KR100309987B1 - Method and apparatus for print of inkjet printer - Google Patents

Abstract

The present invention relates to a method for printing an inkjet printer and a device therefor, the method comprising: transferring a media from a media stacker to a printing area; and for a color mounted in at least two rows in a media transport direction for color and monochrome printing A method of printing an inkjet printer, the method comprising: transferring an image forming body and a mono forming body to a media printing area, and performing a printing operation while the color forming body and the mono forming body are transferred in a direction perpendicular to the media feeding direction. And a color image forming body for printing in color and a black and white color and a mono image forming body for mono printing at a distance of at least two rows by a predetermined length in the advancing direction of the media. Provide the device.

According to the present invention as described above, the printing speed is improved by simultaneously printing color and monochrome images, and the overall width of the printer is reduced by the length corresponding to twice the width of the print head to realize the miniaturization of the inkjet printer, and the carriage By reducing the contact area between the housing and the carriage shaft to smooth the slide operation of the carriage housing to prevent malfunction due to the overload of the carriage housing.

Description

Printing method of inkjet printer and apparatus therefor {Method and apparatus for print of inkjet printer}

The present invention relates to a printing method and an apparatus of an inkjet printer, and more particularly, to print a color and a black and white image at the same time to improve the printing speed, and to increase the overall width of the printer by a length corresponding to twice the width of the printer head An inkjet printer printing method and apparatus for reducing the size of inkjet printer to achieve miniaturization.

In a typical inkjet printer, as shown in FIG. 1, the carriage shaft 4 is fixed to both side side brackets 2 and 3 of the main frame 1, and the driving and driven pulleys are provided on both upper sides thereof. 5) and 6 are rotatably provided, respectively, and a carriage drive motor 7 is directly connected to the drive pulley 5, and a timing for transferring print head carriages to the drive and driven pulleys 5 and 6. The belt 8 is connected.

Carriage housing 9 is coupled to the carriage shaft 3 to enable the slide operation, the carriage housing 9 is fixed to one side of the timing belt 8, the movement of the timing belt 8 The carriage housing 9 is thus configured to move under the guidance of the carriage shaft 3.

The collar head C and the mono head M are mounted on the carriage housing 9 in a direction parallel to the carriage shaft 3, that is, perpendicular to the conveyance direction of the paper 40.

Both side side brackets (2) and (3) of the main frame (1) are provided with an encoding slit film (10) for head position control so as to be parallel to the moving direction of the carriage housing (9). The predetermined position is provided with a position sensor 11 for detecting the position of the carriage housing 9 while moving along the head slit film 10 for controlling the head position.

The encoding slit film 10 has a light absorbing portion and a light reflecting portion continuously formed at regular intervals, the position sensor 11 is an optical sensor, the light emitted from the position sensor 11 is the encoding slit By detecting the absorption at the light absorbing portion of the film 10 or reflected at the light reflecting portion, it is to control the position of the carriage housing 9 on which the color head C and the mono head M are mounted.

In addition, the head capping means 12 for holding the collar head C and the mono head M when the carriage housing 9 is located at a home position at a predetermined portion of the bottom of the main frame 1. And a cleaning means 13 for cleaning the ink ejection site when the head C for the color and the head M for the mono are out of the head capping means 12 or in the original position.

According to the above-described general inkjet printer, first, as a printing signal is applied from the control unit, the paper 40, that is, the lock body is moved to the inkjet head side by the driving of the normal paper feeding system and stopped in the upper mold area.

After that, when the carriage drive motor 7 is driven, the timing belt 8 is moved by the rotation of the drive pulley 5, and the head C for the collar and the mono is moved in accordance with the movement of the timing belt 8. The carriage housing 9 on which the dragon head M is mounted is moved under the guidance of the carriage shaft 4.

At this time, according to the second head of the carriage housing 9, FIG. 1, the head for color C or the head for mono M is fixed at a predetermined position while slidingly moving until the mono head M is completely out of the printing area. ) Sprays ink to form an image primarily on the paper 40, and completes the printing operation by spraying ink from the remaining color head C and the mono head M, which are required as the first printing. Thereafter, the first head head for the color C returns to the home position completely out of the print start area, thereby completing the one-line printing operation.

The carriage housing 9 cleans the injection portion of the collar head C and the mono head M with the cleaning means 13 by the operation of returning to the home position, and at the same time the collar with the head capping means 13. Capping operations of the head C and the mono head M are made.

