Motor Controller Synchronization for Color Registration in Image Forming Apparatus
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Image forming apparatuses face challenges in maintaining precise color registration due to periodic velocity variations in photosensitive media, leading to color dislocation issues, which are costly to address with conventional methods requiring independent control of each motor.
Innovation Solution
An image forming apparatus that controls the velocity and phase of multiple motors based on one motor's periodic velocity, using a motor controller to synchronize phases and apply feed-forward control to minimize color dislocation, thereby reducing the need for independent motor control and associated costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If independent control is applied to each motor to compensate for velocity variations, then color registration precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent merges the control of multiple motors by using one motor's velocity information to control the other motors. Specifically, the controller obtains velocity information from a first motor and uses this information to control second and third motors, thereby reducing the need for independent velocity detection and control for each motor. This consolidation reduces system complexity while maintaining color registration precision.
Solution Approach 2:
The controller is designed to perform multiple functions: it controls the first motor directly while also using the first motor's velocity information to control the second and third motors. This multi-functional approach eliminates the need for separate velocity detection systems for each motor, reducing overall device complexity while preserving the ability to achieve precise color registration.
2Manufacturing precision
If independent control is applied to each motor to compensate for velocity variations, then color registration precision is improved, but operational cost increases
Solution Approach 1:
The patent merges the control of multiple motors by using one motor's velocity information to control the other motors. Specifically, the controller obtains velocity information from a first motor and uses this information to control second and third motors, thereby reducing the need for independent velocity detection and control for each motor. This consolidation reduces system complexity while maintaining color registration precision.
Solution Approach 2:
The controller is designed to perform multiple functions: it controls the first motor directly while also using the first motor's velocity information to control the second and third motors. This multi-functional approach eliminates the need for separate velocity detection systems for each motor, reducing overall device complexity while preserving the ability to achieve precise color registration.
3Reliability
If velocity variation compensation is implemented for each motor, then color dislocation is minimized, but system complexity increases
Solution Approach 1:
The patent implements feedback control by continuously obtaining velocity information from the first motor and using this feedback to adjust the control signals for the second and third motors. This feedback mechanism ensures that velocity variations are compensated for in real-time, maintaining color registration precision while reducing the need for complex independent control systems for each motor.
Data Source
AI summary
An image forming apparatus includes an image forming unit configured to perform a printing operation by using a plurality of photosensitive media, a plurality of motors configured to drive the plurality of photosensitive media, and a motor controller configured to control a phase and a velocity of the other motor based on a periodic velocity of one motor from among the plurality of motors.