JPH02212198A - Printing head y-axis moving type computer drafter - Google Patents

Abstract

PURPOSE:To simply prepare a large drawing by a method wherein a printing head is separated from the position corresponding to a platen roller to be also moved in parallel to a Y-axis direction to cover the certain area of the surface of fixed paper and the entire surface of the paper is covered with an area several times the area to perform drawing. CONSTITUTION:A printing head part 1 has a feed apparatus of an X-axis direction and corresponds to the surface of the paper bonded to the drawing plate of a drafter. A Y-axis drive part 2 of a Y-axis direction corresponds to the rotation driving of a platen roller. A Y-axis sectional drive 3 is a parallel moving mechanism making a Y-axis having a length several times a unit being a range capable of being covered with a usual printer possible. An X-axis sectional drive 5 is a parallel moving mechanism for making an X-axis having a length several times the X-axis covered with the printing head part 1 possible. An X-axis guide rail 6 guides the X-axis sectional drive 5 and can be constituted in various forms from one nearly horizontal to one nearly vertical like a drafter.

Description

[Detailed Description of the Invention] (a) Industrial Application Field This invention aims to realize CAD at a lower cost, and allows large-scale drawings to be created more easily than with an XY plotter (oral CAD). ) Prior art With conventional CAD, large drawings had to be created using a large and expensive XY plotter.

(c) Problems that the invention aims to solve When drawing drawings on a personal computer, it is common to use an XY plotter, which requires a separate device in addition to the printer, which is troublesome as the output bar is duplicated. Plotters also have a pen with a special function, and generally have not made as many advances as printers.

Further, in a large XY plotter, Y-axis feeding is paper feeding using a platen roller, which is not desirable in terms of accuracy.

(d) Means for Solving the Problems The present invention will be explained based on the drawings. In FIG. 1, this is an overall configuration diagram, and 1 is a printer head section. This is exactly like a normal printer and has a feeding device in the X-axis direction. The head itself can be of various types, such as a wire dot or an inkjet head. Moreover, this does not correspond to the paper surface fed by the platen roller as in the past, but corresponds to the paper surface affixed to the drawing board of the drafter.The reference numeral 62 corresponds to the Y-axis drive unit in the Y-axis direction, and the conventional platen roller does not correspond to the paper surface fed by the platen roller. This corresponds to rotational drive. This driving range is also assumed to cover approximately the driving range of a platen roller of an ordinary printer.

3 is a Y-axis sectional drive, which is a parallel movement mechanism that allows the Y-axis to be several times longer than the range covered by a normal printer. 4
is a Y-axis guide rail, which guides the Y-axis sectional drive 3.

5 is also an X-axis sectional drive, and the X-axis is several times the length of the X-axis covered by the printer head 1.
It is a parallel movement mechanism to enable the axis. 6 is an X-axis guide rail, which guides the X-axis sectional drive 5.

7 is the main body of the computer. 8 is a keyboard. 9
is a display, which is made up of CRT, liquid crystal, etc. Reference numeral 10 denotes a drawing board, which can be configured in various shapes, from a nearly horizontal board like an ordinary office desk to a nearly vertical board like a drafter.

If it is an office desk type, you can create small drawings in one section while doing normal office work in the other empty sections, making it suitable for small spaces.

Not only one printer head but also a plurality of printer heads can be operated in parallel to increase the speed, and the - section head can be used only for characters to improve usability.

Also, if you create a document in some sections while drawing in another section, there is no fundamental problem, although some software measures are required.

(e) Various types of functional printers have been well developed and developed, and there are even color printers. The present invention effectively utilizes this for drawing creation.

In the present invention, it is clear that CAD for each section can be executed without any problems, but there are problems in precisely combining the drawings for each section with each other and drawing drawings at the boundaries between sections.

First, the precise combination of drawings for each section is determined by the accuracy of the Y-axis sectional drive 3 and the X-axis sectional drive 5. However, the required accuracy is the positional accuracy of the lines in the drawing, which is separate from the commands of the NC machine, so 1/10 mm is sufficient. For this reason, due to the precision of recent machine tools, the Y-axis guide rail 4,
It is sufficient to manufacture the shaft guide rail 6.

The movement of the printer head for each section is a fixed distance from one fixed point to another fixed point, which corresponds to the pitch of the section.The fixed points are made by providing a precise notch in the guide rail and fitting it into it. Since the precise position can be maintained using a dowel pin or the like, manual handling is sufficient. However, in some cases, it is extremely easy to automate using an electric motor.The next boundary between sections is that the ranges overlap for a short distance.
It can prevent falling off. In this case, some software measures are required, but there is no problem as it is not a fundamental change.

(f) Effects of the Invention One of the reasons why CAD has not yet become widespread among only a few designers is that the equipment is expensive and complicated, but with the present invention, drawings and documents can be It can be processed by a printer with the same output device, can be placed in a corner of an office desk, feels similar to a conventional drawing board, and is inexpensive, promoting its widespread use.

[Brief explanation of the drawing]

Claims (1)

[Claims] A printer that separates the computer's printer head from the platen roller and moves it parallel to the Y-axis to cover a certain area of a fixed paper surface, and then covers the entire paper surface with several times this area. Head Y
Axis-moving computer drafter