JPH0433862A - Recording method - Google Patents

Abstract

PURPOSE:To enable recording to be performed by discharging ink without using a micro-nozzle by a method wherein ink is replenished in a liquid state to a vibratile filament material so as to stick thereto, a side wave is generated at both ends of the filament material with a vibration driving source, an ink drop is discharged at a position where two side waves overlap each other to be amplified, and a recording medium is recorded on. CONSTITUTION:Since ink A flows down to a lower ink reservoir 3b along a filament material 2 from an upper ink reservoir 3a under a still state of (a), the ink is replenished so that the ink A may stick to an overall length of the filament material 2. Therefore, when a pulse is applied to vibration driving sources 4a, 4b at both ends, the filament material 2 comes to be of a vibration initial state as given in (b), and respective side waves W1, W2 are generated at both ends of the filament material 2 at that time. Then, since two side waves W1, W2 overlap each other at a specific position of the filament material 2 to be amplified in discharge of (c), a large side wave W3 is generated. Therefore, a portion of the ink A becomes an ink reservoir B to be discharged sidewards, which is stuck to recording paper 5 to be recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an ink-type recording method applied to recording apparatuses such as copy machines and computer terminal equipment.

2. Description of the Related Art Conventionally, printers used as terminal recording devices for computers and the like can be broadly classified into electrostatic, thermal transfer, inkjet, and dot impact recording methods.

Problems to be Solved by the Invention However, although the electrostatic recording method described above has a fast recording speed, it has the drawbacks of large equipment and high cost, while thermal transfer recording method is low in price but has high running costs. There are drawbacks. In addition, although the running cost of the inkjet recording method is low, since ink is ejected from a small aperture, it is likely to cause troubles, and the size of the attached equipment is required to avoid these problems. The dot impact recording method has drawbacks such as noise and low image quality.

By the way, due to its small size, low running cost, image quality comparable to inkjet, and low noise,
The most promising recording method is the inkjet method, but the disadvantage of the inkjet method is that the ink is ejected from very small holes (nozzles) of several tens of micrometers in size, so the nozzles are easily clogged and the recording is likely to become unstable. Therefore, there are problems such as the need for peripheral devices to prevent this.

SUMMARY OF THE INVENTION In view of the problems of conventional recording methods, an object of the present invention is to provide a recording method that can perform recording by ejecting ink without using minute nozzles.

Means for Solving the Problems In order to achieve this object, the present invention replenishes ink in liquid form to a vibrating wire member, and applies transverse waves to both ends of the wire member using a vibration drive source. This paper proposes a recording method in which ink droplets are recorded on a recording medium by ejecting ink droplets at a position where two transverse waves overlap and are amplified.

According to the above-described method of the present invention, two transverse waves are generated by vibrating both ends of the ink-replenished wire material simultaneously or with a predetermined time difference by the vibration drive source, so that a predetermined transverse wave near the center of the wire material is generated. Since ink droplets can be ejected from certain positions to record on a recording medium, nozzle clogging can be prevented.

Example Embodiments of the present invention will be described in detail below with reference to the drawings.

FIGS. 1A to 1C are diagrams schematically showing the principle of ink ejection according to the recording method of the present invention. The basic configuration of the head applied to the recording method of the present invention in the initial stationary state shown in FIG. 1A will be described. The recording head has a vibrating linear member 2. An ink reservoir 3a is provided on one side of the M strip 2 as a means for replenishing liquid ink A. In the method shown in the figure in which ink A is replenished by natural fall, the strip 2 is installed vertically. A replenishing ink reservoir 3a is provided above the filament 2, and an ink reservoir 3b for receiving excess ink A is provided below.

Furthermore, vibration drive sources 4a and 4b (for example, piezoelectric elements) are arranged at both ends of the wire material 2 in such a manner that they can vibrate both ends of the wire material 2 using pulse signals to generate transverse waves. Recording paper 5 (recording medium) is arranged in parallel with the filament 2 in the vicinity of the filament 2 along its longitudinal direction.

