JPS5595967A - Slit exposure copying unit having image erasing function - Google Patents
Slit exposure copying unit having image erasing functionInfo
- Publication number
- JPS5595967A JPS5595967A JP368179A JP368179A JPS5595967A JP S5595967 A JPS5595967 A JP S5595967A JP 368179 A JP368179 A JP 368179A JP 368179 A JP368179 A JP 368179A JP S5595967 A JPS5595967 A JP S5595967A
- Authority
- JP
- Japan
- Prior art keywords
- image
- light
- irradiates
- spectral
- copying
- 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
Abstract
PURPOSE:To remarkably enhance operation efficiency in partially correcting a document and copying this, by coloring an original image with an ink having a specified spectral reflectivity to erase that part of the image. CONSTITUTION:Light from light source 2 irradiates original 1 and the reflected light passes between light shielding plates 12, 13, and projects the image on photosensitive drum 9. Stripe filter 14 for detecting the color to be erased, and semiconductor array 15 are provided on plate 12 to take out photoelectric signal output in accordance with the spectral characteristics of the projected image and spectral transmission characteristics of filter 14. This output controls ON and OFF of light emitting diode 29, the emitted light passes through optical fiber array 30 and irradiates drum 9, thus, permitting toner potential to be lost before an exposure step, the toner not to attach to the irradiated position, and this position to become a white ground, therefore, copying operation to be made efficiently without beeing needed to apply white paper for correction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP368179A JPS5595967A (en) | 1979-01-16 | 1979-01-16 | Slit exposure copying unit having image erasing function |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP368179A JPS5595967A (en) | 1979-01-16 | 1979-01-16 | Slit exposure copying unit having image erasing function |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5595967A true JPS5595967A (en) | 1980-07-21 |
Family
ID=11564140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP368179A Pending JPS5595967A (en) | 1979-01-16 | 1979-01-16 | Slit exposure copying unit having image erasing function |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5595967A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5756859A (en) * | 1980-09-24 | 1982-04-05 | Ricoh Co Ltd | Partial copying method of original in copying machine |
JPS57119379A (en) * | 1981-01-17 | 1982-07-24 | Ricoh Co Ltd | Detector for copying area in copying machine |
JPS57119380A (en) * | 1981-01-17 | 1982-07-24 | Ricoh Co Ltd | Detector for copying area in copying machine |
JPS57122473A (en) * | 1980-12-26 | 1982-07-30 | Konishiroku Photo Ind Co Ltd | Charge erasing device of electrophotographic copying machine |
-
1979
- 1979-01-16 JP JP368179A patent/JPS5595967A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5756859A (en) * | 1980-09-24 | 1982-04-05 | Ricoh Co Ltd | Partial copying method of original in copying machine |
JPS57122473A (en) * | 1980-12-26 | 1982-07-30 | Konishiroku Photo Ind Co Ltd | Charge erasing device of electrophotographic copying machine |
JPS57119379A (en) * | 1981-01-17 | 1982-07-24 | Ricoh Co Ltd | Detector for copying area in copying machine |
JPS57119380A (en) * | 1981-01-17 | 1982-07-24 | Ricoh Co Ltd | Detector for copying area in copying machine |
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