Post-Processing Apparatus Paper Orientation Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing image forming systems face challenges in ensuring that all paper outputs have their front and back sides consistently oriented in the same direction, especially when multiple post-processing stages are involved, leading to productivity reduction and user inconvenience.
Innovation Solution
A post-processing apparatus and image forming system that includes a first post-processor with a paper turn-over unit and a paper surface processing unit, along with a controller that determines the use of the turn-over unit based on the combination of post-processing modes, ensuring consistent orientation of paper sides across various processing stages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a paper turn-over unit is used in a preceding post-processor, then the front and back sides of the paper are reversed, but the front and back sides of the output paper become reversed depending on whether the preceding post-processor is used or not
Solution Approach 1:
The system dynamically adjusts the operation of the paper turn-over unit based on the combination of post-processing modes. The controller determines whether to use the turn-over unit by evaluating the specific post-processing modes selected, making the system adaptive rather than fixed. This resolves the contradiction by allowing the system to maintain consistent paper orientation only when necessary, rather than always or never
Solution Approach 2:
The controller determines in advance whether the paper turn-over unit should be used based on the selected post-processing modes before the actual post-processing begins. This preliminary determination allows the system to prepare the correct paper orientation proactively, preventing the reversal problem from occurring in the first place rather than correcting it afterward
2Ease of operation
If paper is turned over by a paper turn-over unit, then the front and back sides are reversed, but productivity is reduced and user labor increases
Solution Approach 1:
The system applies the paper turn-over operation partially - only when the combination of post-processing modes requires it. The controller evaluates whether turning over the paper is necessary based on the specific modes selected, avoiding unnecessary turn-over operations that would reduce productivity. This selective application resolves the contradiction by performing the action only when beneficial
3Ease of operation
If the paper turn-over unit is always used, then consistent orientation is achieved, but the system cannot handle cases where turn-over is unnecessary
Solution Approach 1:
The system transitions from a static, always-on paper turn-over unit to a dynamic system where the controller determines operation based on the specific post-processing modes. This adaptability allows the system to handle diverse post-processing combinations flexibly, using the turn-over unit only when the mode combination requires consistent orientation, thereby resolving the contradiction between consistency and flexibility
Data Source
AI summary
The present invention includes a first post-processor equipped with a paper turn-over unit for paper and a paper surface processing unit adapted to process a paper surface of the paper; a second post-processor configured to be different from the first post-processor and located downstream of the first post-processor in a paper transport direction; and a controller adapted to control the first post-processor and the second post-processor, wherein the controller determines whether to use the paper turn-over unit, according to a combination of a post-processing mode which uses the first post-processor and a post-processing mode which uses the second post-processor.