Paper Dispenser Guide Plate Axle Sensor Detection

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Solution Overview

Problem

Self-service machines often experience issues with premature paper removal or blockages at the paper output, leading to incorrect printing, paper jams, and potential damage to the printer or other components.

Innovation Solution

A paper dispenser with a movable guide plate and sensors to detect premature paper removal and blockages, where the guide plate's position and rotation are monitored by sensors to prevent damage and ensure proper paper dispensing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a paper output device with detection means is provided to detect premature paper removal or blockages, then reliability is improved, but device complexity increases

Engineering Contradiction:

Improvedetection of premature paper removal and blockagesVSAvoidstructure of paper output device

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

A guide plate is introduced as an intermediary element between the paper path and the detection system. The guide plate translates paper removal events into axial displacements and blockages into rotational movements of the axle, which can then be detected by sensors. This mediator converts complex paper handling events into simple mechanical movements that are easy to detect.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces complex mechanical detection mechanisms with a simplified system based on sensor detection of axle position and rotation. Instead of using elaborate mechanical linkages or switches, the solution uses modern sensors to detect the axial and rotational movements of the axle, reducing mechanical complexity while improving reliability.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Difficulty of detecting and measuring

If the guide plate is made movable to detect paper removal, then detection capability is improved, but manufacturing precision requirements increase

Engineering Contradiction:

Improvedetection of paper removalVSAvoidmounting precision of axle in guide groove

Core Design Contradiction:

Difficulty of detecting and measuringVSManufacturing precision

Solution Approach 1:

The detection system monitors the axle in two independent dimensions: axial displacement (along the guide groove) and rotational position (around the axle axis). By separating these two detection dimensions, the system can detect different types of paper handling events (removal vs. blockage) independently, reducing the precision requirements for each individual measurement while maintaining overall detection accuracy.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP2980000B1Paper dispenser

Publication Date: 2017.04.05 MCS MICRONIC COMP SYST

AI summary

The invention relates to a paper dispensing device comprising: a dispensing opening (5) for removing a sheet and a movable guide plate (10) for guiding the sheet to the dispensing opening, wherein the guide plate is attached to at least one axis (11). The axis is slidably and rotatably mounted in a guide groove. Depending on where the sheet presses against the guide plate, the axis is either displaced or rotated, wherein a first sensor is provided for detecting a position of the axis in the guide groove and a second sensor is provided for detecting a rotational position of the axis in the guide groove.