Unlock instant, AI-driven research and patent intelligence for your innovation.

Control circuit for increasing potential difference between developing roller and powder feeding roller and printer thereof

A technology for controlling a circuit and a powder feeding roller, which is applied to an electric recording process applying a charge pattern, an equipment for an electric recording process applying a charge pattern, an electric recording technique, etc. It can improve the quality and efficiency of powder feeding, realize continuous fine control, and simplify the circuit connection structure.

Pending Publication Date: 2020-07-14
ZHUHAI CHINAMATE TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the utilization rate of carbon powder in contact development is generally between 80-90%. However, there are still 10-20% of carbon powder that cannot be effectively utilized and become waste powder.
The generation of waste toner will bring the following problems: 1. The volume of the toner box increases, and the capacity of the waste toner bin and toner bin needs to be increased to meet the needs of the same page output; 2. The development cost increases. The box needs to increase the amount of powder filled; 3. The pollution to the environment increases and the environmental protection decreases
In the prior art, a plurality of power supply voltages are usually provided, and when the surface potential of the photoreceptor is set to be about -650V, the developing bias applied to the developing roller 5' by one power supply voltage is at -350V; in addition, in order to make The carbon powder moves electrostatically from the powder feeding roller 6 to the developing roller 5' to generate the necessary polarity and electric field voltage, and applies a voltage of -400V to -700V to the powder feeding roller 4 through another power supply voltage, such as applying a voltage of -650V ; The power supply mode of multiple power supply voltages causes the circuit structure between the developing roller 5' and the powder feeding roller 6' of the printer to be complicated, which increases the production cost of the printer; moreover, in the narrow space of the printer, the complicated circuit The structure is not only inconvenient for setting and connecting the lines, but also greatly reduces the reliability of the product

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Control circuit for increasing potential difference between developing roller and powder feeding roller and printer thereof
  • Control circuit for increasing potential difference between developing roller and powder feeding roller and printer thereof
  • Control circuit for increasing potential difference between developing roller and powder feeding roller and printer thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A control circuit that increases the potential difference between the developing roller and the powder feeding roller, such as figure 2 As shown, the toner feeding applied to the printer includes a developing bias circuit unit 1 and a drum circuit unit 2. The developing bias circuit unit 1 is arranged in the body of the printer. The toner drum circuit unit 2 includes a developing roller 20 and a powder feeding roller 21, and the two ends of the developing roller 20 and the powder feeding roller 21 are respectively connected to the circuit through wires.

[0032] continue as figure 2As shown, the developing bias circuit unit 1 provides a single developing bias to the toner drum circuit unit independently. The developing bias circuit unit 1 includes an alternating voltage source 3 and an inductive element 4. The inductive element 4 has An input coil 40 and an output coil 41 are connected to the alternating voltage source 3 through the input coil 40, and an output volta...

Embodiment 2

[0037] Such as image 3 As shown, the difference between this embodiment and Embodiment 1 is that the toner drum circuit unit 2 also includes a powder discharge scraper 23 connected in parallel with the powder feeding roller 21, and the powder discharge scraper 23 is connected in parallel with the powder feed roller 21 and grounded. The powder scraper 23 is connected to the lower end of the Zener diode 22 and simultaneously formed to reduce the developing bias, so that a potential difference is formed between the developing roller 20 and the powder discharging scraper 23 to facilitate the powder discharging scraper 23 to repel the carbon powder and increase the carbon powder particles on the developing roller 20 The amount of charging can further improve the developing quality of the developing roller 20 and save toner, realize the continuous fine control of the developing process, and effectively improve the quality of the final printing effect of the paper on the printer. Be...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a control circuit for increasing the potential difference between a developing roller and a powder feeding roller and a printer thereof. The circuit is applied to printer powder feeding. The circuit comprises a developing bias circuit unit and a toner cartridge circuit unit, wherein the developing bias circuit unit is arranged in a printer body of the printer, and the developing bias circuit unit provides developing bias for the toner cartridge circuit unit; the toner cartridge circuit unit comprises a developing roller and a powder feeding roller, and the two ends of the developing roller and the two ends of the powder feeding roller are connected with a circuit through wires respectively; the developing bias circuit unit is used for independently providing a single developing bias voltage for the selenium drum circuit unit; a developing roller and a powder feeding roller in the selenium drum circuit unit are arranged in parallel and connected with developing bias of the developing bias circuit unit, and the powder feeding roller circuit is further connected with a voltage stabilizing diode used for reducing the developing bias and enabling a potential difference to be formed between the developing roller and the powder feeding roller to facilitate effective powder feeding of the powder feeding roller.

Description

【Technical field】 [0001] The invention relates to the technical field of printers, in particular to a control circuit for increasing the potential difference between a developing roller and a powder feeding roller and a printer thereof. 【Background technique】 [0002] Electrophotographic imaging devices, such as laser printers, irradiate a photosensitive drum with a predetermined potential by laser scanning to form an electrostatic latent image on its surface. The electrostatic latent image is developed with a predetermined toner, and then the developed image is transferred to the paper, and then the transferred image is fixed to become a visible image that can be observed by the naked eye, thereby realizing the image-signal --Transition between images. [0003] In the field of imaging technology, a common laser printer is provided with a charging roller, a photosensitive drum, a laser scanning mechanism, a developing device, a transfer roller and a fixing roller, etc. in i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G03G15/08
CPCG03G15/0808G03G15/0812G03G15/0896
Inventor 李军伟
Owner ZHUHAI CHINAMATE TECH