Imaging media with dual layer developer structure
OwnerWei YOU, Ting-Hsuan LIN +2inventors
InventorsWei YOU, Ting-Hsuan LIN, Yuliana TASSIA, Rong Chang LIANG
Life of this patent
Estimating the term…
Abstract
Imaging systems, apparatus, developer systems and methods are provided which includes a two-layer developer comprising a low-haze clear developer layer (Dc) and a microporous translucent developer layer (Dp). The microporous translucent developer layer is deposited between an imaging layer which includes photosensitive microcapsule layer and the low-haze clear developer layer. The resulting imaging sheets achieve improved image color saturation, an improved rate of image development and enhanced dye mixing, and an improved printing energy efficiency as well as an improved weatherability or discoloration resistance of the developed image.
Claims28
An imaging system comprising:
- a) a microporous developer layer (Dp) comprising one or more dye developers, optionally one or more UV absorbers and optionally one or more optical brighteners;
- and
- b) a low-haze, clear developer layer (Dc) overlying the microporous developer layer and comprising one or more dye developers, optionally one or more optical brighteners and optionally one or more UV absorbers;
- wherein the concentration of dye developers in the low-haze, clear developer layer (Dc) is no greater than the concentration of the dye developers in the microporous layer (Dp).
(canceled)
(canceled)
(canceled)
(canceled)
-21. (canceled)
An imaging system comprising:
- a) a first substrate having two sides;
- b) optionally an under-layer overlaying one side of the first substrate, the under-layer comprising one or more microcapsules;
- c) an imaging layer overlying the under-layer, the imaging layer comprising one or more photosensitive microcapsules;
- said photosensitive microcapsules comprising a leuco-dye, a multifunctional photo-polymerizable or photocrosslinkable monomer or oligomer;
- d) a microporous developer layer (Dp) comprising one or more leuco-dye developers, one or more UV absorbers and optionally one or more optical brighteners;
- e) a low-haze, clear developer layer (Dc) overlying the microporous developer layer and comprising one or more dye developers, one or more optical brighteners and optionally one or more UV absorbers;
- and optionally
- f) a second substrate or a durable layer overlaying the low-haze, clear developer layer.
Dependencies are inferred from the claim text.