GB1007582A - Improvements in or relating to electrophotography - Google Patents

Improvements in or relating to electrophotography

Info

Publication number
GB1007582A
GB1007582A GB15255/62A GB1525562A GB1007582A GB 1007582 A GB1007582 A GB 1007582A GB 15255/62 A GB15255/62 A GB 15255/62A GB 1525562 A GB1525562 A GB 1525562A GB 1007582 A GB1007582 A GB 1007582A
Authority
GB
United Kingdom
Prior art keywords
silver
alkyl groups
hydrogen
compounds
aminoalkanethiols
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB15255/62A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of GB1007582A publication Critical patent/GB1007582A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G17/00Electrographic processes using patterns other than charge patterns, e.g. an electric conductivity pattern; Processes involving a migration, e.g. photoelectrophoresis, photoelectrosolography; Processes involving a selective transfer, e.g. electrophoto-adhesive processes; Apparatus essentially involving a single such process
    • G03G17/02Electrographic processes using patterns other than charge patterns, e.g. an electric conductivity pattern; Processes involving a migration, e.g. photoelectrophoresis, photoelectrosolography; Processes involving a selective transfer, e.g. electrophoto-adhesive processes; Apparatus essentially involving a single such process with electrolytic development

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

An electrolyte for the development of a visible image on a photoconductive layer, which has been or is being exposed to a light image, by cathodic deposition of silver and/or silver sulphide or oxide, comprises an aqueous solution containing silver ions complexed with one or more o -aminoalkanethiols or oligomers thereof of the formula <FORM:1007582/C6-C7/1> where R and R1 are each hydrogen; alkyl groups which may be substituted with hydroxyl, amino, alkoxy, or further alkyl groups; alkenyl groups; or cycloalkyl groups such that in all cases neither R nor R1 contains more than 6 carbon atoms; or R and R1 form together with the nitrogen atom a 5- or 6-membered heterocyclic ring: R2 is hydrogen or hydroxymethyl; p is 1, 2 or 3; and n lies between 1 and 7. The solution which preferably has a pAg of 7 to 11.5, provided by soluble silver salts or by adding insoluble silver compounds to a solution of the complexing agent, may also contain 3-5% of calcium or magnesium acetate together with acetic acid and may be adjusted to pH 6 to 8 with 2-aminoethanol. The applied potential is preferably from 30 to 80 volts. In examples using a Zn-O-inresin photoconductive layer, the applied potential is 60 volts. Specification 1,007,581 is referred to.ALSO:o -Aminoalkanethiols of the general formula <FORM:1007582/C2/1> where R and R1 are each hydrogen atoms; alkyl groups which may be substituted by hydroxyl, amino, alkoxy, or further alkyl groups; an alkenyl group; or a cycloalkyl group; and neither R nor R1 contains more than six carbon atoms; or R and R1 form together with the nitrogen atom a 5- or 6-membered heterocyclic ring such as a pyrollyl, morpholino, piperidino, piperazino, or N-methylpiperazino ring: R2 is hydrogen or hydroxymethyl; p is 1, 2 or 3; and n lies between 1 and 7 are prepared from the corresponding amine (R)(R1)NH by the reaction <FORM:1007582/C2/2> effected by refluxing a non-polar solvent mixture of the reactants. Different molar proportions and the oligomers produced for o -amino-ethanethiols are given in Table 1 of the Specification, compounds having a value of n which is an integer being obtained by fractional distillation of the reaction product. Complexes are formed by adding the compounds to distilled water solutions containing silver ions or adding water-insoluble silver compounds to solutions of the o -aminoalkanethiols. Specification 1,007,581 is referred to.
GB15255/62A 1961-06-14 1962-04-19 Improvements in or relating to electrophotography Expired GB1007582A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US117125A US3072542A (en) 1961-06-14 1961-06-14 Single step direct image forming electrolytic developer for photoconductographic processing

Publications (1)

Publication Number Publication Date
GB1007582A true GB1007582A (en) 1965-10-13

Family

ID=22371098

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15255/62A Expired GB1007582A (en) 1961-06-14 1962-04-19 Improvements in or relating to electrophotography

Country Status (2)

Country Link
US (1) US3072542A (en)
GB (1) GB1007582A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3326684A (en) * 1962-04-06 1967-06-20 Fuji Photo Film Co Ltd Method for stabilizing developed photosensitive materials
US3130655A (en) * 1963-01-21 1964-04-28 Minnesota Mining & Mfg Photographic apparatus
US3165451A (en) * 1962-08-27 1965-01-12 Phillips Petroleum Co Recovery of amino-substituted alkanethiols by distillation with a solvent
US3502727A (en) * 1966-01-13 1970-03-24 Phillips Petroleum Co Amino-substituted mercapto compounds and their preparation by the reaction of aminothiosulfuric acids and aziridines and subsequent hydrolysis
US3901697A (en) * 1971-10-04 1975-08-26 Xerox Corp Manifold imaging process using electrically photosensitive material subject to light fatigue

Also Published As

Publication number Publication date
US3072542A (en) 1963-01-08

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