Improved imaging media with dual layer developer structure

A dual-layer developer structure with a microporous and low-haze clear developer layer addresses the challenge of achieving high-quality, high-saturation images in portable systems by enhancing dye mixing and reducing haze without high temperature post-heating.

WO2026139864A1PCT designated stage Publication Date: 2026-07-02POLAROID IP BV
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
POLAROID IP BV
Filing Date
2025-12-22
Publication Date
2026-07-02

AI Technical Summary

Technical Problem

Existing microcapsule imaging systems face challenges in achieving high-quality, continuous-tone full-color images with high color saturation and low graininess, particularly in battery-operated portable applications, due to the need for high temperature and pressure which are limited by energy constraints.

Method used

A dual-layer developer structure comprising a microporous developer layer and a low-haze clear developer layer, with varying concentrations and properties to enhance dye mixing and reduce haze, is used to improve image quality without requiring high temperature post-heating.

Benefits of technology

The dual-layer developer structure enables faster color development, higher color saturation, and improved image stability with reduced discoloration and haze, suitable for battery-operated portable applications.

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Abstract

Imaging systems, apparatus, developer systems and methods are provided which includes a two-layer developer comprising a low-haze clear developer layer (De) 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.
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