Static Eliminator Voltage Priority for Consistent Sheet Neutralization

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Solution Overview

Problem

Inconsistent settings for sheet neutralization and charge adjustment between the operating unit on the image forming apparatus and the static eliminator lead to user confusion and decreased usability.

Innovation Solution

An image forming system with integrated setting units for the static eliminator and image forming apparatus to synchronize voltage settings for charge eliminating components, ensuring consistent neutralization and charge adjustment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If settings for neutralization and charge adjustment can be made via both the operating unit on the image forming apparatus and the operating unit on the static eliminator, then user flexibility and accessibility are improved, but setting consistency deteriorates leading to user confusion

Engineering Contradiction:

Improvesetting accessibilityVSAvoidsetting consistency

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent merges the setting functions of the static eliminator and image forming apparatus by establishing a master-slave relationship where one operating unit's settings are prioritized over the other. The control unit in the static eliminator receives setting information from both operating units and selectively applies them, ensuring that settings are unified and consistent while maintaining the ability to configure through multiple interfaces.

Inventive Principle:

Principle #5Merging (Combining)

2Ease of operation

If multiple operating units are provided for setting neutralization and charge adjustment parameters, then user accessibility is improved, but system complexity increases

Engineering Contradiction:

Improvesetting accessibilityVSAvoidcontrol system complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The patent introduces a control unit in the static eliminator as an intermediary that mediates between the two operating units. This control unit receives setting information from both the static eliminator's operating unit and the image forming apparatus's operating unit, processes the information according to priority rules, and outputs unified setting information to the charge eliminating component, thereby simplifying the overall control architecture.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Adaptability or versatility

If voltage settings from both operating units are applied to the charge eliminating component, then functional versatility is improved, but setting conflict and confusion increase

Engineering Contradiction:

Improvesetting optionsVSAvoiduser confusion

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

Instead of allowing both operating units to independently control the charge eliminating component (which causes conflicts), the patent inverts the approach by establishing a priority hierarchy where one operating unit's settings take precedence. The control unit determines which setting source has priority and applies only that setting, eliminating conflicts while preserving the versatility of having multiple configuration interfaces.

Inventive Principle:

Principle #13The other way round (Inversion)

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

Enhances usability by ensuring consistent and coordinated neutralization and charge adjustment settings, reducing user confusion and improving operational efficiency.

Implementation Method 1

a charge eliminating component configured to neutralize a sheet having an image formed by the image forming apparatus

Methodology Applied

Scientific EffectElectrostatic neutralization: Electrostatics

Data Source

PatentUS20260079422A1Static eliminator, image forming system, and electric charge adjustment apparatus

Publication Date: 2026.03.19 CANON KK

AI summary

An image forming system includes an image forming apparatus configured to form an image on a sheet, and a static eliminator having a charge eliminating component configured to neutralize a sheet having an image formed by the image forming apparatus. The static eliminator includes a first setting unit configured to set a voltage to be applied to the charge eliminating component. The image forming apparatus includes a second setting unit configured to set a voltage to be applied to the charge eliminating component. The image forming system includes a third setting unit configured to set which voltage is applied as a voltage to be applied to the charge eliminating component, the voltage set by the first setting unit or the voltage set by the second setting unit.