JPS56161529A - Copying machine provided with automatic exposure controller - Google Patents
Copying machine provided with automatic exposure controllerInfo
- Publication number
- JPS56161529A JPS56161529A JP6459880A JP6459880A JPS56161529A JP S56161529 A JPS56161529 A JP S56161529A JP 6459880 A JP6459880 A JP 6459880A JP 6459880 A JP6459880 A JP 6459880A JP S56161529 A JPS56161529 A JP S56161529A
- Authority
- JP
- Japan
- Prior art keywords
- photosensitive paper
- transmittance
- original
- superposed
- copying machine
- 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
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B27/00—Photographic printing apparatus
- G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Exposure In Printing And Copying (AREA)
Abstract
PURPOSE:To make a titled device easy to operate by measuring the transmittance of an original while it is held superposed with photosensitive paper, and obtaining correct exposure based on this process. CONSTITUTION:An original 1 and photosensitive paper 2 are superposed and are inserted into a copying machine, and its transmittance is measured. On the other hand, a photosensitive paper selecting switch plate provided with selecting switches SW1-SW3 corresponding to the sensitivity of the photosensitive paper is provided, and the light transmitted through the superposed sheets of the original 1 and the photosensitive paper 2 is put into a photodetector 4. The output of this photodetector 4 is converted to a digital signal with an A/D converter and is inputted to an input part. In an arithmetic part, the signal from the input part is received, and the transmittance of the photosensitive paper corresponding to the switching SW is drawn out from the storage part, and is operated with the signal from the photodetecting part, whereby the transmittance of only the original 1 is obtained. Based on the results of the operation thereof, the speed of, for example, a motor for conveyance and the quantity of light of an exposure lamp is changed by way of a control part.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6459880A JPS56161529A (en) | 1980-05-15 | 1980-05-15 | Copying machine provided with automatic exposure controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6459880A JPS56161529A (en) | 1980-05-15 | 1980-05-15 | Copying machine provided with automatic exposure controller |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56161529A true JPS56161529A (en) | 1981-12-11 |
Family
ID=13262843
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6459880A Pending JPS56161529A (en) | 1980-05-15 | 1980-05-15 | Copying machine provided with automatic exposure controller |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56161529A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58186737A (en) * | 1982-04-27 | 1983-10-31 | Copyer Co Ltd | Automatic exposure quantity controlling device of copying machine |
JPS58200229A (en) * | 1982-05-18 | 1983-11-21 | Copyer Co Ltd | Controller for diazo copying machine |
JPS58207036A (en) * | 1982-05-28 | 1983-12-02 | Copyer Co Ltd | Automatic exposure adjusting device of copying machine |
JPS595235A (en) * | 1982-07-01 | 1984-01-12 | Copyer Co Ltd | Automatic printing control device in diazo type copying machine |
JPS5965833A (en) * | 1982-10-07 | 1984-04-14 | Copyer Co Ltd | Control device for printing density of diazo copying machine |
-
1980
- 1980-05-15 JP JP6459880A patent/JPS56161529A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58186737A (en) * | 1982-04-27 | 1983-10-31 | Copyer Co Ltd | Automatic exposure quantity controlling device of copying machine |
JPS58200229A (en) * | 1982-05-18 | 1983-11-21 | Copyer Co Ltd | Controller for diazo copying machine |
JPS58207036A (en) * | 1982-05-28 | 1983-12-02 | Copyer Co Ltd | Automatic exposure adjusting device of copying machine |
JPS595235A (en) * | 1982-07-01 | 1984-01-12 | Copyer Co Ltd | Automatic printing control device in diazo type copying machine |
JPS5965833A (en) * | 1982-10-07 | 1984-04-14 | Copyer Co Ltd | Control device for printing density of diazo copying machine |
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