Printing Control Unit Spooling for Independent Conveyance Troubles
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Solution Overview
Problem
Conventional printing systems face challenges in managing printing status and preventing redundant printing when sheet conveyance control is independent of printing data management, particularly in cases where a trouble occurs that can assure a successful printing result.
Innovation Solution
A printing device and method that includes data transfer control units for storing and reading image data, an output control unit for transferring data to printing units, and a printing control unit that instructs data transfer based on storage reports, allowing the conveyance of recording media to continue until all spooling pages are printed in case of specific troubles, without the need for immediate cancellation instructions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the printing control unit manages printing status until toner attaches onto the paper sheet to enable cancel operation, then redundant printing can be prevented, but the system cannot be applied when sheet conveyance control is independent of printing data management
Solution Approach 1:
The invention introduces a storage unit that stores image data for multiple pages and a printing control unit that acts as an intermediary between the data transfer control unit and the printer engine. This intermediary manages the printing status and coordinates with the independent sheet conveyance control system, enabling cancel operations without requiring the printing control unit to directly manage toner attachment status. The storage unit serves as a buffer that decouples the data management from the conveyance control.
Solution Approach 2:
The system segments the printing control functions into distinct components: the data transfer control unit handles data reception and storage, the printing control unit manages printing status and cancel operations, and the sheet conveyance control unit independently manages paper delivery. This segmentation allows each component to operate autonomously while maintaining coordination through standardized interfaces.
2Loss of substance
If the printing operation is stopped immediately when trouble occurs to prevent redundant printing, then wasted toner is reduced, but the printing recovery time increases
Solution Approach 1:
The printing control unit continuously monitors the printing status and receives feedback from the printer engine about toner attachment completion. When a trouble occurs, the control unit uses this feedback to determine whether to issue a cancel operation. The system provides feedback to the upper level device about the printing status, enabling coordinated decision-making about whether to continue or cancel printing based on the current state.
Solution Approach 2:
The system dynamically adjusts the printing operation based on real-time conditions. When a trouble occurs, the printing control unit evaluates the current printing status and dynamically decides whether to continue or cancel the operation. The sheet conveyance control unit also dynamically adjusts paper delivery based on the printing status, ensuring that pages are not wasted while minimizing recovery time.
3Productivity
If the cancel operation is triggered by cancel instruction from printing control unit, then printing can be stopped, but the system requires printing control unit to manage printing status which limits applicability
Solution Approach 1:
The sheet conveyance control unit independently manages paper delivery and detects troubles without requiring the printing control unit to micromanage each aspect. The printing control unit focuses on high-level printing status management and coordinate with the independent conveyance control unit, reducing its management burden while maintaining efficient printing operations.
Data Source
AI summary
A printing device includes data transfer control units that store an image data transferred from un upper level device into a storage unit and reads out the image data from the storage unit in response to an instruction to start a printing, printing units that print the data onto a recording medium, an output control unit that outputs each image data to a predetermined printing unit, and a printing control unit that instructs the data transfer units to transfer the stored image data corresponding to one page to the output control unit, when a storage report of the image data corresponding to one page is sent from any of the data transfer control units, and stops a conveyance of the recording medium after any of the printing units completes the printing onto the recording medium under the printing in a case that a predetermined specific trouble occurs.