LIQUID DEVELOPER

To provide a liquid developer which maintains good dispersion stability of toner particles contained therein even under high-temperature/high-humidity environment, and offers superior development stability over time.SOLUTION: A liquid developer is provided, containing toner particles, a carrier liqu...

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Main Authors HIRASA TAKASHI, NAKAJIMA MASAHITO, AKASHI YASUHISA, TAKENAKA KOJI, TSUCHIDA NAOHIKO, MATSUBARA AKIFUMI, OCHI KOICHIRO, TOKUNAGA YUZO, MIYAGAI TOMOYO, CHIMOTO YUYA
Format Patent
LanguageEnglish
Japanese
Published 19.09.2019
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:To provide a liquid developer which maintains good dispersion stability of toner particles contained therein even under high-temperature/high-humidity environment, and offers superior development stability over time.SOLUTION: A liquid developer is provided, containing toner particles, a carrier liquid, and a basic toner particle dispersant. The toner particles contain a polyester resin A containing at least one monomer unit selected from a group consisting of monomer units derived from an aliphatic monocarboxylic acid having a carbon number in a range of 1 to 6, inclusive, and monomer units derived from an aromatic monocarboxylic acid having a carbon number in a range of 7 to 12, inclusive.SELECTED DRAWING: None 【課題】高湿度環境下においても、液体現像剤中のトナー粒子の分散安定性が維持され、経時による現像安定性に優れた液体現像剤を提供すること。【解決手段】トナー粒子、キャリア液、及び塩基性トナー粒子分散剤を含有する液体現像剤であって、トナー粒子がポリエステル樹脂Ａを含有し、ポリエステル樹脂Ａが、炭素数１以上６以下の脂肪族モノカルボン酸に由来するモノマーユニット及び炭素数７以上１２以下の芳香族モノカルボン酸に由来するモノマーユニットからなる群より選ばれる少なくとも一つのモノマーユニットを含有することを特徴とする液体現像剤。【選択図】なし
Bibliography:Application Number: JP20180049350