Displaceable Member Detection for Image Forming Apparatus
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing image forming apparatuses face challenges in determining whether a developing device is new or used, leading to potential image quality issues due to deteriorated components and inefficient maintenance processes.
Innovation Solution
The apparatus includes a detection portion and control portion that utilize a displaceable member to determine the installed state of the developing device, distinguishing between new and used devices based on detection by a detection switch, allowing for accurate identification and replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a developing device is replaced after a predetermined period to maintain image quality, then image quality is maintained, but device complexity and maintenance cost increase
Solution Approach 1:
The patent applies preliminary action by marking the displaceable member in advance during manufacturing. The mark is positioned such that it is detectable by the detection portion when the member is in its initial position, allowing the system to automatically identify new developing devices without requiring complex tracking or labeling processes during maintenance operations.
Solution Approach 2:
The patent replaces complex mechanical tracking systems with a simpler optical or electrical detection system. Instead of using mechanical counters, sensors, or complex marking mechanisms to track device usage, the invention uses a detection portion that senses the position of a mark on the displaceable member, significantly simplifying the maintenance and identification process.
2Adaptability or versatility
If the developing device includes an integral toner storing portion, then self-contained functionality is improved, but the device cannot perform development when toner runs out, requiring replacement
Solution Approach 1:
The patent applies dynamics by making the displaceable member movable between positions. This dynamic element allows the system to change its state based on toner availability - when the member is in the initial position, the device is functional; when displaced, it indicates toner exhaustion. This dynamic marking system enables the device to communicate its operational status without requiring external monitoring systems.
3Measurement precision
If a detection system is added to determine container usage state, then maintenance accuracy is improved, but device complexity increases
Solution Approach 1:
The patent extracts the detection function from a complex integrated system and separates it into a simple, standalone detection portion. Instead of requiring complex sensors, processors, or communication systems to determine container usage, the invention uses a simple detection mechanism that senses the position of a mark on the displaceable member, significantly reducing system complexity while maintaining high measurement precision.
4Ease of manufacture
If manual inspection of developing device is performed, then cost is reduced, but time consumption and labor requirements increase
Solution Approach 1:
The patent applies self-service by enabling the developing device to self-identify its usage state through the displaceable member and detection portion system. The device automatically signals whether it is new or used without requiring manual inspection, reducing both labor costs and maintenance time. The system serves itself by providing automatic status identification that eliminates the need for human intervention in the detection process.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An image forming apparatus (10) includes a container (71) that can store developer; an apparatus body (11) by which the container is detachably supported; a detection portion (120), for determining an installed state of the container, provided for the apparatus body; and a control portion (100) determining whether the container is unused based on a detection result by the detection portion. The container includes a displaceable member (90) displaced between an initial position where the displaceable member is not detected by the detection portion and a detection position where the displaceable member is detected by the detection portion. When the container is in an initial installation state immediately after being installed in the apparatus body, the control portion determines the container is unused in a case where the displaceable member is not detected by the detection portion, and determines the container is used in a case where the displaceable member is detected by the detection portion.