JPS584150A - Exposure device - Google Patents

Abstract

PURPOSE:To facilitate setting of a film to a correct position in the dark, by providing positioning members to be brought into contact with the 2 adjacent sides of the film, and means for detecting contacts of said members with said sides. CONSTITUTION:Standard pins 20, 21 are fixed to a film-placing plate 4 so as to bring them into contact with one of the 2 adjacent sides of a rectangular film 10, and one standard pin 22 is fixed to bring it into contact with the other side. The 2 sides of the film 10 are brought into contact with all these pins 20, 21, 22. The pins are insulated from the plate 4 with electrically insulating bushes 24, and each of them is used as an independent electrode. The lead wires of the pins 20, 21, 22 are connected to an AND circuit 30 through an electrostatic detectors 31, and indicating lamps are turned on by signals fed to their output terminals. A red lamp 40 is lighted when each pin comes into contact with the side.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the positioning of a film placed on an exposure apparatus. Printed circuit boards used in various communications and electronic devices are formed through various processes. In particular, in the process of forming a circuit pattern, pattern exposure is performed on the film that is to be the original image using a self-fthl II optical device equipped with an exposure head that performs a predetermined movement with #i number set, and thereby a desired circuit pattern or Obtain a film showing component mounting.

The procedure for placing film on a conventional exposure device is as follows:
As shown in FIG. 1, holes 2 are accurately punched near the edges of two adjacent sides of a rectangular film 1 using a dedicated punching device (not shown). Since the film is to be placed on the film mounting table 4, the hole 2 is fitted into the reference bin 5 fixed on the table 4 to determine the position ν of the film 1. Of course, the relationship between hole 2 and bottle 5 is the same, and they fit together! The number of holes provided on the four sides of the o6Fi film mounting table are determined to be extremely accurate, and the internal suction pump is used to create a negative pressure, and the #ttIL film l is transferred to the table 11.
It is a rounded one with iK fixed. After this, the exposure head 7
moves in a predetermined X@Y direction on the five sides of the film to form a desired pattern on the film 10, then removes the film and moves to the developing process. Since the film was not exposed and had not been exposed to 3J1m, the film was carried out in a dark place in a dark room using a stone grope. The film is pressed against the surface and the hole is punched all at once by pressing down on the lever of the punching device, so there is no way to check whether the film has touched the reference surface or not, so there is no way to make a mistake. Because of this, holes could be made and expensive film was wasted.
There is also a risk that the film may be soiled due to adhesion of fingerprints, etc. Furthermore, there is the inconvenience of having to constantly maintain and maintain the punching device so that it can punch holes accurately.

The present invention solves the above-mentioned conventional problems, and provides an exposure apparatus using a new means for positioning the film on the iI contact exposure apparatus without the need for the step of opening a reference hole.

The present invention will be described based on embodiments and with reference to the drawings.

FIG. 3 is a basic plan view of the present invention, in which a rectangular film 1
Instead of the reference pin 5, two reference bins 20 and 21 are installed on the film mounting table 4 of the exposure device similar to that shown in FIG. A reference pin 22 is provided with an edge w and -'F of the other side, and each side of the film 10 is brought into contact with all of the bins 20 to 22. In other words, Bin 20.2
With side A of the film in contact with 1 being the Y-axis, the film end line is in contact with the axial direction of .The other side B is moved closer to the bin 22 by moving the source, and the bin 22 and the side are in contact with each other. If it is a shape, this side B is the Y-axis perpendicular to the Y-axis, and film 1 is
It will be readily understood that the position of 0 is defined. At this time, it is not necessarily necessary to slide the film lO on the X axis, but it is sufficient to place it so that it contacts all the bottles.

However, since the above operations are performed in the dark,
In the present invention, the following points are important in terms of construction. That is, as shown in FIG. A stone in which the conductors 20 to 22 constitute independent electrodes. Three bottles 20 as shown in FIG.
22 is connected to an AND circuit 30 via a static electricity detection terminal 31, and a signal appearing at its output terminal 32 lights up an indicator light 40 provided in a main part of the exposure apparatus. do. As shown in FIG. 2, this indicator light 40 is provided at the main part 8 or 6 of the exposure head 7 or at any other suitable position.

