JPS60247263A - Original density reader - Google Patents
Original density readerInfo
- Publication number
- JPS60247263A JPS60247263A JP59264941A JP26494184A JPS60247263A JP S60247263 A JPS60247263 A JP S60247263A JP 59264941 A JP59264941 A JP 59264941A JP 26494184 A JP26494184 A JP 26494184A JP S60247263 A JPS60247263 A JP S60247263A
- Authority
- JP
- Japan
- Prior art keywords
- original
- light
- read
- dark
- mirror
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
- G03G15/5025—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the original characteristics, e.g. contrast, density
Abstract
PURPOSE:To read exactly the density of an original with simple constitution by constituting integrally a light emitting means, photodetecting means and control means and making these means manually movable. CONSTITUTION:A light source 51 lights up when an operator directs the tip 21' of a light pen toward the bright part of the original 23 and pushes a read switch 58 for the image density of the bright part. The light thereof irradiates the original 23 through a condenser lens 52, a half mirror 53 and a lens system 54. The reflected light is reflected by the mirror 53 and is made incident through a mirror 55 and an aperture 56 to a photodetector 56. The output thereof is inputted via an amplifier, multiplexer and analog-to-digital converter to a processing circuit (control means), by which the original density is read. The image density in the dark part is similarly read when the operator directs similarly the pen 21 toward the dark part of the original and lights the light source 51 by pushing a read switch 59 for the image in the dark part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59264941A JPS60247263A (en) | 1984-12-14 | 1984-12-14 | Original density reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59264941A JPS60247263A (en) | 1984-12-14 | 1984-12-14 | Original density reader |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date | |
|---|---|---|---|---|
| JP15098877A Division JPS5483437A (en) | 1977-12-15 | 1977-12-15 | Electrophotographic copying apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60247263A true JPS60247263A (en) | 1985-12-06 |
Family
ID=17410308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59264941A Pending JPS60247263A (en) | 1984-12-14 | 1984-12-14 | Original density reader |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60247263A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62177685A (en) * | 1986-01-30 | 1987-08-04 | Nec Corp | Optical information reader |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5183720A (en) * | 1975-01-20 | 1976-07-22 | Nippon Telegraph & Telephone |
-
1984
- 1984-12-14 JP JP59264941A patent/JPS60247263A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5183720A (en) * | 1975-01-20 | 1976-07-22 | Nippon Telegraph & Telephone |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62177685A (en) * | 1986-01-30 | 1987-08-04 | Nec Corp | Optical information reader |
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