CN202631964U

CN202631964U - Laser diode (LD) electricity removing device

Info

Publication number: CN202631964U
Application number: CN 201220210684
Authority: CN
Inventors: 许胜兵
Original assignee: NANJING TIANZHONG ELECTROMECHANICAL REPRODUCING CO Ltd
Current assignee: NANJING TIANZHONG ELECTROMECHANICAL REPRODUCING CO Ltd
Priority date: 2012-05-11
Filing date: 2012-05-11
Publication date: 2012-12-26
Anticipated expiration: 2022-05-11

Abstract

The utility model discloses a laser diode (LD) electricity removing device. The device comprises an image forming system, a ray path transmission system, LD ray providing devices and a control device, wherein the LD ray providing devices provide two LD rays simultaneously; the control device is used for controlling the valid and invalid states of the LD rays; the ray path transmission system comprises a polygon prism motor, a lens and two reflectors, and the polygon prism motor and the lens are communally used by the two LD rays; the polygon prism motor is positioned over the lens; and the reflectors are respectively arranged at the inclined lower positions of the two sides of the lens. By the LD electricity removing device, electricity on surfaces of a photosensitive drum is removed by laser rays, so that the problem of an incomplete image appearing on an image is solved, and the whole device has high reliability and high performance; an LD used for drawing and an LD used for removing the electricity communally use one polygon prism motor and one lens, so that cost is reduced and space is saved; and an electricity removing effect is obvious, and the application range of the device is wide.

Description

The LD neutralizer

Technical field

The utility model relates to a kind of LD (laser) neutralizer, is particularly useful for various printers and duplicating machine system.

Background technology

In existing imaging system, all lack effective means on basic, prevent that fully the image retention in photosensitive drums cycle from producing; Now usually usefulness is in the mode of removing electric LED lamp, promptly charged before, comes once all electricity that removes to photosensitive drum surface, but owing to the characteristics of the radiative angle of LED lamp self and light stack etc.; Cause the energy heterogeneity of the light when arriving the drum surface; Cause and remove electricity back drum surface voltage heterogeneity, charged once more after, the difference of drum table current potential still exists; In video picture, will produce the image retention in photosensitive drums cycle on the portrait like this.And the scope that this mode is used is narrow, and the mode of removing electric LED is widely used in the machine of low and middle-end at present, also has certain limitation on Higher-end machines, adopting.

The utility model content

In order to overcome the deficiency that exists in the prior art, the utility model provides a kind of LD (laser) neutralizer, high-level efficiency, and high usable range is applicable to various speed, the printer of various high low sides and duplicating machine effectively improve the reliability of equipment.

For solving the problems of the technologies described above; The utility model provides a kind of LD neutralizer; Comprise: portrait formation system and optic path system also comprise the LD of two LD light light generator and the control device that is used to control the effective and disarmed state of LD light are provided simultaneously.

Said optic path system comprises a shared polygon prism motor of two LD light, shared lens and two catoptrons, and said polygon prism motor is positioned at position directly over the lens, and said catoptron lays respectively at lens two skew back lower positions.

Said portrait formation system comprises photosensitive drums, charged roller, phenomenon roller and transcription roller; Said charged roller is positioned at photosensitive drums top surface location; Said transcription roller is positioned at photosensitive drums surface below position; Said phenomenon roller is positioned at photosensitive drums right lateral surface position.

Two LD light that said LD light generator provides are LD1 and LD2, said LD1 after said optic path system point of irradiation between charged roller and phenomenon roller, said LD2 after said optic path system point of irradiation between charged roller and transcription roller.

Beneficial effect: the LD neutralizer that the utility model provides; Remove electric mode through laser to photosensitive drum surface, when making each photosensitive drum surface charged once more, the current potential of photosensitive drums table is in low-down level; Approach 0; Avoided on portrait, occurring the problem of image retention, whole highly reliable, high-performance; Adopt portrait LD and remove the design of electricity, reduced cost, save the space with shared polygon prism motor of LD and lens; Effect is more obvious, and range of application is more extensive.

Description of drawings

Fig. 1 is the synoptic diagram of the utility model.

Among the figure: 1 polygon prism motor; 2 lens; 3 catoptrons; 4 photosensitive drums; 5 charged roller; 6 phenomenon rollers; 7 transcription rollers; 8 LD light generators; 9 LD1; 10 LD2.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the synoptic diagram that comprises the utility model; The LD neutralizer comprises: portrait formation system and optic path system also comprise the LD of two LD light light generator and the control device that is used to control the effective and disarmed state of LD light are provided simultaneously; The optic path system comprises a shared polygon prism motor 1 of two LD light, shared lens 2 and two catoptrons 3; Portrait formation system comprises photosensitive drums 4, charged roller 5, phenomenon roller 6 and transcription roller 7, and said charged roller 5, phenomenon roller 6 and transcription roller 7 all are positioned at photosensitive drum surface; Two LD light that LD light generator 8 provides are LD1 9 and LD2 10; Said LD1 9 after said optic path system point of irradiation between charged roller 5 and phenomenon roller 6; Point of irradiation is between charged roller 5 and transcription roller 7 after said optic path system for said LD2, and said LD2 10 optical wavelength range are between the 650-780nm.

Following mask body is introduced the principle of work of LD neutralizer in various printer systems:

The point of irradiation position of the LD1 of the utility model is mainly used on the surface of photosensitive drums 4 and forms electrostatic latent image between charged roller 5 and phenomenon roller 6, condition precedent is provided for the transfer of carbon dust; The position of the point of irradiation of LD2 is mainly used in the residual charge of removing photosensitive drums 4 surface between charged roller 5 and transcription roller 7, make photosensitive drums 4 charged once more after, the current potential homogenization on photosensitive drums 4 surfaces.

The equipment explanation:

Detect under the effective situation prerequisite at main motor, after the △ t1 time, portrait information begins, and the LD1 exposure is effective, and the LD1 exposure effectively lags behind the △ t2 time, and the LD1 exposure is effective

Before the invalid △ t3 of portrait information, the exposure process of LD2 stops, and simultaneously, after the invalid △ t4 time, main motor also stops operating at portrait information.

In the optic path system, two shared lens 2 of LD light, and utilize catoptron 3 that light transmission is arrived position separately, and play corresponding effect and effect, simultaneously, saved the space of LD unit self.

Below disclose the utility model with preferred embodiment, so it is not in order to restriction the utility model, and all employings are equal to replacement or the technical scheme that obtained of equivalent transformation mode, all drop within the protection domain of the utility model.

Claims

1. LD neutralizer comprises: portrait formation system and optic path system is characterized in that: also comprise the LD of two LD light light generator and the control device that is used to control the effective and disarmed state of LD light are provided simultaneously.

2. LD neutralizer according to claim 1; It is characterized in that: said optic path system comprises a shared polygon prism motor of two LD light, shared lens and two catoptrons; Said polygon prism motor is positioned at position directly over the lens, and said catoptron lays respectively at lens two skew back lower positions.

3. LD neutralizer according to claim 1 is characterized in that: said portrait formation system comprises photosensitive drums, charged roller, phenomenon roller and transcription roller; Said charged roller is positioned at photosensitive drums top surface location; Said transcription roller is positioned at photosensitive drums surface below position; Said phenomenon roller is positioned at photosensitive drums right lateral surface position.

4. LD neutralizer according to claim 3; It is characterized in that: two LD light that said LD light generator provides are LD1 and LD2; Said LD1 after said optic path system point of irradiation between charged roller and phenomenon roller, said LD2 after said optic path system point of irradiation between charged roller and transcription roller.