KR19980036201A - Jam Paper Remover of Inkjet Printer - Google Patents

Abstract

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

The present invention relates to an apparatus for removing jam paper of an inkjet printer.

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

In the present invention, when a paper jam occurs in the process of printing on an inkjet printer from the user's point of view, the paper jam can be removed by a simple operation without applying excessive force for removing the jam, and the inkjet which prevents damage to the device set is prevented. It is to provide a paper jam removing device of the printer.

3. Summary of the Solution of the Invention.

The present invention provides a drive gear meshed with a gear of a feed roller connected to a drive motor to remove jam paper generated between a pickup roller and a friction roller for transferring paper sheet by sheet in a paper feed tray; A cam gear fixed at both ends of the tension coil spring and fixed at both ends of the shaft just before the lever installed opposite to the knock-up plate so that the friction roller rotates about the rotation axis; And it is installed on one side of the carriage so as to be engaged between the drive gear and the cam gear at the same time by the electrical signal when the jam paper is generated, and comprises a connecting gear for driving the cam gear by transmitting the power of the motor to the cam gear To be characterized.

4. Important uses of the invention.

When the jam paper is generated in the inkjet printer, the jam paper can be removed without applying excessive force, thereby preventing damage to the device, and achieving the effect of removing the paper quickly and easily when removing the jam paper.

Description

Jam Paper Remover of Inkjet Printer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet printer, and more particularly, to a paper jam removing device for automatically removing paper jams generated during paper feeding.

In general, an inkjet printer, as shown in FIG. 1, one side of the paper support 12 at the bottom of the paper tray 12 in which the sheet of paper 100 is loaded is compressed coil spring. 14 keeps in close contact with the pickup roller (20). That is, the paper located at the top of the plurality of sheets always maintains contact with the pickup roller 20.

Subsequently, when the motor gear 32 is rotated by the drive motor 30, the pickup roller gear 20a is rotated by the first and second power transmission gears 34 and 36, and the pickup roller 20 and the finger are rotated. (Also referred to as an actuator: not shown in the figure), the paper is sequentially conveyed to the printing position in which the printhead 54 is located. At this time, the paper conveyed to the print head position is exited from the paper feed tray 10, and is corrected by a friction roller (22: friction roller) and a feed roller (24) installed on one side of the lever (40). It is conveyed by receiving a conveying force. The lever 40 is tensioned by the tension coil spring 42 supported on the knock up plate 70, so that the friction roller 22 is in close contact with the feed roller 24. It is a structure that conveys paper accurately. The feed roller 24 is also rotated by the power transmission gear 38 meshed with the motor gear 32 of the drive motor.

The paper passing through the friction roller 22 and the feed roller 24 receives power by a timing belt and the carriage 50 linearly reciprocates about the shaft 56 to perform a printing function on the paper. . That is, the ink is ejected from the nozzle holes formed in the nozzle plate of the print head 54 provided on the bottom of the ink cartridge 52 mounted on the carriage 50, thereby printing on the paper. The paper on which the printing process is completed is then loaded onto the discharge tray by the delivery roller through the frame.

In the inkjet printing process in which the printing process is performed as described above, when a paper jam occurs, the entire apparatus set is stopped and displayed by the light emitting diode located at the upper part of the case to output an error display. It is a structure to advance printing by pressing the feed button again after forcibly removing jammed paper with a certain force.

However, as described above, the paper jam state during paper feeding almost occurs between the pickup roller and the friction roller. In this case, in order to remove the jam paper, the lever is forcibly pulled out to remove it. Most are mostly. At this time, a problem arises in that damage to the entire printer apparatus is applied by forcibly applying force.

Moreover, when the jam state of the paper occurs, it becomes very cumbersome by having to perform various operations to remove the jam of the paper.