As such, when the one-line printing operation is completed, the paper 40 is again conveyed by a predetermined length, that is, by the printing height in the paper feed direction per print of the print head, and then stopped again. The printing operation of the 3... Line is repeatedly performed to complete the printing operation of the paper 40.

On the other hand, the carriage housing 9 is the position is controlled by the normal action of the head slit encoding film 10 for position control and the position sensor (11).

However, in the inkjet printer according to the prior art as described above, since the color head C and the mono head M are arranged in parallel with the carriage shaft 4 in the carriage housing 9, a normal printing operation. When the ink color head C and the mono head M are simultaneously sprayed, the ink spreading phenomenon occurs due to the difference in the drying time of the ink and the lack of the drying time as the ink heads are closely positioned to each other. Penetration or color change due to the color boundary will occur.

In order to solve such a problem, a plurality of prints are carried out to finish printing a specific color, and then ink jetting from the remaining heads is considered. In this case, however, the printing speed is remarkably slowed. do.

In addition, the collar head C and the mono head M are arranged in the carriage housing 9 side by side orthogonal to the paper feeding direction of the paper 40, so that the length of the home position is longer. And twice the width F of each of the widths f of the mono head M, and consequently, the installation space of the second mono head M is required, and on the opposite side, In order for the head M to be completely printed, a space in which the first color head C is installed is required, and as a result, the overall width of the inkjet printer is increased, thereby counteracting the trend of miniaturization of the inkjet printer, and installation of the inkjet printer. There are disadvantages such as increasing space.

On the other hand, the collar head (C) and the mono head (M) in the carriage housing (9) is stored side by side in the horizontal direction is another problem according to the structure that is moved along the carriage shaft (4) the carriage housing (9) ), The contact area between the carriage shaft 4 and the carriage housing 9 is increased during the slide movement operation, which causes an increase in load due to the inflow of foreign matters, which causes the slide operation of the carriage housing 9 to be smooth. By disabling the constant speed movement of the carriage housing 9, a malfunction such as shaking of an image such as fine jitter or poor clarity of the image is caused in the image quality. If the degree is severe, the drive motor (7) is damaged by overload and must be replaced with a new one.

In order to prevent such a malfunction in advance, there is a problem to develop a separate high reliability lubricant to smoothly move the carriage housing 9.

Accordingly, a main object of the present invention is to provide a printing method and apparatus for an inkjet printer capable of simultaneously printing color and monochrome images, thereby improving printing speed.

Another object of the present invention is to provide an inkjet printer printing method and apparatus for minimizing an inkjet printer by reducing the overall width of the printer by a length corresponding to twice the width of the printer head.

It is still another object of the present invention to reduce the contact area between the carriage housing and the carriage shaft to make the slide housing slide more smoothly, thereby preventing the malfunction caused by the overload of the carriage housing. In providing.

1 is a front view showing a state in which the head for the color and the head for mono mounted on the main frame of a general inkjet printer.

Figure 2 is a side cross-sectional view showing a printing apparatus of an ink jet printer according to the present invention.

3 is a front view showing a state in which a color head and a mono head are mounted on a main frame in order to explain the printing apparatus of the inkjet printer according to the present invention.

4A and 4B are reference diagrams for explaining the ink ejection portion of the mono head and the mono head according to the present invention.

<Explanation of symbols for main parts of the drawings>

21; Main frame 24; Carriage shaft

28; Timing belt 29; Carriage housing

C; Collar head M; Head for mono

In one embodiment of the inkjet printer printing method for achieving the above object of the present invention, in the printing method of the inkjet printer to perform printing by spraying color and black and white ink on the media, the media from the media loading unit; Transporting to the print area, and transferring the color glyphs and the mono glyphs mounted in at least two rows in the media transport direction for printing in color and black and white to the media print area, and the color glyphs. There is provided a printing method of an inkjet printer, comprising the step of performing a printing operation while the adult and the monoforms for mono are conveyed in a direction orthogonal to the media conveying direction.

In the printing method of the inkjet printer described above, color printing by the color image forming body is first performed at the beginning of printing, and black and white printing by the image forming body for mono is performed later.

When the initial printing is excluded, at least one color printing by the color image forming body and monochrome printing by the image forming body for mono are performed simultaneously.

In addition, as an embodiment of the inkjet printer printing apparatus for achieving the above object of the present invention, the carriage shaft is connected and fixed to both side brackets of the main frame, the carriage housing is coupled to the carriage shaft slidably, A printing apparatus of an inkjet printer configured to perform printing by injecting color and black and white ink onto a media according to a movement operation of the carriage housing, comprising: an image forming body for color and black and white printing on the carriage housing; There is provided a printing apparatus for an inkjet printer, comprising a mono-formed body formed by mounting at least two rows in the advancing direction of the media.

