JPH0980695A - Roll film for photography - Google Patents

Abstract

(57) [Summary] (Correction) [Problem] In the Brownie film represented by 120 size and 220 size, after the film is loaded into the camera, the camera can automatically detect information on film characteristics such as sensitivity from the film. A roll film for photography is provided. SOLUTION: At least one of a joining tape 1 of a light-shielding paper 3 and a film 2 in a 120-size and 220-size film packaging material, or at least one of spools is provided with a mark 4 which makes it possible to identify information relating to the film characteristics. is there.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is capable of providing information to a camera regarding sensitivity, size, or whether a light-sensitive material is color or black and white in a Brownie film, etc. Regarding roll film.

[0002]

2. Description of the Related Art In 35 mm photographic film, in order to promote automation of a camera, a code consisting of an electrically conducting part and an insulating part is provided on the outer wall of a cartridge containing a roll film, and the code is sensed on the camera side. Circuits are provided by providing contacts, and in the internal mechanism of the camera, it is possible to automate the sensitivity setting of the film to be used, the display of the number of films and the remaining number of films, auto return, end warning, setting of the exposure area and the like.

On the other hand, as a roll-shaped photosensitive material using light-shielding paper, (1) a film and light-shielding paper are superposed and
So-called cartridge type of 110 size and 126 size in a cartridge, (2) So-called 120 size film in which the film is fixed to the center of the entire length of the shading paper with a joining tape and the shading paper and the film are wound on a spool. (3) There is a so-called 220 size film in which a leader light-shielding paper is attached to the front end of the film and a trailer light-shielding paper is attached to the end of the film with a joining tape. Although an autofocus type camera has begun to appear as a camera using such a photographic roll film having light-shielding paper and a spool (hereinafter, simply referred to as a photographic roll film), it is used for the outer wall of the cartridge of a 35 mm photographic film. Regarding information on film characteristics such as sensitivity provided, information on film characteristics such as sensitivity has not been made due to the structure of the photographic roll film and the characteristics of the constituent materials, and no measures have been taken to cope with automation from the film side. The current situation is that the settling is done manually.

[0004]

DISCLOSURE OF INVENTION Problems to be Solved by the Invention
It is an object of the present invention to provide a photographic roll film of Brownie film typified by 0 size and 220 size, after the film is loaded into the camera, the camera can automatically detect information on film characteristics such as sensitivity from the film.

[0005]

The photographic roll film of the present invention is provided on at least one of a light-shielding paper in a 120-size and 220-size film packaging material, a joining tape between the light-shielding paper and the film, or a spool. A mark is provided to make it possible to identify information regarding characteristics.

The information desired to be provided on the photographic roll film includes ISO 25 to 3200 sensitivity information, size identification of 120 size or 220 size, identification of color film or black and white film, and For color films, information such as identification of negative or reversal can be mentioned. Especially, setting of sensitivity, type identification of 120 size or 220 size, and identification of color film or black and white film are automated. This is indispensable information.

In the 120-size and 220-size film packaging materials of the present invention, these marks can be provided on a light-shielding paper, a joining tape between the light-shielding paper and the film, or an arbitrary position on the spool. The photographic roll film is preferably loaded in the camera, and is preferably provided sequentially along the direction in which the film is taken up during shooting, preferably in combination with the start detection of the camera. It may have a double structure.

Marks that can identify these pieces of information include optical means such as bar codes and perforations, electrical means including a conductive portion and an insulating portion, or a combination thereof.

When the marks are provided on the photographic roll film, the marks are set in consideration of easy camera design, ease of mark recording, no influence on the photosensitive material, cost and the like. Most preferably, it is provided on the joining tape between the light-shielding paper and the film.

FIG. 1 schematically shows the starting point of a 120-size photographic roll film.
Is a plan view and (b) is a side view. In the figure, 1 is a bonding tape, 2 is a photosensitive material surface of a film, 3 is a black layer surface of light-shielding paper, and 4 is a bar code. The same applies to a 220-size photographic roll film.

