Stacker Module Forced Air Flip Assist for Thin Media

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Solution Overview

Problem

Thinner, lighter, and larger print media cause malfunctions such as paper jams and wrinkles in printer modules due to insufficient beam strength and increased susceptibility to humidity, which existing stacker modules struggle to handle effectively.

Innovation Solution

An improved stacker module with forced air flip assist, utilizing rotating discs with elastomer rings to secure the print media and a blower-controlled air duct to levitate the trailing edge, ensuring successful flipping and stacking of lighter, thinner media even in high humidity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If thinner, lighter, and larger print media are used to save cost, then cost is reduced, but the print media lacks sufficient beam strength and stiffness causing malfunctions and paper jams

Engineering Contradiction:
ImprovecostVSAvoidbeam strength
Core Design Contradiction:
Quantity of substanceVSStrength

Solution Approach 1:

The patent introduces a pneumatic system with air ducts and blowers that generate airflow to levitate and support the trailing edge of print media during the flipping process. This pneumatic assistance compensates for the insufficient beam strength and stiffness of thinner, lighter media, enabling them to complete the flipping operation without collapsing or jamming, thus allowing cost savings from using lighter media while maintaining operational reliability

Inventive Principle:
Principle #29Pneumatics and hydraulics

2Quantity of substance

If thinner, lighter, and larger print media are used to save cost, then cost is reduced, but the print media becomes more prone to wrinkles and ripples in high relative humidity

Engineering Contradiction:
ImprovecostVSAvoidwrinkles and ripples
Core Design Contradiction:
Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The pneumatic system provides continuous airflow support during the flipping process, which stabilizes the print media and prevents the formation of wrinkles and ripples. The airflow acts as a stabilizing force that counteracts the media's susceptibility to humidity-induced deformation, allowing thinner media to be processed without compromising surface quality or causing malfunctions in high humidity environments

Inventive Principle:
Principle #29Pneumatics and hydraulics

3Device complexity

If existing stacker modules are used with lighter print media, then device complexity is maintained, but the modules struggle to handle lighter, thinner media effectively

Engineering Contradiction:
Improvemodule structureVSAvoidhandling capability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The patent enhances the existing stacker module by integrating pneumatic components (air ducts and blowers) that provide targeted airflow support during the flipping operation. This addition enables the module to handle lighter, thinner media effectively without requiring a complete redesign of the mechanical stacking mechanism, thus improving reliability while maintaining reasonable device complexity

Inventive Principle:
Principle #29Pneumatics and hydraulics

Solution Approach 2:

The system dynamically adjusts operational parameters by controlling the airflow magnitude and duration during the flipping process. The pneumatic system provides variable support based on the specific requirements of the media being processed, allowing the module to adapt to different media weights and thicknesses without changing the fundamental mechanical structure

Inventive Principle:
Principle #35Parameter changes

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

The solution prevents print media collapse during flipping, reduces jamming, and maintains module functionality with lighter, thinner print media, even in high humidity conditions, by using air flow to support and stabilize the media during the flipping process.

Implementation Method 1

an air duct to force an air flow towards the print media to levitate a trailing edge of the single sheet during completion of the flipping process

Methodology Applied
Scientific EffectAir flow levitation: Acoustic Levitation

Data Source

PatentUS10005632B1Stacking module with forced air flip assist
Publication Date: 2018.06.26 XEROX CORP
  • US10005632B1 patent drawing
  • US10005632B1 patent drawing
  • US10005632B1 patent drawing

AI summary

An apparatus is disclosed. For example, the apparatus includes a paper feed to feed print media a single sheet at a time, a plurality of rotating discs, wherein each one of the plurality of rotating discs comprises an elastomer ring to secure a leading edge of the single sheet against a registration wall and initiate a flipping process, an air duct to force an air flow towards the print media to levitate a trailing edge of the single sheet during completion of the flipping process, and a movable platform to hold a stack of the print media.