| 摘要 |
A method of information recording and recognition comprising printing on one surface of a recording member information in the form of ink deposits having electrical conductivity measurable different from that of the non-printed background areas, passing the recording member through an information recognition zone containing corona generating means and sensor means, directing ionic emission from corona generating means towards one face of said recording member, and detecting on the sensor ionization and ion emission changes effected by electrical conductivity differences between said printed ink deposits and non-printed background areas, and converting the thus detected ionization and ion emission changes into electrical signal corresponding to the information. |
