JPS60102616A - Contact printing device - Google Patents

Abstract

PURPOSE:To use not only a negative film of any length but also a negative film having no perforation and a photosensitive material by shifting the negative film by utilizing a frictional force to the photosensitive material. CONSTITUTION:A titled device is provided with a supply magazine 1 of a printing roll-shaped photosensitive material, a winding magazine 2, an exposing and driving part 3, an inserting port 4 of a negative film, a discharge port 5, and a start switch 6 of a printing work. When the tip part of a negative film 20 is pushed into the device from the inserting port 4 with its film surface up, its tip is guided by a guide material 16, and placed between a photosensitive material 7 and a guide means 9. In this state, when the start switch 6 is turned on, a light source 15 is lighted, also a driving roller 11 rotates and the photosensitive material 7 is shifted, and the negative film 20 also contacts tightly to the photosensitive material 7 and advances by a frictional force of its film surface and an emulsion surface of the photosensitive material 7, and is discharged from the discharge port 5. When the photosensitive material 7 and the negative film 20 contact tightly and advance along a curved guide part 9a, a picture of the negative film 20 is made to contact tightly to the photosensitive material 7 and exposed by a light of the light source 15 irradiated from an exposing opening 9b.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention provides a pudding l-V Vfi for producing a close-contact pudding 1 which has been developed after photographing.
Regarding I +: in particular, it is possible to make a dense print on the film without cutting or splicing the temporary film. It is related to the device.

(Prior art) Small roll-shaped original film (for example, 35IllIll
Noilm, Brownie Film, etc. The irregular type of flint produced from I'1 (hereinafter referred to as "mem film") is usually an enlarged print of each frame, or a close-contact print of each frame in the same size as the original film (I'1). There is also a considerable demand for the so-called heta-baked pudding (1) (sometimes made from Neto Noilum and others from Liparil Film).

This contact print is generally made by cutting the film surface of the Iji4 temporary film and photosensitive material for printing, and exposing the entire surface of fl; from the plate fill side, but usually the original film is in the form of a long roll. They are overwhelmingly made of film, and large and complicated equipment is required to make contact prints that span the entire length of the film. Conventionally, the original film was cut to an appropriate length, placed on a transparent glass plate, secured with adhesive tape, etc., and brought into close contact with the photosensitive material for printing, and the entire surface was exposed. However, with this method, it is not possible to make contact prints from the original film, which must not be cut, and the printing process requires skilled back-and-forth work, and requires a great deal of effort before and after the printing process. In addition, in some cases, contact printing was carried out on a roll of photosensitive material using a long roll of 35111m film, but in conventional equipment, the films were spliced together to feed the film. The film was made into a long film, and it was necessary to perform the troublesome work of separating the film after printing was completed.

(Purpose of the Invention) The present invention has been made in view of the above-mentioned circumstances, and it is possible to create animal shield prints of any length without cutting or twisting the original film. However, it is intended to provide a contact printing device that requires blood work and is easy to operate. 1 (Structure of the Invention) Contact pudding of the present invention 1 - Apparatus (for L1 printing [a supply section that supplies a call-like photosensitive material, a winding section that winds up this photosensitive material, and a pack tension that is a significant load on the winding force on the photosensitive roller 31). A loading means is provided between the loading means and the winding section, and the surface of the material is exposed to light (4).
A curved guide section is provided which is in contact with the emulsion surface (emulsion surface) and is curved so that the surface fills the photosensitive material. I
lj+gap for temporary film insertion is set, and To! I
A gap for publishing li films;! an exposure phase 1 provided on the curved guide portion of this guide means.
, J3, and this exposure phase, the exposure light is directed onto the photosensitive material.

(Example) Hereinafter, the present invention will be described in detail based on an example shown in the drawings.

1 and 2 show a contact printing apparatus according to an embodiment of the present invention. As shown in FIG. Winding magazine 2, exposure/drive unit 3, original film insertion port 4, discharge port b, print work start switch 6
It is equipped with

FIG. 2 shows the exposure/drive section 3 in detail.
As shown in the figure, a roll of photosensitive material for printing (hereinafter simply referred to as photosensitive material) 7 supplied from the supply magazine 1 includes a free roller 8, a guide means 9, a free roller 10, and a start switch 6 that is pressed. The winding is carried out on the winding shaft 2a of the winding magazine 2 through the drive roller 11, which rotates at a constant speed in the direction of the arrow, and the press roller 12, 12 only when the winding is carried out. Loading means 11), which is made of an elastic body that presses against the i! I've been beaten by 1. Said guide means 9
has an arc-shaped curved guide portion 9a inserted between the free rollers 8 and 10, and both ends are connected to the free roller 8.
．． 10 apart from the photosensitive U rice 7, the gap between 13.111
It is now possible to set the

An exposure opening 9b is provided in a part of the curved guide portion 9a (
The light-sensitive material 7 is
At the position facing the
is installed. , Guide members 16 and 17 extending in the direction of the gaps 13 and 14 are provided inside the film 1 center portion 4 provided in the small dee 18 and 19 on the surface layer, and the film discharge port 5, respectively. .

