KR19980027941A - Multi-Purpose Feeder for Copiers - Google Patents

Abstract

The present invention relates to a multi-purpose feeder for a copier, comprising: a pair of upper and lower housings installed in a spaced apart state in order to guide paper to a drum side, and a pair of upper and lower housings installed in close contact with both sides of the upper and lower housings. A paper feed device for a copier comprising a first and second rollers, the first and second optical sensors installed at a portion spaced to one side from the first and second rollers of the upper and lower housings, and rotatable on one side of the lower housing. A chute hinged so as to be spaced apart from the bottom of the chute, and a link provided in an inclined state, and coupled to an upper portion of the link. A fixed first rod and a first solenoid coupled with the other end of the first rod It prevents the front edge from being wound inside due to excessive deflection due to its own weight, regardless of the thickness of the paper during copying. It is to improve the performance and reliability of the product from the user by providing a smooth paper supply by preventing the folding or twisting of the paper during the process of moving to the drum side by maintaining the.

Description

Multi-Purpose Feeder for Copiers

The present invention relates to a multi-purpose feeder for a copier, and more particularly, by installing a chute that rotates at a predetermined angle according to the action of the solenoid at a predetermined portion of the lower housing. The present invention relates to a multi-purpose paper feeder for copiers that can be precisely matched to facilitate easy paper feeding.

Generally, the copier has a document table 12 on which an original is placed, and a bottom surface spaced apart from the document table 12 by a predetermined distance, as shown in FIG. 1. Opposite reflecting material 14 is inclined at a predetermined angle, and the light reflecting plate 18 is provided on one side of the opposing reflecting material 14 so as to open the light source lamp 16 in one direction.

In addition, the first to fifth mirrors 22, 24, 26, 28, and 30 are disposed under the light reflecting plate 18 so as to sequentially reflect the light source 20. The lens 32 is provided between the three mirrors 24 and 26, and the drum 38 provided with a pair of developing part 34 and the fixing part 36 in the part which opposes this 5th mirror 30 is provided. ) Is installed.

In addition, a plurality of paper cassettes 40 are inserted and installed in the lower part of the copier 10 spaced apart from the drum 38 so as to be classified and stored according to the size of the copy paper, and one side of the paper cassette 40 is inserted therein. A plurality of pairs of rotary rollers 44 are installed and fixed in order to move the paper 42 to the drum 38 side.

2 is an enlarged view of a portion A of FIG. 1 showing the paper feeder 46. The paper feeder 46 firstly accurately guides the paper 42 to the drum 38 side. In order to be spaced apart from each other, the upper and lower housings 48 and 50 are installed, and the lower housing 50 is formed in a concave curved part. The upper and lower housings 48 and 50 are formed at both sides of the upper and lower housings 48 and 50. A pair of first and second rollers 52 and 54 are provided in close contact with each other.

The paper feed device 46 configured as described above, first, when the user seats on the upper surface of the document glass 12 to copy the original, and then press the copy button (not shown), at the same time, the light source lamp 16 Will emit light.

The light source 20 emitted from the light source lamp 16 illuminates an original placed on the document glass 12, and the light source 20 reflected on the document glass is reflected downward of the document glass 12. After the shaft magnification is processed by the lens 32 provided therebetween while passing through the first to fifth mirrors 22 to 30, the image is irradiated onto the drum 38.

On the other hand, as described above, the paper 42 stacked on the copier paper cassette 40 is moved toward the drum 38 in accordance with the rotation of the rotary roller 44 installed on one side.

At this time, during the process of moving the paper 42 toward the drum 38 as described above, the paper feed device 46 is the paper 42 stacked on the paper cassette 40 as shown in FIG. ) Is moved along the rotation of the corresponding rotation roller 44 to the inlet of the supply device 46.

At this time, the front end of the paper 42 is first inserted inward by the rotation of the first roller 52 of the paper feeder 46, and the front end of the inserted paper 42 is downward by its own weight. It is bent to move while sliding along the curved surface of the lower housing (50).

In addition, the front edge of the paper 42 is moved between the second rollers 54 by the continuous movement of the paper 42 as described above. In this case, since the second roller 54 is in a stopped state, the paper 42 ) Will no longer be moved.

On the other hand, the first roller 52 corresponding to the second roller 54 continues to rotate to continuously insert the paper 42 into the paper feeder 46, and the front of the paper 42 The tip is no longer advanced and moved by stopping the operation of the second rotary roller 54, so that the paper 42 forms a curved loop. In this case, the paper 42 forms a loop. The elastic force to restore to the horizontal state is to act

When the paper 42 forms a curved loop as described above, the front end of the paper 42 is pressed against and adhered to the second roller 54 by the elastic force of the paper 42. The left and right front end portions of the second roller 54 are coincident with each other.

Then, when the front ends of the paper 42 coincide with each other as described above, the second roller 54 is rotated by a sensor (not shown), and accordingly, the paper 42 is press-fitted into the second roller 54. Will be discharged and moved to the drum 38 side.

