Sheet Processing Detection Control to Prevent Print Conveyance Jams
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Solution Overview
Problem
Existing sheet processing apparatuses connected to printing apparatuses face conflicts between sheet processing and conveyance, leading to user disturbance and potential jam errors when processing is performed directly on the sheet processing apparatus, and require inconvenient manual mode changes for non-image-associated processing.
Innovation Solution
A printing system with a detection unit to identify sheets for non-image-associated processing, triggering a control unit to restrict image printing and automate or prompt user intervention for sheet processing, ensuring seamless operation without complex user interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If sheet processing is performed on a sheet set directly on the sheet processing apparatus by a user, then sheet processing can be executed manually, but the user operation may be disturbed when a printed sheet is conveyed from the printing apparatus
Solution Approach 1:
The control unit detects the presence of a sheet on the sheet processing apparatus before allowing manual processing to occur. By performing this detection action in advance, the system can prevent user disturbance by restricting printing conveyance operations when a sheet is already present on the processing apparatus, thereby resolving the contradiction between enabling manual processing and preventing user disturbance.
2Ease of operation
If sheet processing is performed on a sheet set directly on the sheet processing apparatus by a user, then sheet processing can be executed manually, but the sheet set directly on the sheet processing apparatus by the user may collide with a sheet conveyed from the printing apparatus to cause a jam error
Solution Approach 1:
The control unit performs preliminary detection of a sheet's presence on the sheet processing apparatus before allowing printing conveyance operations to proceed. This advance detection enables the system to prevent collisions between manually placed sheets and conveyed sheets, thereby eliminating jam errors while preserving manual processing capability.
Solution Approach 2:
The control unit continuously monitors the sheet processing apparatus for the presence of sheets and uses this feedback information to control printing conveyance operations. When a sheet is detected on the processing apparatus, the system restricts conveyance operations to prevent collisions, creating a feedback loop that ensures reliable operation while maintaining ease of manual processing.
3Adaptability or versatility
If the change to the manual mode is executed at the press of a start switch by a user, then sheet processing can be performed not in association with printing, but the press of the start switch is required which is inconvenient for the user
Solution Approach 1:
The control unit automatically detects the presence of a sheet on the sheet processing apparatus and autonomously restricts printing conveyance operations without requiring any user action. The system serves itself by monitoring sheet presence and making appropriate control decisions, thereby eliminating the need for users to press start switches or perform manual mode changes, which significantly improves user convenience while maintaining full adaptability for manual processing.
Data Source
AI summary
A printing system includes a printing apparatus that prints an image on a sheet, a sheet processer that executes sheet processing, and a sheet detection sensor that detects a sheet on which the sheet processing is performed not in association with the printing of an image, where the printing of an image is restricted in response to detection of a sheet by the sheet detection sensor.