Patent · US Expired

Electrostatic printing aid

US6508174B1 · kind B1 · utility

1Cited by

6References

9Claims

0Family size

Assignee

Eltex Elektrostatik GmbH · DE

Inventors

Ernst August Hahne · Allschwil, CH
Franz Knopf · Bühl, DE
Thomas Ludwig · Weil am Rhein, DE

Key dates

Filing date	Jul 28, 2000
Grant date	Jan 21, 2003
Priority date	—
Expiry date	Sep 1, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S101/37
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The invention relates to an electrostatic printing aid to assist with the transfer of printing ink that contains flammable solvents during printing with a high-voltage generator for generating an electrostatic high voltage and with a voltage device to transfer the high voltage onto a web to be printed that is in contact with a printing cylinder or plate, characterized in that the high-voltage generator is equipped with an output limiter and in that the voltage transfer device comprises slip rings, slip ring brushes, contact rollers or springs, and/or electrically conductive roller or ball bearings.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.