Image Forming Apparatus Maintenance Timing Detection

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Solution Overview

Problem

The existing image forming apparatuses, such as copying machines or printers, face challenges in maintenance workability and increased costs due to the need for frequent replacement of determination components, which deteriorate the operational efficiency and require manual intervention for maintenance timing determination.

Innovation Solution

The design incorporates a process unit with a moving section and positioning mechanism that automatically detects the attachment and detachment of components, using a sensor and pusher mechanism to determine maintenance needs, eliminating the need for manual counter resets and reducing costs by avoiding unnecessary replacement of determination components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a determination component such as a fuse is used to determine timing for maintenance of the process unit, then maintenance timing can be determined, but costs increase and workability is deteriorated because replacement of the determination component is necessary

Engineering Contradiction:

Improvemaintenance timing determinationVSAvoidmaintenance workability

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The system enables automatic detection of process unit attachment and detachment, and automatically performs counter reset operations without requiring manual intervention or replacement of determination components. The image forming apparatus body monitors the process unit status and autonomously manages maintenance timing determination.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces mechanical determination components (such as fuses) with an electronic detection system using sensors and control units. The sensor detects the attachment state of the process unit, and the control unit automatically resets counters, eliminating the need for physical component replacement.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If manual counter reset for determining timing for maintenance is performed, then maintenance timing can be determined, but workability during maintenance is deteriorated

Engineering Contradiction:

Improvemaintenance timing determinationVSAvoidoperational efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system performs automatic counter reset operations through the image forming apparatus body when the process unit is attached, eliminating the need for manual intervention. The control unit autonomously manages maintenance timing determination, improving operational efficiency.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The sensor provides feedback about the process unit attachment state to the control unit, which then automatically resets the counter. This closed-loop feedback system ensures accurate maintenance timing determination without manual intervention.

Inventive Principle:

Principle #23Feedback

3Measurement precision

If determination components are frequently replaced, then maintenance timing can be accurately determined, but costs increase

Engineering Contradiction:

Improvemaintenance timing detection accuracyVSAvoidreplacement component costs

Core Design Contradiction:

Measurement precisionVSLoss of substance

Solution Approach 1:

The patent replaces physical determination components (fuses) with an electronic sensor-based detection system. The sensor detects process unit attachment states, and the control unit manages counter reset operations, eliminating the need for frequent component replacement and reducing costs.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system uses electronic detection and data storage to replicate the function of physical determination components. Instead of replacing physical fuses, the control unit stores and manages maintenance counter data electronically, achieving the same measurement precision without material consumption.

Inventive Principle:

Principle #26Copying

Data Source

PatentUS8818213B2Image forming apparatus that detects timing for maintenance

Publication Date: 2014.08.26 KK TOSHIBA

AI summary

According to one embodiment, a process unit includes a process section present around an image bearing member, attached and detached to and from a body, including a rotating section, and configured to apply an image forming process to the image bearing member, a moving section present on a shaft of the rotating section and configured to slide to a first position close to the rotating section and a second position away from the rotating section, and a positioning section present between the rotating section and the moving section and configured to move following the rotating section and hold the moving section in the first position and the second position.