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Analysis of the magnetic force acting on the toner in the black image area and white image area in longitudinal recording magnetography (2)

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Magnetic force acting on the toner from the magnetic latent image in the black image area and white image area was analyzed in the longitudinal recording magnetography. Simulative calculations were made using electromagnetic field simulator with finite element method and proximate equations. Experiment was also made using the enlarged model. Distance of 1/2 dot between the adjoining transition regions in the recording medium was allocated to form one dot black image and the distance of 3/2 dots between the adjoining transition regions was allocated to form one dot white image. Calculation was made in the case of 400dpi and toner with diameter of 10 micrometers. In the first model published at the past NIP conference toners were placed facing each other across the center of the transition region. In the second model described in this paper a toner is placed at the center of the transition region and the other toners are placed side by side. The toners are attracted strongly to the recording medium at the transition regions and they cross the border of the black latent image area. Then the black image is enlarged more than 1/2 dot. Consequently the white image area is reduced less than 3/2 dots. As a result, the size of the one dot black image and that of the one dot white image become almost same in both models.

Document Type: Research Article

Publication date: January 1, 2006

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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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