| 摘要 |
A training aid of the simulator type for use in teaching the techniques of adjusting the cylinders of a multi-color rotary web printing press to achieve acceptable registration between the successive impressions forming a printed color page. Four superimposed positive colored film transparencies mounted on a light box provide facsimiles of the red, yellow, blue and black images successively printed on a web; and all but the black transparency are carried separately on adjustable frames which are movable to effectively simulate the endwise (button-to-gear), the circumferential and the cocking adjustments of the plate cylinders of a rotary press. Endwise and circumferential simulating movements are by electric motors each of which is controlled for forward and reverse drive by a manual switch that is identical with the switch on a press cylinder adjustment control panel, and the manual cocking control precisely simulates that for a press cylinder. A "timer" which operates during a registration training run shows both elapsed time to achieve registration and the number of imperfect impressions produced in that time by a press operating at 500 feet per minute.
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