The joining tape is provided for joining the light-shielding paper and the film at two positions, that is, the starting point and the ending point of the film in the photographic roll film. When the optical mark 4 is provided on the surface of the bonding tape 1, (1) the start detection of the camera and the information about the film characteristics such as sensitivity can be used together. (2) The bonding tape faces the optical system of the camera. Since it is arranged in such a manner, the information sensing means can be provided in parallel with the optical system of the camera without drastically changing the structure of the current camera, which facilitates the camera design. , A blank sheet is an optical reading means,
For example, it is easy to print a bar code. (4) The printing has an advantage that it can be printed in the step of winding the spool, and the cost is excellent.

The mark on the joining tape may be an electrical means such as a DX code or a CAS code having a conductive part and an insulating part, and in this case, it can be used together with the start detection of the camera. Although it can be formed by pattern printing, it is not preferable because the photosensitive material may be scratched by an electrical contact (for example, when the contact is a protrusion) in the camera, and the conductive portion and the insulating portion are not formed. However, there is a problem that even if the printing is performed, the cost is higher than that of the barcode printing.

Next, the case where a mark is provided on the light-shielding paper will be described. FIG. 2 is a plan view schematically showing a starting point on a 120-size photographic roll film.
In the figure, 5 is a light-shielding paper printing surface, and 4 is a bar code. 2
The same applies to a 20-size photographic roll film.

When the mark is provided on the light shielding paper, it is preferable to provide the mark on the leader light shielding paper portion 5 as shown in FIG. As the light-shielding paper, it is possible to use light-shielding paper as described below. However, when the optical mark 4 is provided on the surface of the photographic roll film having the printing portion (hereinafter referred to as the light-shielding paper printing surface 5), the bar code is printed. Further, there is an advantage that the printing is easy and the printing can be performed in the step of winding the spool, which is excellent in cost. However, the combined use of the camera start detection and information relating to film characteristics such as sensitivity requires that the holder section be provided with information sensing means when used in an Omega type camera, for example. Further, the printed surface of the light-shielding paper is located on the side of the back cover of the camera, but there is a problem in camera design such that it is necessary to provide information sensing means on the film supply housing part, the winding housing part, and the back cover part of the forward feed camera. There is also.

As a mark on the printed surface of the light-shielding paper, an electric means composed of a conductive portion and an insulating portion may be provided, and it is possible to form the pattern by pattern printing. When used in combination with, for example, an Omega type camera, it is necessary to provide an information sensing means in the holder part, and it is also necessary to provide an information sensing means in the film supply housing part or the back cover part of the progressive camera, Further, there is a difference in winding diameter between the 120 type and the 220 type, there is a problem in connection with the connection with the information sensing means, and there is a problem that cost is high and productivity is poor. It should be noted that when an electrical means including a conductive portion and an insulating portion is provided on the printed surface of the light-shielding paper and an electrical reading is performed on the back cover, it is necessary to use an optical position detecting means together.

A case will be described in which an optical mark is provided on the light-shielding paper surface of the photographic roll film on the side of the light-sensitive material layer, which has the light-shielding layer (hereinafter referred to as black surface of light-shielding paper). FIG. 3 is a plan view schematically showing a starting point in a 120-size photographic roll film.
In the figure, 1 is a bonding tape, 2 is a photosensitive material surface of a film, 3 is a black layer surface of light-shielding paper, and 4 is a bar code. The same applies to a 220-size photographic roll film.

Since the black layer 3 of the shading paper is arranged so as to face the optical system of the camera, the information sensing means is provided in parallel with the optical system of the camera without significantly changing the structure of the existing camera. And has the advantage of facilitating the camera design, and the black layer 3
For example, the barcode 4 can be printed, but it is necessary to print the background color or print with an ink having a concealing property, which increases the cost. In addition, it is advantageous in terms of cost that the information is not the bar code but the pattern perforation capable of reading the information by the transmitted light.

As the mark on the black layer 3 of the light-shielding paper,
It is possible to form by pattern printing as an electric means consisting of a conductive portion and an insulating portion, but it is not preferable that the photosensitive material is scratched by the electric contact in the camera, and the conductive portion and the insulating portion are not preferable. There is a problem that the printing consisting of is expensive.

Next, as shown in FIG. 4, a mark may be provided on the outer peripheral surface of the spool flange of the photographic roll film. FIG. 4 is a side view of the spool of the photographic roll film. In the figure, 6 is a spool shaft and 4 is a bar code.

