JPH0732651U - Tack seal type photographic paper - Google Patents

Abstract

(57) [Abstract] [Purpose] To prevent the adhesive from sticking out during exposure and development in a tack-seal type photographic paper having an adhesive layer and a release sheet on the back surface of the photographic paper. [Structure] Regarding the relationship between the positions of both ears in the width direction of the adhesive layer of the tack seal type photographic paper and the release sheet, both ears of the adhesive layer are placed inside both ears of the release sheet. [Effect] The adhesion of the adhesive to the transport rolls of the printer and the developing machine was completely eliminated.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a tack seal type photographic paper provided with an adhesive layer and a release sheet on the back surface of the photographic paper, and more particularly to a tack seal type photographic paper cut into a roll product.

[0002]

[Prior art]

 Tack seal type photographic paper having an adhesive layer and a release sheet on the back side of the photographic paper is, for example, Japanese Utility Model Publication No. 60-41949, Japanese Utility Model Publication No. 60-41950, Japanese Utility Model Publication No. 60-181747, etc. It is used for sticker prints, stickers, labels, etc. Tack-seal type photographic paper is exposed and developed in the same way as general photographic paper, but at that time, when processing in roll form, the adhesive squeezes out from between the photographic paper and the release sheet. However, there was a problem in that the protruding adhesive adhered to the transfer rolls of the printer or the automatic processor.

[0003]

[Problems to be solved by the device]

 An object of the present invention is to provide a roll-shaped product of tack seal type photographic paper which prevents the adhesive from protruding during exposure and development processing.

[0004]

[Means for Solving the Problems]

 The above object of the present invention is to determine the positional relationship between the adhesive layer of the tack seal type photographic paper cut into a roll shape and the two ears in the width direction of the release sheet. Achieved by being inside. That is, the present invention is directed to the relationship between the positions of both ears in the width direction of the adhesive layer and the release sheet in the roll-shaped product of the tack seal type photographic paper in which the adhesive layer and the release sheet are provided on the back surface of the photographic paper. In the tuck seal type photographic paper, both ears of the adhesive layer are inside the both ears of the release sheet.

The printing paper in the present invention is a silver halide color printing paper, a silver halide black-and-white printing paper or the like, but a silver halide color printing paper is generally used. The release sheet in the present invention is a paper treated with silicon or a fluororesin (for example, Teflon under the trade name), cellophane, synthetic paper, aluminum foil, polyethylene, polypropylene, polyvinyl chloride, polyethylene terephthalate. A synthetic resin film or the like is used. As the adhesive in the present invention, an adhesive generally used in the manufacturing industry of adhesive tape, adhesive sheet, label paper and the like such as solvent type and emulsion type can be used.

[0006]

【Example】

 Hereinafter, the present invention will be described in detail with reference to examples, but the present invention is not limited thereto. FIG. 1 is a perspective view showing the outline of a roll-shaped product of tack seal type photographic paper, and FIGS. 2, 3, and 4 are enlarged sectional views taken along the line AB in FIG. 2 and 3 show an embodiment of the present invention, and FIG. 4 shows a conventional product. In each drawing, 1 is a printing paper, 2 is an adhesive, and 3 is a peeling sheet. In FIG. 2 showing an example of the present invention, the photographic paper 1 and the adhesive layer 2 have both ears shorter than the release sheet 3 by a length a. In FIG. 3 showing another example of the present invention, the adhesive layer 2 has both ears shorter than the photographic paper 1 and the release sheet 3 by a length b. The lengths of a and b are not particularly limited, but are about 0.5 mm to 4 mm, preferably 1 mm to 2 mm. The width of the rolled product is generally 8 to 30 cm. In the present invention, as shown in FIGS. 2 and 3, since both ears of the adhesive are located inside the ears of the peeling sheet, both ears of the adhesive and both ears of the peeling sheet are in the same position. Compared to the conventional product shown in Fig. 4, even if pressure is applied by the roll of the printer or automatic processor during exposure and development processing, the adhesive layer 2 is less likely to protrude to the outside, and the transport roll of the printer or automatic developer, etc. The adhesive does not adhere to the.

