Behavior of Charge Control Agent (CCA) in Two-Component Developer
Abstract:The relationship between the charge control capabilities of CCA and its modes of existance in two-component developer was investigated. Trianilino-triphenyl-methane TATPM was used as a positive type CCA. The highest charge up speed and the largest amount of charge were observed on the CCA-free toner particles which were in contact with the carrier particle surface on which the fine TATPM particles were deposited. The amount of positive charge on the CCA-free toner particles caused by the externally added TATPM particles in a toner-carrier mixture was larger than that on the conventional pulverized toner particles in which almost all TATPM particles are in its inner part. The results show that, during the toner-carrier mixing process, fine TATPM particles were produced and deposited onto the carrier particle surface. Then, the TATPM particles moved to the toner particle surface. As a result, the contact charge generated between the fine TATPM particles and the carrier particle surface took the main part of the positive charge on the CCA-free toner particles. The amount of TATPM deposited on the carrier surface was determined by the absorption at 602 nm of the TATPM / ethanol solution extracted from the carrier/ethanol dispersion. The relationship between the amount of TATPM on carrier surface and amount of positive charge on the toner was discussed.
Document Type: Research Article
Publication date: 2005-01-01
For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.
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