Toner Cartridge Ejection Control via CRUM Chip Permissions
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Solution Overview
Problem
Existing image forming devices have limited flexibility in product marketing for toner cartridges, as they are not easily manually extractable after sale, restricting user convenience and marketing options.
Innovation Solution
An image forming device with a consumable article container housing portion, a pushing-out unit, and a storage member that allows manual extraction of toner cartridges, using a CRUM chip or EEPROM to control the ejection mechanism based on stored permission information, enabling different ejection modes and positions for various cartridges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a toner cartridge is designed to be manually extractable after sale, then user convenience and marketing flexibility are improved, but the device cannot utilize automatic ejection mechanisms
Solution Approach 1:
The patent applies dynamics by making the cartridge extraction capability adjustable rather than fixed. The system can dynamically switch between manual extraction mode (for marketing flexibility) and automatic ejection mode (for user convenience), depending on the cartridge type and sales strategy. This is achieved through a controller that receives cartridge identification information and selectively activates the ejection mechanism or permits manual removal.
Solution Approach 2:
The patent changes the parameter of extraction controllability based on cartridge identification. By reading stored information from the cartridge (such as CRUM chip data), the system adjusts its behavior: some cartridges are configured for automatic ejection while others are set for manual extraction only. This parameter change enables the device to accommodate different marketing strategies and cartridge types.
2Productivity
If an automatic ejection mechanism is implemented, then productivity and user convenience are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent applies self-service by using the cartridge's own stored information (in its CRUM chip or memory) to control the ejection process. The cartridge essentially identifies itself and triggers the appropriate extraction method based on its programmed characteristics. This reduces the need for complex external control systems while maintaining automatic ejection functionality for suitable cartridges.
Solution Approach 2:
The patent makes the housing portion universal by designing it to accommodate both automatic ejection and manual extraction functions. The same housing structure serves multiple purposes: it can interact with the ejection mechanism when needed, or simply provide a removable barrier for manual access. This multi-functionality reduces the need for separate specialized components.
3Ease of operation
If manual extraction is permitted for all cartridges, then ease of operation is improved, but automatic ejection control and monitoring capabilities are lost
Solution Approach 1:
The patent implements feedback by having the controller continuously monitor cartridge identification information and the state of the housing portion. The system receives feedback from the cartridge's stored data about whether manual extraction is permitted, and accordingly controls access to the housing. This feedback loop ensures that ease of operation is provided only when appropriate, while maintaining accurate tracking of ejection permissions.
Data Source
AI summary
An image forming device includes a toner cartridge which is housed in a cartridge housing portion, and a pushing-out unit, and the toner cartridge includes a CRUM chip. The CRUM chip stores specific information about whether the toner cartridge can be extracted at a housed position where the toner cartridge is housed in the cartridge housing portion. The pushing-out unit pushes-out the toner cartridge in a direction that the toner cartridge can be extracted from the cartridge housing portion in a case where the specific information indicates that the toner cartridge cannot be extracted at the housed position.