Next, a method of manufacturing the tack seal type photographic paper of the present invention having the cross sections shown in FIGS. 2 and 3 will be briefly described. For the laminating process of the photographic paper, the adhesive layer and the release sheet, a method generally used for adhesive tapes, adhesive sheets, label papers, sticker prints and the like can be selected and adopted. In general, the laminating process is performed in a wide and long state, and then slit-cut into a small size to complete a roll-shaped product. When slitting into a small size roll-shaped product, the roll-shaped product of the present invention as shown in FIG. 2 can be prepared by changing the slit width of the printing paper and the release sheet. The roll-shaped product of the present invention in which the adhesive layer as shown in FIG. 3 is shorter than the photographic paper and the release sheet, for example, is provided with the non-coated part of the adhesive layer in advance according to the width of the roll-shaped product during the laminating process. It can be obtained by slitting the non-coated portion during slit cutting. This method will be described with reference to FIG.

Usually, in the laminating process, the release sheet is first coated with the adhesive, dried and then laminated with the photographic paper. When the release sheet is coated with the adhesive, as shown in FIG. An adhesive non-applied portion 5 is provided in the traveling direction of the cloth. 6 is an adhesive application part. The width of the non-coated portion 5 is about 2 mm to 5 mm, and the interval is adjusted to the width of the roll-shaped product. The width of the rolled product is usually about 8 cm to 30 cm. After laminating with photographic paper, slits are cut in the non-adhesive portion 5 to obtain a roll-shaped product having a cross section as shown in FIG.

Next, the test results of the adhesive squeeze out in the printer of the roll-shaped product having the cross sections of FIGS. The photographic printing paper is a silver halide color photographic printing paper, the adhesive layer is a solvent type adhesive coated in a dry state at 25 g per m ² , and the release sheet is a tack seal photographic printing paper using a 50 micron thick polyester film. A roll-shaped product having a cross section of 3, 4 was finished. The size of the roll-shaped product was 8.9 cm in width and 300 m in length. Each of these three types of roll-shaped products was exposed continuously with a printer, three rolls each, and then the state of adhesion of the adhesive to the transport rolls in the printer was examined. As a result, the roll-shaped product having the cross section shown in FIGS. 2 and 3 of the present invention had no adhesive adhered at all, and the conventional roll-shaped product shown in FIG. 4 had the adhesive adhered to a thickness of 1 mm. The roll-shaped product of the present invention having the cross-sections shown in FIGS. 2 and 3 has significantly improved the protrusion of the adhesive, but FIG. 3 is more preferable.

[0010]

EFFECTS OF THE INVENTION In the present invention, for a roll product of tack seal type photographic paper having an adhesive layer and a release sheet on the back side of the photographic paper, both ears of the adhesive are placed inside both ears of the release sheet. Therefore, compared to the conventional product in which both ears of the adhesive and both ears of the release sheet are in the same position, the adhesive layer is exposed even when pressure is applied by the transfer roll of the printer or the automatic developing machine during exposure and development processing. Therefore, it is possible to prevent the adhesive from being hindered from adhering to the transport roll of the printer or the automatic developing machine.

[Brief description of drawings]

FIG. 1 is a perspective view of a tuck seal type photographic printing paper roll product according to the present invention.

FIG. 2 is a sectional view taken along the line AB of FIG.

FIG. 3 is a cross-sectional view taken along the line AB of FIG. 1 according to another embodiment of the present invention.

FIG. 4 is a cross-sectional view taken along the line AB of FIG. 1 of the conventional product.

5 is a front view showing a state in which an adhesive layer is applied to a release sheet in the process of manufacturing a roll-shaped product having the cross section of FIG.

[Explanation of symbols]

 1 photographic paper 2 adhesive layer 3 release sheet 4 core 5 adhesive non-application part 6 adhesive application part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Atsushi Yamazaki Atsushi Yamazaki, 33-3 Hirano Baba, Hirano-ku, Osaka-shi, Osaka (72) Inventor, Masanori Hyakudome 3-4-2 Marunouchi, Chiyoda-ku, Tokyo Sanryo Paper Co., Ltd. (72) Inventor Shigeru Toi 3-4-2, Marunouchi 3-4-2, Marunouchi, Chiyoda-ku, Tokyo (72) Inventor Kato Sea of Hiji, 3-4-2 Marunouchi, Chiyoda-ku, Tokyo Sanryo Paper Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. The relationship between the position of the adhesive layer and the position of both ears in the width direction of the release sheet in the roll-shaped product of the tack seal type photographic paper in which the adhesive layer and the release sheet are provided on the back surface of the photographic paper. , Tack seal type photographic paper, characterized in that both ears of the adhesive layer are inside both ears of the release sheet.