Electrical and Thermal Properties of Azo-Metal Complexes used as Charge-Control Agents

• Sato, Y.

• Ito, S.

• Uta, K.

• J., Mizuguchi

抄録

The authors have recently proposed a novel chargecontrol mechanism that assumes an appreciable temperature increase at the “toner/carrier” interface due to the triboelectrification. In this model, the temperature dependence of the electrical conductivity of charge-control agents (CCAs) plays the crucial role. Therefore, electrical and thermal properties of azo-metal complexes used as CCAs have been investigated in order to provide additional evidence for our model as well as to study their high thermal stability. The electrical conductivity of a typical azo-Fe complex (i.e., T-77 from Hodogaya Chemical) is found to increase exponentially with temperature, and the value around 100°C is about two to three orders of magnitude higher than that at room temperature. This supports our charge-control mechanism. On the other hand, the structure analyses of T-77, sodium salt of T-77, and sodium salt of a Cr-complex revealed that there are intermolecular hydrogen-bond networks or coordination networks, in which each cation bridges neighboring anions. This type of network is found to be responsible for high thermal stability above 250°C.

収録刊行物

• Journal of imaging science and technology

  Journal of imaging science and technology 53 (1), 010504-1-010504-9, 2009-01

  Society for Imaging Science and Technology

詳細情報

• CRID: 1050845762669257728
• NII論文ID: 120002769874
• NII書誌ID: AA10826181
• ISSN: 10623701
• Web Site: http://hdl.handle.net/10131/7373
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
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  • CiNii Articles