Printing apparatus

Details Printing apparatus Printing apparatus

2011-07-12

2011-07-12

Do, An H (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S086000

Reexamination Certificate

active

07976119

ABSTRACT:
A printing apparatus includes a recording head that prints an image and an ink cartridge that stores ink to the recording head. The ink cartridge includes an ink pack and an ink-end sensor that detects an ink-end point based on the pressure of ink supplied from the ink pack. The ink pressure corresponding to the ink-end point detected by the ink-end sensor is set to a first pressure that is the minimum pressure near an outlet of the ink cartridge at which the recording head can print an image of predetermined quality. A determining unit permits starting of a printing or cleaning operation in response to a command issued before the ink-end sensor detects the ink-end point and prohibits starting of a printing or cleaning operation in response to a command issued after the ink-end sensor has detected the ink-end point.

REFERENCES:
patent: 5850237 (1998-12-01), Slade
patent: 6488354 (2002-12-01), Hosono
patent: 11-005300 (1999-01-01), None
patent: 2000-153622 (2000-06-01), None
patent: 2000-296627 (2000-10-01), None
patent: 2005-104089 (2005-04-01), None

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