Paper lateral edge detector for printer

Details Paper lateral edge detector for printer Paper lateral edge detector for printer

2005-04-26

2005-04-26

Colilla, Daniel J. (Department: 2854)

Typewriting machines

Type-bar-action mechanism or type-face on type-bar or...

For bottom-strike typewriter

C400S409000, C400S061000, C347S262000, C347S264000, C347S234000

Reexamination Certificate

active

06883983

ABSTRACT:
First and second light receiving windows are formed on a head cover of a thermal head. The first light receiving windows are disposed to cross the lateral edges of the first king-sized recording paper. The second light receiving windows are disposed to cross the lateral edges of the second large-sized recording paper. First and second phototransistors are provided on the thermal head so as to measure quantity of light passed through the first and second light receiving windows. When printing the first recording paper, the first light receiving windows are partially shielded with lateral edges of the first recording paper and the second light receiving windows are completely shielded with the recording paper. Positions of the lateral edges are determined from the difference between output signals of the two phototransistors. When printing the second recording paper, the first light receiving windows are shielded by light-tight shielding stickers.

REFERENCES:
patent: 4293877 (1981-10-01), Tsunekawa et al.
patent: 5115124 (1992-05-01), Muto et al.
patent: 5117270 (1992-05-01), Toda
patent: 5270787 (1993-12-01), Shofner et al.
patent: 5568172 (1996-10-01), Cowger
patent: 5900649 (1999-05-01), Effelsberg
patent: 6115146 (2000-09-01), Suzuki et al.
patent: 6634820 (2003-10-01), Kobayashi et al.
patent: 6667468 (2003-12-01), Kurosawa et al.
patent: 6671003 (2003-12-01), George et al.
patent: 6737629 (2004-05-01), Nixon et al.
patent: 09-272217 (1997-10-01), None

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