Sheet Skew Correction Mechanism With Dual Orientation Adjustment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing image forming apparatuses face challenges in accurately correcting the tilt of sheets to ensure high-quality image formation, particularly due to variations in sheet characteristics.
Innovation Solution
A sheet conveying device with a tilt correction mechanism comprising a first and second orientation adjustment mechanism, where the first mechanism adjusts the angle of a contact surface using a drive signal, and the second mechanism allows manual adjustment of a support member, enabling precise and robust tilt correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single automatic orientation adjustment mechanism is used, then the device complexity is reduced, but the adaptability to various sheet characteristics deteriorates
Solution Approach 1:
The orientation adjustment function is divided into two independent mechanisms: a first orientation adjustment mechanism for automatic adjustment and a second orientation adjustment mechanism for manual adjustment. This segmentation allows each mechanism to specialize in different adjustment scenarios, thereby resolving the contradiction between device simplicity and adaptability to various sheet characteristics.
Solution Approach 2:
The tilt correction device incorporates both automatic and manual adjustment capabilities, making it universally applicable to different sheet types and characteristics. The dual-mechanism design enables the system to handle both routine automatic adjustments and special cases requiring manual intervention, achieving multi-functionality without significantly increasing overall complexity.
2Device complexity
If the contact surface angle is fixed, then the device complexity is reduced, but the manufacturing precision of sheet alignment deteriorates
Solution Approach 1:
The contact surface angle is transformed from a fixed parameter to a dynamic one through the introduction of the first orientation adjustment mechanism. This mechanism enables real-time modification of the contact surface angle based on detected sheet tilt, thereby achieving high sheet alignment precision while maintaining relatively simple device complexity through automated control.
Solution Approach 2:
The system employs a feedback loop where the image reading device detects sheet tilt, the image processing portion calculates the tilt angle, and the adjustment processing portion sends drive signals to the first orientation adjustment mechanism to correct the tilt. This feedback mechanism ensures precise sheet alignment without requiring complex manual adjustment procedures.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A first conveying mechanism (32) conveys a sheet. A correction member (71) is provided more on an upstream side of a conveying direction of the sheet than the first conveying mechanism (32), and includes a contact surface (71a) that comes into contact with a side end of the sheet at one end of a conveying path of the sheet in a width direction. A first orientation adjustment mechanism (72) is operated by being input with a drive signal and changes an angle of the contact surface (71a). A second conveying mechanism (74) is provided more on the upstream side of the conveying direction than the correction member (71), and conveys the sheet toward the contact surface (71a) along a direction that is oblique with respect to the conveying direction. A support member (73) supports the correction member (71) and the first orientation adjustment mechanism (72). A second orientation adjustment mechanism (74) is capable of changing an orientation of the support member (73) by being operated manually.