Ammonium Salt Patents (Class 430/528)
  • Patent number: 4304852
    Abstract: A silver halide photographic light-sensitive material is described containinga film-forming water-soluble polymer derived from a monomer including a carboxylic acid group;a compound of the formula (I) ##STR1## wherein A is ##STR2## or a chemical bond; R is a saturated or unsaturated hydrocarbon group having from 8 to 22 carbon atoms when A is a chemical bond, and a saturated or unsaturated hydrocarbon group having from 7 to 21 carbon atoms whenA is ##STR3## R.sub.5 is hydrogen, a methyl group, or an ethyl group; B is --COO.sup..crclbar. or --SO.sub.3.sup..crclbar. ; R.sub.1 and R.sub.2 are each an alkyl group or hydroxyalkyl group having from 1 to 18 carbon atoms, or a polyalkylene oxide chain group; R.sub.3 and R.sub.4 are each hydrogen or an alkyl group having from 1 to 4 carbon atoms; n is an integer of from 2 to 8; and x is 0 or 1; anda compound of the formula (II) ##STR4## wherein A, B, R.sub.1, R.sub.2, R.sub.3, R.sub.
    Type: Grant
    Filed: September 19, 1980
    Date of Patent: December 8, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Naohiko Sugimoto, Shinzo Kishimoto, Katsumi Ryoke, Masakazu Yoneyama, Nobuhisa Sekiguchi
  • Patent number: 4299903
    Abstract: This invention relates to a process for the preparation of dry positively charged toner particles, and more spceifically a polymerization process for preparing dry positively charged toner resins, containing a charge control agent, or additive which has a dual function, as a wetting agent in the polymerization process, and as a charge control agent for the toner resin, whereby the charge control agent is firmly bonded (attached) to the toner resin and is uniformly dispersed in the resin, or emulsion polymerization of a monomer material, a pigment and a charge control additive. As a result of the polymerization there is formed a dry positively charged toner resin which has attached thereto the charge control agent.
    Type: Grant
    Filed: July 3, 1980
    Date of Patent: November 10, 1981
    Assignee: Xerox Corporation
    Inventors: Christopher J. AuClair, Chin H. Lu
  • Patent number: 4294739
    Abstract: A coating composition useful in forming conductive layers comprises a conductive, water-dispersible, particulate polymer and a crosslinkable latex binder. The crosslinkable latex has a first glass transition temperature before crosslinking of substantially less than 50.degree. C. and a second glass transition temperature after crosslinking and coalescing of substantially greater than 50.degree. C. wherein the first and second glass transition temperatures differ by more than 4.degree. C. The coating composition can be coated on a variety of supports to produce conductive elements. The coating compositions are particularly useful in forming photographic elements which are resistant to the buildup of static charge and ferrotyping.
    Type: Grant
    Filed: April 26, 1979
    Date of Patent: October 13, 1981
    Assignee: Eastman Kodak Company
    Inventors: Donald A. Upson, Gerald A. Campbell, Diane E. Kestner
  • Patent number: 4291112
    Abstract: A toner composition comprised of a resin and a pigment coated with a nitrogen containing compound thereby causing a change in the charge characteristics of the pigment, the nitrogen containing compound being selected from the group consisting of(a) quaternary ammonium compounds of the formula: ##STR1## wherein R is hydrogen, hydrocarbon radicals containing from 1 to about 22 carbon atoms, or mixtures thereof, and A is an anion selected from sulfate, sulfonate, nitrate, borate, chlorate, and halogen;(b) primary, secondary, or tertiary amines of the formula: ##STR2## wherein R is an aliphatic radical containing from about 8 to about 22 carbon atoms, and R.sub.1 and R.sub.2 are hydrocarbon radicals containing from 1 to about 22 carbon atoms; and(c) an alkyl pyridinium compound, and its hydrates.
