JPS6465976A - Copying device - Google Patents

Copying device

Info

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
Application number
JP62221853A
Other languages
Japanese (ja)
Inventor
Izumi Takagi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brother Industries Ltd
Original Assignee
Brother Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Brother Industries Ltd filed Critical Brother Industries Ltd
Priority to JP62221853A priority Critical patent/JPS6465976A/en
Publication of JPS6465976A publication Critical patent/JPS6465976A/en
Pending legal-status Critical Current

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.
JP62221853A 1987-09-07 1987-09-07 Copying device Pending JPS6465976A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5206595A (en) * 1991-09-10 1993-04-27 Electric Power Research Institute Advanced cable fault location

Cited By (1)

* Cited by examiner, † Cited by third party
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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