Abstract: A process of preparing an inorganic compound is disclosed, comprising the steps of (a) allowing at least an inorganic raw material compounds (A) and an inorganic raw material compound (B) which are different in solubility in water to react with each other in the presence of a reaction solvent with stirring to deposit an inorganic compound (C), while allowing a part of each of the compound (A) and compound (B) to exist as a solid; and

Abstract: A method for accomplishing an electronic image information transmitting service, comprising steps of: selecting by a second party whether or not to receive the electronic image information transmitting service; inputting by a first party with an inputting means information regarding the second party and a selection result by the second party in the selecting step; converting by the first party an image on a developed photographic film or on a developed photographic paper exposed based on the developed photographic film into electronic image information when the second party selects so as to receive the electronic image information transmitting service; accumulating the electronic image information converted by the first party in an accumulating means; and transmitting the electronic image information by a transmitting means through a communicating means to a reception destination designated by the second party.

Abstract: A method for accomplishing an electronic image information transmitting service, comprising steps of: selecting by a second party whether or not to receive the electronic image information transmitting service; inputting by a first party with an inputting means information regarding the second party and a selection result by the second party in the selecting step; converting by the first party an image on a developed photographic film or on a developed photographic paper exposed based on the developed photographic film into electronic image information when the second party selects so as to receive the electronic image information transmitting service; accumulating the electronic image information converted by the first party in an accumulating means; and transmitting the electronic image information by a transmitting means through a communicating means to a reception destination designated by the second party.

Abstract: A silver halide photographic emulsion is disclosed, containing tabular silver halide grains each comprising plural silver halide phases different in a silver iodide content from each other, in which a highest silver iodide containing phase has a silver iodide content of not less than 5 mol % and less than 15 mol %, and a lower silver iodide containing phase is present outside and contiguous to the highest silver iodide containing phase; the tabular grains having 5 or more dislocation lines per grain and accounting for not less than 30% by number of total silver halide grains, the tabular grains further having a hole trap zone within the grain.

Abstract: The improved silver halide photographic material has one or more silver halide emulsion layers on a support and at least one of said emulsion layers contains silver halide grains which are of normal crystal form having at least one concave crystal face. This photographic material has not only high sensitivity but also good keeping quality.

Abstract: A method for manufacturing a silver halide emulsion comprising core/shell type silver iodobromide grains, said emulsion having an average iodide content of 3 mol % or more, each of the grains having two or more phases different in silver iodide content from each other which comprises an inner phase having silver iodide content of 10 mol % or more and an outermost phase having a silver iodide content lower than the iodide content of the inner phase, wherein a compound represented by the following formula [I] is present at least in a process prior to a desalting process:formula [I] ##STR1## wherein Z represents a group of atoms necessary to form a five- or six-membered heterocycle, which may be a condensed ring; and M represents an alkali metal atom or ammonium group.

Abstract: A silver halide emulsion is provided, which comprises silver halide twinned-crystal grains and satisfy the following requirements (1) and (2):(1) the longest distance between twin planes is within the range of 10 to 100 .ANG. on the average,(2) said silver halide grains each comprise a core comprising silver iodobromide having a silver iodide content of not less than 7 mol % and a shell comprising one or more layers different in halide composition from each other, in which at least one layer of the shell comprises silver iodobromide or silver bromide, the outermost layer having a silver iodide content of 0 to 4 mol %.

Abstract: The present invention describes a silver halide color negative photographic light-sensitive material having an improved graininess and an excellent image quality even when picture-taken under various light sources each having a color temperature different from daylight. A silver halide color photographic material comprises a light-sensitive layer unit containing a red-sensitive silver halide emulsion and a cyan coupler, a light-sensitive layer unit containing a green-sensitive silver halide emulsion and a magenta coupler, and a light-sensitive layer unit containing a blue-sensitive silver halide emulsion and a yellow coupler, wherein RMS granularity of at least one of the light-sensitive layer units has the following relations;1.1 RMS.sub.0 .ltoreq.RMS.sub.1 .ltoreq.1.5 RMS.sub.0 and0.9 RMS.sub.0 .ltoreq.RMS.sub.2 .ltoreq.1.2 RMS.sub.0wherein RMS.sub.0 is an RMS value at a minimum density portion of the layer unit, RMS.sub.1 is an RMS value at a density portion of the minimum density+0.

Abstract: Disclosed is a photographic silver halide emulsion comprising a tabular silver halide grains having at least two twin crystal planes, at least one of an unsymmetrical cyanine represented by Formula I, at least one of a symmetrical cyanine represented by Formula II-(a), and at least one of a symmetrical cyanine represented by Formula II-(b); ##STR1## wherein Z.sub.1 and Z.sub.2 each represents a group of atoms necessary to form a naphthoxazole ring, a naphthoimidazole ring, a naphthoselenazole ring, a benzoxazole ring, a benzothiazole ring, a benzimidazole ring, a benzselenazole ring, Z.sub.1 and Z.sub.2 are not the same as each other, a heterocyclic ring formed by Z.sub.1, Z.sub.2 may have a substituent; R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 each represents an unsubstituted alkyl group or a substituted alkyl group; m represents an integer of 0 to 2, L.sub.1 to L.sub.9 each represents a methine group or a substituted group; X.sub.1, X.sub.2 and X.sub.

