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1. WO2021062230 - DIRECT THERMAL RECORDING MEDIA WITH PERFORATED PARTICLES

Publication Number WO/2021/062230
Publication Date 01.04.2021
International Application No. PCT/US2020/052828
International Filing Date 25.09.2020
IPC
B41M 5/26 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
5Duplicating or marking methods; Sheet materials for use therein
26Thermography
B41M 5/36 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
5Duplicating or marking methods; Sheet materials for use therein
26Thermography
36using a polymeric layer, which may be particulate and which is deformed or structurally changed with modification of its properties, e.g. of its optical, hydrophobic-hydrophilic, solubility or permeability properties
B41M 5/28 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
5Duplicating or marking methods; Sheet materials for use therein
26Thermography
28using thermo-chromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat decomposable compounds, e.g. gas liberating
CPC
B41J 2/36
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, ; e.g. INK-JET PRINTERS, THERMAL PRINTERS; , i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
315characterised by selective application of heat to a heat sensitive printing or impression-transfer material
32using thermal heads
35providing current or voltage to the thermal head
355Control circuits for heating-element selection
36Print density control
B41J 2/48
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, ; e.g. INK-JET PRINTERS, THERMAL PRINTERS; , i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
2Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
435characterised by selective application of radiation to a printing material or impression-transfer material
475for heating selectively ; by radiation or ultrasonic waves
48melting ink on a film or melting ink granules
B41M 2205/04
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING,
2205Printing methods or features related to printing methods; Location or type of the layers
04Direct thermal recording [DTR]
B41M 5/26
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING,
5Duplicating or marking methods; Sheet materials for use therein
26Thermography
B41M 5/28
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING,
5Duplicating or marking methods; Sheet materials for use therein
26Thermography
28using thermochromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat- decomposable compounds, e.g. gas- liberating
B41M 5/36
BPERFORMING OPERATIONS; TRANSPORTING
41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
MPRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING,
5Duplicating or marking methods; Sheet materials for use therein
26Thermography
36using a polymeric layer, which may be particulate and which is deformed or structurally changed with modification of its' properties, e.g. of its' optical hydrophobic-hydrophilic, solubility or permeability properties
Applicants
  • APPVION OPERATIONS, INC. [US]/[US]
Inventors
  • FISHER, Mark
  • PITSCH, Michael
Agents
  • JENSEN, Stephen C.
Priority Data
62/905,81525.09.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DIRECT THERMAL RECORDING MEDIA WITH PERFORATED PARTICLES
(FR) SUPPORT D'ENREGISTREMENT THERMIQUE DIRECT À PARTICULES PERFORÉES
Abstract
(EN)
Direct thermal recording media are designed to operate based on a thermally-induced change of state rather than a thermally-induced chemical reaction between a leuco dye and an acidic developer. The media use two types of scattering particles (325, 327), one of which changes its state from solid to liquid during printing, and the other of which does not. The former particles (327), upon melting, fill spaces between the latter particles, thus eliminating or substantially reducing light scattering, which makes an underlying colorant visible at selected print locations where heat is locally applied. The latter, higher melting point particles (325) have a caged morphology and comprise perforated particles. The media can provide high quality thermally-produced images at print speeds at least as high as 250 mm/sec.
(FR)
L'invention concer des supports d'enregistrement thermique direct qui sont conçus pour fonctionner sur la base d'un changement d'état induit thermiquement plutôt qu'une réaction chimique induite thermiquement entre un colorant leuco et un révélateur acide. Les supports utilisent deux types de particules de diffusion (325, 327), l'une desquelles change son état de solide à liquide pendant l'impression, et l'autre ne change pas. Les premières particules (327), lors de la fusion, remplissent des espaces entre les dernières particules, éliminant ainsi ou réduisant sensiblement la diffusion de la lumière, ce qui rend visible un colorant sous-jacent à des emplacements d'impression sélectionnés où la chaleur est appliquée localement. Ces dernières, des particules à point de fusion plus élevé (325) ont une morphologie en cage et comprennent des particules perforées. Le support peut fournir des images produites thermiquement de haute qualité à des vitesses d'impression au moins aussi élevées que 250 mm/s.
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