JPS55100539A - Original image reading system - Google Patents
Original image reading systemInfo
- Publication number
- JPS55100539A JPS55100539A JP855379A JP855379A JPS55100539A JP S55100539 A JPS55100539 A JP S55100539A JP 855379 A JP855379 A JP 855379A JP 855379 A JP855379 A JP 855379A JP S55100539 A JPS55100539 A JP S55100539A
- Authority
- JP
- Japan
- Prior art keywords
- contact glass
- light
- photochromic
- photochromic layer
- lighting
- 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
- Light Sources And Details Of Projection-Printing Devices (AREA)
- Optical Filters (AREA)
Abstract
PURPOSE: To prevent the external leakage of lamp light for reading without using any auxiliary means by applying photochromic treatment to contact glass surface.
CONSTITUTION: Photochromic material which can realize reversible two states of non-coloring and coloring through light radiation of the wavelengths having two mutually different spectra is coated over the entire surface on top of a contact glass 2 to form a photochromic layer 3. A control box 4 is provided on the side of the contact glass 2. Then, when the original 9 is set in the specified position on the contact glass 2 surface according to its size and a control switch is pushed after this, then a lighting lamp 5 goes on and at the same time a driving part 8 operates to move a slit plate 7 which causes lighting light to radiate the entire surface of the photochromic layer 3 at a certain spectrum and causes the exposed portions thereof to form a color. This prevents the external leakage of lamp light for reading. After the copying is finished, the lighting light is radiated at a different spectrum, and the photochromic layer 3 restores a colorless state.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP855379A JPS55100539A (en) | 1979-01-26 | 1979-01-26 | Original image reading system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP855379A JPS55100539A (en) | 1979-01-26 | 1979-01-26 | Original image reading system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55100539A true JPS55100539A (en) | 1980-07-31 |
Family
ID=11696303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP855379A Pending JPS55100539A (en) | 1979-01-26 | 1979-01-26 | Original image reading system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55100539A (en) |
-
1979
- 1979-01-26 JP JP855379A patent/JPS55100539A/en active Pending
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