EP 0109722 A1 19840530 - A method and an apparatus for automatically adjusting the potential of a photosensitive layer.
Title (en)
A method and an apparatus for automatically adjusting the potential of a photosensitive layer.
Title (de)
Verfahren und Vorrichtung zum automatischen Anpassen des Potentials einer photoempfindlichen Schicht.
Title (fr)
Procédé et appareil pour l'ajustage automatique du potentiel d'une couche photosensible.
Publication
Application
Priority
NL 8204520 A 19821119
Abstract (en)
A method of automatically adjusting the potential of a photosensitive layer, in which the photosensitive layer is moved along a corotron energized by a high voltage supply and is charged thereby, in which the potential of a corotron-charged portion of the photosensitive layer is measured contactlessly by means of an electrometer device; that the value measured is compared with a predetermined target value, after which, if the difference between the value measured and the target value lies beyond predetermined limits, an adjustment parameter of the high voltage supply is changed; and that after a period of time minimally equal to the time required for moving the portion of the photosensitive layer charged with the new setting of the high voltage supply from the corotron to the electrometer, the potential of the photosensitive layer is measured again and compared with the target value, after which, if the difference between the target value and the value measured lies beyond predetermined limits, the said adjustment parameter is again changed, which cycle is repeated as long as the difference between the target value and the value measured lies within the predetermined limits.
IPC 1-7
IPC 8 full level
G03G 15/02 (2006.01)
CPC (source: EP)
G03G 15/0266 (2013.01); G03G 15/0291 (2013.01)
Citation (search report)
- US 3944354 A 19760316 - BENWOOD BRUCE R, et al
- US 3934141 A 19760120 - VARGAS JR RUDOLPH
- US 4134137 A 19790109 - JACOBS PAUL F, et al
- GB 1533311 A 19781122 - XEROX CORP
- DE 2007728 B2 19771020
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
DOCDB simple family (application)
EP 83201650 A 19831118; JP 21857083 A 19831119