Barcode Printing Control Device Ink Bleed Compensation
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Solution Overview
Problem
Existing barcode printing technologies face challenges in maintaining readable barcode widths due to ink bleed, leading to decreased reading rates, as they struggle to balance printing density and ink bleed effects, resulting in either insufficient thickening of black bars or inadequate widths for proper barcode scanning.
Innovation Solution
A barcode printing control device that divides the printing area into multiple sections, adjusting the ink occupancy dimensions differently in each section to ensure proper barcode widths, regardless of ink bleed, by varying the number of ejection drops for each section, and setting dimensions based on the bleed degree to optimize readability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If printing density is increased to improve barcode reading rate, then reading rate improves, but ink bleed causes black bar thickening which decreases reading rate
Solution Approach 1:
The printing area is divided into multiple regions (first printing area and second printing area) along the sub-scanning direction. Different printing densities are applied to different regions, allowing the system to optimize for both ink bleed compensation and barcode readability without uniform density constraints across the entire barcode.
Solution Approach 2:
Different printing densities are assigned to different regions of the barcode. The first printing area uses a first printing density while the second printing area uses a second printing density, enabling local optimization where each region's printing characteristics are tailored to compensate for ink bleed while maintaining readable bar widths in that specific location.
2Manufacturing precision
If one dot is uniformly reduced to suppress ink bleed thickening, then thickening is suppressed, but reading rate decreases when ink bleed is large
Solution Approach 1:
Instead of uniform dot reduction across the entire barcode, the invention applies different printing densities to different regions. This allows certain regions to have reduced dot sizes to suppress thickening while other regions maintain higher dot sizes to ensure adequate bar width for reading, with each region's characteristics matched to its specific ink bleed conditions.
Solution Approach 2:
The printing density is made dynamic and variable across different regions of the barcode rather than static and uniform. The system adjusts printing density based on the specific requirements of each printing area, enabling adaptive compensation for ink bleed while maintaining readability where needed.
3Manufacturing precision
If printing density is uniformly decreased to prevent thickening, then thickening is suppressed, but black bar widths become insufficient for proper reading
Solution Approach 1:
The invention applies different printing densities to different regions rather than uniform density reduction. This allows certain regions to maintain higher printing densities that produce sufficient black bar widths for reading while other regions use lower densities to prevent thickening, with each region optimized for its specific requirements.
Solution Approach 2:
The barcode printing area is segmented into multiple printing areas with different density characteristics. This segmentation enables the system to prevent the need for uniform density reduction across the entire barcode, allowing specific regions to maintain higher densities for adequate bar width while other regions use lower densities to control thickening.
Data Source
AI summary
A printing device includes a barcode area dividing unit that divides a barcode area of a printing sheet into plural division areas along a Y direction, and a barcode area ejection amount conversion and output unit that controls an ink jet printing unit to print black bars such that an X direction is a direction in which the black bars and white bars are alternately arranged and occupancy dimensions of ink of pixels are different in the division areas divided by the barcode area dividing unit.