Abstract: Disclosed herein is an ink-jet recording process which comprises applying a first liquid at least containing a water-soluble resin having at least one carboxyl group or anhydride thereof, or sulfonic group per molecule to a recording medium and then applying an ink at least comprising water, an organic solvent, a dye, an alkali-soluble resin and an alkali to the portions where the first liquid has adhered, thereby forming an image. An ink set and an instrument for use in such a process are also disclosed.

Abstract: In a jet recording method, a normally solid recording material is placed in a heat-melted state in a path defined by a nozzle leading to an ejection outlet and, in a recording step, is imparted with a thermal energy corresponding to a recording signal to generate a bubble, thus ejecting a droplet of the recording material out of the ejection outlet. As an improvement, in the recording step, the bubble is caused to communicate with ambience, and the droplet is ejected in a diameter d (.mu.m) and at an average speed v (m/sec) satisfying: 10.ltoreq.d.ltoreq.60 and 7.ltoreq.v.ltoreq.20. As a result, the droplet is deposited on a recording medium without pileup or scattering.

Abstract: The alkaline storage battery comprises a positive electrode, a negative electrode, a separator, and alkaline electrolyte. The separator is a single layer of synthetic fiber non-woven fabric. Treating the separator to increase either the amount of fiber interconnection at the surface or the amount the fibers are broken apart at the surface or both improves separator strength without sacrificing permeability. This prevents internal short circuits, reduces internal pressure, and significantly improves battery lifetime.

Abstract: A normally solid recording material is heat-melted in a path defined by a nozzle leading to an ejection outlet and is imparted with a thermal energy from a heater corresponding to a recording signal to generate a bubble. As a result, a droplet of the recording material is ejected out of the ejection outlet under the action of the bubble while the bubble is caused to communicated with ambience. The normally solid recording material preferably contains a colorant, a first heat-fusible solid substance having a melting point Tm of 36.degree.-150.degree. C. and a boiling point Tb of 150.degree.-370.degree. C., and a second heat-fusible solid substance having a melting point Tm and a solidifying point Tf satisfying a relationship of Tm-Tf.ltoreq.30.degree. C. The distance between the heater and the ejection outlet, the sectional size of the nozzle and the thermal energy imparted by the heater are controlled to cause the bubble to communicate with ambience.

Abstract: Disclosed herein is an ink comprising a dye having at least one anionic group, an amino acid type polyamine or a polyethyleneimine containing at least 7 nitrogen atoms in its molecule, and water, wherein the dye is either a metallized azo dye or a nonmetallized azo dye satisfying the following conditions (x) and (y) at the same time:(x) no anionic group is situated at an ortho position to the azo bond, and at least one anionic group exists at another position than the ortho position to the azo bond; and(y) at least one aromatic residue is bonded to the azo bond, and the aromatic ring of the aromatic residue is a benzene or naphthalene ring, with the proviso that the aromatic rings situated on both sides of the azo bond are not naphthalene rings at the same time if present.

Abstract: Disclosed herein is an ink comprising a coloring material and a liquid medium dissolving the coloring material therein, wherein the ink comprises a dye having at least one ammonium ion as a counter ion and an ammonium salt of an inorganic or organic acid.

Abstract: Disclosed herein is an ink comprising at least a recording agent, a liquid medium dissolving the recording agent therein and a compound having thermo-reversible gelation property, wherein the ink is in a homogeneous solution system at 25.degree. C., and the compound having thermo-reversible gelation property separates out in the ink solution in a temperature range of from 30.degree. C. to 65.degree. C., so that the ink becomes a dispersion state. An ink-jet recording method and instruments making use of such an ink are also disclosed.

