Toner Cartridge Shutter Protrusion for Stable Electrical Contact
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Solution Overview
Problem
Conventional toner cartridges lack a mechanism for stable electrical contact with developing devices, leading to inconsistent communication and data transfer.
Innovation Solution
Incorporating a first protrusion that fixes in position relative to the developing device, allowing an electrical contact surface on the toner cartridge to connect with the device's electrical connector, ensuring stable contact regardless of the cartridge's positional pivot.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the toner cartridge is designed with a movable casing relative to the developing device, then the shutter can open and close the discharge opening, but the electrical contact surface cannot maintain stable contact with the electrical connector
Solution Approach 1:
The toner cartridge is divided into two functional parts: the casing assembly (with movable shutter and discharge opening) and the protrusion assembly (with fixed electrical contact surface). This segmentation allows the casing to pivot for shutter operation while the protrusion maintains fixed positioning relative to the developing device, resolving the contradiction between operational ease and electrical contact reliability.
Solution Approach 2:
The protrusion acts as an intermediary element that bridges the movable casing and the developing device. By extending from the shutter assembly and maintaining fixed positioning, it serves as a stable mediator for electrical contact while allowing the casing to move freely for shutter operation.
2Adaptability or versatility
If the electrical contact surface is positioned on the movable casing, then it moves with the cartridge, but contact stability with the developing device is compromised
Solution Approach 1:
The electrical contact function is separated from the movable casing structure. The protrusion with electrical contact surface is positioned on the shutter assembly rather than the casing, creating functional segmentation that allows independent optimization of both mobility and electrical stability.
3Productivity
If the shutter is positioned closer to the discharge opening, then it can effectively control toner flow, but the electrical contact surface cannot maintain fixed position relative to the developing device
Solution Approach 1:
The protrusion extends in a direction perpendicular to the casing movement, creating a new spatial dimension for electrical contact. This dimensional change allows the electrical contact surface to remain fixed relative to the developing device while the shutter maintains its positioning for effective toner control.
Data Source
AI summary
A toner cartridge includes: a casing extending in a first direction; a toner conveying unit; a first cover; a shutter; a memory; and an electrical contact surface electrically connected to the memory. The casing includes a first toner accommodating portion having an opening. The first cover and the shutter are positioned at one end portion of the first toner accommodating portion in the first direction. The first cover has a discharge opening. The shutter has a shutter opening and a first protrusion extending in the first direction and positioned farther from the one end portion of the first toner accommodating portion than the first cover is in the first direction. When the toner cartridge is mounted to a developing device, the first protrusion is fixed in position relative to the developing device and the casing is pivotable together with the first cover relative to the developing device.