CN112596354A - High-speed scanning control system and method for laser printer - Google Patents

Abstract

The invention relates to a high-speed scanning control system and method of a laser printer, and belongs to the technical field of laser printers. The method is characterized in that: the device comprises a high-speed scanning control circuit, a laser modulation module, an optical component, a Hall sensor and a motor; the laser modulation module, the Hall sensor and the motor are respectively and electrically connected with the high-speed scanning control circuit; the optical component comprises a rotating prism, an F-theta lens and a reflecting mirror, the rotating prism is arranged on the motor, laser emitted by the laser modulation module sequentially passes through the rotating prism, the F-theta lens and the reflecting mirror to be irradiated on the photosensitive drum, the Hall sensor is arranged beside the rotating prism, receives light refracted by the rotating prism and converts the light into a Hall signal to be input into the high-speed scanning control circuit, and the high-speed scanning control circuit adjusts the rotating speed of the motor according to the Hall signal and controls the output signal of the laser modulation module. The invention can improve the printing speed of the A4 paper of the laser printer to 60 PPM.

Description

High-speed scanning control system and method for laser printer

Technical Field

The invention relates to a high-speed scanning control system of a laser printer and a high-speed scanning control method of the laser printer, and belongs to the technical field of laser printers.

Background

The laser printer converts the character and figure information sent by the computer into laser beam, and scans the photosensitive drum at constant speed along the axis of the photosensitive drum after passing through a series of optical systems, so as to form electrostatic latent image corresponding to the input information. The laser printing machine is popular with consumers due to the characteristics that the speed is high, the page yield is high, printed products cannot generate fuzzy writing after a plurality of years, the laser printing machine is one of office equipment essential for modern enterprises, the printing speed is an important parameter of the printer, the most common printing task of the enterprise is the printing of A4 paper, the laser printer capable of printing about 10A 4 paper sheets per minute is called a low-speed machine, 25-40 medium-speed machines and more than 50 medium-speed machines on the basis of the printing speed of A4 paper, the enterprise pays more attention to the printing speed of the laser printer when a large number of printing tasks are available, and the laser printing machine is developed in a direction of improving the printing speed as much as possible on the premise of not influencing the quality of printed contents.

Disclosure of Invention

The invention aims to provide a high-speed scanning control system and a high-speed scanning control method of a laser printer, which are used for controlling the laser printer to improve the printing speed as much as possible on the premise of not influencing the quality of printed contents.

The technical scheme is as follows:

a high-speed scanning control system of a laser printer comprises a high-speed scanning control circuit, a laser modulation module, an optical component, a Hall sensor and a motor; the laser modulation module, the Hall sensor and the motor are respectively and electrically connected with the high-speed scanning control circuit; the optical component comprises a rotating prism, an F-theta lens and a reflecting mirror, the rotating prism is arranged on the motor, laser emitted by the laser modulation module sequentially passes through the rotating prism, the F-theta lens and the reflecting mirror to be irradiated on the photosensitive drum, the Hall sensor is arranged beside the rotating prism, receives light refracted by the rotating prism and converts the light into a Hall signal to be input into the high-speed scanning control circuit, and the high-speed scanning control circuit adjusts the rotating speed of the motor according to the Hall signal and controls the output signal of the laser modulation module.

Furthermore, the high-speed scanning control circuit comprises a control chip (cpu), a Data Manager (DMA), an expansion distributor (Axi _ interconnect), a speed regulation core (LSU _ TOP), and a motor control module MC _ controller, wherein the control chip is respectively in data connection with the data manager, the motor control module, and each module in the speed regulation core through the expansion distributor; the speed regulation core comprises a clock management module blocking _ Wizard, a power supply regulation module Ld _ power _ pwm, an encoding regulation module LSU _ core, a delay module Data _ buf, a sending module axi _ LSU _ if (servers _ out), a line synchronization management module hsync _ management and a Data registration module LSU _ reg; the data manager is connected with the coding adjusting module, the delay module and the sending module are sequentially in data connection, the sending module is connected with the laser modulation module, the motor control module is connected with the motor, the line synchronization management module is connected with the Hall sensor and receives position signals, and the power supply adjusting module outputs adjusting signals outwards.

Furthermore, the control chip schedules functions among the modules, compares data of the line synchronization management module with data of the clock management module, judges whether the motor is stable or not, adjusts the rotating speed of the motor through the motor control module, inputs data in the data manager into the coding adjustment module for processing, and outputs the processed data through the sending module.

Furthermore, the number of the data managers is two or more, the data managers are connected with each other through the control connectors, and the data in the memory are directly sent to the coding adjustment module through the FIFO data transmission bus.

