JPS62232834A - Automatic optical exposing equipment - Google Patents

Abstract

PURPOSE:To enhance the efficiency of production, by combining three exposure units together as a single module, and using a single turntable fo enable such fully-automatic transfer in threecolor light exposure that facepanels are automatically transferred at the same time by a single time of simple operation. CONSTITUTION:There is provided a turntable 5 on which three light exposure units 1-3 and a single transfer rest 4 disposed at equal intervals on a circumference with a prescribed radius, and alignment blocks 6 making turning movement on respective light exposure units 1-3 and the transfer rest 4 are installed. Facepanels are intermittently transferred by the rotation at movement of the turntable 5 so that the transferred facepanels are sequentially and automatically exposed fo light by means of the three light exposure units 1-3. The three light exposure units 1-3 are combined Together as a single module, and the single turntable 5 is used to transfer the facepanels, so that the transfer of the facepanels between the light exposure units is automated, the area occupied by the light exposure units is reduced, and the accuracy of positioning of the facepanels to be exposed to light is heightened. The facepnaels can thus be automatically transferred at the same time by a single time of simple operation to enhance the efficiency of production.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an exposure apparatus for a color picture tube used to form a black matrix film of a color picture tube.

[Conventional technology]

Generally, the phosphor screen of a color picture tube is formed by coating the inner surface of the face panel with phosphors of three colors, green, blue, and red, in dots or drives. In order to increase the heat resistance, a method has been adopted in which graphite is applied around it. This graphite is usually applied by the following method before applying the three color phosphors. First, a photosensitive agent is applied to the inner surface of the face panel, exposed to light through a perforated mask such as a shadow mask, and developed to leave the photosensitive agent as a driver-like or stripe-like element. , -), a coating process is used in which graphite is applied, the photosensitive element is swollen, and this is peeled off to form matrix holes. In this step, because it is necessary to form matrix holes in three colors, the exposure is usually carried out in three parts. That is, sequentially,
The face panels are manually transferred to the green, blue, and red exposure devices.

[Problem that the invention seeks to solve]

In the conventional exposure equipment mentioned above, in order to perform three-color exposure in this way, the face panel is manually transferred and exposed in the exposure equipment for each color, which significantly reduces production efficiency. There were drawbacks. Also, because the face panel separates from the exposure device each time it is transferred, when the face panel is transferred to the exposure device again (i. ~Causes the live performance to go awry.

[Means for solving problems]

The exposure apparatus of the present invention combines three exposure apparatuses, treats them as one unit, and uses one rotary table to handle the transfer, thereby automating the transfer of face panels between each exposure apparatus. It has the function of reducing the area occupied by the exposure device and further improving the position accuracy of the face panel during exposure.

[Example〕 Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a view of the exposure apparatus of the present invention viewed from directly above, and FIG. 2 is A-AI! of FIG. 1! ! ? It is a front view. The green, blue, and red exposure devices 1.2.3 and the transfer table 4 are placed at 90° positions with a constant radius when viewed from the rotation center axis 7. The rotary table 5 also has a rectangular opening 9.
and the block 6 to the alignment 1 installed around it.
is Oo, 90°, 180°, 2 around the rotation center axis 7.
Four sets are arranged at the positions when rotated 70'. These are mounted on each exposure device so as to overlap. Note that the rotation table 5 is moved by controlling the drive motor 8 so that it rotates every 90 degrees.

The operation of the above configuration will be described below. First, while the apparatus is in a stopped state, an unexposed face panel coated with a photosensitive agent is placed on the opening 9 provided in the rotary table 5 on the transfer table 4, and the alignment block 6 is used to align the face panel. Perform positioning. Next, the rotary table 5 is rotated through 90 degrees around the central axis of rotation 7 by the operation of the drive motor, either manually or by one-way movement of an automatic detection switch such as a photoelectric element. By this rotational movement, the face panel on the transfer table 4 is moved to the green exposure position. Then, after exposure is automatically started and exposure has been performed for a certain period of time, when a new unexposed face panel is placed on the transfer table 4, it is rotated by 90° in the same operation as the first time. Thereby, the face panel that has completed the green exposure is transferred to the blue exposure position, and the face panel on the transfer table is transferred to the green exposure position, and each color is exposed. If this operation is repeated and delayed, the face panel placed first will complete the three-color exposure and return to the transfer table 4 again.

Subsequently, when each exposure device 1, 2.3 completes exposure and the exposed products and unexposed products on the transfer table 4 are exchanged,
By moving the rotary table 5, the face panel is moved to the next exposure position or onto the transfer table. By repeating the same operation, the face panel coated with the photosensitive agent is sequentially moved from the transfer table 4 to the green exposure device 1, the blue exposure device 2, and the red exposure device 3, and is exposed to each color. , it returns to the transfer table 4 again and is taken out to the outside.

Note that the rotation direction of the rotary table 5 is not limited, and the transfer may be performed by rotation in either a clockwise direction or a counterclockwise direction.

〔Effect of the invention〕

As explained above, when the automatic exposure device according to the present invention is used, it is possible to perform fully automatic transfer during three-color exposure, reduce the installation area, and furthermore, simultaneously transfer the face panel in one simple operation. Automatic transfer improves production efficiency. Also, since the face panel does not separate from the alignment block during transfer, positioning accuracy is improved.
It has two effects.

[Brief explanation of drawings]

FIG. 1 is a view of an embodiment of the present invention viewed from directly above, and FIG. 2 is a sectional view taken along the line A--A in FIG. 1... Green exposure device, 2... Blue exposure device. 3.--Red exposure device, 4.-Transfer table. 5... Rotating table, 6... Alignment block. 7...Rotation center axis, 8...Drive motor. 9...Opening.

Claims (1)

[Claims] Three exposure devices installed at equal intervals on a fixed radius and one
A rotary table is provided with a transfer table and an alignment block that performs rotational movement on each of the exposure devices and the transfer table, and the face panel is intermittently transferred by the rotational movement of the rotary table. An automatic exposure device characterized by automatically sequentially exposing face panels placed thereon using a stand-based exposure device.