CN202041474U

CN202041474U - Charging roller surface quality detecting device

Info

Publication number: CN202041474U
Application number: CN2011201157990U
Authority: CN
Inventors: 刘江
Original assignee: FOSHAN ESHENTE PRECISION FITTINGS Co Ltd
Current assignee: FOSHAN ESHENTE PRECISION FITTINGS Co Ltd
Priority date: 2011-04-19
Filing date: 2011-04-19
Publication date: 2011-11-16
Anticipated expiration: 2021-04-19

Abstract

The utility model discloses a charging roller surface quality detecting device, which comprises image sensors, a computer and a charging roller rotating mechanism, wherein the image sensors are arranged beside a charging roller, a reflector lamp is arranged beside the image sensors, the image sensors are connected with the computer, the number of the image sensors is multiple, and the image sensors are sequentially ranged in the length direction of the charging roller arranged on the rotating mechanism. After the adoption of the technical scheme, the charging roller surface quality detecting device has the following advantages that (1) the manual inspection is replaced, the manual cost can be reduced, and simultaneously, the work intensity of inspection personnel is reduced; (2) the work efficiency of the detecting equipment is very high through being compared with that of the manual inspection; and (3) the detection is accurate without errors and is very reliable.

Description

The charging roller surface quality detection device

Technical field:

The utility model relates to a kind of charging roller surface quality detection device.

Background technology:

Usually, in imaging device such as the duplicating machine of the use toner that utilizes static electrophotography, facsimile recorder, printer etc., toner supplies to developing apparatus by the toner feed device that comprises toner Cartridge etc. and prints to carry out continuous images.

The imaging process of this imaging device generally includes following steps: charging, exposure, development, transfer printing, separation, cleaning, removing electric charge and photographic fixing.

More specifically, in imaging process, the photosensitive drum surface that is driven in rotation is recharged roller charge equably (charge step).So the photosensitive drum surface of charging uses the laser beam irradiation of exposure device to form electrostatic latent image (step of exposure).Subsequently, the electrostatic latent image on the photosensitive drums is developed the device development to form toner image (development step) at photosensitive drum surface.

Toner image on the photosensitive drums is transferred device and is transferred to (transfer step) on the recording materials, then, is transferred to toner image on the recording materials by fixing device heats and photographic fixing to recording materials (photographic fixing step).

On the other hand, the remaining toner that remains in photosensitive drum surface after transfer step is partly collected (cleaning) with the cleaning device cleaning and with predetermined collection.Photosensitive drum surface after the cleaning is removed residual electric charge to prepare imaging operation (electric charge removing step) next time by charge removing device.

Above-mentioned institute in steps in, charging roller charges as first step to photosensitive drum surface, the quality of its charging effect is the follow-up institute of influence implementation quality in steps and final print quality directly, inhomogeneous for fear of charging roller occurring to photosensitive drum charging, must guarantee that the charging roller surface has uniform electric charge, it is very high that this just requires the charging roller surface quality to require, can not have scratch, pit, gauffer, the defective of trachoma etc., when scratch is extrusion molding or handling process produce, when pit and gauffer are extrusion molding, inhomogeneous cooling is even to be caused, and trachoma is because in extruder, and plastics stir inhomogeneous causing, and the charging roller surface exists above-mentioned arbitrary defective all can cause charging roller surface charging inequality, and then it is inhomogeneous to influence photosensitive drum charging, causes can not get accurate electrostatic latent image after the post-exposure.

In order to eliminate above-mentioned deficiency, manufacturer all can arrange special quality inspection personnel that every charging roller is all checked, existing inspection technology is to take charging roller by supervisory personnel's hand, with visual inspection, checks whether the charging roller surface exists above-mentioned defective, this test mode need arrange a plurality of workmans to carry out, cause cost of labor to increase, and checking efficiency is very low, checks that effect is subjected to workman's experience and focus influence, flase drop often appears, the non-constant of the reliability of inspection.

