JPS5920679A - Ink recorder - Google Patents

Abstract

PURPOSE:To easily draw lines of many size varieties by using only one recording pen by a method in which the amounts of ink to be jetted are varied by changing the relative moving speeds of a recording head and a recording paper. CONSTITUTION:When output signal of CPU 41 is given to a power source control circuit 42, high voltage is applied between a recording pen 24 and a feeding roller 32 by a high-tension power source circuit 43, and a magnetic ink is jetted to the recording paper 21. In this case, in CPU41, the size of lines is judged by a plotter control command signal, a signal to set up speeds is sent out to speed control circuits 44 and 46, and the turning speeds of drive pulse motors 31 and 37 in the axial directions of Y and X through motor drive circuits 45 and 47 for Y and X shafts by the circuits 44 and 46. As a result, the relative speeds of the recording paper 21 and the pen 24 are set up to given values according to the sizes of lines to be given by the plotter control command.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording device called a so-called block, in which a recording paper and a recording pen are moved relative to each other to draw a plot.

In recent years, with the development of computer technology, various stand-alone CAD systems have been developed, and their use in the field of mechanical design is rapidly increasing. Tools for processing figures in this CAD system include devices called automatic drafting machines or blocks, and these devices are increasingly being used to automatically draw mechanical drawings at high speed.

Now, in order to draw this mechanical drawing in accordance with the 1JIs drafting standard, it is necessary to prepare and use two to three types of line thickness. Conventionally, plotter recording pens, hole pens, fiber pens, ink pens, and pencil/silver pens have been used, but if you want to use all the line thicknesses with these various pens, the following two methods are available. It was getting worse. The first method is to prepare in advance recording pens of different types and line thicknesses as required, and to use them automatically or manually.

The second method is to use one type of recording pen, and when drawing a thin line, draw a single stroke, when drawing a thick line, draw a double stroke, and when drawing an even thicker line, draw a line slightly offset from the first line. It is a method of overlapping the entire painting, such as double painting.

However, both methods have the disadvantage that they are complicated and cannot be used to draw efficiently. Having such shortcomings was an important problem because it goes against one of the important purposes of CAD systems, which is to speed up processing.

The present invention eliminates these drawbacks, and has a simple configuration that allows one scanning operation with a single recording pen without having to change recording pens or double strokes as in the past. Various thickness? #The aim is to provide an ink recording device that can print the entire image.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

FIG. 1 is an explanatory diagram for explaining the operating principle of an ink recording device that ejects ink, which is an embodiment of the present invention, and (2L) shows the state in which the recording pen of the device is not used. , BL indicates the state in which a line is drawn by flying ink using the same pe/.In the figure, 1 is recording paper, 2 is a bed to which recording paper 1 is fixed along, and 3 is a magnetic fluid inside. an ink reservoir containing body ink 4 (hereinafter referred to as magnetic ink); 6;
is a porous body that prevents the magnetic ink 4 from floating and allows stable ink supply, and is made of a fibrous material in the form of a strip or cotton. Reference numeral 6 denotes an electrode stylus for causing the magnetic ink 4 to fly toward the recording paper 1, and its tip faces the recording paper 1. A magnet 7 is placed near the tip of the electrode stylus 6, and the magnetic ink 4 is supplied to the tip of the electrode stylus 6 by its magnetic force. 8 indicates magnetic ink attached to the tip of the electrode stylus 6. 9
is a high-voltage power supply circuit for applying a high voltage between the electrode stylus 6 and the bed 2 when the magnetic ink 8 flies. 10 is an air vent provided in the ink reservoir 3.

A high voltage is applied between the bed 2 and the electrode stylus 6. At this time, an electric field is generated between the tip of the electrode stylus 6 and the bed 2 due to the high voltage, and a strong Coulomb force acts on the tip of the magnetic ink 8, causing the magnetic ink to move toward the recording paper 1. flies. Flying magnetic ink 1
1 arrives on the recording paper 1 and permeates the recording paper 1 to perform recording.

