Developer Container Detection Bar for Toner Level Monitoring
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Solution Overview
Problem
Existing image forming apparatuses face challenges in efficiently detecting the remaining amount of toner and determining the presence or absence of the toner storage portion, which complicates the configuration and increases costs.
Innovation Solution
The apparatus incorporates a remaining amount detection bar that receives driving force through the toner storage portion, allowing for the detection of toner levels and the presence of the toner storage container using a common rotating member, simplifying the configuration and enabling downsizing and cost reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate detection mechanisms are used for toner level detection and toner storage presence detection, then detection accuracy is improved, but device complexity increases
Solution Approach 1:
The detection bar is designed to perform multiple functions: it detects both the toner level (by measuring the length of toner contact) and the presence/absence of the toner storage container (by detecting whether any toner is present at all). This single component replaces what would traditionally require separate detection mechanisms, thereby reducing device complexity while maintaining comprehensive detection accuracy.
2Reliability
If multiple detection components are implemented, then detection reliability is improved, but manufacturing cost increases
Solution Approach 1:
The detection bar serves as a universal detection component that reliably performs both toner level measurement and container presence detection through its interaction with the toner. By using a single reliable component rather than multiple components, the manufacturing cost is reduced while detection reliability is maintained through the robust design of the detection bar's interaction with the toner material.
Solution Approach 2:
The patent combines two detection functions (toner level detection and container presence detection) into a single integrated detection bar mechanism. This merging eliminates the need for separate components, thereby reducing manufacturing costs while maintaining reliable detection through the unified design.
3Volume of moving object
If a compact design is implemented, then device size is reduced, but detection capability may be compromised
Solution Approach 1:
The detection bar operates in the vertical dimension by extending into the toner storage container and measuring the length of toner contact. This vertical measurement approach allows for accurate toner level detection without requiring additional horizontal space, thereby maintaining detection capability while achieving a compact overall apparatus design.
Data Source
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AI summary
A developer container includes: a housing having at least one storage chamber (261, 262) for storing developer; a first rotating member (265) extending from a first end portion (265a) to a second end portion (265b) through at least one of the at least one storage chamber (261, 262); a first gear (68G) connected to the first end portion (265a); and a second gear (69G) connected to the second end portion (265b), the first rotating member (265) being configured to transmit driving force from the first gear (68G) to the second gear (69G).