摘要:
A negatively charged liquid developer comprised of a nonpolar liquid, thermoplastic resin particles, pigment, a charge adjuvant, and a BAB polymer charge director wherein A and B represent the polar and nonpolar polymer segments, respectively.
摘要:
A liquid developer comprised of a nonpolar liquid, thermoplastic resin particles, polar organic additives with a dielectric constant in the range of about 20 to about 150, and soluble in the nonpolar liquid; and charge director.
摘要:
A liquid developer comprised of a liquid, thermoplastic resin particles, a nonpolar liquid soluble charge director, comprised of a quaternary ammonium block copolymer with hydroxide as the anion.
摘要:
A protective overcoating layer for an electrophotographic imaging device prevents crystallization and leaching of hole transport compounds in a charge transport layer of the imaging device. The overcoat also prevents solvent and ink contact/bending stress charge transport layer cracking. The overcoating layer contains a polyester homopolymer which contains a hole transporting compound and an aliphatic diol in the polymer chain backbone. The homopolymer can be either a meta or para hole transport compound ester linkage polyester homopolymer.
摘要:
Polyamides, particularly aromatic polyamides and mixed aromatic-aliphatic polyamides, are produced by heating various amidines or amidine derivatives to yield polymer and a volatile low molecular weight amide, such as formamide. The thermally polymerizable composition is an aromatic amidine or salt thereof, e.g. N,N-1,4-phenylene bis-(N',N'-dimethylformamidinium) terephthalate which is heat polymerizable to poly-(p-phenylene terephthalamide); or N-(p-carboxyphenyl)-N',N'-dimethyl formamidine hydrochloride which is heat polymerizable to poly-(p-benzamide).
摘要:
A process including: forming a first image on a first substrate with a liquid toner comprising a resin, a colorant, a carrier liquid, and an adhesion promoting compound; transferring the image from the first substrate to a second substrate; overcoating the image on the second substrate with a transparent overcoat layer, and treating the resulting overcoated image.
摘要:
A positively charged liquid developer comprised of a nonpolar liquid, thermoplastic resin particles, pigment, a charge director, and a charge control agent comprised of a PEO:PPO, preferably in a solid form.
摘要:
A liquid developer comprised of a nonpolar liquid with essentially no volatiles, thermoplastic resin particles, a charge adjuvant, or charge control agent, pigment, and a charge director, and wherein said volatiles are removed by heating.
摘要:
A positively charged liquid developer comprised of a nonpolar liquid, thermoplastic resin particles, pigment, a charge director, and a charge control agent comprised of a cyclodextrin or a cyclodextrin derivative containing one or more organic basic amino groups.
摘要:
A liquid developer comprised of a nonpolar liquid, thermoplastic resin particles, a charge adjuvant, pigment, and a charge director selected from the group consisting of the triblock polymers BAA', BA'A, and ABA' wherein A, A' and B represent polymer segments or blocks, the polar A block repeat units contain an alkylated or protonated ammonium charged site and the polar A' block repeat units contain an acid group of a pKa equal to or less than about 7.0, and wherein the nonpolar B block repeat units contain aliphatic hydrocarbon solubilizing groups; and wherein the A and A' block number average molecular weights range from about 200 to 120,000, and the B block number average molecular weights range from about 2,000 to 190,000; and the total number average molecular weight of said charge director is from about 2,400 to about 300,000, and the ratio of M.sub.w to M.sub.n for said charge director is 1 to 5.