| 摘要 |
<p>PURPOSE:To print favorably without generating any feeling of incompatibility in the head arrangement, by a printer construction wherein a multiplicity of dot- forming elements driven in a partitioned manner and inclined in a staggered manner against a recording medium which is relatively moved. CONSTITUTION:The angle of inclination theta1 of LEDs is so set as to satisfy the relationship of the equation, wherein V1(mm./sec) is the linear velocity of a photosensitive material, t1 is the period of time required for sequentially driving the LEDs in a group, and L is the length of the LED. Where the head is used for a printer in which the linear velocity of the photosensitive material is V1, printing dots are arranged on a straight line. The dot-forming elements may be a PLZT photo shutter array or a liquid-crystal shutter array in a photo shutter array printer, or a thermal head array in a thermal printer. Accordingly, it is possible to print favorably, without changing the head, even when the linear velocity of the recording medium such as a photosensitive material is varied.</p> |