Summary of the invention:

The purpose of this utility model is in order to overcome the shortcoming of above-mentioned prior art, and a kind of reliability height, efficient, charging roller surface quality detection device that can save labour turnover checked is provided.

For achieving the above object, the technical scheme that the utility model provides is: the charging roller surface quality detection device, include image sensor, computing machine and charging roller rotating mechanism, image sensor is located at the next door of charging roller, be provided with shot-light on the image sensor next door, image sensor is connected with computing machine.

Described image sensor is provided with a plurality of, and they are arranged in order along the charging roller length direction on the rotating mechanism.

Image sensor is the CCD camera lens.

Described charging roller rotating mechanism is made of left-handed swivel base and dextrorotation swivel base, is respectively equipped with slide rail in the bottom of left-handed swivel base and dextrorotation swivel base, and the rear of two rotary seats is installed with expansion bend, and expansion bend is connected with rotary seat.

After adopting technique scheme, this charging roller surface quality detection device has following advantage:

1. replace hand inspection, can reduce cost of labor, reduce supervisory personnel's working strength simultaneously.

2. the hand inspection of comparing, the work efficiency of this checkout facility is very high.

3. check accurate, very reliable.

Description of drawings:

Fig. 1 is the structure principle chart of laser beam printer;

Fig. 2 is the structural drawing of facing of the utility model charging roller surface quality detection device;

Fig. 3 is the side-looking structural drawing of the utility model charging roller surface quality detection device.

Embodiment:

Preferred forms of the present utility model is described below with reference to accompanying drawings.

Fig. 1 illustrates the constructed profile as the signal structure of the laser beam printer (being designated hereinafter simply as " printer ") 1 of image processing system according to this embodiment.

This printer 1 receives image information from the image information generator (not shown) such as the principal computer of the outside that is located at printer 1. and according to the image information that is received, a series of images of carrying out the last formation of recording materials (recording medium) P that is used in sheet image forms processing to printer 1 by known electrophotographic system.

Laser beam printer 1 comprises handle box 4, and described handle box 4 accommodates rotatable electronic photographic sensitive drum 2, charging mechanism 8 and the developing device 3 as the drum type of sub-image load bearing component.In addition, printer 1 comprises laser scanner unit (being designated hereinafter simply as " scanner ") 5, and it forms the electrostatic latent image corresponding with image information according to the image information from the input of image information generator by exposure-processed on the outer surface of photosensitive drums 2.Printer 1 also comprises realization to the rotatable transfer member 6 of the roller shape of the processing of recording materials P transferred image, and is realizing that photographic fixing is handled, as to be used as image heater fixing device 7 with heat and pressure on the recording materials P of its transferred image.

Handle box 4 is printed the machine main body and removably supports.Printer main body forms the image processing system part beyond the handle box.When the repairing that needs photosensitive drums 2 and such as the time to the safeguarding of developing device 3 replenishment developers, opened can open and can be printed the lid 9 of machine body supports with closing after, can replace handle box 4 with new handle box, carry out rapidly and simply thus and safeguard.

Charging mechanism 8 critical pieces are charging roller 81, charging roller 81 is suitable for by apply the bias voltage (regulated bias) of regulation from source power supply before the exposure-processed of scanner 5, make the outer surface of the photosensitive drums 2 during the rotation be charged to the Potential distribution of regulation, in order to make photosensitive drums 2 surface chargings even, require charging roller 81 surface quality very high, can not there be scratch, pit, gauffer, the defective of trachoma etc., otherwise, charging back photosensitive drums 2 surface charge skewness, electrostatic latent image degree of accuracy after exposure is looked into very much again, when serious even cause printing the literal or the pattern of difference.

Scanner 5 output is according to from the time period electric data image signal of series of the image information of image information generator and modulated laser La.By being located at the window 4a in the handle box, laser La scans the charging zone on the outer surface of photosensitive drums 2 and exposes.Thus, corresponding with image information electrostatic latent image is formed on the outer surface of photosensitive drums 2.

