Typewriting machines – Including adjustment for optimum printing plane – Responsive to thickness of record-medium
Patent
1984-01-11
1986-05-20
Burr, Edgar S.
Typewriting machines
Including adjustment for optimum printing plane
Responsive to thickness of record-medium
400584, 400596, B41J 1120
Patent
active
045897840
ABSTRACT:
A print head (15) on a carriage (16) slides on a carriage guide bar (17) in front of a platen bar (18). A receipt slip (25) is fed from a roll (26) over part of the width of the platen bar (18) to a knife (40) for cutting off individual receipts. A daybook slip (45) is fed from a roll (46) over the bar (18) to a take-up roll (50). Other documents may be fed in for printing either downwardly between upper guides (37 and 38) or upwardly between lower guides (35 and 55). In either event the inserted document is engaged by a drive roller (60) and pressure roller (70) to be positioned at a predetermined height, under control of photodetectors (80 and 81). The pressure roller (70) is mounted between levers and can move away from the drive roller (60) to accommodate the thickness of the inserted document. The levers also support the carriage guide (17), whereby the head (15) is positioned a constant distance from the surface on which printing is effected.
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patent: 3978964 (1976-09-01), Kwan
patent: 4109779 (1978-08-01), Bauer et al.
patent: 4229113 (1980-10-01), Anderson et al.
patent: 4234261 (1980-11-01), Hendrischk et al.
patent: 4250780 (1981-02-01), Shimizu et al.
patent: 4268177 (1981-05-01), Veale
patent: 4367964 (1983-01-01), Cranston
Sofi Sergio
Valle Franco
Burr Edgar S.
Ing. C. Olivetti & C. S.p.A.
Weresh John A.
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