Separator Assembly Corner Relief Features
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Solution Overview
Problem
Printing devices often experience media jams and damage to printed output due to corner folds, leading to consumer frustration, increased warranty costs, and device returns, as they struggle to handle various media sizes and types effectively.
Innovation Solution
The media handling assembly incorporates a separator assembly with corner relief features and a pick assembly that delays corner contact with the separator wall until the sheet is bent, using elastomeric materials and guides to minimize damage and jams, allowing for efficient handling of different media sizes and types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separator assembly with corner relief features is used to delay corner contact with the separator wall, then media damage and jams are reduced, but the device complexity increases
Solution Approach 1:
The separator assembly is divided into multiple functional segments: corner relief features that delay corner contact, a separator wall that guides the media, and a pick assembly that selects individual sheets. This segmentation allows each component to perform its specific function optimally while reducing overall media damage and jams.
Solution Approach 2:
The corner relief features act as an intermediary element between the media corners and the separator wall. By introducing this intermediate structure, the patent prevents direct contact between corners and the wall, thereby reducing damage and jams while maintaining effective media guidance.
2Manufacturing precision
If elastomeric materials and guides are used to minimize damage and jams, then media handling quality improves, but manufacturing cost increases
Solution Approach 1:
The patent employs elastomeric materials with specific physical parameters (flexibility, friction coefficients) to optimize media handling. By carefully selecting and adjusting these material parameters, the system achieves precise media control and minimal damage while maintaining reasonable manufacturing costs through standardized material choices.
3Reliability
If the pick assembly delays corner contact until the sheet is bent, then corner folds are prevented, but the handling time increases
Solution Approach 1:
The separator assembly and pick assembly are pre-configured to guide the media in a specific manner that pre-prevents corner folds before they can occur. The corner relief features are positioned in advance to delay corner contact, and the pick assembly is pre-positioned to bend the sheet at the correct moment, thereby preventing corner folds without significant time loss.
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 solution significantly reduces media jams and damage, maintaining print quality and throughput, thereby enhancing consumer satisfaction and reducing business costs associated with warranty support and device returns.
Implementation Method 1
using elastomeric materials and guides to minimize damage and jams
Data Source
AI summary
A separator assembly is disclosed herein. An example includes a base to mount to a printing device and a wall supported by the base. The example also includes a singulation assembly adjacent the wall to separate a medium from a media stack and a ramp adjacent the singulation assembly to guide the medium from the media stack to a feed assembly. The example further includes a corner relief feature on either side of and below the ramp into which corners of the medium may drop and travel below a remainder of the medium as the medium is guided from the media stack to the feed assembly and a guide adjacent each corner relief feature to lift the corners of the medium out of the corner relief features before the medium enters the feed assembly. A media handling assembly is also disclosed herein as is a method of media handling.