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专利名称：Electrostatic recorder and electrostatic
latent image measuring instrument
发明人：Miyasaka, Toru,Umeda, Takao,Nagata,
Tetsuya,Igawa, Tatsuo
申请号：EP91105810.5申请日：19910411公开号：EP0452818B1公开日：19960306
摘要：An electrostatic recorder is provided with an electrostatic latent imagemeasuring instrument (4c) for measuring a state of an electrostatic latent image formedon a photosensitive substance (6), and executes a printing process until an electrostaticlatent image formed on a surface of a photosensitive substance (6) based on measureddata is transferred onto a blank form as a visual image by means of a transfer device byadjusting control factors such as exposure, exposure time, electrostatic charge voltage,development bias, temperature and humidity. Further, the electrostatic latent imagemeasuring instrument (4c) is provided with distance sensors (1), which when a measuringelectrode (3a) is made close to the photosensitive substance (6), keeps the distancetherebetween constant. It is thus possible to measure an electrostatic latent image evenif the photosensitive substance (6) is eccentric. Furthermore, spark between the
measuring electrode (3a) and the photosensitive substance (6) is prevented by filling witha gas having a high spark starting voltage between the measuring electrode (3a) and thephotosensitive substance (6) of the electrostatic latent image measuring instrument (4c).
申请人：HITACHI LTD
地址：JP
国籍：JP
代理机构：Patentanwälte Beetz - Timpe - Siegfried Schmitt-Fumian - Mayr
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