KR19990038175A - Paper sorting device of laser beam printer - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs.

The present invention relates to a sheet sorting apparatus for a laser beam printer.

I. The technical problem to be solved by the invention.

The present invention provides a paper sorting apparatus of an economical laser beam printer that is provided with a detachable discharge roller and a paper sorting device independently from the main body, the paper is sorted after passing through the discharge roller.

All. Summary of the Solution of the Invention.

The present invention protects and wraps a pair of discharge rollers for discharging the paper to the discharge tray, and detachable from the main body, assembling the housing to enable linear movement, and configures the discharge roller assembly. According to the operation of the solenoid is installed by installing a solenoid operating in accordance with the assembly so as to be interlockable with the assembly, the other side is supported by the frame and the paper is discharged.

la. Important use of the invention.

Laser beam printer or copier.

Description

Paper sorting device of laser beam printer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser beam printer, and more particularly, to a paper sorting apparatus provided for sorting papers immediately before papers are discharged.

In general, a laser beam printer is most commonly used among electrophotographic processors using an electrophotographic development method. The laser beam printer using the electrophotographic development method is a process in which a sheet of paper fed from a sheet feeder is turned into a visible image by a developer, the toner is fixed by a fixing unit, and the sheet is discharged to a discharge tray by a discharge roller. .

Such a conventional laser beam printer is shown in FIG. As shown in FIG. 1,

A plurality of sheets of paper P stacked in the paper feeding cassette 10 exist at the pick-up position by the compression coil spring, and are sequentially fed in order from the top of the sheets one by one to the front by friction as the pickup roller 12 rotates. The loaded paper arrives at the pair of alignment rollers 20, the ends of the paper are aligned, and are directed toward the developing device 30.

Then, the toner turns into a visible image through the developing device 30, and the toner is fixed on the paper by the high heat and high pressure of the heating roller 401 and the pressing roller 402 of the fixing unit 40. Subsequently, the sheet is guided to the sheet path by the guide 42 and is finally discharged through the pair of discharge rollers 50.

In the laser beam printer in which the copying process is performed by such a series of processes, the paper is loaded in the order of copying to the output tray 60 while the paper after the copying process passes through the delivery roller 50 fixed to the frame of the main body. The discharge roller 50 is installed in a pair to engage the discharge paper discharged to the discharge bin, is fixed to the frame of the main body about the axis. And, it is driven by receiving power from a drive mechanism composed of a drive motor and a plurality of gear arrangements not shown in the figure.

However, when the paper is loaded on the discharge tray according to the copied order as described above, it is difficult to classify the paper and load it on the discharge tray because no separate device for classifying the copied paper is provided. And, if you want to classify the paper, the inconvenience that the user must sort the paper one by one.

The present invention has been made to solve the above-mentioned conventional problems, an object of the present invention is to provide a laser beam printer provided with a discharge roller and a paper sorting apparatus detachably detachable from the main body.

Another object of the present invention is to provide a laser beam printer in which paper is sorted after passing through a discharge roller.

It is another object of the present invention to provide a paper sorting apparatus for an economical laser beam printer.

In order to achieve the above objects, the present invention is to configure the discharge roller assembly by assembling the housing to protect and wrap a pair of discharge roller for discharging the paper to the discharge tray, detachable from the main body, linearly movable, One side of the assembly is installed so as to interoperate with the assembly and the solenoid operating in accordance with whether the current is applied, the other side is installed by the elastic body so as to be supported by the frame and discharge the paper by sorting the paper according to the operation of the solenoid.

1 is a configuration diagram schematically showing a laser beam printer according to a conventional embodiment

Figure 2 is a schematic side view showing a state in which the solenoid is not operating in the laser beam printer according to an embodiment of the present invention

Figure 3 is a schematic side view showing a state in which the solenoid operates in the laser beam printer according to an embodiment of the present invention

<Description of Symbols for Main Parts of Drawings>

50: badge roller 52: housing

54: Solenoid 56: Compression Coil Spring

Hereinafter, with reference to the accompanying drawings will be described in detail the most preferred embodiment of the present invention. First, in describing each of the drawings, only the same components have the same reference numerals as much as possible even if shown on different drawings. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

2 is a view showing a state in which the solenoid is not operating in the paper sorting apparatus according to an embodiment of the present invention, Figure 3 is a view showing a state in which the solenoid is operated in the paper sorting apparatus according to an embodiment of the present invention Drawing. Referring to the drawings,

The present invention is a detachable configuration of the principle of the known solenoid 54 and a pair of the discharge roller 50 in the main assembly in an independent assembly (assembly). A plurality of discharge rollers 50 are installed at equal intervals around the shaft 502, and rubber is attached to an outer circumferential surface to maximize friction with paper.

