Sheet presser mechanism for recorders with pivotable cover plate

Details Sheet presser mechanism for recorders with pivotable cover plate Sheet presser mechanism for recorders with pivotable cover plate

1983-06-16

1985-12-24

Burr, Edgar S.

Typewriting machines

Sheet or web

Including friction-feed means

4006904, 400693, 400713, 346136, B41J 13042, B41J 2902

Patent

active

045602956

ABSTRACT:
A sheet presser mechanism for use in a recorder comprises a platen rotatable about its own axis, a drawing instrument directed toward the platen and movable axially thereof, a pair of spaced support members movable toward and away from the platen, a pair of presser roller units rotatably supported on the support members, respectively, and positioned respectively at axial ends of the platen. The presser rollers have shafts parallel to the platen and normally held resiliently against the platen, and a paper presser bar is spaced from the presser rollers in a circumferential direction of the platen so as to extend parallel to the platen. A pivot lever with a cover thereon supports the paper presser bar for moving the latter away from the platen, and a pair of presser members are actuatable in response to turning movement of the pivot lever to move the paper presser bar away from the platen for pushing the support members to move the presser rollers away from the platen.

REFERENCES:
patent: 1216857 (1917-02-01), Shammo
patent: 1368620 (1921-02-01), Foster
patent: 1568338 (1926-01-01), Kurowski
patent: 2142245 (1939-01-01), Helmond
patent: 2389813 (1945-11-01), Pfeiffer
patent: 2713932 (1955-07-01), Letterman
patent: 4042091 (1977-08-01), Levinson et al.
patent: 4179224 (1979-12-01), Feldman et al.
patent: 4340315 (1982-07-01), Teichmann et al.

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