Inkjet Wiper Blade Reaction Force Control
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Solution Overview
Problem
Existing inkjet recording devices face issues with incomplete nozzle surface cleaning due to insufficient contact pressure from wiper blades, leading to ink droplet contamination and scattering, and the complexity and cost of wiper member structures with separate ink absorbing and wiping sections.
Innovation Solution
An inkjet recording device with a wiper blade and a reaction force eliminating member, where the wiper blade is made of an elastic material and the reaction force member has a spring characteristic, both standing upright on a supporting unit with convex parts to absorb the reaction force of the wiper blade, ensuring complete nozzle surface wiping and preventing ink droplet scattering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If the wiper blade is made of elastic material to ensure complete nozzle surface wiping, then the contact pressure is improved, but the reaction force generated during restoration causes ink droplet scattering
Solution Approach 1:
A reaction force eliminating member is introduced as an intermediary component between the wiper blade and the recording head. This member absorbs the reaction force generated when the elastic wiper blade restores after wiping, preventing the force from causing ink droplet scattering while maintaining the elastic material's wiping effectiveness.
2Object-generated harmful factors
If the wiper blade separates from the nozzle surface before the end to prevent ink scattering, then the harmful effect is reduced, but the cleaning completeness deteriorates
Solution Approach 1:
The reaction force eliminating member acts as a mediator that allows the wiper blade to maintain contact with the nozzle surface throughout the entire wiping path. By absorbing the restoration reaction force, it enables complete wiping without premature separation, thus achieving both thorough cleaning and preventing ink scattering.
3Reliability
If a complex wiper member structure with separate ink absorbing and wiping sections is used, then the ink absorption capability is improved, but the device complexity and cost increase
Solution Approach 1:
The ink absorption function is extracted from the wiper member structure and assigned to a separate ink absorbing member. This separation allows the wiper blade to be optimized solely for wiping functionality with simple structure, while the dedicated ink absorbing member handles ink absorption, reducing overall device complexity compared to integrated designs.
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
The solution ensures thorough nozzle surface cleaning with stable ink droplet absorption, preventing contamination and improving image quality by controlling the reaction force generated during wiper blade restoration.
Implementation Method 1
a wiper blade made of an elastic body and formed in a flat plate shape for wiping a nozzle surface of the recording head
Implementation Method 2
the reaction force eliminating member has a spring characteristic
Data Source
AI summary
In an inkjet recording device, ink droplets remaining on a nozzle surface are wiped off and the wiped off ink droplets are prevented from being scattered so as to stably form good quality images. When the wiper blade wiping the nozzle surface of the recording heads to wipe off the ink droplets and the like is separated from the nozzle surface and the bend of the wiper blade is straightened to restore to its idle position, a reaction force eliminating member absorbs the reaction force generated and softly restores the wiper blade to its idle position. As a result, the reaction force caused when the bend of the wiper blade is suddenly straightened is controlled, thereby preventing the ink drops and foreign matter on the header of the wiper blade from being scattered and avoiding the contamination of the inside of the inkjet recording device.