摘要:
An ink for ink jet printing includes submicron-sized particles in a liquid vehicle, with the submicron-sized particles including a colorant dispersed in an emulsifiable polymer resin. The polymer resin may contain a base chain, such as polyester, having hydrophilic groups, such as alkali sulfonated groups, for emulsifying the resin in water.
摘要:
Disclosed is an ink composition which comprises an aqueous liquid vehicle, a photochromic material, and a vesicle-forming lipid, wherein vesicles of the lipid are present in the ink.
摘要:
Disclosed is an ink composition which comprises an aqueous phase, an oil phase, a photochromic material, 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.
摘要:
Disclosed is a hot melt ink composition comprising (a) an ink vehicle, said ink vehicle being a solid at about 25.degree. C. and having a viscosity of from about 1 to about 20 centipoise at a temperature suitable for hot melt ink jet printing, said temperature being greater than about 45.degree. C., (b) a photochromic material, (c) an optional colorant, and (d) an optional propellant.
摘要:
An imaging system including a migration imaging member comprising a substrate and an electrically insulating softening layer adjacent the substrate, the softenable layer comprising a fracturable layer of electrically photosensitive migration marking material located substantially at or near the surface of the softenable layer spaced from the substrate, and a copolymer of styrene and ethyl acrylate in at least one layer adjacent the substrate, the copolymer comprising between about 40 and about 80 mole percent styrene, between about 20 and about 60 mole percent ethyl acrylate, the copolymer having a M.sub.n between about 4,000 and about 35,000, a M.sub.w between about 10,000 and about 80,000, a T.sub.g between about 30.degree. C. and about 75.degree. C., and a melt viscosity between about 1.times.10.sup.2 poise and about 1.times.10.sup.6 poise at 115.degree. C.The migration imaging member may be imaged by charging, imagewise exposing to activating radiation and developing with heat, solvent vapor, or solvent vapor pretreatment followed by heat. Some embodiments of the imaged member, wherein the softenable layer contains a charge transport material, may be utilized as a master in a zeroprinting process. The copolymer of styrene and ethyl acrylate may be in an adhesive layer of charge transport spacing layer between the substrate and the sofenable layer, or in the softenable layer itself. If desired, the copolymer in any of the aforesaid layers may be a terpolymer of styrene, ethyl acrylate and a copolymerizable organic acid having carbon-to-carbon unsaturation or a copolymerizable derivative of the organic acid.
摘要:
A photoconductive imaging member comprised of a supporting substrate, a hole blocking layer thereover, a photogenerating layer and a charge transport layer, and wherein the hole blocking layer is comprised of a metal oxide prepared by a sol-gel process.
摘要:
Disclosed is a compound of the formula or a mixture thereof; wherein R and R′ are the same or different, and wherein R and R′ are independently selected from an alkyl group, an arylalkyl group, or an alkylaryl group, wherein the alkyl group, the arylalkyl group, or the alkylaryl group has from about 18 to about 60 carbon atoms; and wherein m is an integer of from about 1 to about 30.
摘要:
Disclosed is a process for preparing a colorant of the formula wherein M is an atom or group of atoms capable of bonding to the central cavity of a phthalocyanine molecule, wherein axial ligands optionally can be attached to M, which comprises (a) reacting 3-n-pentadecylphenol with 4-nitrophthalonitrile in the presence of a base to form an alkylarylether adduct of phthalonitrile; and (b) reacting the alkylarylether adduct of phthalonitrile with either (i) a metal compound, or (ii) an ammonia-releasing compound in the presence of an alkanolamine solvent, or (iii) mixtures of (i) and (ii), to form the colorant.
摘要:
An electrostatographic device includes a metal halide conductive transparent layer which is free of nonuniformities. Very thin layers of metal halides are formed for imaging members by vacuum evaporation and exhibit adequate conductivity and transparency.