KR100395520B1 - Paper cartridge for printer - Google Patents

Abstract

A paper cartridge of a printing apparatus for supplying paper into a printing apparatus main body, comprising: a cartridge body detachably installed in the printing apparatus main body and accommodating the paper to be fed; A main shaft rotatably installed in the cartridge body; A paper alignment lever movably installed on the main shaft to align the received paper according to the size; Pick-up means having a pickup roller for supplying the received paper into the printing apparatus main body while being rotated by the power of the main shaft; A drive unit installed in the cartridge body for rotating the main shaft; And a connector provided on the cartridge body so that the cartridge body is electrically connected to a power supply unit provided on the printing device body when the cartridge body is mounted on the printing device body. The disclosed paper cartridge is detachable from the fritting machine, and is provided with a pair of pickup rollers which are driven by being supplied with power and mounted at the time of mounting, thereby effectively supplying non-standard paper.

Description

Paper cartridge for printer

The present invention relates to a paper cartridge of a printing apparatus, and more particularly, to a paper cartridge of the printing apparatus detachably installed in the main body of the printing apparatus and capable of supplying non-standard paper.

In general, printing apparatuses for personal use, such as inkjet printers, are provided with a paper cartridge fixed to the printing apparatus body.

The paper cartridge is usually installed at an inclined side of the main body of the printing apparatus, and has a structure capable of supplying only one sheet of paper such as A4 sheet. Such a paper cartridge is simply a plate shape in which paper can be loaded, and has a structure that is not separated from the side of the main body. In addition, the paper loaded in the paper cartridge is fed by a pickup roller driven by receiving power from a drive motor installed in the main body of the printing apparatus. The pick-up roller is usually provided, and the paper loaded in the paper cartridge is sequentially separated in the stacking order and supplied into the printing apparatus.

By the way, in the case of the paper cartridge having the above configuration, because it is fixed to the printing device, it is inconvenient during failure and repair. In addition, since only one sheet of A4 is supplied, it becomes cumbersome to supply non-standard sheets of various sizes.

In addition, since the paper is separated and supplied by one pickup roller, there is a problem in that pickup stability and accuracy are deteriorated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and the object of the present invention is to provide a paper cartridge of the printing apparatus, which is detachably installed to the main body of the printing apparatus, and whose structure is improved to enable the supply of non-standard paper. have.

1 is a schematic perspective view showing a state in which a paper cartridge is separated from a printing apparatus according to an embodiment of the present invention.

FIG. 2 is a perspective view showing the paper cartridge shown in FIG. 1. FIG.

FIG. 3 is a schematic cross-sectional view for explaining the paper alignment lever shown in FIG. 2. FIG.

Figure 4a is an excerpt perspective view of the pickup unit shown in FIG.

Figure 4b is a sectional view of the main portion of the pickup unit shown in 4a.

5 is a schematic configuration diagram showing a driving unit for driving the pickup unit shown in FIG.

6 and 7 each schematically illustrate an operation of picking up paper.

<Description of Symbols for Major Parts of Drawings>

10. Cartridge body 18. Tab

20.Main shaft 30.Paper alignment lever

40. Pick-up means 41.41´ .. First and second pick-up units

42. Alignment bar 43. Support bracket

44. Pick-up roller 49. Support shaft

50..Driver 51..Drive motor

60..Connector

The paper cartridge of the printing apparatus according to the present invention for achieving the above object is a paper cartridge of the printing apparatus for supplying paper into the printing apparatus main body, which is detachably installed in the printing apparatus main body, and accommodates the paper to be supplied. A cartridge body; A main shaft rotatably installed on the cartridge body; A paper alignment lever movably installed on the main shaft to align the received paper according to a size; Pick-up means having a pickup roller for supplying the received paper into the main body of the printing device while being rotated by the power of the main shaft; A driving unit installed in the cartridge body to rotate the main shaft; And a connector provided at the cartridge body to be electrically connected to the power supply unit provided at the printing device body when the cartridge body is mounted at the printing device body.

Hereinafter, a paper cartridge of a printing apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings.

1 and 2, a paper cartridge of a printing apparatus according to an embodiment of the present invention includes a paper cartridge main body 10 detachably installed on the main body of the printing apparatus 1 and a cartridge main body 10. The main shaft 20 rotatably installed, a paper alignment lever 30 for aligning the paper accommodated in the cartridge body 10 according to the size, and the received paper are picked up and supplied into the printing device main body 1. Pick-up means 40, a drive unit 50 for rotating the main shaft 20 and a connector 60 provided in the cartridge body (10).

