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A Numerical Simulation Method of Toner Transfer Considering Voltage Distribution of Transfer Belt

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Abstract:

A simulation method using 2-D and 3-D models is proposed for analysis of primary transfer processes. In the method, the motion of toner particles between an organic photoconductor (OPC) and an intermediate transfer belt (ITB) is calculated with a 3-D parallel plate model, while the 2-D electric potential distribution of the ITB is used as a boundary condition. The electric potential distribution of the ITB is obtained by 2-D electric field calculation, where a vicinity of a transfer nip is modeled with a boundary-fitted coordinate system, and the Poisson equation is solved in consideration of the transfer bias, transfer member configurations, the Paschen discharge, electrical conduction and advection of electric charge. In the 3-D calculation, a space between the OPC and the ITB in a limited part of an image area is modeled in a 3-D parallel plate model, and the motion of toner particles, which obeys Newton's second law of motion, and the Poisson equation are solved in consideration of the electric potential of the belt, charge and adhesion of toner, the latent image on the OPC, and the Paschen discharge. The 3-D calculation is carried out with changing the transfer gap, while the electric potential of the ITB obtained by the 2-D calculation is applied to the lower surface of the ITB layer. The simulation method enables analysis of transfer processes with a low computational load, and simulated results of transfer efficiency and toner scattering show good agreement with experiments.

Document Type: Research Article

Publication date: January 1, 2007

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  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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