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Inventor:
Ohta; Tokuya
Address:
Yokohama, JP
No. of patents:
33
Patents:












Patent Number Title Of Patent Date Issued
6357845 Leather coloring process, leather coloring apparatus and colored leather produced by such proces March 19, 2002
A leather coloring process for carrying out coloring on a natural leather, or a natural leather which has been subjected to degreasing. The coloring process is accomplished by ink-jet coloring on at least a partial area of the natural leather.
6325498 Ink tank with ink absorbing member December 4, 2001
An ink tank for storably receiving ink therein comprises a housing having an ink feeding port to allow ink to be storably received therein and fed through the ink feeding port, an ink absorbing member accommodated in the housing for retaining ink, the ink absorbing member being a porous
6224200 Ink tank with ink absorbing member having particular holes or slits May 1, 2001
An ink tank includes a housing and an ink absorbing member accommodated in the housing. The ink absorbing member is constructed using a water jet cutter. The ink absorbing member is a thermosetting foamed block having a porous three-dimensional divergent circuit network; the foamed block
6200676 Ink jet recording medium March 13, 2001
Disclosed herein is a recording medium comprising a base material, the surface of which is coated with a composition comprising, as an essential component, a polymer having a weight average molecular weight of not less than 20,000 which is obtained by reacting a polyvalent carboxylic aci
6174053 Ink tank, head cartridge and ink jet printing apparatus January 16, 2001
A printing system having an ink tank for storing ink, the ink tank having a housing having an ink feeding port formed through a first surface for feeding ink therethrough, and a second surface opposite the first. An ink absorbing member is accommodated in the housing, is a porous member
6109742 Ink tank, head cartridge and ink jet printing apparatus August 29, 2000
A length of a melamine foamed block to be accommodated in an ink tank housing as measured in the longitudinal direction is dimensioned to be larger than a length of the ink tank housing as measured in the longitudinal direction. Thus, while the foamed block is accommodated in the ink
6022383 Processes for coloring leather by an ink-jet printing method using anionic coloring agents and c February 8, 2000
A leather coloring process for carrying out coloring on a natural leather, or a natural leather which has been subjected to degreasing. The coloring process is accomplished by ink-jet coloring on at least a partial area of the natural leather.
5718793 Image forming process and printed article February 17, 1998
Disclosed herein is an image forming process, comprising the steps of:ejecting droplets of a liquid ink containing a disperse dye according to predetermined information to form an image on an ink-absorbent printing sheet;bringing the printing sheet into close contact under heat with an i
5652610 Ink tank, ink tank-integrated head cartridge having the tank and ink head constructed integrally July 29, 1997
An ink absorbing member is inserted in an ink tank housing which at least partly has a transparent portion. Used as this ink absorbing member is one having a reflection density after ink removal which is close to the reflection density of a melamine foam before ink injection. The amount
5542970 Monoazo compound and recording liquid containing the same August 6, 1996
A monoazo compound of the general formula ##STR1## wherein; Y is hydrogen, methyl, methoxy, acetylamino, or nitro, or Y, cojointly with the carbon atom located in the benzene ring B at the 3-position with respect to the N.dbd.N group, may form a benzene ring; X is acetyl, benzoyl
5447562 Ink, ink-jet recording method making use of the ink, instrument provided with the ink and produc September 5, 1995
Disclosed herein is an ink comprising a coloring material and a liquid medium, wherein the liquid medium comprises a solvent containing clusters composed of 1 to 10 molecules.
5409529 Ink, and ink-jet recording method and instrument using the same April 25, 1995
Disclosed herein is an ink comprising at least a coloring material and a liquid medium dissolving or dispersing the coloring material therein, wherein the viscosity of the ink reaches a maximum peak in a pH range of from 4 to 10.
4841037 Amino sulfonaphtholtrisazo compounds and recording liquids containing the same June 20, 1989
A naphthalene trisazo compound represented by the general formula (I) or (II): ##STR1## wherein A and B each represents a substituted or unsubstituted benzene or naphthalene ring; m represents zero or 1; and M represents an alkali metal atom, ammonium or H.Am (wherein Am represen
4756757 Recording liquid July 12, 1988
In a recording liquid comprising, as essential components, a colorant in an amount necessary to image formation, water, an a water-miscible organic solvent, said recording liquid is characterized in that the total number of colonies in the Ames test thereof is not more than four times th
4724001 Disazoic dye and recording liquid containing the same February 9, 1988
A naphthalenedisazoic dye represented by general formula (I); ##STR1## wherein Q represents ##STR2## or a naphthalene group substituted by --SO.sub.3 M; R represents a methyl group, a methoxy group, an ethoxy group; X represents a hydrogen atom, a phenyl group substituted by
4683002 Liquid composition and method for recording July 28, 1987
