JP2896353B2 - Photographic film cartridge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographic film cartridge containing a photographic film (a silver halide photographic material). More specifically, the present invention relates to a photographic film cartridge in which the degree of curling of a photographic film is reduced by adjusting the ratio of the thickness of a photosensitive layer to that of a back layer.

[0002]

2. Description of the Related Art In recent years, the graininess, sharpness and color reproducibility of a photographic film (silver halide photographic material), mainly a color negative film (silver halide color negative photosensitive material), and a zoom lens or a bifocal lens have been improved. The widespread use of cameras equipped with lenses has made it possible to obtain a variety of high-quality photos.

However, in a camera equipped with a zoom lens or a bifocal lens, increasing the focal length on the telephoto side increases the size of the camera and deteriorates portability. Conversely, if priority is given to miniaturization of the camera, a sufficient telephoto effect is obtained. It had the disadvantage of not having a camera.

As means for solving the above problems, US Pat. No. 3,490,844, US Pat. No. 4,583,831 and US Pat. No. 4,650,304 have focused on recent advances in the performance of color negative films. Therefore, a proposal has been made on a so-called pseudo-zoom method. This pseudo-zoom method detects the focal length information of the lens input to the photographic film or cartridge in some way during the photographing stage, detects the information at the printing stage, enlarges a part of the screen of the color negative film, and consequently enlarges the image. It is intended to give a telephoto effect to the object. The conventionally proposed pseudo-zoom method presupposes a 135-format color negative film which is currently mainstream.

[0005]

However, it has been found that the image quality, especially sharpness, is insufficient when the above-described pseudo-zoom method is performed using a 135-format color negative film which is currently mainstream. The pseudo-zoom is different from a simple large-size print, and corresponds to cutting out a part of a large-size print into a small-size print.
The viewing distance of the small size print is smaller than that of the large size print. Therefore, sharpness is extremely important in small-size prints made by pseudo-zoom.

As a result of various studies by the present inventors, when the humidity at the time of photographing changes, the curl state of the photographic film changes, and the position of the photographic film on the exposure stage of the camera deviates from the focus plane. It was found that sharpness was significantly reduced in prints to which the telephoto effect was applied.

Further, it has been found that photographic film is flawed as a serious problem caused by the enlargement magnification in the pseudo zoom print system. As a result of numerous investigations, the scratches on the back of the photographic film are very conspicuous and frequently appear at 5% of the total scratches because they appear white on the print.
It was found that the amount reached 0% or more. Therefore, it has been found that the improvement of the scratch on the back side of the photographic film is another new problem for improving the image quality of the print obtained by the pseudo zoom print system.

In view of the above, a first object of the present invention is to provide a photographic film cartridge capable of obtaining a print with excellent sharpness by reducing the curl of the photographic film.

A second object of the present invention is to provide a photographic film cartridge suitable for a pseudo zoom print system.

[0010]

The object of the present invention comprises a photographic film and a cartridge for accommodating the photographic film. The cartridge comprises a spool shaft for winding the photographic film in a roll, and a photographic film. In a photographic film cartridge comprising a cartridge body having a film outlet for taking in and out and rotatably housing the spool shaft around an axis, a photosensitive layer having a total film thickness of 30 μm or less is formed on one side of the transmission support, This is achieved by a photographic film cartridge characterized in that a back layer containing a hydrophilic polymer and having a thickness of at least 20 % and at most 70 % of the total thickness of the photosensitive layer is formed on the remaining one side. .

That is, the present invention reduces the degree of curl of a photographic film by providing a back layer on the opposite side of the photosensitive layer, thereby improving the sharpness, and also improves print quality due to scratches on the photographic film. To prevent deterioration.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A photographic film cartridge according to the present invention comprises a photographic film and a cartridge for accommodating the photographic film. As shown schematically in FIG. 1, the cartridge (1) comprises a cartridge body (1a) having a film outlet (3) and a cartridge body (1a).
a) and a spool shaft (4) rotatably housed therein. The spool shaft (4) winds the photographic film (2) in a roll.

When the cartridge (1) is loaded in the cartridge loading chamber 13, the film outlet (3)
In the plane (A) including the exposure stage (12) of the camera body (11), and the orientation (B) of taking and taking out the photographic film is parallel to the photographic film winding direction (C) in the camera. It has means for controlling.

By providing the attitude control means, the photographic film cartridge is loaded into the camera, and the exposure stage (12) is protruded from the film outlet (3) of the cartridge (1) to the inside of the camera on the other side. When the photographic film (2) is passed to the film winding means, the flatness of the photographic film (2), especially the cartridge (1)
Photographic film (2) near the film exit (3)
Can be kept flat.

In order to maintain the flatness, basically, the cartridge (1) should be prevented from rotating around the spool shaft (4) in the cartridge loading chamber (13) in the camera. Specifically, the cartridge (1)
It is preferable to provide means for engaging with the camera so as to maintain the flatness. Further, in order to obtain a better engagement relationship, it is preferable to improve the accuracy of the external dimensions of the cartridge (1). Especially the port part (the part of the film outlet 3)
It is preferable to improve the accuracy of the length dimension. Specific means for setting the attitude control of the cartridge, in other words, means for engaging the cartridge with the camera include, for example, the following.

First, the surface of the cartridge (1) perpendicular to the spool shaft (4) (excluding the film exit portion) can be made non-circular and engaged with the cartridge loading chamber of the camera. The surface perpendicular to the spool shaft (4) to be non-circular may be any of the body and the side edge of the cartridge body, but only the side edge or both the body and the side edge Is preferred.

As an example in which the side edge is non-circular, the position of the cartridge in the camera is controlled by making the cross-sectional area (S2) of the side edge larger than the cross-sectional area (S1) of the body of the cartridge body. Can also. However, if the cross-sectional area (S2) of the side edge portion is too large, it is not preferable for miniaturization of the camera.
Or less, preferably 1.1 or less, particularly preferably 1.05
It is as follows.

Specifically, as shown in FIGS. 5 and 6, a cartridge (1) comprising a side edge portion having a non-circular portion (21) and a body portion (22) having a circular cross section is provided. Can be mentioned. The non-circular part (21) and preferably the body part (22) can be engaged with the camera in a posture-controlled manner by springs (32, 33) provided in the cartridge loading chamber (13) of the camera. preferable.

As an example in which the body is non-circular, as shown in FIG. 2, at least one side surface of the body of the cartridge body may be flat. The above-mentioned planar shape is sufficient if the side surface of the cartridge main body has sufficient flatness for controlling the posture, and may have a certain degree of curved surface. Also, the plane of the cartridge body is aligned with a specific surface of the cartridge loading chamber in the camera,
It is preferred that the contact be made substantially. Here, the term “substantially” means a contact sufficient for controlling the posture, and does not necessarily mean a complete contact.

As a means for engaging the cartridge with the camera,
Second, the cartridge and the camera are provided with at least one joining portion that can be held in the cartridge loading chamber in the camera so that the attitude of the cartridge can be controlled.