Furthermore, the clock management module multiplies or divides the standard clock frequency to provide the standard clock frequency for different modules to use.

Further, the code adjusting module adjusts and switches the states of other modules according to the command of the data registering module.

Furthermore, the data register module uses the multiplexer to convert the bus data and store the bus data into the register.

Furthermore, the speed regulation core is an FPGA chip.

A high-speed scanning control system of a laser printer adopts the following steps:

step S1: a control chip in the high-speed scanning control circuit starts a motor after the data manager receives the printing data;

step S2: the control chip commands the laser modulation module to emit laser after determining that the motor is stable;

step S3: laser refracted by the rotating prism is received through the Hall sensor and converted into a Hall signal to be transmitted to the high-speed scanning control circuit;

step S4: the high-speed scanning control circuit compares the Hall signal with the clock signal to acquire motor rotating speed data, and changes the rotating speed of the motor through the motor control module;

step S5: when the rotating speed of the motor reaches the set value, the sending module sends the printing data to the laser modulation module to be converted into optical signals to carry out printing operation.

Has the advantages that:

the invention dispatches the functions among all modules through the control chip, adjusts the rotating speed of the motor through the position of the motor, and can improve the A4 paper printing speed of the laser printer to 60PPM (number of printed pages per minute) in cooperation with data output.

Drawings

FIG. 1 is a schematic diagram of a high speed scanning control system;

FIG. 2 is a flow chart of a high speed scan control method;

FIG. 3 is a logic diagram of a high speed scanning control system and method for a laser printer;

wherein: the system comprises a control chip 1, a data manager 2, an extension distributor 3, a motor control module 4, a speed regulation core 5, a clock management module 51, a power supply regulation module 52, a code regulation module 53, a delay module 54, a sending module 55, a line synchronization management module 56, a data registration module 57, a high-speed scanning control circuit 100, a motor 200, a hall sensor 300, a laser modulation module 400, an optical assembly 500, a rotating prism 510, an F-theta lens 520 and a reflector 530.

Detailed Description

The invention is described in detail below with reference to the following figures and specific examples:

the high-speed scanning control system of the laser printer shown in fig. 1 comprises a high-speed scanning control circuit 100, a laser modulation module 400, an optical assembly 500, a hall sensor 300 and a motor 200; the laser modulation module 400, the hall sensor 300 and the motor 200 are respectively electrically connected with the high-speed scanning control circuit 100; the optical assembly 500 includes a rotary prism 510, an F-theta lens 520 and a reflecting mirror 530, the rotary prism 510 is installed on a motor, the laser emitted from the laser modulation module 400 is irradiated on a photosensitive drum sequentially through the rotary prism 510, the F-theta lens 520 and the reflecting mirror 530, the Hall sensor 300 is installed beside the rotary prism 510, receives the light refracted from the rotary prism 510 and converts the light into a Hall signal to be input to the high-speed scanning control circuit 100, the high-speed scanning control circuit 100 adjusts the rotation speed of the motor 200 according to the Hall signal and controls the laser modulation module 400 to output a signal

The high-speed scanning control circuit comprises a control chip 1, a data manager 2, an expansion distributor 3, a speed regulation core 5 and a motor control module 4, wherein the control chip 1 is respectively in data connection with the data manager 2, the motor control module 4 and each module in the speed regulation core 5 through the expansion distributor 3; the speed regulation core comprises a clock management module 51, a power supply regulation module 52, a coding regulation module 53, a delay module 54, a sending module 55, a line synchronization management module 56 and a data registration module 57, the data manager 2 is connected with the coding regulation module 53, the delay module 54 and the sending module 55 are sequentially in data connection, the sending module 55 is connected with the laser modulation module 400, the line synchronization management module 56 is connected with the Hall sensor 300 and receives position signals, and the power supply regulation module 52 outputs regulation signals outwards.

The control chip 1 schedules functions among the modules, compares data of the line synchronization management module 56 with data of the clock management module 51, judges whether the motor 200 is stable, adjusts the rotating speed of the motor 200 through the motor control module 4, inputs data in the data manager 2 into the code adjustment module 53 for processing, and outputs the processed data through the transmission module 55.

The data manager 2 is connected with the control connector 3, and sends the data in the memory to the code adjustment module 53 directly through the FIFO data transmission bus.

The clock management module 51 multiplies or divides the standard clock to provide the standard clock to different modules for use.

The code adjusting module 53 adjusts and switches the states of other modules according to the command of the data registering module 57.

The data register module 57 converts and stores the bus data into the register using the multiplexer.

The speed regulation core 5 is an FPGA chip.

