JPH0173856U - - Google Patents
Info
- Publication number
- JPH0173856U JPH0173856U JP1987169485U JP16948587U JPH0173856U JP H0173856 U JPH0173856 U JP H0173856U JP 1987169485 U JP1987169485 U JP 1987169485U JP 16948587 U JP16948587 U JP 16948587U JP H0173856 U JPH0173856 U JP H0173856U
- Authority
- JP
- Japan
- Prior art keywords
- light
- shielding film
- optical system
- projection optical
- variable magnification
- 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.)
- Pending
Links
Landscapes
- Exposure Or Original Feeding In Electrophotography (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987169485U JPH0173856U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1987-11-04 | 1987-11-04 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987169485U JPH0173856U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1987-11-04 | 1987-11-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0173856U true JPH0173856U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1989-05-18 |
Family
ID=31459588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987169485U Pending JPH0173856U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1987-11-04 | 1987-11-04 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0173856U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4998245A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1973-01-22 | 1974-09-17 | ||
| JPS49123042A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1973-03-27 | 1974-11-25 | ||
| JPS5517119A (en) * | 1978-07-21 | 1980-02-06 | Ricoh Co Ltd | Variable magnifying power copying apparatus |
| JPS5737371A (en) * | 1980-08-15 | 1982-03-01 | Canon Inc | Z-shaped optical-path optical system |
| JPS6024539A (ja) * | 1983-07-21 | 1985-02-07 | Toshiba Corp | 光学装置 |
-
1987
- 1987-11-04 JP JP1987169485U patent/JPH0173856U/ja active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4998245A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1973-01-22 | 1974-09-17 | ||
| JPS49123042A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1973-03-27 | 1974-11-25 | ||
| JPS5517119A (en) * | 1978-07-21 | 1980-02-06 | Ricoh Co Ltd | Variable magnifying power copying apparatus |
| JPS5737371A (en) * | 1980-08-15 | 1982-03-01 | Canon Inc | Z-shaped optical-path optical system |
| JPS6024539A (ja) * | 1983-07-21 | 1985-02-07 | Toshiba Corp | 光学装置 |