Front-Interchangeable Inkjet Print Head Mounting Assembly
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Solution Overview
Problem
The compact design of existing inkjet printer modules makes it difficult and time-consuming to replace print heads, especially when access is limited from the top, leading to inefficiencies in maintenance and increased repair time.
Innovation Solution
The print head replacement is facilitated by a front-accessible design with a support frame and mounting assembly that allows for front-side insertion and temporary fixation, enabling easy removal and installation without relying solely on top access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the print module is designed compactly with components stacked one above the other, then space is saved and material costs are reduced, but access to the top becomes limited making print head replacement difficult and time-consuming
Solution Approach 1:
The mounting means is divided into two distinct functional parts: device means for releasable fixation (screws, clips) and coupling means for temporary fixation (lugs, recesses). This segmentation allows the print head to be temporarily secured during insertion while enabling easy final fixation, resolving the contradiction between compact design and repair ease.
Solution Approach 2:
Instead of requiring top access for print head replacement as in conventional designs, the invention enables front-side access for both temporary and final fixation. The coupling means oriented downwards and device means accessible from the front invert the traditional access direction, making replacement easier despite compact design.
2Productivity
If the print module is made compact, then production efficiency is improved, but maintenance efficiency deteriorates due to limited access
Solution Approach 1:
The coupling means for temporary fixation are designed to be engaged first during print head installation, securing the print head in position before the device means for releasable fixation are applied. This preliminary action streamlines the replacement process, reducing maintenance time while maintaining compact design.
Solution Approach 2:
The invention extracts the fixation function into separate, specialized means (coupling means and device means) that can be independently optimized. The coupling means are specifically designed for quick temporary engagement, separating this function from the final fixation process and enabling faster maintenance operations.
3Ease of operation
If the print head is inserted from the front against gravity, then front-side replacement is enabled, but the print head may release due to downward gravitational force
Solution Approach 1:
The coupling means are oriented downwards to provide upward support against the downward force of gravity on the print head. This orientation creates a counterbalancing effect that prevents gravitational release, enabling front-side insertion while maintaining reliable retention.
Solution Approach 2:
The coupling means feature curved or rounded surfaces that facilitate smooth engagement and provide mechanical advantage in resisting gravitational forces. The curved geometry of the coupling means and counter-coupling means creates a self-locking effect that enhances retention reliability.
Data Source
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AI summary
The invention relates to a printing module, comprising an assembly arranged on the front side for mounting a printing head in an inkjet printer, wherein the printing module is arranged at a distance in relation to a depositing device and the assembly has a carrier frame having an opening, which extends through the carrier frame and is provided for receiving/discharging the printing head, wherein the assembly has means for mounting the printing head, which make it possible to receive the printing head on the front side in a repair position of the printing module in relation to the depositing device.