JPS6465976A - Copying device - Google Patents
Copying deviceInfo
- Publication number
- JPS6465976A JPS6465976A JP62221853A JP22185387A JPS6465976A JP S6465976 A JPS6465976 A JP S6465976A JP 62221853 A JP62221853 A JP 62221853A JP 22185387 A JP22185387 A JP 22185387A JP S6465976 A JPS6465976 A JP S6465976A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- picture
- thermal
- thermal paper
- vccd
- 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
- Facsimile Scanning Arrangements (AREA)
- Printers Characterized By Their Purpose (AREA)
- Electronic Switches (AREA)
Abstract
PURPOSE:To copy the picture of an original on a copying sheet with density included so as to improve gradation, by amplifying the minimum level of an electric signal which an image sensor has converted a picture element to a maximum level where the copying sheet does not sense and impressing a voltage on a printing head. CONSTITUTION:Voltages VCCD proportional to light quantity which respective photodetectors 91-9n have light-received are sequentially outputted from a CCD9 at the timing of a shift clock signal. The voltages VCCD are amplified in an amplifier circuit 21 and are respectively impressed on the thermal elements 221-22n of a thermal head 13. The amplifier circuit 21 outputs the maximum voltage of a range where a thermal paper 11 does not totally colored to a voltage which the thermal paper is colored with black in correspondence with reading density. Thus, the heating element 22i generates the heat proportional to the square of the impressed voltage and the picture having variable gradation is copied on the thermal paper 11 in accordance with the calorific value of the heating element 22i.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62221853A JPS6465976A (en) | 1987-09-07 | 1987-09-07 | Copying device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62221853A JPS6465976A (en) | 1987-09-07 | 1987-09-07 | Copying device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6465976A true JPS6465976A (en) | 1989-03-13 |
Family
ID=16773213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62221853A Pending JPS6465976A (en) | 1987-09-07 | 1987-09-07 | Copying device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6465976A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5206595A (en) * | 1991-09-10 | 1993-04-27 | Electric Power Research Institute | Advanced cable fault location |
-
1987
- 1987-09-07 JP JP62221853A patent/JPS6465976A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5206595A (en) * | 1991-09-10 | 1993-04-27 | Electric Power Research Institute | Advanced cable fault location |
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