The location, number, and shape of the joints may be any as long as the attitude of the cartridge can be controlled. For example, as the joining means, there can be mentioned a method of providing a so-called projection and a recess fitted therein to the camera and the cartridge, respectively.

For example, as shown in FIG. 3, a protruding projection (8) is provided on the side edge (6) of the cartridge main body, and can be engaged with a recess provided in the cartridge loading chamber of the camera. . Such engaging means is preferably provided on both end faces of the cartridge.

Alternatively, as shown in FIG. 4, a linear projection (9) is provided on the side surface (5) of the cartridge body.
It can be engaged with a linear recess that fits into the projection provided in the cartridge loading chamber of the camera.

As shown in FIG. 5, a projection (27) is provided at the film outlet of the cartridge main body, and can be engaged with a recess (26) provided on an exposure stage of a camera. Such protrusions may be provided at any of the film outlets (3), and may be provided, for example, linearly along the film outlet, or at one location at the center of the film outlet.

In the above, each of the projections may be provided on the camera side, and the recess fitted to the projection may be provided on the cartridge. In addition, the projection and the recess need only have a fitting relationship sufficient to achieve the posture control.

As a further joining means, there is a method of providing at least one set of projections on both the camera and the cartridge, and holding the cartridge in the cartridge loading chamber in the camera by joining the projections.

For example, as shown in FIGS. 5 and 6, the protrusion (23) of the cartridge and the protrusion (34) in the camera,
Projection on cartridge (24) and projection on camera (35)
Thereby, each cartridge can be held in the cartridge loading chamber in the camera. It is sufficient if any one of the holding means is used. Further, the holding means by the projection (24) of the cartridge and the projection (35) in the camera may be provided on both end surfaces of the cartridge.

Further, in order to better set the above attitude control, the dimensional accuracy of the outer shape of the cartridge body is set to ± 0.
It is preferably at most 5 mm, more preferably at most ± 0.3 mm. In order to further control the posture, the dimensional accuracy of the length of the port portion is preferably ± 0.3 mm or less, more preferably ± 0.2 mm or less, and more preferably ± 0.1 mm or less. Is particularly preferred.

In order to ensure this accuracy, it is preferable to mold the cartridge using a plastics material. This plastics material includes addition polymerization of olefins having carbon-carbon double bonds, ring-opening polymerization of small ring compounds, polycondensation (condensation polymerization) between two or more polyfunctional compounds, polyaddition, and phenol derivatives. , A urea derivative, a melamine derivative, and a compound having an aldehyde.

The raw material of the plastics material is an olefin having a carbon-carbon double bond, for example, styrene,
α-methylstyrene, butadiene, methyl methacrylate, butyl acrylate, acrylonitrile, vinyl chloride, vinylidene chloride, vinyl pyridine, N-vinyl carbazole, N-vinyl pyrrolidone, vinylidene cyanide, ethylene, propylene, etc. as typical ones No. Examples of small ring compounds include ethylene oxide, propylene oxide, glycidol, 3,3
-Bischloromethyloxetane, 1,4-dioxane,
Representative examples include tetrahydrofuran, trioxane, ε-caprolactam, β-propiolactone, ethyleneimine, and tetramethylsiloxane.

Examples of the polyfunctional compound include carboxylic acids such as terephthalic acid, adipic acid and glutaric acid; isocyanates such as toluene diisocyanate, tetramethylene diisocyanate and hexamethylene diisocyanate; and alcohols such as ethylene glycol, propylene glycol and glycerin. And amines such as hexamethylenediamine, tetramethylenediamine, and paraphenylenediamine, and epoxies. Also, phenol derivatives, urea derivatives,
Representative melamine derivatives include, for example, phenol, cresol, methoxyphenol, chlorophenol, urea, melamine and the like. Further, examples of the compound having an aldehyde include formaldehyde, acetaldehyde, octanal, dodecanal, and benzaldehyde. These materials may be used alone or in combination of two or more depending on the target performance.

When a plastics material is produced using these raw materials, a catalyst or a solvent may be used in some cases. Examples of the catalyst include (1-phenylethyl) azodiphenylmethane, dimethyl-2,2′-azobisisobutyrate, 2,2′-azobis (2-methylpropane), benzoyl peroxide, cyclohexanone peroxide, potassium persulfate Radical polymerization catalysts such as sulfuric acid,
Cationic polymerization catalysts such as toluenesulfonic acid, trifluorosulfuric acid, perchloric acid, trifluoroboron and tin chloride,
Anionic polymerization catalysts such as n-butyllithium, sodium / naphthalene, 9-fluorenyllithium, and phenylmagnesium bromide; and triethylaluminum / tetrachlorotitanium Ziegler-Natta (Ziegler-Na
tta) A catalyst such as sodium hydroxide, potassium hydroxide, potassium metal or the like is used.

The solvent is not particularly limited as long as it does not inhibit polymerization, but examples thereof include hexane, decalin, benzene, toluene, cyclohexane, chloroform, acetone, methyl ethyl ketone, ethyl acetate, butyl acetate, and tetrahydrofuran.

In molding the plastics of the present invention, a plasticizer is mixed with the plastics as necessary. Typical examples of the plasticizer include trioctyl phosphate, tributyl phosphate, dibutyl phthalate, diethyl sebacate, methyl amyl ketone, nitrobenzene, γ-valerolactone, di-n-octyl succinate, bromonaphthalene, and butyl palmitate. It is something.

The following are specific examples of the plastics material used in the present invention, but the present invention is not limited thereto. P-1 polystyrene P-2 polyethylene P-3 polypropylene P-4 polymonochlorotrifluoroethylene P-5 vinylidene chloride resin P-6 vinyl chloride resin P-7 vinyl chloride-vinyl acetate copolymer resin P-8 acrylonitrile-butadiene- Styrene copolymer resin P-9 Methyl methacrylic resin P-10 Vinyl formal resin P-11 Vinyl butyral resin P-12 Polyethylene phthalate P-13 Teflon P-14 Nylon P-15 Phenol resin P-16 Melamine resin

[0036] Particularly preferred plastics materials for the present invention are polystyrene, polyethylene, polypropylene and the like.

Usually, the cartridge is manufactured using a plastic into which carbon black, a pigment or the like has been kneaded in order to impart light-shielding properties. In order to impart light-shielding properties, carbon black or pigment is used in an amount of 0.1 to 0.8% by weight, preferably 0.2 to 0.5% by weight, based on the plastic material.

Japanese Patent Application Laid-Open Nos. 1-231045 and 2
-124564, U.S. Pat. No. 4,832,275
No. 4,846,418, U.S. Pat.
No. 8,693, U.S. Pat. No. 4,834,306, U.S. Pat. No. 4,445,768, U.S. Pat. No. 4,423,943.
The present invention can be applied to a cartridge of a type in which a photographic film is fed out of a cartridge by rotation of a spool shaft, as described in Japanese Patent Application Laid-Open No. H10-26095.

