KR20000014555U - Inkjet printers prevent parking jams in continuous print mode - Google Patents

Abstract

The present invention relates to an inkjet printer, which is interlocked by an interlocking operation of a tractor arm by a switching lever of the continuous paper feed switching device that releases the bite state of the transfer device in the parking mode operation of rewinding the paper after the end of continuous printing. Lifting means for lifting both the discharge roller and the discharge wheel holder to release the bite state of the discharge roller and the discharge wheel is provided with a lifting means for maintaining a proper distance (G) with the discharge roller.

Therefore, in the process of rewinding the continuous paper after completing the continuous printing, the continuous paper can be rewound and parked without being interfered with the discharge device portion heard by the lifting means of the present invention, so that the continuous paper and the sheet paper The present invention is to provide a convenience in using the inkjet printer products, such as very convenient to use when switched.

Description

Inkjet printers prevent parking jams in continuous print mode

The present invention relates to an inkjet printer, and more particularly, to prevent the parking jam occurring in the continuous printing mode by the output roller in which the feed roller rotation speed is set in the continuous paper parking operation. An inkjet printer is configured to automatically release the bite state of the discharge device in the process of switching from continuous printing mode to parking mode.

In general, in case of printing by converting the inkjet printer mainly used in single printing mode to continuous printing mode, the tractor unit is mounted on the paper feeding part of the printer to continuously feed the continuous paper so that continuous paper printing is performed. have.

To this end, the tractor device of the printer is provided with a paper feed switching device for selectively performing the continuous paper sheet feed and sheet paper feed.

The paper feed switching device is to separate the space between the feed roller and the friction roller for smooth feeding operation of the continuous paper, and is coupled together on the arm shaft to interlock with and operate the switching lever provided on one side of the tractor device. The friction roller is separated from the feed roller by rotating the tractor arm and the friction arm and pressing the elastic action part of the pivotable friction holder while one side is pulled by the elastic member about the middle hinge point. It is supposed to be maintained.

Accordingly, the continuous paper is fed, conveyed and discharged by the tractor device and the discharge device, and the discharge device is configured to rotate slightly faster than the rotation speed of the tractor device for smooth feeding operation of the continuous paper. Since the continuous paper is pulled taut in the printing process, the printing is performed.

However, after the printing is finished in the continuous printing mode, an operation of switching to the parking mode is performed immediately. In this case, the continuous paper is held by the discharge roller of the discharge unit and a discharge wheel called "star wheel".

Therefore, when the vehicle is switched to the parking mode, the tractor device and the discharge device have a problem in that the continuous paper may not be properly rewound due to the difference in the rotational speed thereof and cause parking jams.

Accordingly, in the related art, in order to prevent the parking jam phenomenon caused by the difference in the rotational speed in the parking mode, the prior art using each media roller when using a sheet paper and a continuous media using two media rollers having different rotational speeds has been disclosed. However, this configuration caused an inefficient operation problem with the increase of manufacturing cost by using two media rollers.

An object of the present invention is to solve the conventional problems as described above, continuous printing by automatically releasing the bite state of the discharge device unit, such as the transfer unit in the process of switching from the continuous printing mode to the parking mode at the same time An inkjet printer that prevents parking jams in continuous printing mode configured to prevent the parking jam phenomenon occurring in continuous printing mode by the output roller with the feed roller rotation speed set in the continuous paper parking mode in mode. I'm trying to provide.

The present invention for achieving the above object is a parking mode in which a tractor device configured to perform continuous printing in a state of releasing the paper jam state of the transfer unit by the continuous paper feed switching device in the continuous printing mode rewinds the paper after the end of continuous printing. In the inkjet printer configured to prevent the parking jam caused by the difference in the rotational speed between them during the reverse rotation with the discharge device unit during operation, the transfer during the parking mode operation to rewind the paper after the end of continuous printing Lifting both the discharge wheel holder to release the bite state of the discharge roller and the discharge wheel of the discharge device unit is linked by the linking operation of the tractor arm by the switching lever of the continuous paper feed switching device for releasing the bite state of the device unit Lifting means for maintaining the proper distance (G) and the discharge roller is provided It is characterized by.

The lifting means is formed of a lift lever which is formed to be long, the middle of which is hinged to the printer body, and lifts all of the discharge wheel holders by the lever action by the pressing action of the tractor arm linked to the switching lever.

The lift lever comprises: a lever part comprising a contact pressure lever part of which one side is pressed by the tip end of the tractor arm and a support lever part integrally extended to the opposite side of the contact piece part; It is configured to be bent and extended from the end of the support lever portion of the lever to be located on the lower surface of the discharge wheel holder is composed of a lift portion that is fixed to the end of the printer body.

