Spectral Characteristics of Roadway Roughness on Bridges

Honda, Hideyuki; Kido, Takayoshi; Kajikawa, Yasuo; Kobori, Tameo

doi:10.2208/jscej1969.1981.315_149

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…Based on the above ion control characteristics, two methods can be used to control the amount of ion projection for each dot as follows (Honda et al 1981, Omodani et al 1986.…”

Section: Ion Control Methods For Continuous-tone Reproductionmentioning

confidence: 99%

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Ion flow control characteristics for high quality continuous-tone printing

Omodani

Tanaka

Hoshino

1987

J. Phys. D: Appl. Phys.

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Ion flow control is investigated theoretically and experimentally in order to achieve a high quality continuous-tone electrostatic printing process. The behaviour of ion flux controlled by a pair of aperture electrodes is clarified by an analysis using computer simulation of ion trajectories, paying particular attention to the diameter of the ion flux. An electric charge image is formed experimentally by controlling ion projection time and analysed by SEM observation and by measurement of surface potential, revealing its change with ion projection time. Gray-scale printing characteristics are then clarified by measuring the optical densities of the image developed with toner; 64 levels of gray-scale image are obtained with resolutions of 8 dots mm-1 and 12 dots mm-1, demonstrating the feasibility of this method for continuous-tone printing.

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“…Based on the above ion control characteristics, two methods can be used to control the amount of ion projection for each dot as follows (Honda et al 1981, Omodani et al 1986.…”

Section: Ion Control Methods For Continuous-tone Reproductionmentioning

confidence: 99%

“…Ion flow printing process has been investigated in several reports (Pressman 1974, 1976, Kubota and Miyoshi 1977, Honda et a1 1981, Moore et al 1984. However, the conditions for high quality continuoustone printing have not been obtained as yet.…”

Section: Continuous-tone Image Reproductionmentioning

confidence: 99%