GB800893A - Improvements in or relating to optical line-justification devices for photo-composition - Google Patents
Improvements in or relating to optical line-justification devices for photo-compositionInfo
- Publication number
- GB800893A GB800893A GB24792/56A GB2479256A GB800893A GB 800893 A GB800893 A GB 800893A GB 24792/56 A GB24792/56 A GB 24792/56A GB 2479256 A GB2479256 A GB 2479256A GB 800893 A GB800893 A GB 800893A
- Authority
- GB
- United Kingdom
- Prior art keywords
- prisms
- shaft
- line
- lens
- axis
- 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
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41B—MACHINES OR ACCESSORIES FOR MAKING, SETTING, OR DISTRIBUTING TYPE; TYPE; PHOTOGRAPHIC OR PHOTOELECTRIC COMPOSING DEVICES
- B41B21/00—Common details of photographic composing machines of the kinds covered in groups B41B17/00 and B41B19/00
- B41B21/16—Optical systems
Landscapes
- Mounting And Adjusting Of Optical Elements (AREA)
Abstract
800,893. Photo type composing apparatus. ATELIERS BARIQUAND & MARRE Aug. 14, 1956 [Sept. 23, 1955], No. 24792/56. Classes 97(1) and 98(1) Optical justification of the line images produced from an original by a lens system is effected by a pair of wedge prisms rotatable about axes parallel to their vertices and perpendicular to the optical axis of the lens sytem, the prisms being rotated simultaneously in opposite directions by means controlled as a function of the length of the line to be justified, the rotation of the prisms also ensuring correct page-setting. As shown in Fig. 1 the prisms P1, P2, located in the collimated or substantially collimated beam between the two objectives O1 02 are jointly rotatable in opposite directions according to the position C, J, L, of the variable and of the line of type to be copied so that the image of such end C, J or L falls at a point J1 while the image of the fixed end A of the line falls at the point A1. As shown in Fig. 4 the prisms P1 P2 are rotatable about axis passing through the axis of the lenses O1, 02 by engagement of levers 3, 4 connected thereto with pins 5, 6 pressed by springs against screws 7, 8 engaging oppositely directed threads 13, 14 on a shaft 15. The pins 5, 6 are guided in dovetail slides to move parallel to the axis of the shaft 15 rotation of which rotates the prisms in opposite directions. The shaft 15 is driven by a shaft 20 rotated by a further shaft which turns a sighting device acording to the length of the line to be justified. To vary the magnification of the lens sytem O1, O2 the lens O is mounted on a plate 28 sliding on a guide 29 under the action of a gear 37 engaging a rack 39 connected to the plate 28. The pivots of the prisms P1, P2, the objective 02 are carried by a plate 31 similarly sliding on guide 29 and connected to a follower 40 engaging a cam 38 on the same shaft as the gear 37 rotation of which therefore moves the lenses O1, O2 simultaneously to vary the magnification while maintaining the image plane stationary, the prisms P1, P2 being simultaneously moved to maintain their adjustment.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR800893X | 1955-09-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB800893A true GB800893A (en) | 1958-09-03 |
Family
ID=9241167
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24792/56A Expired GB800893A (en) | 1955-09-23 | 1956-08-14 | Improvements in or relating to optical line-justification devices for photo-composition |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB800893A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3051051A (en) * | 1958-07-11 | 1962-08-28 | Caps Ltd | Optical justifying means |
US5274489A (en) * | 1991-02-15 | 1993-12-28 | Gec-Marconi Limited | Thermal imager systems |
-
1956
- 1956-08-14 GB GB24792/56A patent/GB800893A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3051051A (en) * | 1958-07-11 | 1962-08-28 | Caps Ltd | Optical justifying means |
US5274489A (en) * | 1991-02-15 | 1993-12-28 | Gec-Marconi Limited | Thermal imager systems |
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