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PHOTOACTIVATED INK SPRAY

IP.com Disclosure Number: IPCOM000022914D
Original Publication Date: 1976-Apr-30
Included in the Prior Art Database: 2004-Mar-27
Document File: 2 page(s) / 200K

Publishing Venue

Xerox Disclosure Journal

Abstract

P~n ink-jet marking method is provided wherein photoactivated ink particles are selectively moved to a propelling electrode when struck by suitable radiation, such as a laser pulse. Photoactivated pigment ink 1 flows between transparent electrode surface 2 and electrode surface 3 which are

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XEROX DISCLOSURE JOURNAL

PHOTO.~CTIV~T~INK SPRAY

D. L. Camphausen

Proposed Classification
TJ,S. CL. 346/1
mt. Cl, GOls 9/66

P~n ink-jet marking method is provided wherein photoactivated
ink particles are selectively moved to a propelling electrode
when struck by suitable radiation, such as a laser pulse.

Photoactivated pigment ink 1 flows between transparent
electrode surface 2 and electrode surface 3 which are

typically 10 to 30 microns apart. Any well known photo-
activated pigment ink may be used. A bias is applied be-
tween electrode surfaces 2 and 3 so that ink 1 is drawn
toward transparent electrode surface 2. On command, a
laser (not shown) is pulsed, the radiation of which is
compatible with the absorption characteristics of photo- activated pigments 4 in ink 1, Laser radiation 5 alters
the electrical characteristics of ink pigments 4 which
then move toward electrode 3 and are pulled through orifice
6 by accelerating electrode 7 which also propels pigment
4 toward (for example) a marking material (not shown)

Such a marking method is useful in an asynchronous mode
(e.g. in non-automatic typewriting device) or in a syn-
chronous mode up to about 10 K Hz (e.g. in a computer print-
out device)

Volume 1 Number 4 April 1976 75

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76 XEROX DISCLOSURE JOURNAL

Volume 1 Number 4 April 1976

[This page contains 1 picture or other non-text object]