The present invention has been made to solve the above-mentioned conventional problems, the object of the present invention, when a paper jam occurs in the process of printing in the inkjet printer from the user's point of view, a simple operation without applying excessive force for jam removal It is to provide a paper jam removing device of an inkjet printer capable of removing paper jams.

Another object of the present invention is to provide a paper jam removing apparatus of an ink jet printer that prevents damage to the apparatus set by applying an excessive force to remove the jam when the paper jam phenomenon occurs in the process of printing in the ink jet printer.

In order to achieve the above objects, the most preferred embodiment according to the technical idea of the present invention is connected to the drive motor to remove the jam paper generated between the pickup roller and the friction roller for transporting the sheet by sheet in the paper feed tray Drive gear meshed with gear of feed roller; A cam gear fixed at both ends of the tension coil spring and fixed at both ends of the shaft just before the lever installed opposite to the knock-up plate so that the friction roller rotates about the rotation axis; And it is installed on one side of the carriage so as to be engaged between the drive gear and the cam gear at the same time by the electrical signal when the jam paper is generated, and comprises a connecting gear for driving the cam gear by transmitting the power of the motor to the cam gear To be characterized.

1 is a schematic side view showing a configuration of an inkjet printer for printing on a sheet according to a conventional embodiment

Figure 2 is a schematic side view showing the configuration of an inkjet printer for printing on a sheet according to an embodiment of the present invention

Figure 3 is a side view showing the insertion structure of the cam gear according to an embodiment of the present invention

Figure 4 is a schematic side view showing a state in which the jam removal apparatus of the paper is installed when the paper jam in the inkjet printer according to an embodiment of the present invention

Figure 5 is a schematic side view showing the operating state of the jam paper removing apparatus for removing the jam of the paper when the paper jam in the inkjet printer according to an embodiment of the present invention

Explanation of symbols on the main parts of the drawing

1: drive gear 2: cam gear

2a: Cam Gear Shaft 3: Connecting Gear

4: Compression Coil Spring 10: Paper Feed Tray

20: pickup roller 30: drive motor

40: lever 50: carriage

100: paper

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, the same components have the same reference numerals as much as possible even though they are shown in different drawings. In describing the present invention, when it is determined that description of related known functions or configurations may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

As shown in Figures 2 and 3, the configuration of the jam paper removing apparatus according to an embodiment of the present invention, roughly, the drive gear (1) engaged with the gear 24a of the feed roller 24, the knock-up plate ( 70) and the cam gear (2) in which the lever is rotated about the rotation axis between the one side and the lever (40) and the connection that is simultaneously engaged between the drive gear (1) and the cam gear (2) when the jam paper occurs Gear 3 and the like.

In detail, the driving gear 1 may include a motor gear 32, a transmission gear 38 engaged with the motor gear 32, and a gear 24a of the feed roller meshed with the transmission gear 38. The driving force of 30 is transmitted. Subsequently, the cam gear 2 is fixed to one side of the tension coil spring 42 having one side fixed to the knock-up plate 70 and is supported to receive a tensile force at all times, while the friction roller 22 rotates on the other side. It is fixed to both ends of the shaft 2a immediately before the lever installed to rotate to the center, and serves to rotate the lever 40 by rotation. At this time, the cross section of the shaft 2a of the cam gear 2 is semi-circular in order to implement the function of pushing and pulling the lever 40 forward and backward. Thus, the shaft 2a of the cam gear 2 always remains slightly away from one side of the lever, because the one side of the lever is also supported by the tension coil spring and of the friction roller for the feed roller. This is because the pressure must be maintained at all times. The tension coil spring 42 is installed so that the friction roller 22 and the feed roller 24 are in close contact with each other so that the paper transfer is accurate.

The drive gear 2 and the cam gear 2 are spaced apart from each other, and the connecting gear 3 is inserted to transfer the power of the drive motor 30 between the drive gear and the cam gear. In other words, when the jam paper occurs, the cam gear 2 should be driven, so that the connection gear 3 is electrically inserted only when the jam paper occurs for power transmission. This is because the carriage moves left and right linearly about the shaft by the timing belt, and the timing belt is set by the drive motor to speed or distance.