In a conventional laser beam printer, a pair of discharge rollers are rotatably fixed to a frame of a main body, and are connected to a driving mechanism and operated. However, in the laser beam printer of the present invention, the pair of discharge rollers 50 is constituted by an assembly detachably detachable from the mechanism of the main body. That is, since the assembly is independently configured, the assembly is detachable from the main body according to the user's will, and the main assembly is movable according to the mechanical shape of the injection molding.

That is, the housing 52 which protects a pair of discharge roller 50 is provided, and this discharge roller assembly is a shape which can be attached to the guide frame 46 of a main body by a housing. In addition, the solenoid 54 and the elastic body 56 are installed at both ends in order to reciprocally move the discharge roller assembly. The elastic body is most preferably a compression coil spring. Solenoid 54 installed on one side of the discharge roller assembly, as is known, the force is applied to the assembly by the actuator 541 is immersed or stretched depending on whether the power is applied, the compression coil spring 56 is applied as the actuator 541 of the solenoid The discharge roller assembly is supported and provides a force to push the assembly if the actuator of the solenoid is inoperative.

In this figure, the driving mechanism for driving the discharge roller 50 is omitted in the figure. As the discharge roller assembly moves, the driving mechanism moves with it.

As the paper sorting apparatus as described above is installed on the discharge roller side and the discharge roller 50 is moved, the paper is placed at some interval in the left and right directions.

According to this configuration, when the laser beam printer is in the normal mode or the stack mode,

Referring to Figures 1 and 2, the sheet feeder is sequentially fed by the pick-up rollers one by one, the leading edges of the sheets are aligned by the alignment rollers, and after passing through the developing unit and the fixing unit, Upon completion, the paper is discharged to the discharge bin by the discharge roller 50.

On the other hand, in stack mode,

Referring to FIGS. 1 and 2, the sheet feeder is sequentially fed by the pick-up roller, and then the leading edge of the paper is aligned by the alignment roller, and after passing through the developing unit and the fixing unit, immediately before passing through the discharge roller 50. It works like this:

First, the copying paper that has arrived at the delivery roller 50 passes through the delivery roller. Then, when the second sheet passes through the discharge roller, the solenoid 54 is powered on, and the solenoid 54 then operates. Thus, actuator 541 of solenoid pushes the delivery roller assembly. The assembly is moved in the direction of the arrow.

Subsequently, upon the rotation of the discharge roller, the second sheet of paper is moved by the moving distance of the assembly from the first sheet of paper to be discharged to the discharge tray. After the second sheet is discharged, the solenoid 54 is powered off and returned to its initial state by the force of the compression coil spring 56 holding the discharge roller assembly. The third sheet of paper is passed through solenoid 54 because it is not powered.

Then, when the fourth sheet passes, the solenoid 54 is powered again, and the solenoid's actuator 541 pushes the assembly toward the spring. Therefore, the fourth sheet is loaded on the second discharged sheet while maintaining a distance slightly separated from the third sheet. In this repetitive action, the paper is classified into two sides and discharged and loaded as it is discharged.

In this configuration, the force pushed by the solenoid actuator 541 is much stronger than the elastic force of the compression coil spring 56. In addition, whether or not the power supply of the solenoid 54 described above is electrically configured.

As a result, the output roller assembly can be independently configured to be detachable from the main body and to be movable, and at the same time, depending on whether the solenoid is powered, the actuator pushes the assembly or returns the sheet by elastic force by the compression coil spring. It will be loaded from side to side.

On the other hand, in the detailed description of the present invention has been described with respect to specific embodiments, it will be apparent to those skilled in the art that various modifications are possible without departing from the scope of the present invention.

As described above, the present invention is configured to be detachable from the main body by moving the discharge roller in an independent assembly in the laser beam printer, and to be configured to be movable left and right, and to link the corresponding solenoid and compression coil springs. Installation is effective for sorting and stacking paper economically at low cost.

Claims (2)

In the laser beam printer provided with a pair of discharge rollers fixed to the main body for discharging the paper after the copying process is completed, Protects and wraps a pair of discharge rollers for discharging the paper into the discharge tray, assembles the discharge roller assembly by assembling the housing so as to be detachable from the main body and linearly moveable, and operates according to whether a current is applied to one side of the assembly. And a solenoid to be interlocked with the assembly, and an elastic body installed on the other side so as to be supported by the frame so that the paper is discharged by classifying the paper according to whether the solenoid is operated. The apparatus of claim 1, wherein the elastic body is a compression coil spring.