GB1351821A - Optical arrangements - Google Patents
Optical arrangementsInfo
- Publication number
- GB1351821A GB1351821A GB4454771A GB4454771A GB1351821A GB 1351821 A GB1351821 A GB 1351821A GB 4454771 A GB4454771 A GB 4454771A GB 4454771 A GB4454771 A GB 4454771A GB 1351821 A GB1351821 A GB 1351821A
- Authority
- GB
- United Kingdom
- Prior art keywords
- support
- shafts
- screens
- path
- optical
- 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
- G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
- G03B27/52—Details
- G03B27/522—Projection optics
- G03B27/525—Projection optics for slit exposure
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Optical Systems Of Projection Type Copiers (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Projection-Type Copiers In General (AREA)
Abstract
1351821 Optical scanning apparatus RICOH K K 24 Sept 1971 [14 Oct 1970] 44547/71 Heading G2A An optical arrangement for a photo-copying machine comprises an optical system mounted in a support 31, which system is reciprocatable along a path between an original support and a copy sheet support; first and second winding shafts 53, 54 lying at opposite ends of the path; first and second light obstructing screens 56, 55 extending from the shafts 53, 54 respectively to the support 31; and means coupling the shafts 53, 54 to pay out or wind up the screens as the support 31 moves. A belt 43 is connected to the support, which belt extends around winding shaft drive pulleys 45, 47 and is driven in response to rotation of a drive pulley 44. Springs are provided to inter-connect the pulleys 45, 47 with their respective winding shafts 53, 54 to transmit rotation thereto. The support 31 carries a light source, and the optical system contains a V-shaped reflector 32. The screens 56, 55 prevent stray light from reaching a copy sheet.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9020870A JPS4948136B1 (en) | 1970-10-14 | 1970-10-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1351821A true GB1351821A (en) | 1974-05-01 |
Family
ID=13992053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4454771A Expired GB1351821A (en) | 1970-10-14 | 1971-09-24 | Optical arrangements |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS4948136B1 (en) |
DE (1) | DE2151288C3 (en) |
FR (1) | FR2111351A5 (en) |
GB (1) | GB1351821A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2000308A (en) * | 1977-06-10 | 1979-01-04 | Eocom Corp | Optical scanning table |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3533691A (en) * | 1966-10-22 | 1970-10-13 | Ricoh Kk | Electrophotographic duplicator |
-
1970
- 1970-10-14 JP JP9020870A patent/JPS4948136B1/ja active Pending
-
1971
- 1971-09-24 GB GB4454771A patent/GB1351821A/en not_active Expired
- 1971-10-14 DE DE19712151288 patent/DE2151288C3/en not_active Expired
- 1971-10-14 FR FR7136889A patent/FR2111351A5/fr not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2000308A (en) * | 1977-06-10 | 1979-01-04 | Eocom Corp | Optical scanning table |
GB2000308B (en) * | 1977-06-10 | 1982-04-15 | Eocom Corp | Precision travelling optical table assembly |
Also Published As
Publication number | Publication date |
---|---|
DE2151288C3 (en) | 1982-01-28 |
DE2151288B2 (en) | 1981-05-21 |
FR2111351A5 (en) | 1972-06-02 |
DE2151288A1 (en) | 1972-07-20 |
JPS4948136B1 (en) | 1974-12-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |