Incremental printing of symbolic information – Ink jet – Ejector mechanism
Patent
1996-08-12
2000-03-21
Le, N.
Incremental printing of symbolic information
Ink jet
Ejector mechanism
347 30, B41J 2165
Patent
active
060394323
ABSTRACT:
An ink jet printer having an ink jet head, a cap covering the ink jet head, and a suction pump for recovering the ink jetting condition of the ink jet head by adding negative pressure to the cap and sucking the inferior ink from the ink jet head. A coil spring forces the cap to contact the ink jet head while rail members having a cam groove control the contact force between the cap and the ink jet head. The contact force is controlled in at least two continuous stages. In the first stage, a first suction operation is conducted while the cap and ink jet head are contacting each other under a contact force having a first strength where a space formed between the cap and ink jet head does not communicate with the atmosphere. The second suction operation is performed after the first suction operation while the cap and ink jet head are partially contacting each other under a contact force having a second strength different from the first strength where the space is partially communicating with the atmosphere.
REFERENCES:
patent: 5126764 (1992-06-01), Miyauchi et al.
patent: 5138334 (1992-08-01), Rowe et al.
patent: 5325111 (1994-06-01), Dietl
patent: 5416507 (1995-05-01), Otsuka
patent: 5483266 (1996-01-01), Nakamura
Brother Kogyo Kabushiki Kaisha
Le N.
Tran Thien
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