JPH0169250U

JPH0169250U -

Info

Publication number: JPH0169250U
Application number: JP1987164612U
Authority: JP
Priority date: 1987-10-29
Filing date: 1987-10-29
Publication date: 1989-05-08
Anticipated expiration: 2002-10-29
Also published as: JPH0617123Y2

Description

[Brief explanation of the drawing]

第１図〜第４図は本考案の実施例を示しており
、第１図は実施例に係る現像装置の断面図、第２
図はその部分斜視図、第３図及び第４図は第２図
の部分平面図及び部分斜視図、第５図は他の実施
例に係る案内片の平面図を夫々示しており、また
、第６図〜第１１図は従来の現像装置を示してお
り、第６図はトナーデイスペンスローラを使用す
る現像装置の断面図、第７図〜第１１図はトナー
補給部材を使用する現像装置に係り、第７図はそ
の断面図、第８図はその部分斜視図、第９図は案
内片の平面図、第１０図は第８図の平面図、第１
１図機は第９図の斜視図、第１２図は現像剤供給
量の分布図を夫々示す。符号説明、１……感光ドラム、４……現像ロー
ラ、６……トリマープレート、７……現像剤搬送
プレート、８……搬送パイプ、９……トナー搬送
用オーガ、１０……トナー補給部材、１１……案
内片、１２……開口、１３……トナー供給口、１
４……スリツト部。 1 to 4 show an embodiment of the present invention, in which FIG. 1 is a sectional view of a developing device according to the embodiment, and FIG.
The figure shows a partial perspective view, FIGS. 3 and 4 show a partial plan view and a partial perspective view of FIG. 2, and FIG. 5 shows a plan view of a guide piece according to another embodiment, respectively. 6 to 11 show conventional developing devices, FIG. 6 is a sectional view of the developing device using a toner dispensing roller, and FIG. 7 to 11 are developing devices using a toner replenishing member. 7 is a sectional view thereof, FIG. 8 is a partial perspective view thereof, FIG. 9 is a plan view of the guide piece, FIG. 10 is a plan view of FIG.
Figure 1 shows a perspective view of the machine shown in Figure 9, and Figure 12 shows a distribution diagram of the amount of developer supplied. Description of symbols, 1... Photosensitive drum, 4... Developing roller, 6... Trimmer plate, 7... Developer conveyance plate, 8... Conveyance pipe, 9... Toner conveyance auger, 10... Toner supply member, 11... Guide piece, 12... Opening, 13... Toner supply port, 1
4...Slit part.

Claims

[Claims for Utility Model Registration] (1) A developing roller that is placed opposite to the latent image carrier and to which a developer composed of toner and carrier is supplied to the outer peripheral surface, and a developer that is provided on this developing roller and is supplied thereto. a developer regulating member for scraping off excess developer, a developer transport plate for transporting the scraped surplus developer to a part away from the developing roller, and a developer transport plate on the end side in the transport direction of the developer transport plate. A part of the excess developer is removed by a guide piece protruding from the end side of the developer conveying plate toward the toner replenishing member side in the conveying direction. is supplied to the toner replenishing member through an opening provided in the cylindrical body, the developer and toner are mixed, and this mixture is supplied into the apparatus from a toner supply port provided in the cylindrical body. In the developing device, the guide piece is provided with an opening for removing an excess amount of developer supplied from the developer transport plate, and a fixed amount of developer is supplied into the toner supply member. A developing device characterized by: (2) A request for registration of a utility model characterized in that the opening of the guide plate is composed of a plurality of slit groups opened at appropriate intervals along a direction perpendicular to the direction of protrusion of the guide plate. The developing device according to item 1.