KR100647441B1 - Heating roller for printer - Google Patents

Abstract

A heating roller for a printer is provided to prevent the separation and deviation of component parts while driving the heating roller by closely attaching an electrode element, a gear cap, and an end cap, which are integrated in a single body, to a roller body using a fixing element having elasticity. A cylindrical type roller body(10) guides print papers, and heats and pressurizes the print papers by an external power source. End caps(30) are respectively coupled with both sides of the roller body(10) through coupling elements. Electrode elements(70) are electrically connected to the roller body(10) and the external power source, and respectively coupled with outer surfaces of the end caps(30). A gear cap(50) is coupled with at least one of the end caps(30) to receive power for rotating the roller body(10) from the external power source. The gear cap(50) is integrated into the end cap(30) and the electrode element(70) in a single body.

Description

Heating Roller for Printing Equipment {Heating Roller for Printer}

1 is a perspective view showing a heating roller for a printing apparatus according to the present invention,

Figure 2 is an exploded perspective view showing a heating roller for a printing apparatus according to the present invention,

3 is a partially enlarged view of FIG. 2;

Figure 4 is a perspective view of the gear cap in Figure 2,

5 is a perspective view showing the coupling of the end cap and the fixing piece and the inner tube of the heating roller for a printing apparatus according to the present invention,

Figure 6 is a perspective view showing the coupling of the end cap and the heating element and the inner tube in the heating roller for a printing apparatus according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: roller body 11: inner tube

13: appearance 15: heating element

17: conductive member 20: fixed piece

21: turning 30: end cap

31: home 33: hall

35: receiving groove 37: fastening groove

50: gear cap 51: seating groove

53: through hole 55: raised surface

70: electrode piece 71: fastening groove

80: screw 90: coupling means

100: heating roller

The present invention relates to a heating roller for a printing apparatus, and more specifically, an electrode piece, a gear cap, and an end cap form a body at the time of joining, and are in close contact with the roller body through a fixing piece having elasticity. It is possible to prevent the separation of components including caps and separation, and to reduce the number of parts required for manufacturing by making components on both sides of the heating roller have the same structure and shape, and both sides of the gear cap By making it possible to reduce the inconvenience of identification and determination of parts in the manufacturing process, the process efficiency can be increased, as well as the parts bonded to the roller body in the manufacturing process to maintain the pre-coupling state. The present invention relates to a heating roller for a printing apparatus that enables easier operation.

In general, laser beam printers are not only used alone but also widely used in photocopiers and fax machines due to the advantages of high printing speed, high resolution, low noise and various recording media. A process of printing image data of a computer is as follows.

When the image data of the computer is transmitted to the printer, the image data is converted into the laser light in the optical part and scanned by the photosensitive member. The laser light scanned by the photosensitive member converts the lighted part into a conductor and is separated from the part not receiving the light. By generating a potential difference, a latent image is formed on the photoconductor, and the toner adheres to the latent image while the photosensitive member on which the latent image is formed passes through the developing portion, and the recording paper passes between the injection transfer chargers, and the toner on the latent image of the photosensitive member is transferred to the recording paper. After the recording paper passes through the fixing unit, heat and pressure are applied to the toner to adhere to the recording paper.

The fixing process is a process of fixing a toner image transferred to a sheet in the transfer process by applying heat and pressure, and is usually performed by a fixing unit comprising a pair of rollers rotating against each other, and the pair of rollers constituting the fixing unit. One is a pressure roller and the other is a heating roller.

The heating roller is installed in the discharge side section of the inside of the machine, and a predetermined heating means and external power source for fixing by heating / pressing the characters, pictures, etc. transferred on the paper when the recording paper with visible image is discharged by the drum. A gear cap is required for the transmission of rotational power. The heat generating means is configured to enable heat transfer to the roller body, and the gear cap is coupled to either side of both sides of the roller body.

