JPH0269628U

JPH0269628U -

Info

Publication number: JPH0269628U
Application number: JP14807888U
Authority: JP
Priority date: 1988-11-15
Filing date: 1988-11-15
Publication date: 1990-05-28

Description

[Brief explanation of drawings]

第１図は本考案の実施例を示す側面図、第２図
はその作用を説明する説明図、第３図はその後ト
レイ移動阻止手段の１例を示す側面図、第４図は
その実施例の複写機の操作表示部の１例を示す平
面図、第５図は本考案が適用される給紙トレイの
１例の開放状態を示す側面図、第６図はその閉鎖
状態を示す側面図、第７図はこの形式の給紙トレ
イり底板に載置された用紙束の紙厚、サイズ及び
枚数による底板後端の高さの変化を示すグラフで
ある。１……前トレイ、３……後トレイ、７……ワイ
ヤ、１０……底板、１３……光源、１４……光電
センサ（検知手段）、１５……ストツパ（移動禁
止手段）、１６……警告ブザー、１７……表示手
段。 Fig. 1 is a side view showing an embodiment of the present invention, Fig. 2 is an explanatory view explaining its operation, Fig. 3 is a side view showing an example of the subsequent tray movement prevention means, and Fig. 4 is an embodiment thereof. FIG. 5 is a side view showing an example of a paper feed tray to which the present invention is applied in an open state, and FIG. 6 is a side view showing an example of a paper feed tray in a closed state. , FIG. 7 is a graph showing changes in the height of the rear end of the bottom plate depending on the thickness, size, and number of sheets of a stack of sheets placed on the bottom plate of this type of paper feed tray. 1... Front tray, 3... Rear tray, 7... Wire, 10... Bottom plate, 13... Light source, 14... Photoelectric sensor (detection means), 15... Stopper (movement inhibiting means), 16... Warning buzzer, 17...display means.

Claims

[Claims for Utility Model Registration] (1) A front tray fixed to the main body of a copying machine, and a sliding connecting guide member provided on both sides of the front tray for stacking sheets by sliding them in the paper feeding direction. a rear tray that is movable between a closed position and a pulled-out open position;
a bottom plate made of an elastic plate whose front end is fixed to the top surface of the bottom plate of the front tray and which reaches near the rear end of the rear tray in the open position and forms a horizontal plane; one end is connected to both sides of the rear end of the bottom plate; The wire has its other end fixed to a pulley that rotates in conjunction with the opening/closing movement of the rear tray via an intermediate pulley provided above the front end of the front tray. A copying machine in which the bottom plate is folded into a U-shape by curving the rear part together with a stack of paper placed on top of the bottom plate, and paper can be fed when the rear tray is in the closed position, and paper can be replenished when the rear tray is in the open position. In the paper feed tray of the above, during the process of moving the rear tray to the closed position, the movement path of the rear end of the bottom plate or the rear end of the paper stack is preset in order to prevent damage to the device and abnormal paper feeding. What is claimed is: 1. A paper feed tray comprising: a means for detecting that the height position has been exceeded; and a warning display means activated by a detection signal from the detecting means. (2) A paper feed tray characterized in that, in place of the warning display means according to claim 1, means is provided which is activated by a detection signal from the detection means and prohibits movement of the rear tray in the closing direction. (3) A paper feed tray characterized in that, in addition to the warning display means according to claim 1, means is provided which is activated by a detection signal from the detection means and prohibits movement of the rear tray in the closing direction.