JPS58146174A - 原稿照明装置 - Google Patents
原稿照明装置Info
- Publication number
- JPS58146174A JPS58146174A JP57029438A JP2943882A JPS58146174A JP S58146174 A JPS58146174 A JP S58146174A JP 57029438 A JP57029438 A JP 57029438A JP 2943882 A JP2943882 A JP 2943882A JP S58146174 A JPS58146174 A JP S58146174A
- Authority
- JP
- Japan
- Prior art keywords
- screen
- light
- transmission medium
- document
- fluorescent tube
- 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.)
- Granted
Links
- 238000009792 diffusion process Methods 0.000 claims abstract description 4
- 238000003705 background correction Methods 0.000 claims description 18
- 238000005286 illumination Methods 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 abstract description 33
- 230000003287 optical effect Effects 0.000 abstract description 13
- 230000002238 attenuated effect Effects 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- 238000012937 correction Methods 0.000 description 9
- 230000004907 flux Effects 0.000 description 8
- 239000011521 glass Substances 0.000 description 8
- 238000013461 design Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000005338 frosted glass Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Facsimile Scanning Arrangements (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57029438A JPS58146174A (ja) | 1982-02-25 | 1982-02-25 | 原稿照明装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57029438A JPS58146174A (ja) | 1982-02-25 | 1982-02-25 | 原稿照明装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS58146174A true JPS58146174A (ja) | 1983-08-31 |
JPH021467B2 JPH021467B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1990-01-11 |
Family
ID=12276132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57029438A Granted JPS58146174A (ja) | 1982-02-25 | 1982-02-25 | 原稿照明装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58146174A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60224372A (ja) * | 1984-04-20 | 1985-11-08 | Sharp Corp | 透過型原稿の読取装置 |
US4812917A (en) * | 1986-03-20 | 1989-03-14 | Ricoh Company, Ltd. | Device for reducing document in size having two facing non-parallel mirrors |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5615158U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1979-07-14 | 1981-02-09 | ||
JPS56107671A (en) * | 1980-01-31 | 1981-08-26 | Nec Corp | Light quantity correction device of facsimile |
-
1982
- 1982-02-25 JP JP57029438A patent/JPS58146174A/ja active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5615158U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1979-07-14 | 1981-02-09 | ||
JPS56107671A (en) * | 1980-01-31 | 1981-08-26 | Nec Corp | Light quantity correction device of facsimile |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60224372A (ja) * | 1984-04-20 | 1985-11-08 | Sharp Corp | 透過型原稿の読取装置 |
US4812917A (en) * | 1986-03-20 | 1989-03-14 | Ricoh Company, Ltd. | Device for reducing document in size having two facing non-parallel mirrors |
Also Published As
Publication number | Publication date |
---|---|
JPH021467B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1990-01-11 |
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