Next is the device with the above configuration! (The action of the moving bed will be explained. The photosensitive material 7 is set so that its emulsion side faces the guide means 9 side.Then, the driving loaf 11 is driven to transfer this photosensitive material u'P47. When the photosensitive material 7 is moved to the winding machine 2 side, pack tension is applied to the photosensitive material 7 by the action of the loading means 1F), so the photosensitive material 7 between the free rollers 8 and 10 is pressed against the curved guide portion 9a. The object moves while moving, and continues to be in contact even after it stops moving.

When the leading end of the original film 20 is pushed into the apparatus through the insertion port 4 with the film surface facing up, the leading end is guided by the guide 4A16 and is placed between the photosensitive material 7 and the guiding means 9 as shown in FIG. Sandwiched. When the start switch 6 is turned on in this state, the light source 15 lights up and the drive roller 11 rotates to transport the photosensitive material 7. However, the original film 2o also experiences friction between its film surface and the emulsion surface of the photosensitive material 7. Due to the force, it advances in close contact with the photosensitive material 7 and is discharged from the discharge port 5. When the photosensitive material 7 and the original film 2o are in close contact with each other and move along the curved guide portion 9a, the image on the original film 20 is projected onto the photosensitive material 7 by the light from the light source 15 emitted from the exposure opening 9b.
is closely exposed to light.

The light source 15 may be turned on and off in synchronization with the transfer and stop of the photosensitive material 7, or it may be turned on all the time and a shutter that opens and closes in synchronization with the transfer and stop of the photosensitive material 7 is provided, and the shutter is opened. Even if you try to expose it to light, it is difficult to do so. Adjustment of the light weight of the light source 15 and adjustment of light quality in the case of color photography may be performed by any known method.

When the original film comes out from the discharge port 5, the drive roller 11 is stopped by turning the start switch 6 to 01-1-. The starting switch 6 operated in this manner is preferably of a type that remains ON while being pressed. A self-holding type start switch 6 is used as the starting switch 6, and the fact that the rear end of the original film 20 has completely passed through the curved guide portion 9a is detected by mechanical, electrical, or optical methods. It is also possible to cancel the ON state of the start switch 6 by using No. It is also possible to use a brake 4 for pressing the photosensitive material 7 between the feed shaft 1a or the free roller 8 such as the supply shaft 1a.

FIG. 3 shows another embodiment of the invention.

In this FIG. 3, the same elements as the key 711 of the above embodiment are given the same numbers as those in FIGS. 1 and 2,
I will not explain them repeatedly. In the apparatus of FIG. 3, the guiding means is comprised of a number of guiding rollers 30. These guide rollers 30 are arranged in an arc shape between free rollers 8.10 and have a curved guide portion 30a.
and guides the photosensitive material 7 in a curved manner. The gap between the two guide rollers 30 at the center of the curved guide portion 30a is an exposure opening 30'b. The light source 15 is disposed in a light shielding member 32 having an opening 31 facing the exposure opening 30b.
Exposure light is irradiated onto the photosensitive material 7 side through 0b. In this embodiment, a pair of free rollers 33a, 33bJ5 and 34a are wound with black terremp on the inside of the film insertion port 4 and the film discharge port 5, respectively.
, 34b are provided to shield the inside of the apparatus from light, allowing operation in a bright room.

(Effects of the Invention) As explained in detail above, the contact printing device of the present invention has the following features:
Since the original film is transferred using the frictional force between the photosensitive material and the photosensitive material, it is possible to use any length of the original film B1, as well as original films and photosensitive materials without perforation. And the structure is also 44! Easy t1! It is. However, by simply inserting the original film into the device while transporting the original film as described above, the IJI! The plate film and the photosensitive material are automatically brought into close contact with each other during transport, making the printing process very simple.

J5, if a light shielding means 91 is used as in the example in Fig. 3,
It is extremely simple to print in a bright room.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing a first embodiment of the present invention, Fig. 2 is a partial 1θi 1ili view showing the main parts of the device of the above embodiment, and Fig. 3 is a main part of the second embodiment of the invention. FIG. 1... Supply magazine 1b... Loading means 2... Winding magazine 4... Film middle entrance 5... Film discharge port 7... Photosensitive material 9... Guide means 9a, 3
0a...Curved guide portion 9b, 30b...Exposure opening
13.14...Gap 15...Light source 20...Original film Figure 1 Figure 2 Figure 3 20°

Claims (1)

[Claims] A supply unit that supplies a roll of photosensitive material for printing, a winding unit that winds up this photosensitive material, a loading unit that applies back tension to the photosensitive material as a load against the winding force, and this loading unit and the winding unit. A curving guide part that contacts the surface of the photosensitive material and curves the photosensitive material so that the surface side becomes concave is provided between the curving guide part and the photosensitive material on the supplying part side of the curving guide part. A gap for insertion is set, and a gap of 43 mm is set on the winding section side from the curved guide section.
a guide means for setting a gap for ejecting the original film between the guide means and the photosensitive material; an exposure aperture provided in the curved guide portion of the guide means; and an exposure light irradiated onto the photosensitive material through the exposure aperture. A contact printing device consisting of a light source.