摘要:
An ink-jet printing head assembly having a substrate and a cover plate which are juxtaposed with a space provided therebetween, for a nozzle at one edge of said substrate, an air chamber behind said nozzle, and an ink chamber with an outlet into the air chamber beyond the air chamber. A first electrode is located along an edge of the inner surface of the substrate and on one side of the nozzle. A second electrode is located on the inner surface of said substrate in the outlet opening between the ink chamber and the air chamber and separated from the first electrode by a space. The printing head ink used is conductive. The surface tension of the ink prevents it from flowing out of the small outlet from the ink chamber into to the air chamber when air is flowing into said air chamber and out of the nozzle. When a voltage is applied across two electrodes the electric field between the electrodes creates an attractive force the overcomes the surface tension of the ink in the outlet and ink flows into the air chamber where droplets are formed and the air transports the to an object to be printed. A printing head assembly according to the invention having electrodes and nozzles with a high concentration per unit area can be realized by means of a film formation technique. Such a compact and lightweight designed printing head assembly with a high concentration of nozzles can be manufactured using mass production techniques.
摘要:
A process for processing color photographic papers using a color developer substantially free from benzyl alcohol and containing a compound represented by formula (I) ##STR1## wherein Z represents an atomic group forming an aromatic nucleus is disclosed. In the process, the formation of color stains is greatly reduced even in the case of shortening the processing times for the blix step and the wash and/or stabilization step after color development.
摘要:
A method is described for processing a silver halide color photographic material after imagewise exposure, comprising color developing, desilvering, and at least one of washing and stabilizing a silver halide color photographic material, wherein a color developer which does not substantially contain benzyl alcohol but comprises at least one compound represented by formula (I) ##STR1## wherein M.sup.1, M.sup.2, M.sup.3 and M.sup.4 each represents a hydrogen atom, an alkali metal ion, an ammonium ion, or 1/n of an n-valent cation is used for the color development.
摘要:
A novel method for processing a silver halide color photographic material is provided, which comprises processing a silver halide color photographic material having at least one silver halide emulsion layer on a reflective support with a color-developing solution substantially free of benzyl alcohol and containing at least one compound represented by formula (I) ##STR1## wherein R.sub.1 represents a hydrogen atom, --CH.sub.2 COOH, or ##STR2## R.sub.2 represents a hydrogen atom or --COOH; n represents an integer of 0 or 1; and Z represents atoms necessary for the formation of an aromatic ring.
摘要:
A method for processing a silver halide color photographic material is provided, which comprises subjecting an imagewise exposed silver halide color photographic material having at least one silver halide emulsion layer on a reflective support to color development for a period not exceeding 2 minutes and 30 seconds using a color-developing solution containing substantially no benzyl alcohol, a sulfite in a concentration of 8.times.10.sup.-3 mol/liter or less, and a hydroxylamine in a concentration of 1.5.times.10.sup.-2 mol/liter or less, thereby achieving high color densities of the developed images and reduced fog. The effects of this method are particularly significant in photographic paper containing a pyrazoloazole type magenta coupler.
摘要:
Disclosed is a heating resistor composed of tungsten of 35-45 at. %, aluminum of 25-35 at. %, nitrogen of 10-20 at. %, and oxygen of 5-20 at. %, and a thermal head comprising a heating resistor layer composed of tungsten of 35-45 at. %, aluminum of 25-35 at. %, nitrogen of 10-20 at. %, and oxygen of 5-20 at. %.
摘要:
Disclosed is a thermal head in which a heat-generating resistor layer, a power feeding conductor layer, and a protecting film are formed on an electrically insulating substrate, the heat generating resistor layer being constituted by an alloy of tantalum, rare earth metals, and nitrogen.Further disclosed is a method of producing a thermal head comprising the steps of forming a heat-generating resistor layer, a power feeding conductor layer, and a protecting film, on an electrically insulating substrate, the step of forming the heat-generating resistor layer including the step of performing spattering in mixed gases of argon and nitride to form the heat-generating resistor layer made of an alloy of tantalum, a rare earth metal material, and nitrogen, by using a composite target in which small pieces of the rare earth metal materials are disposed on a tantalum target.
摘要:
A method for forming an image in a silver halide color photographic light-sensitive material comprising developing an imagewise exposed silver halide color photographic light-sensitive material and then bleach fixing the silver halide color photographic light-sensitive material in a bleach fixing bath, the silver halide photographic color light sensitive material comprising a support having thereon a silver halide emulsion layer containing a yellow coupler, a silver halide emulsion layer containing a magenta coupler and a silver halide emulsion layer containing a cyan layer, wherein the silver halide emulsion layer containing the magneta coupler contains at least one kind of pyrazoloazole type coupler represented by the general formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a substituent; X represents a hydrogen atom or a group capable of being released upon a coupling reaction with an oxidation product of an aromatic primary amine developing agent; Za, Zb and Zc each represents a methine group, a substituted methine group, .dbd.N-- or --NH--, one of the Za-Zb bond and the Zb-Zc bond being a double bond and the other being a single bond; an aromatic ring may be condensed to the Zb-Zc bond; R.sup.1 or X may form a polymer including a dimer or more; and when Za, Zb or Zc is a substituted methine group, the substituted methine group may form a polymer including a dimer or more; a photographic layer of the silver halide color photographic light-sensitive material or a processing solution contains at least 5.8.times.10.sup.-4 mol per mol of silver halide contained in the silver halide color photographic light-sensitive material of at least one compound represented by the formulae (I) or (II): ##STR2## wherein R.sup.2, R.sup.3, R.sup.4 and R.sup.5, which may be the same or different, each represents a hydrogen atom, a hydroxy group, an aliphatic residue, an alkyl group substituted with an aromatic group, an alkyl group substituted with an alkoxy group, an alkyl group substituted with a hydroxy group, a carboxy group or an alkoxy carbonyl group or an aromatic residue; or R.sup.2 and R.sup.3 may be bonded each other to form a 5-membered or 6-membered saturated or unsaturated ring; and a developing agent which is introduced into the bleach-fixing bath is at least 1.0.times.10.sup.-4 mol per mol of a bleaching agent thereof.
摘要:
A process for processing a color photographic silver halide light-sensitive material comprising processing the color photographic silver halide light-sensitive material with a color developer containing at least one compound represented by the general formula (I): ##STR1## wherein X is a hydrogen atom, an alkali metal atom, an ammonium group, an alkyl group, or an aryl group; Y is a substituent on the phenyl group and is a halogen atom, an alkyl group, an alkoxy group, an amino group, a hydroxyl group, a nitro group, a sulfonic acid group or a carboxylic acid group; and n is 0, 1, 2, 3 or 4. Color developers containing the compounds of the general formula (I) have greatly increased stability and thus even after long-term storage, can be used to produce developed materials having superior photographic properties.
摘要:
A process for forming color images, and a silver halide color photographic material for use in the process, are described, said process comprising processing with a developer containing hydroxylamine a silver halide color photographic material comprising a support having thereon at least one red-sensitive silver halide emulsion layer, at least one green-sensitive silver halide emulsion layer, and at least one blue-sensitive silver halide emulsion layer, said blue-sensitive silver halide emulsion layer being disposed at a more upper portion than other color-sensitive silver halide emulsion layers, and said color photographic material further comprising (1) a light-insensitive layer containing at least one of a yellow colored magenta-dye-forming coupler and a yellow non-diffusible organic dye between the lowermost blue-sensitive silver halide emulsion layer and the uppermost layer of the other color-sensitive silver halide emulsion layers, and (2) a light-insensitive silver halide emulsion in any layer above said light-insensitive layer.