PRESSURE-RESPONSIVE PARTICLES, CARTRIDGE, PRINTED MATTER MANUFACTURING DEVICE, AND PRINTED MATTER MANUFACTURING METHOD

• Main Authors: TAKEUCHI SAKAE, KAMIWAKI SATOSHI, IIDA YOSHIFUMI, KASHIWAGI SATOMI, YOSHINO SUSUMU
• Format: Patent
• Language: English; Japanese
• Published: 15.02.2021
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

To provide pressure-responsive particles excellent in adhesiveness.SOLUTION: A pressure-responsive particle comprises: a pressure-responsive base particle; and an external additive containing titanium oxide particles. The pressure-responsive base particle includes: a styrenic resin containing styrene and another vinyl monomer as polymerization components; and a (meth)acrylic acid ester-based resin that contains, as polymerization components, at least two kinds of (meth)acrylic acid esters whose mass ratio accounting for the whole of the polymerization components is 90 mass% or more. The pressure-responsive particle has at least two glass transition points, and a difference between a lowest glass transition temperature and a highest glass transition temperature is 30°C or more.SELECTED DRAWING: None 【課題】接着性に優れる圧力応答性粒子を提供する。【解決手段】スチレン及びその他のビニルモノマーを重合成分に含むスチレン系樹脂と、少なくとも２種の（メタ）アクリル酸エステルを重合成分に含み、重合成分全体に占める（メタ）アクリル酸エステルの質量割合が９０質量％以上である（メタ）アクリル酸エステル系樹脂と、を含有する圧力応答性母粒子と、酸化チタン粒子を含有する外添剤と、を含み少なくとも２つのガラス転移点を有し、最も低いガラス転移温度と最も高いガラス転移温度との差が３０℃以上である、圧力応答性粒子。【選択図】なし