GB301327A - Improvements in or relating to picture and the like telegraph apparatus - Google Patents

Improvements in or relating to picture and the like telegraph apparatus

Info

Publication number
GB301327A
GB301327A GB34783/28A GB3478328A GB301327A GB 301327 A GB301327 A GB 301327A GB 34783/28 A GB34783/28 A GB 34783/28A GB 3478328 A GB3478328 A GB 3478328A GB 301327 A GB301327 A GB 301327A
Authority
GB
United Kingdom
Prior art keywords
light
picture
carrier
copying
scanned
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
GB34783/28A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co 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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB301327A publication Critical patent/GB301327A/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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/06—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using cylindrical picture-bearing surfaces, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface
    • H04N1/0664—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using cylindrical picture-bearing surfaces, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface with sub-scanning by translational movement of the picture-bearing surface
    • 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
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/032—Details of scanning heads ; Means for illuminating the original for picture information reproduction
    • 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • 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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/06—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using cylindrical picture-bearing surfaces, i.e. scanning a main-scanning line substantially perpendicular to the axis and lying in a curved cylindrical surface
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/30—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical otherwise than with constant velocity or otherwise than in pattern formed by unidirectional, straight, substantially horizontal or vertical lines
    • H04N3/34—Elemental scanning area oscillated rapidly in direction transverse to main scanning direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Facsimile Scanning Arrangements (AREA)
  • Ink Jet (AREA)
  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Abstract

301,327. Marconi's Wireless Telegraph Co., Ltd., (Assignees of Ranger, R. H.). Nov. 25, 1927, [Convention date]. Copying-telegraphs, -In a copying-telegraph the object or image is scanned first in one direction and then in another. The picture to be transmitted is fed comparatively slowly by moving endless bands 20 bearing against a fixed semi-cylindrical supporting-plate 14. The object is scanned by two ring-shaped lights 53 mounted on opposite sides of a cylindrical carrier 41 which is rotated comparatively rapidly by a drum 11 and simultaneously traversed by a cam shaft 5 with reverse spiral grooves 47. As the carrier moves in one direction one light follows a diagonal groove 15 in the supporting plate and during the reverse movement the second light follows an opposite diagonal groove 16. The active scanning light is lit through a commutator 63 on the carrier. The light refiected by the object passes through the centre of the light, a lens 54, a, reflecting prism 56, and lens system 57, 58, 59 to a photo-electric cell 60. In the receiver the photo-electric cell may be replaced by a light source controlled by a shutter, but preferably air jets acting on heat-sensitive paper are used. According to a modification, the source of light in the transmitter is fixed at the end of the rotating drum and the light is directed to the picture by a quartz cone and reflected light passes through a similar cone to a moving photoelectric cell.
GB34783/28A 1927-11-25 1928-11-26 Improvements in or relating to picture and the like telegraph apparatus Expired GB301327A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US301327XA 1927-11-25 1927-11-25

Publications (1)

Publication Number Publication Date
GB301327A true GB301327A (en) 1929-05-09

Family

ID=21852682

Family Applications (2)

Application Number Title Priority Date Filing Date
GB34783/28A Expired GB301327A (en) 1927-11-25 1928-11-26 Improvements in or relating to picture and the like telegraph apparatus
GB831/29A Expired GB303809A (en) 1927-11-25 1929-01-09 Improvements in or relating to picture and the like telegraph apparatus

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB831/29A Expired GB303809A (en) 1927-11-25 1929-01-09 Improvements in or relating to picture and the like telegraph apparatus

Country Status (4)

Country Link
BE (1) BE301327A (en)
DE (1) DE518221C (en)
GB (2) GB301327A (en)
NL (1) NL25266C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661393A (en) * 1948-11-17 1953-12-01 British Telecomm Res Ltd Mechanical scanning device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661393A (en) * 1948-11-17 1953-12-01 British Telecomm Res Ltd Mechanical scanning device

Also Published As

Publication number Publication date
NL25266C (en)
GB303809A (en) 1929-09-05
DE518221C (en) 1931-02-25
BE301327A (en)

Similar Documents

Publication Publication Date Title
US2262584A (en) Scanning apparatus
US1746407A (en) Facsimile-transmitting arrangement
GB1405058A (en) Document copying apparatus
GB301327A (en) Improvements in or relating to picture and the like telegraph apparatus
US1925814A (en) Continuous facsimile transmission system
GB389073A (en) Improvements in and relating to picture transmission apparatus
US2548783A (en) Color facsimile scanning device
GB1446932A (en) Scanning sysems for copying machines
GB276399A (en) Improvements in or relating to picture telegraphy and the like
GB1438137A (en) Copying machines
US1800000A (en) Wireless picture transmission
US2319898A (en) Telephoto method and apparatus
US2215806A (en) Electrolytic facsimile system
GB1254141A (en) Film examining apparatus
US2176442A (en) Signal producing means
GB311711A (en) Improvements relating to copying telegraph systems
US2246721A (en) Phasing arrangement for telefacsimile machines
US2404566A (en) Telephoto system
GB354252A (en) Improvements in or relating to picture and the like transmission systems
GB809483A (en) Facsimile optical scanning system
GB1365646A (en) Apparatus for line by line photoelectric scanning of data media
US2466221A (en) High-speed facsimile synchronizing system
US1740834A (en) Cross-screen picture-transmitting system
GB308277A (en)
GB306961A (en) Apparatus for effecting the distant transmission and the reproduction of images