JPS59121046A - Color photosensitive film for overlay - Google Patents

Abstract

PURPOSE:To facilitate lamination of each single color developed film and to make it possible to use it for an overlay which is used for overlaying developed films for inspection, etc., by pasting a strippable transparent film on an adhesive layer formed on the rear side of a transparent film having a photosensitive layer on the front side. CONSTITUTION:The surface of a transparent film 1 is coated with an photosensitive layer 2, and another transparent film 4 is pasted to the rear side with an adhesive layer 3 interposd between them. A 5-25mum thick PET or PE film is used for the film 1, a 50-70mum thick PET or PP film for the film 4, and a hot melt adhesive for the layer 3. The adhesive layer 3 enables stripping of the film 4 from the rear side but not that of the film 1. After a color separated film has been printed and developed, and this laminate is overlaid on other laminates without stripping the film 4 to serve as an overlay usable for a color correction print. As anoter use, each color separated film laminate stripped from the film 4 is overlaid on a sheet of white paste board to obtain a sheet of overlay laminate stuck to each other.

Description

[Detailed Description of the Invention] This invention creates a developed film for each color printing by applying and developing the image of the color separation film obtained by applying a color original and skin to a color separation machine. This invention relates to a color photosensitive film for overlay in place of a color proof, in which a developed film is overlaid on a white mount in registration so that a colored image can be viewed directly.

Conventional color photosensitive film for overlays uses a transparent film with a photosensitive layer formed on the front side. Color separation films are printed and developed for each color, and the developed films for each valley color are directly stacked on a white mount to create an overlay. In the case where the applicant's earlier application was filed in 1982, the
As shown in No. 2, a comparatively thin transparent film is provided with a photosensitive layer 1- on the front side and a backing paper with peelable rq function on the back side, and after development, the above-mentioned sheet paper is peeled off and each color developed film is placed on a white mount. In some cases, the sheets are laminated and bonded together to form a single overlay sheet.

In the latter case, the developed film from which the backing paper is peeled off after development is thin, so while registering on one piece of mounting paper,
The lamination work of stacking them on top of each other without shifting their positions requires a lot of effort, resulting in poor workability.

Therefore, the present invention overcomes the drawbacks of the earlier application by laminating another transparent film on the back side of the transparent film that holds the photosensitive layer on the front surface 11111 in a removable manner via an adhesive layer. The overlay has been improved so that developed films of different colors can be easily laminated without shifting the registration position, and can also be used as an overlay for layering developed films without pasting them together. The present invention provides a color sensitive film for printing.

The present invention will be described below with reference to embodiments shown in the drawings.

In FIG. 1, (g) is a transparent film + Il, a photosensitive layer (21) coated and held on the surface of t, and a film (
Adhesive layer (3) formed on the g side of 1), this adhesive layer (3)
This is a color photosensitive film for overlay, consisting of another transparent film (4) which is releasably bonded to the back surface of the film (1) through a film.

In this example, the film f11 has a thickness of 5 to 25 mm.
PET or polyethylene with a thickness of 50 to 70 μ is used for the back film (4). iT or P-P
A film was used. Further, the adhesive forming the adhesive layer (3) is a so-called hot-melt adhesive that does not have adhesive properties at room temperature but can be bonded by heating.

Color photosensitive film for overlay constructed as above (
g) After printing and developing the color separation film,
Without peeling off the back film (4), each single-color film for overlay can be stacked on top of the other as it is, and can be used as an overlay instead of color proof printing. Alternatively, as shown in Fig. 2, color separation films for each color +71 (77, 7m, 70, 7b) obtained by subjecting a color original (5) to a color separation machine (6) and photosensitive films for each color (3 ), the positioning hole (8
1a (81b) is perforated, a color separation film (7) is printed on each, and a developing film (7) for each valley color is formed.
) / (F'b1F/Q, F'm, F'y)
A developed film (a transparent cover film having a common positioning hole (8) C and an adhesive layer (9) on one side) which will become the overlay color J- is prepared. Adhesive layer (9), developed photosensitive layer (2)
The surfaces of the developed film cape are pasted together, and then the back film (4) is peeled off from the bottom side of the developed film cape. The front side of the elephant film (F)'Q, that is, the surface of the photosensitive layer (2) of the film (G)'C, are laminated together, and the back film (4) is peeled off from the back side of the same film (No'C). The above method was repeated for each No. present film (Fy), and the cover film 0
By laminating and adhering four developing films (G)' on the back side of 1, and pasting the adhesive layer (3) that appears on the back side of the bottom developing film (Takuda) on the surface of the white mount Ti1l. , the developing film (g)' for each color is placed on a white mount f
One sheet of overlay (H) is obtained which is integrally layered on top of 111. In addition, the product number of the above-mentioned current II film ΔP)' is determined by using the positioning pin holes +811) (810) commonly drilled in the film III and the color-sensitive film (g) for each color. As shown in Fig. 3, by aligning the cover film flIK with the pin 031' of the sub-edge ruler opening J, registration can be easily made and lamination can be performed while preventing positional deviation. The bonding adhesive between the product l and the surface is also the third
As shown in the figure, attach a pair of templates I that match the respective surface shapes from both sides of the ruler α3 with the pin α These steps are repeated for each layer to securely adhere the layers without shifting the registration position.

As described above, according to the color photosensitive film of the present invention, in which another transparent film is removably bonded to the back side of a film holding a photosensitive layer on the front side through adhesive, the developed film can be used as it is for each color. A thin laminated and fixed overlay sheet is created by layering the color development film in a separable manner on the trough and 111 for overlay, and peeling off the back film after development and laminating it on a white mount. It can be used in two ways, especially the latter, which has the advantage of facilitating registration during product I- and being able to accurately maintain and fix the alignment position.

In addition, since the thickness of the color-sensitive film is increased, it is easier to drill the positioning holes and the registration can be maintained accurately, especially when using a thin film for the overlay film used in the lamination adhesive. It has the effect of providing clear images.

[Brief explanation of the drawing]

FIG. 1 is an enlarged sectional view schematically showing the configuration of an embodiment of the present invention, and FIG. 2 is an explanatory diagram schematically illustrating a method for manufacturing an overlay sheet in which a film is laminated and bonded on a mount using the embodiment.
FIG. 3 is a partially cutaway elevational view schematically illustrating the lamination bonding method same as above. F...color photosensitive film, l...film, 2° photosensitive layer, 3...adhesive layer, 4...another film, F' (*, F
%, F10%F'b)...Development film for each color, 5.
・Color manuscript, 6... Color separation machine, 7 (7y, 7m. 7c, 7b)... Color separation film for each color, 8a1
8b, 8C... Positioning holes, 9... Adhesion 4.10
...Cover film, 11..White mount, 12..Overlay sheet, 13..Ruler, 13'..Bin, 14
... template, 15... hot roller. Applicant: Ueno Chemical Industry Co., Ltd. 32

Claims (1)

[Claims] Color photosensitive film for overlay 0, characterized in that another transparent film is removably bonded to the back side of a transparent film holding a front side pressure sensitive layer via an adhesive layer.