Abstract: An envelope bin assembly for a printer comprising a bin member in which envelopes can be stacked in readiness for feed by an envelope feed roller of the printer, the bin member being engageable in a support of the printer such that the feed roller of the printer can engage the frontmost envelope in the stack to feed the same to a printing station of the printer. A pressure applying member is guidably supported for displacement in the bin member for applying pressure, under the action of gravity, to the stack of envelopes at the rear thereof thereby to press the frontmost envelope in the stack against the feed roller and bend the envelopes at the front of the stack around the feed roller to produce a fan effect at the lower edges of the envelopes by which the lower edges are spread apart to facilitate single feed of the frontmost envelope.