Apparatus and method for detecting paper skew in ink-jet...

Details Apparatus and method for detecting paper skew in ink-jet... Apparatus and method for detecting paper skew in ink-jet...

2005-08-16

2005-08-16

Nguyen, Lamson (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

C347S105000, C271S227000

Reexamination Certificate

active

06929344

ABSTRACT:
A paper skew detection apparatus in an ink-jet printer. The paper skew detection apparatus includes a first light emitter positioned below the paper being transported to irradiate light onto the paper; a second light emitter spaced apart from the first light emitter a predetermined distance and positioned below the paper being transported to irradiate light onto the paper; and a detector positioned on one side of a carriage to receive light emitted by the first and second light emitters. Here, the carriage holds an ink cartridge, below which a print head to discharge ink is installed, and reciprocates rectilinearly in a direction orthogonal to a transport direction of the paper.

REFERENCES:
patent: 5041850 (1991-08-01), Kahoyashi et al.
patent: 5324021 (1994-06-01), Onomoto et al.
patent: P1990-0017793 (1990-12-01), None
patent: 94002126 (1994-03-01), None

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