The amount of flying magnetic ink 11 changes depending on how the magnet 7 applies magnetic force, that is, the magnetic flux distribution near the tip of the electrode stylus 6, and the magnitude of the voltage applied between the electrode stylus 6 and the bed 2.

If these are kept constant, the amount of flying magnetic ink 11 will be approximately constant.

Next, the embodiment will be described in more detail using FIGS. 2 and 3. FIG. 2 is a block diagram of an ink recording apparatus according to this embodiment.

In the figure, 21 is a roll type recording paper, 22 is a supply roll that supplies the recording paper 21, 23 is a take-up roll that winds up the recording paper 21, 24 is a recording pen shown in FIG. 1, and 25 is a recording pair 24fY. Transfer ropes 26 and 27 move the transfer rope 25 in the axial direction, and 28 is a pen holder that is transferred by the transfer rope 25 and holds the entire recording ben 24. 29 is a gear interlocking with the pulley 26; 30
6. is a gear that meshes with and interlocks with the gear 29; 31 is a pulse motor that fully drives the gear 30; D. This is the drive motor for the recording paper 24 in the Y-axis direction. 32 is a transfer roller that transfers the recording paper 212 in the x-axis direction; 33 is provided on the transfer roller 32;
a sprocket that holds the recording paper 21 on the transfer roller 32;
Reference numeral 34 denotes a sprocket hole previously drilled in the recording paper 21 into which the sprocket 33 is inserted. 36 is a transfer roller 32
A gear 36 meshes with and interlocks with the gear 35. A pulse motor 37 drives the gear 36, and a motor drives the recording paper 21 in the X-axis direction.

On the 3rd, it is connected to the I10 connector of a personal computer, minicomputer, etc., and receives plotter control commands consisting of digital signals in ASCII code. The control commands include the type of line to be recorded, such as straight or curved line, solid line or broken line, thick line or thin line, and the XY where the line is located, according to the predetermined IFr-defined grammar. Contains information necessary for drawing, such as coordinate values. 39 is an operation button,
While the I10 connector 38 is used when operating in remote mode, the operation button 39 is used when operating in local mode, and all plotter control commands are specified manually. 4° is the input circuit, I
It also has a buffer memory for all signals from the 10 connector 38 or operation button 39, a means for converting them into plotter control command signals that can be operated by the CPU 41, and an input signal buffer memory.

CPU41 is composed of a microprocessor, and input circuit 4
All the grotter control command signals from 0 are judged and calculated according to a predetermined program, and the outputs are sent to each control circuit.

Reference numeral 42 denotes a power supply control circuit operated by the output signal of the CPU 41, which controls the high voltage power supply circuit 43. The high-voltage power supply circuit 43 is a circuit that applies a high voltage between the recording pen 24 and the transfer roller 32, and is inappropriate for the high-voltage power supply circuit 9 shown in FIG.

Next, the operation of this device will be explained. When recording, Cp
The power supply control circuit 42 receives the output signal from the u41, and in response, the high voltage power supply circuit 43 applies a high voltage between the recording pen 24 and the transfer roller 32, and the magnetic material is transferred from the tip of the recording pen 24 toward the recording paper 21. Ink flies. 44 is C
This is a speed control circuit that operates according to the output signal of the pu 41, is connected to the Y-axis motor drive circuit 46, and controls and fully sets the rotational speed of the drive pulse motor 31 in the Y-axis direction. 46
is also a speed control circuit, and the X-axis motor drive circuit 47
The rotation speed of the drive pulse motor 37 in the X-axis direction is set and controlled. During recording, the CPU 41 determines the thickness of the line using the plotter control command signal and outputs a signal that causes the speed control circuits 44 and 46 to set the speed. 31
The drive pulse motors 31 and 3 in the Y-axis direction and the X-axis direction are driven through the drive circuit 45 and the X-axis motor drive circuit 47, respectively.
As a result, the relative speed between the recording paper 21 and the recording pen 24 is set to a predetermined value according to the thickness of the line given by the plotter control fit (I command).