A high-speed scanning control system of a laser printer adopts the following steps:

step S1: a control chip in the high-speed scanning control circuit starts a motor after the data manager receives the printing data;

step S2: the control chip commands the laser modulation module to emit laser after determining that the motor is stable;

step S3: laser refracted by the rotating prism is received through the Hall sensor and converted into a Hall signal to be transmitted to the high-speed scanning control circuit;

step S4: the high-speed scanning control circuit compares the Hall signal with the clock signal to acquire motor rotating speed data, and changes the rotating speed of the motor through the motor control module;

step S5: when the rotating speed of the motor reaches the set value, the sending module sends the printing data to the laser modulation module to be converted into optical signals to carry out printing operation.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and scope of the present invention are intended to be covered thereby.

Claims (9)

1. A high-speed scanning control system of a laser printer is characterized in that: the device comprises a high-speed scanning control circuit (100), a laser modulation module (400), an optical component (500), a Hall sensor (300) and a motor (200); the laser modulation module (400), the Hall sensor (300) and the motor (200) are respectively and electrically connected with the high-speed scanning control circuit (100); the optical component (500) comprises a rotating prism (510), an F-theta lens (520) and a reflecting mirror (530), the rotating prism (510) is installed on a motor, laser emitted by the laser modulation module (400) sequentially passes through the rotating prism (510), the F-theta lens (520) and the reflecting mirror (530) to be irradiated onto a photosensitive drum, a Hall sensor (300) is installed beside the rotating prism (510), light refracted by the rotating prism (510) is received and converted into a Hall signal to be input into the high-speed scanning control circuit (100), and the high-speed scanning control circuit (100) adjusts the rotating speed of the motor (200) according to the Hall signal and controls the output signal of the laser modulation module (400).

2. A high speed scanning control system for a laser printer as claimed in claim 1, wherein: the high-speed scanning control circuit comprises a control chip (1), a data manager (2), an expansion distributor (3), a speed regulation core (5) and a motor control module (4), wherein the control chip (1) is in data connection with the data manager (2), the motor control module (4) and each module in the speed regulation core (5) through the expansion distributor (3); the speed regulation core comprises a clock management module (51), a power supply regulation module (52), a coding regulation module (53), a delay module (54), a sending module (55), a line synchronization management module (56) and a data registration module (57), a data manager (2) is connected with the coding regulation module (53), the delay module (54) and the sending module (55) are sequentially in data connection, the sending module (55) is connected with a laser modulation module (400), the line synchronization management module (56) is connected with a Hall sensor (300) and receives position signals, and the power supply regulation module (52) outputs regulation signals outwards.

3. A high speed scanning control system for a laser printer as claimed in claim 2, wherein: the control chip (1) schedules functions among the modules, compares data of the line synchronization management module (56) with data of the clock management module (51) for calculation, judges whether the motor (200) is stable, adjusts the rotating speed of the motor (200) through the motor control module (4), inputs data in the data manager (2) into the coding adjustment module (53) for processing, and outputs the processed data through the sending module (55).

4. A high speed scanning control system for a laser printer as claimed in claim 2, wherein: the data managers (2) are two or more and are connected with each other through the control connector (3), and the data in the memory are directly sent to the coding adjustment module (53) through the FIFO data transmission bus.

5. A high speed scanning control system for a laser printer as claimed in claim 2, wherein: the clock management module (51) multiplies or divides the standard clock frequency and provides the standard clock frequency to different modules for use.

6. The high-speed scanning control system and method of a laser printer according to claim 2, wherein: the code adjusting module (53) adjusts and switches the states of other modules according to the command of the data registering module (57).

7. A high speed scanning control system for a laser printer as claimed in claim 2, wherein: the data register module (57) converts the bus data into a register by adopting a multiplexer and stores the bus data into the register.

8. A high speed scanning control system for a laser printer as claimed in claim 2, wherein: the speed regulation core (5) is an FPGA chip.

9. A high-speed scanning control method of a laser printer, characterized by using the high-speed scanning control system according to any one of claims 1 to 8 and by the steps of:

step S1: a control chip in the high-speed scanning control circuit starts a motor after the data manager receives the printing data;

step S2: the control chip commands the laser modulation module to emit laser after determining that the motor is stable;

step S3: laser refracted by the rotating prism is received through the Hall sensor and converted into a Hall signal to be transmitted to the high-speed scanning control circuit;

step S4: the high-speed scanning control circuit compares the Hall signal with the clock signal to acquire motor rotating speed data, and changes the rotating speed of the motor through the motor control module;

step S5: when the rotating speed of the motor reaches the set value, the sending module sends the printing data to the laser modulation module to be converted into optical signals to carry out printing operation.

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