Next, the photographic film according to the present invention will be described in detail. In the photographic film of the present invention, the total thickness of the photosensitive layer is 30 μm or less, preferably 25 μm or less, more preferably 21 μm or less, and 12 μm or more. The total thickness of the photosensitive layer includes the antihalation layer in contact with the transmission support (base), the uppermost protective layer, and other intermediate layers.
If the total thickness of the photosensitive layer of the photographic film is too large, the humidity dependence of the flatness of the photosensitive material in the exposure station of the camera is undesirably strong.

If the total thickness of the photosensitive layer is too small, the scratch resistance of the photosensitive layer deteriorates, which is not preferable. The total thickness of the photosensitive layer can be easily measured using a micrograph of a cross section of the photosensitive material or a thickness gauge.

The back layer of the photographic film of the present invention comprises 15% to 90%, preferably 20%, of the total thickness of the photosensitive layer.
It is 70% or less, more preferably 25% or more and 60% or less. Thus, by controlling the thickness of the photosensitive layer and the back layer to suppress the degree of curl, the flatness of the photographic film is improved, and as a result, the sharpness of the image is improved.

In order to maintain a proper curl state on the exposure stage in the camera in a wide range of humidity, it is necessary to keep the back layer thinner than the photosensitive layer. If the back layer is too thick relative to the photosensitive layer, the curl of the photographic film causes the photographic film to float out of the pressure plate to the lens side when the humidity is low, resulting in poor focus. Also, if the back layer is too thin relative to the photosensitive layer, when the humidity is high,
The curl of the photographic film undesirably causes the photographic film to float out of the pressure plate to the lens side, resulting in poor focus.

Examples of the hydrophilic polymer used in the back layer of the present invention include the following, but are not limited thereto. Gelatin, colloidal albumin, casein, carboxymethyl cellulose, cellulose derivatives such as hydroxyethyl cellulose, agar, sodium alginate, starch derivatives, sugar derivatives such as dextran, synthetic hydrophilic polymers such as polyvinyl alcohol,
Poly N-vinyl pyrrolidone, polyacrylic acid copolymer,
Polyacrylamide or derivatives thereof, partial hydrolysates, gelatin derivatives and the like can be used. Particularly, gelatin is preferred.

The gelatin used herein includes so-called lime-processed gelatin immersed in an alkaline bath before gelatin extraction, acid-processed gelatin immersed in an acid bath, and double-immersed gelatin that has been subjected to both processes during the production process. ,
Any of enzyme-treated gelatin may be used.

The effect of the back layer of the photographic film becomes significant when the thickness of the transmission support is reduced. It is important to make the transparent support thinner in order to make the cartridge smaller and the camera thinner. The thickness of the transparent support of the light-sensitive material of the present invention is from 20 μm to 150 μm, preferably
It is 0 μ to 100 μ, more preferably 60 μ to 90 μ.

The back layer is composed of one or more layers. In order to strengthen the adhesive force between the back layer and the permeable support, at least one layer preferably contains a high-boiling organic solvent. As the high-boiling organic solvent, any of those well-known in the art can be used.

For example, alkyl phthalates (eg, dibutyl phthalate, dioctyl phthalate, dicyclohexyl phthalate), phosphates (eg, diphenyl phthalate, triphenyl phosphite, tricresyl phthalate, dioctyl butyl phthalate, Trioctyl phosphate, trihexyl phosphate, tricyclohexyl phosphate, etc.) citrate (eg, tributyl acetyl citrate), benzoate (eg, octyl benzoate), alkylamide (eg, diethyl lauramide), fatty acid ester ( For example, dibutoxyethyl succinate, dioctyl azelate), trimesic esters (eg, tributyl trimesate) and the like can be mentioned.

The amount of the high boiling organic solvent used in the present invention is 1
0.01-0.40g per square meter, especially 0.05
It is preferable to be 0.30 g.

The backing layer of the present invention may further contain a surfactant, an antistatic agent, a hardener, a slipping agent, a matting agent dye and the like, if necessary.

The number of the back layers is preferably two or more. When a high boiling point organic solvent is contained in a layer close to the permeable support, it is effective in improving the adhesive strength with the permeable support. The ratio (Wt ratio) of high boiling organic solvent to gelatin is 0.1 to
0.7 is preferred. The addition of a matting agent, a lubricating agent, or the like to a layer far from the permeable support is effective for preventing adhesion between the back surface and the surface and for imparting slipperiness.

For imparting scratch resistance, it is effective to lower the oil / gelatin ratio in the layer far from the transparent support than in the layer near the support.

The antistatic agent that can be contained in the back layer is not particularly limited. For example, the anionic polymer electrolyte is a polymer containing a carboxylic acid, a carboxylate and a sulfonate. No. 22017, JP-A-46-24159, JP-A-51-30725, JP-A-51-129216, and JP-A-55-95942. Examples of the cationic polymer include those described in JP-A-49-121523, JP-A-48-91165, and JP-B-49-24582. Further, ionic surfactants also have anionic and cationic properties.
No. 9-85826, JP-A-49-33630, U.S. Pat. No. 2,992,108, U.S. Pat. No. 3,206,312
No., JP-A-48-87826, JP-B-49-1156.
7, JP-B-49-11568, JP-A-55-708
No. 37 and the like.

Further, a fluorine-containing compound described in JP-A-62-215949 and a compound having a quaternary nitrogen can be used in combination.

Further preferable examples of the antistatic agent include:
ZnO, TiO_Three, SnO_Two, Al _TwoO_Three, In
_TwoO_Three, SiO_Two, MgO, BaO, MoO_ThreeFrom within
At least one selected crystalline metal oxide or
Fine particles of these composite oxides.

The fine particles of the conductive crystalline oxide or its composite oxide that can be contained in the back layer have a volume resistivity of 1%.
It is not more than 0 ⁷ Ωcm, more preferably not more than 10 ⁵ Ωcm.
The particle size is 0.01 to 0.7 μm, especially 0.0
Desirably, it is 2 to 0.5 μm.

A method for producing the fine particles of the crystalline metal oxide or the composite oxide is described in JP-A-56-14343.
No. 0 and No. 60-258541. First, metal oxide fine particles are prepared by firing, and heat treatment is performed in the presence of a heteroatom for improving conductivity. Second, a heterogeneous method for improving conductivity when manufacturing metal oxide fine particles by firing is used. How to make atoms coexist,
Thirdly, it is easy to introduce an oxygen defect by lowering the oxygen concentration in the atmosphere when producing metal fine particles by firing. Examples including heteroatoms include Al for ZnO,
Examples include In and the like, Nb and Ta for TiO2, and Sb, Nb and halogen elements for SnO2. The addition amount of the hetero atom is preferably in the range of 0.01 to 30 mol%. It is particularly preferred that the content is 0.1 to 10 mol%.

