EP 0097832 B1 19881026 - PROCESS FOR THE REGULATION OF THE PH VALUE IN THE REACTION ZONE OF AN ELECTROLYTIC PRINTER
Title (en)
PROCESS FOR THE REGULATION OF THE PH VALUE IN THE REACTION ZONE OF AN ELECTROLYTIC PRINTER
Publication
Application
Priority
US 39220882 A 19820625
Abstract (en)
[origin: US4453171A] A method of controlling the pH of a print reaction zone in an electrolytic matrix printer is described. Appropriate amounts of a buffering agent are included in the treated surface layer of the recording medium used in the printer to hold the pH of the print reaction zone in the range of 5.0 to 7.0 and, preferably, between 6.0 and 6.5. The pH of the electrolytic reaction zone can also be held in the desired range by adding appropriate amounts of a buffering agent to a supply of recording medium moistening fluid, either before and/or during actual printing, the latter step enabling dynamic buffering control if needed. The described method halts or reduces the degradation of print electrodes by effecting a balance between excess quantities of acid or base material generated in the print reaction zone during printing.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
B41M 5/20 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0097832 A2 19840111; EP 0097832 A3 19850703; EP 0097832 B1 19881026; DE 3378307 D1 19881201; JP H0247353 B2 19901019; JP S597091 A 19840114; US 4453171 A 19840605
DOCDB simple family (application)
EP 83105437 A 19830601; DE 3378307 T 19830601; JP 6716683 A 19830418; US 39220882 A 19820625