JPS5959464A - Printing-controlling system - Google Patents

Abstract

PURPOSE:To enable to prevent burn-out of a coil in a printing head from occurring and to maximize printing speed, by a method wherein printing quantity and non-printing time during printing are grasped every moment, in a dot impact printer. CONSTITUTION:When receiving printing information (a) into a dot line memory 5, a printed dot factor for each dot line is detected by a circuit 6, and is weighted (d) by a printing condition, for example, (printed dot factor)/(dot line). Non- printing rest time (b) is counted, and is weighted by a circuit 7. The thus weighted outputs are subjected to addition or subtraction in a calculating circuit 8, and a calculation output is compared with the weight of the number of printable dots in a comparing circuit 9, and a printing operation is controlled by an output from the circuit 9. Accordingly, dynamic conditions of printing, namely, printing quantity and non-printing time are grasped every moment, burn- out of the coil in the printing head can be prevented without any lingering design or any excessively long printing time, and printing speed can be maximized.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to a printing control system that prevents coil burnout in printing devices such as Tonotoy/Pact printers and maximizes printing speed.

(b) Prior Art and Problems Print heads used in Tonotoy/Bakuto printers generally have a plurality of wire drive magnets 1 arranged on the circumference as shown in FIG. The tip of 2? , by arranging the dots vertically with respect to the dot line direction 4 using the guide plate 3 as shown in FIG.
Printing is performed by scanning the dot line direction 4 while the tip of the wire 2 impacts the paper surface. In addition, as shown in Fig. 2, the print head, in which the tip of the wire 2 is arranged at intervals of multiple dots in the horizontal direction with respect to the dot line direction, swings, and one dot is There is a method of holding and printing.

The print head has, for example, 9 to 24 wires 2 and coils, so when printing at maximum load (solid black paulownia), the print head will become hot due to the heat generated by the coils and the wires 2. This will cause the coil to burn out. In order to prevent this, even the highest load printing should be done. When an overload condition is detected, printing may be performed in several batches to distribute the load over one printing period.

In the former case, there is no redundant design, and in the latter case, when the printing amount for 1"L1 line is received, when the printing amount set to distribute the load is detected, the printing Since the speed is controlled to be reduced by half, for example, there are problems such as not being able to perform optimal printing control.

(c) Purpose of "Printing" The purpose of the E8Lj is to control the print head's coil firing by grasping the dynamic state of printing, that is, the amount of printing during printing and the non-printing time from time to time. An object of the present invention is to provide a printing control method that controls printing speed to maximize it.

(d) Structure and object of the invention According to the present invention, when printing information using a dot impact printer, it is possible to determine the printing dot rate that can be printed continuously during printing and the printable tons 1 for maximum load printing. In the printing control force type, which prevents coil burnout of the print head, in addition to receiving the printing information in the tontline memory, there is also a circuit that detects and weights the printing dot rate of each dot line of the printing information, and a circuit that stops non-printing. Count time L,
Compare the circuit for subtraction and the two arithmetic circuits (operation 4c1 circuit that adds and subtracts the output of the 1-digit circuit and the output of the operation circuit with 11, which is the number of printable dots when printing in the most negative direction). 1
This can be achieved by providing a printing control system whose main feature is to provide a circuit for each circuit and control the printing operation based on the output of the comparison circuit.

(el　Embodiments of the invention Examples of the present invention will be described below.

In general, in order to prevent coil damage, printing corrosion is
The following two matters are stipulated.

(1) Printing dot rate that allows continuous printing (even if printed permanently, coils will not burn out if below this rate).

(2) Number of dots that can be printed during M load printing (if black printing continues for 6 times, 4'J dots can be printed in succession).

When printing, when printing information is received in the dot line memory, it is detected whether or not it is necessary to print the number of dots to be printed, and the printing speed is controlled by applying the printing dot rate. However, dots are actually printed only during printing time, and are not printed during Hcm') time or when the printer is not in operation. The printing speed is controlled based on the print dot rate of the number of print dots when print information is received, without grasping the dynamic state in which dots are not printed. Therefore, more efficient printing can be achieved by checking the dynamic state and controlling the printing speed.