    Type: Grant
    Filed: September 11, 1978
    Date of Patent: September 22, 1981
    Assignee: Xerox Corporation
    Inventor: Chin H. Lu
  • Patent number: 4287284
    Abstract: Toner compositions comprised of a toner resin, a colorant, or pigment and an alkyl morpholinium compound of the following formula: ##STR1## wherein R.sub.1 is a hydrocarbon radical containing from about 8 to about 22 carbon atoms, R.sub.2 is hydrogen or a hydrocarbon radical containing from 1 to about 20 carbon atoms and A is an anion which in a preferred embodiment is selected from halides such as chloride, bromide, or iodide, sulphate, sulphonate, phosphate or nitrate.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: September 1, 1981
    Assignee: Xerox Corporation
    Inventors: Chin H. Lu, Peter F. Erhardt
  • Patent number: 4287286
    Abstract: Electroreprographic films comprising a support member which are capable of acquiring an electrostatic charge which on passing through a toner bath pick up unwanted toner outside the image area which is not fixed during development. The unwanted toner pick up is minimized by applying a layer of anti-static material to the otherwise uncoated back of the support.
    Type: Grant
    Filed: May 25, 1979
    Date of Patent: September 1, 1981
    Assignee: GAF Corporation
    Inventor: Herman Burwasser
  • Patent number: 4272616
    Abstract: Photographic radiation-sensitive materials having an improved antistatic property which comprise a nonionic polyoxyethylene surface active agent and at least one of a thiocyanate, iodide, perchlorate and periodate in at least one layer.
    Type: Grant
    Filed: June 7, 1979
    Date of Patent: June 9, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Shinzo Kishimoto
  • Patent number: 4251626
    Abstract: A silver halide photographic material having on a support at least one gelatin-containing layer containing as an antistatic agent a gelatin reactive surface active agent having at least one long chain hydrophobic group, at least one of a hydrophilic group selected from a cationic group, an anionic group, an amphoteric and a nonionic group, and at least one group reactive with gelatin in the molecule.
    Type: Grant
    Filed: January 25, 1980
    Date of Patent: February 17, 1981
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Junji Minamizono, Masakazu Yoneyama, Shinzo Kishimoto
  • Patent number: 4237194
    Abstract: A coating composition useful in forming conductive layers comprises a latex having water as a continuous phase and, as a dispersed phase, hydrophobic polymer particles having associated therewith a polyaniline salt semiconductor. The coating composition can be coated on a variety of supports to produce conductive elements. The coating compositions are particularly useful in forming antistatic layers for photographic elements or conducting layers for electrophotographic and electrographic elements. Also disclosed is a preferred process for preparing a latex coating composition comprising the steps of loading polymer particles with the polyaniline component of the polyaniline acid addition salt semiconductor and then acidifying the latex to form a polyaniline salt coating composition.
    Type: Grant
    Filed: February 16, 1979
    Date of Patent: December 2, 1980
    Assignee: Eastman Kodak Company
    Inventors: Donald A. Upson, David J. Steklenski
  • Patent number: 4221856
    Abstract: Toners comprised of a resin and a quaternary ammonium compound of the formula ##STR1## in which at least two R radicals are hydrocarbon radicals having from about 8 to about 22 carbon atoms and each other R is a hydrogen or hydrocarbon radical having from 1 to about 8 carbon atoms, and A is an anion for example, sulfate, sulfonate, nitrate, borate, chlorate, and the halogens such as iodide, chloride, and bromide. Methods of their formation and use in various electrophotographic imaging systems is disclosed. The quaternary ammonium compound is generally present as a coating on a pigment that is used in the toner, such pigment being for example carbon black. Toners containing the above described quaternary ammonium compounds generally result in a toner containing a positive charge thus allowing development of negative images that may be formed on photoreceptors, especially organic photoreceptors.
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: September 9, 1980
    Assignee: Xerox Corporation
    Inventor: Chin H. Lu