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FR1455131A - Video recorder - Google Patents

Video recorder

Info

Publication number
FR1455131A
FR1455131A FR18979A FR18979A FR1455131A FR 1455131 A FR1455131 A FR 1455131A FR 18979 A FR18979 A FR 18979A FR 18979 A FR18979 A FR 18979A FR 1455131 A FR1455131 A FR 1455131A
Authority
FR
France
Prior art keywords
drum
conductors
light source
earthed
pattern
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
FR18979A
Other languages
French (fr)
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.)
Xerox Ltd
Original Assignee
Rank Xerox Ltd
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 Rank Xerox Ltd filed Critical Rank Xerox Ltd
Application granted granted Critical
Publication of FR1455131A publication Critical patent/FR1455131A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/23—Reproducing arrangements
    • H04N1/29—Reproducing arrangements involving production of an electrostatic intermediate picture
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/04036—Details of illuminating systems, e.g. lamps, reflectors
    • G03G15/04045—Details of illuminating systems, e.g. lamps, reflectors for exposing image information provided otherwise than by directly projecting the original image onto the photoconductive recording material, e.g. digital copiers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/32—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head
    • G03G15/321—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head by charge transfer onto the recording material in accordance with the image
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/32—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head
    • G03G15/326—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head by application of light, e.g. using a LED array

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)

Abstract

1,084,494. Television and facsimile picture recording. RANK XEROX Ltd. May 14, 1965 [June 1, 1964], No. 20465/65. Heading H4F. Xerographic apparatus, Fig. 2, for recording television or facsimile pictures comprises a drum 17 bearing a photoconductive layer 56, Fig. 3, supported by a dielectric layer 50 on an earthed conductive member. 51 and, including electrically separate conductors 52, 53, 54 extending parallel to the drum axis. The ends of the conductors 15 engage a brush 13 whereby video signals to be recorded may be applied to successive conductors as, the drum rotates. A light source 31 is traversed back and forth adjacent the drum, the relative rate of traverse and, drum rotation being such the light makes one traverse as each conductor is brought into use. In response to the video signals and the change of conductivity produced in each elemental area by the light source a pattern of charges is created corresponding to the television or facsimile pictures. The charges are developed to a visual pattern by known apparatus 37 and the pattern is thereafter transferred to a record strip under the action of a high potential electrode 44 and fixed thereon by a heater 46. The charge pattern on the drum is then removed by exposure of the drum to an intense light source 25 whilst the electrodes are earthed by brush 20. The electrodes are also earthed by a brush 16 in the region following scanning by light source 31. Conductors 52, 54, 56 &c. may be embedded in dielectric 50 instead of being formed on the surface as shown in Fig. 3. In a modified construction, Fig. 5 (not shown), the earthed conductive member 51 is dispensed with and each of conductors 52, 54 &c. is replaced by two conductors, one of which is earthed. As an alternative to traversing light source 31 back and forth, a scanning light system based on a mirror drum, Fig. 6 (not shown), or rocking mirror may be used. Reference is made (without given details) to a drum system in which the photoconductive layer is removable and forms the base of the final picture. Reference is also made to the application of the invention to a flat bed scanning system.
FR18979A 1964-06-01 1965-05-31 Video recorder Expired FR1455131A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US371481A US3426354A (en) 1964-06-01 1964-06-01 Electrostatic charge image recorder

Publications (1)

Publication Number Publication Date
FR1455131A true FR1455131A (en) 1966-10-14

Family

ID=23464156

Family Applications (1)

Application Number Title Priority Date Filing Date
FR18979A Expired FR1455131A (en) 1964-06-01 1965-05-31 Video recorder

Country Status (9)

Country Link
US (1) US3426354A (en)
BE (1) BE664729A (en)
CH (1) CH444906A (en)
DE (1) DE1280281B (en)
DK (1) DK115269B (en)
FR (1) FR1455131A (en)
GB (1) GB1084494A (en)
NL (1) NL6506350A (en)
SE (1) SE338117B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000944A (en) * 1975-02-18 1977-01-04 Xerox Corporation Photoreceptor for electrostatic reproduction machines with built-in electrode
US4103994A (en) * 1977-02-11 1978-08-01 Xerox Corporation Recording plate

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2588699A (en) * 1943-08-27 1952-03-11 Chester F Carlson Electrophotographic apparatus
US2618552A (en) * 1947-07-18 1952-11-18 Battelle Development Corp Development of electrophotographic images
US2618551A (en) * 1948-10-20 1952-11-18 Haloid Co Developer for electrostatic images
US2576047A (en) * 1948-10-21 1951-11-20 Battelle Development Corp Method and apparatus for printing electrically
US2777957A (en) * 1950-04-06 1957-01-15 Haloid Co Corona discharge device
US2970906A (en) * 1955-08-05 1961-02-07 Haloid Xerox Inc Xerographic plate and a process of copy-making
US2918900A (en) * 1955-08-30 1959-12-29 Haloid Xerox Inc Apparatus for xerographic development
US3015305A (en) * 1958-05-23 1962-01-02 Xerox Corp Development of electrostatic images
US3090828A (en) * 1960-03-28 1963-05-21 Itt System for large-area display of information
US3062956A (en) * 1960-04-04 1962-11-06 Xerox Corp Xerographic charging apparatus
US3199086A (en) * 1960-11-25 1965-08-03 Rahn Corp Devices exhibiting internal polarization and apparatus for and methods of utilizing the same
US3288602A (en) * 1962-04-04 1966-11-29 Xerox Corp Xerographic plate and method
BE645997A (en) * 1963-04-01
DE1252730B (en) * 1963-09-09 1967-10-26 Rank Xerox Limited, London Method and device for converting a variable voltage dependent on a video signal into an electrostatic image
US3308234A (en) * 1963-12-30 1967-03-07 Xerox Corp Facsimile recorder using thermoplastic record with photoconductive layer

Also Published As

Publication number Publication date
DE1280281B (en) 1968-10-17
DK115269B (en) 1969-09-22
GB1084494A (en) 1967-09-20
BE664729A (en) 1965-09-16
NL6506350A (en) 1965-12-02
SE338117B (en) 1971-08-30
CH444906A (en) 1967-10-15
US3426354A (en) 1969-02-04

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