EP 1047980 A1 20001102 - PRINTING AND PHOTOCOPYING DEVICE AND METHOD WHEREBY ONE TONER MARK IS SCANNED AT AT LEAST TWO POINTS OF MEASUREMENT
Title (en)
PRINTING AND PHOTOCOPYING DEVICE AND METHOD WHEREBY ONE TONER MARK IS SCANNED AT AT LEAST TWO POINTS OF MEASUREMENT
Title (de)
EINRICHTUNG UND VERFAHREN ZUM DRUCKEN ODER KOPIEREN, WOBEI EINE TONERMARKE AN MINDESTENS ZWEI MESSORTEN ABGETASTET WIRD
Title (fr)
DISPOSITIF ET PROCEDE D'IMPRESSION OU DE PHOTOCOPIE, UNE MARQUE DE TONER ETANT DETECTEE AU NIVEAU D'AU MOINS DEUX POINTS DE MESURE
Publication
Application
Priority
- DE 19801521 A 19980116
- DE 19821922 A 19980515
- EP 9900211 W 19990115
Abstract (en)
[origin: WO9936834A1] The invention relates to an electrographic printing or photocopying device and method. A toner mark (10) is provided on a photoconductive drum and printed with toner using a developing station. The toner mark (10) is scanned by a sensor at two points of measurement (a1,a2). The amount of toner in a developing mixture consisting of two components depends upon the difference ( DELTA U) or the quotient of the amounts of the signals of the sensor at both points of measurement. A device which is also disclosed enables the exact length of the toner mark (10) to be determined.
IPC 1-7
IPC 8 full level
G01N 21/47 (2006.01); G03G 15/00 (2006.01); G03G 15/01 (2006.01); G03G 15/08 (2006.01)
CPC (source: EP US)
G03G 15/0855 (2013.01 - EP US); G03G 15/5041 (2013.01 - EP US); G03G 2215/00042 (2013.01 - EP US)
Citation (search report)
See references of WO 9936834A1
Designated contracting state (EPC)
BE DE FR GB
DOCDB simple family (publication)
WO 9936834 A1 19990722; WO 9936834 A9 19991014; CA 2316162 A1 19990722; CA 2316162 C 20070904; DE 59901179 D1 20020516; EP 1047980 A1 20001102; EP 1047980 B1 20020410; JP 2002509291 A 20020326; US 6434346 B1 20020813
DOCDB simple family (application)
EP 9900211 W 19990115; CA 2316162 A 19990115; DE 59901179 T 19990115; EP 99904782 A 19990115; JP 2000540485 A 19990115; US 60046401 A 20010214