GB654931A - Process for the manufacture of photographic outline images and material for use therewith - Google Patents
Process for the manufacture of photographic outline images and material for use therewithInfo
- Publication number
- GB654931A GB654931A GB24779/46A GB2477946A GB654931A GB 654931 A GB654931 A GB 654931A GB 24779/46 A GB24779/46 A GB 24779/46A GB 2477946 A GB2477946 A GB 2477946A GB 654931 A GB654931 A GB 654931A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- images
- upper layer
- development
- negative
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
- B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
- B60T11/16—Master control, e.g. master cylinders
- B60T11/165—Single master cylinders for pressurised systems
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
654,931. Photographic outline images especially for photomechanical purposes; photographic materials. GEVAERT PHOTO-PRODUCTEN N.V. Aug. 20, 1946, No. 24779. [Class 98 (ii)] Outline images e are produced photographically by exposing a two-layer silver halide emulsion material, the upper layer u being separable, developing to produce negative images a, b, in the two layers u, l, forming a positive image of said negative image in at least the lower layer l, followed by removing the upper layer either before or after fixing the positive images. The positive image d in the lower layer may be formed either simultaneously with development of the negative images a, b by diffusion development, as described in Specifications 614,155, 654,630, [Group IV (b)], and 654,631, or by subsequently re-exposing the developed negative with diffuse light to yield on developing registered positive images c, d in both layers. The lower layer of the two-layer material used when diffusion development is employed contains development nucleii of the kind employed in physical development processes around which the unexposed silver halide which differs from the upper layer crystallizes as colloidal silver. The upper layer may include sodium bisulphite so as to be less hardened than the lower layer when this is treated with formaldehyde, and hence remains soluble in warm water, or the upper and lower layers may be separated by a stripping layer. Screened outline images may be produced by exposing beneath a screen the upper layer only of the material either before or after the imagewise exposure by a suitable choice of exposure time; or by sensitizing the upper layer only to green light and printing the screen with green light; and treating the combined negative images as before so that on removing the upper layer u by dissolving it in warm water or stripping it a screened contour image e, g, Fig. 6, remains in the hardened lower layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE475465D BE475465A (en) | 1946-08-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT676834X | 1949-05-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB654931A true GB654931A (en) | 1951-07-04 |
Family
ID=11304467
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24779/46A Expired GB654931A (en) | 1946-08-20 | 1946-08-20 | Process for the manufacture of photographic outline images and material for use therewith |
| GB10925/50A Expired GB676834A (en) | 1949-05-04 | 1950-05-03 | Improvements relating to hydraulic pressure transmission systems |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10925/50A Expired GB676834A (en) | 1949-05-04 | 1950-05-03 | Improvements relating to hydraulic pressure transmission systems |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE495465A (en) |
| DE (1) | DE816790C (en) |
| FR (2) | FR952197A (en) |
| GB (2) | GB654931A (en) |
| NL (1) | NL67533C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE542116A (en) * | 1954-10-20 | |||
| EP0312673B1 (en) * | 1987-10-19 | 1991-01-02 | Bendix Espana S.A. | Hydraulic pressure generator |
-
0
- BE BE495465D patent/BE495465A/xx unknown
- NL NL67533D patent/NL67533C/xx active
-
1946
- 1946-08-20 GB GB24779/46A patent/GB654931A/en not_active Expired
-
1947
- 1947-08-20 FR FR952197D patent/FR952197A/en not_active Expired
-
1950
- 1950-05-03 DE DEF1366A patent/DE816790C/en not_active Expired
- 1950-05-03 GB GB10925/50A patent/GB676834A/en not_active Expired
- 1950-05-04 FR FR1018082D patent/FR1018082A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1018082A (en) | 1952-12-26 |
| GB676834A (en) | 1952-08-06 |
| NL67533C (en) | |
| DE816790C (en) | 1951-10-11 |
| BE495465A (en) | |
| FR952197A (en) | 1949-11-10 |
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