Paper feeding device

Typewriting machines – Sheet or web – For feeding web record-medium

Patent

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Details

400642, 400647, B41J 1508

Patent

active

050113143

ABSTRACT:
A paper feeding device comprises a tractor including a paper transport member having a circumferential speed set substantially equal to or a little lower than the circumferential speed of a platen, a fulcrum shaft supporting the tractor thereon for pivotal motion between a pushing in position in which the tractor is directed toward a lower portion of an outer periphery of the platen and a pulling position in which the tractor is directed to an upper portion of the outer periphery of the platen, and a thin piece extending along the lower portion of the outer periphery of the platen from an extension line of a paper feeding route of the tractor in the pushing in position between the platen and the tractor and resiliently contacting with an inner face of a paper pan. When the tractor is fixed to the pushing in position, paper supplied from the tractor is guided by the thin piece and will not hang down to the paper pan side. To the contrary, when the tractor is fixed to the pulling position, paper is supplied from between the thin piece and the paper pan so that it is displaced away from the platen and is not acted upon by driving force of the platen, thereby preventing possible occurrence of slackening of the paper between the upper portion of the platen and the tractor.

REFERENCES:
patent: 752092 (1904-02-01), Myers
patent: 1058672 (1913-04-01), Helmond
patent: 1596467 (1926-08-01), Waldheim
patent: 2005450 (1935-06-01), Bower
patent: 2297490 (1942-09-01), Martin
patent: 2582783 (1952-01-01), Kloski
patent: 4197023 (1980-04-01), DeBoo
patent: 4606663 (1986-07-01), Christoph
patent: 4806035 (1989-02-01), Maeda

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