Image Forming Apparatus Batch Sheet Parameter Acquisition
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Solution Overview
Problem
Existing image forming systems require repetitive operations to acquire print adjustment parameters for various sheet types, which complicates the process and reduces operability.
Innovation Solution
An image forming apparatus that outputs and reads sheets with predetermined patterns to acquire parameters for different sheet types, allowing for simultaneous processing and storage of print position misalignment amounts, thereby simplifying the operation and improving user-friendliness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sheet with adjustment marks is set on the ADF to read images and acquire adjustment values for each sheet type, then parameters for print position adjustment can be acquired, but the operation must be repeated for each sheet type which reduces operability
Solution Approach 1:
The patent merges multiple separate reading operations into a single batch processing operation. Multiple sheets of different types are stacked together on the ADF and read in one go, combining what were previously separate operations into a unified process that maintains measurement precision while dramatically improving ease of operation
Solution Approach 2:
The reading apparatus is made universal by enabling it to handle multiple sheet types simultaneously in a single operation. The system can process diverse sheet types (different sizes, formats) through one unified reading process, making the apparatus multi-functional rather than requiring type-specific operations
2Measurement precision
If adjustment marks are printed on sheets and read by the ADF for each sheet type, then print position parameters can be acquired, but the repetitive setting operation reduces productivity
Solution Approach 1:
Multiple parameter acquisition operations are merged into a single batch processing operation. The system reads multiple sheets of different types simultaneously, acquiring all necessary parameters in one go rather than sequentially, thereby maintaining accuracy while exponentially improving productivity
Solution Approach 2:
The system performs preliminary stacking of multiple sheets before the reading operation. By preparing the stack in advance and processing them together, the system eliminates repetitive setup operations and maximizes productivity while preserving measurement precision through the unified reading process
Data Source
AI summary
An image forming apparatus includes an image forming device that forms an image on a sheet and an image reading device that conveys a document placed on a stacking portion and reads an image on the document. The image forming device outputs first and second output materials in succession. First output material constitutes a first type of sheet having a predetermined pattern image, and the second output material constitutes a second type of sheet having the predetermined pattern image. The image reading device conveys the first and second output materials in succession from the stacking portion and reads a first image and a second image. A first parameter to cause image formation using the sheet of the first type is acquired based on the first image and a second parameter to cause image formation using the sheet of the second type is acquired based on the second image.