Exposure Head Data Conversion Reset for Noise-Stable Printing
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Solution Overview
Problem
Existing electrophotographic printers face challenges with high-speed data transmission due to disturbances from external noise during serial communication, which can lead to malfunctions in the serial/parallel conversion units.
Innovation Solution
The implementation of a reset unit to reset the conversion unit to an initial state after power is supplied and an enable signal is output, followed by a controlled timing of initial training to minimize noise interference, ensuring stable data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high-speed serial communication is implemented for image data transmission, then data transmission speed is improved, but the system becomes susceptible to external noise interference
Solution Approach 1:
The patent applies preliminary action by performing a reset operation on the serial/parallel conversion unit before initiating serial communication. This preliminary reset ensures the conversion unit is in a known initial state, preventing noise-induced malfunctions during subsequent high-speed data transmission. The reset is executed as a preparatory step before the enable signal is asserted, establishing a clean baseline for communication.
2Stability of the object's composition
If the conversion unit is reset immediately after power supply, then initial state stability is improved, but communication timing may be disrupted due to noise
Solution Approach 1:
The reset operation is performed as a preliminary action between power supply and the start of serial communication. This timing ensures the conversion unit is stabilized in its initial state before noise-prone communication begins, while the power supply sequence ensures the unit is fully powered before reset is applied.
Solution Approach 2:
The patent implements a periodic sequence of operations: power supply → enable signal assertion → reset operation → communication start. This structured periodic sequence ensures proper initialization timing, allowing the conversion unit to be reset at the optimal moment when power is stable but before noise-prone communication begins.
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
This approach reduces the likelihood of normal data communication being disrupted, maintaining stable image formation even in noisy environments, thereby preventing malfunctions and ensuring accurate image output.
Implementation Method 1
an exposure head including light emitting elements such as light emitting diodes (LEDs)
Implementation Method 2
expose a photosensitive member by using an exposure head
Data Source
AI summary
An apparatus includes a member, a head including a plurality of emitting units disposed and configured to expose the member, a generation unit configured to generate image data, and output the image data as serial data, a conversion unit configured to receive the serial data, and convert the serial data into parallel data, a drive unit configured to drive the plurality of emitting units based on the parallel data, a reset unit configured to reset the conversion unit to an initial state, an output unit configured to output an enable signal, and a power source configured to supply power to the conversion unit, wherein, after the power source supplies power to the conversion unit, the output unit outputs the enable signal, and wherein, after the output unit outputs the enable signal, the reset unit resets the conversion unit.