JPH0228840U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は給紙装置の形態を示す斜視図、第２図
は画像形成装置の一例の静電写真複写機の概略縦
断側面図、第３図は別実施例の給紙装置の形態を
示す斜視図である。 ２６，２９……往復移動部材（支軸、保持部材
）、２７……ワンウエイクラツチ、２８……給紙
部材、３７……形状記憶部材、３９……制御手段
、Ｂ（３１，３４，３７，ｅ）……往復移動機構
（付勢手段、増速機、形状記憶部材、ワイヤー。
） FIG. 1 is a perspective view showing the form of a paper feeding device, FIG. 2 is a schematic longitudinal sectional side view of an electrostatographic copying machine as an example of an image forming apparatus, and FIG. 3 shows the form of a paper feeding device of another embodiment. FIG. 26, 29... Reciprocating member (support shaft, holding member), 27... One-way clutch, 28... Paper feeding member, 37... Shape memory member, 39... Control means, B (31, 34, 37, e)... Reciprocating mechanism (biasing means, speed increaser, shape memory member, wire.
)

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 給紙方向ならびに反給紙方向に往復移動自在な
往復移動部材に、給紙方向への回転を不能にし反
給紙方向への回転を許容するワンウエイクラツチ
を介して給紙部材を設ける一方、電流印加量の変
更に応じて伸び量が変化する形状記憶部材の伸縮
運動を前記往復移動部材の往復運動に変換して伝
達する往復移動機構を設け、かつ、前記形状記憶
部材に対する電流の印加量を制御するための制御
手段を設けて成ることを特徴とする画像形成装置
の給紙装置。 A reciprocating member that can freely move back and forth in the paper feeding direction and the anti-paper feeding direction is provided with a paper feeding member via a one-way clutch that disables rotation in the paper feeding direction and allows rotation in the anti-paper feeding direction. A reciprocating mechanism is provided that converts the expansion/contraction movement of the shape memory member whose elongation amount changes in response to a change in the amount of electric current into a reciprocating movement of the reciprocating member and transmits the same, and the amount of electric current applied to the shape memory member is changed. 1. A paper feeding device for an image forming apparatus, comprising a control means for controlling the paper.