KR890004939Y1 - Insertion apparatus for electrographic process - Google Patents

Abstract

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Description

Copy paper feeder

1 is an explanatory diagram of a conventional device operation.

2 is a circuit diagram according to the present invention.

3 is a waveform diagram of each part of FIG.

4 is a state of the paper drag roller and copy paper when the motor rotates in the reverse direction in FIG.

* Explanation of symbols for main parts of the drawings

1: Oscillator 2: Divider

3: differential circuit part 4: half-wave rectifier part

5: flip-flop 6: comparator

7: drive switch part R ₁ , R _L : resistance

M: Motor AND ₁ : Endgate

The present invention relates to a copy paper insertion apparatus, and more particularly, to a copy paper insertion apparatus that prevents a plurality of copy papers from being drawn into a paper drag roller of a copying machine.

In the case of a copy paper insertion apparatus of a conventional copier, as shown in FIG. 1 of the explanatory drawing of the conventional apparatus operation, a paper-taking roller (c) at the end of the copy paper (a) in the copy paper cassette (b) when the copier is driven When the copy paper (a) is placed in the copy paper cassette (b), the copy paper is not properly cared for or the copy paper is removed due to the aging of the copying machine. There was a drawback to jamming (c) to get into the c) or to strain the copier.

In view of the above drawbacks of the present invention, the copying roller roller is temporarily reversed at the beginning of the copying operation and then forwardly rotated to separate the rear copying paper from the top copying paper in the cassette so that only one copy can be inserted at a time. When described in detail by the accompanying drawings to be drawn out as follows.

2 is a circuit diagram according to the present invention, as shown in the copy preparation switch SW ₁ , the copy number input switch SW ₂ , and the copy drive switch 7 of the copy start switch SW ₃ . The output side is connected to the enable terminal EN of the oscillation unit 1 via an AND gate AND ₁ , and the output side of the oscillation unit 1 is connected to the clock terminal CK of the flip-flop 5. It is connected to the input terminal Q of the flip-flop 5 through the period 2, the differential circuit part 3, and the half wave rectifier 4, and the output terminal Q of the flip-flop 5 is a non-inverting input terminal. (+) Is connected to the inverting input terminal (-) of the comparator 6 connected with the reference voltage terminal Vref, and its output side is connected to the motor M. In the above, each of the plurality of drive switch units 7 switches (SW ₁ -SW ₃₎ is the copying paper of the copying machine is prepared, and a plurality of input numbers to be copied is completed, when the copy start switch on each one doedo When the high potential is applied to the enable terminal EN, the oscillation unit 1 outputs a constant pulse signal having a period sufficiently shorter than the time required for one copy of the copying machine. , -V is the power supply terminal, and R _{1 and} R ₂ are the resistors. Referring to the operation and effects of the present invention configured in this way as follows.

When the driving condition of the copier, that is, preparation of copy paper is completed, input of the copy number is completed, and the output signals of the copy drive switch unit 7 are all high potential and applied to the dand gate AND ₁ by turning on the start switch, Since the high potential is output from the AND gate AND ₁ and applied to the enable terminal EN of the oscillation unit 1, the oscillation unit 1 generates a pulse signal of a predetermined period as described above to generate the flip-flop 5. It is applied to the input side of the clock terminal CK and the divider 2 (Fig. 3 (a)). At this time, the divider 2 divides the input pulse signal into a pulse signal having a time required for one copy and applies it to the differential circuit section 3 [Fig. 3 (b)]. The pulse signal period of the oscillator 1 is set to 0.1 second, and the output signal period of the divider 2 is set to 10 seconds. In this way, the signal output from the divider 2 is differentiated through the differential circuit section 3, [3 (c)], rectified through the half-wave rectifying section 4 [3 (d)] It is input to the input terminal D of the flop 5. Accordingly, in the flip-flop 5, its input signal (Fig. 3 (d)) is triggered at the rising point of its clock signal (Fig. 3 (a)), and the output signal Q of the flip-flop 5 is outputted from the output terminal Q. As shown in FIG. 3 (e), the high potential is output for one cycle of the clock signal of the oscillator 1 (T _A : 0.1 seconds in this example, in this case, 0.1 second), and the time required for one remaining copy (T _B : According to an example of the present invention, the 10 second-T _A ) outputs a low potential signal and is applied to the inverting input terminal (-) of the comparator 6, as shown in FIG. 3 (f) from the output side thereof. The copier driving initial constant time (0.1 sec) negative potential (-V) is applied to the motor M, and the next constant time (about 10 sec) electrostatic potential (+ V) is applied to the motor M. In this way, the motor M is initially rotated in reverse direction, and as shown in FIG. 2, the roller c interlocked with the motor M rotates in the opposite direction to the copy paper insertion direction, thereby causing the copy paper a to rotate. In this case, the separation action of the copy paper (a) is caused by this rolling action, and then the [fourth degree bar (T _B )] is moved to the motor (M) while the potential (+ V) is applied to the motor (M). Is rotated in the forward direction, the roller (c) is rotated in the forward direction with respect to the copy paper insertion direction to copy only one sheet of top copy paper separated.

In this manner, two or more copies are made by copying only one copy after each copy paper separation operation as in the above procedure.

As described above, the present invention has the effect of allowing the sheet to be inserted one at a time without overlapping the copy paper by temporarily rotating the motor in the initial stage of the copier and then rotating it forward again.

Claims (1)

The output side of the copy drive switch unit 7 is connected to the enable terminal EN of the oscillation unit 1 via an AND gate AND ₁ , and the output side thereof is connected to the clock terminal CK of the flip-flop 5. And an input terminal D of the flip-flop 5 through a divider 2, a differential circuit section 3 and a half wave rectifier 4, the output side of which is a comparator with a motor M connected to the output side. A copy paper drawing device, comprising: connecting to an inverting input terminal of (6);