CN201110945Y - Developing box - Google Patents

Abstract

The utility model discloses a developing box, comprising a powder bin which is provided with an opening, a developing roller installed at the opening, side sealing strips arranged at two sides of the opening, and a front sealing strip adhibited below the opening. Two ends of the front sealing strip are covered and are adhibited at the two side sealing strips and are sandwiched between the two ends of the developing roll and the two side sealing strips. Since two ends of the front sealing strip are covered and are adhibited on the side sealing strips and are sandwiched between the two ends of the developing roll and the two side sealing strips, the developing box is capable of effectively stopping the side sealing strips to seal the developing roller from leaning or transforming under the action of the rotation of the developing roller, thus improving sealing performance, prolonging the service life of the side sealing strips and ensuring printing quality.

Description

Delevoping cartridge

Technical field

The utility model relates to a kind of Delevoping cartridge that is applied in the laser class image forming apparatus.

Background technology

In laser class image forming apparatus, for example laser printer, laser copier or facsimile recorder etc. all are provided with the Delevoping cartridge that the electrostatic latent image that is formed on the photosensitive drums is developed.Delevoping cartridge generally comprises the toner of holding carbon dust, and its inside is provided with the stirring apparatus that stirs carbon dust.Peristome in toner is provided with developer roll and powder feeding roller, and powder feeding roller can flow to developer roll with the carbon dust in the toner, and the developer roll surface can adhere to carbon dust, and carbon dust transferred on the formed electrostatic latent image of photosensitive drum surface forms image.Above peristome, also be provided with the powder delivery cutter against the developer roll surface, be used for the carbon dust of developer roll surface adhesion is formed homogeneous thickness.At the gap location of peristome and developer roll, also be provided with sealing mechanism, the carbon dust that its tolerable is not passed to photosensitive drum surface turns back to toner through peristome, also can prevent that carbon dust from leaking from the gap location of peristome and developer roll.

CN 1658085A Chinese invention patent ublic specification of application discloses a kind of developing apparatus with said structure, and wherein sealing mechanism comprises side seal and preceding sealing.Side seal is adhered to the length direction both sides of the peristome of carbon dust container, the both ends Elastic Contact of itself and developer roll, thus prevent that carbon dust from leaking from the both ends and the slit between the peristome of developer roll.Before sealing rectangular basically, be configured in the peristome below of carbon dust container along the length direction of developer roll, its both ends overlap on respectively in the side seal of peristome both sides.The long limit that keeps away oral area one side of preceding sealing is fixed on the carbon dust container framework of peristome below, long limit near peristome one side is free side, contact with the circumferential surface of developer roll, in case the blocking powder leaks from the slit that forms between developer roll and the peristome below.

In the course of work of above-mentioned developing apparatus, the rotation contact of developer roll surface is also exerted pressure to side seal, for guaranteeing the good seal at developer roll two ends, the pressure that developer roll imposes on side seal is necessary enough big, but in this case, side seal is run-off the straight easily under bigger developer roll rotational pressure effect, thereby influences sealing effectiveness, causes print quality to descend.

Summary of the invention

The purpose of this utility model is to provide a kind of Delevoping cartridge that can improve the sealed at both ends performance of developer roll.

For achieving the above object, the utility model provides a kind of Delevoping cartridge, comprising: hold the powder storehouse of carbon dust, this powder storehouse is provided with peristome along its length direction; Developer roll, it is supported at both ends in described peristome both sides; The side seal sheet is arranged on described peristome both sides, with the both ends sliding contact of described developer roll; Preceding diaphragm seal comprises two ends on integrated adhesive portion, hermetic unit and the length direction, and described adhesive portion sticks to the lower limb of described peristome; Wherein, two ends of described preceding diaphragm seal cover and are pasted on the described side seal sheet, and cramping is between described developer roll both ends and side seal sheet.

Further, the place, boundary that connects of two ends of diaphragm seal and described hermetic unit respectively has a kerf before described, two ends of diaphragm seal and hermetic unit keep relatively independent before can making like this, when not being in the same plane with convenient hermetic unit and preceding diaphragm seal end, avoid the volume of freely turning on one's side of hermetic unit, can improve the validity of sealing.Be provided with under the situation of otch, leaking from incision, can between otch and peristome lower limb, the leakproof sponge be set in order to prevent carbon dust.

The utility model Delevoping cartridge is owing to cover two ends of preceding diaphragm seal and be pasted on the side seal sheet, and cramping is between developer roll both ends and side seal sheet, therefore can prevent effectively that the side seal sheet that seals the developer roll both ends from angular displacements and torsional deformation taking place under the rotational pressure effect of developer roll, improved the sealing property of side seal sheet, prolong the serviceable life of side seal sheet, guaranteed the quality of printing.

Description of drawings

Fig. 1 is the structural representation of a kind of preferred implementation of the utility model Delevoping cartridge;

Fig. 2 is the structural representation of Delevoping cartridge shown in Figure 1 when not showing developer roll;

Fig. 3 is the structural representation of Delevoping cartridge shown in Figure 1 when not showing developer roll and preceding diaphragm seal;

Fig. 4 is the structural representation of the preceding diaphragm seal in the Delevoping cartridge shown in Figure 1.

Below in conjunction with the drawings and specific embodiments the utility model is done to describe in further detail.

