JPH0357467B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a negative mask mounting device for a printer.

Conventionally, the negative mask was removed from the negative mask mounting device, the negative presser was raised, and the negative film was inserted.
The movement was used for extracting and trimming, but the operation was complicated.

The present invention is capable of moving a negative mask by pressing down the negative stand with the negative mask mounting device attached to form a gap between the negative presser foot and the negative stand, which is used for inserting, extracting, and trimming the negative film. The purpose of this device is to provide a negative mask mounting device, in which an upper negative mask holding stand equipped with a magnet on the underside is attached to the lower end of the mirror tunnel, and a negative mask holding lower stand is slidably fitted into the opening of the dark box. At the same time, the lower stand is pressed against the upper stand by a biasing spring so as to protrude through the exposure opening of the dark box, and a negative mask consisting of a negative presser made of magnetic material is pivotally attached to the negative stand is placed between the upper stand and the lower stand. The device is characterized in that it can be attached to the device.

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

In the figure, reference numeral 1 denotes a printer, which includes a first dark box 2, a second dark box 3, and a third dark box 4. A mirror tunnel 6 is provided above the exposure opening 5 of the first dark box 2, and light from a light source 7 enters the mirror tunnel 6 through a dimming filter 8 and a cut filter 9. An upper stand 10 for holding a negative mask is attached to the lower end of the mirror tunnel 6, and a magnet 11 is attached to the lower surface of the upper stand 10. A lower stand 12 for holding a negative mask is provided in the opening 5.
are slidably fitted together, and the lower stand 12 is pressed into contact with the upper stand 10 by a pair of left and right biasing springs 13. When the lower stand 12 is pressed against the upper stand 10, as shown in FIG. 1, the lower stand 12 protrudes through the exposure opening 5 of the first dark box 2 to prevent outside light from entering the first dark box 2. It's getting old.
Reference numeral 14 denotes a negative mask that is mounted between the upper table 10 and the lower table 12 against the biasing spring 13, and the negative mask 14 is assembled by stacking a negative presser 15 made of a magnetic material on the negative table 16. Rising pieces 18, 18 and 17 formed on both sides of the rear end of the negative presser foot 15,
17 are pivotally connected by pivot pins 19, 19. Reference numeral 20 denotes a finger hook piece formed by bending the front end of the negative table 16 into a Z-shape.

In FIG. 1 showing the state of use of the negative mask mounting device of the present invention, 21 is a lens, and 22 is a screen. 23 is a negative judgment window; 24
is a light guiding oblique cylinder communicating with the window 23. A mirror 25 opens and closes the end of the oblique tube 24, and is opened and closed by a rotating solenoid 26.
27 is a trimming window, and 28 is a shutter for opening and closing the trimming window 27, which is opened and closed by a motor (not shown). Reference numeral 29 is a reflecting mirror that opens and closes the exposure center 30 through which the first dark box 2 and the third dark box 4 communicate, and is opened and closed by a motor (not shown). Reference numeral 31 denotes printing paper, which is fed out from the second dark box 3, printed on an exposure table (not shown) in the third dark box 4, and conveyed to the processor.

Therefore, the negative stand 16 that constitutes the negative mask 14
and a negative presser 15, and as shown in FIG. Then, when the light source 7 is turned on, the light passes through the negative and the lens 21 to the screen 22.
A statue is placed above it. The image on the screen 22 can be confirmed by opening the shutter 28 of the trimming window 27. Next, as shown in FIG. 1, when the finger hook 20 of the negative stand 16 is pushed downward while the negative mask 14 is attached between the upper stand 10 and the lower stand 12, the negative presser foot 15 is moved by the magnet 11. Since it is attracted to the lower surface of the upper stand 10, a gap is created between the negative presser foot 15 and the negative stand 16, as shown in FIG. At the same time, the lower stand 12 is pushed down into the opening 5 by the negative stand 16. A negative film can be inserted into the gap formed as described above, the inserted negative film can be moved and used for trimming, or the negative film can be removed after printing without damaging it through this gap. be able to. In addition, compared to the conventional operation of raising the negative presser foot, the operation of lowering the negative plate is extremely simple and does not damage the negative film. When the mirror 25 is opened as shown in FIG. 1 by the rotating solenoid 26, the image seen on the mirror 25 through the negative judgment window 23 and the oblique tube 24 allows judgment and frame alignment of the negative film.

Furthermore, since photometry is performed without being affected by external light, negative judgment and frame alignment can be conveniently performed in a bright room.

As is clear from the above description, according to the present invention, when a negative mask made of a negative presser made of magnetic material is pivotally attached to a negative stand is attached between the upper stand and the lower stand,
By fixing the negative presser with a magnet attached to the bottom of the upper stand, you can easily connect the negative presser and negative stand by pushing down the negative stand with the negative mask attached between the upper and lower stands. A gap can be formed between the two, and the negative film can be inserted into this gap, the inserted negative film can be moved and used for trimming, or the negative film can be damaged after printing due to this gap. It has an excellent effect of being able to be removed without any problems.

[Brief explanation of drawings]

The drawings show embodiments of the present invention, in which Figure 1 is a vertical cross-sectional side view of a printer incorporating the negative mask mounting device of the present invention, Figure 2 is a vertical side view, and Figure 3 is a perspective view of a negative mask. be. 1: Printer, 5: Exposure opening of dark box,
6: Mirror tunnel, 10: Upper stand for holding negative mask, 11: Magnet, 12: Lower stand for holding negative mask,
13: Biasing spring, 14: Negative mask, 15: Negative presser, 16: Negative table.

Claims (1)

[Claims] 1 At the lower end of the mirror tunnel, an upper stand for holding a negative mask with a magnet on the lower surface is attached, and a lower stand for holding a negative mask is slidably fitted into the exposure opening of the dark box, and the lower stand is held in place by a biasing spring. A negative mask is mounted between the upper stand and the lower stand, the negative mask being made to protrude through the exposure opening of the dark box so as to be in pressure contact with the upper stand, and having a negative presser made of a magnetic material pivotally attached to the negative stand. Negative mask mounting device for printers.