Inkjet Head Unit Position Adjustment via Guide Screw Mechanism
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Solution Overview
Problem
Existing inkjet recording devices face challenges in precisely adjusting the position of the head unit within the mounting space, which can lead to misalignment and affect printing quality.
Innovation Solution
An adjustment mechanism comprising a guide screw, a large-diameter gear that moves axially with the guide screw, an operation member for rotating the gear, and a lever member with contact portions that adjust the position of the head unit, allowing for precise movement and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a pressing mechanism is used to adjust the position of the head unit, then the position can be adjusted, but the adjustment precision is insufficient leading to misalignment
Solution Approach 1:
The patent replaces the conventional pressing mechanism with a screw mechanism (guide screw 73) that converts rotational motion into precise linear displacement. The screw thread geometry provides mechanical advantage, allowing fine position adjustments through controlled rotation, thereby achieving higher positioning precision and alignment accuracy.
2Ease of operation
If the head unit position is adjusted by pressing, then position adjustment is possible, but the adjustment mechanism is complex and costly
Solution Approach 1:
The patent extracts the essential function of position adjustment from a complex pressing mechanism and implements it through a simplified screw-based system. The guide screw 73 works in conjunction with a minimal set of supporting components (moving member 72, operation member 70, lever member 80) to achieve the adjustment function with reduced structural complexity and lower cost.
3Device complexity
If a simple pressing mechanism is used, then the device structure is simple, but the adjustment precision is low causing misalignment
Solution Approach 1:
The patent introduces dynamic adjustment capability through the screw mechanism, where the moving member 72 can be rotated along the guide screw 73 to achieve continuous, fine-position adjustments. This dynamic system allows precise control of head unit position while maintaining a relatively simple overall structure, overcoming the precision limitation of static pressing mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise adjustment of the head unit's position, correcting inclination and improving printing quality by allowing for fine and accurate adjustments without increasing production costs.
Implementation Method 1
a guide screw 73, a moving member 72 having a shaft hole (72a) screwed into the guide screw 73 and moving in an axial direction of the guide screw 73 by rotating with respect to the guide screw 73
Data Source
AI summary
An inkjet recording device has a head base, a head unit, and an adjustment mechanism. The adjustment mechanism has a guide screw, a moving member, the operation member for rotating the moving member, and an adjusting member. The moving member has a shaft hole screwed into the guide screw, and moves in an axial direction of the guide screw by rotating with respect to the guide screw. The adjusting member has a first contact portion in contact with the moving member and a second contact portion in contact with the head unit. The second contact portion moves in a direction toward the head unit and a direction away from the head unit, by moving the moving member in contact with the first contact portion in the axial direction of the guide screw.