Print-Head Module Self-Alignment via Gravity Hanging
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Solution Overview
Problem
The setup and adjustment of print-head modules in single-pass inkjet printers are complex and time-consuming due to the need for precise manual alignment, leading to extended downtime and unnecessary complications in replacing modules.
Innovation Solution
A print-head module design featuring gravity-oriented hanging fastening and automatic orientation, allowing for simplified installation, self-adjustment, and alignment without mechanical auxiliary constructions, utilizing connection parts like conical or ball socket bearings for precise positioning and easy exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual adjustment and alignment of print heads is performed to achieve high-quality printed images, then manufacturing precision is improved, but device complexity and setup time increase
Solution Approach 1:
The print head module is designed to automatically align itself with the print medium through gravity-oriented hanging fastening and inherent geometric features, eliminating the need for manual adjustment and external alignment tools. The module self-adjusts to the correct position and orientation when installed.
Solution Approach 2:
The print head module is pre-adjusted and pre-aligned during manufacturing with fixed reference positions established before delivery. This preliminary positioning ensures that when the module is installed, the print heads are already correctly aligned relative to the housing and print medium, requiring no field adjustment.
2Manufacturing precision
If manual adjustment and optical microscope detection is used for print head positioning, then manufacturing precision is improved, but loss of time increases
Solution Approach 1:
The module performs self-positioning through its mechanical design features including hanging fastening geometry and reference surfaces that automatically guide the print heads to their correct positions without requiring external detection equipment or manual measurement.
Solution Approach 2:
The patent replaces the optical microscope detection and manual adjustment system with a purely mechanical self-aligning system using gravity-oriented hanging fastening, geometric reference features, and precision-machined mounting surfaces that provide automatic positional feedback and alignment.
3Adaptability or versatility
If print-head modules are frequently replaced, then adaptability is improved, but loss of time increases due to repeated adjustment
Solution Approach 1:
Each print head module is designed as a self-contained unit with pre-established reference positions and self-aligning features. When a module is replaced, it automatically repositions itself correctly without requiring any adjustment procedures, enabling rapid exchange while maintaining consistent alignment accuracy.
Solution Approach 2:
The housing and connection parts are designed with standardized reference positions and universal mounting interfaces that work with any print head module of the same type. This universality ensures that any module can be quickly swapped in and will automatically align correctly, facilitating frequent replacements without downtime.
4Manufacturing precision
If complicated adjustment procedures are implemented for print head alignment, then manufacturing precision is improved, but ease of operation worsens
Solution Approach 1:
The alignment function is transferred from the operator to the module itself through self-aligning mechanical features. The module automatically achieves correct alignment when installed, eliminating the need for operators to perform complex adjustment procedures while maintaining high alignment accuracy.
Solution Approach 2:
The adjustment function is extracted from the installation process and built into the module design itself. The self-aligning features and fixed reference positions are integrated into the module structure, removing the need for separate adjustment operations and simplifying installation to a single mounting action.
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
Facilitates rapid and straightforward exchange and setup of print-head modules, eliminating the need for manual readjustment and reducing downtime by ensuring consistent and precise alignment of print heads, enhancing printing efficiency and quality.
Implementation Method 1
A print-head module for a single-pass inkjet printer according to the invention can be exchanged rapidly and simply, in particular in a gravity-oriented hanging connection
Data Source
AI summary
A print-head module for a single-pass inkjet printer is specified, which print-head module includes a housing, a hangar part which is fastened to the housing for hanging in a manner which is oriented in the direction of gravity, and a number of print heads which are arranged on the housing along a transverse direction which is perpendicular with respect to a running direction, wherein the print heads are positionally adjusted at least at one reference position. The print-head module can be exchanged simply and rapidly. Complicated re-adjustment on the single-pass inkjet printer can be dispensed with.