JPS61251843A - Direct reversal silver halide photographic sensitive material - Google Patents

Abstract

PURPOSE:To obtain a direct reversal photographic sensitive material for a daylight room having no photosensitivity to light in the visible region but showing high sensitivity and high contrast to ultraviolet light by incorporating a dye lowering the sensitivity of an emulsion layer into only a hydrophilic colloidal layer. CONSTITUTION:A silver halide emulsion layer contg. silver halide particles and a nonphotosensitive, hydrophilic colloidal layer are successively formed, and a dye enough to deprive the emulsion layer of its photosensitivity to visible light is incorporated into only the hydrophilic colloidal layer. The amount of the dye used is the amount required to deprive the silver halide emulsion of its photosensitivity to safelight, and the especially preferred amount is 10<13>-0.5g/m<2>. When ultraviolet rays are used for exposure and an incandescent electric lamp provided with a filter shielding ultraviolet rays is used to emit safelight, a dye having lambdamax in the range of 390-550nm is preferably used. The dye includes a compound represented by formula I, preferably a compound having acidic groups such as sulfone or carboxyl groups, e.g., a compound represented by formula II.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a direct reversal silver halide photographic light-sensitive material, and particularly to a material that can be handled under visible light (mainly visible light of 10 nm or more). This invention relates to a direct reversal silver halide photographic light-sensitive material.

(Prior art) Direct reversal silver halide photographic light-sensitive materials are used for copying various photographs, but in the 3-photo plate making process, the original halftone image is converted from the positive l to the so-called "turning" process. The father is often used to print positive images from Nekataka to Nekako.

The photographic material used in this turning process is required to have the ability to be handled under safelight. Conventional.

Various photographic materials are known that can be handled under ortho and/or monochromatic safelights, but they have drawbacks such as poor workability and high plate-making costs under safelights of unusual wavelengths. Therefore, in recent years, photographic materials that can be used even under visible light safelights (mainly safelights that emit light with a wavelength of ≠JOnm or more) have been developed (hereinafter referred to as bright room photographic materials).

Water-soluble dyes that can be removed during processing are often used in silver halide photographic materials for various purposes such as imparting safelight properties, especially in the dense layer printing process of the photolithography process ( Attempts have been made to add dyes to the emulsion in order to enable the so-called flipping step to be carried out under bright safelight. However, in a direct reversal emulsion, when this L-like dye is added to the emulsion layer, it often affects the reversal characteristics, such as a decrease in the high density, a softening of the contrast, and the minimum density of the reversal not becoming smaller than the light component. In many cases, the sharpness (sharpness) of lines and halftone dots I was degraded. In addition, when this artificial dye is added to the emulsion layer, it is possible to adjust the character line width in the turning process and the tone of the halftone image (specifically, to make the character line width slightly thicker than the original image, or to make the character line width slightly thicker than the original image). Joint points also refer to the ability to slightly expand the area.In the turning process, in addition to the ability to reproduce the same line width or halftone dot area as the original image, this ability is also used when creating artistic expressions. (This requires the ability to make corrections to the original image.)

Furthermore, the reversal characteristics of direct reversal emulsions are such that silver chlorobromide and silver bromide are preferable to silver chloride, and as a result, the photosensitive region extends to the long wavelength side, so when used under bright safelight,
It is necessary to combine two or more types of dyes that absorb long waves and dyes that absorb short waves, or to use large amounts of dyes, which often causes the above-mentioned image quality deterioration.

Therefore, in direct reversal emulsions, there has been a strong desire for a method of imparting safelight properties without deteriorating image quality.

(Objectives of the Invention) The objects (1) and (t) of the present invention are to provide a direct reversal photosensitive material for bright room use that is not sensitive to light in the visible light range, has high sensitivity to ultraviolet light, and has high contrast. It is.

The second purpose of Honjutsu is to create a direct reversal effect for bright rooms that allows you to change the line width and halftone dot area by adjusting the exposure amount even when printing with a light source rich in ultraviolet light, and provides a sharp finish without fringes. It is to provide materials.

