Image Forming Apparatus Toner Authenticity Detection

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Solution Overview

Problem

The use of non-genuine toner in image forming apparatuses often results in poor image quality and potential damage to the photoreceptor, as it lacks the specific features of genuine toner, making it difficult to produce high-quality images and leading to apparatus failures.

Innovation Solution

An image forming apparatus equipped with a determination unit that identifies non-genuine consumables using an IC tag and adjusts image quality by forming specific electrostatic latent images on the photoreceptor, ensuring optimal toner adherence and charge distribution, thereby improving image quality even with non-genuine toner.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If non-genuine toner is used, then cost is reduced, but image quality deteriorates and photoreceptor damage risk increases

Engineering Contradiction:
Improveimage qualityVSAvoidtoner manufacturing complexity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent changes operational parameters (charging performance, transfer characteristics, development conditions) based on whether the toner is genuine or non-genuine. The determination unit identifies toner type, and the image quality adjustment unit modifies charging performance, transfer characteristics, and development conditions accordingly to maintain image quality with non-genuine toner.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent implements a feedback mechanism where the determination unit continuously monitors toner characteristics and provides information to the image quality adjustment unit. Based on this feedback, the system dynamically adjusts charging performance, transfer characteristics, and development conditions to compensate for differences between genuine and non-genuine toner.

Inventive Principle:
Principle #23Feedback

2Reliability

If genuine toner is used, then image quality is maintained, but cost increases

Engineering Contradiction:
Improveimage qualityVSAvoidtoner consumption cost
Core Design Contradiction:
ReliabilityVSQuantity of substance

Solution Approach 1:

The patent adjusts operational parameters based on toner authenticity. When non-genuine toner is detected, the system modifies charging performance, transfer characteristics, and development conditions to optimize image quality, thereby reducing the need to use expensive genuine toner while maintaining acceptable image quality.

Inventive Principle:
Principle #35Parameter changes

3Quantity of substance

If non-genuine toner is used, then cost is reduced, but photoreceptor damage risk increases

Engineering Contradiction:
Improvetoner costVSAvoidphotoreceptor damage
Core Design Contradiction:
Quantity of substanceVSObject-affected harmful factors

Solution Approach 1:

The patent takes preliminary action by detecting toner authenticity before image formation and pre-adjusting operational parameters to prevent photoreceptor damage. The determination unit identifies non-genuine toner, and the image quality adjustment unit preemptively modifies charging performance and development conditions to prevent harmful effects on the photoreceptor.

Inventive Principle:
Principle #9Preliminary anti-action

Solution Approach 2:

The system uses feedback from the determination unit to continuously monitor toner characteristics and adjusts operational parameters in real-time. This feedback mechanism prevents photoreceptor damage by detecting and responding to harmful characteristics of non-genuine toner before they can cause damage.

Inventive Principle:
Principle #23Feedback

4Reliability

If image quality adjustment is performed for non-genuine toner, then image quality is maintained, but device complexity increases

Engineering Contradiction:
Improveimage qualityVSAvoidcontrol system complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements a universal control system that handles both genuine and non-genuine toner through a single integrated approach. The determination unit, image quality adjustment unit, and control unit work together to manage different toner types using the same basic framework, reducing overall system complexity compared to separate control systems for different toner types.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 apparatus effectively maintains high image quality and reduces the risk of failures by adjusting image quality settings based on the type of consumable used, whether genuine or non-genuine, ensuring reliable operation.

Implementation Method 1

the consumable is provided with an IC tag storing information that the consumable is genuine. The determination unit reads the information stored in the IC tag and determines whether the consumable is non-genuine or genuine based on the information

Methodology Applied
Scientific EffectIC tag information storage and reading:

Implementation Method 2

an electrostatic latent image is formed on a photoreceptor, a toner is supplied to be adhered to the electrostatic latent image

Methodology Applied
Scientific EffectElectrostatic charging: Electrostatics

Implementation Method 3

a toner is supplied to be adhered to the electrostatic latent image

Methodology Applied
Scientific EffectElectrostatic attraction: Electrostatics

Data Source

PatentUS7787782B2Image forming apparatus
Publication Date: 2010.08.31 KYOCERA DOCUMENT SOLUTIONS INC
  • US7787782B2 patent drawing
  • US7787782B2 patent drawing
  • US7787782B2 patent drawing

AI summary

The image forming apparatus comprises a replaceable consumable, a determination unit for determining whether the consumable is non-genuine (S12), a first image-quality adjustment unit, and a second image-quality adjustment unit. When the determination unit determines that the consumable is non-genuine (YES in S12), the first image-quality adjustment unit performs an image-quality adjustment suitable for the non-genuine consumable (S13). When the determination unit determines that the consumable is genuine (No in S12), the second image-quality adjustment unit performs an image-quality adjustment suitable for the genuine consumable (S14).