CN2932441Y - Developing device - Google Patents
Developing device Download PDFInfo
- Publication number
- CN2932441Y CN2932441Y CN 200620062875 CN200620062875U CN2932441Y CN 2932441 Y CN2932441 Y CN 2932441Y CN 200620062875 CN200620062875 CN 200620062875 CN 200620062875 U CN200620062875 U CN 200620062875U CN 2932441 Y CN2932441 Y CN 2932441Y
- Authority
- CN
- China
- Prior art keywords
- developer
- peristome
- length
- developer roll
- developing apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Dry Development In Electrophotography (AREA)
Abstract
A developing apparatus which comprises a developer reservoir containing developer whose direction of length is provided with an opening portion, a developer roll fixed on the opening portion along the direction of length of the developer reservoir, a side seal provided with double-side portions of the opening portion and a front seal provided below the opening portion. The front seal comprises a stickup portion sticking below the opening portion along the direction of length of the developer reservoir and a low edge sealing portion extending along the direction of length of the developer reservoir contacted with the developer roll at the free end, wherein the front seal also comprises an end extending portion located at both edges of the front seal extending from the sticking portion to the opening portion and covering the side seal. The utility model has the advantages of good sealing property or the like.
Description
Technical field
The utility model relates to a kind of developing apparatus that is used for electronic imaging device.
Background technology
In the electronic imaging device such as electrophotographic copier, electrophotographic printer, all dismountable developing apparatus that inner receiving photographic developer is installed.Developing apparatus generally comprises the developer reservoir of receiving photographic developer, and inside is provided with the stirring apparatus that stirs developer.Peristome at developer reservoir is provided with developer roll and powder feeding roller, powder feeding roller can flow to developer roll with the developer in the developer reservoir, the developer roll surface can adhere to developer, and developer is transferred on the formed electrostatic latent image of photosensitive drum surface, forms image.Above peristome, also be provided with developing blade against the developer roll surface, be used for the developer 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 developer that its tolerable is not passed to photosensitive drum surface turns back to developer reservoir through peristome, also can prevent that developer from leaking from the gap location of peristome and developer roll.
CN1658085A number a kind of developing apparatus with said structure of Chinese disclosure of the Invention patent disclosure, wherein sealing mechanism comprises side seal and preceding sealing.Side seal is adhered to the length direction both sides of the peristome of developer reservoir, two length end Elastic Contact of itself and developer roll, thus prevent that developer from leaking from the two length ends and the slit between the peristome of developer roll.Before sealing rectangular basically, be configured in the peristome below of developer reservoir along the length direction of developer roll, its two length end overlaps 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 developer reservoir framework of peristome below, long limit near peristome one side is a free end, contact with the circumferential surface of developer roll, leak from the slit that forms between developer roll and the peristome below to prevent developer.
Developing apparatus with above-mentioned sealing mechanism, because of two length end parts of preceding sealing overlap in the side seal, thereby be formed with step at this overlapping place, so when two length ends of developer roll contact with side seal and preceding sealing, the slit of seal thickness size before this step place forms and is equivalent to easily causes developer to leak from this small gap.
The utility model content
The utility model purpose provides a kind of developing apparatus with the sealing mechanism that improves sealing.
For achieving the above object, the utility model provides following technical scheme: developing apparatus comprises: the developer reservoir of receiving photographic developer is provided with peristome along its length direction; Developer roll is installed in peristome along the length direction of developer reservoir; Side seal is arranged on the both sides of peristome; The preceding sealing is located at the below of peristome, comprising: an adhesive portion sticks to the peristome below along the developer reservoir length direction; One low edge hermetic unit extends along the developer reservoir length direction, and contacts with developer roll at free end; Wherein, preceding sealing also comprises: extension, an end, be positioned at the both sides of low edge hermetic unit, and extend to the peristome direction from adhesive portion, and cover side seal.
Scheme is that the extension, end of preceding sealing covers side seal fully preferably.
Better scheme is that low edge hermetic unit and end extension tap circle place are provided with otch.
Developing apparatus with said structure, extension, end covering side seal because of preceding sealing, eliminated the step that partly overlaps and produce because of preceding hermetic terminal and side seal, can smooth tight the contact between the two length ends that make developer roll and the extension, end, can not form small gap, thereby avoid the two length ends leakage of developer from developer roll.In addition, the low otch that connects between edge hermetic unit and the extension, end can make the two maintenance relatively independent, thereby when low edge hermetic unit and extension, end are not in the same plane, can avoid the free end turnup of low edge hermetic unit.
Description of drawings
Fig. 1 is the stereographic map of the utility model developing apparatus;
Fig. 2 is that the utility model developing apparatus is not installed the stereographic map under the developer roll state;
Fig. 3 is the structural representation of sealing before the utility model developing apparatus.
Describe the utility model developing apparatus in detail below in conjunction with drawings and the specific embodiments.
