Article supporter, supply device, and image forming apparatus

An article supporter for a supply device including a feeder that supplies, by air suction, an uppermost thinly tabular article from a bundle of a plurality of thinly tabular articles that is stacked and is partially different in thickness, the article supporter for supporting the bundle with a gap between the uppermost thinly tabular article and the feeder, the article supporter comprising:

• a first support that supports respective thinner parts of the plurality of thinly tabular articles;
• a second support that supports respective thicker parts of the plurality of thinly tabular articles and is movable upward and downward;
• and
• an adjuster that adjusts a level of the second support such that the uppermost thinly tabular article of the bundle is set within a predetermined range in a vertical direction,
• wherein the second support is disposed downstream of the first support in a feeding direction of the feeder,
• wherein each of the plurality of thinly tubular articles is an envelope,
• wherein the second support supports a bottom part of the envelope, and
• wherein the envelope is fed with the bottom part facing downstream in the feeding direction.