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Experimental Study on the Magnetic Force Acting on the Toner Using an Enlarged Model in Magnetography

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This paper describes an experimental simulation on the magnetic force acting on the magnetic toner in magnetography with longitudinal recording. The author has presented some calculative simulations on the magnetic force acting on the toner from the magnetic latent image of the recording medium. Since it is difficult to measure the real magnetic force, a simulative experiment was carried out using an enlarged model. The results of the experiment and the calculations were compared. In the experimental apparatus, some of the rectangular permanent magnetic bars were arranged in line and they were likened to the recording medium. A steel ball was likened to a magnetic toner. An enlarged model of about 1000 times was made. The attractive force between the magnetic bars (recording medium) and the steel ball (toner) were measured by a balance. As a result it was found that the attractive force between the recording medium and the toner is very strong at the transition regions of the recording medium and weak at the intermediate region between the adjoining transition regions. However, the attractive force between the toners next to each other is fairly strong at the intermediate regions between the transition regions of the recording medium. As a result, the toner bridge is formed between the adjoining transition regions to form solid black.

Document Type: Research Article

Publication date: January 1, 2004

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

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