In the pseudo zoom print, the effective negative area is small and the enlargement ratio at the time of printing is high, so that the print quality deterioration due to dust adhering to the negative is larger than that of normal print. It is preferable that the charge of the negative after the treatment is sufficiently suppressed, since the adhesion of dust is reduced. Therefore, it is preferable that the back layer contains an antistatic agent that does not flow out into the processing solution.

Polymerized antistatic agents, poorly water-soluble inorganic compounds and the like are effective for the above purpose. In addition, the back layer contains fine particles of an inorganic compound such as silicon dioxide, magnesium oxide, titanium dioxide, and calcium carbonate and fine particles of an organic compound such as polymethyl methacrylate, cellulose acetate propionate, and a fluororesin. It is preferable to prevent adhesion between the photosensitive layer and the back layer when stored. Preferred size is 1μ to 1
It is particularly effective to increase the matting agent amount of the back layer, which is 0μ, to the matting agent amount of the photosensitive layer in order to prevent the sharpness deterioration of the pseudo zoom print. Preferably, the ratio of the amount of the matting agent between the back layer and the photosensitive layer is at least 1.2: 1, more preferably at least 2: 1.

Those useful as a permeable support for photographic films include, for example, cellulose esters (particularly cellulose triacetate, cellulose diacetate, cellulose propionate, cellulose acetate propionate,
Cellulose butyrate, cellulose acetate butyrate), polyamide (US Pat. No. 2,856,385),
2,848,439, British Patent No. 542,509)
Polycarbonate (Belgium Patent 593,040-
593,047, British Patent No. 853,587, U.S. Patent No. 3,023,101, West German Patent No. 1,060,
No. 710, 1,062,544, French Patent No. 1,25
No. 9,156) polyester (JP-A-48-40414)
No. 789,317, Japanese Patent Application No. 63-713.
08) (especially polyethylene terephthalate, poly-
A copolymer having an aromatic dicarboxylic acid having 1,4-cyclohexane dimethylene terephthalate, polyethylene 1,2-diphenoxyethane-4,4'-dicarboxylate, polybutylene terephthalate, or polyethylene naphthalate metal sulfonate as a copolymer component. Polymerized polyester,
Copolymerized polyester having an aromatic dicarboxylic acid having a metal sulfonate and an aliphatic dicarboxylic acid as a copolymer component), polystyrene (UK Patent No. 991,702),
Polypropylene (GB Patent 964,780, BP 921,635), polyethylene (French patents 1,2)
64,407), polymethylpentene, polysulfone, polyethersulfone, polyarylate, aromatic polyetherimide, aromatic polyamide, aromatic polyamideimide, polyphenylene oxide (UK Patent No. 1,250,206), polyphenylene Examples include films made of semi-synthetic or synthetic polymers such as sulfide.

A plasticizer may be added to these permeable supports for the purpose of imparting flexibility. In particular, in the case of cellulose esters, plasticizer-containing substances such as triphenyl phosphate, biphenyl phosphate, and dimethylethyl phosphate are usually used. The thickness of the transmission support is 100 μm.
The following cases are preferable for the purpose of the present invention, and 90 μ to 50 μ
Is more preferable, and the case of 80 to 60 is particularly preferable.

The strength of the support was 4 kg / mm ² or more,
Initial elastic modulus 150 kg / mm ² or more, flexural elastic modulus 150 kg /
Those having mm ² or more are preferred.

The molecular weight of these support polymers may be 10,000 or more, but usually 20,000 to 800,000.

When these polymers are used for a transmissive support, all of the transmissive supports have a hydrophobic surface. Therefore, a photographic layer comprising a protective colloid mainly composed of gelatin (for example, photosensitive It is very difficult to firmly bond the non-transparent silver halide emulsion layer, intermediate layer, filter layer, etc.). Prior arts that have attempted to overcome such difficulties include the following. (1) After surface treatment such as chemical treatment, mechanical treatment, corona discharge treatment, flame treatment, ultraviolet treatment, high frequency treatment, glow discharge treatment, active plasma treatment, laser treatment, mixed acid treatment, ozone oxidation treatment, etc. A method of directly applying a photographic emulsion to obtain an adhesive strength. (2) A method in which a photographic emulsion layer is coated on the undercoat layer after the surface treatment or once without the surface treatment. (See, for example, U.S. Pat. No. 2,693,241, 2,
764,520, 2,864,755, 3,46
2,335, 3,475,193, 3,143,4
No. 21, 3,501,301, 3,460,944
No. 3,674,531, British Patent No. 788,365.
No., 804,005, 891,469, Japanese Patent Publication No. 48-431, Japanese Patent Publication No. 51-446, etc.). All of these surface treatments are thought to be due to the formation of polar groups on the originally hydrophobic support surface and the increase in the crosslink density of the surface. It is conceivable that the affinity of the components contained therein with the polar group increases, or the fastness of the adhesive surface increases. Various modifications have been made to the structure of the undercoat layer, and a layer that adheres well to the support (hereinafter abbreviated as the first layer) is provided as the first layer, and the second layer is formed thereon as a second layer. A hydrophilic resin layer that adheres well to the layer
Abbreviated as a layer) and a single-layer method in which only one resin layer containing both a hydrophobic group and a hydrophilic group is applied.

Among the surface activation treatments (1), the corona discharge treatment is the most popular.
No. 5043, JP-B-47-51905, JP-A-47-47
28067, JP-A-49-83767, JP-A-51
No. 41770, JP-A-51-131576, and the like. Discharge frequency is 50
Hz to 5000 KHz, preferably 5 KHz to several hundred KHz is appropriate. If the discharge frequency is too low, stable discharge cannot be obtained and pinholes are formed on the object to be processed, which is not preferable.
On the other hand, if the frequency is too high, a special device for impedance matching is required, which increases the cost of the device, which is not preferable. Regarding the processing strength of the object to be treated, 0.001 KVA min / m ^{2 to} 5 KV is used for improving the wettability of a general plastic film such as polyester and polyolefin.
A min / m ² , preferably 0.01 KVA / m ^{2 to 1} KVA /
m ² is appropriate. The gap clearance between the electrode and the dielectric roll is 0.5 mm to 2.5 mm, preferably 1.0 mm to
2.0 mm is appropriate.

Glow discharge treatment, which is often the most effective surface treatment, is performed by any of the conventionally known methods,
For example, Japanese Patent Publication No. 35-7578, 36-10336
Nos. 45-22004, 45-22005, 45-24040, 46-43480, U.S. Pat. Nos. 3,057,792, 3,057,795, and 3,179,482 No. 3,288,638, 3,
Nos. 309,299, 3,424,735, 3,
462,335, 3,475,307, 3,7
61,299, British Patent 997,093, JP-A-5
No. 3,129,262 can be used.

