Liquid Ejecting Apparatus Transport Amount Adjustment via Pattern Boundaries
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Solution Overview
Problem
In liquid ejecting apparatuses, inaccurate adjustment of the transport amount of a medium occurs due to ejecting failures, such as foreign substance attachment to nozzles, leading to liquid landing at undesired positions.
Innovation Solution
A liquid ejecting apparatus with a nozzle column that can reciprocate and a transport unit, forming first and second patterns with boundary regions to accurately adjust the medium's transport amount by recognizing boundaries between these patterns, even in cases of ejecting failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single boundary is used for transport amount adjustment, then the adjustment process is simple, but the accuracy is compromised when ejecting failures occur
Solution Approach 1:
The patent divides the adjustment reference into multiple boundaries (first boundary from first nozzle, second boundary from second nozzle) instead of relying on a single boundary. This segmentation ensures that if one nozzle fails to eject properly, the other boundary can still provide accurate transport amount adjustment reference, thereby improving reliability without sacrificing measurement precision.
2Reliability
If multiple nozzles are used to form multiple boundaries, then the reliability of transport amount adjustment is improved, but the device complexity increases
Solution Approach 1:
The patent makes the ejecting unit capable of multiple functions: it both ejects liquid for recording purposes and forms adjustment boundaries for transport amount calibration. By using the same nozzles and liquid ejection mechanism for dual purposes, the patent improves reliability through multiple boundaries without significantly increasing device complexity.
Data Source
AI summary
A liquid ejecting apparatus includes an ejecting unit that includes a nozzle column configured to eject liquid, the ejecting unit being configured to reciprocate along a first direction that intersects the nozzle column; a transport unit configured to transport a medium in a second direction that intersects the first direction; and a control unit configured to control the ejecting unit and the transport unit such that first and second patterns are formed. The first and second patterns are formed such that a plurality of boundaries between the first pattern and the second pattern are formed in between boundary portions of the first pattern and boundary portions of the second pattern.