Liquid Jet Head Nozzle Alignment via Intermediary Sleeve
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Solution Overview
Problem
Existing liquid jet recording devices face challenges in smoothly aligning nozzle holes due to shifts in the pressing point between adjustment members, leading to displacement in unintended directions, which hinders precise positioning.
Innovation Solution
A liquid jet head with a position adjustment mechanism that utilizes a carriage pin and sleeve configuration, where the first pressure-receiving surface of the sleeve faces the displacement direction, allowing for precise movement of the base plate and nozzle array relative to the carriage, irrespective of the positional relationship between members, enabling smooth alignment of nozzle holes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a position adjustment mechanism uses a member with a fixed position on the carriage and pushes it with an adjustment member, then alignment in a specific direction can be achieved, but the pressing point shifts depending on the positional relationship between members, causing displacement in unintended directions
Solution Approach 1:
The patent introduces an intermediary member (sleeve) between the adjustment member and the reference member. This intermediary component ensures that the pressing point remains fixed on the first pressure-receiving surface regardless of the positional relationship between the adjustment member and reference member, preventing unintended displacement and enabling smooth alignment in the desired direction
2Adaptability or versatility
If the pressing point shifts depending on the positional relationship between members, then the alignment mechanism can adapt to different positions, but it becomes unachievable to smoothly perform alignment since displacement occurs in directions other than the desired direction
Solution Approach 1:
The intermediary member (sleeve) with its first pressure-receiving surface provides a stable reference point that does not shift with positional changes. This allows the mechanism to maintain precise pressing contact across different positions while restricting movement to only the desired alignment direction, thereby achieving both adaptability and precision
3Manufacturing precision
If an eccentric part is used to make the inkjet head make relative displacement to the carriage, then alignment of the nozzle array can be achieved, but the mechanism becomes more complex
Solution Approach 1:
The sleeve acts as a simple intermediary that transmits the adjustment force from the adjustment member to the base plate through the first pressure-receiving surface. This eliminates the need for complex eccentric mechanisms while achieving precise alignment, as the fixed pressing point on the pressure-receiving surface naturally guides the displacement in the desired direction
Data Source
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AI summary
An alignment of jet holes of a liquid jet head is smoothly performed. A liquid jet head according to an embodiment of the present disclosure includes a nozzle section having a jet hole for liquid, a support member configured to support the nozzle section, and a position adjustment mechanism configured to adjust a position of the jet hole with respect to a carriage. The position adjustment mechanism includes a reference member a position of which with respect to the carriage is fixable, a position adjustment member which is coupled to the support member, and is configured to push the reference member to change a relative distance with respect to the reference member to thereby displace the support member on the carriage, and an intermediary member intervening between the reference member and the position adjustment member. The intermediary member is attached to either one of the reference member and the position adjustment member to form a first pressure-receiving surface facing to a displacement direction of the support member, and the other of the reference member and the position adjustment member has contact with the first pressure-receiving surface.