Cleaning liquid for inkjet recording apparatus, method for cleaning inkjet recording apparatus, recording method, and cleaning and filling liquid
AssigneeRicoh Company, Ltd.
InventorsHidefumi Nagashima, Naohiro Toda, Juichi Furukawa, Masahiro Kido, Takashi Tamai, Ichiroh Fujii, Hisashi Habashi
Life of this patent
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Abstract
A cleaning liquid for an inkjet recording apparatus is provided. The cleaning liquid includes an organic solvent having a boiling point of less than 250° C. and no organic solvent having a boiling point of 250° C. or more. The organic solvent having a boiling point of less than 250° C. includes two or more methoxy-group-containing organic solvents and at least one of 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, and 2,3-butanediol.
Claims7
A cleaning liquid for an inkjet recording apparatus, comprising:
- an organic solvent having a boiling point of less than 250° C., the organic solvent including:
- two or more methoxy-group-containing organic solvents;
- and
- at least one member selected from the group consisting of 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, and 2,3-butanediol,
- wherein the cleaning liquid includes no organic solvent having a boiling point of 250° C. or more.
A method for cleaning an inkjet recording apparatus, comprising:
- filling a cleaning liquid in an ink supply passage of the inkjet recording apparatus which is filled with an ink,
- the cleaning liquid including no organic solvent having a boiling point of 250° C. or more, and the cleaning liquid comprising instead an organic solvent having a boiling point of less than 250° C. and including:
- two or more methoxy-group-containing organic solvents;
- and
- at least one member selected from the group consisting of 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, and 2,3-butanediol;
- and
- flowing the cleaning liquid in the ink supply passage, wherein the following formula being satisfied:
- (A2/A1)×100≦2 (1)
- wherein A1represents an absorbance of the ink and A2 represents an absorbance of a liquid present in the ink supply passage after the flowing.
A method for cleaning an inkjet recording apparatus, comprising:
- filling a cleaning liquid in an ink supply passage of the inkjet recording apparatus which is filled with an ink,
- the cleaning liquid including no organic solvent having a boiling point of 250° C. or more, and the cleaning liquid comprising instead an organic solvent having a boiling point of less than 250° C. and including:
- two or more methoxy-group-containing organic solvents;
- and
- at least one member selected from the group consisting of 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, and 2,3-butanediol;
- and
- discharging the cleaning liquid from the ink supply passage;
- and
- repeating the filling and the discharging until the following formula is satisfied:
- (A2/A1)×100≦2 (1)
- wherein A1 represents an absorbance of the ink and A2 represents an absorbance of a liquid present in the ink supply passage after the discharging.
Dependencies are inferred from the claim text.