In this case, it is possible to provide an information sensing means in the film supply housing part of the existing camera, and it is possible to print a bar code, but it is possible to detect information about film characteristics such as camera start detection and sensitivity. There is a problem that they cannot be used in combination, the cost is high, and the productivity is low.

As a mark on the outer peripheral surface of the spool flange, an electric means composed of a conductive portion and an insulating portion may be provided, and the information sensing means in the camera can be provided in the chucking portion in the supply housing portion. It is easy and pattern printing is possible, but
Since it cannot be used together with the camera start detection, there is a problem that the cost is high and the productivity is poor.

Next, the light-shielding paper and the joining tape between the light-shielding paper and the film in the photographic roll film of the present invention will be described.

As the light-shielding paper, a light-shielding black paper, or a light-shielding paper having a light-shielding effect by coating or laminating a base paper with a resin in which carbon black is dispersed as a light-shielding agent is used. Depending on the required characters, symbols,
Other printing may be performed to enhance the commercial value, but it is possible to provide a barcode, a conductive portion, or an insulating portion by printing, sticking, or the like.

As a concrete example of the light-shielding paper, it is possible to prevent the photographic film from adhering to the light-shielding paper under high temperature and high humidity, gas fogging, slack winding caused by large bending rigidity, and dimensional instability due to moisture absorption. For this purpose, a light-shielding paper provided with at least one aluminum layer on the support (JP-A-55-140835, JP-B-61-36216), high-density polyethylene and low-density polyethylene for improving chargeability and sharpness at the time of perforation Light-shielding paper provided with a layer consisting of
No.), low temperature heat sealability, foreign matter sealability, and shading paper provided with a laminated film of ethylene polymer, acrylic acid ester, methacrylic acid ester, and vinyl acetate / ethylene copolymer for improving sharpness 59-682
No. 38), a light-shielding paper which prevents neck-in when the intermediate layer and the surface layer are melt-coextruded and applied on a support (Japanese Patent Laid-Open Publication No. Sho.
No. 8-186744), a light-shielding paper (JP-A-58-17434) processed on one or both sides with a layer formed of a polyolefin or a mixture of polyolefins, and an absorption band at a wavelength of 550 mμ or more for increasing the light-shielding property. Light-shielding paper using the coating composition (Japanese Unexamined Patent Publication No. 52-150016), light-shielding paper coated with a copolymer such as methyl methacrylate, methacrylic acid, and ethyl acrylate (Japanese Unexamined Patent Publication No. 50-67644).
No.), a light-shielding paper coated with a copolymer of ethylene with at least one of acrylic acid ester and methacrylic acid ester (Japanese Patent Application Laid-Open No. 48-22020, Japanese Patent Publication No.
1-49205), a light-shielding paper provided with a plurality of carbon black layers on a paper support (US Pat. No. T871,004),
Light-shielding paper (UK Patent No. 1,156,302) obtained by printing on one side of a paper and extruding and laminating a carbon black-containing polyethylene layer on the other side, a protective layer is provided on the printed side of the paper, and carbon black is on the other side. Light-shielding paper processed with a layer of vinylidene chloride or styrene-butadiene copolymer containing (US Pat. Nos. 2,646,365 and 2,646,36).
No. 6, No. 2,751,309, No. 2,959,492
No. 3,053,779), a light-shielding paper in which polyethylene containing carbon black is processed on the surface of a support by extrusion (French Patent 1,449,852, British Patent 1,071,032), Light-shielding paper coated with a mixture of ethylene / vinyl acetate copolymer and carbon black (German Patent 1,903,378) and the like can be used.

