发明名称 IMPACT TYPE RECORDING APPARATUS HAVING REDUCED IMPACT SOUND DURING RETURN OF THE HAMMER
摘要 An impact type recording apparatus includes a platen for supporting a recording medium, a hammer guided for reciprocal movement between an impacting position in which it strikes against the platen and a retracted position spaced apart from the platen, energizing means producing a force for biasing the hammer from the retracted position toward the impacting position, means for detecting the position of the hammer to thereby detect the speed of the hammer, and drive control means for operating the energizing means with only one pulse to brake the hammer when the hammer is moved from the impacting position to the retracted position, and making the operation timing of the braking pulse variable in conformity with the result of the detection by the detecting means.
申请公布号 US5147142(A) 申请公布日期 1992.09.15
申请号 US19900588481 申请日期 1990.09.25
申请人 CANON KABUSHIKI KAISHA 发明人 SHIBAZAKI, NOBUO;SAITO, TETSUYA
分类号 B41J9/42 主分类号 B41J9/42
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