Design and Assembly Criteria for a quiet Printer

• Main Authors: Chen, Jih Jyh, 陳紀志
• Other Authors: Wang Jyh Hong
• Format: Others
• Language: zh-TW
• Published: 1996
• Online Access: http://ndltd.ncl.edu.tw/handle/30520422482389384538

碩士 === 國立清華大學 === 動力機械學系 === 84 === Lately, many reports attach importance to reduce the noise radiated by working machine. From the view point of noise re- duction, it is necessary to locate the source position and know how much power does it radiated. The intensity method, although, has its reliability, for a noise system which can''t isolate any source, the method is failed to identify the source power. In this work, a more convenient, time saving method was investigated to identify every source power of a noise system. The most important feature of this method is without using any isolation techniques, one can still identify every source power under its normal working condition. At last, we apply this method to identify the source power of a jet printer, discuss the mechanism by which the sound radiated and how to improve it.