Image Forming Device Overprinting Warning Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional image forming devices struggle to appropriately display warnings during overprinting on continuous paper, leading to potential deviations in cutting/processing treatments due to inconsistent image periods and surplus margins.
Innovation Solution
An image forming device that includes a conveyor, an image former, and a hardware processor to estimate the print job length based on the interval between pre-set mark images, displaying a warning when the length is expected to exceed a predetermined threshold, thereby accounting for surplus margins and maintaining consistent image periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the print job is interrupted to form a cleaning band on continuous paper, then the cleaning blade turn-up is prevented, but the image period becomes non-constant causing deviation in cutting/processing positions
Solution Approach 1:
The system performs preliminary calculation of the print job length based on print information before actually executing the print job. This allows the warning to be displayed in advance, enabling users to take preliminary actions (such as adjusting post-processing machine settings) before the actual printing occurs, thus preventing position deviations in subsequent cutting/processing treatments.
Solution Approach 2:
The system provides feedback by displaying a warning when the calculated print job length exceeds the continuous operation threshold. This feedback mechanism informs users about the potential issue with image period non-constant, allowing them to adjust settings or interrupt the print job before it causes manufacturing precision problems in post-processing.
2Device complexity
If the conventional method calculates print job length based on sum of actual images, then the calculation is simple, but it does not account for surplus margins in overprinting causing inaccurate threshold evaluation
Solution Approach 1:
The system performs preliminary calculation of the print job length based on print information (such as mark image intervals) before actually executing the print job. This preliminary estimation accounts for surplus margins in overprinting scenarios, providing more accurate threshold evaluation without requiring complex real-time measurements during printing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables appropriate warning displays during overprinting, allowing users to adjust settings or correct post-processing machine configurations, preventing deviations in cutting/processing treatments and ensuring consistent image periods.
Implementation Method 1
fixes the toner image to the recording medium by heating and pressurizing the recording medium
Implementation Method 2
the cleaning blade is brought into pressure contact with a surface of the image carrier, thereby removing residuals such as toner adhered to a surface of the image carrier
Data Source
AI summary
An image forming device includes: a conveyer that conveys a recording medium; an image former that forms an image on an image carrier and prints the image on the recording medium conveyed by the conveyer; and a hardware processor that controls to stop a print job when a length of the print job reaches a predetermined threshold and form a cleaning pattern image on the image carrier, and at the time of overprinting to further print in an overlapping manner on continuous paper on which a mark image indicating an image formation position is printed, obtains the length of the print job on the basis of an interval between mark images set in advance before starting printing the print job and displays a warning when the length of the print job is estimated to exceed the predetermined threshold.