1 is a side cross-sectional view showing the overall configuration of the sheet-printing mode of the inkjet printer according to the present invention,

Figure 2 is a side cross-sectional view showing the parking jam prevention configuration in the continuous printing mode according to the present invention,

3 and 4 is a plan view showing the operation according to the parking jam prevention configuration of the present invention and enlarged cross-sectional side view,

5 is a cross-sectional view taken along the line AA ′ of FIG. 4.

Explanation of symbols on the main parts of the drawings

1: feed roller 2: friction roller

3: feeder unit 4: main frame

7: ink cartridge 8: carriage

9: discharge roller 10: discharge wheel

11: discharge device 12: elastic member

13: Prixhan Holder 14: Badge Wheel Holder

20: tractor unit 30: paper feed switch

31: switching lever 32: arm axis

33: tractor arm 34: friction arm

40: lift lever 41: rattling godfather

42: hinge portion 43: lift portion

44: contact pressure lever portion 45: support lever portion

P: continuous paper

When the present invention is described in more detail based on the accompanying preferred embodiments as follows.

Figure 1 is a side cross-sectional view showing the overall configuration of the sheet printing mode state according to the present invention, Figure 2 is a side view and a plan view showing a configuration in which the parking jam is prevented during the continuous printing mode according to the present invention.

First, the ink jet printer includes a feed roller 1 and a plurality of friction rollers 2 including a feed roller 1 and a main body frame 4, including a paper feeder (not shown) as shown in FIG. The carriage 8 is guided to the shaft 5 and the carriage rail 6 on the front side and reciprocates left and right, and the carriage 8 on which the ink cartridge 7 is mounted and the paper printed by the ink cartridge 7 A discharge device unit 11 composed of a discharge roller 9 and a plurality of discharge wheels 10 for discharge.

When the inkjet printer converts from a single print mode to a continuous print mode and prints the same, the inkjet printer performs a printing operation of the continuous paper P by using the tractor device 20 mounted on the feeder side of the printer.

In addition, the tractor device 20 is provided with a paper feed switching device 30 to be able to selectively perform the continuous paper feed and sheet paper feed.

The paper feed switching device 30 is to allow a smooth feeding operation of the continuous paper (P) by separating the feed roller (1) and the friction roller (2), on one side of the tractor device (20) One side of the resilient member 12 is rotated around the intermediate hinge by rotating the tractor arm 33 and the friction arm 34 coupled together to the arm shaft 32 so as to be interlocked by operating the switching lever 31 provided. The friction roller 2 is configured to perform continuous printing by pressing the elastic action portion of the rotatable friction holder 13 in the pulled state by pressing the elastically acting part 13 while being separated from the feed roller 1. .

In the inkjet printer configured as described above, in the continuous printing mode, the feeding operation of the continuous paper P is performed by the tractor device 20 and the discharge device unit 11 as shown in FIGS. 2 and 3. The device unit 11 is configured to rotate slightly faster than the rotational speed of the tractor device 20 for smooth feeding operation of the continuous paper P, so that the printing is performed while the continuous paper P is pulled tight. After the printing is finished in the continuous printing mode, the continuous paper is discharged from the discharge device unit 11 and the discharge wheel 10, also known as "star wheel", in the process of performing the operation of switching to the parking mode immediately. Due to the state of being bitten by the parking mode, due to the difference in the rotational speed of the tractor device 20 and the discharge device unit 11 is reversed to the parking mode, the continuous paper (P) does not properly rewind, causing the parking jam (parking jam) It is kige.

Therefore, according to the constitution of the present invention, the parking jam is prevented by the biting state of the discharge device unit 11, such as the transfer device unit 3, to switch to the parking mode using the switching lever 31 in the continuous printing mode state. Is configured to release.

That is, the present invention and the switching lever 31 for releasing the bite state of the transfer unit 3 during the parking mode operation to rewind the paper after the end of continuous printing;

By the switching lever 31 is interlocked together by the continuous rotation operation of the friction arm 34 and the tractor arm 33 to rotate around the arm shaft 32 of the discharge device unit 11 Lift both of the discharge wheel holders 14 so as to release the bite of the discharge roller 9 and the discharge wheel 10 so that the discharge wheel 10 maintains a proper distance (G) from the discharge roller (9). Lifting means is provided so that the continuous paper (P) therebetween can be rewound without causing the parking jam.

