Typewriting machines – Means auxiliary to typewriting function – Indicator means
Patent
1994-12-22
1997-02-25
Bennett, Christopher A.
Typewriting machines
Means auxiliary to typewriting function
Indicator means
400279, 400322, B41J 2942
Patent
active
056054076
ABSTRACT:
A printer is provided comprising a carriage on which recording head is mounted. Drive mechanisms for moving carriage in reciprocating motions an encoder having openings provided contiguously in the circumferential direction at fixed intervals, attached thereto, and which rotates as carriage moves. A position detector is provided in proximity to the encoder for detecting the encoder's detection-target unit and generates timing pulses in response thereto. A shielding plate is attached to carriage for blocking the encoder from the position detector at the home position. A processor detects the home position for carriage based upon a timing pulse pause time.
REFERENCES:
patent: 3891077 (1975-06-01), Sauerbrunn
patent: 4264220 (1981-04-01), Okcuoglu
patent: 4869609 (1989-09-01), Iwata
patent: 5090829 (1992-02-01), Lee et al.
patent: 5368402 (1994-11-01), Takahashi et al.
patent: 5433541 (1995-07-01), Hieda et al.
Hama Susumu
Kamijo Masahiro
Shimizu Manabu
Takizawa Hiroshi
Watanabe Toshiaki
Bennett Christopher A.
Janofsky Eric B.
Seiko Epson Corporation
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