Rotating Applicator Face for Precision Cosmetic Deposition
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Solution Overview
Problem
Existing cosmetic deposition devices lack the ability to efficiently and accurately apply cosmetic styles on facial features without smudging, as they are limited by fixed orientations and lack precise control over the applicator face's rotation and alignment.
Innovation Solution
A cosmetic deposition device with a rotating applicator face, equipped with magnets and springs for secure alignment and a mechanism to detect rotational positions, allows for independent rotation of the applicator face relative to the housing, ensuring the roller follows behind the nozzles, and a computing device provides instructions for precise application based on surface features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the applicator face is fixed in a single orientation, then the device structure is simple, but the device cannot accurately apply cosmetic styles on different facial features without smudging
Solution Approach 1:
The applicator face is made rotatable relative to the housing, transforming from a fixed to a dynamic configuration. This allows the applicator face to be rotated to different orientations (e.g., 0°, 45°, 90°, 135°) to match the direction of movement required for different facial features, thereby achieving accurate cosmetic application without smudging while managing structural complexity through a controlled rotation mechanism with detents.
2Ease of operation
If the applicator face can rotate independently, then the cosmetic application accuracy is improved, but the device complexity increases due to additional alignment and detection mechanisms
Solution Approach 1:
The rotation mechanism incorporates magnets on the applicator face and corresponding magnets or magnetic detectors on the housing, along with springs that provide detents at specific rotational positions. This self-aligning mechanism automatically guides the applicator face to the correct orientation through magnetic attraction and spring detents, eliminating the need for complex external alignment procedures or continuous active control, thus improving ease of operation while managing device complexity.
3Measurement precision
If magnets and springs are added for rotation control, then the applicator face alignment precision is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The patent replaces complex mechanical position detection systems with a magnetic field-based detection system. Magnets are placed on the applicator face, and their positions are detected by magnetic sensors or detectors on the housing, eliminating the need for complex mechanical encoders or switches. This substitution provides precise rotational position detection (detecting when the applicator face reaches predetermined positions) while reducing mechanical complexity and improving reliability.
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 precise and smudge-free application of cosmetic styles on facial features by allowing the applicator face to rotate independently and align correctly, ensuring the roller always follows behind the nozzles, enhancing usability and cosmetic application accuracy.
Implementation Method 1
one or more magnet on the applicator face and one or more magnet on the housing, wherein the one or more magnet on the applicator face and the one or more magnet on the housing provide an attraction force to detain the applicator face with respect to the housing
Implementation Method 2
one or more spring on the applicator face and one or more slot on the housing, wherein the one or more spring on the applicator face and the one or more slot on the housing detain the applicator face at the more than one rotation setting when the one or more spring is engaged on the one or more slot
Data Source
AI summary
A cosmetic deposition device comprises a housing; a printhead within the housing, the printhead including one or more nozzle to dispense one or more formulation; an applicator face connected to the housing, wherein an exterior side of the applicator face includes a roller adjacent to the one or more nozzle, and the applicator face is configured to rotate with respect to the housing, and the applicator face is detained at more than one rotational setting with respect to the housing.