Image Forming Apparatus Silent Mode Noise Reduction
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Solution Overview
Problem
Existing image forming apparatuses face challenges in reducing noise during silent mode operation due to limitations in reducing sheet conveyance speed, which can lead to multifeed issues and insufficient noise reduction.
Innovation Solution
The image forming system adjusts the printing distance between recording media in low-speed conveyance mode to be greater than in high-speed conveyance mode, and synchronizes the conveyance speeds between the image forming apparatus and the sheet feeder to optimize noise reduction while preventing multifeed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the sheet conveyance speed is reduced in silent mode, then noise is reduced, but multifeed issues occur and noise reduction is insufficient
Solution Approach 1:
The patent changes the printing distance parameter between recording media based on the conveyance speed mode. In low-speed conveyance mode, the controller increases the printing distance compared to high-speed mode, which prevents multifeed issues while maintaining the low-speed operation needed for noise reduction in silent mode
2Reliability
If the printing distance is increased in low-speed conveyance, then multifeed is prevented, but productivity may be reduced
Solution Approach 1:
The patent dynamically adjusts the printing distance based on the conveyance speed mode. The controller switches between different printing distance settings depending on whether high-speed or low-speed conveyance is used, optimizing both reliability and productivity for each operating condition rather than using a fixed printing distance
Data Source
AI summary
An image forming system includes an image forming apparatus that includes an image forming part to form an image on a recording medium, a sheet container to contain the recording medium, a sheet feeder to feed the recording medium from the sheet container toward the image forming part, and a controller to switch speeds of conveyance of the recording medium conveyed by the image forming part and the sheet feeder between high speed sheet conveyance and low speed sheet conveyance. The image forming apparatus continuously forms the image on multiple recording media in a continuous printing mode. The controller adjusts a printing distance in the continuous printing mode between a trailing end of a preceding recording medium of the recording media and a leading end of a subsequent recording medium in the low speed sheet conveyance to be greater than the printing distance in the high speed sheet conveyance.