JPS6188424A - Developing device - Google Patents

Abstract

PURPOSE:To enable a minute phosphor pattern film to be efficiently formed by applying a phosphor powder to the inner surface of the bulb and then supplying moistened air to develop images before removing the excess stable powder adhering to the inner surface. CONSTITUTION:After a minute phosphor-receiving pattern film is formed on the inner panel surface of a closed bulb 2 and then a given phosphor powder is applied to the film, the closed bulb 2 is set in a carrier 3 and then a development nozzle 1 is placed in the bulb 2 by means of a device 8 for vertically driving the nozzle 1. Next, while the closed bulb 2 is rotated by means of a revolving device 4 moistened air 6 is sprayed out through the holes 1a-1c of the end of the development nozzle 1 to remove the excess stable phosphor powder adhering to the inner panel surface of the bulb 2 thereby developing images. By the means mentioned above, it is possible to efficiently form a minute phosphor pattern film.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a developing device, and more particularly to a developing device for phosphor powder suitable for forming a fluorescent surface on the inner surface of a bulb panel by a dry process. .

[Background of the invention]

A method for forming a phosphor surface by forming a fine phosphor pattern film on the inner surface of a panel using a dry process was already disclosed in JP-A-56
Although it is detailed in Publication No. 141143, the technology to apply a dry process to form a fine phosphor pattern film inside a so-called closed bulb that integrates the panel part and funnel part of the bulb has not yet been established. Moreover, the above-mentioned method for forming a fluorescent surface was insufficiently recognized and lacked specificity.

[Purpose of the invention]

Therefore, the present invention has been made in view of the above-mentioned problems, and its purpose is to apply phosphor powder inside a bulb, develop it by supplying humidity-controlled air, and remove the adhering excess. Another object of the present invention is to provide a developing device that can remove unstable powder and efficiently form a fine phosphor pattern film.

[Summary of the invention]

In order to achieve such an object, the present invention provides a carrier that holds a valve, an autorotation device that rotates this valve, a developing nozzle that supplies humidity-controlled air to the inner surface of the panel of this valve, and a valve that connects this developing nozzle to the valve. At least a drive device for inserting and taking out the nozzle is provided, and the nozzle is inserted into and taken out at the tip of the nozzle. A plurality of humidity control air outlets with different humidity are provided, and L'' flowing out from each outlet is provided.
This process is carried out by precisely impinging moist air on the desired position on the inner surface of the panel.

[Embodiments of the invention]

Next, the embodiments of the present invention will be explained in detail using the drawings.

FIG. 1 is a bottom view of one main part showing an example of a developing device according to the present invention. In the figure, 1 is a developing nozzle, 2 is a closed pulp, 3 is a carrier that holds the closed pulp 2 in a predetermined position, and 4 is a carrier 3 that is movable and moves the closed pulp 2 in the direction of arrow A around the tube axis. 5 is a powder collection container that collects and stores surplus and unstable portions of the fluorescent powder applied to the closed pulp 2; 6 is a humidity control chamber that supplies the developing nozzle 1;
7 Exhaust air for exhausting the inside of the powder collection container 5 8 is a vertical drive device that moves the powder collection container 5 in the direction of arrow B-B in order to insert the developing nozzle 1 into the closed valve 1 and take it out. , 9 is a mount.

FIG. 2 is an enlarged sectional view of part 0 shown in FIG. 1.

In the same figure, the visual nozzle 1 has a 97M section 1 that allows the outflowing humidity-controlled air 6 to reliably collide with the central part of the inner surface of the closed pulp 2, the diagonal corner part, and the intermediate part thereof. Different inclination angles θl.

A plurality of holes having θ2 and different hole diameters are provided. FIG. 3 shows a plan view of the four tip parts of the developing nozzle 1, and in the figure, the hole 1a corresponding to the diagonal corner is connected to the hole 1b in the center and the hole 1° in the middle. The hole diameter is larger in comparison, increasing the air volume compared to the central part. The corner hole 1a has an angle θl with respect to the center hole 1b, and the intermediate hole 1c has an inclination angle θ3.
They each have

In such a configuration, first, a silk photoreceptor pattern Fk, 2 is placed on the inner surface of the panel of the closed pulp 2.
After shaping and applying a predetermined amount of phosphor powder, this closed pulp 2 is placed in a carrier 3, and the developing nozzle 1 is inserted by a nozzle upper and lower passage device 8. Rotate the closed pulp 2 and open the developing nozzle 1.
The humidity-adjusted air 6 is completely blown out from the matching holes 1a+1b*1c at the tip of the panel to remove excess and unstable fluorescent powder adhering to the inner surface of the panel of the closed pulp 2, and then development is performed.

Then, the removed pulp flows out of the closed pulp 2, enters the powder collection container 5, and is forcibly discharged to the outside as an exhaust air 7.

According to such a configuration, the diagonal corner portion of the closed pulp 2 is a place where excess and unstable fluorescent powder is difficult to remove.
1. θ2 and holes 'a+'b+1('t) with different hole diameters are provided respectively, and by increasing the flow rate of humidity-controlled air 6 to the diagonal corners, the developing effect is enhanced. Uniform development can be achieved.

〔Effect of the invention〕

As explained above, according to the present invention, after the salmon powder is applied inside the bulb, the adhering residue 11 and unstable powder are accurately removed, and the remaining particles 11 and the unstable powder are accurately removed at each location t'11 on the inner surface of the bulb. Uniform development becomes possible, and a fine phosphor pattern can be formed with less man-hours and energy than before. In addition, there is no need to bend the tip of the current nozzle inside the valve or insert the 14-person development nozzle, and you only need to insert one developing nozzle, making it easy to automate development. Extremely subtle effects can be obtained, such as shortening the work time for the next process.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional configuration diagram of a partial portion showing an example of a developing device according to the present invention, FIG. 2 is an enlarged cross-sectional view of section C in FIG. 1, and FIG. 3 is a plan view of the tip of a developing nozzle. 1...Development nozzle% 1 a+ 1 b r I
C... Hole, 2... Conflict rose valve, 3...
...Carrier, 4... - Rotating device, 5φ... Powder collection container, 6... Humidity control air, 7... Exhaust air, 8...
...1 vomiting device for upper and lower, 9φ, number, mount. 11th 22nd

Claims (1)

[Claims] 1. A carrier that holds a valve, a rotation device that operates the carrier and rotates the valve in the circumferential direction around the tube axis, and a rotation device that rotates the valve in the tube axis direction opposite to the inner surface of the panel of the valve. At least a nozzle having a plurality of openings that is driven and allows humidity-conditioned air to flow out from the tip thereof, means for supplying humidity-conditioned air to the nozzle, and a drive device that drives the nozzle in the tube axis direction. A developing device characterized by: 2. A plurality of apertures having different inclination angles and hole diameters are provided in a central portion of the nozzle tip facing the inner surface of the panel, a diagonal corner portion, and an intermediate portion thereof. Developing device described in Section 1.