The glow discharge processing conditions are generally such that the pressure is 0.
005 to 20 Torr, preferably 0.02 to 2 Torr
r is appropriate. If the pressure is too low, the surface treatment effect will be reduced, and if the pressure is too high, an excessive current will flow, sparks are likely to occur, it is dangerous, and there is a risk of destroying the workpiece. The discharge is generated by applying a high voltage between metal plates or metal rods arranged at one or more spaces in a vacuum tank. This voltage depends on the composition of the atmosphere gas,
Although various values can be taken depending on the pressure, a stable steady-state glow discharge generally occurs in the range of 500 to 5000 V within the above-mentioned pressure range. A particularly suitable voltage range for improving the adhesion is from 2000 to 4000V. Also, as seen in the prior art, the discharge frequency is appropriately from DC to several thousand MHz, preferably 50 MHz to 20 KHz. For the discharge treatment intensity, 0.01KVA min / m ² ～5KVA fraction from the desired adhesive performance is obtained / m ²
Preferably, 0.15 KVA min / m ^{2 to 1} KVA min / m ² is suitable.

Next, the undercoating method (2) is well studied, and all of these methods have been well studied. In the undercoating first layer in the multilayer method, for example, vinyl chloride, vinylidene chloride, butadiene, methacrylic acid, acrylic acid, A number of polymers, including copolymers starting from monomers selected from itaconic acid and maleic anhydride, as well as polyethyleneimine, epoxy resins, grafted gelatin, and nitrocellulose, are coated with a second undercoat layer. Then, the properties of gelatin have been mainly studied.

In the single-layer method, in many cases, good adhesion is achieved by utilizing interfacial mixing between the support and the undercoat polymer, and is often used for a cellulose derivative support. There is little effect of surface treatment on cellulose derivatives. A single layer of gelatin solution dispersed in a methylene chloride / ketone / alcohol mixed organic solvent is applied, and swelling of the support and interfacial mixing utilizing the diffusion of gelatin are used. The most commonly used method is to provide an undercoat layer.

Examples of gelatin hardeners include chromium salts (chromium alum, etc.), aldehydes (formaldehyde, glutaraldehyde, etc.), isocyanates, active halogen compounds (2,4-dichloro-6-hydroxy-S-triazine, etc.), Epichlorohydrin resin and the like can be mentioned.

[0070] These undercoating liquids may contain various additives as necessary. For example, surfactants, antistatic agents, antihalation agents, coloring dyes, pigments,
Coating aids, antifoggants and the like. When the undercoat liquid of the present invention is used, an etchant such as resorcinol, chloral hydrate, chlorophenol and the like can be contained in the undercoat liquid.

In the underlayer, inorganic fine particles such as SiO ₂ and TiO ₂ or polymethyl methacrylate copolymer fine particles (1 to 10 μm) can be contained as a matting agent.

(Coating Method) The undercoating liquid is applied by a well-known coating method such as dip coating, air knife coating, curtain coating, roller coating, wire bar coating, gravure coating, or US Pat. It can be applied by an extrusion coating method using a hopper described in 2,681,294. Optionally, US Pat. No. 2,761,791,
No. 3,508,947, No. 2,941,898 and No. 3,526,528, two layers by a method described in Yuji Harazaki, “Coating Engineering”, p. 253 (published by Asakura Shoten in 1973). The above layers can be applied simultaneously.

The photographic film may be provided with at least one of a blue-sensitive layer, a green-sensitive layer and a red-sensitive layer on a transmission support. There is no particular limitation on the number and order of the emulsion layers and the non-photosensitive layers. A typical example is a silver halide photographic material having at least one photosensitive layer comprising a plurality of silver halide emulsion layers having substantially the same color sensitivity but different sensitivities on a transmission support. The light-sensitive layer is a unit light-sensitive layer having color sensitivity to any of blue light, green light, and red light, and in a multilayer silver halide color photographic light-sensitive material, generally, The arrangement is such that a red-sensitive layer, a green-sensitive layer, and a blue-sensitive layer are arranged in this order from the support side. However, even if the above installation order is reversed according to the purpose,
Also, the order of installation may be such that different color-sensitive layers are sandwiched between the same color-sensitive layers.

Non-light-sensitive layers such as various intermediate layers may be provided between the silver halide light-sensitive layers and as the uppermost layer and the lowermost layer. As the intermediate layer, JP-A-61-43748,
The couplers and DIR compounds described in JP-A-59-113438, JP-A-59-113440, JP-A-61-20037, and JP-A-61-20038 may be contained, and color mixing is performed as usually used. An inhibitor may be included.

As described in West German Patent No. 1,121,470 or British Patent No. 923,045, a plurality of silver halide emulsion layers constituting each unit photosensitive layer are composed of a high-sensitivity emulsion layer and a low-sensitivity emulsion layer. A two-layer constitution of an emulsion layer can be preferably used. In general, it is preferable to arrange the light-sensitive layers in such a manner that the light-sensitivity decreases toward the transmission support, and a non-light-sensitive layer may be provided between the respective halogen emulsion layers.
JP-A-57-112751 and JP-A-62-2003
No. 50, No. 62-206541, No. 62-20654
As described in No. 3, etc., a low-sensitivity emulsion layer may be provided on the side remote from the transmission support, and a high-sensitivity emulsion layer may be provided on the side near the transmission support.

As a specific example, a low-sensitivity blue-sensitive layer (BL) / a high-sensitivity blue-sensitive layer (B
H) / high-sensitivity green photosensitive layer (GH) / low-sensitivity green photosensitive layer (GL) / high-sensitivity red photosensitive layer (RH) / low-sensitivity red photosensitive layer (RL) /, or BH / BL / GL / GH / R
H / RL, or BH / BL / GH / GL / RL /
They can be installed in the order of RH.

As described in JP-B-55-34932, the layers may be arranged in the order of blue-sensitive layer / GH / RH / GL / RL from the side farthest from the transparent support. JP-A-56-25738 and JP-A-62-63.
No. 936, the blue-sensitive layer / GL / RL / GH / RH from the farthest side from the transmission support.
Can be arranged in this order.

As described in JP-B-49-15495, the upper layer is the silver halide emulsion layer having the highest sensitivity, the middle layer is the silver halide emulsion layer having a lower sensitivity, and the lower layer is the middle layer. In addition, an arrangement is also possible in which a silver halide emulsion layer having a lower sensitivity is further disposed, and an arrangement is formed of three layers having different sensitivities in which the sensitivities are successively decreased toward the transmission support. Even in the case of such three layers having different sensitivities, as described in JP-A-59-202264, the medium sensitivity from the side farther from the transmission support in the same color-sensitive layer. It may be arranged in the order of emulsion layer / high-speed emulsion layer / low-speed emulsion layer.

As described above, various layer configurations and arrangements can be selected according to the purpose of each photosensitive material.

A preferred silver halide contained in the photographic emulsion layer of the photographic film is silver iodobromide, silver iodochloride, or silver iodochlorobromide containing about 30 mol% or less of silver iodide. Particularly preferred is from about 2 mol% to about 25 mol%
Silver iodobromide or silver iodochlorobromide containing up to silver iodide.

