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RADIANT THERMAL BIASING FOR LASER INDUCED THERMAL MARKING

IP.com Disclosure Number: IPCOM000023345D
Original Publication Date: 1977-Jun-30
Included in the Prior Art Database: 2004-Mar-30
Document File: 2 page(s) / 263K

Publishing Venue

Xerox Disclosure Journal

Abstract

A means for thermally biasing a donor layer prior to imaging by laser induced thermal marking is disclosed. Radiant ther-mal biasing is accomplished substantially as shown in the drawing above. In laser induced flash transfer, a donor ink layer is main-tamed on a transparent donor base. The base is positioned close to a receiver sheet, such as paper, as shown in the drawing. An imagewise laser beam writes on the donor ink layer and causes the ink to move to the receiver sheet by the flash transfer mechanism.

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XEROX DISCLOSURE JOURNAL

RADIANT THERMAL BIASING FOR LASER Proposed Classification
INDUCED THERMAL MARKING U.S. Cl. 219/l2lL
William L. Goffe Int. Cl. B23k 9/00

~MAGEW~SELASER BEAM

TRANSPARENT RADIATiON

DONOR BASE

2

\

~\\\\~~ DONOR

INK LAYER

'\\\ ~

RECEIVER

A means for thermally biasing a donor layer prior to imaging by laser induced thermal marking is disclosed. Radiant ther~
mal biasing is accomplished substantially as shown in the
drawing above.

In laser induced flash transfer, a donor ink layer is main~
tamed on a transparent donor base. The base is positioned
close to a receiver sheet, such as paper, as shown in the
drawing. An imagewise laser beam writes on the donor ink
layer and causes the ink to move to the receiver sheet by the
flash transfer mechanism.

Flash transfer is basically a thermal mechanism. Thermal bia~
sing of the donor ink layer prior to laser writing enables
faster writing with reduced energy.

Bias radiation may be from a second laser or from an alternate
source such as a tungsten lamp. Bias radiation is directed
from the same or opposite side of the recording member and is
directed to effect the donor ink layer in the areas just ahead
of and just following the writing laser,

Volume 2 Number 3 May/June 1977 35

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                   XEROX DISCLOSURE JOURNAL
36 Volume 2 Number 3 May/June 1977

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