Security Printing Position Determination for Cut Sheets
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Solution Overview
Problem
Security printing on sheets that are cut post-processing is compromised, as existing methods do not allow for the application of security features like user names, print times, and matrix type two-dimensional codes on cut sheets, thereby reducing security and increasing printing costs.
Innovation Solution
An image forming apparatus equipped with a sheet size detector, dividing number acquirer, sheet divider, security printing setting acquirer, and security printing position determiner, which allows for the detection of sheet size, division into areas, and precise placement of security prints on each area, ensuring security printing is maintained even after cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If post-processing cutting is applied to sheets after printing, then sheet usage efficiency is improved and printing cost is reduced, but security printing cannot be conducted on cut sheets and security effect is lost
Solution Approach 1:
The patent applies preliminary action by determining security printing positions before the cutting process occurs. The system calculates where security prints should be placed on each divided area in advance, ensuring that even after the sheet is cut, each cut portion contains the appropriate security printing. This pre-planning allows both cost efficiency through cutting and security maintenance to be achieved simultaneously.
2Reliability
If security printing is conducted on the entire sheet before cutting, then security effect is maintained, but printing cost increases and sheet usage efficiency decreases
Solution Approach 1:
The patent applies local quality by placing security prints only in specific local areas that will remain on cut sheets, rather than printing security information on the entire sheet. The system identifies and targets only the necessary regions for security printing based on the cutting positions, thereby maintaining security effectiveness while reducing ink consumption and printing costs.
3Productivity
If sheet is divided into multiple areas, then sheet usage efficiency is improved, but determining correct security printing position on each area becomes complex
Solution Approach 1:
The patent applies segmentation by systematically dividing the sheet into multiple areas and independently determining security printing positions for each area. The system processes each divided area separately, calculating the appropriate security print position within each segment based on its specific characteristics and the cutting scheme, thereby managing the complexity through structured division rather than treating the entire sheet as a single unit.
Data Source
AI summary
An image forming apparatus having security printing function, connectable to a post-processing apparatus capable of cutting a sheet, includes a sheet size detector to detect a size of a sheet to be conducted with print processing, a dividing number acquiring unit to acquire a dividing number of the sheet, a sheet divider to divide the sheet into a plurality of areas based on the sheet size detected by the sheet size detector and the dividing number acquired by the dividing number acquiring unit, a security printing setting acquiring unit to acquire setting of a position of security printing, and a security printing position determination unit to determine a print position of security printing on each of the plurality of areas, divided by the sheet divider, based on the position of security printing acquired by the security printing setting acquiring unit.