By the way, the conventional heating roller as described above has a large number of parts are used to have a different configuration and structure of the components on both sides of the roller body, that is, the side of the gear cap is coupled, and the non-coupled side, the parts during manufacture There was labor due to the identification and judgment of the. In addition, when the heating roller rotates, components such as the gear cap are often separated and separated from the roller body.

The present invention has been made to solve the above problems, an object of the present invention is to provide a heating roller for a printing device that can prevent the separation and separation of components, including the gear cap when driving the heating roller. .

In addition, another object of the present invention is to reduce the number of components required during manufacturing by making the components on both sides of the heating roller to have the same structure and shape, both sides have a configuration that can be coupled to the gear cap manufacturing process To provide a heating roller for the printing apparatus that can reduce the inconvenience of identifying and determining the parts.

In addition, another object of the present invention is to provide a heating roller for a printing apparatus that can be made easier to maintain the pre-coupling state of the components coupled to the roller body in the manufacturing process, prior to coupling.

The present invention for solving the above problems, in the heating roller of the printing apparatus, is connected to the power source so as to be capable of power transmission to guide the printing paper by rotation, the printing is guided by the heat generated by the power applied from the external power source A cylindrical roller body for heating / pressing the paper; A plurality of end caps respectively coupled to both sides of the roller body by coupling means; A plurality of electrode pieces electrically connected to the roller body and an external power source for applying power to the roller body, and coupled to outer surfaces of the end caps, respectively; Is coupled to at least one side of the end caps to receive power for rotation of the roller body from an external power source, interposed between the end cap and the electrode piece when coupled to the end cap and the electrode piece and one body Forming gear cap; Characterized in that configured to include.

The present invention having such a feature will be more clearly described through the preferred embodiment accordingly. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a heating roller for a printing apparatus according to the present invention, Figure 2 is an exploded perspective view showing a heating roller for a printing apparatus according to the invention, Figure 3 is a partially enlarged view of Figure 2, Figure 4 2 is a perspective view showing a gear cap, Figure 5 is a perspective view showing the coupling of the end cap and the fixing piece and the inner tube of the heating roller for printing apparatus according to the present invention, Figure 6 is an end in the heating roller for printing apparatus according to the present invention A perspective view showing a combination of a cap, a heating element, and an inner tube.

As shown, the heating roller 100 according to the present invention is located opposite to the pressure roller when mounted on a printing apparatus (not shown), the roller body 10, the end cap 30, the electrode piece 70, Gear cap 50 is included.

The roller body 10 takes the shape of a cylinder, is connected to the external power source via a gear cap 50 to be described later to enable power transfer to guide the printing paper by rotation with the pressure roller (not shown), It is connected to an external power source through an electrode piece 70 to be described later, and generates heat by the power applied from the external power source, thereby heating / pressing the printed paper. Looking at the configuration of the roller body 10, the roller body 10 is configured by the inner tube 11 and the outer surface 13 is coupled with the heat generating element 15 therebetween. The inner tube 11 and the outer tube 13 are formed with a difference in diameter between the inner tube 11 and the inner tube 11 are incorporated into the outer tube 13. That is, the inner tube 11 has a smaller diameter than the outer tube 13 and is formed shorter than the outer tube 13 in length. Here, the heating element 15 is located in the space generated due to the difference in diameter between the outer appearance 13 and the inner tube 11. The structure as described above is a form in which the exterior 13 and the inner tube 11 are in close contact with each other with the heating element 15 interposed therebetween, and the mutual appearance of the exterior 13 and the inner tube 11 is in the manufacturing process. The inner tube 11 may be expanded by pneumatic or the like. As a result, the inner and outer tubes 13 and the heating element 15 form a body. The heating element 15 is generated by the voltage applied by the electrode piece 70 to conduct heat to the exterior 13, bar can be used by using a conventional conductive member and paste, such as a coil, The electrode piece 70 is electrically connected to the electrode piece 70 through a conductive member 17. Here, the structure of the electrode piece 70, the conductive member 17 and the heat generating element 15 will be described. The conductive member 17 connected to the end of the heat generating element 15 is connected to the end cap 30 which will be described below. It extends to the point where the electrode piece 70 of the end cap 30 is coupled through the formed hole 33, and thus the electrode piece 70 is grounded with the conductive member 17. 70 and the heating element 15 are electrically connected to each other via the conductive member 17.

