DE2234818B2 - - Google Patents

Info

Publication number
DE2234818B2
DE2234818B2 DE19722234818 DE2234818A DE2234818B2 DE 2234818 B2 DE2234818 B2 DE 2234818B2 DE 19722234818 DE19722234818 DE 19722234818 DE 2234818 A DE2234818 A DE 2234818A DE 2234818 B2 DE2234818 B2 DE 2234818B2
Authority
DE
Germany
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.)
Granted
Application number
DE19722234818
Other languages
German (de)
Other versions
DE2234818C3 (en
DE2234818A1 (en
Inventor
Werner 8121 Wielenbach Obrecht
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.)
Gao Gesellschaft fur Automation und Organisation Mbh 8000 Muenchen
Original Assignee
Gao Gesellschaft fur Automation und Organisation Mbh 8000 Muenchen
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 Gao Gesellschaft fur Automation und Organisation Mbh 8000 Muenchen filed Critical Gao Gesellschaft fur Automation und Organisation Mbh 8000 Muenchen
Publication of DE2234818A1 publication Critical patent/DE2234818A1/en
Publication of DE2234818B2 publication Critical patent/DE2234818B2/de
Application granted granted Critical
Publication of DE2234818C3 publication Critical patent/DE2234818C3/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/956—Inspecting patterns on the surface of objects

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
DE19722234818 1971-07-30 1972-07-15 Device for the detection of defects in paper or paper webs Expired DE2234818C3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT665271A AT338544B (en) 1971-07-30 1971-07-30 DEVICE FOR DETECTING DEFECTS IN PAPER TRAILS

Publications (3)

Publication Number Publication Date
DE2234818A1 DE2234818A1 (en) 1973-01-25
DE2234818B2 true DE2234818B2 (en) 1974-05-30
DE2234818C3 DE2234818C3 (en) 1975-01-16

Family

ID=3588462

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19722234818 Expired DE2234818C3 (en) 1971-07-30 1972-07-15 Device for the detection of defects in paper or paper webs

Country Status (5)

Country Link
AT (1) AT338544B (en)
DE (1) DE2234818C3 (en)
FR (1) FR2149120A5 (en)
GB (1) GB1380452A (en)
IT (1) IT963349B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH608628A5 (en) * 1975-11-21 1979-01-15 Sick Optik Elektronik Erwin
US4512662A (en) * 1981-07-06 1985-04-23 Tobias Philip E Plate scanner for printing plates
DE3713279C2 (en) * 1987-04-18 1994-01-20 Laser Sorter Gmbh Process for the detection of dimensional errors and / or the distortion of paper webs or format papers
DE4232550A1 (en) * 1992-09-29 1994-03-31 Laser Sorter Gmbh Measuring sizes of defects, esp. holes in materials - detecting pulsed light of varying intensity passing through or reflected by material
DE4232538A1 (en) * 1992-09-29 1994-03-31 Laser Sorter Gmbh Testing moving, opaque material paths for the presence of holes - detecting light passing through material from transmitting to reception diodes
CN109596623B (en) * 2018-12-21 2021-07-06 无锡先导智能装备股份有限公司 Defect detection method and device

Also Published As

Publication number Publication date
GB1380452A (en) 1975-01-15
IT963349B (en) 1974-01-10
ATA665271A (en) 1976-12-15
FR2149120A5 (en) 1973-03-23
DE2234818C3 (en) 1975-01-16
DE2234818A1 (en) 1973-01-25
AT338544B (en) 1977-08-25

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
EHJ Ceased/non-payment of the annual fee