CN200997047Y - Processing kit for laser printer - Google Patents

Abstract

A processing box for laser printer is provided, which comprises a carbon powder bin that is positioned on a processing box frame to store carbon powder, a development roller for conveying the carbon powder to a development drum, an adjustment plate for adjusting the thickness of carbon powder on the surface of the development roller and a development roller for converting electrostatic latent image into visible image. A spring electric contact is positioned in the internal cavity of the development drum and is connected electrically to a conducting cylinder overlapping with a middle axle of the development drum; the conducting cylinder is supported at the lateral wall of the processing box vertical to the middle axle of the development drum. The utility model is characterized in that: the conducting cylinder is connected electrically to one end of an electrode piece; another end of the electrode piece is positioned on the processing box, parallel to the bottom wall of the middle axle in the development drum and is next to the grounding contact of the laser printer corresponding to the conducting cylinder; the surface for supporting the outermost end of the lateral wall for the processing box is configured as a plane.

Description

The laser printer handle box

Technical field

The utility model relates to the laser printer handle box, and this handle box is removably installed on the laser printer, is used for supply toner, and the electrostatic latent image that photosensitive drums forms is converted to visual image on the recording mediums such as being recorded in paper by developers such as carbon dusts.

Background technology

Known laser printer handle box mainly is made of developing cell and image-generating unit.Developing cell mainly comprises toner, puddle support, powder feeding roller, carbon dust thickness adjusting plate and developer roll.These five parts all are arranged on the handle box framework.Image-generating unit mainly comprises photosensitive drums and charging roller, and the two is installed on the cleaning framework.In developing cell, toner provides the storage space and the suitable carbon dust transfer passage of carbon dust; Puddle support evenly distributes the stand-by carbon dust of transporting to developer roll by the rotation of self; The carbon dust thickness adjusting plate provides carbon dust thickness adjusted function to developer roll; Developer roll is adjacent to photosensitive drums, and the charge effect that electromotive force there are differences by polarity is identical makes carbon dust be adsorbed in electrostatic latent image zone on the photosensitive drums.Charging roller periphery in the image-generating unit is pressed against the photosensitive drums periphery tightly, and provides charge function to photosensitive drums, and it is identical with toner charge polarity but have the electric charge of potential difference to make the photosensitive drums photosensitive region carry polarity.Can constitute a complete process box that comprises developing cell and image-generating unit by fixed or movable connected mode between developing cell and the image-generating unit, also can constitute a powder/selenium cartrige that only comprises the Delevoping cartridge of developing cell or only comprise image-generating unit respectively by the connected mode of activity.The former, the handle box that promptly comprises developing cell and image-generating unit only needs to cooperate with the respective electrical contact point and the laser induced system that are provided with on the laser printer.The latter, the Delevoping cartridge that promptly only comprises developing cell then needs to cooperate with the respective electrical contact point, the powder/selenium cartrige and the laser induced system of the printer of packing into that are provided with on the laser printer.Both difference show as comprise photosensitive drums and charging roller powder/selenium cartrige whether with the setting of laser printer consubstantiality or be not an individual components.

Under handle box was packed the user mode of laser printer into, photosensitive drum surface was charged equably by charging roller.Laser scanner is launched the laser that contains image information to photosensitive drums, forms corresponding electrostatic latent image at photosensitive drum surface.Carbon dust from developer roll converts the electrostatic latent image on the photosensitive drums to visual image.Along with the rotation of photosensitive drums, replace to transfer roll at the visual image that photosensitive drum surface forms by carbon dust.Through the effect of transfer roll transfer voltage, visual image is transferred on the recording mediums such as paper, with after after warm-up mill and backer roll carry out heating and pressurizing to the visual image on the recording medium, with the visual image full solidification on recording medium.Finish a basic imaging operation like this.