However, the paper feeder of the related art configured as described above is, first, thin paper according to a user's selection at the time of copying. For example, when using a tracking paper, the thin paper is first subjected to rotation of the first roller. Sliding in the lower housing to match the front end, and also to form a loop for easy paper feeding, wherein the thin paper has a weak supporting force in the horizontal state, as shown in Figure 2 attached to the accompanying drawings When the front edge is excessively downwardly bent due to its own weight, the front edge is wound to the inside when the paper is continuously moved and moved. As a result, copying is not performed due to an error in the paper feed.

The present invention has been made to solve the above problems, by installing a chute that rotates at a predetermined angle in accordance with the action of the solenoid on a portion of the lower housing, to exactly match the front end, regardless of the thickness of the paper, It prevents excessive deflection by the paper and enables smooth paper feeding.

The present invention as described above is made up of the upper and lower housings spaced apart from each other in order to guide the paper to the drum side, the copy consisting of a pair of first and second rollers installed in a surface in close contact with both sides of the upper and lower housings A paper feed apparatus, comprising: first and second optical sensors installed at portions spaced to one side from the first and second rollers of the upper and lower housings, a chute hinged to the upper surface of one side of the lower housing, A link provided in an inclined state spaced apart from the bottom of the chute, and coupled to an upper portion of the link. A structure comprising a fixed first rod and a first solenoid coupled with the other end of the first rod, wherein the copy paper Regardless of the thickness, the front edge is prevented from being wound inside due to excessive deflection due to its own weight. The process is characterized in that to prevent the folding and skewing of the paper.

1 is a view schematically showing the inside of a general copier

2 is an enlarged cross-sectional view of part A of FIG. 1 according to the prior art;

Figure 3 is a cross-sectional view showing a multi-purpose feeder for the copier of the present invention

Explanation of symbols for the main parts of the drawings

10: copier 12: platen glass

14: opposing reflector 16: light source lamp

18: light reflector 20: light source

22: first mirror 24: second mirror

26: third mirror 28: fourth mirror

30: fifth mirror 32: lens

34 developing part 36 fixing unit

38 drum 40 paper cassette

42: paper 44: moving roller

46: paper feed device 48: upper housing

50: lower housing 52: first roller

54: second roller 60: first optical sensor

62: opening and closing member 64: second optical sensor

66: second rod 68: second solenoid

70: through hole 72: first rod

74: first solenoid 76: link

78: bend 80: chute

82: hinge 84: rubber member

3 is a view showing a multi-purpose feeder for a copying machine of the present invention, the same reference numerals as those of FIGS. 1 and 2 denote the same parts, and thus a description thereof will be omitted. I will explain only.

3, the upper and lower housings 48 and 50 are installed to be spaced apart from each other to guide the paper 42 toward the drum 38. On both sides of the upper and lower housings 48 and 50, a pair of first and second rollers 52 and 54 in close contact with each other are provided.

Here, in the present invention, the first optical sensor 60 is installed on the outer portion spaced apart from the first roller 52, and the opening and closing member 62 is disposed on the inner portion spaced apart from the second roller 54, respectively. ) And a second optical sensor 64, and a second solenoid 68 having a second rod 66 fixed thereto is mounted on a bottom surface of the opening / closing member 62.

In addition, a through hole 70 is formed at one side of the lower housing 50, and a first solenoid 74 having a first rod 72 is installed at an outside spaced from the through hole 70. The link 76 inclined at a predetermined angle is inserted into the lower housing 50 at a predetermined portion of the first rod 72. A fixed portion of the first rod 72 is fixed to this portion of the first rod 72. The bend portion 78 is formed.

In addition, the chute 80 is in close contact with the bent portion 78 of the link 76 is coupled to the hinge 82 so as to be able to rotate up and down about the through hole 70, the through hole ( A rubber member 84 is attached and fixed to the lower portion of the lower portion of the chute 80, and one end of the chute 80 is spaced apart from the lower housing 50 in a state in which the elastic spring 86 is fixed. It is configured to be fixed.

In the paper feed device 46 of the present invention configured as described above, first, the user rests on the upper surface of the document table 12 to copy an original, and then presses a copy button (not shown). The light source 20 emitted from (16) illuminates the original placed on the document glass 12, and the light source 20 projected onto the original glass is the first to fifth mirrors (22, 24, 26, 28, 30). ), The image is irradiated onto the drum 38.

On the other hand, as described above, the paper 42 embedded in the copier paper cassette 40 is moved toward the drum 38 in accordance with the rotation of the rotary roller 44 installed on one side.

At this time, the paper feeder 46 for matching the front end of the paper during the process of moving the paper 42 to the drum 38 as described above, the paper feeder 46 is attached As shown in FIG. 3, the paper 42 stacked on the paper cassette 40 is moved to the rotation of the corresponding rotation roller 44 to move to the inlet of the feeder 46.