In the printing apparatus of the inkjet printer, color printing is performed first by arranging the color image forming bodies in a first row, and monochrome printing is performed later by arranging mono image forming bodies in a second row.

According to the present invention as described above, the printing speed is improved by simultaneously printing color and monochrome images, and the overall width of the printer is reduced by the length corresponding to twice the width of the print head to realize the miniaturization of the inkjet printer, and the carriage By reducing the contact area between the housing and the carriage shaft to make the carriage housing slide more smoothly, there are various advantages such as preventing malfunction due to overload of the carriage housing.

Hereinafter, a printing method and an apparatus of the inkjet printer according to the present invention will be described according to the embodiment shown in the accompanying drawings.

Figure 2 is a side sectional view showing a printing apparatus of an inkjet printer according to the present invention, Figure 3 is a state in which the head for the color and the mono head is mounted on the main frame to explain the printing apparatus of the inkjet printer according to the present invention. 4A and 4B are reference diagrams for explaining an ink head of a mono head and a mono head according to the present invention.

As shown in the drawing, in the inkjet printer according to the present invention, the main frame 21 shown in Fig. 3 is erected on a predetermined portion of the inkjet printer main body 20, and both side side brackets of the main frame 21 are placed. Carriage shaft 24 is fixedly connected to 22 and 23, and drive and driven pulleys 25 and 26 are rotatably installed on both upper sides thereof, and the drive pulley 25 has a carriage drive. The motor 27 is directly connected, and the timing belt 28 for conveying the print head carriage is connected to the drive and driven pulleys 25 and 26.

Carriage housing 29 is coupled to the carriage shaft 23 to enable the slide operation, the carriage housing 29 is fixed to one side of the timing belt 28, the movement of the timing belt 28 Accordingly, the carriage housing 29 is configured to move while being guided by the carriage shaft 23.

The head for color C and the head for mono M are mounted in the carriage housing 29 in the conveyance direction of the paper 40. This is a part which forms the core of the printing apparatus of the inkjet printer by this invention, It is preferable to mount the color head C on the back side of the carriage housing 29, and the mono head M on the front side.

That is, the ink ejection operation by the color head C is made first with respect to the paper feeding direction of the paper 40, and the ink ejection operation by the mono head M is performed later.

The reason for this is that the ink jetting operation of the color head C, which is a dye ink having a short drying time and excellent paper permeability, is performed first, and the ink of the mono head M, which is a dye ink having a long drying period and poor paper submersion, is used. It is intended to reduce the overall print time by causing the jetting operation to be late.

According to one embodiment of the inkjet printer printing apparatus according to the present invention as described above, a color head (C) is divided into a plurality of colors to a single ejector head of a single ink reservoir.

However, the color head C is not limited only to the method shown in the drawing, and uses a plurality of head cartridges separated for each color, or a method in which a plurality of injection heads are mounted in one ink reservoir. It may be applied.

A color head C and a mono head M are mounted on the carriage housing 29 in a similar manner to a conventional inkjet printer except for a configuration in which the head 40 for mono is mounted in the conveying direction of the paper 40.

That is, the head slit encoding film 30 for head position control is installed on both side brackets 22 and 23 of the main frame 21 so as to be parallel to the moving direction of the carriage housing 29. The position detecting sensor 31 for detecting the position of the carriage housing 29 moves along the encoding slit film 30 for the head position control.

In addition, the head capping means 32 for holding the collar head (C) and the mono head (M) when the carriage housing 29 is located in the home position at a predetermined portion of the bottom of the main frame 21. And the cleaning means 33 for cleaning the ink ejection site when the head C for the color and the head M for the mono are out of the head capping means 32 or in the original position.

As another structure, as shown in FIG. 2, the paper cassette 34 in which the several sheets of paper 40 are accommodated, and the paper pick-up roller 35 which picks up the paper 40 of the paper cassette 34 are shown. ), A register sensor 36 for detecting a feeding operation of the paper 40, a register roller 37 for aligning and feeding each sheet of paper 40 past the register roller 36, and a color head ( C) and a discharge roller 38 for discharging the paper 40 on which the image is printed by the mono head M, and a paper discharge tray for receiving and storing the paper 40 discharged by the discharge roller 38. It contains (39).

Referring to the printing method of the inkjet printer according to the present invention configured as described above and the operation of the device are as follows.

