JPS6277935A - Drawing device of type photo-composing machine - Google Patents

Abstract

PURPOSE:To simply realize the drawing of an oblique line and an optional graphic by facilitating the simultaneous drives of X- and Y-axes, by possessing the X- and Y-axis drive systems capable of simultaneously moving a light source 2 or a sensitizing material 8 in the X- and Y-axial directions and the micro processor controlling the register giving commands to those drive systems and a data memory. CONSTITUTION:The X- axis and the Y-axis drive systems 10, 12 capable of moving a light source 2 or a sensitizing material 8 simultaneously in the X-axial and the Y-axial directions, the X-axis operation command register 15, the Y axis operation command register 16 giving movement commands to those drive systems, the waiting circuits 22, 23 giving operation commands to the X-axis and the Y-axis operation command registers 15, 16 when DELTAt time has elapsed after a preliminarily setting micro time DELTAt is given, the data memory 19 storing the data of an optional graphic, and the microprocessor 13 controlling the X-axis and the Y-axis operation commands registers 15, 16, the time waiting circuits 22, 23, and the data memory 19 are possessed. Because computing X-axis and Y-axis position and modulation information to the minimum resolution unit given by micro time DELTAt, the drawing of a short segment and the precise setting of drawing position become possible.

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a phototypesetting device, and includes one arc of a circle.

Highlight arbitrary shapes such as diagonal lines, arbitrary curves, dotted lines, chain lines, etc. This invention relates to a drawing device that can draw on cotton. .

[Conventional technology]

4(a) and 4(b) are configuration diagrams showing a conventional phototypesetting device, FIG. 4(a) is a schematic diagram showing the overall configuration, and FIG. 4(b) shows a group of command push buttons on the operating section. show. In the figure, (2
) is a light source, (3) is a reflector, and (4) is a dial on which arbitrary characters, arbitrary figures, etc. are arranged. The light from the light source (2) enters the dial (4) via the reflection lens (3) and converts the luminous flux into a light image. (5) is a photographic aperture, and (6) is a main lens that makes the light image size a predetermined size. (7) is a shutter, which serves to interrupt the light image that is applied to the photosensitive material (8) attached to the cylindrical cylinder. (6) is a CPtJ, (g) is a program memory, and (5) is a motor control synchronization signal generation circuit that generates a synchronization signal to control the motor. (To) is XIi! III operation command register, σQ is Y411
The operation command register operates the X-axis motor (9) via the X-axis driver μq and the Y-axis motor (b) via the Y-axis motor driver (2). Further, (c) indicates a group of command push buttons.

Next, the operation of the conventional device shown in FIG. 4 will be explained.

Assuming that a dotted line is drawn on the photosensitive material (8), the outer part of the board (4) should display a single straight line, and the CP
When the photosensitive material (8) is being moved in the X-axis direction by the motor (9) via the X-axis motor driver 4 (in the X-axis movement command register by the command of Ll), the shutter (7) is opened. .

By closing the light source (2), the light image from the light source (2) is intermittently projected onto the photoreceptor (8) and a dotted line is drawn.

It operates in synchronization with the signal generated from the motor control synchronization signal generation circuit (a) so that the drawing operation on the photosensitive material (8) is constant.

When one line of drawing in the X-axis direction is completed, the Y-axis movement command register operates the motor UU via the Y-axis motor driver (6) to move the photoreceptor (8) in the Y-axis direction.

Since it is a mechanical type according to (7), it cannot operate at high speed, so it is not possible to draw a short total length, and it is difficult to control the movement when the drawing position is precise, and the structure does not allow simultaneous operation.
There were problems such as the inability to draw diagonal lines and arbitrary figures as shown in FIG.

The present invention has been made to solve the above-mentioned problems, and aims to provide an apparatus that can draw arbitrary figures and draw them with high precision.

[Means for solving problems]

The drawing device according to the present invention has X-axis and Y-axis directions that can simultaneously move the light source or the photosensitive material in the X-axis direction and the
Axis drive system, an X-axis movement command register that gives movement commands to these drive systems, a Y-axis movement command register, given a preset minute time Δt, and when the Δt time elapses, the above-mentioned X-axis movement command register, Y-axis movement Equipped with a time waiting circuit that gives operation commands to the command register, a data memory that stores arbitrary figure data, and a microprocessor that controls the X-axis movement command register, Y-axis movement command register, time waiting circuit, and data memory. It is.

[Effect]

The drawing device according to the present invention uses a minute time Δt.

Since the X-axis and Y-axis positions and modulation information are calculated in the given minimum resolution unit, it is possible to draw short line lengths and precisely set the drawing position.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
FIG. 1(a) is a diagram showing the overall configuration, and FIG. 1(b) shows a group of push buttons on the operating section.

In FIG. 1, (c) is a group of conventional command buttons, and (b) is a group of arbitrary figure designation buttons for specifying the type of figure.

The microprocessor (C)'U) a3 has a multiplication function unit (
It has a program memory (b) and a program memory (g) to draw figures. Q9 is a motor speed control data memory that stores data such as the minimum speed, maximum speed, rise characteristics, fall characteristics, etc. of the motor.

(20-1) and (20-2) are arbitrary graphic data memories.

(21-IAin, cos table memory,
(21-2), - are log data memories, and these memories (20-1) (20-2), (21-1), (2
1-2) stores data for graphic generation.

(a) is an X-axis time waiting circuit, and 1 is a Y-axis time waiting circuit, which generates a time waiting signal when driving the motor. In the aQ command register, the Y-axis motor (1υ
make it work.

αη is a modulation command register, which generates an intermittent modulated light flux from a light source (2) via a modulator (υ) according to a control command from the CPU (Lm).The light source (2) is composed of a light emitting diode or a semiconductor laser. .

