BE903105A - Trame de contact pour la commande du contraste - Google Patents
Trame de contact pour la commande du contrasteInfo
- Publication number
- BE903105A BE903105A BE0/215495A BE215495A BE903105A BE 903105 A BE903105 A BE 903105A BE 0/215495 A BE0/215495 A BE 0/215495A BE 215495 A BE215495 A BE 215495A BE 903105 A BE903105 A BE 903105A
- Authority
- BE
- Belgium
- Prior art keywords
- screen
- contact
- contact frame
- originals
- transparency
- Prior art date
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
- G03F5/14—Screening processes; Screens therefor by contact methods
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electroluminescent Light Sources (AREA)
- Detergent Compositions (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Television Receiver Circuits (AREA)
- Photoreceptors In Electrophotography (AREA)
- Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
- Facsimile Image Signal Circuits (AREA)
- Optical Elements Other Than Lenses (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
Abstract
La trame de contact, utilisable lors de la fabrication de contre-épreuves en couleur selon le procédé à deux feuilles par diffusion, est constituée d'un support transparent comportant des éléments de trame ponctuels ou linéaires. Chaque élément de trame présente, de bord à bord, une densité constante qui, avec des originaux utilisés par réflexion, vaut entre 0,90 et 1,15 avec des originaux utilisés par transparence vaut entre 1,20 et 1,40. La densité intégrale de la trame de contact vaut, avec des originaux employés par réflexion, environ 0,30 et 0,35, avec des originaux employés par transparence, environ 0,35 à 0,40. Les éléments de trame occupent entre 40 et 50 % de la surface totale de la trame de contact.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3431250A DE3431250C1 (de) | 1984-08-24 | 1984-08-24 | Kontaktraster zur Kontraststeuerung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE903105A true BE903105A (fr) | 1985-12-16 |
Family
ID=6243843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE0/215495A BE903105A (fr) | 1984-08-24 | 1985-08-22 | Trame de contact pour la commande du contraste |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4674838A (fr) |
| JP (1) | JPS6161163A (fr) |
| AT (1) | ATA225285A (fr) |
| BE (1) | BE903105A (fr) |
| CH (1) | CH665294A5 (fr) |
| DE (1) | DE3431250C1 (fr) |
| FR (1) | FR2569483B1 (fr) |
| GB (1) | GB2163569B (fr) |
| IT (1) | IT1200711B (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL95546A0 (en) * | 1989-09-19 | 1991-06-30 | Zgc Inc | Apparatus and method for checking lens focus |
| KR100209752B1 (ko) * | 1996-05-16 | 1999-07-15 | 구본준 | 마이크로 렌즈 패턴용 마스크 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3493381A (en) * | 1966-01-27 | 1970-02-03 | Eastman Kodak Co | Halftone screens having more than one type of dot |
| US4262070A (en) * | 1980-04-18 | 1981-04-14 | Liu Hua Kuang | Method of making halftone contact screens |
-
1984
- 1984-08-24 DE DE3431250A patent/DE3431250C1/de not_active Expired
-
1985
- 1985-07-31 CH CH3324/85A patent/CH665294A5/de not_active IP Right Cessation
- 1985-07-31 AT AT0225285A patent/ATA225285A/de not_active Application Discontinuation
- 1985-08-13 IT IT21927/85A patent/IT1200711B/it active
- 1985-08-20 US US06/767,453 patent/US4674838A/en not_active Expired - Fee Related
- 1985-08-20 GB GB08520771A patent/GB2163569B/en not_active Expired
- 1985-08-21 FR FR8512568A patent/FR2569483B1/fr not_active Expired
- 1985-08-22 BE BE0/215495A patent/BE903105A/fr not_active IP Right Cessation
- 1985-08-23 JP JP60184374A patent/JPS6161163A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR2569483A1 (fr) | 1986-02-28 |
| GB2163569A (en) | 1986-02-26 |
| GB2163569B (en) | 1988-10-12 |
| US4674838A (en) | 1987-06-23 |
| ATA225285A (de) | 1992-07-15 |
| DE3431250C1 (de) | 1985-09-19 |
| CH665294A5 (de) | 1988-04-29 |
| IT1200711B (it) | 1989-01-27 |
| GB8520771D0 (en) | 1985-09-25 |
| IT8521927A0 (it) | 1985-08-13 |
| JPS6161163A (ja) | 1986-03-28 |
| FR2569483B1 (fr) | 1988-08-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RE | Patent lapsed |
Owner name: RASTER-UNION EFHA KOHINOOR G.M.B.H. ET CO. K.G. Effective date: 19920831 |