Sheet Processing Apparatus Shared Roller for Jam Removal
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Solution Overview
Problem
Conventional sheet processing apparatuses face difficulties in easily removing sheets that have stopped due to causes like paper jams or sensor abnormalities, as users struggle to determine the correct rotation direction for conveying rollers.
Innovation Solution
A sheet processing apparatus with a first conveying roller pair, a second conveying roller pair capable of forward and reverse rotation, and a shared common roller for folding, which allows for easy sheet removal by rotating a dedicated rotation unit to guide the sheet to the folding rollers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple conveying rollers with different rotation directions are used in the folding process apparatus, then the sheet can be conveyed through the folding process, but it becomes difficult for users to grasp which rotation knob needs to be rotated in which direction, making sheet removal difficult
Solution Approach 1:
The patent combines multiple conveying rollers (first conveying roller pair and second conveying roller pair) into a single integrated conveying system. By merging these rollers and providing a single rotation knob that controls the entire conveying path, the patent eliminates the need for users to determine which of multiple separate rollers to operate, thereby simplifying sheet removal while maintaining the multi-roller conveying function.
Solution Approach 2:
The single rotation knob serves multiple functions: it controls both the first conveying roller pair and the second conveying roller pair, and can operate in both forward and reverse directions. This universal control mechanism replaces the need for separate rotation knobs for each roller, making the system easier to operate while maintaining its complex conveying capabilities.
2Ease of operation
If a rotation knob is provided on each conveying roller to enable manual rotation for sheet removal, then sheet removal becomes possible, but the complexity of determining the correct rotation direction for each roller increases
Solution Approach 1:
Instead of providing separate rotation knobs for each conveying roller, the patent merges the control function into a single rotation knob. This single knob controls the rotation direction of multiple rollers simultaneously, eliminating the information loss that occurs when users must determine which of multiple knobs to rotate and in what direction.
Solution Approach 2:
The single rotation knob acts as an intermediary control element that mediates between the user and multiple conveying rollers. Rather than requiring direct interaction with each roller's rotation mechanism, the user interacts with this single intermediary knob, which then translates the user's input into appropriate rotation directions for all relevant rollers.
Data Source
AI summary
A sheet processing apparatus includes: a second conveying roller pair that receives and conveys a sheet conveyed by a first conveying roller pair; a first folding roller pair that forms a first fold on the sheet; and a first rotation unit capable of rotating the second conveying roller pair and the first folding roller pair. One roller of the second conveying roller pair and one roller of the first folding roller pair are a common roller shared therebetween. The second conveying roller pair causes the sheet to be deflected and guided to the first folding roller pair, and the first folding roller pair forms the first fold on the deflected sheet by rotating the first rotation unit in a certain direction in a state in which the sheet is held by the first conveying roller pair and the second conveying roller pair.