Printer Stacker Output Path Switching for Continuous Printing
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Solution Overview
Problem
Conventional printing systems for the print on demand (POD) market face challenges in maintaining continuous printing operations when an instruction is given to remove a print product from a stacker, leading to suspension of printing processes.
Innovation Solution
A printing system with a stacking control unit, a sheet removal unit that can be opened and closed, and an output control unit that allows for seamless transition of printed sheets to a different output destination when a removal instruction is input, ensuring continuous printing without interruption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a user inputs an instruction to remove a print product from the stacker, then the print product can be removed from the stacker, but the printing operation is suspended
Solution Approach 1:
The patent divides the sheet discharge path into multiple segments: a first discharge path leading to the stacker and a second discharge path leading to an output destination. When a removal instruction is received, the system switches the discharge path segmentation dynamically, redirecting sheets to the second path while maintaining continuous printing operation.
Solution Approach 2:
The patent implements dynamic control of the sheet discharge destination by switching between different discharge paths based on user instructions. The discharge path configuration changes from a static single-path system to a dynamic multi-path system that can adapt to removal instructions while maintaining printing continuity.
2Ease of operation
If the printing operation is suspended to allow print product removal, then the print product can be accessed, but productivity decreases
Solution Approach 1:
The patent segments the printing operations into two independent streams: sheets being printed and sheets being removed. By separating the discharge paths, the system allows simultaneous printing and removal operations without interference, eliminating the need to suspend printing for product access.
Solution Approach 2:
The patent introduces an intermediary discharge path mechanism that mediates between the printing operation and the removal operation. The discharge path acts as an intermediary channel that allows sheets to be directed to different destinations simultaneously, enabling both printing continuity and product removal without suspension.
3Productivity
If the sheet discharge destination is changed during printing, then continuous printing can be maintained, but the discharged sheets may be misplaced
Solution Approach 1:
The patent segments the discharge destinations into distinct paths: the stacker for normal operation and the output destination for removed sheets. This segmentation ensures that sheets are reliably directed to the correct destination based on the current operation mode, preventing misplacement while maintaining continuity.
Solution Approach 2:
The patent implements feedback control by monitoring user instructions and dynamically adjusting the discharge path configuration. When a removal instruction is received, the system feedback-adjusts the discharge destination to the output path, ensuring accurate sheet placement while maintaining printing continuity.
Data Source
AI summary
A method for controlling a printing system includes stacking a sheet printed by executing a job on a stacking unit provided inside a stacker, the stacker including a door that can be opened and closed, opening the door in a case where a predetermined instruction is input by a user, and in a case where the predetermined instruction is input while a job for stacking the sheet on the stacking unit, control to output the sheet discharged by executing the currently executed job on an output destination different from the stacking unit.