Electrophotographic photoreceptor
The electrophotographic photoreceptor addresses image blurring and wear resistance issues by using a photocurable resin protective layer with a specific infrared absorption ratio and elastic power, ensuring complete curing and stability.
JP2026087212APending Publication Date: 2026-05-27KYOCERA DOCUMENT SOLUTIONS INC
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- KYOCERA DOCUMENT SOLUTIONS INC
- Filing Date
- 2024-11-15
- Publication Date
- 2026-05-27
AI Technical Summary
Technical Problem
Discharge products such as ozone and NOx generated on the surface of photoreceptors react with unreacted groups and OH groups, reducing surface refreshability and leading to image defects like blurring, especially in high-humidity environments.
Method used
An electrophotographic photoreceptor with a protective layer composed of a photocurable acrylic or methacrylic resin, cured by UV light, having a specific infrared absorption spectrum ratio and elastic power to ensure sufficient hardening and wear resistance, optionally containing an oxygen absorber.
Benefits of technology
The photoreceptor suppresses image blurring while maintaining wear resistance, even in high-humidity conditions, by ensuring complete curing and stability of the protective layer.
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Smart Images
Figure 2026087212000001_ABST
Abstract
To provide an electrophotographic photoreceptor that can suppress the occurrence of image blurring while ensuring wear resistance. [Solution] The electrophotographic photoreceptor comprises a conductive substrate, a photosensitive layer provided on the conductive substrate, and a protective layer provided on the photosensitive layer. The protective layer is an acrylic resin or methacrylic resin which is a cured product of a photocurable composition containing a photocurable compound and a photopolymerization initiator. In the infrared absorption spectrum of the protective layer, the wavenumber is 1420 cm⁻¹. -1 ~1400cm -1 The maximum peak value in the region is at a wavenumber of 1950 cm. -1 ~1600cm -1 The ratio to the maximum peak value in this region is between 1.02 and 1.30. The elastic power of the protective layer is between 50.0% and 90.0%.
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Citation Information
Patent Citations
WO2022085728A1