| 摘要 |
PURPOSE:To correct any difference in recorded data in a recording element array without substantially increasing the scale of circuits, by providing a line memory for storing picture signals, a memory circuit in which a number of times of recording in one-line scanning is set as a correction data based on the amount of data recorded in each element and a control circuit supplying the picture signals to a driving circuit for driving the recording element array according to the correction data. CONSTITUTION:Picture signals inputted from a picture signal input terminal 4 are stored in a line memory 5. The stored signals are read out for (n) times during one line scanning and inputted into a control circuit 7. The control circuit 7 selectively supplies the picture signals to a driving circuit 3, based on correction data from a memory circuit 6. That is, the picture signals are recorded for (n) times while one line is scanned, and the period of time for which electric current is applied to each element is changed by changing the number of times of recording. Further, more times of recording are performed for the elements emitting smaller amount of light, while fewer times of recording are performed for the elements emitting larger amount of light, so that any difference in amount of light among the various elements is properly corrected. |
