Printer Suction Fan Stabilizes Paper Delivery
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Solution Overview
Problem
Conventional paper delivery systems face misalignment and instability issues with paper sheets due to air resistance, especially for sheets with small basis weight, leading to potential collisions and erroneous detection of stacked volumes during high-speed printing.
Innovation Solution
Incorporating a suction fan and a first suction port within the printer's housing to actively suck air below the paper sheets, combined with adjustable suction ratio and direction control, to stabilize paper delivery and prevent collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air is not actively removed below delivered paper sheets, then the printer structure remains simple, but paper sheets experience misalignment and instability due to air resistance during high-speed printing
Solution Approach 1:
The suction mechanism is integrated into the printer housing itself, merging the air removal function with the existing structural components. The housing serves dual purposes as both the enclosure and the suction mechanism body, eliminating the need for separate external suction devices and reducing overall system complexity while maintaining paper delivery stability
Solution Approach 2:
The suction mechanism is designed to perform multiple functions: it removes air below delivered paper sheets to prevent misalignment, and simultaneously draws air from the printer interior to discharge outside, providing both paper delivery stabilization and internal air circulation functions through a single integrated system
2Productivity
If high-speed printing is performed without active air removal, then printing productivity is high, but paper sheets collide and stacked volume detection becomes erroneous
Solution Approach 1:
The suction mechanism operates continuously before and during the paper delivery process to proactively remove air from below the paper sheets. This preliminary air removal prevents the buildup of air pressure that would otherwise cause misalignment and collision during high-speed printing, ensuring precision is maintained even at high productivity levels
Solution Approach 2:
The invention uses a suction fan to create negative pressure (suction) that actively draws air from below the paper sheets through the housing. This pneumatic approach replaces passive air management with active controlled airflow, enabling stable paper delivery at high printing speeds by continuously removing air that would otherwise cause instability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration stabilizes paper delivery, prevents collisions, and simplifies the printer's structure by integrating the suction mechanism within the housing, ensuring accurate detection of stacked volumes even during high-speed printing.
Implementation Method 1
a suction fan that sucks a gas that cools down the inside of the housing from an outside of the housing
Implementation Method 2
a first suction port that is a suction port through which a gas is sucked from the outside of the housing by the suction fan and through which a gas below a paper sheet that is delivered from the inside of the housing is sucked
Data Source
AI summary
A printer includes: a housing; a paper delivery table on which paper sheets delivered from an inside of the housing are stacked; a suction fan that sucks a gas that cools down the inside of the housing from an outside of the housing; and a first suction port that is a suction port through which a gas is sucked from the outside of the housing by the suction fan and through which a gas below a paper sheet that is delivered from the inside of the housing is sucked.