Abstract: A normally solid recording material for use in a jet recording method wherein a recording material is ejected through an ejection outlet for recording, is composed from a heat-fusible solid vehicle and a dye compound. The dye compound is formed as a salt of a dye having a group of --SO.sub.3 M or --COOM (wherein M denotes an alkali metal) and a linear alkylamine. As a result, the dye compound is provided with an increased molecular length, because of which the sublimability of the dye compound is suppressed to provide the recording material with improved fixability and freeness from a bleeding phenomenon that the color of a recorded image is transferred to another sheet contacting the image.

Abstract: A thermal transfer material including a support and a heat-transferable ink layer disposed thereon, wherein the heat-transferable ink layer has a storage elasticity modulus E' satisfying a relationship of: 1.times.10.sup.7 .ltoreq.E'.ltoreq.1.times.10.sup.9 N/m.sup.2 at 30.degree. C.; and the temperature providing a thermal differential value of dynamic energy loss angle (tan .delta.) satisfying a relationship of d(tan .delta.)/dT=1.times.10.sup.-2 is in the range of 40.degree. to 60.degree. C.

Abstract: A method for producing a liquid discharging recording head including an ink discharge opening, an ink supply opening, an ink channel communicating with the ink discharge opening and the ink supply opening, and an energy generating element provided corresponding to the ink channel and adapted for generating energy to be utilized for ink discharge comprises the steps of:forming a first photosensitive material layer for ink channel formation, on a substrate bearing thereon the energy generating element;pattern exposing the first photosensitive material layer for forming the ink channel;forming a second photosensitive material layer on the first photosensitive material layer;pattern exposing the second photosensitive material layer for forming the ink discharge opening and the ink supply opening; anddeveloping the first and the second layers of photosensitive materials.

Abstract: A normally solid recording material is heat-melted in a path defined by a nozzle leading to an ejection outlet and is imparted with a thermal energy from a heater corresponding to a recording signal to generate a bubble. As a result, a droplet of the recording material is ejected out of the ejection outlet under the action of the bubble while the bubble is caused to communicate with ambience. The normally solid recording material preferably contains a colorant, a first heat-fusible solid substance having a melting point Tm of 36.degree.-150.degree. C. and a boiling point Tb of 150.degree.-370.degree. C., and a second heat-fusible solid substance having a melting point Tm and a solidifying point Tf satisfying a relationship of Tm-Tf.ltoreq.30.degree. C. The distance between the heater and the ejection outlet, the sectional size of the nozzle and the thermal energy imparted by the heater are controlled to cause the bubble to communicate with ambience.

Abstract: A thermal transfer material including a support and a heat-transferable ink layer disposed thereon, wherein the heat-transferable ink layer has a storage elasticity modulus E' satisfying a relationship of: 1.times.10.sup.7 .ltoreq.E'.ltoreq.1.times.10.sup.9 N/m.sup.2 at 30.degree. C.; and the temperature providing a thermal differential value of dynamic energy loss angle (tan.delta.) satisfying a relationship of d(tan.delta.)/dT=1.times.10.sup.-2 is in the range of 40.degree. to 60.degree. C.

Abstract: Thermal transfer recording is improved by a recording method involving providing a thermal transfer material having a support and an ink layer disposed thereon and which in turn includes a binder and a colorant. The binder includes 45-70 wt. % of an ethylene-vinyl acetate copolymer, 25-50 wt. % of a wax, and 7-12 wt. % of a tackifier based on a total weight of the binder. The ink layer has a breakdown strength of 30-80 kg/cm.sup.2 at 25.degree. C. The method also involves contacting an ink layer side of the thermal transfer material with a recording medium, supplying a pattern of energy from a recording head to the thermal transfer material, and separating the thermal transfer material from the recording medium to leave a transferred image on the recording medium.

Abstract: A thermal transfer material comprising a support and an ink layer disposed thereon comprising a binder and a colorant, wherein the binder comprises 40-80 wt. % of an ethylene-vinyl acetate copolymer and 20-60 wt. % of a wax based on the total weight of the binder, and the ink layer has a breakdown strength of 30-80 kg/cm.sup.2 at 25.degree. C.