JPS6348738U

JPS6348738U -

Info

Publication number: JPS6348738U
Application number: JP14140286U
Authority: JP
Priority date: 1986-09-17
Filing date: 1986-09-17
Publication date: 1988-04-02

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示す側面図、第２図
はそのレベル検知手段を拡大して示す側面図、第
３図ａ，ｂ，ｃは夫々上下２つのレベルの検知状
態の種々の態様を示す側面図、第４図は本考案が
適用される公知のシート供給装置の一例を示す側
面図である。１，１′……レベル検知手段（光電センサ）、
２……アクチユエータ、２ａ，２ｂ……その遮蔽
部、３，４……分離給紙手段、５，６……ガイド
板、７……呼出しコロ、８……シート束、９……
トレイ、１１……コロホルダーアーム、１２……
ワイヤロープ、１３……モータ、１４……スプリ
ング。 Fig. 1 is a side view showing an embodiment of the present invention, Fig. 2 is an enlarged side view showing the level detection means, and Figs. 3 a, b, and c show various detection states of the two upper and lower levels. FIG. 4 is a side view showing an example of a known sheet feeding device to which the present invention is applied. 1, 1'...Level detection means (photoelectric sensor),
2... Actuator, 2a, 2b... Its shielding portion, 3, 4... Separation sheet feeding means, 5, 6... Guide plate, 7... Calling roller, 8... Sheet bundle, 9...
Tray, 11... Coro holder arm, 12...
Wire rope, 13...motor, 14...spring.

Claims

[Claims for Utility Model Registration] (1) A tray for stacking a bundle of sheets, a drive motor for raising and lowering the tray, and a level detection means for detecting the position of the top surface of the bundle of sheets stacked on the tray; In a sheet feeding device having a separating paper feeding means for separating and feeding the uppermost sheet of a sheet bundle one by one, the level detecting means has means for respectively detecting two upper and lower levels that are close to each other, A sheet feeding device comprising means for controlling the drive motor based on an upper level detection signal and a lower level detection signal detected by each of the detection means. (2) Registration of a utility model characterized in that the means for controlling the drive motor turns off the motor in response to a lower level detection signal, and drives the motor in the opposite direction for a very short period of time in response to an upper level detection signal. A sheet feeding device according to claim 1. (3) The sheet according to claim 1 of the utility model registration claim, wherein the means for controlling the drive motor applies an appropriate duty to the motor using a lower level detection signal to drive the motor in the opposite direction. Feeding device. (4) The means for controlling the drive motor described above applies an appropriate duty to the motor according to the detection signal of the lower level while continuously feeding the sheets of the sheet bundle to drive the motor in the forward direction. A sheet feeding device according to claim 1 of the utility model registration claim, characterized in that: (5) The width for activating the sensor of the actuator, which is moved by the top surface of the sheet bundle loaded on the tray, for activating the sensor for detecting the two levels above and below, is greater than the maximum overrun amount. A sheet feeding device according to claim 1 of the utility model registration claim.