For the same reason, the connecting gear 3 is installed on one side of the carriage 50, and is inserted between the driving gear 1 and the cam gear 2 when the carriage moves toward the driving mechanism. do. At this time, the compression coil spring 4 is installed between the carriage 50 and the connecting gear 3 so that the connecting gear 3 can be smoothly inserted between the driving gear 1 and the cam gear 2.

As shown in Figs. 4 and 5, in the operation according to the above configuration, in the paper feed tray 10 in which a plurality of sheets of paper 100 are loaded, the sheets are sequentially stacked by the pick roller 20 and the fingers. The moved and conveyed paper passes through the friction roller 22 and the feed roller 24. At this time, if the jam paper occurs (site A), the paper is still detected after a certain amount of transfer, so the printer confirms that the paper of the printer has not been transferred normally, and the device displays an error signal. The carriage 50 then moves toward the drive gear 1 and the cam gear 2 of the drive mechanism. Thereafter, the connecting gear 3 is engaged between the drive gear and the cam gear to transmit the power of the motor 30 to the cam gear 2. (Power transmission path: drive motor 30 → transmission gear 38 → feed roller gear 24a → drive gear 1 → coupling gear 3 → cam gear 2)

As shown in FIG. 5, when the cam gear 2 rotates when the driving motor is turned, the shaft 2a rotates, and thus the plane of the shaft 2a is spaced apart or variable in contact with the lever 40. While pushing the lever forward by the rotation. Subsequently, the lever 40 rotates clockwise about the rotation axis, and the friction roller 22 moves upward to be separated from the feed roller 24. At this time, the user removes the jam paper.

Subsequently, when the feed button is pressed again, the printer which recognizes that the feed button is pressed rotates the cam gear 2 counterclockwise (by right angle direction) to restore the original state, and then moves the carriage 50 to connect the gear ( 3) is separated from the drive gear (1) and the cam gear (2). Thereafter, the refeeding operation and the printing operation are continuously performed.

As described above, when the jam paper is generated in the inkjet printer, the present invention can remove the jam paper without applying excessive force, thereby preventing damage to the machine, and quickly and easily removing the paper when removing the jam paper. To achieve. On the other hand, in the detailed description of the present invention has been described with respect to specific embodiments, it is obvious to those skilled in the art that various modifications are possible without departing from the scope of the present invention.

Claims (4)

In the driving mechanism of the inkjet printer, Meshed with the gear 24a of the feed roller 24 connected to the drive motor 30 to remove the jam paper generated between the pick-up roller 20 and the friction roller 22 for feeding paper sheet by sheet from the paper feed tray. Drive gear 1; The tension coil spring 42 is fixed and hardened, and on the other side, the friction roller 22 is fixed to both ends of the shaft 2a immediately before the lever 40 installed opposite to the knock-up plate so as to rotate about the rotation axis. A cam gear 2 for rotating the lever 40 by means of; And one side of the carriage 50 so as to be simultaneously engaged between the drive gear 1 and the cam gear 2 by an electrical signal when the jam paper is generated, and the power of the motor 30 is cam gear 2. Apparatus for removing jam paper of an inkjet printer, characterized in that consisting of a connecting gear (3) for driving the cam gear by transmitting to. 2. The jam paper removing apparatus of claim 1, wherein a cross section of the shaft (2a) of the cam gear is semicircular to rotate to release the friction roller (22). The method of claim 1, wherein the elastic support for the connecting gear between the side of the carriage 50 and the connecting gear (3) to facilitate insertion of the connecting gear (3) to the cam gear (2) and the drive gear (1). An apparatus for removing jam paper of an inkjet printer, characterized in that a means is provided. 4. The jam paper removing apparatus of claim 3, wherein the elastic means is a compression coil spring (4).