As the joining tape, one side of a base material such as paper or a plastic film can be provided with a bar code, a conductive portion, an insulating portion by printing, pasting or the like. On the other side, as a pressure-sensitive adhesive, for example, styrene-isoprene-styrene block copolymer, styrene butadiene rubber, polybutene rubber, polyisoprene rubber, butyl rubber, natural rubber, rubber typified by synthetic isoprene, To adjust the glass transition temperature, rosin, dammer, copal, hydrogenated rosin, rosin ester, indene chroman, picopearl, polyterpene, nitrocellulose, alkyd resin, butone,
A tackifying resin typified by xylene resin, a plasticizer such as DOP, TCP, DBP, and BBP as a softening agent, a rubber-based pressure-sensitive adhesive to which chlorinated paraffin, animal and vegetable oils, mineral oils, etc. are added, or methyl acrylate, acrylic Ethyl acid,
Butyl acrylate, hexyl acrylate, acrylic acid 2
-Ethylhexyl, isooctyl acrylate, octyl acrylate, acrylic ester such as decyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, hexyl methacrylate, 2-ethylhexyl methacrylate, isooctyl methacrylate, octyl methacrylate. Acrylic pressure-sensitive adhesives obtained by dissolving homopolymers or copolymers of esters such as methacrylic acid esters such as decyl methacrylate in a suitable solvent, or these esters and acrylic acid, methacrylic acid An acrylic pressure-sensitive adhesive obtained by dissolving a copolymer with a vinyl compound having a functional group such as itaconic acid, crotonic acid and maleic acid in a suitable solvent is used. In the case of using the copolymer having this functional group, in order to further enhance the heat resistant aggregation effect, a copolymer having a small amount of an isocyanate type organic cross-linking agent that reacts with the functional group is used.

As the heat-sensitive adhesive, polyolefin such as polyethylene, vinyl acetate copolymer such as ethylene-vinyl acetate copolymer, acrylic ester copolymer system such as ethylene-ethylene acrylate and ethylene-isobutyl acrylate are used. , Nylon 6, nylon 6.
6, Nylon 10, Nylon 12, polyamides such as N-methoxymethylated nylon, terephthalic acid polyesters, polyvinyl butyral, polyvinyl acetate, acetate, methyl cellulose, cellulose derivatives such as acetate butyrate, polymethyl Polymethacrylate ester such as methacrylate, polyvinyl ether such as polyvinyl methyl ether, polyurethane,
Polycarbonate type, styrene type block copolymer type such as styrene-butadiene-styrene, synthetic rubber type such as styrene butadiene, isoprene and butyl rubber, or special rubber type not included in these, and acrylic type copolymer weight not included above Examples include one kind or a mixture of two or more kinds selected from coalescence.

Such light-shielding paper, joining tape, or
The marks provided on the spool include optical means and electrical means. As the optical means, for example, JIS
The bar code symbol defined in B9550-1978 can be used, and in the case of light-shielding paper, instead of the bar code, it is also possible to use a pattern perforation capable of identifying information by transmitted light. The barcode may be provided by sticking a barcode label on a light-shielding paper or a bonding tape, but may be directly formed by printing, an inkjet method, a hot stamp method, or the like.

As the ink used for printing, one which is harmless to the photosensitive material is selected and can be selected from the commonly used offset printing ink, gravure printing ink or UV ink.

Typical synthetic resins used in these inks are vinyl chloride diameter, nitrification cotton, polyester polyamide urethane, polyacrylic, rosin-modified maleic acid, ethylene vinyl acetate, vinyl ether, urethane vinyl acetate, and vinyl chloride. Biurethane resin, Modified alkyd resin Modified phenol resin, Alkali-soluble resin (Rosin modified maleic acid resin, Styrene maleic acid resin, Styrene acrylic acid resin, Acrylic acid ester acrylic acid resin, Methacrylic acid ester acrylic acid resin), Hydrosol type resin (Styrene maleic acid resin, styrene acrylic acid resin, α-methylstyrene acrylic acid resin, acrylic ester acrylic acid resin,
Methacrylate acrylate resin), Emulsion type resin (styrene resin, styrene acrylate resin, acrylate copolymer resin, methacrylate copolymer resin), resin for UV ink has acrylic unsaturated group Polymers are commonly used,
Typical examples are polyester / acrylate, polyester / urethane resin / acrylate, epoxy resin / acrylate, pentaerythritol triacrylate, trimethylolpropane triacrylate, hexanediol diacrylate, neopentyl glycol diacrylate, Triethylene glycol diacrylate and hydroxyethyl methacrylate. Further, generally known colorants for barcode printing are used together with these inks. Examples of the colorant used include various pigments and azo pigments (azo lakes; described in JP-A-63-44653).
Carmine 6B, red 2B, insoluble azo; monoazo yellow (PY-1, -3), disazo yellow (PY-1)
2, -13, -14, -17, -83), pyrazolo orange (PO-B-34), vulcan orange (PO-1)
6), condensed azo type; Chromophthal Yellow (PY-9)
3, -95), chromophthal red (PR-144,-
166), a polycyclic pigment [phthalocyanine-based; copper phthalocyanine blue (PB-15, -15-1, -15-
3), copper phthalocyanine green (PG-7)], dioxazine-based; dioxazine violet (PV-2
3), isoindolinone type; isoindolinone yellow (PY-109, -110); sulene type: berylen, berynone, flavanthrone, thioindigo, lake pigment (malachite green, rhodamine B, rhodamine G,
Victorial blue B) Inorganic pigments (oxides; titanium dioxide, red iron oxide, sulfates; precipitated barium sulfate, carbonates; precipitated calcium carbonate, silicates; hydrous silicates, anhydrous silicates, metal powders; aluminum powders, Bronze powder, zinc dust, carbon black, yellow lead, navy blue, etc. may be added, and these pigments may be added to the above-mentioned resin or paper layer as a light-shielding substance. In addition, various solvents, dispersants, wetting agents, defoaming agents, leveling agents, thickeners, stabilizers, cross-linking agents, waxes, etc. may be used as raw materials for the ink. Additives such as dryers are used.

