EP 0195655 A2 19860924 - Automatic setup of electrophotographic printing machines.
Title (en)
Automatic setup of electrophotographic printing machines.
Title (de)
Automatische Einstellung von elektrophotographischen Kopiergeräten.
Title (fr)
Ajustage automatique des machines à copier électrophotographiques.
Publication
Application
Priority
- US 71337185 A 19850318
- US 71353085 A 19850318
Abstract (en)
An automated process and apparatus for establishing the basic xerographic operating parameters for an electophotographic printing machine. The document scanning means (42, 43, 44, 45) is used in a setup mode to generate test patches (100, 102, 104, 106) of varying density on the machine photoreceptor (10). The levels are measured and compared to pre-set values stored in a digital controller memory until convergence is obtained along three separate points on the photo-induced discharge curve (PIDC) (see Figure 2). The controller (31) adjusts the system parameters of charge circuit, developer bias and system exposure in an iterative process and corresponding to the PIDC for the particular machine.
IPC 1-7
IPC 8 full level
G03G 15/00 (2006.01); G03G 21/00 (2006.01)
CPC (source: EP)
G03G 15/5041 (2013.01); G03G 2215/00042 (2013.01)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0195655 A2 19860924; EP 0195655 A3 19870401; EP 0195655 B1 19910508; DE 3679095 D1 19910613; JP S61213865 A 19860922
DOCDB simple family (application)
EP 86301991 A 19860318; DE 3679095 T 19860318; JP 5908486 A 19860317