According to one feature of the present invention, the lifting means is formed long and the hinge portion 42, the middle portion of which is hinged to the printer body frame 4 is formed, the lever rotation operation by the pressing action of the tractor arm 33 It consists of a lift lever 40 for lifting all of the discharge wheel holder 14 at the same time.

The lift lever 40 is formed in a substantially "b" shape, as shown in Figure 3, one side of the body frame 4, the base portion 41 is hinged to the side portion of the main frame 4, and the base portion ( 41 is divided into lift portions 43 for lifting the plurality of friction holders 14 by the underlaying action.

The base portion 41 is rotatable about the hinge portion 42, one side of the contact pressure lever 44 is pressed by the tip portion 33a of the tractor arm 33, the contact pressure lever It consists of a support lever portion 45 formed integrally extended to the opposite side of the portion 44.

The lift part 43 has a bar shape, and is bent and extended from an end of the support lever part 45 of the lever part 41 so as to be positioned on the bottom surface of the discharge wheel holder 14. It is configured to be fixed to the printer body frame (4).

The parking jam prevention structure of the present invention configured as described above operates the switching lever 31 of the paper feed switching device 30 in a continuous printing mode situation so that the front end portion 31a of the switching lever 31 is turned to the tractor arm ( The end 33a of 33 is pressed.

Since the tractor arm 33 is coupled to the friction arm 34 and the arm shaft 32 together, when the tractor arm 33 rotates, the friction arm 34 presses the friction holder 13. Therefore, while the elasticity of the elastic member 12 connected to the friction holder 13 is rotated around the hinge point, the friction roller 2 is discharged from the feed roller 1 at an appropriate interval from the discharge device Continuous printing is performed by the unit 11 and the tractor unit 20.

On the other hand, if the switching lever 31 is further rotated to switch to the parking mode after the continuous printing is finished, the tractor arm 33 is further pressed by the switching lever 31, and the contact pressure of the lever base 41 is increased. The lever 44 is pressed down.

Accordingly, the lever portion 41 is rotated about the hinge portion 42 so that the opposite side support lever portion 45 is rotated upward.

Accordingly, the lift portion 43 extending from the support lever portion 45 and positioned on the lower surface of the discharge wheel holder 14 has an end portion fixed to the printer body frame 4 as shown in FIGS. 4 and 5. The discharge wheel holder 14, which is hinged and rotated at the same time, is lifted at the same time so that a predetermined interval is formed between the discharge wheel holder 10 and the discharge roller 9.

When the parking mode is selected in such a state, the continuous paper P is rewound in a state of being not interfered with the discharge device unit 11 by the reverse operation of the tractor device 20 so that the parking jam is not generated.

According to the above description, according to the configuration in which the parking jam of the present invention is prevented, in the process of rewinding the continuous paper after the continuous printing is completed, the continuous paper does not interfere with the discharge device unit heard by the lifting means of the present invention. The present invention is a useful design that provides convenience in using an inkjet printer, such that it can be rewound and parked so that continuous paper and sheet paper can be used for switching.

Claims (3)

In the continuous printing mode, the tractor unit configured to perform continuous printing by releasing the paper jam state of the feeder unit by the continuous paper feed switching device rotates together with the discharge device unit during the parking mode operation to rewind the paper after the continuous printing ends. In the inkjet printer made to prevent the parking jam caused by the difference in the rotation speed between them in the process, In the parking mode operation of rewinding the paper after the end of continuous printing, the output roller and the discharge wheel of the discharge device unit are interlocked by interlocking operation of the tractor arm by the switching lever of the continuous paper feed switch to release the bite state of the transfer device unit. An inkjet printer of which parking jams are prevented during continuous printing mode, characterized in that lifting means for lifting all of the discharge wheel holders to release the bite is provided to maintain a proper distance (G) with the discharge roller. The lift lever according to claim 1, wherein the lifting means is elongated, the middle of which is hinged to the printer main body, and the lift lever lifts all of the discharge wheel holders by a lever action by the pressing action of the tractor arm linked to the switching lever. Inkjet printer to prevent the parking jam during continuous printing mode, characterized in that consisting of. 3. The lever lever according to claim 2, wherein the lift lever comprises: a lever comprising a contact pressure lever portion, one of which is pressed by the tip end of the tractor arm, and a support lever portion integrally extended to the opposite side of the contact pressure lever portion; Bending and extending from the support lever portion end of the lever to be positioned on the lower surface of the discharge wheel holder is formed by a bar-shaped lift portion that is fixed to the printer end is fixed to the printer body parking jam is prevented in the continuous printing mode Inkjet printer.