JPS6252416A - Printer plotter - Google Patents

Abstract

PURPOSE:To make it possible to clearly print a character string even if no special control system is used, in an device using a wire dot printer, by adding a blank code to the head of the character string when the character row is printed. CONSTITUTION:In a printer plotter using wire dot printers 6-8 as a printing mechanism, when a character string is printed on a recording medium 4, one block code is added to the head of the character string by CPU1' to start printing with a blank. By this method, because the distortion of the head character due to a delay in the rising of the wire dot printers can be eliminated by the blank, the clear character string can be printed starting with the first character even if a slow-up control system is not used.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application This invention relates to a printer plotter used in a material testing machine for examining various material properties (eg, load-elongation properties).

B. Prior art and its problems FIG. 2 is a schematic diagram showing an example of a conventional printer plotter for a material testing machine. In the figure, the CPU 1 controls the Y-axis drive pulse motor 2 according to the elongation of the test piece (not shown).
Rotate. As a result, the chart paper 4 wound around the drum 3 is sent in the Y-axis direction. Along with this, C.P.
U1 drives the X-axis drive pulse motor 5 according to the load applied to the test piece. This rotates the pulley 6 and drives the wire 7. The wire 7 moves the print head 8 in the X-axis direction. Therefore, on chart paper 4,
A load-elongation curve is drawn that represents the load in the X-axis direction and the elongation in the Y-axis direction.

By the way, the above-mentioned printer plotter has a function of printing the load/elongation values at any point during the test on the load-elongation curve for convenience of later test analysis. Therefore, a wire dot printer capable of printing characters is used as the print head 8. As is well known, wire dot printers print characters by dividing them into a plurality of dot matrices. For example, if the print head 8 has a 7-dot print wire and one character is represented by a 7 x 5 dot matrix, then in the interrupt routine of the CPU 1 that controls the printer plotter, one step to the right is printed at a fixed time. After moving the pad, hit the appropriate dot among the seven vertical dots, and repeat this five times to print one character.

However, when printing character strings etc. at high speed, the best printing of the character string may occur due to a misstep drive axis of the X-axis drive pulse motor 5 at the start of printing, a delay in the rise of the pulley 6, wire 7, etc. There was a risk that the characters would be distorted as shown in FIG.

Therefore, as shown in FIG. 4, conventional practice has been to slow down the pulse speed to the X-axis drive pulse motor 5 at the start of printing, thereby solving the above problem. However, if this slow-up control method is adopted,
There was a problem in that the control of the printer plotter was complicated.

Means for Solving the C1 Problem This invention was made to overcome the above-mentioned problems, and it is possible to clearly print from the first character of a print character string without using a slow-up control method. The purpose is to provide a printer plotter that can

In order to achieve the above object, the printer/plotter for a material testing machine according to the present invention adds a blank code to the beginning of a printed character string, and then prints regular characters.

D. Embodiment FIG. 5 is a diagram showing a schematic configuration of an embodiment in which the present invention is applied to a printer plotter for a material testing machine. In the figure, the configuration of this embodiment is almost the same as the conventional example shown in FIG.
The number has a different operating program.

As shown in FIG. 1, the CPU 1' adds a blank code (a meaningless symbol as a character) to the beginning of the print character string, and controls the print head 8 to start printing from the blank code. After that, CPU1' print head 8
to print regular characters (A, B, C, etc. in the illustration). As a result, the driving of the X-axis drive pulse motor 5 is in a steady state by the time of printing the next printed character of the blank code, so that accurate characters can be printed from the next character of the blank code. In other words, misstep drive of the X-axis drive pulse motor 5 at the start of printing, delay in the rise of the pulley 6, wire 7, etc. are all absorbed when printing a blank code, and do not affect the start of printing of regular characters. There isn't.

In the above embodiments, the case where the present invention is applied to a printer plotter for a material testing machine has been described, but it goes without saying that the same effect can be achieved even when the present invention is applied to other printer plotters having wire dot printers. It is.

As described in detail of the E8 invention, according to the invention, printing can be clearly performed from the first character of a print character string without using a slow-up control method.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of character string printing by a conventional printer-plotter and an example of printing by a printer-plotter according to an embodiment of the present invention. FIG. 2 is a schematic configuration diagram showing an example of a conventional printer plotter. FIG. 3 is a diagram showing the first embossing character in a character string printed by a conventional printer/plotter. FIG. 4 is a graph for explaining a slow-up control method used in a conventional printer/plotter, and shows the speed of pulses applied to the xmge pulse motor 5 over time. FIG. 5 is a diagram showing a schematic configuration of an embodiment of the present invention. 1'...CPU 2...Y-axis drive pulse motor 3...Drum 4...Chart paper 5...X-axis drive pulse motor 6...Pulley 7...Wire 8...・Print head patent applicant Shimaoki Seisakusho Co., Ltd. Figure 1 Figure 2 Figure 5 Figure 4 - Start of E shift

Claims (1)

[Claims] A printer plotter that uses a wire dot printer as a printing mechanism, and when printing a character string on a test paper, a blank code is added to the beginning of the printed character string, and then regular characters are printed. A printer plotter characterized by the following features: