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US 6,631,969 B2Granted
Recording apparatus controlled with head characteristics and recording method
AssigneeCanon Kabushiki Kaisha
InventorsShigeyasu Nagoshi, Hiromitsu Hirabayashi, Noribumi Koitabashi, Hitoshi Sugimoto, Miyuki Matsubara, Hitoshi Nishikori, Masaya Uetuki
Life of this patent
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Abstract
A recording apparatus wherein a recording head which has been mounted can be identified more precisely by measuring characteristics of the recording head to obtain information for defining a drive condition of the head and storing the characteristics as ID information of the recording head.
Claims13
An ink jet recording apparatus, comprising:
- unejection detecting means for determining unejection of a recording head on the basis of a temperature change due to a temperature rise caused by ink ejection irrelevant to recording from the recording head, a temperature change due to a temperature fall after the ink ejection, or a relationship between both temperature changes;
- and
- means for changing a drive condition for ejection to detect the unejection, according to characteristic information for the recording head or the recording apparatus.
An ink jet recording apparatus, comprising:
- unejection detecting means for determining unejection of a recording head on the basis of a temperature change due to a temperature rise caused by ink ejection irrelevant to recording from the recording head, a temperature change due to a temperature fall after the ink ejection, or a relationship between both temperature changes;
- and
- means for changing an unejection determining condition for the unejection detecting, according to at least a head rank of the recording head.
An ink jet recording apparatus, comprising:
- unejection detecting means for determining unejection of a recording head by comparing a temperature change due to a temperature rise caused by ink ejection irrelevant to recording from the recording head, a temperature change due to a temperature fall after the ink ejection, or a sum of these two temperature changes, with a threshold value for determination;
- information storing means for storing information about a power supply voltage for driving said recording head;
- and
- driving condition changing means for changing a drive condition for ejection to detect the unejection, according to the information about a power supply voltage stored in said information storing means.
1 more element
An ink jet recording apparatus comprising:
- unejection detecting means for detecting unejection of a recording head;
- means for driving heaters for temperature adjustment set on the recording head;
- and
- means for awaiting the unejection detecting for a fixed time after termination of the driving of the heaters for temperature adjustment.
1 more element
Dependencies are inferred from the claim text.