Further, instead of the method of forming the parcode by printing, it may be formed by an ink jet method.

In the case of the ink-jet method, inks are generally classified into aqueous type and solvent type (oil type). As the water-based ink, a water-soluble dye is used as a colorant, water is used as a solvent, monohydric and dihydric alcohols are used as a water-soluble solvent, and polyhydric alcohols, water-soluble nitrogen compounds and hygroscopic organic compounds are added as wetting agents. Good. As the oil-based ink (solvent), an oil-soluble dye is used as a coloring agent, and a solvent of a poorly water-soluble solvent (glycol ether, ester) or a water-insoluble solvent (isoparaffin, etc.) is used. The adjusted one can be used.

Further, it may be formed by transfer by a hot stamping method. In this case, a bar code may be formed on the transfer film so that the bar code can be transferred by heat, and then the bar code is formed on the photographic roll film.

In the case of such a hot stamping method, heat resistant pigments such as carbon black, navy blue, phthalocyanine blue, lake red G, calcium carbonate, alumina white, clay and titanium dioxide are mainly used as pigments in the ink. In addition, extender pigments such as silica and barium sulfate, and pigments having a small oil absorption amount are added to improve sharpness. Examples of the resin include rosin ester, terpene phenol, hard resin such as petroleum resin, acrylic copolymer, ethylene-vinyl acetate copolymer, cyclized rubber, vinyl chloride-vinyl acetate copolymer, natural carnauba wax, montan wax. A single wax or a mixture of synthetic wax, low molecular weight polyethylene and the like can be used.

As a bar code forming surface, a bar code can be formed as it is in the case of a bonding tape or a light-shielding paper printing surface. After solid printing of white, yellow and silver, a bar code can be formed or blank characters can be used.

In solid printing or blank printing of white, yellow and silver colors, titanium oxide, clay, mica, alumina, calcium silicate, aluminum hydroxide as pigments are used in the method of forming the above-mentioned bar code by printing.
It may be formed by printing using an ink formed by using an inorganic pigment such as calcium carbonate or barium sulfate, or an aluminum powder or a metal powder such as bronze powder.

A varnish may be applied to protect the bar code. At this time, as the type of varnish used, acrylic resin, cellulose resin such as fibrin acetate, urethane resin, epoxy resin, polyester resin,
Appropriate resins such as ionomer resins, EEA resins, various polyethylene resins (low density, high density, linear low density, polyethylene, etc.) polypropylene resins can be used. Also, wax can be used.

Further, instead of the bar code, a pattern may be punched in a bonding tape or light-shielding paper, information such as sensitivity may be displayed, and information sensing means for identifying the pattern of light transmission may be provided on the camera side. The mechanical strength of the photographic roll film should be taken into consideration.

When the conductive portion and the insulating portion are formed as marks for identifying the information relating to the film characteristics, the CAS code (Came) shown in a checkered pattern used in 35 mm photographic film cartridges is used.
Ra Auto Sensing Code camera auto-sensing code) may be used.

