Electrophotography – Internal machine environment
Reexamination Certificate
2006-11-14
2006-11-14
Tran, Hoan (Department: 2852)
Electrophotography
Internal machine environment
Reexamination Certificate
active
07136605
ABSTRACT:
A method of manufacturing an image forming apparatus includes evaluating, based on a pair comparison method, sounds generated when forming an image, carrying out a multiple linear regression analysis using a difference between scores of the evaluation as a target variable and a difference between psycho-acoustic parameter values as an explanatory variable, deriving formula concerning the difference in scores of sound quality from a result of the analysis, substituting an average of the psycho-acoustic parameter values used to derive the formula into the formula, defining discomfort of the sound when all the parameter values are average values as zero, and deriving a sound quality evaluation formula, and designing each unit of the apparatus based on the sound quality evaluation formula.
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Hirono Motohisa
Tsunoda Koichi
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