(Structure of the Invention) A feature of the present invention is to have a silver halide emulsion consisting of silver halide grains and a non-photosensitive hydrophilic colloid layer on top of the silver halide emulsion, thereby losing the photosensitivity of the emulsion layer to visible light. This was achieved by possessing substantially only the pre-kR aqueous colloid layer with enough of the dye to bind.

In the present invention, a non-photosensitive hydrophilic colloid layer is provided above the silver halide emulsion layer, that is, far from the emulsion @X when viewed from the support, and the dye is applied substantially only to this non-photosensitive hydrophilic colloid layer. Make it government owned.

The non-WIcJjt hydrophilic colloid layer rich in dye may be provided directly in contact with the silver halide emulsion layer, or may be provided on the silver halide emulsion layer via an intermediate layer. . Further, another non-photosensitive hydrophilic colloid layer may be further provided on the non-photosensitive hydrophilic colloid layer containing this dye.

The dye used in the present invention is an oxonol dye.

Although hemioxonol dyes, merocyanine dyes, cyanine dyes, azo dyes, etc. can be used, water-bathable dyes are useful in order to eliminate residual color after treatment.

Specifically, the list includes the pyrazolone oxonol dyes described in U.S. Pat. ,4423. -207 rod.

The styryl dyes and butadienyl dyes described in U.S. Pat. 27. The merocyanine dyes described in U.S. Pat. yi
merocyanine dyes and oxonol dyes described in r*≠72, U.S. Patent No. 3. 76°447 and British Patent No. srt, to
No. 1,177, Sankota No. 1, Tokukai Akihiro 1! -4!
/No.30, same≠Tatatatko No.O, Mukahirotar l14/-
≠20, U.S. Patent No. 2. jJJ, Hiroshi No. 72, No. 3,
7≠j.

/J'7 % 3rd. /77.071, same No. 3゜kohiro 7. /No. 27, No. 3. ! No. 170, 107.

Same No. J, 17! , No. 7044, No. J, 613
, No. 05, is used.

In the present invention, a dye is used that has absorption characteristics that are large in absorption in the safelight wavelength range used and in the exposure wavelength range. The amount used is /i! for safelight of Haroken Fflt emulsion. cyt, in an amount sufficient to cause loss of sex 1 Usually 10 l/m2 to 19/m
2, especially tO, 9/m2 to 0. ! A range of fi/m2 is preferred. In cases where ultraviolet rays are used for exposure and a white light with a safe light equipped with a filter that blocks ultraviolet rays is used, the dye should have a λmax of 3 Onm or more and a flF of 3 Onm.
Those in the range of m to j j OHm are preferred. Examples of such dyes include compounds of the following general formulas (a), (b)% (c), ni), (e), and (f).

General formula←) General formula (c) In the general formula) [In the formula, Z represents a group of nonmetallic atoms necessary to form a heterocyclic nucleus of benzthiazole, naphthothiazole, or benzoxazole.

Qa represents an atomic group necessary to form pyrazolone, barbyl #, thiobarbylic acid, inoxacilone, 3-oxythionaphthene or/, J-indandio/. R is a substituted or unsubstituted alkyl group, R + R
2t Ra and R4 are a hydrogen atom, an alkoxy group, a dialkylamino group, or a sulfone group R5 is a hydrogen atom or a halogen atom.

M is a hydrogen atom, sodium atom or potassium atom, X
represents an anion, and m, 11 and R3 represent l or co. However, when m is l, a molecular FP3 salt is formed. ] To the general formula) To the general formula (To) [In the formula, Y is an alkyl group, ° or a carboxyl group R6w
R71R89R111R1 (IIRII eR12e
R13tR14, R15, R16 and R17 represent a hydrogen atom, an alkyl group, a hydroxyl group, an amino group, an acylamino carboxyl group or a sulfone group. However, R□2 and R13 may be combined with each other to form a benzene ring. ] Among the dyes of general formulas (a) to (f), acidic group (sulfone group, carboxyl group 1, etc.) dyes are preferred.

The specific sequence is shown below.

