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GB1300300A - Improvements in and relating to screens used in photomechanical reproduction - Google Patents

Improvements in and relating to screens used in photomechanical reproduction

Info

Publication number
GB1300300A
GB1300300A GB3191371A GB3191371A GB1300300A GB 1300300 A GB1300300 A GB 1300300A GB 3191371 A GB3191371 A GB 3191371A GB 3191371 A GB3191371 A GB 3191371A GB 1300300 A GB1300300 A GB 1300300A
Authority
GB
United Kingdom
Prior art keywords
screen
relating
screens used
interface
photomechanical reproduction
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
GB3191371A
Inventor
Alfred George Torr
Kevin William Caton Webb
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US00181468A priority Critical patent/US3737321A/en
Priority to AU34148/71A priority patent/AU3414871A/en
Priority to IT53380/71A priority patent/IT944737B/en
Priority to CA124,886A priority patent/CA960501A/en
Priority to DE19712151040 priority patent/DE2151040A1/en
Priority to NL7114153A priority patent/NL7114153A/xx
Priority to CH1506471A priority patent/CH594917A5/xx
Priority to BE774031A priority patent/BE774031A/en
Priority to FR7137177A priority patent/FR2111444A5/fr
Publication of GB1300300A publication Critical patent/GB1300300A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F5/00—Screening processes; Screens therefor
    • G03F5/02—Screening processes; Screens therefor by projection methods
    • G03F5/12—Screening processes; Screens therefor by projection methods using other screens, e.g. granulated screen

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Overhead Projectors And Projection Screens (AREA)

Abstract

1300300 Lenticular screens A G TORR 9 Sept 1971 [15 Oct 1970 7 July 1971] 49115/70 and 31913/71 Headings G2J, G2M A screen for photo-mechanical reproduction comprises a transparent sheet having an outer surface, or an interface between materials of different refractive indices, which surface or interface has smooth regular wave form undulations. As shown, the cross-section of a screen with the pattern of Fig.1 is as shown in Fig.4. The screen can be produced photographically or mechanically, and may have formations which are shaped other than hexagonally. The screen may be coloured.
GB3191371A 1970-10-15 1970-10-15 Improvements in and relating to screens used in photomechanical reproduction Expired GB1300300A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US00181468A US3737321A (en) 1970-10-15 1971-09-17 Screens used in photomechanical reproduction
AU34148/71A AU3414871A (en) 1970-10-15 1971-10-05 Improvements in and relating to screens used in photomechanical reproduction
IT53380/71A IT944737B (en) 1970-10-15 1971-10-09 IMPROVEMENT IN THE NETS FOR PHOTOMECHANICAL REPRODUCTIONS
CA124,886A CA960501A (en) 1970-10-15 1971-10-12 Screens used in photomechanical reproduction and the like
DE19712151040 DE2151040A1 (en) 1970-10-15 1971-10-13 Grid plate for photomechanical reproduction
NL7114153A NL7114153A (en) 1970-10-15 1971-10-14
CH1506471A CH594917A5 (en) 1970-10-15 1971-10-15
BE774031A BE774031A (en) 1970-10-15 1971-10-15 FRAMES FOR PHOTOMECHANICAL REPRODUCTION
FR7137177A FR2111444A5 (en) 1970-10-15 1971-10-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4911570 1970-10-15

Publications (1)

Publication Number Publication Date
GB1300300A true GB1300300A (en) 1972-12-20

Family

ID=10451196

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3191371A Expired GB1300300A (en) 1970-10-15 1970-10-15 Improvements in and relating to screens used in photomechanical reproduction

Country Status (1)

Country Link
GB (1) GB1300300A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154756A (en) * 1980-10-31 1985-09-11 Humphrey Instruments Inc Refractive optical element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154756A (en) * 1980-10-31 1985-09-11 Humphrey Instruments Inc Refractive optical element

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee