Foil Stamping Image Quality Adjustment Control
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Solution Overview
Problem
Existing image forming apparatuses for foil stamping unnecessarily perform image quality adjustments like gradation correction and density unevenness correction, leading to increased output time and consumable supply deterioration, as these adjustments are not required for foil stamping and previous technologies do not account for toner usage variations.
Innovation Solution
An image forming apparatus with a control unit that enables the selection and reduction of image quality adjustments specific to foil stamping, such as gradation correction, density unevenness correction, and maximum density correction, with independent thresholds for these adjustments, allowing for efficient printing by minimizing unnecessary corrections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If image quality adjustment operations (gradation correction, density unevenness correction, maximum density correction) are performed during foil stamping image formation, then image quality is improved, but output time increases and toner consumption increases
Solution Approach 1:
The patent changes the parameter of image quality adjustment frequency and type based on the printing mode. For foil stamping mode, the control unit suppresses or eliminates certain image quality adjustments (gradation correction, density unevenness correction) that are unnecessary for foil stamping, while maintaining only essential adjustments. This parameter change resolves the contradiction by adapting the adjustment operations to the specific requirements of foil stamping, thereby reducing output time without compromising the required image quality for foil transfer.
2Manufacturing precision
If image quality adjustment operations are performed during foil stamping image formation, then image quality is improved, but consumable supply (toner) deterioration accelerates
Solution Approach 1:
The control unit modifies the image quality adjustment parameters specifically for foil stamping mode, reducing the frequency and type of corrections performed. By suppressing unnecessary adjustments like gradation and density unevenness corrections that consume toner, the patent reduces toner consumption while maintaining sufficient image quality for foil stamping purposes, where absolute image precision is less critical than for normal printing.
3Manufacturing precision
If comprehensive image quality adjustments are performed for all printing modes, then image quality is maintained across all modes, but device complexity increases
Solution Approach 1:
The patent implements a dynamic control system that automatically adjusts the image quality adjustment operations based on the detected printing mode. The control unit dynamically switches between different adjustment strategies: comprehensive adjustments for normal printing mode and suppressed adjustments for foil stamping mode. This dynamic adaptation resolves the contradiction by making the system flexible and mode-dependent, avoiding the need for permanently complex control logic while maintaining appropriate image quality for each mode.
Data Source
AI summary
An image forming apparatus includes an image forming unit that forms an image based on image data; and a control unit that controls the image forming unit, the control unit is capable of controlling an image quality adjustment operation in the image forming unit, and in formation of an image on which foil stamping is performed, selection of no performance of an image quality adjustment or/and selection of performance of an image quality adjustment for foil stamping is enabled.