EP 0319361 B1 19930127 - METHOD AND APPARATUS FOR MONITORING A DYE BATH
Title (en)
METHOD AND APPARATUS FOR MONITORING A DYE BATH
Publication
Application
Priority
FR 8717254 A 19871204
Abstract (en)
[origin: EP0319361A1] The invention involves measuring the concentration of the bath (2) for each dye constituent contained in the bath by photocolorimetry at specific time intervals, comparing the values obtained with the reference values corresponding to the initial bath and adding a predetermined quantity of a correcting solution when the deviation established for a given constituent reaches a particular threshold. The correcting solution is a concentrated solution if the deviation is negative, that is to say if the bath is depleted, and a dilute solution if the deviation is positive, that is to say if the bath is enriched. <IMAGE>
IPC 1-7
IPC 8 full level
D06B 23/28 (2006.01)
CPC (source: EP)
D06B 23/28 (2013.01)
Designated contracting state (EPC)
CH DE ES GB IT LI
DOCDB simple family (publication)
EP 0319361 A1 19890607; EP 0319361 B1 19930127; DE 3877923 D1 19930311; DE 3877923 T2 19930812; ES 2039043 T3 19930816; FR 2624143 A1 19890609; FR 2624143 B1 19910208
DOCDB simple family (application)
EP 88402873 A 19881116; DE 3877923 T 19881116; ES 88402873 T 19881116; FR 8717254 A 19871204