[0039]

FUNCTION AND EFFECTS OF THE INVENTION At least one of the light-shielding paper, the joining tape between the light-shielding paper and the film, or the spool in the 120-size and 220-size film packaging materials is provided with a mark that enables identification of information relating to the film characteristics. As a result, the sensitivity of Brownie film,
Information can be provided to the camera regarding size, whether the light sensitive material is color or black and white, etc., enabling automation. Hereinafter, the present invention will be described in detail with reference to examples.

[0040]

EXAMPLE The structure of the light-shielding paper is as follows. Mixed pulp of 30% softwood pulp and 70% hardwood pulp, cationized polyacrylamide as paper strength agent, rosin derivative as sizing agent, aluminum sulfate as fixing agent,
Using a polyvinyl alcohol containing calcium carbonate and titanium oxide as a surface sizing agent, fourdrinier paper making 75-
A base paper of 80 μm and 80 g / m ² was prepared. A 20 μm light-shielding film was produced by inflation of LDPE containing 18% by weight of acetylene black.
After sticking this light-shielding film and the above-mentioned base paper using a polyurethane dry laminating adhesive, gravure printing is performed on the base paper using polyamide / nitrified cotton mixed resin with an ink selected from the above-mentioned pigments as a coloring agent. Then, polymethylmethacrylate 1-2 μm is gravure-printed on the printed cotton as an overcoat layer (protective layer) to give a total film thickness of 100-10.
A 5 μm shading paper was obtained.

A photosensitive film having a total film thickness of ISO 400 of 95 μm was prepared as a photosensitive material.

The bonding tape was prepared by fourdrinier paper using a mixed pulp of 20% softwood pulp and 80% hardwood pulp, cationized polyacrylamide as a paper strengthening agent, a rosin derivative as a sizing agent, and aluminum sulfate as a fixing agent. , 12 μm of white layer in which kaolin, calcium carbonate and titanium oxide are dispersed in polyvinyl alcohol and acrylic emulsion is applied, and a base paper with a total film thickness of 100 μm is prepared. Isoprene is used as a pressure sensitive adhesive on the side opposite to the white layer. A label was prepared by applying an adhesive agent of 30 μm and printing a barcode on the white layer by a hot stamp method.

A light-sensitive film was attached to the center of the black layer surface of the light-shielding paper produced above, and the photosensitive material layer side at both ends in the longitudinal direction of the film and the black layer side of the light-shielding paper were joined with a joining tape to obtain 120 size. The roll film of was produced.

The information in the bar code is, for example, in order from the film start side, camera start information, film sensitivity information, 120 size information, color film information, negative information, and end information. However, the information recording form is arbitrary.

The photographic roll film thus produced has a bar code sensing means in parallel with the optical system inside the camera, senses the bar code immediately before the film starts, and sets the exposure condition based on the information. When loaded into a camera that can be used, it may be possible to automate photographing using a roll film for photography.

[Brief description of drawings]

FIG. 1 is a schematic view showing a starting point of a 120-size photographic roll film, FIG. 1 (a) is a plan view and FIG. 1 (b) is a side view.

FIG. 2 is a plan view schematically showing a starting point of a 120-size photographic roll film.

FIG. 3 is a plan view schematically showing a starting point in a 120-size photographic roll film.

FIG. 4 is a side view of a spool in a photographic roll film.

[Explanation of symbols]

1 is a bonding tape, 2 is a photosensitive material surface of a film, 3
Is a black layer surface of light-shielding paper, 4 is a bar code, 5 is a light-shielding paper printing surface, and 6 is a spool shaft.

Claims (5)

[Claims] 1. At least one of light-shielding paper, film-bonding tape of the light-shielding paper and film, or spool in 120-size and 220-size film packaging materials is provided with a mark that enables identification of information relating to the film characteristics. A photographic roll film characterized by. 2. A photographic roll film according to claim 1, wherein the information on film characteristics is sensitivity, size, color or black and white. 3. The photographic roll film according to claim 1, wherein a mark for identifying a film characteristic is provided on a joining tape between light-shielding paper and the film and is sensed in combination with the start detection of the camera. . 4. The photographic roll film according to claim 1, wherein the mark that allows the film characteristics to be identified is a mark that can be read by an optical means. 5. The photographic roll film according to claim 4, wherein the mark read by optical means is a bar code.