JPH0264533U

JPH0264533U -

Info

Publication number: JPH0264533U
Application number: JP14338188U
Authority: JP
Priority date: 1988-11-04
Filing date: 1988-11-04
Publication date: 1990-05-15

Description

[Brief explanation of the drawing]

第１図は第１考案の実施例の要部を示す側面図
、第２図はその後トレイ移動阻止手段の１例を示
す側面図、第３図は複写機の操作表示部の１例を
示す平面図、第４図及び第５図は第２考案の実施
例の要部を示す側面図、第６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７図はその閉鎖状態を示す側面図、第８図はこ
の形式の給紙トレイの底板に載置された用紙束の
用紙の厚さ及び枚数の底板巻取り力との関係を示
すグラフ、第９図は第１考案が適用可能な他の給
紙トレイの一例を示す側面図である。１……前トレイ、３……後トレイ、７……ワイ
ヤ、１０……底板、１３……張力検知センサ、１
４……ソレノイド、１５……ストツパ、１６……
警告ブザー、１７……表示手段、１９……感圧セ
ンサ、２０……スイツチ。 FIG. 1 is a side view showing the main parts of the embodiment of the first invention, FIG. 2 is a side view showing an example of the tray movement prevention means, and FIG. 3 is a side view showing an example of the operation display section of the copying machine. A plan view, FIGS. 4 and 5 are side views showing essential parts of an embodiment of the second invention, and FIG. 6 is a side view showing an open state of an example of a paper feed tray to which the present invention is applied.
FIG. 7 is a side view showing the closed state, and FIG. 8 is a graph showing the relationship between the thickness and number of sheets in the stack of sheets placed on the bottom plate of this type of paper feed tray and the bottom plate winding force. FIG. 9 is a side view showing an example of another paper feed tray to which the first invention is applicable. 1... Front tray, 3... Rear tray, 7... Wire, 10... Bottom plate, 13... Tension detection sensor, 1
4... Solenoid, 15... Stopper, 16...
Warning buzzer, 17...display means, 19...pressure sensor, 20...switch.

Claims

[Scope of Claim for Utility Model Registration] (1) Between the front tray fixed to the main body of the copying machine and the closed position where the front tray is slid in the paper feeding direction and overlapped with the front tray and the open position where it is pulled out. a displaceable rear tray, a bottom plate made of an elastic plate whose front end is fixed to the upper surface of the bottom plate of the front tray and whose rear end reaches near the rear end of the rear tray in the open position and forms a horizontal plane; an interlocking mechanism that extends the bottom plate in one horizontal plane in the open state in conjunction with the opening/closing movement, and folds the bottom plate into a U-shape in the closed state together with the stack of sheets placed thereon; In a paper feed tray of a copying machine that replenishes paper onto a plate and can feed paper in a closed state, a sensor is provided to detect the driving force required for folding the bottom plate of the interlocking mechanism, and the sensor detects a predetermined driving force. 1. A paper feed tray characterized by being provided with a means for prohibiting movement of the rear tray in a closing direction, or a means for giving a warning or display, which is activated when a driving force exceeding the force of the rear tray is detected. (2) A front tray fixed to the copying machine main body, and a closed position and a pulled-out position in which the front tray is overlapped by sliding in the paper feeding direction via sliding connecting guide members provided on both sides of the front tray. a rear tray movable to an open position; a bottom plate made of an elastic plate whose front end is fixed to the upper 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, and the other end is 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. In the closed state, the bottom plate is pulled by the wire and folded into a U shape with its rear part curved together with the stack of sheets placed on it, and the bottom plate bends in both the open and closed positions and in the process of movement between them. In the paper feed tray of a copying machine, where the rear plate of the rear tray is normally separated from the rear plate of the rear tray, 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. , a pressure sensor is installed on the front of the rear plate of the rear tray,
A paper feed tray, characterized in that it is provided with a means for prohibiting movement of the rear tray in the closing direction, or a means for giving a warning or display, which is activated when the sensor detects contact with the curved portion of the pressure plate.