The silver halide grains in the photographic emulsion include those having regular crystals such as cubic, octahedral and tetradecahedral, those having irregular crystals such as spherical and plate-like,
It may have a crystal defect such as a twin plane or a composite form thereof.

The grain size of the silver halide may be fine grains of about 0.2 μm or less or large grains having a projected area diameter of about 0 μm, and may be a polydisperse emulsion or a monodisperse emulsion.

The silver halide photographic emulsion is described in, for example, Research Disclosure (RD) No. 17643 (197).
December, 8), pages 22 to 23, "I. Emulsion production (Emulsi
on preparation and types) ”and No. 1871
6 (November 1979), p. 648, Grafkid, "Physics and Chemistry of Photography", published by Paul Montell (P. Glafkide)
s, Chemic et Pjisique Photographique, Pail Montel,
1967), "Photographic Emulsion Chemistry" by Duffin, GF Duffin, (Focal Press, 196
6)): "Manufacture and coating of photographic emulsions" by Zerikman et al., Published by Focal Press (VL Zelikman et al., Making a
nd Coarting Photographic Emulsion, FicalPress19
64) and the like.

US Pat. Nos. 3,574,628;
655,394 and British Patent 1,413,748.
Monodisperse emulsions described in Nos. 1 and 2 are also preferred.

Also, tabular grains having an aspect ratio of about 5 or more can be used. Tabular grains, by Gatov,
Gutoff, Photographic science and Engineerin
g), Vol. 14, pp. 248-257 (1970); U.S. Patent Nos. 4,434,226 and 4,414,310.
Nos. 4,433,048 and 4,439,520 and British Patent No. 2,112,157.

The crystal structure may be uniform, the inside and the outside may have different halogen compositions, or may have a layered structure. In addition, silver halides having different compositions are joined by epitaxial junction. May be
Further, it may be bonded to a compound other than silver halide such as, for example, silver rhodan or lead oxide. Also, a mixture of particles having various crystal forms may be used.

As the silver halide emulsion, usually, those subjected to physical ripening, chemical ripening and spectral sensitization are used. Additives used in such a process are described in Research Disclosure Nos. 17643 and 18716, and the relevant portions are summarized in the table below.

Known photographic additives which can be used in the present invention are also described in the above two Research Disclosures, and the relevant portions are shown in the following table. Additive type RD7643 RD18716 1 Chemical sensitizer page 23, page 648, right column 2 Sensitivity enhancer Same as above 3 Spectral sensitizer, pages 23 to 24, page 648 right column Supersensitizer 649, right column 4 Brightener 24 5 Antifoggant 24 to 25 page 649 right column and stabilizer 6 Light absorber, 25 to 26 page 649 right column to filter dye, 650 left column UV absorber 7 Stain inhibitor 25 page right column 650 left To right column 8 dye image stabilizer page 25 9 hardener 26 page 651 left column 10 binder 26 same as above 11 plasticizer, lubricant 27 page 650 right column 12 coating aid, pages 26 to 27 650 page right column Surfactant 13 Antistatic agent Page 27 Same as above

Further, in order to prevent deterioration of photographic performance due to formaldehyde gas, US Pat.
It is preferable to add a compound which can react with the formaldehyde gas described in JP-A No. 7 or 4,435,503 and can be fixed to the photosensitive material.

Various color couplers can be used in the photosensitive layer, and specific examples thereof are described in the patents described in the above-mentioned Research Disclosure (RD) No. 17643, VII-CG. I have.

As the yellow coupler, for example, US Pat. Nos. 3,933,501 and 4,022,620
No. 4,326,024 and 4,401,75
No. 2, No. 4,248,961, Japanese Patent Publication No. 58-107
No. 39, British Patent Nos. 1,425,020 and 1,4
No. 76,760; U.S. Pat. Nos. 3,973,968; 4,314,023; 4,511,649;
Those described in EP 249,473A and the like are preferred.

As magenta couplers, 5-pyrazolone-based and pyrazoloazole-based compounds are preferred, and US Pat. Nos. 4,310,619 and 4,351,897,
European Patent No. 73,636, US Patent No. 3,061,4
No. 32, No. 3,725,064, Research Disclosure No. 24220 (June 1984), JP-A-60-33552, Research Disclosure
No. 24230 (June 1984), JP-A-60-43
No. 659, No. 61-72238, No. 60-35730
No. 55-118034, No. 60-185951
Nos. 4,500,630 and 4,54.
No. 0,654, No. 4,556,630, WO (PC
T) 88/47995 and the like are particularly preferred.

Examples of the cyan coupler include phenol type and naphthol type couplers.
No. 052,212, No. 4,146,396, No. 4,228,233, No. 4,296,200, No. 2,369,929, No. 2,801,171,
No. 2,772,162, No. 2,895,826
No. 3,772,002, No. 3,758,308
No. 4,334,011, No. 4,327,17
3, West German Patent Publication No. 3,329,729, European Patent Nos. 121,365A and 249,453A, U.S. Patent Nos. 3,446,622 and 4,333,999.
No. 4,753,871, No. 4,451,55
No. 9, No. 4,427,767, No. 4,690, 8
No. 89, No. 4,254,212, No. 4,296,
199 and JP-A-61-42658 are preferred.

A colored coupler for correcting unnecessary absorption of a coloring dye is described in Research Disclosure No.
No. 17643, section VII-G, U.S. Pat. No. 4,163,67
0, JP-B-57-39413, U.S. Pat.
Nos. 4,929, 4,138,258 and British Patent 1,146,368 are preferred.

Examples of couplers in which a coloring dye has an appropriate diffusibility include US Pat. No. 4,366,237, British Patent No. 2,125,570, and European Patent No. 96,570.
Those described in West German Patent (Published) No. 3,234,533 are preferred.

Typical examples of polymerized dye-forming couplers are described in US Pat. Nos. 3,451,820 and 4,082.
No. 0,211, No. 4,367,282, No. 4,4
Nos. 09,320 and 4,576,910 and British Patent 2,102,173.

Examples of couplers which release a nucleating agent or a current color accelerator in the form of an image during development are described in GB 2,092.
7,140,2,131,188, JP-A-59
Preferred are those described in JP-A-157638 and JP-A-59-170840.

Other couplers that can be used in the light-sensitive material of the present invention include US Pat. No. 4,130,42.
No. 7,283, etc .; U.S. Pat.
No. 472, No. 4,338,393, No. 4,310,
No. 618, etc .;
No. 5950, Japanese Patent Application Laid-Open No. 62-24252, and the like.
R. redox compound-releasing couplers, DIR coupler-releasing couplers, DIR coupler-releasing redox compounds or DIR redox-releasing redox compounds, couplers that release dyes that recolor after release as described in EP 173,302A; D. 11449, 24241, bleaching accelerator releasing couplers described in JP-A-61-201247, ligand releasing couplers described in U.S. Pat. No. 4,553,477, and leuco described in JP-A-63-75747. And couplers that release dyes.

