| 摘要 |
<p>A coding system for applying identifying data bits to a segment of a film strip having an integrated circuit bonded to a lead pattern formed on the segment by selectively piercing marking areas of the segment. A die of a punch press has a predetermined number, normally a power of 2, of pin holes which are arranged in a predetermined array. Piercing punches, one for each pin hole, are mounted on a punch holder for limited vertical movement with respect to the punch holder. The punches are arranged so each can be inserted into its corresponding pin hole. To prevent movement of piercing punches relative to the punch holder on which it is movably mounted and to vary the data applied to a segment, a backup pin is placed between a punch backup plate and the head of the piercing punch. When the punch holder is moved by the actuator of the punch press toward the die, the piercing punches held substantially immovable by backup pins are forced into their corresponding pin holes in the die to form holes in the marking areas of a segment positioned on the die by pilot pins mounted on the punch holder. The presence or absence of holes at predetermined points in the coding areas of the segment represent data.</p> |
