| 摘要 |
A compact substantially self contained envelope feeding apparatus includes a magazine for holding a plurality of stacked envelopes which are dispensed through a bottom outlet by a two stage dispensing mechanism comprising spaced apart sets of drive rollers arranged along an envelope feed path. The second set of drive rollers includes resiliently biased idler rollers for guiding the envelopes along a curved portion of the feed path to a holding plate which holds each envelope momentarily stationary for engagement by endless feed belts which feed the envelope to a platen of a printer. A support unit is provided with quick release clamps for securing the feeding apparatus to the support shaft of the printer platen. Drive gearing is provided for engagement with a platen gear to drive the feed belts in timed relation to the platen for feeding envelopes to the platen and returning envelopes from the platen back to the magazine. A control circuit includes a photosensor for timing the operation of the dispensing mechanism relative to the position of envelope engaging lugs on the feed belts, and a photosensor for signalling a jammed or out of paper condition.
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