Transfer Belt Driving Control for Color Registration
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Solution Overview
Problem
Conventional color registration correction methods in electro-photographic printers are inefficient, requiring excessive time when the transfer belt is driven at normal speed and result in errors when driven faster, leading to inaccurate color registration.
Innovation Solution
A transfer belt driving control method that sets a pattern forming section and a non-pattern forming section, driving the belt at a first speed during pattern formation and a second, faster speed during non-pattern formation, allowing for accurate color registration correction in a shorter time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the transfer belt is driven at normal speed during color registration correction, then the patterns can be formed and sensed accurately, but the correction process takes much longer time
Solution Approach 1:
The transfer belt driving process is segmented into two distinct phases: a first driving phase at normal speed for accurate pattern formation and sensing, and a second driving phase at faster speed for rapid repositioning. This segmentation allows the system to achieve both measurement precision during pattern formation and reduced time during non-critical transport, resolving the contradiction between accuracy and speed in the color registration correction process
Solution Approach 2:
The transfer belt driving speed is made dynamic rather than static, switching between normal speed and faster speed based on the operational phase. During pattern formation and sensing, the belt operates at normal speed to ensure accuracy; during non-pattern forming sections, it operates at faster speed to reduce overall correction time. This dynamic speed adjustment resolves the contradiction by adapting the speed to the specific requirements of each phase
2Loss of time
If the transfer belt is driven at faster speed than normal, then the correction process time is reduced, but errors occur in pattern formation and sensing
Solution Approach 1:
The correction process is divided into critical phases (pattern formation and sensing) requiring normal speed and non-critical phases (repositioning) allowing faster speed. This segmentation ensures that speed increases only occur when pattern formation and sensing are not active, preventing the errors that would otherwise occur at higher speeds while still reducing overall correction time
Solution Approach 2:
The system performs preliminary actions (pattern formation and sensing) at normal speed before transitioning to faster speed for repositioning. By completing the precision-sensitive operations first at appropriate speed, the system ensures accuracy is maintained while subsequent faster operations do not compromise the already-formed patterns
Data Source
AI summary
A transfer belt driving control method and transfer belt driving control apparatus for color registration correction. The color registration correction method and apparatus performs the color registration correction by setting a pattern forming section, in which patterns for the color registration correction are able to be formed, and a non-pattern forming section, in which the patterns are not able to be formed, on a transfer belt in which the patterns are formed, performing the color registration correction by driving the transfer belt at a first speed in the pattern forming section, and driving the transfer belt at a second speed, which is faster than the first speed, in the non-pattern forming section.