Single-pass inkjet printer printhead module self-alignment
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Solution Overview
Problem
Single-pass inkjet printers face complex and laborious adjustments of print head modules, leading to increased downtime due to the need for manual alignment under a light microscope and the requirement for frequent adjustments after module replacement.
Innovation Solution
The implementation of a storage area with a protective cover for print head modules, allowing for easy lifting and storage in a vertical orientation, along with a lifting/lowering device that enables reversible and removable storage, and an automated cleaning system to reduce manual intervention and extend maintenance intervals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual adjustment of printhead modules is performed under a light microscope to achieve high positioning precision, then manufacturing precision is improved, but loss of time increases due to the laborious and complex adjustment process
Solution Approach 1:
The printhead module is designed with self-alignment features including guide elements that automatically guide the printhead into the correct position during installation, and a gravity-oriented suspension system that automatically orients the printhead module vertically. This eliminates the need for manual adjustment under a microscope, allowing operators to simply install the module without complex alignment procedures.
Solution Approach 2:
The patent employs a gravity-oriented suspension system where the printhead module hangs vertically from the carriage, using gravity to automatically orient the printhead in the correct position. This creates a natural alignment state where the printhead's center of gravity positions it correctly relative to the print medium, eliminating the need for precise manual positioning.
2Manufacturing precision
If frequent adjustment of printhead modules is performed after replacement to maintain print quality, then manufacturing precision is improved, but productivity deteriorates due to extended downtime
Solution Approach 1:
The self-aligning guide elements and gravity-oriented suspension system ensure that printhead modules automatically assume the correct position and orientation upon installation, eliminating the need for post-replacement adjustment procedures. This allows for rapid module replacement without compromising print quality.
Solution Approach 2:
The printhead module is pre-configured with alignment features and suspension points that ensure correct positioning before installation. The guide elements and gravitational orientation are built into the module design, so that when installed, the alignment is already achieved, preventing the need for subsequent adjustments.
3Manufacturing precision
If complex manual adjustment procedures are implemented to achieve precise printhead positioning, then manufacturing precision is improved, but ease of operation deteriorates
Solution Approach 1:
The system uses self-aligning guide elements and gravity-oriented suspension to automatically position the printhead module correctly during installation. The operator simply needs to install the module, and the self-alignment features handle the precise positioning, making the process as simple as replacing any modular component.
Solution Approach 2:
By using gravity as the orienting force, the system creates a natural, effortless alignment mechanism. The printhead module automatically orients itself vertically when suspended, and the guide elements guide it into the correct horizontal position, requiring no complex manual adjustment procedures from the operator.
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
This solution extends the service life of single-pass inkjet printers by simplifying the adjustment and replacement of print head modules, reducing downtime, and enabling automated cleaning, thus improving operational efficiency and reliability.
Implementation Method 1
In this printer, the printhead modules are suspended in a gravity-oriented vertical orientation (corresponding to the Z-direction in this case)
Data Source
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AI summary
The invention relates to a single-pass inkjet printer (1) comprising a track (3) for guiding a printing medium in the Y direction, a plurality of printing head modules (6) which are arranged one behind the other in the Y direction and a respective plurality of printing heads (14) of which extends in the X direction transversely over the track (3), and a printing region (2) in which the printing head modules (6) can be mounted in a respective printing position (47) in an upright manner substantially in the Z direction and in a reversibly insertable and removable manner along the Z direction. In addition to the printing region (2), the single-pass inkjet printer comprises a storage region (40) in which a number of printing head modules (6) can be mounted in a respective storage position (49) in an upright manner substantially in the Z direction and in a reversibly insertable and removable manner along the Z direction, wherein the printing heads (14) of printing head modules (6) set in the storage position (49) are received in a protective cover (53).