The end caps 30 are coupled to both sides of the roller body 10, respectively, and are formed in plural and have a circular cross section to take the shape of a stopper. Here, the end cap 30 is coupled to the inner tube 11 and the outer tube 13 of the roller body 10 at the same time, at this time, the outer circumferential surface along the longitudinal direction is formed by the end due to the diameter change of each tube (11,13) to form a strong bond with the jungle to prevent. Here, the end cap 30 has a stage formed at a plurality of points and the ends of the inner tube 11 and the exterior 13 are located at both points. In addition, the receiving groove 35 for coupling with the fixing piece 20 to be described later is formed at the point retreating from the end forming point where the end of the inner tube 11 of the end cap 30 is located, the receiving groove 35 is formed on the outer surface of the end cap 30 in the circumferential direction.

The fixing piece 20 has a substantially annular shape and is separated into a plurality of parts so as to be easily coupled to the end cap 30, that is, to be easily fitted into the receiving groove 35. In addition, the fixing piece 20 includes a plurality of protrusions 21 protruding a predetermined length in the circumferential direction, the protrusion 21 is inclined toward the end side of the inner tube 11 and has a constant elasticity. . In this case, the protrusion 21 is in close contact with the inner surface of the inner tube 11 when the end cap 30 and the inner tube 11 are coupled (due to the protrusion having a certain elasticity). The cap 30 and the inner tube 11 are prevented from being separated in the axial and circumferential directions. As a result, the fixing piece 20 in which the protrusion 21 is formed and the receiving groove 35 of the end cap 30 are coupled to each other so that the end cap 30 and the inner tube 11 form a firm coupling. It is

The electrode pieces 70 are configured in plural and are respectively coupled to the outer surfaces of the end caps 30, and as described above, the roller body (10) is applied to supply power to the heating element (15) of the roller body (10). It is electrically connected to the heating element 15 and the conductive member 17 of the 10, and also electrically connected to an external power source. Here, the coupling of the electrode piece 70 and the end cap 30 is coupled to the fastening grooves 37 and 71 formed to correspond to the end cap 30 and the electrode piece 70, respectively. Is done.

On the other hand, at least one side of the end cap 30 is coupled to the gear cap 50, which is to receive the power for the rotation of the roller body 10 from an external power source. Here, looking at the structure in which the gear cap 50 is coupled, the gear cap 50 is interposed between the end cap 30 and the electrode piece 70 when coupled to the end cap 30 and the gear cap 50 ) To form a body. Accordingly, when the gear cap 50 is interposed between the electrode piece 70 and the end cap 30, the screw 80 penetrates and engages in the gear cap 50. The through hole 53 is formed to be.

In addition, the preferred combination of the electrode piece 70, the gear cap 50 and the end cap 30 is presented as follows.

In this case, the electrode piece 70 has a substantially triangular shape and has a rounded corner with rounded corners. In addition, the gear cap 50 has a mounting groove 51 having a shape corresponding to that of the electrode piece 70 on one side thereof, which is the widest possible contact of the electrode piece 70 to the gear cap 50. The purpose is to have an area and to be seated. In addition, on the other side of the gear cap 50 (opposite side of the side to which the electrode pieces are coupled), a raised surface 55 corresponding to the seating groove 51 is formed to protrude. In addition, a groove 31 having a shape corresponding to the raised surface 55 is formed at the side of the end cap 30 in contact with the raised surface 55.

