Sheet feeding mechanism for printing apparatus

Details Sheet feeding mechanism for printing apparatus Sheet feeding mechanism for printing apparatus

1991-01-24

1992-03-24

Burr, Edgar S.

Typewriting machines

Sheet or web

Including sheet guide

400642, 400625, B41J 1310

Patent

active

050982117

ABSTRACT:
A sheet feeding mechanism for a serial printing apparatus capable of achieving accurate sheet feed performance free from slanted sheet feeding, dislocation between pages in printing on copy sheets, out-of-pitch, and the like. The sheet feeding mechanism includes a platen for receiving a bias force from a print head, first and second guide plates of the platen, first and second pairs of sheet feed rollers disposed outside the guide plates, a sheet guide member secured to move together with the print head, and a mechanism for elastically biasing a portion of the sheet guide member which confronts the platen onto the platen at all times. The first and second guide plates are positioned so as to be substantially coplanar with a print region of the platen, wherein one of the guide plates is positioned before the platen in the path of a sheet and the other guide plate is positioned after the platen in the path of a sheet.

REFERENCES:
patent: 4496256 (1985-01-01), McMorrow et al.
patent: 4904098 (1990-02-01), Hamilton
patent: 4938618 (1990-07-01), Inoue et al.
patent: 4960337 (1990-10-01), Kato et al.
patent: 5000597 (1991-03-01), Kilb et al.

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