Embodiment

Referring to Fig. 1 and Fig. 2, Delevoping cartridge of the present utility model comprises a Delevoping cartridge framework 1, has the powder storehouse that holds carbon dust in the Delevoping cartridge framework 1, is provided with the stirring apparatus that stirs carbon dust in the powder storehouse.This powder storehouse is provided with peristome 2 in a side of photosensitive drums in imaging device along Delevoping cartridge framework 1 length direction, and it allows carbon dust inner outflow from the powder storehouse.At peristome 2, along the length direction of Delevoping cartridge framework 1 is rotatably mounted developer roll 3 and powder feeding roller 4 arranged, wherein, developer roll 3 is used for carbon dust is transferred to the circumferential surface of photosensitive drums in the face of photosensitive drums, thus the latent electrostatic image developing that photosensitive drum surface is formed; Powder feeding roller 4 is positioned at the inboard of developer roll 3, can be made of cylindric bipeltate resilient material, is used for the carbon dust in the powder storehouse is flowed to developer roll 3.Above developer roll 3, be provided with powder delivery cutter 5 abreast with developer roll 3, its can with the circumferential surface Elastic Contact of developer roll 3, to adjust the thickness of developer roll 3 surface carbon bisques.

The both ends 31,32 of developer roll 3 are bearing on the both sides 21,22 of peristome 2, and both sides 21,22 are respectively according to the shape at developer roll 3 both ends 31,32 and bending.Both sides 21,22 in bending are stained with side seal sheet 6 respectively, and the side seal sheet is distributed with resilient seal sponge 76 times, and it can be developed both ends 31,32 compressions of roller 3. Side seal sheet 6 and 31,32 sliding contacts of developer roll both ends, the slit that forms between sealing developer roll both ends 31,32 and the peristome both sides 21,22.

Between the lower limb 23 and developer roll 3 of peristome 2, diaphragm seal 8 before being provided with along the length direction of peristome 2.Referring to Fig. 4, preceding diaphragm seal 8 comprises two ends 83,84 of integrated adhesive portion 81, hermetic unit 82 and length direction, and adhesive portion 81 and hermetic unit 82 all extend on the length direction of peristome 2.Adhesive portion 81 is positioned at the side away from powder feeding roller 4, and its lower surface integral body sticks to the lower limb 23 of peristome 2, promptly on the Delevoping cartridge framework of peristome 2 belows.Hermetic unit 82 is positioned near powder feeding roller 4 one sides, it links to each other with adhesive portion 81 one, fixation side 821 and the free side 822 that is contacted with developer roll 3 with adhesive portion of being connected in 81, this free side 822 is positioned near peristome 2 one sides, it contacts with the circumferential surface of developer roll 3, can prevent that carbon dust from leaking from the slit that forms between developer roll 3 and the peristome lower limb 23.Two ends of diaphragm seal 83,84 link to each other with adhesive portion 81 one before described, and they cover and are pasted on the side seal sheet 6 at developer roll 3 two ends.After developer roll 3 was mounted, 8 two ends of preceding diaphragm seal 83,84 can be directly and both ends 31,32 sliding contacts of developer roll 3.Because of the side seal sheet is distributed with resilient seal sponge 76 times, so the elastic force pressure that both ends 31, the 32 offside diaphragm seals 6 of developer roll 3 are produced can make preceding two ends of diaphragm seal 83,84 be developed roller both ends 31,32 and the 6 tight clampings of side seal sheet.The both ends 31,32 of developer roll 3 and the surface in contact at preceding diaphragm seal both ends 83,84 are smooth, can prevent effectively that therefore carbon dust is from leaking between developer roll both ends 31,32 and the peristome both sides 21,22.

Referring to Fig. 4, also be respectively equipped with otch 85,86 at the hermetic unit 82 of preceding diaphragm seal 8 and the place, boundary that connects at both ends 83,84, diaphragm seal both ends 83,84 and hermetic unit 82 keep relatively independent before can making like this, when not being in the same plane with preceding diaphragm seal both ends 83,84 with convenient hermetic unit 82, avoid free side 822 turnups of hermetic unit 82, can improve the validity of sealing.Referring to Fig. 3, under the situation that is provided with otch 85,86, leak from otch 85,86 in order to prevent carbon dust, can between otch 85,86 and peristome lower limb 23, leakproof sponge 9 be set.

Above-described only is preferred implementation of the present utility model; should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the present utility model design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.

Claims (4)

1, Delevoping cartridge comprises

The powder storehouse that holds carbon dust, this powder storehouse is provided with peristome along its length direction;

Developer roll, it is supported at both ends in described peristome both sides;

The side seal sheet is arranged on described peristome both sides, with the both ends sliding contact of described developer roll;

Preceding diaphragm seal comprises two ends on integrated adhesive portion, hermetic unit and the length direction, and described adhesive portion sticks to the lower limb of described peristome;

It is characterized in that:

Two ends of diaphragm seal cover and are pasted on the described side seal sheet before described, and cramping is between described developer roll both ends and side seal sheet.

2, according to the described Delevoping cartridge of claim 1, it is characterized in that:

The place, boundary that connects of two ends of diaphragm seal and described hermetic unit respectively has a kerf before described.

3, according to the described Delevoping cartridge of claim 2, it is characterized in that:

Be provided with anti-leak seal between the lower limb of described otch and described peristome.

4, according to the described Delevoping cartridge of claim 3, it is characterized in that:

Described anti-leak seal is a sponge.

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