Hooked Wiper for Inkjet Printhead Cleaning
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Solution Overview
Problem
Existing printhead cleaning systems in inkjet printers require solvents and complex wiper mounting, leading to increased costs and maintenance complexity due to the need for multiple wipers and solvent application.
Innovation Solution
A single-wiper system with a hooked end and flanges forming a C-shaped opening, mounted within a C-shaped slot, allowing for solvent-free cleaning and simplified installation, utilizing a translating mechanism to move the wiper along the printhead faceplate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional two-wiper system with solvent application is used, then cleaning effectiveness is improved, but device complexity and maintenance cost increase
Solution Approach 1:
The patent combines the functions of two separate wipers (spreading solvent and removing debris) into a single wiper system. The single wiper integrates both cleaning actions, eliminating the need for separate wiper components, actuators, and mechanical linkages, thereby reducing system complexity while maintaining cleaning effectiveness
Solution Approach 2:
The patent extracts and eliminates the solvent application system from the cleaning mechanism. By removing the solvent reservoir, applicator, and associated actuators, the system achieves solvent-free cleaning, significantly reducing device complexity and maintenance requirements while still effectively removing ink and debris
2Reliability
If multiple wipers are used for different cleaning functions, then cleaning performance is improved, but ease of repair deteriorates
Solution Approach 1:
By merging the functions of multiple wipers into a single wiper component, the system eliminates the need to manage multiple wear-prone parts. When maintenance is needed, only one wiper requires replacement rather than multiple wipers, significantly improving ease of repair and reducing maintenance complexity
Solution Approach 2:
The single wiper is designed to perform multiple cleaning functions simultaneously - both spreading cleaning fluid and removing debris. This multi-functional design eliminates the need for specialized wipers for different tasks, simplifying the replacement process and improving maintenance simplicity
3Adaptability or versatility
If wiper adjustment mechanisms are added to accommodate wear, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements a dynamic mounting system where the wiper can be easily adjusted along the mounting member to accommodate wear. The adjustable design allows the wiper position to be changed without complex mechanisms, maintaining adaptability while minimizing added complexity through simple, straightforward adjustment features
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 efficient printhead cleaning without solvents and simplifies wiper mounting, reducing maintenance costs and complexity by using a single wiper with a flexible material that retains engagement with the faceplate, effectively removing ink and debris without the need for solvent application.
Implementation Method 1
a translating mechanism to move the hooked end of the wiper body along the faceplate of the printhead to wipe at least a portion of the faceplate
Data Source
AI summary
A wiper configuration enables a single wiper to clean a faceplate of a printhead in a printer without requiring solvent to prepare the printhead faceplate. The wiper configuration includes a wiper having a hooked end, a mounting bar, and a reinforcing bar. The wiper has two flanges that form a recess that receives the mounting bar so the wiper can be mounted to the mounting bar without the use of threaded members or other fasteners. A pivot in the mounting member is positioned at a predetermined distance from the hooked end of the wiper that is approximately ten times the radius of the internal curvature of the hooked end.