Printing Head FFC Support Reducing Peeling Static
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Solution Overview
Problem
The existing printing apparatuses experience interference from peeling static when the flexible flat cable (FFC) moves with the printing head, which can disrupt signal transmission due to the separation of the flat portion from the support section, leading to potential damage and oscillation of the FFC.
Innovation Solution
The printing apparatus incorporates a support section that contacts the flat portion of the FFC with a shorter width than the cable's orthogonal dimension, reducing peeling static and oscillation by biasing the FFC in the Y-axis direction through a slanted or inclined configuration, thereby minimizing the separation area and stabilizing the cable's movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flat portion of the FFC is supported by a frame with contact width equal to the cable width, then the cable is stable during movement, but peeling static is generated when the cable separates from the support section
Solution Approach 1:
The support section is designed with a contact width that is shorter than the FFC width, creating a localized support region. This local quality difference allows the cable to maintain stability while reducing the peeling area and associated static charge generation during separation movements.
Solution Approach 2:
The support structure is segmented into discrete support sections rather than continuous full-width support. This segmentation reduces the total contact area between the FFC and support section, thereby minimizing peeling static while maintaining adequate cable stability during printing head movement.
2Object-affected harmful factors
If the support section contacts the FFC over the full width of the cable, then peeling static is minimized, but the FFC experiences excessive tension and oscillation during movement
Solution Approach 1:
By providing localized support sections with width shorter than the FFC, the cable is allowed to maintain natural curvature and flexibility. This local support approach reduces excessive tension and oscillation during printing head movement while controlling peeling static through limited contact area.
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 configuration decreases the amount of peeling static and reduces the likelihood of signal interference, stabilizes the FFC during movement, and prevents damage by reducing excessive tension and oscillation, ensuring reliable signal transmission and cable stability.
Implementation Method 1
The flexible flat cable electrically connects the printing head and the controller together so as to enable transmission of control signals
Implementation Method 2
when the curved portion of the FFC undergoes displacement, peeling static arises due to the flat portion separating from the top of the frame
Data Source
AI summary
A printing apparatus includes a printing head, a controller, an FFC, and a support section. The printing head discharges liquid onto a medium while moving in a primary scan direction so as to print an image on the medium. The controller controls a discharge state of the liquid from the printing head. The FFC electrically connects the printing head and the controller together so as to enable transmission of control signals, and includes a flat portion. The support section supports the flat portion of the flexible flat cable. A portion of the support section that contacts the flat portion is shorter than a width of the flexible flat cable in an orthogonal direction orthogonal to the primary scan direction.