Liquid ejecting apparatus with variable wiping of a liquid ejection head
AssigneeCanon Kabushiki Kaisha
InventorsYasushi Miura, Mitsuru Kurata, Toshiaki Mabuchi, Yasuyuki Takanaka
Life of this patent
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Abstract
A liquid ejecting apparatus, such as an ink-jet printing apparatus includes a blade for wiping a surface of a liquid ejecting head for ejecting a liquid and a device for cleaning the blade with achieving expansion of life and permitting efficient process. The apparatus achieves reduction of frequency of scrubbing contact between the blade and the liquid ejecting surface and high efficiency in recovery process associated with wiping operation and so forth. Also, by providing a washing liquid for the blade upon termination of printing, the blade may be maintained in sufficiently wetted condition.
Claims35
A recording apparatus for performing recording on a recording medium by ejecting a predetermined liquid employing a liquid ejection head, comprising:
- wiping means for wiping a surface of said liquid ejection head through which the liquid is ejected;
- and
- means for varying a wiping condition of said surface of said liquid ejection head by said wiping means;
- penetration amount control means for controlling a penetration amount of said wiping means into said liquid ejection head, wherein said liquid ejection head is reciprocated, and said means for varying the wiping condition varies a wiping direction relative to said liquid ejection head so that said wiping means wipes said surface of said liquid ejection head in only a predetermined direction during a recording operation and in reciprocating directions before the recording operation;
- recovery means for maintaining a good ejection condition of said liquid ejection head, said recovery means including
- means for performing a process employing said wiping means,
- means for performing a process employing said wiping means and pressurizing an ink supply system, and
- means for performing ejection of ink through said liquid ejection head for other than printing;
- and
- means for varying processing conditions of said recovery means for performing processes depending upon an image data.
A recording apparatus for performing recording on a recording medium by ejecting a predetermined liquid employing a liquid ejection head, comprising:
- wiping means for wiping a surface of said liquid ejection head through which the liquid is ejected;
- and
- means for varying a wiping condition of said surface of said liquid ejection head by said wiping means, wherein said wiping condition to be varied is a relative wiping speed between said wiping means and said liquid ejection head, and the relative wiping speed before a recording operation is lower than during the recording operation.
A recording apparatus for performing recording by ejecting a predetermined liquid employing a liquid ejection head, comprising:
- wiping means for wiping a surface of said liquid ejection head through which the liquid is ejected, said wiping means including a porous material blade;
- cleaning means for cleaning said wiping means, said cleaning means including liquid ejecting means for ejecting a washing liquid to said wiping means;
- and
- means for varying a wiping condition of said surface of said liquid ejection head by said wiping means, wherein said wiping condition to be varied is a content of a washing liquid of said wiping means, and the content of the washing liquid is greater before the recording operation than during the recording operation.
A recording apparatus for performing recording on a recording medium by ejecting a predetermined liquid employing a liquid ejection head, comprising:
- wiping means for wiping a surface of said liquid ejection head through which the liquid is ejected;
- and
- means for varying a wiping condition of said surface of said liquid ejection head by said wiping means, wherein said wiping condition to be varied is a frequency of contact of said wiping means and said liquid ejecting surface, and the frequency of contact before a recording operation is higher than during the recording operation.
A liquid ejecting apparatus for ejecting a predetermined liquid employing a liquid ejection head, comprising:
- wiping means for wiping a surface of said liquid ejection head through which the liquid is ejected, said wiping means including a porous material blade;
- and
- means for varying a wiping condition of said surface of said liquid ejection head by said wiping means, wherein said liquid ejection head is reciprocated, and the wiping condition to be varied is a penetration amount of said wiping means into said liquid ejection head,
- wherein said penetration amount before the recording operation of said liquid ejecting apparatus is greater than that upon recording.
A liquid ejecting apparatus for ejecting a predetermined liquid employing a liquid ejection head comprising:
- wiping means for wiping a surface of said liquid ejection head through which said liquid is ejected;
- cleaning means for cleaning said wiping means by providing washing liquid for said wiping means;
- and
- drying preventing means for preventing said wiping means from drying, wherein said drying preventing means has means for enclosing said wiping means.
A liquid ejecting apparatus for ejecting a liquid employing a liquid ejection head, comprising:
- wiping means for wiping a surface of said liquid ejection head through which the liquid is ejected, said wiping means including a porous material blade, and wiping being performed by a relative movement between said blade and said liquid ejection head;
- and
- control means for varying a wiping condition when wiping said surface of said liquid ejection head by said wiping means, the wiping condition differing depending upon whether wiping is performed before a liquid ejecting operation of said liquid election head or whether wiping is performed at a predetermined timing between ejecting operations of said liquid ejection head.
An ink jet recording apparatus for recording by ejecting an ink employing an ink jet recording head, comprising:
- wiping means for wiping a surface of said recording head through which the ink is ejected, said wiping means including a porous material blade, wiping being performed by a relative movement between said blade and said recording head;
- and
- recovery control means for controlling said wiping means to carry out wiping at a predetermined timing and for recovering said recording head to an ejecting condition,
- wherein said recovery control means varies a condition of said wiping means during a period between a recording operation of ejecting the ink from said ink jet recording head and non-performance of said recording operation, the wiping condition differing depending upon whether wiping is performed before a recording operation of said recording head or whether wiping is performed at a predetermined timing between recording operations of said recording head.
Dependencies are inferred from the claim text.