 indicates a comparison and selection section.

The dot counter 10 counts the number of black dots in each block of one line, and has a function of sending the counted data to the comparison and selection section 11.

The comparison and selection section 11 is set with the number of recording dots that can be recorded at one time, and compares the number of black dots for each input block, selects blocks in descending order of number of black dots, and collects them into a range that can be recorded at one time. It has a function to send to the thermal head 8.

With such a configuration and function, when recording, one line of recorded data is sent to the counter 10 to count the number of black dots in each block, and the comparison and selection section 11 selects the number of black dots with fewer black dots. The blocks are sent to the thermal navel 1-8 and recorded in a recordable range at a time.

That is, as shown in FIG. 5, when the example explained using the conventional method is processed by the method according to the present invention, it is recorded in 1 to 3 times, and the fourth time is a blank recording, and this amount is not recorded. The recording speed will be faster.

In this way, the recording speed can be improved.

(g) Detailed Description of the Invention According to the present invention, the number of recording dots in each block of one line is selected in ascending order and recording is performed in a range that can be recorded at one time. This has the effect that the number of recording blocks in a line can be reduced and the recording speed can be increased.

[Brief explanation of drawings]

FIG. 1 is a side view showing an overview of the internal mechanism of a facsimile receiving device to which the present invention is applied, FIG. 2 is a perspective view showing the recording section of FIG. 1, FIG. 3 is an explanatory diagram of the conventional method, and FIG. The figure is a block diagram showing an embodiment according to the present invention, and FIG. 5 is an explanatory diagram of FIG. 4. In the figure, 2 is a thermal paper, 4 is a recording section, 8 is a thermal head, 9 is a heating resistor, 10 is a dot counter, and 11 is a comparison and selection section. Kaya 1 Kunihaya 2 Figure *3 Flash rod 4 Figure

Claims (1)

[Claims] In a recording method that includes a plurality of heating element group blocks each having a plurality of heating elements, each heating element block having a heating element corresponding to information to be recorded drives the heating element to record information on a recording medium, comprising a selection means for selecting a plurality of heating element blocks in which the total number of heating elements to be driven is within a certain number corresponding to the drive current capacity of the heating elements from blocks having a small number of elements to be driven;
A recording method characterized in that the heating elements of the selected plurality of heating element blocks are collectively driven.