Polygon Motor Control for Image Formation Apparatus
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Solution Overview
Problem
Conventional image formation apparatuses experience unnecessary standby time due to the need to sense sheet types before controlling the polygon motor's rotation speed, which is inefficient and wasteful.
Innovation Solution
An image formation apparatus with a controller that operates in two modes: one where no sheet type is sensed and another where a sheet type is sensed, allowing for different control processes for the polygon motor's rotation, including a preliminary rotation speed before sheet type sensing and an exposure rotation speed based on the sensed type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sheet type sensing is performed before controlling polygon motor rotation speed, then the motor rotation can be optimized for the specific sheet type, but unnecessary standby time is introduced when sheet sensing is not required
Solution Approach 1:
The system dynamically switches between two operational modes: a first mode where the polygon motor rotates at a predetermined speed without sheet sensing, and a second mode where sheet type sensing is performed and motor speed is adjusted accordingly. This dynamic adaptation eliminates unnecessary standby time in the first mode while maintaining optimized performance in the second mode when sensing is beneficial.
Solution Approach 2:
The controller changes the operational parameters of the polygon motor based on the selected mode. In the first mode, the motor operates at a fixed predetermined speed. In the second mode, the motor speed is variable and adjusted according to the sensed sheet type, allowing optimization of image formation efficiency while avoiding unnecessary sensing operations.
2Loss of time
If the polygon motor rotates at a predetermined speed without sheet sensing, then unnecessary standby time is eliminated, but the rotation speed cannot be optimized for different sheet types
Solution Approach 1:
The system provides dynamic control by allowing the user to select between two modes. The first mode uses a fixed predetermined rotation speed for quick operation without sensing. The second mode dynamically adjusts the rotation speed based on sensed sheet type, enabling optimization of image formation efficiency when needed while avoiding unnecessary delays.
Solution Approach 2:
The controller is designed to handle multiple operational scenarios through a single unified control system that supports both modes. It can operate with a fixed predetermined speed for general purposes and switch to adaptive speed control based on sheet type sensing when optimized performance is required, making the system versatile for different operational requirements.
3Manufacturing precision
If sheet type sensing is always performed, then the polygon motor rotation speed can be precisely optimized for each sheet type, but the device complexity and operation time increase
Solution Approach 1:
The control process is segmented into two distinct modes. The first mode uses a simple predetermined rotation speed without sheet sensing, suitable for operations where high precision is not critical. The second mode enables precise rotation speed optimization through sheet type sensing when manufacturing precision is required. This segmentation allows users to choose the appropriate level of complexity based on their specific needs.
Solution Approach 2:
Instead of always performing full sheet type sensing and adaptive speed control, the system allows partial action by selecting the first mode where a predetermined speed is used. This reduces the complexity and operation time when full precision is not necessary, while still providing the option for complete sensing and optimization in the second mode when high precision is required.
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 approach allows for more efficient control of the polygon motor, reducing unnecessary operations and extending the service life of consumables by optimizing the rotation speed based on sheet type sensing, thereby enhancing user convenience and reducing wastage.
Implementation Method 1
a light source configured to emit laser light
Implementation Method 2
a polygon mirror configured to reflect the laser light
Data Source
AI summary
An image formation apparatus includes: a light source configured to emit laser light; a polygon mirror configured to reflect the laser light; a photoreceptor configured to be exposed to the laser light reflected by the polygon mirror; a motor configured to rotate the polygon mirror; and a controller configured to sense a type of a sheet transported through the image formation apparatus. The image formation apparatus includes as operation modes a first mode in which no sheet type is sensed and a second mode in which a sheet type is sensed. The controller performs different processes for control regarding rotation of the motor in the first and second modes, respectively.