| 摘要 |
<p>The circular picture drum is, during rotation, rotated about its axis while the scanning and/or recording means are moved parallel to the drum axis, so that a spiral or linear scanning or recording pattern is achieved. In addition a drum store (3) is provided, magnetically storing information about black or grey values and/or colour of picture points. This information can be read out any number of times and erased. An electrically controllable coupling (K1, K2) is provided between the driving means (10) and the picture drum (1) and the storage drum (3). A differential control drive is provided on the input side to the equipment.</p> |