At this time, the front end of the paper 42 passes through the first optical sensor 60 during the movement process, thereby operating the first solenoid connected to the first optical sensor 60, and the first solenoid 74. According to the operation of the first rod 72 is inserted into this advance, thereby coupled to the first rod 72. One side of the bent portion 78 formed integrally with this by the advance of the fixed link 76 is The bottom of the chute 80 is pushed while moving in the same direction as the link 76, so that the chute 80 rotates upward at a predetermined angle about the hinge 82.

Then, the front end of the paper 42 passing through the first optical sensor 60 is slid along the upper surface of the chute 80 which is already upwardly rotated to continuously advance and move, and the paper 42 As the front end of the paper 42 moves continuously along the curved surface of the lower housing 50, the front end of the paper 42 moves to a position close to the second optical sensor 64. In this case, the chute 80 Since the upper surface of the lower surface and the curved surface of the lower housing 50 is formed to be smooth to each other to prevent the front end of the paper 42 is folded or wound due to sag.

In addition, the first solenoid 74 connected to the second optical sensor 64 is caused by the continuous movement of the paper 42 so that the front end of the paper 42 passes through the second optical sensor 64. The first rod 72 is retracted, thereby engaging the first rod 74. The fixed link 76 is an elastic spring 86 provided between the lower housing 50 and a portion spaced apart by a predetermined distance. As it is rotated downward by the restoring force of), it is moved to the initial position.

At this time, the rubber member 84 is attached and fixed to a predetermined portion of the lower housing 50 corresponding to the bottom surface of the link 76 so as to prevent noise and damage to the chute 80 due to mutual contact. Will be.

On the other hand, the paper 42 passing through the second optical sensor 64 is continuously moved to be in close contact with one side of the opening and closing member 62, the front tip is matched, and the first rotating roller 52 continues By inserting the paper 42 into the inside of the paper feeder 46 by the rotation, the paper 42 forms a curved loop and at the same time an elastic force to restore the horizontal state is applied.

Then, after a predetermined time in the above state, the opening and closing member 62 is opened while being lowered by the operation of the second solenoid 68, and at the same time, the paper 42 is horizontal due to the elastic force of the loop formed. While restoring to the state, the front end of this paper 42 is press-fitted and pressed between the second rollers 54, and the second roller 54 moves the press-pressed paper 42 to the drum 38 side. It is to be made.

In addition, in the above state, the opening and closing member 62 is opened, and at the same time, the first solenoid 74 is operated to move the link 76 upward, and accordingly, the chute 80 rotates upward at a constant angle. The rear portion of the paper 42 placed on the upper surface of the paper 80 is kept in a flat horizontal state with the front portion of the paper 42 to prevent folding or twisting during the process of moving the paper 42.

On the other hand, if the paper is a thin paper according to the user's choice, for example, using a tracking paper, conventionally thin paper passes through the first roller, while the support force of the paper is weakly wound or folded inside As a result, although copying was not made due to the movement of the paper, the present invention provides an excessive deflection of the front tip portion of the paper by excessively rotating the chute of the front tip portion at an angle according to the operation of the first solenoid. This prevents the front end from being wound inwardly, and also keeps the rear portion of the paper horizontal to prevent the paper from being folded or twisted during the process of moving to the drum side.

As described above, the present invention installs a chute that rotates at a predetermined angle according to the action of the solenoid on a predetermined portion of the lower housing, to accurately match the front end regardless of the thickness of the paper, and to prevent excessive sag caused by its own weight, smooth paper feeding To do it.

In addition, by maintaining the rear portion of the paper in a smooth horizontal state to prevent the folding or twisting of the paper during the process of moving to the drum to achieve a smooth paper feed, after all, easy to copy regardless of the thickness of the paper from the user This has the effect of improving reliability and performance on the product.

Claims (5)

In the paper feeder for the copier consisting of the upper and lower housings spaced apart from each other in order to guide the paper to the drum side, and a pair of first and second rollers installed in close contact with both sides of the upper and lower housings. And first and second optical sensors installed at portions spaced to one side from the first and second rollers of the upper and lower housings, a chute hinged to the upper surface of one side of the lower housing, and spaced apart from the bottom of the chute. And a link installed in an inclined state, and coupled to an upper portion of the link. A fixed first rod and a first solenoid coupled with the other end of the first rod are provided. 2. The apparatus of claim 1, further comprising: an opening and closing member installed to vertically move between the second roller and the second optical sensor, a second rod fixed to the bottom of the opening and closing member, and a second rod coupled to the reciprocating movement. Multi-purpose feeder for the copier, characterized in that consisting of two solenoids. The multi-purpose feeder of claim 1, wherein a bent portion is integrally formed at the tip of the link. The multi-purpose feeder of claim 1, wherein an elastic spring is installed at a lower bottom of the chute and a predetermined inside of the lower housing. 5. The multi-purpose feeder of claim 1 or 4, wherein a rubber member for preventing shock and noise is attached to a predetermined portion of the lower housing in which the bottom of the chute is in close contact.