S O3N a O3K O3H 03H 5o3K 5 (10 to J3 A non-photosensitive hydrophilic colloid layer is formed by dissolving in a solvent (water, alcohol (e.g., methanol, ethanol, chloropropanol, etc.), acetone, methylceronelube, etc., or a mixed solvent thereof). It is added to the coating solution.

These dyes can also be used in combination of more than one type.

In order to substantially enrich the dye in the non-photosensitive hydrophilic colloid in the present invention, it is preferable to prevent the dye from diffusing from the non-photosensitive hydrophilic colloid layer to the emulsion layer. A method can be used in which a silver halide emulsion is coated and completely set, and then a non-photosensitive hydrophilic colloid layer containing a non-diffusible dye is formed on the emulsion layer.

In addition, in the case where the emulsion layer and the non-photosensitive hydrophilic colloid layer are coated simultaneously using the multi-layer simultaneous coating method, a non-diffusible dye or a polymer mordant may be added to the non-photosensitive hydrophilic colloid layer along with the dye. is most preferred.

Polymer mordants that can be used in the present invention include polymers with secondary and tertiary amino groups, polymers with nitrogen-containing heterocyclic moieties, polymers rich in these Q-class cation groups, and have a molecular weight of J, 000 to 200,000. %/0.000~10.

000.

For example, U.S. Pat. /≠r, o6i issue, same J,
Vinylpyridine polymers and vinylpyridinium cationic polymers disclosed in 7j'A, r/≠, etc.; US Pat. No. 3,1.2! , tri≠, direction 3. try
, ori No. 6, S≠, lλl.

A polymer mordant capable of crosslinking with seratin, etc., disclosed in No. jJt, British Patent No. 277, Reference No. 3, etc.;
US% total 3. Ri SR, Tata J, 2.72/, 1!
J2%, λ, No. 791,043.

JP-A No. 5 μm 111221, from Mukai-l! ! λri issue, 1WIj! -Aqueous sol-type mordant disclosed in t2AOλ7, etc.; US Pat. No. 3. A water-insoluble mordant disclosed in Ort.
dl! , No. 27 c%Kaishoj4'-/J7JJJ No.) A reactive mordant capable of forming a covalent bond with the dye disclosed in the specification, etc.; a US patent in history! , No. 709,490%fFI
J3,711.1! J-1j, same No. J, 44LL2
, No. 4112, No. 3. Grr, 'yog issue, same number 3
．． Z! No. 7,046, 18] No. 3,271. /Hiroshi No. 7, same No. 3. Core/,/Hiro No. 1, % opening 10-7133λ
Same issue! J-303 No. 1, 12-/11! ko,
same! , No. 3-72j, No. 13-10247.

Other U.S. patents, j7j, J/4, voice J, 2゜r
Also mentioned are the mordants described in the specification of No. 1ris.

These mordants are preferably non-photosensitive hydrophilic colloids that are difficult to migrate from one to another.

For example, those that crosslink with hydrophilic colloids such as seratin, water-insoluble mordants, and aqueous sol (or latex dispersion) type mordants can be preferably used.

Particularly preferred polymer mordants are shown below.

(A group having a 11u-class ammonium tree and capable of covalently bonding to gelatin (for example, an aldehyde group, a chloroalkanoyl group, a chloroalkyl group, a vinylsulfonyl group, a hyricinium clobionyl group).

For example, (2) a copolymer consisting of a repeating unit of a monomer represented by the following general formula (W) and a repeating unit of another ethylenically unsaturated monomer, and a crosslinked Reaction product 6 with an agent (the list is bisalkanesulfonate, bisarenesulfonate) General formula (■) Q; Divalent group R, R, R,; Alkyl group, aryl group.

H, t7'( may be formed by combining at least λ of R3-R5 to form a heterocycle.