Although the transport speeds of the recording paper 21 and the recording pen 24 are controlled as shown in FIG. 3, they may be controlled by other methods. Third
The figure is a vector diagram showing the relative transfer speed, where Vx is the transfer speed of the recording paper 21 in the X-axis direction, and vY' is the transfer speed of the recording pen 24 in the Y-axis direction. vX, vY are recording paper 2
are the X component and Y component of the relative speed between 1 and the recording pen 24,
(2) is the rate of synthesis; for convenience, only the first phenomenon is shown.

Here, in order to make V constant in any direction, Vx and Vyk are controlled so that the sum of the squares of Vx and vY is constant, and when changing the thickness of the line, the sum of the squares of Vx and vY is vx and Vyt are controlled to different constant values. In this way, the relative speed between the recording paper 21 and the recording pen 24 can be kept constant in any direction. However, if the variance of the relative velocity with respect to the thickness of the line is sufficiently large, then the relative velocity! Even if the ffi is not made strictly constant, the heddle thickness can be differentiated, so this kind of treatment is not necessarily necessary.

As described above, in this embodiment, when recording a line, all of the ink is ejected from the recording pen at a substantially constant rate, and the relative speed between the recording pen 24 and the recording paper is set according to a command for a predetermined line thickness. You can set the amount of ink that adheres to and permeates into the area, and the thickness of the line to be recorded is completely variable. Therefore, it is possible to draw lines of multiple types of thickness with a single stroke using one type of recording pen. This eliminates the hassle of replacing recording pens and making double strokes as in the past, and simplifies operations when outputting all mechanical drawings using a CAD system or the like. Furthermore, the recording pen only needs to eject ink at a constant rate during the recording period, which simplifies the mechanical configuration of the recording pen and the circuit configuration for ink ejection.

Further, since the recording pen is constructed using magnetic ink and an electrode stylus, it is easy to obtain a constant rate of ink ejection. According to the present invention, since the vertical movement of the recording pen can be eliminated during recording, the recording pen is composed of discontinuous lines such as dotted lines, broken lines, one-dot chain lines, two-dot chain lines, or many short line segments. To make it possible to increase the speed, especially when drawing a figure by using different thicknesses of kW, compared to a conventional device.

As described above, according to the present invention, lines of various thicknesses can be easily drawn with a single recording medium.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the operation of a recording pen in an ink recording device according to an embodiment of the present invention, FIG. 2 is a configuration diagram of the same device, and FIG. It is an explanatory diagram of the amount of related money. 1... Recording paper, 3... Ink reservoir, 4
...Magnetic ink, 6 ... Electrode stylus, End ... Magnet, 9 ... High voltage power supply circuit, 21 ... Recording paper, 24 ... Recording pen, 31 ... Pulse motor, 34 ... Sprocket hole, 33 ... Sprocket, 37.
...Pulse motor, 44.46 ... Speed control circuit, 43 ... High voltage power supply circuit. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure (δ) (b) 0 --- 1 , --- 1 1 1 = 11 11 11 ll 11 11 11 11 1 L- 1 30th

Claims (2)

[Claims] (1) A recording head that ejects all of the ink facing the recording paper, and the amount of ink ejected per time is constant throughout the entire path; a transport mechanism that moves the recording head or the recording paper parallel to the surface of the recording paper; and the transport mechanism. A speed variable means for changing the relative movement speed between the recording head and the recording paper by a mechanism is provided, and by changing the relative movement speed with the speed variable means, ink is ejected per recording length on the recording paper. An ink recording device characterized by completely changing the amount of ink. (2) The recording head includes an electrode stylus, a magnet that is disposed near the tip of the electrode stylus and that supplies magnetic fluid ink to the electrode stylus by magnetic force, and a magnet that applies voltage to the electrode stylus and applies the magnetic fluid ink to the electrode stylus. 2. The print/write recording apparatus according to claim 1, further comprising an ejection means for ejecting all ink onto the recording paper.