First, when the paper pickup roller 35 is rotated by the print start command, the paper 40 of the cassette 34 is picked up and transported along a predetermined paper feed path and passes through the register sensor 36 through the register roller 37. The sheet is aligned by the sheet, and the sheet roller 40 is stopped by the register roller 37 in the printing area portion of the color head C tapped on the rear side of the carriage housing 29.

At this time, the head for the color (C) and the mono head (M) in the capping state by the head capping means 32 is sprayed by the ink for a predetermined number of times by the self-injection device to initialize the nozzle, At the same time, the carriage housing 29 is guided by the carriage shaft 24 and driven to the paper 40 by the carriage drive motor 27. As a result, the carriage housing 29 moves out of the home position and the head for the collar ( C) and the foreign matter adhering to the nozzle part surface of the mono head M are removed by the cleaning blade of the cleaning means 33.

The color head C of the carriage housing 29 proceeds with the printing operation starting from a given area or position required by the normal action of the encoding slit film 30 and the position sensor 31.

Thereafter, when the printing operation is performed while moving to the left side of FIG. 3 and returned to the initial position, the paper 40 moves forward by the given length and stops again, and the carriage housing 29 is The printing operation by the color head C is performed while reciprocating while being guided by the carriage shaft 24.

As such, when the color printing operation by the color head C is completed, the paper 40 is moved so that its tip is positioned at the mono head M separated by the distance L systematically fixed to the inkjet printer. By the movement of the distance L, the color ink immediately printed in front of the sheet 40 penetrates into the paper 40 and maintains a somewhat dry state.

At this time, the injection distance L between the color head C and the mono head M is equal to the length p that the color head C can print and print once, and L = K × np (K; constant)

Therefore, as shown in Figs. 4 and 5, if the color head C is separated by a distance p by n colors in the advancing direction of the paper 40 on the single head, the paper ( 40) is transferred by p, and when the mono print area is reached and prints simultaneously, the mono head M prints by p per print, and when mono print is required instead of simultaneous print. It is converted to the mono standard mode per print and prints by H length.

That is, when the paper 40 reaches the mono head M, the head performs the printing operation by ink jetting from the paper 40 at the predetermined position while performing the nozzle initialization cleaning like the head C for the color.

Here, the mono head M is integrally formed in the carriage housing 29 together with the head C for the collar, and slides along one carriage shaft 24, in particular, in the direction of conveyance of the paper 40. Since it is located on the same line, initial nozzle initialization, cleaning, and printing operations are simultaneously performed. Therefore, when the paper 40 reaches the print area of the mono head M, printing is performed simultaneously with the color head C. Will be done.

The printing method of the inkjet printer and the apparatus thereof according to the present invention as described above are not limited to the embodiments described in the detailed description and shown in the drawings. Accordingly, various modifications may be made without departing from the spirit of the inventive concept of the claims of this invention and its dependent claims.

As described above, the method and apparatus for printing an inkjet printer according to the present invention can simultaneously print color and black and white images to improve printing speed, and the overall width of the printer corresponds to twice the printer head width. There is an advantage that the size of the inkjet printer can be reduced in size.

In addition, by reducing the contact area between the carriage housing and the carriage shaft to smooth the slide operation of the carriage housing, there is an effect such as preventing malfunction due to overload of the carriage housing.

Claims (5)

A printing method of an inkjet printer in which color and black and white ink are sprayed onto media to perform printing. Transferring the media from the media stack to the print area; Transferring the color glyphs and the mono glyphs mounted in at least two rows in the media feed direction for printing in color and black and white to the media printing area; A printing method of an inkjet printer, comprising the step of performing a printing operation while the color glyph and the mono glyph are transferred in a direction orthogonal to the media conveyance direction. A printing method of an inkjet printer according to claim 1, wherein color printing with a color image forming body is first performed at the beginning of printing, and black and white printing with a monochrome image forming body is performed later. A printing method of an inkjet printer according to claim 1, wherein at least one color printing by a color image forming body and black and white printing by a monochrome image forming body are simultaneously performed. Carriage shafts are connected and fixed to both side brackets of the main frame, and the carriage housings are slidably coupled to the carriage shafts, so that color and black and white ink are sprayed onto the media according to the movement of the carriage housings to print. In the printing apparatus of an inkjet printer, And a color image forming body for printing in color and black and white and a mono image forming body in the carriage housing in a direction in which at least two rows of media are formed in the carriage housing. 5. The printing apparatus of claim 4, wherein the color image forming body is arranged in a first row to perform color printing first, and the mono image forming body is arranged in a second row to perform black and white printing later.