The coupler can be introduced into the light-sensitive material by various known dispersion methods. For example, an example of a high boiling point solvent used in the oil-in-water dispersion method is disclosed in US Pat. No. 2,322,02.
No. 7, etc.

[0100]

The present invention will be further described below with reference to examples. Example 1 1) Preparation of Color Negative Film A 90 μm-thick cellulose triacetate film with an undercoat on both sides was coated on one side of a support with a back layer having the following composition, and on the other side, the following composition Coating the photosensitive layer of
A color negative film A was prepared.

(Composition of Back Layer) The number corresponding to each component indicates the coating amount in g / m 2. Sixteenth layer (first back layer) Gelatin 4.20 EX-14 2.40 Seventeenth layer (second back layer) Gelatin 0.80 Eighteenth layer (third back layer) Gelatin 1.79 polymethyl acrylate particles ( 0.30) In addition to the above components, a gelatin hardener and a surfactant were added to each layer. (Film thickness 8μ)

(Composition of photosensitive layer) The number corresponding to each component is as follows:
The coating amount is expressed in units of g / m ² , and for silver halide, the coating amount is expressed in terms of silver. However, as for the sensitizing dye, the coating amount is shown in mol unit with respect to 1 mol of silver halide in the same layer. First layer (antihalation layer) Black colloidal silver silver 0.18 gelatin 1.40 Second layer (intermediate layer) 2,5-di-t-pentadecyl hydroquinone 0.18 EX-1 0.07 EX-30 02 EX-12 0.002 U-1 0.06 U-2 0.08 U-3 0.10 HBS-1 0.10 HBS-2 0.02 Gelatin 1.04 Third layer (first red-sensitive emulsion Layer) Emulsion A silver 0.25 Emulsion B silver 0.25 Sensitizing dye I 6.9 × 10 ^-5 Sensitizing dye II 1.8 × 10 ^-5 Sensitizing dye III 3.1 × 10 ^-4 EX-2 0.335 EX-10 0.020 U-1 0.07 U-2 0.05 U-3 0.07 HBS-1 0.060 Gelatin 0.87 Fourth layer (second red-sensitive emulsion layer) Emulsion G Silver 1.0 Sensitizing dye I 5.1 × 10 ^-5 Sensitizing dye II 1.4 × 10 ^-5 Sensitizing dye III 2.3 × 10 ^-5 EX-2 0.400 EX-3 0.050 EX-10 0.015 U-1 0.07 U-2 0.05 U-3 0.07 Gelatin 1.30 Fifth layer (third red Emulsion layer) Emulsion D Silver 1.60 Sensitizing dye I 5.4 × 10 ⁻⁵ Sensitizing dye II 1.4 × 10 ⁻⁵ Sensitizing dye III 2.4 × 10 ⁻⁴ EX-3 0.010 EX− 4 0.080 EX-2 0.097 HBS-1 0.22 HBS-2 1.10 Gelatin 1.63 6th layer (intermediate layer) EX-5 0.040 HBS-1 0.020 Gelatin 0.80 7 layers (first green-sensitive emulsion layer) Emulsion A silver 0.15 Emulsion B silver 0.15 sensitizing dye V 3.0 × 10 ^-5 sensitizing dye VI 1.0 × 10 ^-4 sensitizing dye VII 8 × 10 ^-4 EX-6 0.260 EX-1 0.021 EX-7 0.030 EX-8 0.025 HBS-1 0.100 HBS -3 0.010 Gelatin 0.63 8th layer (second green-sensitive emulsion layer) Emulsion C silver 0.45 sensitizing dye V 2.1 × 10 ^-5 sensitizing dye VI 7.0 × 10 ^-5 sensitizing Dye VII 2.6 × 10 ^-4 EX-6 0.094 EX-8 0.018 EX-7 0.026 HBS-1 0.160 HBS-3 0.008 Gelatin 0.50 Ninth layer (third green Sensitive emulsion layer) Emulsion E silver 1.2 Sensitizing dye V 3.5 × 10 ^-5 Sensitizing dye VI 8.0 × 10 ^-5 Sensitizing dye VII 3.0 × 10 ^-4 EX-13 0.015 EX -11 0.100 EX-1 0.025 HBS-1 0.25 HBS-2 0.10 Gelatin 1.54 10th layer (yellow filter layer) Yellow colloidal silver Silver 0.05 EX-5 0.08 HBS- 1 0.03 Gelatin 0.95 Eleventh layer (first blue-sensitive emulsion layer) Emulsion A silver 0.08 Emulsion B silver 0.0 07 Emulsion F silver 0.07 sensitizing dye VIII 3.5 × 10 ^-4 EX-9 0.721 EX-8 0.042 HBS-1 0.28 gelatin 1.10 12th layer (2nd blue-sensitive emulsion layer) Emulsion G Silver 0.45 Sensitizing dye VIII 2.1 × 10 ^-4 EX-9 0.154 EX-10 0.007 HBS-1 0.05 Gelatin 0.78 13th layer (3rd blue-sensitive emulsion layer) Emulsion H silver 0.77 Sensitizing dye VIII 2.2 × 10 ^-4 EX-9 0.20 HBS-1 0.07 gelatin 0.69 14th layer (first protective layer) Emulsion I silver 0.20 U -4 0.11 U-5 0.17 HBS-1 0.05 Gelatin 1.00 Fifteenth layer (second protective layer) Polymethyl acrylate particles (about 1.5 μm in diameter) 0.54 S-1 0.20 Gelatin 1.20

In each layer, in addition to the above components, a gelatin hardener H-1 and a surfactant were added. (Film thickness 21μ)

[0104]

[Table 1]

[0105]

Embedded image

[0106]

Embedded image

[0107]

Embedded image

[0108]

Embedded image

[0109]

Embedded image

[0110]

Embedded image

[0111]

Embedded image

[0112]

Embedded image

[0113]

Embedded image

[0114]

Embedded image

[0115]

Embedded image

[0116]

Embedded image

[0117]

Embedded image

[0118]

Embedded image

[0119]

Embedded image

[0120]

Embedded image

[0121]

Embedded image

[0122]

Embedded image

[0123]

Embedded image

[0124]

Embedded image

[0125]

Embedded image

[0126]

Embedded image

[0127]

Embedded image

[0128]

Embedded image

[0129]

Embedded image

[0130]

Embedded image

[0131]

Embedded image

[0132]

Embedded image

[0133]

Embedded image

[0134]

Embedded image

[0135]

Embedded image

A color negative film B was prepared by uniformly changing the coating amount of each layer so that the total film thickness of the back layer in the color negative film A was 8/3 μm. Further, the above-mentioned photosensitive layer was coated on a 90 μm-thick cellulose triacetate film support having an undercoat on one side to prepare a color negative film C without a back layer. The thickness of the back layer of each of the color negative films A to C is shown in Table 2 below.