According to the above, the electrode piece 70 is seated on the gear cap 50 by the seating groove 51, and again, the gear cap 50 is formed of the raised surface 55 and the end cap 30. The end cap 30 is firmly fitted with the groove 31 to be coupled thereto. Of course, in the present embodiment, the coupling grooves 37 and 71 of the end cap 30 and the electrode piece 70 and the gear cap for the coupling of the gear cap 50, the electrode piece 70, and the end cap 30. Although the configuration in which the screw 80 is coupled through the through hole 53 of the 50 has been described above, the additional configuration as described above minimizes the stress applied to the screw 80 in use, and the screw (in manufacturing) Before the 80 is fastened, the gear cap 50, the electrode piece 70, and the end cap 30 may be in a temporary coupling state in which flow is prevented, thereby enabling faster and easier coupling.

As described above, the present invention forms a body when the electrode pieces, gear caps, and end caps are coupled to the roller body through the fixing piece having elasticity to separate the components including the gear cap during the driving of the heating roller There is an effect that can prevent the phenomenon of departure.

In addition, the present invention can reduce the number of parts required during manufacturing by making the components on both sides of the heating roller to have the same structure and shape, and both sides have a configuration that can be coupled to the gear cap of the parts in the manufacturing process By reducing the inconvenience of identification and judgment, there is an effect that can increase the process efficiency.

In addition, the present invention has the effect of enabling the easier operation by maintaining the pre-coupling state before the component is coupled to the roller body in the manufacturing process.

Claims (6)

In the heating roller 100 of the printing apparatus, A cylindrical roller body 10 connected to an external power source so as to be power-transmittable to guide the printing paper by rotation, and to heat / press the printing paper that is generated by being guided by a power source applied from an external power source; A plurality of end caps 30 coupled to both sides of the roller body 10 by coupling means 90; A plurality of electrode pieces 70 electrically connected to the roller body 10 and an external power source for applying power to the roller body 10, and coupled to outer surfaces of the end caps 30, respectively; Is coupled to at least one of the end caps 30 to receive the power for the rotation of the roller body 10 from an external power source, interposed between the end cap 30 and the electrode piece 70 Gear cap 50 to form a body with the end cap 30 and the electrode piece 70 when combined; Heating roller for a printing apparatus comprising a. The method of claim 1, The roller body 10 is a heating roller for a printing apparatus, characterized in that the inner tube (11) and the outer surface (13) formed with a difference in diameter between each other is configured to be coupled with the heating element (15) therebetween. The method of claim 2, The coupling means 90 A fixing piece 20 having a predetermined elasticity to be in close contact with the inner surface of the inner tube 11 and a protrusion 21 formed to be inclined toward an end side of the inner tube; Receiving groove 35 formed in the circumferential direction on the outer surface of the end cap 30 so that the fixing piece 20 can be coupled to the end cap 30; Heating roller for a printing apparatus comprising a. The method of claim 3, wherein The fixing piece (20) is a heating roller for a printing apparatus, characterized in that configured to be separated into a plurality in order to facilitate the coupling with the end cap (30). The method of claim 1, Coupling of the electrode piece 70 and the end cap 30 is made of a screw 80 is coupled to the coupling grooves (37, 71) formed to correspond to the end cap 30 and the electrode piece (70), When the gear cap 50 is interposed between the electrode piece 70 and the end cap 30 in the gear cap 50, a through hole 53 is formed so that the screw 80 can be penetrated and coupled. Heating roller for printing apparatus, characterized in that. The method of claim 1, The gear cap 50 has a mounting groove 51 having a shape corresponding to the electrode piece 70 so that the electrode piece 70 is seated on one side thereof, and the mounting groove 51 on the other side thereof. A ridge surface 55 having a corresponding shape is formed to protrude, and the ridge surface 55 corresponding to the ridge surface 55 may be fitted to a side of the end cap 30 that is in contact with the ridge surface 55. Heating roller for printing apparatus, characterized in that the groove 31 of the shape is formed.

Images