JPH02142734U

JPH02142734U -

Info

Publication number: JPH02142734U
Application number: JP5020889U
Authority: JP
Priority date: 1989-05-01
Filing date: 1989-05-01
Publication date: 1990-12-04

Description

[Brief explanation of the drawing]

第１図は本考案に係る給紙装置の概略説明図、
第２図は、モーター駆動制御装置に含まれるモー
ター制御回路図、第３図は複写機の量の違いによ
り給紙位置のばらつきを示す図で、Ａは従来の装
置の例、Ｂは本考案の装置の例を示す図、第４図
は本考案に係る給紙装置の別の実施例の概略説明
図、第５図は上昇モーター制御フローチヤートで
ある。１……給紙カセツト、２……複写機、３……底
板、４……ピツクアツプコロ、５……給紙コロ、
７……ピツクアツプレバー、８……リバースコロ
、９……レバー、１８……センサー（第１センサ
ー、第２センサー）、２０……位置センサー。 FIG. 1 is a schematic explanatory diagram of a paper feeding device according to the present invention;
Figure 2 is a motor control circuit diagram included in the motor drive control device, and Figure 3 is a diagram showing variations in paper feeding position due to differences in the amount of copying machines.A is an example of the conventional device, and B is an example of the invention. FIG. 4 is a schematic explanatory diagram of another embodiment of the paper feeding device according to the present invention, and FIG. 5 is a flowchart for controlling the lift motor. 1... Paper feed cassette, 2... Copy machine, 3... Bottom plate, 4... Pick up roller, 5... Paper feed roller,
7... Pick up lever, 8... Reverse roller, 9... Lever, 18... Sensor (first sensor, second sensor), 20... Position sensor.

Claims

[Claims for Utility Model Registration] (1) A lever for pushing up the bottom plate when a paper feed cassette is mounted on which a copying machine is placed and has a bottom plate that can be tilted up and down, and a lifting motor for driving the lever;
a pick-up roller that contacts the copying machine in the paper feed cassette to feed the paper; a pick-up lever that rotatably supports the pick-up roller and is capable of vertically tilting; and a state in which the pick-up lever is not in the paper feed cassette. a first sensor that detects that the paper is in a first position held by the transfer paper on the bottom plate; a second sensor that detects that the paper is pushed up by the transfer paper on the bottom plate and is in a second position that is the paper feeding position; A paper feeding device having a paper feeding roller that rotates in the same direction in synchronization, and a reverse roller that is in pressure contact with the paper feeding roller and rotates in a direction that feeds the copying machine in the opposite direction to that of the paper feeding roller, A paper feeding device characterized in that when it is detected that the pick-up roller has come to a second position, a reverse driving force is applied to the lift motor in response to a signal from a motor drive control device to control the lift motor to stop suddenly. (2) a lever for pushing up the bottom plate when a paper feed cassette is mounted on which a copying machine is placed and has a bottom plate that can be tilted up and down, and a lifting motor for driving the lever;
a pick-up roller that contacts the copying machine in the paper feed cassette to feed the paper; a pick-up lever that rotatably supports the pick-up roller and is capable of vertically tilting; and a state in which the pick-up lever is not in the paper feed cassette. a first sensor that detects that the paper is in a first position held by the transfer paper on the bottom plate; a second sensor that detects that the paper is pushed up by the transfer paper on the bottom plate and is in a second position that is the paper feeding position; A paper feeding device having a paper feeding roller that rotates in the same direction in synchronization, and a reverse roller that is in pressure contact with the paper feeding roller and rotates in a direction that feeds the copying machine in the opposite direction to that of the paper feeding roller, A motor drive control device includes a third sensor for detecting the position of the bottom plate, and controls the lifting motor in response to a detection signal from the third sensor when it is detected that the pick up roller has reached a second position. A paper feeding device characterized in that the transmission time of a stop signal is controlled.