Sealed Print Particle Transfer Interface With Rotating Valve
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Solution Overview
Problem
Existing print particle transfer interfaces often result in untrapped volumes and contamination risks due to spillage and trapped air or contaminants, especially in environments like offices or homes where inexperienced users handle print particle bottles.
Innovation Solution
A sealed print particle transfer interface with a rotating cylindrical valve seat and seal component that aligns and seals print particles between a donor and receiving container, ensuring zero or near-zero untrapped volume and preventing contamination by rotating to expose and then re-seal the valve opening, maintaining contact with seal components to prevent leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional print particle transfer interface is used, then particle transfer can be achieved, but untrapped volumes and contamination risks occur due to spillage and trapped air or contaminants
Solution Approach 1:
The transfer interface is segmented into distinct functional zones: a sealed transfer chamber, a valve mechanism with movable barrier, and controlled opening/closing sequences. This segmentation allows the system to isolate particles during transfer while preventing contamination in the untrapped volume, resolving the contradiction between reliable transfer and contamination prevention
Solution Approach 2:
The valve mechanism performs preliminary actions by pre-positioning the movable barrier and pre-sealing the transfer interface before particle transfer begins. This preliminary sealing prevents contamination from entering the untrapped volume during the transfer process, while still allowing complete particle transfer to occur
2Ease of operation
If rapid mating and disconnection is enabled, then ease of operation improves, but contamination risk increases due to potential spillage during quick connection
Solution Approach 1:
The transfer interface incorporates self-sealing mechanisms that automatically engage when containers are mated. The movable barrier and seal components self-adjust to create a sealed connection without requiring manual intervention or slow alignment, enabling rapid mating while preventing spillage through automatic sealing action
Solution Approach 2:
The interface design includes pre-aligned seal surfaces and pre-positioned valve mechanisms that are ready to seal immediately upon container contact. This preliminary preparation allows rapid mating to occur without compromising the sealed transfer, as the sealing action is already primed to engage instantly
3Loss of substance
If complete particle transfer is achieved, then loss of substance is minimized, but untrapped volume remains causing contamination risk
Solution Approach 1:
The movable barrier valve mechanism recovers particles that would otherwise remain in the untrapped volume by actively pushing them back into the source container during the closing sequence. This recovery action ensures complete particle transfer while eliminating contamination risk from residual particles in the untrapped volume
Solution Approach 2:
The valve mechanism incorporates a feedback-controlled closing sequence that monitors the transfer process and adjusts the barrier movement to ensure complete particle transfer. The feedback mechanism detects when transfer is complete and triggers the barrier to push back any remaining particles, eliminating untrapped volume contamination while minimizing particle loss
Data Source
AI summary
Examples of a print particle transfer interface of a donor container are described herein. Some examples of the print particle transfer interface include a static interface portion to engage a receiving container. The static interface portion includes a static opening. Some examples of the print particle transfer interface include a rotating output assembly with a cylindrical valve seat and a seal component surrounding a valve opening. In some examples, the cylindrical valve seat rotates with respect to the static interface portion to align the valve opening for dispensing print particle to the receiving container.