Next, a series of images in the printer 1 being formed processing describes.When pressing the start button (not shown) that is located in the printer, photosensitive drums 2 begins rotation.Photosensitive drums 2 is along the circumferential speed rotation of the clockwise direction shown in the arrow K1 with regulation.Simultaneously, the charging mechanism 8 of the bias voltage by being applied in regulation, the outer surface of photosensitive drums 2 is charged to the Potential distribution of regulation.

Next, according to the image information from the image information generator, the charging zone on the outer surface of 5 pairs of photosensitive drums 2 of scanner is scanned and is exposed.Therefore, corresponding with described image information electrostatic latent image is formed on the described charging zone of photosensitive drums 2.The developer that this electrostatic latent image is developed device 3 develops and as toner image and visual.

Simultaneously, by with the predetermined driven feed rolls 12 of timing from feeding box 11 1 time periods ground feeding recording materials P.Comprise many recording materials P that are layered in wherein in the feeding box 11.Feeding box 11 is printed machine and removably supports.The recording materials P that supplies with from feeding box 11 regularly is fed to the transfer printing pressing part that be formed on photosensitive drums 2 and transfer member 6 between to 12a with expectant control by registration roller (resist roller), and is held and carries by transfer printing pressing part.When recording materials P was held and carries by transfer printing pressing part, the toner image on the photosensitive drums 2 was transferred to recording materials P successively by transfer member 6.

The recording materials P that is transferred toner image stands toner image heating and photographic fixing processing in fixing device 7 after,, and be discharged to outside the printer by paper outlet roller 13 by the photographic fixing distributing roller 10 that is rotatably supported.The recording materials P that is discharged from rests on the paper output tray 14 that is attached to the printer top surface.In this way, finish a series of image and form processing.

Fixing device 7 comprises fixing roller 15 and pressure roll 16.Fixing roller 15 is by the rotatably supported roller shape of not shown structure parts, and can be by not shown shaft drive axis to rotation.The toner that has the formation unfixed toner image that not shown heating element carries with heating and the recording medium that partly transmits from transfer nip of photographic fixing in this fixing roller 15, thus with image fixing to recording medium.

As fixing roller 15, can use the roller shape parts that for example form by metal-cored and elastic layer.Metal-cored by forming such as metals such as iron, stainless steel, aluminium.Elastic layer is by forming such as silicon rubber, fluororubber elastomeric material.When the never illustrated power supply service voltage of heating element, heating element produces heat.Heating element can use Halogen lamp LED, infrared lamp etc.

Pressure roll 16 is supported and presses the roller shape parts of fixing roller 15 rotatably by not shown pressure elements.This pressure roll 16 is actuated to rotate along with the rotation of fixing roller 15.Pressure contact portion between fixing roller 15 and the pressure roll 16 divides the formation fusing nip portion.

When toner image heated by fixing roller 15 and photographic fixing when recording medium P goes up, the toner of pressure roll 16 by will fusing is pressed onto recording medium P and goes up and help toner image to recording medium P.

Pressure roll 16 can use the roller shape parts that have same structure with fixing roller 15.Also can comprise heating element in the pressure roll 16.As this heating element, can use with fixing roller 15 in identical heating element.

In fixing device 7, the recording medium of the toner image that has when transfer printing on it is during by fusing nip portion, and the toner that forms toner image is by photographic fixing and be pressed onto on the recording medium, thus toner image by photographic fixing to recording medium.Printing on it has the record images medium to be discharged to paper output tray 14 by paper outlet roller 13.

In order to guarantee 81 pairs of photosensitive drums uniform charging of charging roller, charging roller 81 all needs increase to detect operation together during fabrication, detect the charging roller surface of being produced and whether have defective, qualified to guarantee every charging roller that finally dispatches from the factory 81, qualified charging roller 81 its surface charging excellent performances.

