TONER ADDITIVES TO BE SAFE FOR THE HUMAN BODY AND TONER USING THEM

The present invention relates to an external toner additive selected from the group consisting of tin oxide fine particles, composite tin oxide fine particles, and a mixture of the fine particles, wherein the fine particles have an energy band gap of 3.2 to 3.6 eV, an electronegativity value (χ) is...

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Main Authors KIM JIN SEOP, LEE SO YEON, LIM HYUNG JUN, KIM SANG GON, CHOI HYEON SEOK, SONG EUN YOUNG, KWON O SUNG, YOU YOUNG CHUL, YOO YONG GU
Format Patent
LanguageEnglish
Korean
Published 09.12.2020
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Summary:The present invention relates to an external toner additive selected from the group consisting of tin oxide fine particles, composite tin oxide fine particles, and a mixture of the fine particles, wherein the fine particles have an energy band gap of 3.2 to 3.6 eV, an electronegativity value (χ) is 15 to 18, and the blow-off charge amount (uC/g) is -100 to -150 negatively charged fine particles. The external toner additive of the present invention can replace nano-sized titanium dioxide particles conventionally used as existing external toner additives. In addition, it is possible to ensure the safety of workers in the burn industry as well as general consumers who use the burn machine from adverse effects that may occur due to the exposure of nano-sized titanium dioxide fallen from the surface of the toner during use, and is safe for the human body. 본 발명은 주석산화물 미립자, 복합주석산화물 미립자 및 이들 미립자의 혼합물로 이루어지는 군으로부터 선택되는 토너외첨제로서, 상기 미립자는 에너지 밴드 갭이 3.2 ~ 3.6eV, 전기음성도값(χ)이 15 ~ 18, Blow-Off 대전량(uC/g)이 -100 ~ -150 인 (-) 전하 미립자인 것을 특징으로 하는 토너외첨제를 제공한다. 본 발명의 토너외첨제는 지금까지 토너외첨제로서 통상적으로 사용되어져 온 나노사이즈 이산화티탄 입자를 대체할 수 있고, 사용중에 토너의 표면으로부터 탈락한 나노사이즈 이산화티탄의 피폭에 의한 생길 수 있는 악영향으로부터 화상업계의 근로자들은 물론 화상기계를 사용하는 일반소비자의 안전을 보장할 수 있고 인체에 안전하다.
Bibliography:Application Number: KR20190062963