Ink jet recording apparatus for maintaining constant distance be

Details Ink jet recording apparatus for maintaining constant distance be Ink jet recording apparatus for maintaining constant distance be

1997-10-07

1999-01-12

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Controller

347 37, 347104, 400323, B41J 201

Patent

active

058596534

ABSTRACT:
A wheel for maintaining a constant distance between an ink discharge plane of a recording head and a recording sheet is provided on a carriage such that it is upstream of the recording head as viewed in the direction of movement of the recording head in a unidirectional print mode. A sensor monitors whether the recording sheet is moved off a contact of a feed roller which feeds the recording sheet to a record position and a pinch roller. Before a trailing edge of the recording sheet is moved off the contact of the feed roller and the pinch roller, bilateral recording is conducted to print in each of forward movement and backward movement of the carriage. When the sensor detects that the trailing edge of the recording sheet has been moved off the contact of the feed roller and the pinch roller, the recording is switched to unilateral printing. The print range at the trailing edge of the recording medium is thus extended.

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