X: anion (the above alkyl groups and aryl groups are often substituted) (3) General formula (K) of the following polymer represented by Kl ; about 0 to about 0 mol% 2; about 10 to about 2 mol% A; 7-mer B having at least two ethylenically unsaturated bonds; copolymerizable ethylenically unsaturated monomer Q;
N, PR, ReR3i alkyl group, 111-shaped hydrocarbon group, or at least two of R - R3 may be combined to form a ring (These groups and rings may be substituted. ) (4) (a) represented by the following general formula (X),
(Copolymer general formula (X) consisting of bJ and (C) (a) X; hydrogen atom, alkyl group, or hydrogen atom. (
The alkyl group may be substituted.) Acrylic acid ester (c) Acrylonitrile (5) The repeating unit represented by the following general formula (M) /
/J or more Water-insoluble polymer General formula (M) R1, R2, R3; each represents an alkyl group, R1
-The total number of carbon atoms in R3 is 12 or more. (The alkyl group may be substituted.) X: Gelatin is most preferred as the anion-insensitive hydrophilic colloid.
Various known gelatins can be used. For example 1
It is also possible to use gelatin produced by different methods of producing gelatin, such as lime-treated gelatin and acid-treated ceratin, or gelatin obtained by chemically modifying the obtained ceratin, such as heptadalization or sulfonylation. Moreover, if necessary, it can be used after being subjected to desalting treatment.

The mixing ratio of the polymer mordant and gelatin of the present invention and the coating amount of the polymer mordant can be easily determined by those skilled in the art depending on the dye to be mordant, the type and composition of the polymer mordant, etc. , mordant/ceratin ratio J O
/, r O-10/20 (fi amount ratio), mordant coating il is preferably used at O8 to 19/m2.

The photosensitive emulsion layer and/or the non-photosensitive hydrophilic colloid layer of the present invention may contain various known agents for various purposes such as coating aid, antistatic properties, improving slipperiness, dispersing emulsions, preventing adhesion, and improving photographic properties. surfactants may be used.

When using a mordant, it is preferable to use an anionic surfactant and an amphoteric surfactant together in order to facilitate application and improve mordant properties. These surfactants may be added to the coating solution for non-photosensitive parent water-based colloids or to the coating solution for emulsion proboscis6. Easy to decide.

The anionic group of the anionic surfactant used in the present invention can be a sulfonic acid group, a carboxylic acid group, a phosphoric acid group, etc., and the hydrophobic part is a carbon (L hydrogen 1 partially or fully fluorinated carbon). (Arsenic, etc.) The anionic surfactants preferably used in the present invention have the following general formula 8c [C-/)~
[This is represented by C-taco, but this invention is not essential to this invention.

(C-/] R1'-CON+CH29SO3M However, R1G is a saturated or unsaturated hydrocarbon group having 3 to 20 carbon atoms and its fluorine electroconverter, R11 is a hydrogen atom,
It is a memole group, an ethyl group, or a propyl group. n is 1~
It must be an integer of 0, particularly preferably l to j. M is monovalent alkali gold maple.

Particularly preferred are Na and K.

[C-co]

[C-J] [C-co), (C-j) in RIO, M.

n has the same meaning as in the general formula CC-/). a represents O.l or λ. m is an integer of /-4, and 1% is preferably 1%.

[C-gu]

[C-j] R"-0-80M [C-4] [C-da], [C-! ], [C-4].

R and M have the same meanings as in General Formula 1:c-/).

rc-7) However, %R''' and M have the same meaning in the general formula 1:c-/), and 1m has the same meaning as in the general formula CC-J, 1.

[C-4] [C-ta] Cc-r ], (cy), the hydrogen moiety of the rt12h carbon number 3 to -22 is a fluorinated saturated or unsaturated hydrocarbon. , preferably carbon number 7~/If
It is. R and M have the same meanings as in the general formula (C-/), and 1m has the same meaning as in the general formula [C-2]K.

Specific specifications of the anionic surfactant that is particularly preferably used are as follows.

('-/ CHC0NHCH2803Na C7F□5CONH(CH2)2SO3NgCH3 C8H F C0N (CH2) 2803KC-Hiroshi C-ta CH2-COOC8H17 NaO3S-OH-COOC8H,.

C-i.

