Method and device for orientating and fixing in a determined direction magnetic particles contained in a polymerizable ink
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 8, 1980
Grant Date -
N/A
app pub date -
Oct 23, 1978
filing date -
Nov 10, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention comes within the field of magnetic recording. A method of ontating and fixing in a determined direction magnetic particles contained in a polymerizable ink (2) spread on a support (1), characterized by the following operations; the support is conveyed towards a zone (5) subjected to a magnetic field whose orientation and direction are adjusted as a function of time in accordance with the message to be written, the support passing through the zone at an adjustable speed, and while the support is passing therethrough, the ink deposited on it is polymerized by means of ultraviolet radiation from a lamp (10) which reaches only a part of the zone submitted to the magnetic field, said part corresponding to that through which said inked support last passes. The invention applies in particular to identity documents.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully