JPS55120048A - Recording density control method in electrophotographic type printer - Google Patents

Recording density control method in electrophotographic type printer

Info

Publication number
JPS55120048A
JPS55120048A JP2616679A JP2616679A JPS55120048A JP S55120048 A JPS55120048 A JP S55120048A JP 2616679 A JP2616679 A JP 2616679A JP 2616679 A JP2616679 A JP 2616679A JP S55120048 A JPS55120048 A JP S55120048A
Authority
JP
Japan
Prior art keywords
recording density
control method
drum
charge voltage
density control
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
JP2616679A
Other languages
Japanese (ja)
Inventor
Hiroyuki Hoshino
Kazuyoshi Tateishi
Isao Fujimoto
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP2616679A priority Critical patent/JPS55120048A/en
Publication of JPS55120048A publication Critical patent/JPS55120048A/en
Pending legal-status Critical Current

Links

Landscapes

  • Combination Of More Than One Step In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)

Abstract

PURPOSE: To make possible the controlling of stable recording density with a simple mechanism by controlling the charge voltage of photoreceptor.
CONSTITUTION: A photosensitive drum 1 is charged by corona discharge and light patterns are radiated on the drum 1 according to signals to form electrostatic latent images. After these images are developed, they are transferred onto recording paper 7 by transfer corona 6, whereby recording is accomplished. Here, the grid voltage of a corona charger 2 with mesh-form grid is controlled to change the grid voltage by making use of the fact that the charge voltage of the drum 1 may be changed and the intensity of the electrostatic latent images after the light radaition is proportional to the charge voltage, whereby the recording density may be controlled.
COPYRIGHT: (C)1980,JPO&Japio
JP2616679A 1979-03-08 1979-03-08 Recording density control method in electrophotographic type printer Pending JPS55120048A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2616679A JPS55120048A (en) 1979-03-08 1979-03-08 Recording density control method in electrophotographic type printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2616679A JPS55120048A (en) 1979-03-08 1979-03-08 Recording density control method in electrophotographic type printer

Publications (1)

Publication Number Publication Date
JPS55120048A true JPS55120048A (en) 1980-09-16

Family

ID=12185953

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2616679A Pending JPS55120048A (en) 1979-03-08 1979-03-08 Recording density control method in electrophotographic type printer

Country Status (1)

Country Link
JP (1) JPS55120048A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833266A (en) * 1981-08-22 1983-02-26 Minolta Camera Co Ltd Electrophotographic copying machine
US4603964A (en) * 1984-10-22 1986-08-05 Xerox Corporation Photoreceptor charging scorotron

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5092141A (en) * 1973-12-13 1975-07-23
JPS511132A (en) * 1974-06-24 1976-01-07 Canon Kk
JPS5134730A (en) * 1974-07-09 1976-03-24 Plessey Handel Investment Ag
JPS5147436A (en) * 1974-10-21 1976-04-23 Ricoh Kk

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5092141A (en) * 1973-12-13 1975-07-23
JPS511132A (en) * 1974-06-24 1976-01-07 Canon Kk
JPS5134730A (en) * 1974-07-09 1976-03-24 Plessey Handel Investment Ag
JPS5147436A (en) * 1974-10-21 1976-04-23 Ricoh Kk

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833266A (en) * 1981-08-22 1983-02-26 Minolta Camera Co Ltd Electrophotographic copying machine
US4603964A (en) * 1984-10-22 1986-08-05 Xerox Corporation Photoreceptor charging scorotron

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