JPS6157346A - Manufacture of nozzle for injection of very small quantity of article - Google Patents

Abstract

PURPOSE:To reduce production cost and to make post-treatment unnecessary, by a method wherein after a secondary metallic deposit has been formed on exposed positions of a primary metallic deposit and stainless steel wire, the metallic deposit is peeled off from a base and then the stainless steel wire is pulled out of the metallic deposit. CONSTITUTION:An oxide film is formed on the surface of exposed nickel corresponding to an opaque part of a pattern film, an oxide film part 10 is removed through aqueous solution of hydrochloric acid, a secondary metallic deposite 6 is formed by applying electrodeposition again to the same in a suflamic acid nickel plating tank under the same terms as primary plating which is made to adhere closely to a primary metallic deposit 2. Simultaneously with the above a stainless steel wire 3 is covered, the metallic deposits 2, 3 are peeled off from a base 1 by releasing finally fixation of the stainless steel wire 3 and a nozzle A is completed by pulling out the stainless steel wire 3.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a nozzle with a fine pore diameter used in an inkjet printer for printing and the like.

Generally, drawn tubes are used for inkjet printing, but they cannot be processed into micropores with a diameter of φ0.05 am or less, making them unsuitable as nozzles for ejecting small amounts of ink. Therefore, methods have been proposed, such as processing the metal hole shape using a laser beam, or nickel-plating the gold B wire and corroding and melting only the gold H wire after electrodeposition, but the former method requires high manufacturing costs, and the latter method requires high production costs. .

Even if there were, there was a problem in that the manufacturing process would be complicated due to the need for corrosion treatment after processing.

The present invention has been made in view of these points, and its purpose is to provide a method for manufacturing a micro-injection nozzle that can be manufactured by plating at low cost and that does not require post-processing. .

Hereinafter, the invention will be explained in detail based on the embodiments shown in the drawings.

First, as shown in Fig. 1, two banks 7 (width is, for example, 10 to 15 ms) are formed on the substrate 1 by hardening film by coating with a water-soluble photosensitive liquid.Firstly, the substrate is sandwiched between the banks 7. 1
Primary plating on the surface in a nickel sulfamate bath 2
(The thickness is, for example, 0.015 m+*) and use this as the nozzle base. Note that the thickness of the substrate l is 1.
0-2. A stainless steel plate shall be used.

Next, as shown in FIG. 2, after washing and drying the substrate 1 with water, a stainless steel wire 3 (with a diameter of, for example, φ0.
03mm) and fix both ends with screws 8.

Thereafter, a solvent type photosensitive liquid is applied to the surfaces of the bank 7 and the primary plating layer 2 to a thickness of, for example, o, ooslI to 0°Of+m to form photosensitive resin N4. In this case, the photosensitive resin layer 4
is made to completely cover the stainless steel wire 3 and to be in sufficient contact with the primary plating layer 2 and the bank 7.

Next, after drying the photosensitive resin layer 4, a Bakun film (
The exposed nickel surface corresponding to the opaque part of the primary pattern film is divided into exposed B1!5 and exposed lζ9 as shown in FIG. An oxide film has been formed, and this oxide film part 10 is removed with hydrochloric acid water, and electrodeposited again in a nickel sulfamate plating tank under the same conditions as the primary plating to form a secondary plating layer 6 (w, for example). 0°013R11I) is formed to adhere closely to the primary plating layer 2 and cover the stainless steel wire 3.Finally, the fixation of the stainless steel wire 3 is released as shown in FIG. 4, and the plated eyebrow 2. 3 from the substrate 1 and the stainless steel wire 3 is pulled out to complete the nozzle A.

Incidentally, reference numeral 11 in FIG. 4 can be used as an ink reservoir, and its shape can be changed arbitrarily by changing the shape of the covering portion 9. Furthermore, since the tip of the nozzle A is formed in a loose shape that is blocked by the hardened film part of the water-soluble photosensitive liquid constituting the bank 7 and the photosensitive resin W14, the shape is uniform, and therefore the direction of the ejected ink is The gender can be the same.

In addition, in order to improve the adhesion of the water-soluble photosensitive liquid to the substrate, a 10% aqueous solution of hydrochloric acid and nitric acid was heated to a temperature of 40°C to 45°C.
After soaking for 5 minutes, washing with water and drying, apply a water-soluble photosensitive liquid. The thicker the photosensitive coating, the better, so 0.0
The original plate was adhered to a thickness of 15 mm, exposed and developed using a high-pressure mercury lamp.
Baking is performed at a temperature of 50° C. for 30 minutes.

The liquid composition of sulfamic acid nickel plating was 450 g/λ of nickel sulfamino acid, 40 g/i of boron M, and 20 cc/u of surfactant, and the plating conditions were as follows: temperature: 48°C to 50°C;
pH 4,0-4. S, the current density is 4 to 6 A/drf.

As mentioned above, after forming the primary plating layer that will become the nozzle base on the substrate, a fine-diameter stainless steel wire is stretched over the primary plating layer, and then the stainless steel wire is covered with the primary plating layer. Apply photosensitive 441 greasy eyebrows to the surface of the plating layer, and then apply photosensitive 4kJIli? on predetermined areas. Expose layer 81
After the first image, it is removed to expose the primary plating layer and the stainless steel wire, and then a secondary plating layer is formed on this exposed area and electrodeposition bonded to the primary plating layer, and the stainless steel wire is covered. Afterwards, the plating layer is peeled off from the substrate and stainless steel is created! Since Izumi Okamoto is drawn from the plating layer, ink reservoirs etc. can be manufactured as one piece, and since the steel wire is drawn, post-corrosion treatment is easier compared to corroding and removing the steel wire. As a result, mass productivity can be improved and costs can be reduced.

[Brief explanation of drawings]

Figures 1, 2, and 3 +a+ (bl is a diagram showing the manufacturing process of the present invention, Figure 4 is a plan view of the same nozzle, Figure 5
The figure is a sectional view taken along the line X-x in FIG. 4. 1. One substrate, 2. -- Primary plating layer, 3. Steel wire, 4.
Photosensitive resin layer, 5-・Exposed part, 6-・Secondary plating layer Figure 1 Procedure correction @ (method) % formula % 2. Name of the invention Method for manufacturing a micro-injection nozzle 3. Person making the correction Relationship Patent applicant address name Taiyo Kogyo Co., Ltd. 4, agent address Hinase Tennoji Building, 8-22 Hidenin-cho, Tennoji-ku, Osaka City (06) 772-6006 Contents of amendment From page 6, line 15 of the specification of the application The sentence ``Figure 4 is a plan view of the above nozzle, and Figure 5 is a sectional view taken along the line Plan view of Figure 4 (bl is Figure 4 + 8) x-
Insert the text "xUr surface drawing".

Claims (1)

[Claims] (1) After forming a primary plating layer to serve as the nozzle base on the substrate, a fine-diameter stainless steel wire is stretched over the primary plating layer, and then the stainless steel wire is covered with the primary plating. A photosensitive resin is applied to the surface of the layer, then the photosensitive resin layer at a predetermined location is exposed and developed, and then removed to expose the primary plating layer and stainless steel wire, and then a secondary plating layer is formed on this exposed location. 1. A method for manufacturing a nozzle for micro-injection, which comprises electrodepositing the primary plating layer and coating the stainless steel wire, and then peeling off the plating layer from the substrate and pulling out the stainless steel wire from the plating layer.