Image Forming Speed Control for Mixed Paper Stiffness
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Solution Overview
Problem
Image forming apparatuses struggle to balance productivity and image quality, particularly when handling papers with varying stiffness, as setting a low image forming speed for high-stiffness papers compromises productivity despite maintaining image quality.
Innovation Solution
The apparatus includes a controller that determines and adjusts image forming speeds based on sheet type and user input, allowing for operation in productivity or image-quality priority modes, with adjustable speeds stored in memory and displayed settings for user selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a low image forming speed is set for high-stiffness papers to maintain image quality, then image quality is improved, but productivity deteriorates
Solution Approach 1:
The system applies different image forming speeds based on the specific paper type (stiffness characteristics) rather than using a single speed for all papers. The controller identifies paper stiffness and selectively adjusts the image forming speed only when high-stiffness paper is detected, maintaining optimal speed for normal papers while reducing speed only for stiff papers to prevent image defects.
Solution Approach 2:
The image forming speed is made dynamically adjustable based on real-time paper property detection. The system can switch between different speed settings (first image forming speed for normal papers, second image forming speed for high-stiffness papers) depending on the detected paper characteristics, allowing flexible optimization of both productivity and image quality.
2Manufacturing precision
If an image forming speed corresponding to the highest stiffness paper is set, then image quality is maintained, but productivity is reduced due to lower speeds for other papers
Solution Approach 1:
The system applies different image forming speeds based on the specific paper type (stiffness characteristics) rather than using a single speed for all papers. The controller identifies paper stiffness and selectively adjusts the image forming speed only when high-stiffness paper is detected, maintaining optimal speed for normal papers while reducing speed only for stiff papers to prevent image defects.
Solution Approach 2:
The system changes the image forming speed parameter based on detected paper stiffness. By measuring stiffness and comparing it against threshold values, the controller adjusts the speed parameter dynamically - using a first (higher) speed for papers below the threshold and a second (lower) speed for papers exceeding the threshold, thereby optimizing productivity while maintaining image quality.
Data Source
AI summary
An information processing apparatus controls an image forming apparatus to form an image, with an image forming speed of the image forming apparatus being controlled. The information processing apparatus includes an interface to acquire sheet information related to a sheet on which the image is to be formed by the image forming apparatus, and a controller to receive user instruction information for adjusting an image forming speed for a certain mode included in a plurality of modes and to control the image forming speed for the certain mode based on the user instruction information and the sheet information.