(3) t4) L5) (Same as shown in Fig. 4, 61 is the anti-reflection dial, photographic lens, and main lens, respectively. (7a) is the shutter, which is similar to the conventional one shown in Fig. 4. It is not intended to create modulated light like a device, but is provided to prevent diffuse reflection of light, but it can be removed.

Next, the operation of the embodiment of the invention shown in FIG. 1 will be explained.

First, a drawing operation is started by operating the arbitrary figure command button group (c) or the command button group (e). Here, a case will be described in which diagonal lines as shown in FIG. 2 are drawn intermittently. The dial (4) displays a single straight line.

When drawing a diagonal line as shown in Figure 2, CPU aJ sets a to
Y-axis data can be easily obtained by multiplying the axis data.

The following operation will be explained with reference to FIG. 2 and FIG. 8, which is an enlarged view of part A of FIG.

The X-axis and Y-axis motors (9) and (11) are composed of pulse motors, etc., and move a certain distance with one movement command.

The X-axis movement is performed by setting a minute time Δtx @ After the set Δtx time, the X-axis time waiting circuit (1) notifies CPUCLI of the completion of the time waiting, and the CPU 13 gives a movement command to the x@IIwJ operation command register (to) and sets Δtx to the X-axis time waiting circuit. Give to the circuit □□□.

Repeat this until you reach the predetermined position.

At the same time as the X-axis is moved, the Y-axis is also moved in the same way, but the Y-axis time waiting circuit ■ (Δty to be set is calculated by adding the above coefficient a to Δtx.
This is the value multiplied by , and is calculated every time the Y-axis time wait is completed.

1 for each completion of time waiting on the X and Y axes, that is, tx.

ty1 point, tX2. Each time the ty2 point is reached, a predetermined modulation switching point (Fig. 2 (7) a, b,
C, d, e#f), and if the modulation switching point has been reached, the contents of the modulation command register ση are changed to switch from on to off or from off to on.

By calculating the Y-axis holding time and modulation information for each movement command in this manner, highly accurate drawing can be obtained.

In addition, the light source (2) is composed of a light emitting diode or a semiconductor laser, and since this light source (2) is electrically modulated, there is no time delay caused by a mechanical shutter as in conventional systems, and the precision is A good drawing can be obtained.

Note that by moving xl r y2 at speed patterns PX and PY preset in the motor speed control data memory QIJ during the start-up and fall periods, respectively, resonance and play in the motor and mechanical system can be prevented. can.

The above explained the case where diagonal lines are displayed intermittently, but since an arbitrary figure can be considered as a collection of line segments, the X axis of the figure decomposed into line segments is stored in the arbitrary figure data memories (20-1) and (20-2). By storing a data group of holding time, Y-axis holding time, and modulation information, and sequentially reading out this data and controlling the motor and light source, it is possible to draw an arbitrary figure.

In addition, (21-1) sin, cos data memory (21-1), log data memory (21-2)
) etc., it is also possible to generate a figure that can be derived by the diagonal 9-circle 1st order calculation using the operation function of the CPU μs and draw it on the photosensitive material (8) in the above-mentioned manner.

In the above embodiment, the photosensitive material was shown to be moved, but the light source may be moved conversely.

〔Effect of the invention〕

As described above, according to the present invention, simultaneous driving of the X-axis and Y-axis can be easily performed, so that it is possible to easily draw diagonal lines and arbitrary figures.

Further, by using a light source capable of high-speed modulation, there is an effect that accurate drawing can be obtained.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a phototypesetting apparatus according to an embodiment of the present invention, FIG. 2 is a diagram explaining drawing of diagonal lines, FIG. 8 is an enlarged view of the section "A" in FIG. 2, and FIG. 4 is a conventional 1 is a configuration diagram of a phototypesetting device of FIG. Symbol tl) in the figure modulates, (2) is the light source, (3) is the reflection space, (4) is the dial, the 15th eye is the light source, (6) is the main lens, and (8) is the photosensitive material. , +91 HaXsuke motor, ut>
It X m motor'HA mJ device, UU is Y
Axis motor, (2) is Yilill motor driver, and cPu. (To) is the X-axis operation command register, α is the Yi operation command register, αη is the modulation command register, (G) is the program memory, 4 is the motor speed control data memory, (2) is the X
The axis time waiting circuit, (to) indicates the Y-axis time waiting circuit, (b) indicates b1 for specifying an arbitrary figure, and (a) indicates the command 1ffiN.

Claims (2)

[Claims] (1) A light source, a dial on which predetermined characters are arranged, a lens system for enlarging or reducing the light image of the light from the light source transmitted through the dial to an arbitrary magnification, means for modulating the light image, and A photosensitive object on which a light image modulated by the modulation means is projected and drawn, an X-axis and Y-axis drive system that can simultaneously move the light source or the photosensitive object in the X-axis direction, and an X-axis that gives a movement command to the X-axis drive system. Axis operation command register, Y-axis operation command register that gives a movement command to the Y-axis drive system, a preset minute time Δt is given, and when the Δt time elapses, the X-axis operation command register and Y-axis operation command register are set. A time waiting circuit for giving a motion command signal, a data memory storing arbitrary figure data, and a microprocessor for controlling the X-axis motion command register, the Y-axis motion command register, the time waiting circuit, and the data memory; A drawing device for a phototypesetting apparatus, which draws an arbitrary figure on the photosensitive material by simultaneously moving a Y-axis and a Y-axis drive system and by intermittent light from a light source. (2) A phototypesetting apparatus according to claim 1, characterized in that a light emitting diode or a semiconductor laser is used as a light source, and the light source is controlled on and off by an electric signal from a microprocessor. drawing device.