Embodiment
In conjunction with reference to Fig. 1, Fig. 2 and Fig. 3, developing apparatus A comprises a developer reservoir 1, and the non-magnetic mono-component developer only is equipped with in its inside, and is provided with the stirring apparatus (not shown).Side in developer reservoir 1 photosensitive drums in the imaging device is provided with peristome 11 along developer reservoir 1 length direction, and it allows developer to flow out from the inside of developer reservoir 1.
At peristome 11, developer roll 2 and powder feeding roller 3 arranged along the length direction of developer reservoir 1 is rotatably mounted.Wherein developer roll 2 is used for developer is transferred to the circumferential surface of photosensitive drums in the face of the photosensitive drums setting of imaging device side, thus the latent electrostatic image developing that photosensitive drum surface is formed.Powder feeding roller 3 is positioned at the inboard of developer roll 2, can be made of cylindric bipeltate resilient material, is used for the developer in the developer reservoir 1 is flowed to developer roll 2.On the top of developer roll 2, with the developer roll 2 parallel developing blades 4 that are provided with, its can with the circumferential surface Elastic Contact of developer roll 2, to adjust the thickness of developer roll 2 surface development agent layers.
The both sides 111 of the peristome 11 of supporting developer roll 2 liang of length ends 21 are respectively along the shape of two length ends 21 of developer roll 2 and bending.Be stained with side seal 5 respectively in these crooked both sides 111, be used to seal the slit that forms between the both sides 111 of two length ends 21 of developer roll 2 and peristome 11.Side seal preferably 5 is to be made by elastic sponge, and it can be developed two length ends, 21 compressions of roller 2.
Below the peristome 11 and between the developer roll 2, sealing 6 before disposing along the length direction of developer reservoir 1.Preceding sealing 6 one comprise adhesive portion 61, low edge hermetic unit 62 and extension, end 63.Adhesive portion 61 is positioned at a side that keeps away oral area 11, and its length direction along developer reservoir 1 sticks on the developer reservoir framework of peristome 11 belows.Low edge hermetic unit 62 is positioned near peristome 11 1 sides, and links to each other with adhesive portion 61 one, and its length direction along developer reservoir 1 extends, and length is less than adhesive portion 61.Be formed with free end at low edge hermetic unit 62 near peristome 11 1 sides, this free end contacts with the circumferential surface of developer roll 2, can prevent that developer from leaking from the slit that forms between developer roll 2 and peristome 11 belows.Extension, end 63 is positioned at low edge hermetic unit 62 both sides, links to each other with the both ends one of sticking part, and extends to peristome 11 directions from the end of adhesive portion 61, covers side seal 5 fully.After developer roll 2 was installed, extension, end 63 can be directly and two length ends, 21 sliding contacts of developer roll 2.Because of side seal 5 has certain elasticity, so the elastic force pressure that 21 pairs of side seals 5 of the length end of developer roll 2 are produced can make extension, end 63 be developed the length end 21 and side seal 5 tight clampings of roller 2.
Because of the surface in contact of the length end 21 of developer roll 2 and extension, end 63 is smooth, can prevent effectively that therefore developer is from leakage between the both sides 111 of two length ends 21 of developer roll 2 and peristome 11.
Preferably be provided with otch 64 in the low junction that connects edge hermetic unit 62 and extension, end 63, can make the two maintenance relatively independent like this, when not being in the same plane with extension, end 63 with convenient low edge hermetic unit 62, avoid the free end turnup of low edge hermetic unit 62, can improve the validity of sealing.
Claims (5)
1, developing apparatus comprises:
The developer reservoir of receiving photographic developer is provided with peristome along its length direction;
Developer roll is installed in described peristome along the length direction of described developer reservoir;
Side seal is arranged on the both sides of described peristome;
The preceding sealing is located at the below of described peristome, comprising: an adhesive portion sticks to described peristome below along described developer reservoir length direction; One low edge hermetic unit extends along described developer reservoir length direction, and contacts with described developer roll at free end;
It is characterized in that:
Sealing also comprises before described: extension, an end, be positioned at described low edge hermetic unit both sides, and extend to described peristome direction from described adhesive portion, and cover described side seal.
2, according to the described developing apparatus of claim 1, it is characterized in that:
Extension, described end covers described side seal fully.
3, according to claim 1 or 2 described developing apparatuss, it is characterized in that:
Described low edge hermetic unit and described end extension tap circle place are provided with otch.
4, according to the described developing apparatus of claim 3, it is characterized in that:
The length end sliding contact of extension, described end and described developer roll.
5, according to the described developing apparatus of claim 3, it is characterized in that:
The length of described low edge hermetic unit is less than described adhesive portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620062875 CN2932441Y (en) | 2006-08-09 | 2006-08-09 | Developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620062875 CN2932441Y (en) | 2006-08-09 | 2006-08-09 | Developing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2932441Y true CN2932441Y (en) | 2007-08-08 |
Family
ID=38348937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620062875 Expired - Lifetime CN2932441Y (en) | 2006-08-09 | 2006-08-09 | Developing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2932441Y (en) |
-
2006
- 2006-08-09 CN CN 200620062875 patent/CN2932441Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070808 |
|
| EXPY | Termination of patent right or utility model |