Referring to Fig. 1,2, be a kind of the existing of complete process box that be equipped with laser printer 1 and respective handling box B.The corresponding holding portion coupling of handle box B profile and laser printer 1, it is provided with toner 5, carbon dust thickness adjusting plate 7, developer roll 4 and photosensitive drums 3.Along photosensitive drums 3 axially, on a side wall 9 of handle box framework, can see, just be supported on this end wall 9 with an axial termination of the fixedly connected photosensitive drums 3 of carbon dust collecting bin 14.On end wall 9, be provided with the set of gears gearing, with the rotation transitive relation between the axial termination of the axial termination of realizing developer roll 4 and photosensitive drums 3.Photosensitive drums 3 is provided with the spring contact (not shown) in the chamber within it.This spring contact is by being connected with the corresponding earthing contact of printer 1 with the conductive pole 8 that is positioned on the aforementioned end wall that photosensitive drums 3 axis overlap, and this earthing contact is positioned at the inwall perpendicular to photosensitive drums 3 axis that laser printer 1 is used to hold the container cavity of handle box B.Simultaneously, such handle box B also is provided with the reference column 12 with the corresponding locating slot (not shown) coupling of printer on aforementioned end wall 9.This reference column is cylindric, and its axis is parallel to the photosensitive drums axis.Under confined state, the vertical that this reference column 12 is positioned at the photosensitive drums axis upward.

Because the variation of laser printer model and style, there is bigger position difference in the earthing contact of printer.For example with HP393 and HP74 type printer, the former earthing contact be positioned at printer be used for the admission processing box cavity perpendicular to photosensitive drum shaft to sidewall, utilize reference column 12 to realize the handle boxes location; The latter's earthing contact then be positioned at printer be used for the admission processing box cavity be parallel to photosensitive drum shaft to diapire, need not reference column and assist the location.Both other parts keep identical structure.Thus, the laser printer that primary structure is identical, only because the existence of the position difference of earthing contact and reference column just may produce the corresponding with it handle box of many moneys, thereby reduced the versatility of handle box, the user also can meet with the problem of buying inconvenience and cost increase owing to the specificity of handle box.The characteristics requirement installation and the maintenance job of conductive pole and reference column are comparatively meticulous, otherwise the handle box of same model also can not be used for the laser printer corresponding with it because of its position difference, causes unnecessary loss.

The utility model content

The utility model purpose is to provide a kind of and laser printer to have laser printer handle box than the strong fix suitability.

According to the laser printer handle box of above-mentioned purpose design, comprise all be arranged at being used on the handle box framework store carbon dust toner, be used for carbon dust is converted to the developer roll of photosensitive drums, the photosensitive drums that is used to regulate the adjustable plate of developer roll surface carbon powder layer thickness and is used for electrostatic latent image is converted to visual image.Be provided with the spring electric contact in the photosensitive drums inner chamber.The spring electric contact keeps electrical connection with the conductive pole that overlaps with the photosensitive drums axis.This conductive pole is supported on the sidewall of handle box perpendicular to the photosensitive drums axis.Conductive pole is electrically connected with an end of electrode slice, and the other end of electrode slice is positioned on the diapire that handle box is parallel to the photosensitive drums axis position corresponding to the laser printer earthing contact near the conductive pole place.The surface of the handle box sidewall outermost end of supporting conductive pole is the plane.

The utility model laser printer handle box, to be positioned at the single electrically conducting manner of handle box by the electrode slice of newly establishing perpendicular to the conductive pole on the sidewall of photosensitive drums axis, expand to have concurrently and be parallel to the mode that also can conduct electricity on the diapire of photosensitive drums axis, thereby its applicability is extended to the printer of similar profile and function of the same race at handle box.So, can avoid the user when the buying handle box, to be difficult to buy the worry of specific items.In addition, improved handle box is the not restriction of subject printer model substantially, and the matching problem that causes because of printer electrode position reason is solved, and helps the intensive utilization starting material, reduces production costs.

The drawing explanation

The laser printer sectional view that is equipped with handle box that Fig. 1 is known.

The known handle box skeleton view of Fig. 2.

Fig. 3 the utility model handle box skeleton view.

Fig. 4 the utility model handle box electrode member embodiment one structural representation.

Fig. 5 the utility model handle box electrode member embodiment two structural representations.

