JPH0218436U

JPH0218436U -

Info

Publication number: JPH0218436U
Application number: JP9779288U
Authority: JP
Priority date: 1988-07-23
Filing date: 1988-07-23
Publication date: 1990-02-07

Description

[Brief explanation of drawings]

第１図はカセツトケースタイプの給紙部の縦断
側面図、第２図は同じく正面図である。第３図は
搬送ローラ軸の分解斜視図、第４図及び第５図は
搬送ローラ軸の伸縮切り換えの説明図であり、第
６図は収縮保持手段の別実施例を示す部分断面図
である。第７図は従来例の搬送ローラ軸の着脱装
置を示す正面図である。４ｂ……軸受、５……駆動手段、６……搬送ロ
ーラ、７……搬送ローラ軸、８……第１ローラ軸
、９……第２ローラ軸、１０……軸支部材、１３
……付勢手段、１４……抜け出し阻止手段、１５
……収縮保持手段、ｇ……駆動伝達部。 FIG. 1 is a longitudinal sectional side view of a cassette case type paper feeding section, and FIG. 2 is a front view thereof. FIG. 3 is an exploded perspective view of the conveyance roller shaft, FIGS. 4 and 5 are illustrations of switching the expansion and contraction of the conveyance roller shaft, and FIG. 6 is a partial sectional view showing another embodiment of the contraction holding means. . FIG. 7 is a front view showing a conventional conveyance roller shaft attachment/detachment device. 4b... Bearing, 5... Drive means, 6... Conveyance roller, 7... Conveyance roller shaft, 8... First roller shaft, 9... Second roller shaft, 10... Shaft supporting member, 13
... Urging means, 14 ... Escape prevention means, 15
... Contraction holding means, g... Drive transmission section.

Claims

[Scope of utility model registration request]

The conveyance roller shaft is composed of two roller shafts, a first roller shaft and a second roller shaft, one of which is provided with a conveyance roller, and the shaft end of the second roller shaft is slidably supported on the shaft end of the first roller shaft. A shaft support member is provided, and a slip-off preventing means is provided to prevent the second roller shaft from coming off from the shaft support member, and the transport roller shaft is configured to be extendable and retractable, and the transport roller shaft is extendable. A biasing means for urging the conveying roller shaft is provided, and a contraction holding means is provided for holding the conveying roller shaft in a contracted state against the urging means, and further, one end side of the conveying roller shaft can be freely fitted into and removed from the bearing. What is claimed is: 1. An attachment/detachment device for a conveyance roller shaft in an image forming apparatus, characterized in that the conveyance roller shaft is configured to have a drive transmitting portion that can be freely fitted and detached from the drive means on the other end side of the conveyance roller shaft.