Therefore, in the present invention, from the above points (1) and (2), a method is adopted in which optimal control is performed while sequentially converting the weighting of printing amount and non-printing time.

FIG. 3 is a control circuit block diagram of one embodiment of the printing control system for the print head of the present invention.

In the figure, when printing information is received in the dot line memory 5, a circuit 6 detects and weights the printing dot rate of each dot line of the printing information, a circuit 7 counts and weights the non-printing pause time, and the circuit 2 The two weights are circuits 6 and 7.
An arithmetic circuit 8 for adding and subtracting the outputs of , and a comparison circuit 9 for comparing the output of the arithmetic circuit with the weight of the number of printable dots at the time of maximum load printing are provided, and the output of the comparison circuit is used to perform the inkuri operation. Control.

As an example, printing dot 1 (25%) capable of continuous printing, printable tons at maximum load printing (2000 dot line)
Think about the field.

Regarding the printing dot rate and pause time of the famous dot line,
For example, as shown in Table 1 below, the weights are adjusted depending on the printing situation.

However, if the line side becomes negative, it is regarded as 0.Table 1 From the condition that it is possible to continue printing up to 2000 dot lines when printing the most negative 1 town, 2000X3 (weight) = 6000, that is, if the total becomes 6000, it is necessary to stop at an appropriate time. 11J+ (
9i+for example], OOO Doratra 4f) allows reprinting (with a weight of 5000).

In Table 1 above, for example, the printing dot rate is 25 per line.
% or less, the weight is 0, so printing can be performed continuously as if no dots were printed.

Further, when the printing dot rate is 25 to 50%, the number of dots is 1, the weight is 2000, and continuous printing can be performed up to the maximum load printing of 6000. In addition, the pause timer counts the time when no dots are printed when the printer is not operating, such as when paper is fed, and the pause time is equivalent to 1 dot line printing I] and lJ.
The weight is subtracted by -1, the amount of printing during printing and the non-printing time are grasped from time to time, and the printing operation is controlled so as to perform the printing operation at the time when the amount of printing with the highest load is reached.

As mentioned above, by paying attention to the amount of printing during printing and the non-printing time, it is possible to
Alternatively, optimal printing can be performed during maximum load printing without traversing the coil, without impairing optimal printing control.

Furthermore, by subdividing the weighting, more optimal printing can be achieved without having to cross the coil.(f) The effects of the invention will be explained in detail! As shown in IJ, the #J delivery control method of the present invention grasps the dynamic state of printing (that is, the amount of printing during printing and the non-printing time) from time to time, thereby reducing the redundant film force 1 and printing Moema r, without any gap,
0, which prevents the coils of the print head from burning out and allows for maximum printing performance.

[Brief explanation of the drawing]

Figure 1 (a) is a front view schematically showing the print head.
Figure (b) is a schematic diagram explaining the printing method using the print head of Figure 1 (a), Figure 2 is a schematic diagram explaining the printing method of another head, and Figure 3 is a schematic diagram explaining the printing method of the print head of the present invention. 1 shows a control circuit block diagram of an embodiment of a print control method for a head. FIG. In the system, 5 is a dot line memory, 6 is a circuit for detecting and weighting the printing dot rate v1.7 is a circuit for counting and weighting the interval between idle rings, 8 is an arithmetic circuit, and 9 is a ratio soft circuit.

Claims (1)

[Claims] When printing information with a dot impact printer, the printing control method determines the printing dot rate that can be printed continuously during printing and the number of printable dots during maximum load printing to prevent coil burnout of the print head. When receiving the printing information into the dot line memory, the printed dot rate of each dot line is detected and weighted by a circuit that counts and weights the non-printing pause time, and the two weights are calculated by the output of the circuit. and a comparison circuit that compares the output of the calculation circuit with the weight of the number of printable dots at the time of maximum load printing, and the printing operation is controlled by the output of the comparison circuit. Printing control method.