JPH0253050U

JPH0253050U -

Info

Publication number: JPH0253050U
Application number: JP13155688U
Authority: JP
Priority date: 1988-10-07
Filing date: 1988-10-07
Publication date: 1990-04-17

Description

[Brief explanation of drawings]

第１図はこの考案による現像装置の断面図、第
２図は第１図の―矢視図、第３図はそれに使
用するスクレーパの斜視図、第４図はそのスクレ
ーパの使用状態説明図、第５図はこの考案による
現像装置を備えたレーザプリンタの概略構成図、
第６図は従来の現像装置の断面図、第７図は第６
図の―矢視図である。１３……感光体、１６……現像装置、２３……
現像室、２６……現像ローラ、２９……薄層化ロ
ーラ、３２……スクレーパ、３２ａ，３２ｂ……
両端部、３２ｃ，３２ｄ……先端、３２ｅ，３２
ｆ……エツジ、３４……トナー、３８……シール
部材、３９……スポンジシール、４０……植毛シ
ール、Ｓ……シール域。 FIG. 1 is a sectional view of the developing device according to this invention, FIG. 2 is a view taken along the - arrow in FIG. 1, FIG. 3 is a perspective view of a scraper used therein, and FIG. FIG. 5 is a schematic diagram of a laser printer equipped with a developing device according to this invention.
Figure 6 is a sectional view of a conventional developing device, and Figure 7 is a sectional view of a conventional developing device.
This is a view taken along the arrow in the figure. 13...Photoreceptor, 16...Developing device, 23...
Developing chamber, 26...Developing roller, 29...Thinning roller, 32...Scraper, 32a, 32b...
Both ends, 32c, 32d...Tip, 32e, 32
f... Edge, 34... Toner, 38... Seal member, 39... Sponge seal, 40... Flocked seal, S... Seal area.

Claims

[Claims for Utility Model Registration] 1. A developing roller that adheres toner to a photoconductor, a thinning roller that thins the toner layer on the surface of the developing roller, and a thinning roller that scrapes off the toner that adheres to the thinning roller. A developing device for an electrophotographic recording device, comprising a scraper, and a seal member that comes into contact with both axial ends of the developing roller and the layer thinning roller and both ends of the scraper to prevent toner from leaking from those parts. In the electrophotographic recording device, the sealing member includes a sponge seal that contacts the layer thinning roller and the scraper, and a flocked seal that contacts the layer thinning roller and the developing roller. developing device. 2. Electrophotographic recording comprising a developing roller that adheres toner to a photoreceptor, a thinning roller that thins the toner layer on the surface of the developing roller, and a scraper that scrapes off the toner that adheres to the thinning roller. In the developing device of the apparatus, both ends of the scraper are lengthened, and the tips of both ends are curved toward the thinning roller, and the edges of the tips are aligned with the surface curvature of the thinning roller. A developing device for an electrophotographic recording device is formed in a concave rounded shape in contact with the layer thinning roller.