GB1316412A - Facsimile reproduction - Google Patents

Facsimile reproduction

Info

Publication number
GB1316412A
GB1316412A GB3298069A GB1316412DA GB1316412A GB 1316412 A GB1316412 A GB 1316412A GB 3298069 A GB3298069 A GB 3298069A GB 1316412D A GB1316412D A GB 1316412DA GB 1316412 A GB1316412 A GB 1316412A
Authority
GB
United Kingdom
Prior art keywords
laser
output
passed
split
facsimile
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
GB3298069A
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.)
Bradley D J
Original Assignee
Bradley D J
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 Bradley D J filed Critical Bradley D J
Publication of GB1316412A publication Critical patent/GB1316412A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • B23K26/066—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms by using masks
    • 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
    • H04N1/036—Details of scanning heads ; Means for illuminating the original for picture information reproduction for optical reproduction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/007—Marks, e.g. trade marks

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Lasers (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

1316412 Lasers D J BRADLEY 30 Sept 1970 [30 June 1969] 32980/69 Heading H1C [Also in Division H4] A mode locked laser beam generator for use in a facsimile reproduction apparatus, comprises a neodymium laser rod 11 cut at the Brewster angle inserted in a laser cavity and pumped by a xenon flashtube. The laser cavity is defined by two dielectric coated mirrors 12, 13. At the wavelength of the laser, 10,600 Š, the output mirror 13 has a reflectivity of about 50% and the mirror 12 has 100% reflectivity and is immersed in a saturatable dye solution cell 14 so as to produce mode locked pulses. The output from the laser is split in a beam splitter and each part is passed through a nickel sulphate attenuator cell to remove the peak power of the pulses. One part of the split laser beam is passed into a scanning unit and then focused by a lens into a spot which is scanned across an original pattern, e.g. a typescript or drawing. A detector picks up the reflected laser light and the output from the detector is used to modulate the other part of the split laser beam which is passed to a scanning unit and then focused by a lens into a spot which is scanned across a first material, e.g. carbon paper or ink-coated mylar which is evaporated on to an adjacent material, e.g. paper to build up a facsimile of the original pattern. Pressure sensitive paper may alternatively be used for building up the facsimile and the output of the laser may be monitored on an oscilloscope. The apparatus may be modified for three-dimensional, multicoloured or multi-material reproductions.
GB3298069A 1969-06-30 1969-06-30 Facsimile reproduction Expired GB1316412A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3298069 1969-06-30

Publications (1)

Publication Number Publication Date
GB1316412A true GB1316412A (en) 1973-05-09

Family

ID=10346872

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3298069A Expired GB1316412A (en) 1969-06-30 1969-06-30 Facsimile reproduction

Country Status (1)

Country Link
GB (1) GB1316412A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2304938A1 (en) * 1975-03-15 1976-10-15 Agfa Gevaert Ag METHOD AND DEVICE FOR THE MANUFACTURING OF CINEMATOGRAPHIC PROJECTION SCREENS OF THE FULL DAY AND SCREEN TYPE MANUFACTURED BY THIS PROCESS
EP0027707A1 (en) * 1979-10-20 1981-04-29 METAL BOX p.l.c. Method for preparing thin metal sheet for welding
EP0159529A2 (en) * 1984-03-30 1985-10-30 Bayer Ag Composite plastics component, incorporating modified elements
GB2189367A (en) * 1986-04-21 1987-10-21 Kanzaki Paper Mfg Co Ltd Producing a laser-printed picture

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2304938A1 (en) * 1975-03-15 1976-10-15 Agfa Gevaert Ag METHOD AND DEVICE FOR THE MANUFACTURING OF CINEMATOGRAPHIC PROJECTION SCREENS OF THE FULL DAY AND SCREEN TYPE MANUFACTURED BY THIS PROCESS
EP0027707A1 (en) * 1979-10-20 1981-04-29 METAL BOX p.l.c. Method for preparing thin metal sheet for welding
EP0159529A2 (en) * 1984-03-30 1985-10-30 Bayer Ag Composite plastics component, incorporating modified elements
EP0159529A3 (en) * 1984-03-30 1987-12-23 Bayer Ag Process for identifying plastics parts
GB2189367A (en) * 1986-04-21 1987-10-21 Kanzaki Paper Mfg Co Ltd Producing a laser-printed picture
GB2189367B (en) * 1986-04-21 1990-07-04 Kanzaki Paper Mfg Co Ltd Method for producing a laser-printed picture

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees