Image Forming Apparatus Bypass Feed Path Inspection
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Solution Overview
Problem
Existing image forming apparatuses face challenges in maintaining the quality of printed materials when inspecting images formed outside the apparatus, as the inspection process often results in the image getting dirty due to passing through the image forming path.
Innovation Solution
An image forming apparatus with a feed path that bypasses the image former, allowing for inspection without compromising the quality of the printed material, and incorporating a controller to manage inspection modes and conveying speeds to prevent damage during the inspection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the printed material is conveyed through the image forming path for inspection, then the inspection can be performed, but the image quality deteriorates due to dirt accumulation
Solution Approach 1:
The patent divides the inspection system into two separate paths: a feed path for conveying printed materials and an image forming path for actual image formation. This segmentation allows inspection to occur without the printed material passing through the image forming path, thereby preventing dirt accumulation while maintaining inspection capability
Solution Approach 2:
The patent introduces a separate feed path as an intermediary route that connects the printed material supply to the inspection unit without involving the image forming path. This intermediary path enables the inspection function while isolating the printed material from potential contamination sources in the image forming path
2Productivity
If the conveying speed is increased for efficient inspection, then productivity improves, but the risk of damage to printed materials increases
Solution Approach 1:
The patent implements a variable conveying speed mechanism that dynamically adjusts the speed based on the inspection phase and material type. The conveying speed can be increased during safe phases and reduced when materials are more vulnerable, thereby maintaining high overall productivity while preventing damage at critical moments
Data Source
AI summary
An image forming apparatus, includes: an image former that forms an image on a sheet; an inspector that inspects an object; and a feed path that conveys the object to the inspector, wherein the feed path is installed to bypass the image former.