GB200603A - Improvements in devices for registering photographic negatives for use with machins for producing offset press plates - Google Patents
Improvements in devices for registering photographic negatives for use with machins for producing offset press platesInfo
- Publication number
- GB200603A GB200603A GB1113022A GB1113022A GB200603A GB 200603 A GB200603 A GB 200603A GB 1113022 A GB1113022 A GB 1113022A GB 1113022 A GB1113022 A GB 1113022A GB 200603 A GB200603 A GB 200603A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chase
- negative
- blocks
- negatives
- accurately
- 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
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B27/00—Photographic printing apparatus
- G03B27/02—Exposure apparatus for contact printing
- G03B27/04—Copying apparatus without a relative movement between the original and the light source during exposure, e.g. printing frame or printing box
- G03B27/06—Copying apparatus without a relative movement between the original and the light source during exposure, e.g. printing frame or printing box for automatic repeated copying of the same original
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
Abstract
200,603. Imrie, H., (Offset Directoplate Co.). April 20, 1922. Printing-surfaces. - An may be accurately device in which negatives may be accurately registered in a plate-holder, which is subsequently transferred to a machine for producing offset press plates of the same image, comprises a base 3 having two aligned openings 5 in which slide blocks 6 carving register marks 7 and adjustable in opposite directions by a shaft 8 bearing opposite screw-threads. Guide-rods 15 prevent lateral movement of the blocks, and springs 17 prevent backlash. On the base is placed a chase 1, accurately positioned by the engagement of holes 22 in the chase with pins 20 on the base. A negative 24, which may be one of three negatives for multi-colour work, carrying register marks 25 is placed in the chase, and the blocks 6 and negative are adjusted to bring the marks 25 into register with any part of the register marks 7. The adjustment of the blocks is then noted on a scale 14. The negative is then clamped in the chase by screw clamping-members 26, and the chase is removed to a machine of known kind for making offset press plates, in which the chase is mounted in a carriage which can be accurately displaced over a sensitive press-plate to reproduce the negative in multiple thereon. With the aid of the scale reading previously noted, the second and third negatives may be mounted in the chase, in the same position as the first negative, in the production of the remaining press-plates.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1113022A GB200603A (en) | 1922-04-20 | 1922-04-20 | Improvements in devices for registering photographic negatives for use with machins for producing offset press plates |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1113022A GB200603A (en) | 1922-04-20 | 1922-04-20 | Improvements in devices for registering photographic negatives for use with machins for producing offset press plates |
Publications (1)
Publication Number | Publication Date |
---|---|
GB200603A true GB200603A (en) | 1923-07-19 |
Family
ID=9980577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1113022A Expired GB200603A (en) | 1922-04-20 | 1922-04-20 | Improvements in devices for registering photographic negatives for use with machins for producing offset press plates |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB200603A (en) |
-
1922
- 1922-04-20 GB GB1113022A patent/GB200603A/en not_active Expired
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