Since the illustrated recording device has such a structure, the first
In the stationary state shown in Figure (a), ink A flows from the upper ink reservoir 3a through the filament material 2 and flows down to the lower ink reservoir 3b, so the ink A is supplied so that it adheres to the entire length of the filament material 2. will be done.

Therefore, when a pulse is applied to the vibration drives fi4a and 4b at both ends, the filament 2 enters the initial vibration state as shown in FIG. , is generated. In this case, the transverse waves W, , W
, are not strong enough to repel the ink A, and these transverse waves W, , W, proceed from both ends of the filament 2 toward the center. At the time of ejection as shown in FIG. 1(C), the two transverse waves W, , Wx overlap and are amplified at a predetermined position of the filament 2, so a large transverse wave W is generated. Therefore, due to the transverse wave W3, a part of the ink A becomes an ink reservoir B, is ejected in any direction, and adheres to the recording paper 5 for recording.

Therefore, by applying pulses to the vibration drive sources 4a and 4b at both ends of the filament 2, an ink ejection state can be created at arbitrary time intervals.
, 4b match, the ink droplet B will be ejected at the center point of the filament 2. Furthermore, if the pulse application times are different, the corresponding positions other than the center point of the filament 2 will be obtained. In other words, in the recording apparatus according to the present invention, by controlling the time applied to both ends, the ink ejection section can be moved to any location and ink recording can be performed freely in the longitudinal direction of the recording paper 5. . Note that in an actual printer, if the ink A is ejected while moving the gutter 1 left and right to record as shown in FIG. 1, a width close to the length of the filament material 2 can be recorded at one time.

FIGS. 2(a) to 2C) are cross-sectional views showing specific examples of the wire material 2 applied to the recording method of the present invention, and the wire material 2 with a circular cross section as shown in FIG. 2(a), or , Φ) with a rectangular cross section.

That is, according to these single-wire wire members 2, the ink A is adhered to the entire circumference by natural falling. Also,
In the case shown in FIG. 2(C), the wire material 2 has a depression 2b formed on one side of the wire material 2a, and the ink A is formed in this depression 2b.
can be stored. Therefore, in this structure, although the ink A can be supplied by capillary action, it is clear that the ink reservoir may be located at one location at the lower end.

Note that as the wire material 2, any material that is resistant to stress such as metal can be used, and in particular, if it is conductive,
Since it can be heated by passing an electric current through it, it can be used not only for liquid ink but also for true melt ink. Further, in the above embodiment, although the vibration drive sources 4a and 4b using piezoelectric elements are illustrated, a drive device that can generate transverse waves in the filament 2, such as a drive device that uses a magnetic field, may also be used.

Effects of the Invention As explained above, the recording method according to the present invention performs recording by ejecting ink using transverse waves caused by vibrations of the wire material, so there is no ink clogging and stable recording is possible at all times. . Further, in the present invention, since minute nozzles such as inkjet two are not used, a device for preventing nozzle clogging is not required, and the structure of the recording head can be simplified.

[Brief explanation of drawings]

FIGS. 1(a) to 1(c) are principle diagrams of a recording apparatus using the recording method of the present invention, and FIGS. 2(a) to 2(c) are
C) is a sectional view of a specific example of a linear material used in the recording head. 20061. , wire material, 4a, 4b...vibration drive source, 5...recording paper (recording medium), A...
・・Ink, B・・・・Ink eraser, W, ,W,・
...Yokonami, W!・Old...Large transverse wave. Name of agent: Patent attorney Shigetaka Awano (1 person) Figure 1 Figure 2 (a,) (b ・)

Claims (3)

[Claims] (1) Supply ink in liquid form so that it adheres to a vibrating linear material, generate transverse waves at both ends of the linear material using a vibration drive source, and drop ink droplets at the position where the two transverse waves overlap and amplify. A recording method characterized by recording on a recording medium by ejecting. (2) A recording method according to claim 1, characterized in that a time difference is added to the two transverse waves generated by the vibration drive source, and the ink droplet ejection position is moved by controlling this time difference. (3) The recording method according to claim 1, wherein the filamentous material has electrical conductivity that allows it to generate heat when supplied with electricity.