The film 10 is then placed on the mounting table 4 in the manner described above, and the two contacting sides are brought into contact with the three bins 20 to 22.
During the course of other operations, a considerable amount or a small amount of stillness is accumulated. Therefore, when the edges A and B of the film all come into contact with the bins 20 to 22 on their respective axes, the static electricity on the film 10 is converted into a current Ig by the electrostatic detection element 31, and three currents are generated by the AND circuit 30. bottle 20
~ 22 is obtained, and an output signal appears at the output end 32, which causes the film 10 to be insensitive to the red light lamp 40, which emits visible light; You will know when the film is set in the position. As a result, the suction pump is activated, the film 10 is placed flat on the mounting table 4, and the exposure head 7 is operated to perform a predetermined exposure. If the film 1.0 does not come into contact with any of the bins, the AND circuit 31 obtains i''L.
The indicator lamp 40 does not light up, so move the film 10 appropriately so that the indicator lamp 40 lights up.
In this case, the film 10 would be placed in the regular shape 111. A different embodiment of the present invention is shown in FIG. FIG. 6 shows the edge of the film 10 contacting and pressing the protrusion 26 of the contact leaf spring 25 held inside the columnar positioning bin 20 from the direction of the arrow, and pushing it in as shown by the chain line. The movable contact 27 switches from contact 28 to contact 29 at once due to the rebound (pack ring) action.

In this way, the movable contact 27 is set to change to the contact 28 at the same time as the film 10 comes into contact with the bin 20.
By removing the film 10, the movable contact 27 returns to its original state.A still further embodiment of the present invention is shown in FIG.

A part of the plate spring 50, which has one end fixedly installed inside the columnar positioning pin 20 and a permanent magnet 51 attached to the other free end, is cut and bent and protrudes as an actuating piece 52.L6 permanent magnet 51 A $m type electric cost converting element, for example, a reed switch 53 is provided at a position facing the .

When the edge of the film 10 contacts and presses the actuating piece 52 from the direction of the arrow, pushing the film 10 into contact with the bottle 20, the leaf spring 50 has an elastic shape as shown by the chain line.
Then, the permanent magnet 51 at the tip approaches the reed switch 53 and closes the contact of the reed switch. Since the actuating piece 52 is close to the fixation @ of the rice spring 50, the distance of movement of this suppressing operation moves the permanent magnet 51 greatly, so the switch 5
The change in number 3 is clear. By removing the film 10, the leaf spring 5 (l) is removed.The magnetically sensitive element is not limited to a reed switch, but may be any other semiconductor element. The force varies by several gr, and the operating stroke is only 1w8 [or less], so the switch operation is extremely sensitive.

Therefore, those who replace the pins 20 or 20 with the bottles 20 to 22 in FIG.
0 lights up, indicating that the film 10 is set in stereo position. In addition, as shown in Figure Maki 8, each contact point, indicator light 40, and power source 60 are connected in series to a stand that has a direct switch function in this way. If this is followed, it can be realized with an extremely simple circuit configuration.

As described above, the present invention can directly set the film setting position in a dark place, is extremely easy to operate, and has remarkable practical effects such as being able to sense the setting. It also shows excellent effects such as eliminating the conventional punching hole, fitting the punch hole and the reference pin, and eliminating the loss of film due to the punch zXK.

[Brief explanation of the drawing]

The si diagram is a perspective view of a conventional film, and the second diagram is an exposure ist diagram.
+t schematic oblique #i diagram, Figure 3 is an explanatory diagram of the principle of film positioning of the present invention, Figures 4 and 5 are an embodiment of the zero shell, and Figures IIE 6 to 8 are of the present invention. ◎ In the figure, 3 If Jr exposure wi plate, 4 film mounting table, 1
0 digit film, 20 to 22 are bottles, 40 digit display special applicant Fujitsu Ltd. Kaya 17, 2. ~2゜5! Js diagram Figure 7 Figure δ2

Claims (1)

[Scope of Claims] (1) An exposure apparatus comprising a film mounting table on which a film is placed, and an exposure head that moves in a predetermined position on the film mounting table and exposes the film placed above in a pattern. - providing positioning contact members on two adjacent sides of the film to be placed on the film mounting table surface; Exposure characterized by comprising at least one point in contact with the other side and a detection means for detecting that the side of the KM film is in contact with the other side! 2. The exposure apparatus according to claim 1, wherein the detector Hl constitutes an electrostatic detection electrode for detecting static electricity on the film. (3) The detection means is characterized in that it is capable of interlocking an electric circuit switch when the film comes into contact with the first pole.