GB1477949A - Apparatus for engraving printing surfaces by means of laser light - Google Patents

Apparatus for engraving printing surfaces by means of laser light

Info

Publication number
GB1477949A
GB1477949A GB3845375A GB3845375A GB1477949A GB 1477949 A GB1477949 A GB 1477949A GB 3845375 A GB3845375 A GB 3845375A GB 3845375 A GB3845375 A GB 3845375A GB 1477949 A GB1477949 A GB 1477949A
Authority
GB
United Kingdom
Prior art keywords
laser beam
laser light
printing surfaces
cross
section
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
GB3845375A
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.)
HELL R GmbH
Original Assignee
HELL R GmbH
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 HELL R GmbH filed Critical HELL R GmbH
Publication of GB1477949A publication Critical patent/GB1477949A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B23K26/073—Shaping the laser spot
    • 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
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/0823—Devices involving rotation of the workpiece
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Laser Beam Processing (AREA)

Abstract

1477949 Facsimile apparatus RUDOLF HELL GmbH 18 Sept 1975 [2 Oct 1974] 38453/75 Heading H4F [Also in Division B6] The desired energy distribution, Fig. 4, across a laser beam engraving a printing surface 1, Fig. 3, is obtained by locating an opaque or light-absorbing body 5 in the central region of the laser beam. The cross-section of body 5 is smaller than the cross-section of the laser beam, which may be optically enlarged (Fig. 8, not shown). The body 5 may be square, circular or star-shaped, and may comprise a transversely arranged mirror enclosed in a glass body (Figs. 5-8, not shown).
GB3845375A 1974-10-02 1975-09-18 Apparatus for engraving printing surfaces by means of laser light Expired GB1477949A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742446962 DE2446962B2 (en) 1974-10-02 1974-10-02 DEVICE FOR ENGRAVING PRINTING FORMS USING LASER LIGHT

Publications (1)

Publication Number Publication Date
GB1477949A true GB1477949A (en) 1977-06-29

Family

ID=5927301

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3845375A Expired GB1477949A (en) 1974-10-02 1975-09-18 Apparatus for engraving printing surfaces by means of laser light

Country Status (4)

Country Link
JP (1) JPS5161096A (en)
CH (1) CH589515A5 (en)
DE (1) DE2446962B2 (en)
GB (1) GB1477949A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125248A (en) * 1982-07-23 1984-02-29 Dainippon Screen Mfg Aperture mask for image scanning and recording apparatus
US9475149B1 (en) 2015-04-24 2016-10-25 Testrake Aviation, Inc. Optical device and method of making same

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5541247A (en) * 1978-09-18 1980-03-24 Nec Corp Laser printer
DE2907004C2 (en) * 1979-02-22 1981-06-25 GAO Gesellschaft für Automation und Organisation mbH, 8000 München Identity card and process for its production
DE3048733C2 (en) * 1980-12-23 1983-06-16 GAO Gesellschaft für Automation und Organisation mbH, 8000 München "Identity card and process for producing the same"
US5748222A (en) * 1992-06-11 1998-05-05 Zed Instruments Ltd. Laser angroxing head employing acousto-optic modulator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2125248A (en) * 1982-07-23 1984-02-29 Dainippon Screen Mfg Aperture mask for image scanning and recording apparatus
US9475149B1 (en) 2015-04-24 2016-10-25 Testrake Aviation, Inc. Optical device and method of making same

Also Published As

Publication number Publication date
DE2446962A1 (en) 1976-04-08
CH589515A5 (en) 1977-07-15
JPS5517702B2 (en) 1980-05-13
JPS5161096A (en) 1976-05-27
DE2446962B2 (en) 1978-01-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee
PCNP Patent ceased through non-payment of renewal fee