Abstract
Hot Isostatic Pressing (HIP) treatment was performed to improve the transparency of PLZT ceramics. High pressure and low sintering temperature were favorable to obtain a fine grain size of 2 μm. Transparency was mainly dependent on atmospheric conditions during HIP treatment. Transmittance at short wave length was dependent on stoichiometry of lead in PLZT. For application to electrophotographic printer, an array of microswitches (65×50 μm2 In cross section) was formed on the surface of thin plate of PLZT with thin dicing saws. The rise time of switching was less than 1 micro-second. Dispersion in the amount of optical outputs was within ±5% over the array of switches. Printing speed was more than 76 sheets of A4 size per minute.Color printing was also performed in resolution of 400 dots per inch.
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