Sheet thickness sensing technique and recording head automatic a

Details Sheet thickness sensing technique and recording head automatic a Sheet thickness sensing technique and recording head automatic a

1997-06-26

1998-09-15

Eickholt, Eugene H.

Typewriting machines

Including adjustment for optimum printing plane

Responsive to thickness of record-medium

40012001, 347 8, 25055927, B41J 1120

Patent

active

058069925

ABSTRACT:
A sheet thickness sensing apparatus of an image recording apparatus includes a thickness sensing circuit for generating a sheet thickness value corresponding to a reflective optical quantity sensed by a reflective optical sensor which is separately installed opposite to a reflective surface moving correspondingly according to the thickness of a fed sheet. A head driving enable time or a head gap is adjusted correspondingly to the thickness of the sheet.

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