Embodiment

Referring to Fig. 1, show a kind of xsect rough schematic view of known laser printer 1.Charging roller 2 is used for surface charging to a predetermined voltage to photosensitive drums 3.Light emitting diode (not shown) in the laser scanner is launched a laser beam.When this laser beam was scanned the cylindrical surface of photosensitive drums 3 along photosensitive drums 3 central axis direction, just start and close pulse so that make the surface-discharge of photosensitive drums 3 selectively.Photosensitive drums 3 is rotated shown in arrow α with the sun.After the surface voltage of photosensitive drums 3 was discharged selectively, developer roll 4 just was used to make the latent electrostatic image developing that is kept on the photosensitive drums 3.The carbon dust 6 that is stored in the toner 5 is transferred to developer roll 4 places, and is adsorbed on developer roll 4 surfaces by magnetic force or static.When developer roll 4 rotated in the counterclockwise direction, adsorbed carbon dust was developed electrostatic latent image and is visual image because of potential difference is transferred to the surface of photosensitive drums 3 through overdischarge.Subsequently, the visual carbon dust images in photosensitive drums 3 surface rotate into lower area with photosensitive drums 3, are transferred on the recording medium such as paper by quoting roller 13, after the High Temperature High Pressure photographic fixing, can finish image recording.

Referring to Fig. 3,4, be the handle box A that is applied to above-mentioned laser printer 1.Member identical with existing handle box B among the figure uses identical mark.Its member comprise all be arranged at being used on the handle box framework store carbon dust 6 toner 5, be used for carbon dust 6 is converted to the developer roll 4 of photosensitive drums 5, the photosensitive drums 3 that is used to regulate the adjustable plate 7 of developer roll 4 surface carbon powder layer thickness and is used for electrostatic latent image is converted to visual image.Be provided with spring electric contact (not shown) in photosensitive drums 3 inner chambers.This spring electric contact forms the acting force of the spring along photosensitive drums 3 central axis direction, so by this acting force of the spring realize with the conductive pole 8 that overlaps with photosensitive drums 3 axis between electrical connection.Conductive pole 8 is the cylindrical electric conductors that have big button-head, and it is supported on the sidewall 9 of handle box A perpendicular to photosensitive drums 3 axis.Conductive pole 8 is realized being electrically connected with electrode slice 10 by penetrating the annulus 101 that is provided with at electrode slice 10 1 ends.Electrode slice 10 other ends are planar shaped plate 102 approximately.Plate 102 place plane parallel are in photosensitive drums 3 axis, and are positioned on the diapire 11 that handle box A is parallel to photosensitive drums 3 axis, and the position is near the position at conductive pole 8 places.This position is corresponding to the earthing contact that is provided with on the laser printer 1.In the present embodiment, this earthing contact be positioned at printer 1 be used for admission processing box A cavity be parallel to the axial diapire of photosensitive drums 3.The handle box sidewall 9 of supporting conductive pole 8 is rendered as flat state along the end face that photosensitive drums 3 central axis direction are positioned at handle box A outermost end.Aforementioned electric pole piece 10 and conductive pole 8 can adopt the mode of integral structure, specifically construct as Fig. 5, keep constant as 102 parts of the plate among Fig. 4, with fixedly connected with conductive pole 8 of an end of electrode slice 10 than the butt end head.

Claims (1)

1. laser printer handle box, comprise and all be arranged at the toner that is used to store carbon dust on the described handle box framework, be used for carbon dust is converted to the developer roll of photosensitive drums, the photosensitive drums that is used to regulate the adjustable plate of developer roll surface carbon powder layer thickness and is used for electrostatic latent image is converted to visual image, be provided with the spring electric contact in the described photosensitive drums inner chamber, described spring electric contact keeps electrical connection with the conductive pole that overlaps with described photosensitive drums axis, described conductive pole is supported on the sidewall of described handle box perpendicular to described photosensitive drums axis, it is characterized in that described conductive pole is electrically connected with electrode slice one end, the described electrode slice other end is positioned on the diapire that described handle box is parallel to described photosensitive drums axis near the position corresponding to described laser printer earthing contact at described conductive pole place, and the surface of supporting the described handle box sidewall outermost end of described conductive pole is the plane.

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