Carriage Stabilization in Recording Apparatus via Guide Frame
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Solution Overview
Problem
Increased nozzle density in recording heads leads to higher ink supply demands, resulting in larger ink tube diameters that cause tube bending reaction forces, potentially separating the carriage from the guide frame and deteriorating recording quality due to shifting ink impact positions.
Innovation Solution
The recording apparatus stabilizes the carriage by using guide members that intersect the ink tube path, reducing the moment force and restoring force, and optimizing the tube diameter conversion to maintain ink supply while minimizing carriage separation from the guide frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the number of nozzles in the recording head is increased to improve recording quality, then the ink supply demand increases, but the tube bending reaction force increases causing carriage separation and deteriorating recording quality
Solution Approach 1:
A guide frame is introduced as an intermediary structure between the carriage and the external environment. The guide frame includes guide members that constrain the carriage movement, preventing separation caused by tube bending reaction forces while allowing the carriage to maintain its recording function with increased nozzle density
Solution Approach 2:
The patent changes the mechanical parameters of the system by introducing a guide frame with specific structural characteristics (guide members extending in the apparatus width direction, positioned to contact the carriage). This structural parameter change enables the system to withstand higher tube bending reaction forces generated by increased nozzle density without compromising recording quality
2Quantity of substance
If large diameter ink tubes are used to supply sufficient ink to high-density nozzles, then the ink supply capacity increases, but the tube bending reaction force increases separating the carriage from the guide frame
Solution Approach 1:
The guide frame acts as a mediator that decouples the relationship between ink tube diameter and carriage stability. It provides a stable reference structure that maintains carriage position even when large diameter tubes generate significant bending reaction forces during reciprocating motion
Solution Approach 2:
The ink tubes are designed with curved paths including turnback portions that follow the reciprocating motion of the carriage. This curved configuration allows the tubes to accommodate movement while the guide frame ensures the carriage remains properly positioned despite the flexibility required in the tube routing
3Adaptability or versatility
If the carriage is allowed to separate from the guide frame to accommodate tube bending, then the tube flexibility is maintained, but the recording quality deteriorates due to shifting ink impact positions
Solution Approach 1:
The system is segmented into independent functional components: the carriage with recording head, the ink tubes with turnback portions, and the guide frame with guide members. This segmentation allows the ink tubes to flex and adapt to reciprocating motion while the guide frame maintains the carriage position, ensuring ink impact accuracy is preserved
Solution Approach 2:
The patent establishes specific geometric parameters for the guide frame and guide members that define the carriage's movement constraints. These parameter specifications ensure that while ink tubes can flex, the carriage maintains precise positioning for accurate recording
Data Source
AI summary
A recording apparatus includes a carriage which is capable of moving along a first direction, a first sliding section that is provided in the carriage, on one side in a second direction, which intersects the first direction, a second sliding section that is provided, in an arm section, which extends from the other side, protruding in the second direction, a tube that supplies the liquid, which is delivered from a liquid accommodation section, to the carriage, extends in a direction that intersects the second direction by extending out from the carriage, and extends in an opposite direction by turning back in a vertical direction, in which the tube extends in the direction that intersects the second direction by passing at least one of above and below the arm section.