Image Forming Apparatus Test Chart Calibration Sensor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing image forming apparatuses face inefficiencies due to user errors during the process of setting and reading test charts, leading to wasteful rework and reading errors, particularly when incorrect originals are set or not correctly positioned, which hampers the calibration and adjustment processes.
Innovation Solution
An image forming apparatus equipped with a reader and sensor system that detects sheet sizes and orientations, allowing only correct test charts to be read, thereby preventing errors by ensuring the test chart is properly set before initiating the reading process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual operation is required for setting the test chart on the reading device, then the user can set the test chart, but work errors occur because the user may set an incorrect original or not correctly position the test chart
Solution Approach 1:
The system automatically detects whether the test chart is correctly set on the reading device by having the reading device read the test chart and the controller determine correctness based on reading results, eliminating the need for manual verification and preventing user errors
Solution Approach 2:
The controller receives reading results from the reading device and uses this feedback to determine whether the test chart is correctly set, then provides appropriate notifications to guide the user to correct any errors
2Productivity
If the reading device reads the test chart without verifying correct positioning, then the reading process is simple, but reading errors occur due to work errors
Solution Approach 1:
The controller performs preliminary verification by analyzing reading results to determine whether the test chart is correctly set before proceeding with calibration, preventing reading errors from occurring
Solution Approach 2:
The system uses feedback from the reading device to verify correct test chart positioning, ensuring reading accuracy while maintaining efficient processing through automated determination
3Productivity
If the system allows reading without verification, then the calibration process continues quickly, but wasteful rework occurs when reading errors are detected later
Solution Approach 1:
The controller performs preliminary determination of correct test chart setting before calibration proceeds, preventing wasteful rework by catching errors early in the process
Solution Approach 2:
The system continuously monitors reading results and provides feedback to determine whether calibration should proceed, preventing time loss from rework by identifying errors before they impact the calibration process
Data Source
AI summary
An image forming apparatus includes a sensor configured to detect a length of a sheet, which is placed on a platen, in a predetermined direction and a controller. The controller is configured to convert an image signal based on a conversion condition, control the image forming unit to form an image based on the converted image signal, and execute calibration in which the conversion condition is generated. The controller is configured, in a case in which the calibration is to be executed, to acquire information related to a size of a sheet on which a test chart is to be formed, select a sheet based on the information, form the test chart on the selected sheet acquire reading data output from the reader, and generate the conversion condition based on the reading data.