Abstract: A photosensitive silver halide photographic material having a support and, provided thereon, the photographic component layers including at least one silver halide emulsion layer containing silver halide grains (1) having at least two kinds of halogens, is disclosed. The silver halide grains (1) are grown to in a system in the presence of silver halide grains (2) coexisting:with silver halide grains which are growing to the silver halide grains (1),for at least some portion of period that said silver halide grains are growing in the system,and comprising solubility product less than that of said growing silver halide grains.

Abstract: A method of producing a silver halide emulsion and a silver halide photographic light-sensitive material containing the emulsion are disclosed. The silver halide emulsion comprises light-sensitive silver halide grains containing at least one of first silver halide phases and at least one of second silver halide phases. The method comprises the steps of (a) forming the first silver halide phases in the presence of substantially one kind of first fine silver halide grains, said first silver halide phases having a silver halide composition different from that of the first fine silver halide grains, and (b) forming the second silver halide phases by supplying second fine silver halide grains having a solubility product higher than that of the first fine silver halide grains.

Abstract: A negative type silver halide photographic material having silver halide grains of a core-shell structure. An inner core essentially consists of silver bromide or silver iodobromide and a plurality of shells consists essentially of silver bromide or silver iodobromide. The shells of each silver halide grain have (1) an outermost shell containing silver iodide of 0 to 10 mol %, (2) a highly iodide-containing shell provided inside the outermost shell and having a silver iodide content at least 6 mol % higher than that of the outermost shell, and (3) an intermediate shell provided between the outermost shell and the high iodide-containing shell. The silver iodide content of the intermediate shell is 3 mol % higher than that of the outermost shell and at least 3 mol % lower than that of the high iodide-containing shell.

Abstract: A silver halide photographic light-sensitive material comprises a silver halide photographic emulsion containing tabular silver halide twin crystal grains having a ratio of grain diameter to thickness of less than 5, wherein projection areas of said silver halide grains are 50% or more of total projection area of all grains; and said silver halide grains are monodipersed and have relatively high iodide content in the interior of the grain. The silver halide grain emulsion is prepared by supplying a silver component and a halide component in the presence of continuously supplied silver halide grains whose solubility product is lower than that of growing monodispersed silver halide grains for at least a given period of time during the grain growth. The photographic material provides improved sensitivity and image quality.

Abstract: A silver halide photographic light-sensitive material is disclosed which comprises a support and, provided thereon, a silver halide emulsion layer comprising silver halide grains having a surface phase and an internal phase adjacent to said surface phase. The internal phase has a thickness of 100 .ANG., and the silver iodide content of the surface phase is higher than that of the internal phase.

Abstract: A silver halide color photographic light-sensitive material of which the color reproducibility and printing suitability are kept improved against the variation of photographing conditions, such as a change in light source, is disclosed. The photographic material comprises a support and provided thereon a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a blue-sensitive silver halide emulsion layer, wherein at least one of said emulsion layers is of three-layer structure comprising a low-speed elemental emulsion layer, a medium-speed elemental emulsion layer and a high speed emulsion layer arranged in this sequence from the side facing the support, and a maximum color density of said medium-speed emulsion layer is not more than 0.35.

Abstract: Silver halide grains for use in silver halide photography having a regular crystal shape and including at most two irregularly grown crystal faces and a silver halide photo-sensitive material containing these silver halide grains are disclosed.

Abstract: A silver halide photographic material in which at least one silver halide emulsion layer coated onto a base support has been subjected to supersensitization by the combination of at least one symmetrical carbocyanine dye having two symmetrical heterocyclic structures, at least one other symmetrical carbocyanine dye having two symmetrical heterocyclic structures, and at least one asymmetrical carbocyanine dye having either one of the two heterocyclic structures in the first symmetrical carbocyanine dye and either one of the two heterocyclic structures in the second symmetrical carbocyanine dye. This photographic material has high spectral sensitivity and good storage stability since it is resistant to desensitization due to desorption of spectral sensitizers from silver halides.

Abstract: A silver halide color negative photographic light-sensitive material is disclosed which is improved on stability to fluctuation of processing conditions applied thereon, and has a sufficient wide exposure latitude. The photographic material is also improved on standing stability of silver halide emulsion in the course of manufacturing thereof. The photographic material comprises a support having thereon photographic component layers including at least one silver halide emulsion layer containing at least two groups of silver halide grains each being substantially different in desensitizing agent content from each other.

Abstract: Disclosed is a color image forming system comprising an optical scanning exposure apparatus by which scanning is made on a light-sensitive silver halide color photographic material, wherein a He-Cd gas laser is used as a blue light source and a He-Ne gas laser is used as a green light source, respectively; or wherein a He-Ne gas laser is used as a green light source and at least one layer of the light-sensitive silver halide color photographic material contains silver chloride in an amount of 90 to 100 mole %.The color image forming system of this invention has a scanning exposure apparatus using inexpensive, stable, compact and long-life light sources and can obtain a color image of high image quality with good color reproducibility. Also, the system can be made inexpensive and compact as a whole.

Abstract: A silver halide photographic material is disclosed, said material having silver halide emulsion layers on a support, the emulsion in said silver halide emulsion layers containing magenta coupler represented by the following formula (I), said emulsion containing silver halide grains which have a (110) plane and/or a crystal plane having an edge running through substantially the center of a (110) plane, the silver halide composition of said grains being substantially made of silver bromide and/or silver iodobromide: ##STR1## where Z represents a group of the non-metallic atoms necessary for forming a nitrogen-containing hetero ring which may have a substituent; X is a hydrogen atom or a substituent which is capable of being eliminated upon reaction with the oxidation product of a color developing agent; and R is a hydrogen atom or a substituent.