Developing Cartridge Memory Holder Layout for Compact Mounting
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Solution Overview
Problem
The conventional developing cartridge design increases the dimension in the first direction due to the positioning of the holder that holds the memory outside the gear cover, which is not optimal for space efficiency.
Innovation Solution
The developing cartridge incorporates a holder structure that is movable relative to the housing, with the electrical contact surface positioned at one end, allowing for reduced dimensions in both the first and second directions by overlapping the holder with the gear cover and utilizing a spring mechanism for expansion and contraction, along with a protrusion from the drum frame to guide and limit the holder's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the holder that holds the memory is positioned outside the gear cover in the first direction, then the electrical contact surface can be easily accessed, but the dimension of the developing cartridge in the first direction is increased
Solution Approach 1:
The holder is positioned inside the gear cover, nesting the memory holder within the existing gear cover structure. This eliminates the need for the holder to extend outside the gear cover in the first direction, thereby reducing the overall dimension of the developing cartridge while still allowing the electrical contact surface to be accessed through the gear cover opening.
2Ease of operation
If the holder is positioned outside the gear cover, then the memory can be easily contacted, but the space efficiency of the developing cartridge is reduced
Solution Approach 1:
The holder is nested within the gear cover structure, utilizing the existing space within the gear cover rather than extending outside it. This nesting approach maintains the ability to contact the memory through the gear cover opening while improving the space efficiency and compactness of the overall developing cartridge.
3Length of moving object
If the holder is made movable relative to the housing, then the dimension can be reduced, but the structure becomes more complex
Solution Approach 1:
The holder is designed to be movable relative to the housing along the first direction, allowing it to extend or retract as needed. This dynamic positioning enables the holder to be compact when retracted (reducing dimension) while still being able to extend to provide electrical contact when needed, balancing dimensional reduction with functional requirements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design effectively reduces the overall dimension of the developing cartridge in both the first and second directions, enhancing space efficiency and facilitating smoother mounting to the drum cartridge.
Implementation Method 1
the holder includes a first holder having the first end portion, a second holder having the second end portion, and a spring located between the first end portion and the second end portion and configured to expand and contract in the second direction
Data Source
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AI summary
A developing cartridge (1) includes a housing (10), a developing roller (30), a gear (42), a memory (50), and a holder (60). The developing roller (30) rotates about a developing axis (L2) extending in the first direction. The memory (50) has an electrical contact surface (51). The holder (60) holds the electrical contact surface (51). The holder (60) is movable with respect to the housing (10). The holder (60) has a first end portion (610) and a second end portion (620) that is separated from the first end portion (610) in the second direction. The second end portion (620) and the gear (42) are arranged in the second direction.