CH-0-So3 to C-// C H O SOaNa (,'-72 C-/J C6F17-SO2NH(CH2)scOONaC-/
DaC 1 7 F 3 3 So 2NH ( CH2
) 4 COONaC13F27SO□Nu (CH2)
30PO(OH) 2 The amphoteric surfactant used in the present invention refers to a surfactant that has both an anionic group and a cationic group in its molecule to form an inner salt.

It is represented by the following general formula [D].

General formula CD) A and Ce In the general formula (D), Ae represents an anionic residue rich in anionic groups such as a sulfonic acid group, a carboxylic acid group, and a phosphoric acid group, and Ce represents an organic cationic residue.

Specific examples of particularly preferably used amphoteric surfactants are as follows.

1)-/(IO-carboxydecyl)dimethyldodecylammonium hydroxide D-2 (J-carboxyethyl)dimethyldodecylammonium hydroxide 1)-J(J-sulfopropyl)dimethyl dodecylammonium hydroxide D-$(μm sulfobutyl]diethyl dodecylammonium hydroxide 1)-jlJ-carboxyethyl)dimethyl octadecyl ammonium hydroxide D-A (J-sulfopropyl)dimethyl octadecyl ammonium hydroxide D-7 ccarboxymethyl)dimethyl octadecyl ammonium hydroxide D-4 ( carboxymethyl)dimethyl undecyl carbamoyl propyl ammonium hydroxide D-ta(3-sulfozonal)dimethyl undecyl
Carbamoyl propyl ammonium hydroxide 1) -10 /-(10-carboxydecyl)pyridium hydroxide])-// /-(10-sulfatedecyl)pyridium hydroxide])-/-2 3-carboxy-l- Dotesylpyridinium hydroxide, [)-/J /-(/-carboxytridecylpyridinium hydroxide) In the present invention, in addition to the above-mentioned anionic surfactants and amphoteric surfactants, for example, saponin (steroidal), polyalkylene Glycolalkylamines or amides.

polyethylene oxide adducts of silicone).

Crisidol derivatives (e.g. alkenylsuccinic acid polyglycerides, alkylphenol polyglycerides), fatty acid esters of polyhydric alcohols.

Non-ionic surfactants such as shield alkyl esters, urethanes or ethers; alkyl amine salts, tlkJ fatty acids or aromatic secondary ammonium salts, complex term firsts such as pyridinium and imidazolium;
Cationic surfactants such as ammonium salts, aliphatic or heterocyclic phosphonium or sulfonium salts can be used in combination.

When polyalkylene oxides are used in the present invention, molecular weight 6
00 or more polyalkylene oxides are preferred.

The internally inverted silver halide emulsion used in the present invention may be a so-called internal latent chamber emulsion that uses a fogging agent at the time of production, but it is preferable that optical or chemical Preferably, the emulsion is of the type that is fogged and forms a positive image after normal exposure to light and normal printing.

The prefogged direct reversal silver halide emulsions of the present invention include silver chlorobromide, silver chloroiodromide, and iron bromide.

Silver halide such as silver iodobromide emulsions (preferably 1 mole or less in these) and other silver halide emulsions are dispersed in the snares and colloids described below, and these seven emulsions can be prepared by various methods. The %I/logen composition produced by various methods such as the neutral method, the ammonia method, the neutral method, or the method using a thioether solvent as described in U.S. Pat. The amount of B2ff is preferably 12 tmol or more, and more preferably 50 mol or more. Particularly preferred is pure silver bromide. Particle size is % Oo
O~0.2μ, preferably o, i~O0μμ.

Emulsions used in the direct positive silver halide photosensitive material used in the present invention are classified into two types: primary. One such emulsion consists of halogenated steel grains whose surfaces are prefogged and which have a nucleus capable of trapping free electrons inside the halogen (t' silver).The characteristics of this type of emulsion are as follows: By itself, it directly causes a positive effect, and by adding a sensitizing dye, it can be made to have a spectral sensitizing effect.

Not only high sensitivity but also sensitization of the specific absorption region can be provided. Group 1, metal salts are preferably used as free electron trapping nuclei in emulsions of this type.

