Title:
INK TANK
Document Type and Number:
Japanese Patent JP3244941
Kind Code:
B2
Abstract:
PURPOSE: To execute a high quality printing by good ink supply and to maintain the stable negative pressure by a simple structure by a constitution wherein a capillary of which one end is connected to an open air communication hole at a part upper a liquid level of a reserved ink to be opened to an external section of an ink tank and the other end is opened into the ink tank in the vicinity of a bottom section thereof is provided.
CONSTITUTION: An end of a capillary is connected to an open air communication hole 3 at a part upper a liquid level of a reserved ink to be opened to the open air and the other end is opened into an ink tank 1 in the vicinity of a bottom section thereof to be a hole 5. Along the consumption of the ink 7 in the ink tank 1, an air is intermittently flown into the tank 1 via the hole 5. At that time, a negative pressure in a direction of sucking the ink 7 to the tank 1 via an ink ejection nozzle in a record head section RH is generated in the tank 1 because of a reduction pressure on an air section 8 along the ink consumption and a meniscus force at the hole 5. As a result, the proper negative pressure is applied on the record head section, thereby obtaining stable ink supply and high quality printing.
Inventors:
Yohei Sato
Masahiko Higuma
Jun Kawai
Torachika Nagata
Yoichi Tanaya
Yu Ikeya
Kazuaki Masuda
Masahiko Higuma
Jun Kawai
Torachika Nagata
Yoichi Tanaya
Yu Ikeya
Kazuaki Masuda
Application Number:
JP11102694A
Publication Date:
January 07, 2002
Filing Date:
May 25, 1994
Export Citation:
Assignee:
Canon Inc
International Classes:
B41J2/175; (IPC1-7): B41J2/175
Domestic Patent References:
| JP1136752A | ||||
| JP61139446A |
Attorney, Agent or Firm:
Keizo Nishiyama (1 person outside)