Toner Feeding Control for Buffering Space Optimization
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Solution Overview
Problem
Existing electrophotographic image forming apparatuses face challenges in extending the lifetime of residual toner containers due to continuous feeding of transfer residual toner, which leads to ineffective use of space in the developer buffering portion within the process cartridges.
Innovation Solution
An image forming apparatus with a developer buffering portion in the process cartridges that includes a feeding member to control the transfer of residual toner to a developer container, utilizing stored operation information to stop the feeding when the toner level reaches a certain threshold, thereby optimizing the use of space and extending the lifetime of the residual toner container.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If transfer residual toner is continuously fed from the process cartridge to the residual toner container, then the residual toner container can be emptied, but the lifetime of the residual toner container is shortened and the space in the developer buffering portion is unable to be used effectively
Solution Approach 1:
The feeding member is controlled to operate periodically rather than continuously. It feeds residual toner from the developer buffering portion to the residual toner container at specific intervals based on cartridge operation information, allowing the developer buffering portion to accumulate toner effectively while still maintaining the residual toner container at appropriate levels.
Solution Approach 2:
The system uses stored cartridge operation information to monitor and control the feeding process. By tracking operation data, the control system determines when feeding should occur and adjusts the feeding amount accordingly, optimizing both the utilization of developer buffering portion space and the extension of residual toner container lifetime.
2Volume of stationary object
If transfer residual toner is continuously fed from the developer buffering portion to the residual toner container, then the residual toner container maintains adequate space, but the developer buffering portion space is unable to be used effectively
Solution Approach 1:
The feeding control system dynamically adjusts its operation based on cartridge operation information. Rather than using a fixed continuous feeding rate, the system adapts the feeding timing and amount to match actual cartridge usage patterns, maximizing the utilization of developer buffering portion space while maintaining appropriate residual toner levels in the container.
Solution Approach 2:
The system changes the feeding parameters (timing, frequency, amount) based on stored operation information. By varying these parameters according to actual cartridge usage, the system optimizes both the space utilization in the developer buffering portion and the residual toner quantity management in the container.
Data Source
AI summary
An image forming apparatus includes: an image bearing member; a developer carrying member for carrying developer; a cartridge detachably mountable to a main assembly of the image forming apparatus, the cartridge includes a cleaning means for removing the developer remaining on the developer carrying member after a developer image is transferred onto a transfer material, a developer buffering portion for accommodating the developer removed by the cleaning portion, and a feeding member driven for feeding the developer from the developer buffering portion to a developer container provided in the main assembly; a storing portion for storing cartridge operation information; and a controller for controlling the feeding member to stop drive of the feeding member on the basis of the cartridge operation information stored in the storing portion.