Developing Cartridge Gear Structure for Specification Identification
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Solution Overview
Problem
Existing developing cartridges face challenges in identifying varying specifications due to diverse layout patterns of protrusions, necessitating a new gear structure to support the increasing variety of specifications.
Innovation Solution
The developing cartridge incorporates a unique gear structure with a first rotary member and a second rotary member, featuring gear parts and ribs that rotate differently based on their positions and engagement, allowing for adjustable timing of gear interactions to modify the movement of the second rotary member, enabling identification of specifications through distinct rotational patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a new gear structure with multiple rotary members is introduced to support varying specifications, then the adaptability of the developing cartridge is improved, but the device complexity increases
Solution Approach 1:
The gear structure is divided into multiple independent rotary members (first rotary member with first gear part, second rotary member with second gear part) that can rotate independently. Each rotary member has its own gear teeth configuration, allowing them to be detected separately by the sensor to identify different cartridge specifications without requiring a completely new gear structure for each specification.
Solution Approach 2:
The patent introduces dynamic rotational behavior where the second rotary member can rotate independently from the first rotary member under certain conditions. This dynamic independence allows the system to generate different rotational patterns (synchronous rotation, independent rotation, or no rotation) that encode specification information, enhancing adaptability without permanently increasing structural complexity.
2Measurement precision
If multiple rotary members with independent rotation are used to create distinct rotational patterns, then the measurement precision of cartridge specifications is improved, but the difficulty of detecting and measuring increases
Solution Approach 1:
The patent combines the detection of multiple rotary members into a single sensor system. The sensor detects the combined rotational patterns of both rotary members to identify cartridge specifications. This merging approach maintains measurement precision by capturing information from both rotary members while simplifying the detection system compared to using separate sensors for each rotary member.
3Adaptability or versatility
If the second rotary member is designed to rotate independently under certain conditions, then the adaptability for identifying specifications is improved, but the device complexity increases
Solution Approach 1:
The patent implements periodic engagement and disengagement between the two rotary members through their gear teeth interactions. During rotation, the gear teeth periodically engage and disengage, causing the second rotary member to rotate independently at specific intervals while remaining synchronized at other intervals. This periodic action creates distinct rotational patterns that enhance specification identification capability without requiring complex control mechanisms.
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 configuration allows for stable and adaptable identification of developing cartridge specifications, enhancing the ability of image forming apparatuses to differentiate between various cartridges based on rotational patterns and timing, ensuring accurate detection and attachment.
Implementation Method 1
The first gear part includes a plurality of gear teeth. The second gear part includes a plurality of gear teeth. In a case where the first rotary member rotates from the first position to the second position, the second rotary member does not rotate together with the first rotary member in a state where the second rib is in contact with the first rib. In a case where the first rotary member rotates from the second position to the third position, the second rotary member rotates together with the first rotary member in a state where the second rib is not in contact with the first rib.
Data Source
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AI summary
A developing cartridge includes first and second rotary members. The first rotary member is rotatable from a first position to a second position and from the second position to a third position, and includes a first gear part and a first rib. The first rib extends along an addendum circle of the first gear part. The second rotary member includes a second gear part and a second rib protruding outward in a radial direction of the second rotary member. The second rib is in contact the first rib during rotation of the first rotary member from the first position toward the second position. The second rib is separated from the first rib during rotation of the first rotary member from the second position toward the third position.