Fuji Photo Film Company, Limited

Yoshitaka Akimura

Hiroyuki Mifune

Shunji Takada

Eiichi Okutsu

Shigeo Hirano

Nobuyuki Tsujino

Nobuo Sakai

Yoshiharu Fuseya

Koki Nakamura

Yoshihiro Takagi

Tadao Shishido

Shigenori Moriuchi

Naomi Saeki

Taiji Hashimura

A silver halide photographic light-sensitive material is disclosed. The material is comprised of a support having positioned thereon a silver halide emulsion layer and a compound represented by the general formula (I): ##STR1## wherein R is a halogen atom or an alkyl group and n is 1, 2 or 3 and when n is 2 or 3 each R may be the same or different. Utilization of the compound represented by the general formula (I) aids in the elimination of the generation of fog without creating undesirable influences on the photographic properties of the material.

Silver halide photographic light-sensitive materials

A silver halide photographic light-sensitive material and a developing process used in connection with that material are disclosed. The material is comprised of a support having thereon a silver halide emulsion layer containing a silver halide emulsion in which at least 80 mole % of the whole silver halide is composed of silver chloride, the mean grain size thereof is less than 0.4 .mu.m, and which contains more than 1.times.10.sup.-6 mole of a water-soluble rhodium salt per mole of silver at an optional period before finishing the first ripening in the production step for the silver halide emulsion. The material also contains 1.times.10.sup.-5 to 1.times.10.sup.-2 mole of polyalkylene oxide having a molecular weight of at least 600 or a derivative thereof per mole of silver. The process involves imagewise exposing the material and processing it in a developer containing 0.05 to 0.5 mole/liter of a dihydroxybenzene series developing agent, 0 to 0.05 g/liter of an auxiliary developing agent, at least 0.25 mole/liter of a free sulfite ion, at least 20 mg/liter of 5- or 6-nitroindazole, and an alkali of an amount sufficient for keeping the pH of the developer higher than 10.5. The material and processing are capable of providing good letter image quality in a short developing time.

Silver halide photographic materials and process of developing them

A method of forming negative dot images which comprises imagewise exposing through a contact screen a silver halide photographilic light-sensitive material of substantially the surface latent image type containing in a silver halide emulsion layer or another hydrophilic colloidal layer

Method of forming negative dot images

A method for forming a high contrast negative photographic image, which comprises imagewise exposing a photographic material comprising a support having thereon at least one photographic silver halide emulsion layer with the photographic silver halide emulsion layer or at least one hydrophilic colloid layer of the photographic material containing a compound of the general formula (I)

Method for forming high contrast photographic image

A photographic image-forming method comprising imagewise exposing a silver halide photographic light-sensitive element containing a specific hydroquinone derivative in the silver halide emulsion layer of substantially the surface latent image type or at least one hydrophilic colloid layer thereof and then developing the exposed light-sensitive element in the presence of a specific hydrazine compound. The method forms a photographic image having markedly high negative gradation.

Photographic image-forming method

A silver halide photographic light-sensitive material is described, comprising at least one silver halide photographic emulsion layer, wherein at least one layer contains a compound represented by formula (I) ##STR1## wherein R.sup.1 and R.sup.2 each represents hydrogen, an aliphatic group, an aromatic group, or a heterocyclic group;

A silver halide photographic material providing very high contrast and negative image photographic characteristics comprising a support having thereon at least one silver halide photographic emulsion layer containing substantially surface latent image type mono-dispersed silver halide grains and providing a negative image, at least one hydrophilic colloid layer of the photographic material containing a compound represented by the general formula (I)

Highly-sensitive high-contrast photographic materials

A method of forming an extremely high-contrast negative photographic image which comprises image-wise exposing a photographic light-sensitive material comprising a support having thereon a mono-disperse silver halide emulsion layer containing surface latent image type silver halide grains and also containing a compound represented by the following general formula (1):

Method of forming a high-contrast photographic image

A silver halide photographic light-sensitive material having at least one silver halide photographic emulsion layer comprising substantially surface latent image type silver halide grains, and containing in said photographic emulsion layer or at least one of other hydrophilic colloid layers a compound represented by the following general formula (I): ##STR1## wherein X.sup.1 represents a group containing a ##STR2## moiety, Ar.sup.1 and Ar.sup.2 each represents a substituted or unsubstituted aromatic group, B represents a divalent linking group, n is 0 or 1, and R.sup.1 represents a hydrogen atom, an unsubstituted alkyl group, or a substituted or unsubstituted aryl group.

Silver halide photographic light-sensitive material

A process for forming a very contrasty negative photographic image which comprises developing a photographic light-sensitive material comprising a support having thereon at least one layer of a negative image monodispersed silver halide photographic emulsion comprising substantially surface latent image type silver halide grains, wherein the average grain size of the silver halide grains is 0.7 micron or less, with the silver halide photographic emulsion containing a binder in an amount of 250 g or less per mol of silver halide, and at least one hydrographic colloid layer containing a compound represented by the following general formula (I):

Process for forming contrasty image

A negative image silver halide photographic emulsion comprising substantially surface latent image type monodispersed silver bromide or silver iodobromide grains containing up to about 10 mol% silver iodide, wherein the average grain size of the silver halide grains is about 0.7 micron or less, with the silver halide photographic emulsion containing a binder in an amount of about 250 g or less per mol of silver halide and a compound represented by the following general formula (I):

Silver halide photographic emulsions and image forming process

A process for producing a high contrast photographic image comprising developing an image-wise exposed silver halide photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer with a developer containing (a) free sulfite ion in a concentration of at least 0.18 mol/l and (b) as substantially the only developing agent a dihydroxybenzene in the presence of (i) at least one compound represented by the following general formula (I);

Process for producing a high contrast photographic image

A negative image silver halide photographic emulsion comprising substantially surface latent image-type silver chlorobromide or silver chlorobromoiodide grains with an iodide content of up to about 7 mol%, wherein the mean grain size of the silver halide grains is not greater than about 0.7.mu., a binder is present in an amount of not more than about 250 g per mol of silver halide, and at least one compound represented by the following general formula (I):

Silver halide photographic emulsion

A silver halide photographic light-sensitive material containing at least one negative image silver halide photographic emulsion layer comprising silver halide grains that have an average grain size of not more than about 0.7 .mu. and are substantially of the surface latent image type and containing a binder in an amount of not more than about 250 g per mol of silver halide, and containing a compound represented by the following general formula (I):

Growing community of inventors

Minami-ashigara, Japan

Yoshitaka Akimura