Another type of emulsion is one in which free electron trap nuclei are not provided inside the silver halide, and the surface of the silver halide is chemically covered. This emulsion itself does not give any [adhesion 1].

An example of an emulsion with electron trap nuclei that directly gives a positive image by using an organic desensitizer is Japanese Patent Publication No. 4C3-DA12.
No. 1! Kimiakida 3-2 free O! , U.S. Patent No. 2≠010
! / No. λ7t74C No. 3023102
No., British Patent No. 707704A, f! ! 1st iori 7
9 Tata, the first French patent! KoOf2μ No. 1j20
No. 1117, Belgian Patent No. 7/Jλ7 Co No. 7
The emulsions described in No.-1jt No. 7 and No. ttt'ytr can be used.

Examples of emulsions without electron traps include 1, for example, British Patent No. 1 ittyiy, British Patent No. 111rA7i, British Patent No. 1
/Ibu7/, U.S. Patent No. 310 isot, U.S. Patent No. 3
! 0/307 No. 310 iJio No. 3131
Emulsions described in Japanese Patent No. 211, No. 1TS0117, etc. can be used.

In any case, the silver halide photographic emulsion used in the present invention is photo- or chemically fogged in advance.

Chemical fogging agents such as hydrazine derivatives, thiourea dioxide, formalin, amineporan, and stannous salts can be used to fog.

In addition, the emulsion may be made of silver or gold which is electrically positive, for example,
It can be fogged using rhodium, platinum, iridium, etc. The degree of fogging of a direct reversal silver halide emulsion can be varied over a wide range, depending on the grain size of the silver halide composition used, the type and concentration of the fogging agent used, and the point at which capri is imparted. The pH of the emulsion of
p A 9-temperature.

Related to time etc.

The silver halide triple emulsion used in the present invention is:

Other photographic additives may also be added. For example, rhodium salts as desensitizers (preferably 10' to 10
Stabilizers (for example, mercapto compounds, tetrazaindene compounds), hardeners (for example, aldehyde compounds, λ-hydroxyda, t-dichloro-l) .

There are additives such as J, r-) riazine, N-methylol compounds, and hinyl sulfone compounds), and these are described in Research Disclosure RD-i7A4! J(t?
(December 1971)

The photographic emulsion of the present invention may be enriched with a dispersion of a water-insoluble or bath-resistant @-polymer for the purpose of improving sonic stability. For example, alkyl (meth)acrylate,
alcothousalthyl (meth)acrylate, (meth)acrylamide, vinyl ester (e.g. vinyl acetate)
, acrylonitrile, etc., can be used alone or in combination. A specific example thereof is U.S. Patent λ, 37b.

No. 002, pJ73P137%, firHutt Pi
No. 1, No. 3 er 7 or No. 3607 Kota O.

It is described in No. 34317/J, etc.

It is advantageous for the emulsion used in the present invention to contain mainly gelatin as a retaining colloid, with 1% inert gelatin being used. Instead of gelatin, essentially inert gelatin fermentation conductors (for example, heptalized gelatin), water-soluble polymers such as polyvinyl acrylate, polyvinyl alcohol, polyvinylpyrrolidone, etc. are used.

The novel emulsions of the present invention can be made from any suitable photographic support, such as glass, film base fHJ, cellulose acetate, cellulose acetate butyrate, polyesters (eg poly(ethylene terephthalate)), and the like.

As the solution used in the present invention, a so-called squirrel-type solution with a low concentration of sulfite ions can be used, and it is possible to use a sufficient amount of sulfite ions as a preservative (especially 0./j mol/J!).
! (above)) You can use the current bride solution containing maku, DH
1 or more, especially 10. It is also possible to use the current sanitation solution of j to lλ, 3.

There are no particular limitations on the active agents that can be used in the method of the present invention, such as dihydroxybenzenes (PJ or hydroquinone), 3-pyrazolidones (such as l-phenyl-3-pyrazolidone, 4c), etc.

3-dimethyl-/-phenyl-3-pyrazolidone).