A liquid composition comprising a water-soluble dye is provided. The composition contains iron and silicon at a concentration of 9 ppm or less. A method for recording with liquid droplets formed from the liquid composition is also provided. Further, a water soluble dye for the liquid
4655835 Process for evaluating the solubility of a colorant April 7, 1987
In a recording liquid comprising, as essential components, a colorant in an amount necessary to image formation, water, and a water-miscible organic solvent, said recording liquid is characterized in that the total number of colonies in the Ames test thereof is not more than four times t
4655834 Recording process April 7, 1987
In a recording liquid comprising, as essential components, a colorant in an amount necessary to image formation, water, and a water-miscible organic solvent, said recording liquid is characterized in that the total number of colonies in the Ames test thereof is not more than four times t
4597794 Recording process and a recording liquid thereof July 1, 1986
In an ink-jet recording process which comprises forming droplets of an ink and recording on an image receiving material by using the droplets, said ink is prepared by dispersing fine particles of pigment into aqueous dispersion medium containing polymer having both a hydrophilic and a
4517244 Recording medium and ink jet recording paper May 14, 1985
A recording material comprises a base material containing a highly water-absorptive resin and being in the form of a film.
4426226 Recording liquid January 17, 1984
A recording liquid comprising a recording agent for giving recorded images and a liquid medium for dissolving or dispersing the recording agent, is characterized in that the recording agent comprises at least one of the compounds represented by the following formula (A) and at least one
4410899 Method for forming liquid droplets October 18, 1983
A liquid droplet is formed by producing and eliminating a bubble in a liquid in such a way that the liquid flow in the liquid conduit is not intercepted even when the bubble reaches the maximum volume.
4395288 Liquid recording medium July 26, 1983
A liquid recording medium for use in a recording process, wherein said recording medium is discharged from a discharge orifice in a recording head and spattered in the form of droplets for recording, and containing (a) a recording agent for forming recorded images and (b) a carrier liqui
4395287 Liquid recording material July 26, 1983
A liquid recording material comprises a recording agent for forming a recording image and a liquid vehicle for dissolving or dispersing said recording agent therein and is characterized in that a polyalkylene glycol having an average molecular weight of 150 to 350 (A component) and a
4373954 Recording liquid and method for producing the same February 15, 1983
A recording liquid composed of an aqueous composition containing a water-soluble dye as the recording agent comprises a total concentration of halogen ions and acid radicals containing in said composition within the range from 0.00001 to 0.5% by weight.
4368476 Ink jet recording head January 11, 1983
An ink jet recording head of the type in which ink droplets are jetted from the orifice of the head toward a recording material to effect recording on the surface of the recording material with said ink droplets, said recording head characterized in that at least the area surrounding the
4361842 Recording method using film forming liquid composition November 30, 1982
A recording method and a liquid composition for recording on a recording medium with a recording agent discharged from the discharge orifice of a recording head in the form of flying droplets by the repeated heating of a heating zone in the recording head, includes the steps of filling t
4338611 Liquid jet recording head July 6, 1982
An improvement in a structure of a liquid jet recording head having a liquid ejecting portion constructed with an orifice side end part, at the tip end of which an orifice is provided to discharge liquid therefrom, an energy acting zone communicatively connected with the orifice and wher
4325735 Recording liquid composition April 20, 1982
A recording liquid composition whose small droplets are used for recording is composed of an aqueous liquid medium containing a water-soluble dye, and the composition contains a nitrogen-containing heterocyclic ketone compound and a member selected from urea and thiourea, or a nitrog
4295889 Recording liquid composition October 20, 1981
A recording liquid composition for use in a recording system of the type in which the recording liquid composition is jetted from a small orifice in a form of droplet flying toward a recording material on which an image is to be printed, said recording liquid composition comrising, as it
4285575 Image display device August 25, 1981
An image display device comprises a cell container, at least a pair of electrodes, an electrically responsive electrochromic medium accommodated in said cell container, said electrochromic medium comprising a complexon, Fe.sup.2+ ion and at least one metal ion other than Fe.sup.2+ ion.
4281329 Liquid recording medium July 28, 1981
A liquid recording medium for use in a recording device, wherein the liquid recording medium is discharged from a discharge orifice in a recording head of the device and spattered in the form of droplets contains a carbonic acid ester compound having an aliphatic radical.
4212518 Image display device July 15, 1980
An image display device comprises in combination:a cell container,at least a pair of electrodes,an electrically responsive electrochromic medium accommodated in said cell container, said electrochromic medium comprising a complexion.










 
 
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