Title:
INK-JET RECORDING HEAD
Document Type and Number:
Japanese Patent JP3758184
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a preferable image by preventing generation of a nozzle with ejection failure without deterioration of the printing speed or excessive ink consumption with regard to the maintenance technique of an ink-jet recording apparatus.
SOLUTION: Generation of a nozzle with ejection failure is prevented by forming an orifice plate with a porous material capable of being impregnated, and supplying a moisturizing liquid or an ink to the orifice plate so as to keep the nozzle meniscus surface in a moist state. Moreover, thickening of the ink in a meniscus derived from drying of the ink is prevented by regularly vacuuming the ink in the vicinity of the nozzle, that is, the meniscus by providing a negative pressure to the porous orifice plate so as to prevent generation of a nozzle with ejection failure by vacuuming the thickened ink in the meniscus surface via the orifice plate in addition to an ordinary ink supply path.
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Inventors:
Katsuya Kawai
Toshitaka Ogawa
Tobita Satoru
Toshitaka Ogawa
Tobita Satoru
Application Number:
JP2001398765A
Publication Date:
March 22, 2006
Filing Date:
December 28, 2001
Export Citation:
Assignee:
Ricoh Printing Systems Co., Ltd.
International Classes:
B41J2/045; B41J2/18; B41J2/055; B41J2/135; B41J2/175; B41J2/185; (IPC1-7): B41J2/045; B41J2/055; B41J2/175; B41J2/18; B41J2/185
Domestic Patent References:
| JP2293156A | ||||
| JP6297705A |