The cartridge body 10 is detachably installed to the mounting portion 2 provided on one side of the printing apparatus main body 1. The cartridge body 10 is treated as a separate product from the paper cassette 3 which is coupled to the printing machine body 1. That is, the paper cassette 3 is provided so that only standard paper such as A4 paper can be loaded. Therefore, when printing on various sizes of paper, that is, non-standard paper, the printer main body 1 in a state in which the non-standard paper is loaded and aligned after mounting the cartridge body 10 to the mounting unit 2. Can be fed into. To this end, the side of the cartridge main body 10 is installed to protrude a guide pin 11 and the guide member 12, etc. for guiding the mounting and detachment with the printing apparatus main body (1). A guide groove 2a corresponding to the guiding pin 11 and the guide member 12 is formed in the printing apparatus main body 10 adjacent to the mounting portion 2. The cartridge body 10 has a shape of a so-called bin-type, and one side is provided with an inclined wall 14 that forms a predetermined obtuse angle with the bottom surface 13. Paper is picked up toward the inclined wall 14 and supplied into the printing apparatus main body 1.

The main shaft 20 is rotatably installed on both side walls 15 of the cartridge body 10. The main shaft 20 is provided so as to intersect at right angles with respect to the paper feeding direction A of the received paper. In addition, the predetermined portion of the main shaft 20 has a non-circular cross-sectional shape, thereby transmitting power to pickup units 41 and 41 ', which will be described later.

The paper alignment lever 30 is installed in the cartridge body 10 so as to be reciprocated along the longitudinal direction of the main shaft 20. At the bottom of the paper alignment lever 30, as shown in FIG. 3, a projection portion 31 corresponding to the projection string 13a formed on the bottom surface 13 of the cartridge body 10 is formed. The protrusion rows 13a are formed to be parallel to the main shaft 20. The paper alignment lever 30 is limited in free position movement because the protrusions 31 are caught by the protrusion rows 13a in a state where the predetermined distance is moved to align the sheets.

The pick-up means 40 aligns the postures of the first and second pick-up units 41 and 41 'rotatably with respect to the main shaft 20 and the pick-up units 41 and 41'. It has a posture alignment bar 42 for.

The pickup units 41 and 41 ′ are installed to be spaced apart from each other by a predetermined distance, among which the first pickup unit 41 is movably installed along the main shaft 20 and the second pickup unit 41 ′. ) Is fixedly installed at one end of the main shaft (20). On the other hand, since each pickup unit (41) (41 ') has a substantially identical configuration, it will be described with reference to only the first pickup unit 41 in the present embodiment. Here, the first pickup unit 41 is moved together with the paper alignment lever 30. To this end, the paper alignment lever 30 and the first pickup unit 41 are connected by the torsion spring 33. In addition, the torsion spring 33 elastically presses the first pick-up unit 41 toward the paper, that is, the pickup roller 44 installed at the tip of the first pick-up unit 41 is in contact with the paper. 2 to 4b, the first pick-up unit 41 is installed at the other end of the support bracket 43 and one end of the support bracket 43, one end of which is movably installed on the main shaft 20. And a power transmission unit 45 for transmitting the rotational force of the main shaft 20 to the pickup roller 44.

The support bracket 43 is installed to surround the power transmission part 45 formed of a gear train, and a guide hole 43a to which the posture alignment bar 42 is slidably coupled is formed at an upper portion thereof.

Further, each of the pickup units 41 and 41 'is held in a state of sagging by the spring force of the torsion spring 33 and the weight thereof toward the pickup roller 44 side. Therefore, when storing paper in the cartridge body 10, it is preferable that a lever 25 for lifting the pickup units 41 and 41 'is provided in the second pickup unit 41'. The lever 25 is coupled to the support bracket of the second pickup unit 41 ′ so as to rotate about the main shaft 20.

The power transmission part 45 includes a first gear 46 installed on the main shaft 20 and rotated together with a second gear 47 coaxially installed with the pickup roller 44, and the first gear 46 rotates together. The third and fourth gears 48a and 48b for transmitting power of the first gear 46 to the second gear 47 and the support bracket 43 are rotatable to rotate the second gear 47. And a clutch for selectively intermittently controlling power transmission from the second gear 47 to the pickup roller 44 in the rotational direction. The first gear 46 is movable along the main shaft 20 and installed to rotate together. In addition, the first gear 46 has a hub 46a that protrudes to one side and rotatably supports the support bracket 43. As shown in FIG. 2, the hub 46a protrudes outward of the support bracket 43, and the torsion spring 33 is wound and supported.

The second gear 47 is rotatably supported by the support shaft 49, and is rotated by the power of the first gear 46 through the third and fourth gears 48a and 48b. Each of the gears 48a and 48b is rotatably supported inside the support bracket 43. The support shaft 49 is rotatably supported by the pickup roller 44 together with the second gear 47.

