JPH01150553A - Discharge recording method - Google Patents

Abstract

PURPOSE:To enable uniform writing by making the voltage to be impressed on a second row of electrode needles of an electrode head employing two different rows of electrode needles that are disposed in a zigzag fashion greater than that to be impressed on a first row of electrode needles thereof to thereby allow the writing conditions of the first and second rows of electrode needles to conform to each other. CONSTITUTION:The voltage to be impressed on a second row of electrode needles of electrode needles that are disposed in a zigzag fashion is made greater than that to be impressed on a first row of electrode needles of the same electrode needles, and uniform recording is performed. The size of dots written on a recording unit is in proportion to the voltage to be impressed, and the size of dots becomes smaller as the voltage to be impressed decreases. The size of dots 1b can be made larger by increasing only the voltage to be impressed on the second electrode needles without increasing the voltage to be impressed on the first electrode needles, and this allows the size of dots 1a and 1b to balance each other, thereby making it possible to accomplish uniform setting. For instance, in a case where the voltage to be impressed on the first row of electrode needles is set between 40 and 55V, although depending on other conditions such as the configuration of the head, platen pressure, etc., the voltage to be impressed on the second row of electrode needles should be made greater by 5-10V than the voltage set in order to accomplish uniform setting.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a discharge recording method for recording electrical signals on a recording medium.

2. Description of the Related Art In recent years, office automation has required a variety of terminals. Among these, there is a great demand for recording devices that convert electrical signals into visible images, so-called printers, and recording devices using various methods have been produced to date. Recording devices such as discharge recording devices and energization recording devices that conduct electricity through electrode needles are excellent in terms of high speed, record retention, and economic efficiency. However, since these devices have a relatively small resolution of 5 to 6 dots/fl, the print quality is not good. However, there is a strong market demand for printing quality, and even in discharge or current recording devices,
At present, development is being carried out to realize a high resolution of 16 dots/N5 or even higher.

In a recording head for high-density recording, a technique is used in which two sets of electrode needles are arranged in two staggered rows due to limitations in packaging density and other reasons. However, if the electrode needles are divided into two rows, there is a problem in that writing conditions differ between the two rows, making uniform writing difficult.

The present invention relates to the voltage applied to the head electrode needle.

Conventionally, in order to realize a high-density electrode needle row of about 16 needles/l JI electrode needle row, a method of arranging two rows of 8 JI electrode needle rows in a staggered manner has been used. However, in such a structure, since there are two rows of electrode needles, there is a problem in that the electrode needle row in the rear row is influenced by the electrode needle row in the front row, resulting in poor writing conditions.

The conventional discharge recording method described above will be described below with reference to the drawings.

FIG. 2 is a front view of a conventional 16-dot/pitch electrode head. In FIG. 3, the electrode needles 2a and 2b are each 8
The electrode needles 2a and 2b are arranged in a horizontal line at a density of 16 dosoto/+n, and the electrode needles 2a and 2b are arranged in a staggered manner as shown in the figure. This results in a high-resolution electrode head.

FIG. 3 is a sectional view showing the above-mentioned electrode head installed in a discharge printer. The recording medium 5 advances in the direction of the arrow while being pressed against the head 3 by the platen 4. A discharge voltage corresponding to the input signal is applied to the tip of the head 3, and the electrode needle 2a.

From the tip of 2b, the aluminum vapor deposited layer on the recording medium 5 is discharged and a hole is made.

FIG. 4 is a diagram showing the surface of the recording medium 5 subjected to discharge recording. The dot 1a is made by the electrode needle 23, and the dot 1b is made by the electrode needle 2b. If recording is performed with a head such as that shown in FIG. 2, dot 1b will be smaller than dot 1b, and uniform recording will not be possible. This is because the influence of the electrode needle 23 extends to the electrode needle 2b, worsening the writing conditions such as head touch of the electrode needle 2b.

Furthermore, if the voltage applied to the electrode needle is increased in order to make dot 1b larger, dot 1a will also become larger, as shown in Figure 5, and adjacent dots will connect, cutting the conductive layer. If there is, even if an attempt is made to print 1b in the area indicated by the dotted line, discharge will not occur and recording will not be possible. Although the dots are shown as circles in FIGS. 1 and 4, they actually have an irregular shape as shown in FIG. 5.

Problems to be Solved by the Invention As described above, the conventional electrode head configuration has the problem that the electrode needles in the front row affect the electrode needles in the rear row, making uniform recording impossible.

Means for Solving the Problems In order to solve the above problems, the discharge recording method of the present invention applies the voltage applied to the second row of electrode needles, which are arranged in two rows in a staggered manner, to the first electrode. The voltage applied to the stylus row is thicker (to achieve uniform recording).

Operation The present invention corrects the writing conditions of the first row of electrode needles and the second row of electrode needles using the above-described means so that the writing conditions of the first row of electrode needles are the same, and uniform writing is performed without interruption of the conductive layer by writing in the first row. be able to.

EXAMPLE Hereinafter, a discharge recording method according to an example of the present invention will be explained with reference to the drawings.

The head configuration is the same as that described in the description of the conventional example.

However, the cables for supplying the applied voltage are separate for the first and second electrode needle rows.

According to the inventor's experiments, it has been found that the size of the dot written on the recording medium is proportional to the applied voltage, and that the smaller the applied voltage, the smaller the dot. Therefore, if only the voltage applied to the second electrode needle is increased without increasing the voltage applied to the first electrode needle, only the dot 1b will become larger and the dot 1a will be balanced and uniform, as shown in Figure 1. You will be able to print.

Note that when the voltage applied to the first electrode needle row is set between 40 and 55 V, the voltage applied to the second electrode needle row is set to be between 40 and 55 V, depending on conditions such as the shape of the head and the platen pressure. It has been confirmed that uniform printing can be achieved if the voltage is 5 to 10 V higher than the set voltage.

Effects of the Invention As is clear from the above description, the present invention makes the voltage applied to the second row of electrode needles of an electrode head using two rows of staggered electrode needles larger than the voltage applied to the first row of electrode needles. As a result, the writing conditions of the first electrode needle row and the second electrode needle row match, and uniform writing becomes possible.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a recording medium subjected to discharge recording in an embodiment of the present invention, FIG. 2 is a front view of a conventional electrode head for a discharge printer, and FIG. 3 shows a state in which the electrode head is assembled into a printer. 4 is an explanatory view of a conventional recording medium subjected to discharge recording, and FIG. 5 is an explanatory diagram showing an example in which the conductive layer is cut in a conventional recording medium subjected to discharge recording. 1a, 1b...dot, 2a, 2b...
- Electrode needle, 3... Head, 4... Platen, 5... Recording body. Name of agent: Patent attorney Toshio Nakao (1 person) Figure 2
2a, 2b-electrode 2a, 2b
-One-electrode needle Ia--¥t

Claims (2)

[Claims] (1) Using a discharge recording head that is equipped with electrode needles and their support parts and wired so that the electrode needles are arranged in two staggered rows, the voltage applied to the second row of electrode needles is applied to the first electrode needles. A discharge recording method characterized in that the voltage applied to the column is higher than that applied to the column. (2) A patent claim characterized in that the voltage applied to the first electrode needle row is set to 40 to 55 V, and the voltage applied to the second electrode needle row is set to 5 to 10 V higher than the set voltage. The discharge recording method according to item (1).