IT1160010B - Double transfer electrophotographic appts. - with photoconducting layer on first roll transferring to dielectric layer on second roll via air gap - Google Patents

Double transfer electrophotographic appts. - with photoconducting layer on first roll transferring to dielectric layer on second roll via air gap

Info

Publication number
IT1160010B
IT1160010B IT2909678A IT2909678A IT1160010B IT 1160010 B IT1160010 B IT 1160010B IT 2909678 A IT2909678 A IT 2909678A IT 2909678 A IT2909678 A IT 2909678A IT 1160010 B IT1160010 B IT 1160010B
Authority
IT
Italy
Prior art keywords
roll
layer
photoconducting
image
appts
Prior art date
Application number
IT2909678A
Other languages
Italian (it)
Other versions
IT7829096A0 (en
Original Assignee
Dennison Mfg Co
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
Priority claimed from US05/925,667 external-priority patent/US4160257A/en
Application filed by Dennison Mfg Co filed Critical Dennison Mfg Co
Publication of IT7829096A0 publication Critical patent/IT7829096A0/en
Application granted granted Critical
Publication of IT1160010B publication Critical patent/IT1160010B/en

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Landscapes

  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)

Abstract

Electrophotographic appts. for double transfer of images comprises a photoconducting component, typically a roll possessing a photoconducting surface layer and an electrically conducting inner layer. The outer, photoconducting layer is uniformly charged by a charging unit. The thus charged layer is illuminated with a light-shadow pattern representing the original, this is done by selectively discharging the already charged surface layer. A dielectric component, typically a second roll has an electrically insulating surface and a conducting substrate, this receives the latent electrostatic image by ionisation of air in the gap between the two rolls, so that the image is transferred to the second roll. This image is then toned by a toner device to make it visible. The toned image is then transferred onto the receiving sheet. Used as a double-transfer electrophotographic device or as an electrostatic transfer printer.
IT2909678A 1977-10-25 1978-10-25 Double transfer electrophotographic appts. - with photoconducting layer on first roll transferring to dielectric layer on second roll via air gap IT1160010B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US84491377A 1977-10-25 1977-10-25
US87384878A 1978-01-30 1978-01-30
US05/925,667 US4160257A (en) 1978-07-17 1978-07-17 Three electrode system in the generation of electrostatic images
US93972978A 1978-09-05 1978-09-05

Publications (2)

Publication Number Publication Date
IT7829096A0 IT7829096A0 (en) 1978-10-25
IT1160010B true IT1160010B (en) 1987-03-04

Family

ID=27505898

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2909678A IT1160010B (en) 1977-10-25 1978-10-25 Double transfer electrophotographic appts. - with photoconducting layer on first roll transferring to dielectric layer on second roll via air gap

Country Status (1)

Country Link
IT (1) IT1160010B (en)

Also Published As

Publication number Publication date
IT7829096A0 (en) 1978-10-25

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