| Patent Number |
Title Of Patent |
Date Issued |
| 6433039 |
Ink jet printing with inks containing comb polymer dispersants |
August 13, 2002 |
| Disclosed is a process which comprises incorporating into an ink jet printing apparatus an ink composition which comprises water, a colorant, and a comb copolymer, and causing droplets of the ink to be ejected in an imagewise pattern onto a substrate. In a particularly preferred embo |
| 6200369 |
Ink compositions |
March 13, 2001 |
| Disclosed is an ink composition which comprises (a) water, (b) a colorant; and (c) an additive selected from the group consisting of diamido quaternary dialkyl ammonium salts, bitail quaternary tetraalkyl ammonium salts, bitail imidazolium salts, bitail biomimetic phospholipid salts, |
| 6176911 |
Ink compositions |
January 23, 2001 |
| Disclosed is an ink composition which comprises (1) water; (2) a colorant; and (3) an additive selected from the group consisting of monoalkylamido quaternary ammonium salts and mixtures thereof. |
| 6156111 |
Ink compositions |
December 5, 2000 |
| Disclosed is an ink composition which comprises (1) water; (2) a colorant; and (3) an additive selected from the group consisting of di-substituted guanidinium salts, wherein the substituents are alkyl groups, arylalkyl groups, or mixtures thereof. |
| 6048388 |
Ink compositions containing ionic liquid solvents |
April 11, 2000 |
| Disclosed is an ink composition which comprises water, a colorant, and an ionic liquid material. In a preferred embodiment, the ink is substantially free of organic solvents. Also disclosed is a process which comprises incorporating the ink composition into an ink jet printing apparatus |
| 5976231 |
Inks for ink jet printing |
November 2, 1999 |
| Disclosed is an ink composition which comprises water, an anionic dye, and a monoquaternary cationic penetrant of the formula ##STR1## wherein R.sub.1 is either a benzyl group or an alkyl group having at least about 3 carbon atoms, R.sub.2, R.sub.3, and R.sub.4 each, independently of |
| 5961705 |
Ink compositions containing oxy acids or oxy acid salts |
October 5, 1999 |
| Disclosed is an ink composition which comprises (1) water; (2) a colorant; and (3) an additive selected from the group consisting of oxy acids, oxy acid salts, and mixtures thereof. Also disclosed is a thermal ink jet printing process employing the ink. |
| 5665150 |
Dye and ink compositions |
September 9, 1997 |
| Disclosed is an ink jet printing process which comprises (1) incorporating into an ink jet printer an aqueous ink composition which comprises water, a humectant, and a colorant of the formula ##STR1## wherein X and X' each, independently of one another, are hydrogen, alkyl, halog |
| 5643357 |
Liquid crystalline ink compositions |
July 1, 1997 |
| Disclosed is an ink composition which comprises water, an oil-soluble or alcohol-soluble dye, and a surfactant, said ink exhibiting a liquid microemulsion phase at a first temperature and, at a second temperature higher than the first temperature, separating into a mixture of an aqueous |
| 5641346 |
Ink jet ink compositions and recording processes |
June 24, 1997 |
| An ink jet ink includes a colorant and a liquid component containing at least one of an epoxy and a vinyl ether. Water may also be dissolved in the liquid component. Preferably, the vinyl ether is ethylene glycol monovinyl ether. An ink jet recording process includes the steps of eje |
| 5563644 |
Ink jet printing processes with microwave drying |
October 8, 1996 |
| Disclosed is a printing process which comprises applying in imagewise fashion to a substrate an ink composition which comprises an aqueous liquid vehicle, a colorant, and a drying component selected from the group consisting of zwitterionic compounds, and subsequently exposing the su |
| 5543259 |
Developer compositions |
August 6, 1996 |
| Disclosed are dry and liquid developers suitable for the development of electrostatic latent images. The developers contain a colorant selected from the group consisting of: (a) those of Formula I ##STR1## wherein R.sub.1 is an electron withdrawing group, R.sub.2 is selected from |
| 5492559 |
Liquid crystalline microemulsion ink compositions |
February 20, 1996 |
| Disclosed is an ink composition which comprises an aqueous phase, an oil phase, an oil-soluble dye, and a surfactant, said ink exhibiting a liquid crystalline gel phase at a first temperature and a liquid microemulsion phase at a second temperature higher than the first temperature. |
| 5413630 |
Colorant and ink compositions |
May 9, 1995 |
| Disclosed are aqueous ink compositions for ink jet printing which comprises water, a humectant, and a colorant selected from the group consisting of: (a) those of Formula I ##STR1## wherein R.sub.1 is an electron withdrawing group, R.sub.2 is selected from the group consisting of |
| 5389133 |
Ink compositions for ink jet printing |
February 14, 1995 |
| Disclosed is a process for preparing an aqueous ink composition which comprises adjusting the pH of the ink with phosphorous acid or phosphite salts. Also disclosed are ink compositions prepared by this process. In certain preferred embodiments, the ink compositions can also contain |
| 5122187 |
Hot melt ink compositions |
June 16, 1992 |
| Disclosed are hot melt ink compositions suitable for ink jet printing which comprise a colorant, a binder, and a propellant selected from the group consisting of hydrazine; cyclic amines; ureas; carboxylic acids; sulfonic acids; aldehydes; ketones; hydrocarbons; esters; phenols; amides; |
| 5019166 |
Thermal ink jet compositions |
May 28, 1991 |
| A thermal ink jet printing composition comprising a dye, a liquid medium, and a surfactant selected from the group consisting of polyoxyalkylated ethers, anionic bitail fluorothio alkyls, alkyl aryl sulfonates, alkyl amine quaternary salts, and mixtures thereof. Also disclosed is a proce |
| 5006170 |
Hot melt ink compositions |
April 9, 1991 |
| Disclosed are hot melt ink compositions suitable for ink jet printing which comprise a colorant, a binder, and a propellant selected from the group consisting of hydrazine; cyclic amines; ureas; carboxylic acids; sulfonic acids; aldehydes; ketones; hydrocarbons; esters; phenols; amides; |
| 4840674 |
Ink compositions |
June 20, 1989 |
| An improved ink composition comprised of a major amount of water; an organic solvent selected from the group consisting of tetramethylene sulfone; 1,1,3,3-tetramethyl urea; 3-methyl sulfolane; and 1,3-dimethyl-2-imidazolidone; which solvent has permanently dissolved therein spirit so |
| 4608328 |
Donor for touchdown development |
August 26, 1986 |
| An electrostatographic method and apparatus for developing an electrostatic latent image on an imaging surface, comprises a charging doner member which is preferably a rotatably mounted roll closely spaced from the imaging surface at one portion and having a housing means to be filled |
| 4171274 |
Alteration of tesselated magnetic particles by fracture |
October 16, 1979 |
| A process of modification of magnetic toner for use in electrostatic development processes involving a magnetic toner without carrier is disclosed. The modified toner of the invention is effectively fused at lower temperatures. The toners of the invention are modified such that small |
| 4102305 |
Development system with electrical field generating means |
July 25, 1978 |
| An apparatus in which a latent image is developed with particles having the resistivity thereof varying as a function of the electrical field applied thereto. The electrical field generated during development is of sufficient magnitude to render the particles substantially conductive. |