[0137]

Table 2 Color Negative Film Thickness of Back Layer A 8μ B 2.7μ C 0

2) Processing of Color Negative Film The color negative films A, B, and C were cut into 135 format roll films, and rolled into the cartridges shown in FIGS. 1 and 6, respectively, to prepare six types of photographic film cartridges. Table 3 shows the combinations of color negative films and cartridges used in these six types of photographic film cartridges.

[0139]

Table 3 Photographing Material Color Negative Film Cartridge 101 Present Invention A FIG. 6 102 〃B FIG. 6 103 Comparison C FIG. 6 104 〃A FIG. 1 105 ＢB FIG.

3) Modification of Camera A camera in which a non-prewind system was modified and a film loading chamber was modified so that the cartridge shown in FIG. 5-2 could be loaded, and a normal camera in which a non-prewind system was used were prepared. (Fuji Zoom Cardia 800)

4) Photographing Two frames were photographed, and the photograph of the second frame was used for evaluation. The photographing conditions are shown below. (I) Two consecutive frames immediately after the previous shooting. (II) One frame after 24 hours in an atmosphere of 25% 70% after the previous shooting, and two frames after 15 minutes in an atmosphere of 25% 70%. Eyes shot. The photographs were taken under a constant artificial light source set at a dark cloudy brightness. The person was photographed at a distance of 3 m.

5) Development The negative was developed by CN-16 treatment.

6) Print A normal L size print and an L size print trimmed so that the effective negative area becomes 1/4 were photographed, and the sharpness of the image was evaluated.

[0144]

[Normal print] Imaging conditions Imaging material Sharpness * (I) 101 (invention) 1 102 (〃) 1 103 (comparison) 1 104 (〃) 1 105 (〃) 1 １０６ 106 (〃) 1 (II) 101 (the present invention) 1 １０２ 102 (〃) 2 １０３ 103 (comparison) 5 １０４ 104 (〃) 3 １０５ 105 (〃) 4 １０６ 106 (〃) 6 (* visual evaluation) And ranked the sharpness.)

[0145]

Table 5 [Pseudo-zoom (2x) print] Imaging conditions Imaging material Sharpness * (I) 101 (invention) 1 102 (〃) 1 103 (comparison) 1 104 (〃) 1 105 (〃) 1 １０６ 106 (〃) 1 (II) 101 (present invention) 2 〃 102 (〃) 3 比 103 (comparison) 6 １０４ 104 (〃) 4 １０５ 105 (〃) 5 〃 106 (〃) 7 (* The sharpness was ranked by visual evaluation.)

The sharpness difference in the photographing condition (II) was more clearly recognized in the pseudo zoom print. Table 4,
The results in Table 5 are summarized below.

(1) Under the photographing condition (I), the effect of the back layer and the difference between the cartridges were not recognized. (2) Under the photographing condition (II), the effects of the back layer and the cartridge were observed, and it was found that the combination of the back layer and the cartridge of the present invention provided excellent sharpness. (3) It was found that a photographic material having a higher back layer / photosensitive layer ratio had better sharpness. (Shooting conditions (II), 1
01VS102, 104VS105). Ordinary users rarely shoot one film at a time.
Therefore, the photographic material 10 that promises a print with high sharpness
1, 102 are very useful.

Example 2 Photographic materials 101 to 106 except that the composition of the support was changed from cellulose triacetate to polyethylene terephthalate having an average molecular weight of 40,000 and a thickness of 80 μm.
Photographic materials 201/206 were prepared in exactly the same manner as the above. These photographic materials were compared exactly as in Example 1.

When polyethylene terephthalate is used, the photographic material 20 of the present invention can be used under the photographic conditions (II).
The sharpness of the prints obtained from 1,202 was excellent.

Example 3 Photographic materials 301 to 304 were prepared in the same manner as in Example 2 except that the thickness of polyethylene terephthalate was changed to 90 μm and 120 μm.
It was created. These photographic materials were photographed under the photographing conditions (II) in Example 1, pseudo zoom prints were prepared, and the sharpness was evaluated.

[0151]

[Table 6] Photographing material Base thickness Back layer Cartridge Sharpness * 301 (invention) 90μ Yes Fig. 6 1302 (comparison) 〃 No Fig. 6 3 303 (Invention) 120μ Yes Fig. 6 1 304 (comparison) 〃 None Fig. 6 2 (* Sharpness was ranked by visual evaluation.)

It has been found that the effect of the present invention is remarkably recognized when the thickness of the base is small. This result was obtained by combining the cartridge with the back layer of the present invention.
This indicates that the thickness of the base can be reduced even when performing pseudo zoom printing, and that the cartridge can be miniaturized, which indicates the significance of the present invention.

Example 4 The composition of the support in Example 1 was changed from polyethylene terephthalate to modified polyethylene terephthalate having an average molecular weight of 10,000 (molar ratio: ethylene glycol: terephthalic acid: adipic acid: ridium sulfonated isophthalate). Acid = 1: 1: 0.08: 0.0
6) and a polycarbonate having an average molecular weight of 40,000 were subjected to the same test as in Example 1. As a result, the same effect was obtained.

[0154]

According to the present invention, a photosensitive layer having a total thickness of 30 μm or less is formed on one side of a transparent support, and a film having a total thickness of 20 % to 70 % of the total thickness of the photosensitive layer is formed on the other side. Having a thickness,
Since the back layer containing the hydrophilic polymer is formed, it is possible to prevent the curl of the photographic film from becoming large particularly under the influence of humidity and to secure good flatness, so that a print with excellent sharpness can be obtained. . The photographic film cartridge of the present invention is particularly suitable for a pseudo zoom print system. Further, curling of the photographic film is suppressed, so that the film can be taken in and out of the cartridge and the film can be fed in the camera reliably and easily.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a photographic film cartridge of 135 format is loaded in a camera.

FIG. 2 is a perspective view of a photographic film cartridge in which a cartridge body has a square shape.

FIG. 3 is a perspective view of a photographic film cartridge provided with a protrusion on an end surface of a cartridge body.

FIG. 4 is a perspective view of a photographic film cartridge in which a projection is formed on a body of a cartridge body.

FIG. 5 is a sectional view of a cartridge loading chamber showing a state where a photographic film cartridge is loaded in a camera.

FIG. 6 is an explanatory diagram showing a state where a photographic film cartridge is loaded into a camera.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cartridge 1a Cartridge main body 2 Photographic film 3 Film outlet 4 Spool shaft

Claims (1)

(57) [Claims] 1. A photographic film comprising a photographic film and a cartridge for storing the photographic film.
In a photographic film cartridge comprising a spool shaft for winding a photographic film in a roll shape, and a cartridge body having a film outlet for taking in and out the photographic film and housing the spool shaft rotatably around an axis, , A total thickness of 30 on one side of the permeable support
μm The following photosensitive layer formation, leaving one side more than 20% of the total thickness of the photosensitive layer has a thickness of 70% or less, the back layer is formed containing a hydrophilic polymer, wherein the cartridge
The photographic film by rotating the spool shaft.
A photographic film cartridge fed out from a film outlet .