JPS5540458A - Bias developing method in printing device - Google Patents

Bias developing method in printing device

Info

Publication number
JPS5540458A
JPS5540458A JP11324578A JP11324578A JPS5540458A JP S5540458 A JPS5540458 A JP S5540458A JP 11324578 A JP11324578 A JP 11324578A JP 11324578 A JP11324578 A JP 11324578A JP S5540458 A JPS5540458 A JP S5540458A
Authority
JP
Japan
Prior art keywords
power source
developing
bias
cleaning
burden
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
JP11324578A
Other languages
Japanese (ja)
Inventor
Sumitaka Aida
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP11324578A priority Critical patent/JPS5540458A/en
Publication of JPS5540458A publication Critical patent/JPS5540458A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)
  • Developing For Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE: To prevent deposition of a large amount of developer on the entire surface and achieve the reduction in the burden of cleaning process by applying developing bias of opposite polarity while the surface whose potentials have lowered owing to dark attenuation fully passes by the developing part.
CONSTITUTION: Aside from a power source E1 for developing bias, a DC power source E2 of polarity opposite from that of said source is provided and while a natural discharging part D fully passes a developing device 4, a switch is dhanged over to the power source E2 side of the opposite polarity. Since the switch changes over to the power source E1 for bias development after the dischrage part D has passed the developing device 4, deposition of toner on one surface of the discharging part D is prevented. As a result, the burden of the cleaning part 7 is reduced and there is no likelihood of giving adverse influence to the latent image forming part owing to cleaning defects and degrading printing quality. In addition, the constitution and operation become simple.
COPYRIGHT: (C)1980,JPO&Japio
JP11324578A 1978-09-14 1978-09-14 Bias developing method in printing device Pending JPS5540458A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11324578A JPS5540458A (en) 1978-09-14 1978-09-14 Bias developing method in printing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11324578A JPS5540458A (en) 1978-09-14 1978-09-14 Bias developing method in printing device

Publications (1)

Publication Number Publication Date
JPS5540458A true JPS5540458A (en) 1980-03-21

Family

ID=14607240

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11324578A Pending JPS5540458A (en) 1978-09-14 1978-09-14 Bias developing method in printing device

Country Status (1)

Country Link
JP (1) JPS5540458A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6332572A (en) * 1986-07-25 1988-02-12 Sharp Corp Reversal developing and recording device
JPS6337365A (en) * 1986-07-31 1988-02-18 Sharp Corp Inverted image forming method
JPS6389878A (en) * 1986-10-03 1988-04-20 Canon Inc Picture recorder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6332572A (en) * 1986-07-25 1988-02-12 Sharp Corp Reversal developing and recording device
JPS6337365A (en) * 1986-07-31 1988-02-18 Sharp Corp Inverted image forming method
JPH0535868B2 (en) * 1986-07-31 1993-05-27 Sharp Kk
JPS6389878A (en) * 1986-10-03 1988-04-20 Canon Inc Picture recorder

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