JPS6016645B2 - Ruled line control method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling line drawing when, for example, a phototypesetting device performs line drawing.

Traditionally, line drawing is often done manually using a ruler and a crowbar, and recently various automatic devices for drawing lines have been announced, but the control methods for these devices are all based on hardware. This has the disadvantage that the circuit becomes complicated and it is difficult to expand the specifications of the device.

It is also possible to create control sequences for these devices using only software, but in that case the processing time will be longer and
It has the disadvantage that it is very short and it is difficult to print ruled lines intermittently. This invention was made to eliminate these drawbacks, and provides a simple control method that effectively combines software and hardware and allows for easy expansion of specifications.

FIG. 1 is a block diagram showing one embodiment of the present invention, in which 1 is a CPU that controls the entire device, 2 is an output register that temporarily stores commands from the CPUI, and 3 is a block diagram showing an embodiment of the present invention.
4 is a comparator that compares the output register information with the current position register information, 5 is a flip-flop, and 6 is a ruled line register. 7 is a shutter gate, 8 is a register for motor control, 9 is a parallel-to-serial converter (hereinafter referred to as a P/S converter), 10 is a pulse motor, 11 is a sensitive material drum, 12 is a serial-to-parallel converter vessel (hereinafter referred to as S/
P converter).

FIG. 2 is an operation time chart showing the operation of the embodiment shown in FIG. 1, and is a diagram showing an example of the movement speed of the photosensitive drum, the ruled line drawing and its seat, and the moving speed of the photosensitive material drum.

The operation of the embodiment shown in FIG. 1 will be explained with reference to FIG.

In this embodiment, the line drawing is performed by turning on or off the light emitted onto the photosensitive material rolled up on the rotating photosensitive material drum 11 by means of the liner plate 7. The seat mark indicates the rotating position of the photosensitive material drum 11. When the ruled line switch is turned on, the rattan drum 11 rotates backward by BA, and then starts rotating in the forward direction. TA for point C to J for the position information for the line guide.
The comparator 4 compares the current position of the sensitive material drum 11 with the ruled line TAB information from the CPUI while the sensitive material drum 11 is rotating, and uses the output of the comparator to set the ruled line TAB information as BI to TAB8. On-control and off-control of the printer 7 are carried out, and in the example shown in the figure, the lines CE, FG, and IJ' are drawn, and after passing the J point, the photosensitive material drum 11 overruns to the K point and stops. The reason why the photosensitive drum 11 is moved back from point B to point A and overrun to point K after passing point J is to keep the speed of the photosensitive drum 11 constant between points C and J as shown in the lower part of FIG. This is to keep it safe. Next, an embodiment of the present invention will be explained in more detail with reference to FIG. When the ruled line switch is turned on, the amount of backing of the sensitive material drum 11 is given to the output register 2 by the CPU, and this backing signal passes through the motor control register 8 and is converted into a motor control signal by the P/S converter 9. , the motor 10 is driven to apply a backing amount to the photosensitive material drum 11. Next, the CPUI is the second
The amount of rotation of the AK shown in the figure is calculated, and the motor 10 is driven to rotate the photosensitive material drum 11 in the forward direction using the same procedure as when applying the back amount to the photosensitive material drum 11 described above. After the sensitive material drum 11 starts rotating in the direction of Masaman, the CPU
inputs the positional data of the point at which a ruled line is first drawn, that is, the positional data of point C in FIG. 2, to the output register 2 as data m. ．． On the other hand, the amount of rotation of the photosensitive material drum 11 is always input from the input signal of the motor 10 to the current position register 3 via the S/P converter 12 as current position information data n. Comparator 4 compares the above data m and n, m=
Flip when it reaches n. A trigger is given to the flip-flop 5, and the output of the flip-flop 5 passes through the ruled line target gate 6, turns on the ruled line target gate 7, and starts forming a ruled line. When the relationship between the ruled line position data m and the current position data n becomes m<n, the comparator 4 immediately requests the CPUI for the falsification data m' of the position where the ruled line ends, that is, point E in the example of FIG. The position data of m' is given to the comparator 4 via the output register 2 from the CPUI. When the sensitive material drum 11 rotates further and the current position data n increases and becomes m'=n,
Similarly to the above, a trigger is applied from the comparator 4 to the flip-flop 5, and the flip-flop 5 is inverted to turn off the ruled line shirt gate 7 via the ruled line shirt gate 6. By repeating the steps described above, a line drawing as shown in the example of FIG. 2 is performed. In the above embodiments of the present invention, a case has been described in which a ruled photosensitive material is rolled up on a drum and rotated, but it is possible to use various mechanisms for moving the photosensitive material. Not even.

Therefore, it is possible to draw ruled lines not only in the machine direction but also in the vertical direction, in both forward and reverse directions, or in a combination thereof. Furthermore, in the above embodiments, the case where ruled lines are drawn by projecting light onto a sensitive material has been described, but it is to be understood that the present invention can be applied to other ruled line methods, such as electrostatic method, discharge method, and various other printing methods. Not even. Furthermore, in the embodiment shown in FIG. 1, the sensitive material drum 11 rotates and the position of the ruled line sheet 7 is fixed, but generally, for fog line drawing, a light sensitive material and recording on this sensitive material are used. The method of the present invention provides a general method for controlling the operation of the print head in relation to this relative position. As described above, the present invention has the advantage that ruled lines of any length, interval, and number can be drawn at high speed by a simple combination of software and hardware.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention, and FIG.
The figure is an operation time chart showing the operation of the embodiment shown in FIG. In the figure, 1 is a CPU, 2 is an output register, 3 is a current position register, 4 is a comparator, 5 is a flip-flop, 6 is a gate for the ruled line shutter, 7 is a gate for the ruled line shutter, 8 is a motor control signal register, 9 is a P/S converter, 10 is a motor, 1
1 is a sensitive material drum, and 12 is an S/P converter. Figure lFigure 2

Claims (1)

[Claims] 1. A ruled line, which has a light-sensitive material and a recording head for recording on the light-sensitive material, and draws ruled lines on the light-sensitive material by controlling the recording head in relation to the relative positions of the light-sensitive material and the recording head. In the document control method, detecting the relative position;
The step of outputting ruled line position data from the CPU and temporarily storing it, comparing the temporarily stored ruled line position data with the above relative position, controlling the operation of the recording head based on the comparison result, changing the above relative position, and temporarily storing the ruled line position data. A ruled line drawing control method comprising the step of updating stored ruled line position data.