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US 2026/0177910 A1Published application
Photosensitive media with diluent/solvent microcapsules and photosensitive black microcapsules in under-layer
OwnerWei YOU, Cheng-Hsuan WU +1inventors
InventorsWei YOU, Cheng-Hsuan WU, Rong-Chang LIANG
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Abstract
Imaging systems, microcapsules and method are provided, including an under-layer including one or more pressure-sensitive microcapsules including a solvent, plasticizer, or a diluent and/or a photo-hardenable black microcapsule including a black leuco-dye or a leuco-dye system. The resulting imaging sheets achieve improved image color saturation, an improved rate of image development, and enhanced dye mixing.
Claims33
An imaging system comprising:
- a) an under-layer comprising one or more pressure-sensitive microcapsules, said one or more pressure-sensitive microcapsules comprising a solvent, plasticizer, or diluent;
- b) an imaging layer overlying the under-layer and comprising one or more photosensitive microcapsules;
- said one or more photosensitive microcapsules comprising a leuco-dye, a photoinitiator, and a multifunctional photo-polymerizable or photocrosslinkable monomer or oligomer;
- and
- c) a leuco-dye developer;
- wherein the solvent or a diluent is a solvent or a diluent for the leuco-dye in the one or more photosensitive microcapsules, or a plasticizer for the leuco-dye developer.
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An imaging system comprising:
- a) an under-layer comprising one or more photo-hardenable black microcapsules, said one or more photo-hardenable black microcapsules comprising a photo-polymerizable or photo-crosslinkable multifunctional monomer or oligomer and a black leuco-dye or a leuco-dye system;
- and
- b) an imaging layer overlying the under-layer and comprising one or more photosensitive microcapsules;
- said photosensitive microcapsules comprising a leuco-dye, a photoinitiator, and a multifunctional photo-polymerizable or crosslinkable monomer or oligomer.
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An imaging system comprising:
- a) a first substrate having two sides;
- b) an under-layer overlaying one side of the first substrate, the under-layer comprising one or more microcapsules;
- c) a photosensitive microcapsule imaging layer overlying the under-layer and comprising one or more photosensitive microcapsules;
- said photosensitive microcapsules comprising a leuco-dye, a multifunctional photo-polymerizable or photocrosslinkable monomer or oligomer;
- and
- d) a leuco-dye developer layer overlaying the photosensitive microcapsule imaging layer;
- wherein the one or more microcapsules in the under-layer comprises at least one of:
- (i) a solvent, plasticizer, or a diluent for the leuco-dye in the photosensitive microcapsule or the leuco-dye developer;
- or
- (ii) a multifunctional photo-polymerizable or cross-linkable monomer or oligomer, a photoinitiator, and a black leuco-dye or a leuco-dye system.
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Dependencies are inferred from the claim text.