Recording Apparatus Sheet Feeding Correction for Vertical Installation
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Solution Overview
Problem
Existing recording apparatuses face challenges in accurately feeding sheets during image recording due to differences in roller feeding amounts caused by gravitational forces, leading to inconsistent printing quality when switching between vertical and horizontal installations.
Innovation Solution
A recording apparatus with a medium transporting unit, image recording unit, installation position detecting unit, and transportation amount correcting unit that adjusts the transportation amount based on detected installation position, using correction data to maintain consistent sheet feeding and printing quality across both vertical and horizontal installations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If vertical installation is selected, then the apparatus can be installed in a compact space, but the sheet feeding amount decreases due to gravitational force causing slip between the sheet and roller
Solution Approach 1:
The system dynamically adjusts the target feeding amount based on the detected installation position (vertical or horizontal). When vertical installation is detected, the control unit increases the target feeding amount to compensate for the slip caused by gravitational force acting on the sheet during upward transport, thereby maintaining feeding accuracy across different installation orientations
Solution Approach 2:
The invention changes the feeding amount parameter according to the installation position. By detecting whether the apparatus is installed vertically or horizontally, the control unit modifies the target feeding amount parameter to compensate for gravitational effects, ensuring consistent sheet transport accuracy regardless of installation orientation
2Manufacturing precision
If horizontal installation is selected, then the sheet feeding amount is accurate, but the apparatus occupies more installation space
Solution Approach 1:
The system dynamically adjusts the target feeding amount based on the detected installation position. When horizontal installation is detected, the control unit uses the standard feeding amount without additional compensation, optimizing the balance between space utilization and feeding accuracy for horizontal configurations
3Manufacturing precision
If the target feeding amount is increased for vertical installation, then sheet feeding accuracy is maintained, but the transportation mechanism must handle variable feeding requirements
Solution Approach 1:
The control unit receives feedback from the installation position detection unit and automatically adjusts the target feeding amount accordingly. This closed-loop feedback mechanism ensures the transportation system adapts to different installation positions without requiring manual intervention, maintaining both accuracy and operational simplicity
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
Ensures accurate sheet transportation and consistent printing quality regardless of the apparatus's installation position, maintaining satisfactory printing results by correcting for differences in transportation amounts and gravitational influences.
Implementation Method 1
a problem may arise in that a difference in a feeding amount of the roller may occur since the direction of gravitational force acting on the sheet is different depending on the position of the recording apparatus
Data Source
AI summary
A recording apparatus includes a transport roller that transports a sheet by a predetermined transportation amount along a transportation path, a printing unit that records an image on the sheet being transported in synchronization with driving of the transport roller, a position detecting mechanism that detects whether an installation position is vertical installation or horizontal installation, and a transportation amount correcting unit that corrects a transportation amount depending on the detection result of the position detecting mechanism.