Below we in conjunction with the accompanying drawings 2 and accompanying drawing 3 describe charging roller surface quality detection device embodiment in the technical program in detail.

This charging roller surface quality detection device includes image sensor a1, computing machine a2 and charging roller rotating mechanism a3, this image sensor a1 is the CCD camera lens, the CCD camera lens has four, they are located at the top of charging roller 81 side by side along charging roller 81 length directions, because the area that the CCD lens shooting arrives is limited, by arranging four CCD camera lenses, can be divided into four surveyed areas to charging roller 81 along its length, every CCD camera lens is responsible for detecting a zone, be provided with shot-light a4 on image sensor a1 next door, the effect of shot-light a4 is towards a side of the CCD camera lens light belt of breaking forth columned charging roller surface, CCD camera lens photography light belt draws image, the CCD camera lens is connected with computing machine a2, this computing machine a2 is equipped with image analysis software, the CCD lens shooting to image send image analysis software to, because being incident upon light belt effect that charging roller surface forms, shot-light a4 can be subjected to the influence whether charging roller surface smoothness and raw material mix, if blackening appears in the somewhere, illustrate that there is pit in this place, trachoma or gauffer, analytical work is finished automatically by image analysis software, there is blackening in the image, image analysis software will be sent caution by computing machine a2, represents that this tested charging roller fails.Described charging roller rotating mechanism a3 is made of left-handed swivel base a31 and dextrorotation swivel base a32, below left-handed swivel base a31 and dextrorotation swivel base a32, be provided with slide rail a5, the bottom of two rotary seats is provided with slide block a6, slide block a6 cooperates with slide rail a5, the rear of two rotary seats is installed with expansion bend a7, expansion bend a7 is connected with rotary seat, expansion bend a7 is responsible for the driven in rotation seat and slides, when the operator is positioned over charging roller 81 between left-handed swivel base a31 and the dextrorotation swivel base a32, press button, expansion bend a6 promotes two rotary seats and does relative motion, clamp charging roller 81, then, left-handed swivel base a31 and dextrorotation swivel base a32 rotate simultaneously, driving charging roller 81 rotates, in rotating process, the CCD camera lens is ceaselessly taken being created in the lip-deep light belt of charging roller, image is sent to computing machine a2, by image analysis software image is carried out photometric analysis, there is blackening in tested charging roller, and computing machine a2 makes caution, represent that this product is a waste product, if there is not blackening, computing machine a2 does not warn, represent that this charging roller is qualified product.

The above only is preferred embodiment of the present utility model, is not the utility model is done any pro forma restriction.Any those of ordinary skill in the art, do not breaking away under the technical solutions of the utility model scope situation, all can utilize the method and the technology contents of above-mentioned announcement that technical solutions of the utility model are made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.So every content that does not break away from technical solutions of the utility model, the equivalence of doing according to shape, structure and the principle of the utility model changes, and all should be covered by in the protection domain of the present utility model.

Claims

1. the charging roller surface quality detection device includes image sensor, computing machine and charging roller rotating mechanism, and it is characterized in that: image sensor is located at the next door of charging roller, is provided with shot-light on the image sensor next door, and image sensor is connected with computing machine.

2. charging roller surface quality detection device according to claim 1 is characterized in that: described image sensor is provided with a plurality of, and they are arranged in order along the charging roller length direction on the rotating mechanism.

3. charging roller surface quality detection device according to claim 1 and 2 is characterized in that: image sensor is the CCD camera lens.

4. charging roller surface quality detection device according to claim 1, it is characterized in that: described charging roller rotating mechanism is made of left-handed swivel base and dextrorotation swivel base, bottom at left-handed swivel base and dextrorotation swivel base is respectively equipped with slide rail, the rear of two rotary seats is installed with expansion bend, and expansion bend is connected with rotary seat.