Aminophenols (for example, N-methyl-p-aminephenol) can be used alone or in combination.

The current solution also contains sulfites of alkali metals.

pH buffers such as carbonates, borates, and phosphates, odors (1'' compounds, iodides, and antifoggants (preferably nitroindazoles or benzotriazoles for 'F#)) 1f such as development inhibitors or antifoggants, etc.
r: can be used. Also, if necessary, a water softener,
Dissolution aid 1 Color toning agent, development accelerator, surfactant (especially preferred 1) the above-mentioned polyalkylene oxides, antifoaming agent,
It may also contain a hardening agent, a film silver stain preventive agent (for example, 2-mercaptobenzimidazole sulfonic acids), and the like.

The specific list of these additives is listed in Research Disclosure 7.
It is described in No. 74 No. 174173.

The processing temperature is usually chosen between t r 0 (? - to 'C), but it may also be lower than /ff'c or higher than !O0C.

As the fixer, one having a commonly used composition can be used. As the fixing agent, in addition to thiosulfates and thiocyanates, real sulfur compounds known to be effective as fixing agents can be used. Further, the fixing solution may be enriched with a water-soluble aluminum salt or the like as a hardening agent.

It is preferable to use an automatic developing machine for photographic processing.

The present invention will be explained in more detail in the following examples.

Implementation fPIIl Aqueous solution of potassium bromide and nitric acid 1! I! An aqueous silver solution was added to an aqueous gelatin solution in the presence of a rhodium salt at one time while stirring to prepare a silver bromide gelatin emulsion having an average particle size of about 12 μm. This emulsion was prepared using a precipitation method using a polyanionic polymer (70%
Desalination is carried out using p l (f / 0
After adjusting the amount of cojmI hydrazi/
was added and heated to give fog. To this direct inversion silver bromide emulsion, λ-hydroxy-μ, t-dichloro-/
, J, j - After adding sodium triazine, it was coated on a polyethylene terephthalate film so that the coated silver amount was 3°0117 m2.Gelatin, surfactant ('-7,2,
D-1 and mordant E (compound included in general formula (i))
A gelatin aqueous solution consisting of an artificial dye (AJ, Ri, 16) was applied as a preservative, and sample 7 was prepared as shown in Table 1.
81 was produced. The mordant was applied at a ratio of 'Ji'/m2.

Mordant E C2) 1゜The sample thus obtained was passed through a light wedge and exposed to light using a P407 printer manufactured by Dainippon Screen Co., Ltd., and then molded with a liquid of the following composition for 10 seconds at 3r0C, and then stopped. ,
The results of fixing, washing, and drying are shown in Section 1I.

<Current liquid composition> (Note) In Table 1.

l) Relative sensitivity; concentration/,! The reciprocal of the exposure amount giving sample 3 is ioo.

λ) r; (7, 0-0-J)/-LJog(
Density 0.3t - exposure amount to give) - iog (exposure amount to give density 3.0) The exposed sample was exposed to UV-cut fluorescent lamp JO (left for 40 minutes under 71ux light intensity, and then subjected to the same oxidation treatment as above to determine the halftone dot %).
was measured.

In No. 1!1, comparative sample λ, 3. Since no mordant was used in this sample, the dye added to the protective layer also diffused into the emulsion layer. ,
At t, 7, the mordant is used to substantially fix the dye to the protective layer, so the safelight property can be improved without reducing γ.

Example λ Samples 7 and 1 prepared in Example 1) and samples that differ only in rogen composition were prepared using sea urchin seeds shown in Table 2 (Ar, y, io
, tt) was prepared and treated in the same manner as in Example 1 to obtain sensitivity,
Comma and Dmin were measured.

Claims (1)

[Claims] In a direct reversal type silver halide photosensitive material having a silver halide emulsion layer consisting of silver halide grains and a non-photosensitive hydrophilic colloid layer on top of the silver halide emulsion layer, the dye that reduces the sensitivity of the previous emulsion layer is substantially Direct reversal type silver halide photosensitive material characterized by containing it only in the hydrophilic colloid layer