The clutch unit transmits power to the pickup roller 44 only when the second gear 47 is rotated in the pick-up direction, and controls the power when rotated in the opposite direction A1. The clutch portion protrudes to one side of the second gear 47 and extends from one side of the pickup roller 44 so as to face and face the end of the protrusion 47a and the protrusion 47a surrounding the support shaft 49. A spring S is provided to surround the hub 44a and the protrusion 47a and the hub 44a together. The spring S is a coil spring, the diameter of which is smaller than the outer diameter of the protrusion 47a and the hub 44a. Therefore, when the second gear 47 is rotated in the pick-up direction A, the spring S is dried to clamp the protrusion 47a and the hub 44a. Therefore, the hub 44a and the protrusion 47a can be rotated together, so that the pickup roller 44 can be rotated. On the contrary, when the second gear 47 is rotated in the opposite direction of the pick-up direction, the curled state of the spring 49 is released to prevent power transmission between the protrusion 47a and the hub 44a. Here, the hub 44a is formed integrally from the body of the pickup roller 44, and an elastic layer 44b made of rubber material on the outer circumference of the pickup roller 44 to increase the frictional efficiency with the paper to increase pickup efficiency. Is provided.

As shown in FIG. 5, the driving unit 50 rotates the main shaft 20, and drives the driving motor 51 installed in the cartridge body 10 and the power of the driving motor 51. It is provided with a power transmission unit for transmitting to the main shaft (20). The power transmission unit includes a driven gear 53 coupled to one end of the main shaft 20, and a plurality of connecting gears for gear-connecting the drive gear 51a of the drive motor 51 and the driven gear 53. 53,54,55,56. Each of the connecting gears 53, 54, 55, and 56 is rotatably installed on one side of the cartridge body 10.

The drive motor 51 is electrically connected to the connector 60 in an assembled state in the cartridge body 10. As shown in FIG. 2, the connector 60 is installed on the support bracket 17 installed on the side of the cartridge body 10. As shown in Fig. 1, the connector 60 is connected to the connector engaging portion 4 provided around the mounting portion 2a of the main body 1 when the cartridge main body 10 is mounted on the main body 1 of the printing apparatus. Inserted and combined. The connector coupling part 4 is provided with terminals (not shown) that are complementarily coupled to the connector 60 to supply power. Therefore, the drive motor 51 is driven by the power supplied from the printing apparatus main body 1 through the connector 60, thereby controlling the rotational drive of the main shaft 20 and the drive of the pickup roller 44.

In addition, it is preferable to further include a paper sorting means for providing a frictional force to the front end of the paper picked up by the pickup roller 44 of the plurality of sheets accommodated in the cartridge body 10 to be classified and supplied sheet by sheet.

As shown in FIG. 2, the sheet sorting means is provided with a plurality of tabs 18 provided at predetermined intervals on the inclined wall 14 of the cartridge body 10. As shown in FIG. As shown in FIG. 6, the tab 14 is provided at an obtuse angle with respect to the bottom wall 13 of the cartridge body 10, and a plurality of protrusions 18a protrude from the surface thereof. The protrusion 18a provides a predetermined resistance force, that is, a frictional force at the tip of the paper P, so that the protrusions 18a can be classified and supplied one by one. Here, the protrusion 18a preferably has an inclined surface so as to have an angle θ of about 22 ° to 25 ° before and after the pickup direction with respect to the surface of the tab 18. Therefore, it is possible to effectively classify the paper P while preventing the tip of the paper P in contact with the projection 18a from slipping or creasing.

The operation and effect of the paper cartridge of the printing apparatus according to the embodiment of the present invention having the above configuration will be described in detail as follows.

First, as shown in FIG. 1, the cartridge body 10 is inserted into the mounting portion 2 of the printing apparatus 1 to be mounted. Then, as shown in Figure 7, the connector 60 is coupled to the connector coupling portion 4 of the printing device main body 1 is electrically connected. In this state, the paper P of a predetermined size is loaded in the cartridge body 10, and the paper alignment lever 30 is moved as shown by the solid line to support and align the side of the paper P. In this case, as shown in Fig. 6, the pickup roller 44 is in contact with the paper P loaded on the uppermost side.

When a printing command is input in the above state, power is applied through the connector 60 to drive the driving motor 51 from the printing apparatus main body 1. When the driving motor 51 is driven by the applied power, as shown in FIG. 3, the rotational force is transmitted to the main shaft 20 via the power transmission unit 50. The power of the main shaft 20 is transmitted to the second gear 47 via the first gear 46 and the respective gears 48a and 48b. At this time, as shown in FIG. 4B, the spring S coupled to the protrusion 47a is dried by the rotational force in the pick-up direction A to clamp the protrusion 47a and the hub 44a. Then, the hub 44a is rotated together with the protrusion 47a to rotate the pickup roller 44.

