Invention Grant
- Patent Title: Polarity reversal electrophotography
- Patent Title (中): 极性反转电子显微镜
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Application No.: US3677751DApplication Date: 1969-11-14
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Publication No.: US3677751APublication Date: 1972-07-18
- Inventor: OHTA WASABURO , SAKAI KATSUO
- Applicant: RICOH KK
- Assignee: Ricoh Kk
- Current Assignee: Ricoh Kk
- Priority: JP8789168 1968-11-30
- Main IPC: G03G13/04
- IPC: G03G13/04 ; G03G15/22 ; G03G13/22
Abstract:
D R A W I N G
AN ELECTROPHOTOGRAPHY METHOD WHEREIN A PHOTOSENSITIVE LAYER IS CHARGED UP IN THE DARK, THE PHOTOSENSITIVE LAYER BEING OVERCOATED BY AN INSULATOR LAYER, AND A CHARGE OF THE POLARITY OPPOSITE TO THAT OF THE INITIAL CHARGE IS APPLIED ON THE INSULATOR LAYER IN A QUANTITU LESS THAN THAT OF THE INITIAL CHARGE, AND THEREAFTER, THE ELECTRIC POLARITY AT THE SPOTS CORRESPONDING TO THE LIGHT AND DARK SPOTS OF AN ORIGINAL IS REVERSED BY AN IMAGE LIGHT PROJECTION.
AN ELECTROPHOTOGRAPHY METHOD WHEREIN A PHOTOSENSITIVE LAYER IS CHARGED UP IN THE DARK, THE PHOTOSENSITIVE LAYER BEING OVERCOATED BY AN INSULATOR LAYER, AND A CHARGE OF THE POLARITY OPPOSITE TO THAT OF THE INITIAL CHARGE IS APPLIED ON THE INSULATOR LAYER IN A QUANTITU LESS THAN THAT OF THE INITIAL CHARGE, AND THEREAFTER, THE ELECTRIC POLARITY AT THE SPOTS CORRESPONDING TO THE LIGHT AND DARK SPOTS OF AN ORIGINAL IS REVERSED BY AN IMAGE LIGHT PROJECTION.
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