GB1300300A - Improvements in and relating to screens used in photomechanical reproduction - Google Patents
Improvements in and relating to screens used in photomechanical reproductionInfo
- 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
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.
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 | |
FR7137177A FR2111444A5 (en) | 1970-10-15 | 1971-10-15 | |
CH1506471A CH594917A5 (en) | 1970-10-15 | 1971-10-15 | |
BE774031A BE774031A (en) | 1970-10-15 | 1971-10-15 | FRAMES FOR PHOTOMECHANICAL REPRODUCTION |
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2154756A (en) * | 1980-10-31 | 1985-09-11 | Humphrey Instruments Inc | Refractive optical element |
-
1970
- 1970-10-15 GB GB3191371A patent/GB1300300A/en not_active Expired
Cited By (1)
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 |