As described above, the pickup rollers 44 of the pickup units 41 and 41 'are simultaneously rotated to push the uppermost paper P in the pickup direction A as shown in FIG. . The paper P to be pushed is subjected to resistance by being caught by the projection 18a of the tab 18, and when subjected to a force of a predetermined size or more, the paper P is separated from the projection 18a and fed into a sheet. In this way, since both sides of the paper P are pushed and fed at the same time by using the pair of pickup rollers 44, the paper P can be stably supplied while preventing the paper P from being skewed or shaken. Therefore, it is possible to prevent errors such as occurrence of paper jams and abnormal printing of images.

In addition, since the interval between the pick-up rollers 44 can be appropriately adjusted to fit non-standard paper having different sizes, it is possible to secure pickup stability of a predetermined level or higher regardless of the type of paper.

In addition, since the paper cartridge according to the present embodiment is a bin type and can be attached and detached to the printing machine base 1, it is easy to troubleshoot and replace, and can be purchased and used as an option if necessary, thereby widening the user's selection. There is an advantage.

As described above, the paper cartridge of the printing apparatus according to the present invention is provided as an option and attached to and detached from the main body of the printing apparatus according to a user's selection, which is useful for printing apparatuses capable of printing on high-quality yarn, that is, non-standard paper. Can be used.

In addition, by providing a pair of pick-up rollers, pick-up can be performed by applying force to both ends of the paper to be fed, thereby preventing slippage and pick-up errors, thereby improving pick-up safety.

In addition, by adopting a tab having a plurality of protrusions as the paper sorting means, it is possible to prevent damage such as the tip of the paper being wrinkled or stamped, and since the protrusions are not easily worn as in the conventional friction pad, the paper sorting is almost semipermanently. The advantage is that you can work.

Claims (9)

In the paper cartridge of the printing machine for feeding paper into the printing machine body, A cartridge body detachably installed in the main body of the printing apparatus and accommodating paper to be fed; A main shaft rotatably installed on the cartridge body; A paper alignment lever movably installed on the main shaft to align the received paper according to a size; A pair of pickup means for supporting the pickup rollers for supplying the received paper into the printing apparatus main body while being rotated by the power of the main shaft, the pair of pickup means being movable on the main shaft; A driving unit installed in the cartridge body to rotate the main shaft; And And a connector provided on the cartridge body so that the cartridge body is electrically connected to a power supply unit provided in the printing device body when the cartridge body is mounted on the printing device body. The method of claim 1, wherein the pickup means, A pair of first and first supports having a first end rotatably supported by the main shaft and a second end having a support bracket on which the pickup roller is rotatably supported, and a power transmission unit for transmitting the rotational force of the main shaft to the pickup roller; Two pickup units; Includes; posture alignment bar connected to the support bracket of each pickup unit to maintain a constant posture of each pickup unit; Wherein each of the pickup units is installed at predetermined intervals in a direction crossing the pickup direction of the paper. The method of claim 2, wherein the power transmission unit, A first gear installed at the main shaft and rotating together with a hub supporting the support bracket freely rotatable; A second gear installed on the support bracket and rotating by receiving power of the first gear by at least one or more connecting gears, the second gear being installed coaxially with the pickup roller; A support shaft installed on the support bracket to rotatably support the second gear and the pickup roller; And And a clutch unit configured to selectively transmit the driving force of the second gear to the pickup roller so that the pickup roller can be rotated only in the pickup direction. The method of claim 3, wherein the clutch unit, A protrusion protruding from one side of the second gear to surround an outer circumference of the support shaft; A hub extending from one side of the pickup roller so as to face one end of the protrusion; And a spring installed to surround the protrusion and the hub, the spring being dried when the second gear is rotated in the pick-up direction and clamped so that the protrusion and the hub are rotated together. The method according to claim 2, wherein At least one of the first and second pick-up unit is a paper cartridge of the printing apparatus, characterized in that installed along the main shaft to move with the paper alignment lever. The method of claim 1, wherein the driving unit, A drive motor installed in the cartridge body and electrically connected to the connector; And a power transmission unit installed in the cartridge main body and transmitting a driving force of the driving motor to the main shaft. The method of claim 1, And a paper sorting means for providing a resistance to the front end of the paper picked up by the pick-up roller among the plurality of sheets of paper accommodated in the cartridge body to sort the sheets one by one. The method of claim 7, wherein the paper sorting means, A plurality of cartridges are provided at predetermined intervals on an inner surface of the cartridge body so as to form an obtuse angle with respect to the bottom surface of the cartridge body, and each surface includes a tab for separating paper having a plurality of protrusions protruding from each other. The paper cartridge of the printing machine. 9. The paper cartridge of a printing machine according to claim 8, wherein the protrusion has inclined surfaces that make an angle of about 22 to 25 degrees with respect to the surface of the tab before and after the pick-up direction.