Konica Corporation

Akira Onodera

Yasushi Usagawa

Tatsuo Tanaka

Tawara Komamura

Hidenobu Ohya

Hidetaka Ninomiya

Katsunori Katoh

Masaru Tsuchiya

Kenzo Kasahara

Daisuke Ishibashi

Yoshihiro Mochizuki

Hitoshi Morimoto

An ink-jet recording sheet has a recording layer comprising a hydrophilic binder, fine inorganic particles having an average primary particle diameter of 30 nm or less, and a cation type water-soluble mordant having an average molecular weight of 50,000 or less. An ink-jet recording method in which excellent water resistance is provided.

Ink jet recording paper and ink jet recording method

A recording method comprising the step of ejecting an ink jet recording ink on an ink receiving material using an ink jet printer, the ink comprising a dye represented by the following Formula (1): ##STR1##

Ink jet recording ink and recording method employing the same

Disclosed is a silver halide photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer, a hydrazine compound is contained in said silver emulsion layer or at least one of other layers, wherein said material contains at least one compound represented by Formula I or Formula II, ##STR1## wherein R.sub.1 and R.sub.2 each independently represent an alkyl group, an alkenyl group or an alkynyl group respectively; R.sub.1 and R.sub.2 may form a ring; R.sub.3 represents a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group; L.sub.1 represents a divalent linking group; X represents a --[S--L.sub.2 --Y--(L.sub.3)n]-- group or a [--(L.sub.3)n--Y--L.sub.2 --S--]-- group, L.sub.2 represents an alkylene group or an alkenylene group, Y represents a carbonyl group, a sulfonyl group, a sulfoxy group, a phosphoryl group, L.sub.3 represents ##STR2## wherein Z.sub.1, Z.sub.2 and Z.sub.3 each independently represent a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group; n is an integer of 0 to 1; ##STR3## wherein R4, R5 and R.sub.6 each independently represent an alkyl group, an alkenyl group or an alkynyl group, further Formula II comprises a thioether structure and a --O--Y).sub.l structure, Y represents an alkylene group, an alkenylene group or an arylene group, l is an integer of 2 or more. The silver halide photographic light-sensitive material is capable offering high contrast.

Silver halide photographic light-sensitive material

There is disclosed a silver halide photographic light-sensitive material containing a compound represented by the following formula. The photographic material provides sufficiently high contrast images using a stable developer having a low pH value. The photographic material also provides a direct-positive type photographic material improved in image quality and storage stability. ##STR1##

Silver halide photographic light sensitive material

The improved silver halide photographic material contains a novel nucleating compound that is useful either as a contrast increasing agent in light-sensitive material for use in photochemical processes or as a foggant in direct positive light-sensitive materials.

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Hino, Japan

Akira Onodera