JP2012236425A - Recording method, recording apparatus, and operation control program - Google Patents

Recording method, recording apparatus, and operation control program Download PDF

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Publication number
JP2012236425A
JP2012236425A JP2012197083A JP2012197083A JP2012236425A JP 2012236425 A JP2012236425 A JP 2012236425A JP 2012197083 A JP2012197083 A JP 2012197083A JP 2012197083 A JP2012197083 A JP 2012197083A JP 2012236425 A JP2012236425 A JP 2012236425A
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Prior art keywords
layer
nozzle group
image
recording
print
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JP2012197083A
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JP2012236425A5 (en
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Tsuyoshi Sano
強 佐野
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Seiko Epson Corp
セイコーエプソン株式会社
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Priority to JP2012197083A priority Critical patent/JP2012236425A/en
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Abstract

PROBLEM TO BE SOLVED: To provide a recording apparatus, recording method, and operation control program, capable of outputting the result of recording by viewing only the image of each surface, even if viewed either from a surface or backside, without causing transmission of the images.SOLUTION: This is a printing method for forming an image by attaching ink to a transparent film P by using a printer 20 having a printing head 36 divided into a first nozzle group A, second nozzle group B, and third nozzle group C in a secondary scanning direction. This method includes: a step S15 of discharging color ink from the first nozzle group A to the transparent film P to print a first layer X; and a step S17 of discharging white ink from the second nozzle group B to print a second blocking layer that blocks the first layer X ; and a step S19 of discharging color ink from the third nozzle group C to print a third layer Z over the second blocking layer.

Description

The present invention relates to a recording method, a recording apparatus, and an operation control program for executing a recording process by discharging a recording material from a nozzle of a recording head.

2. Related Art Inkjet printers are known that print an image including characters and symbols for advertising on a medium such as a transparent window glass or film.

Even if only the image is directly printed directly on the transparent media, the intermediate color with high brightness such as gray other than the high density color such as red, blue, yellow, black, etc. of the image passes through the transparent media. It is blocked by the light entering the image and cannot be expressed accurately. For this reason, various methods have been proposed for printing an image such as a color image on a transparent medium by way of a ground color layer.

Patent Document 1 describes a printer in which a subhead for image printing and a subhead for ground color layer printing are arranged at the front and rear of the inkjet head in the X direction.
The ground color layer is printed on the medium by ink droplets ejected from the sub head for ground color layer printing that reciprocates in the Y direction above the medium. Next, the medium is moved forward in the X direction, and after the image print subhead reaches above the ground color layer printed on the medium, the image print subhead is moved back and forth in the Y direction above the ground color layer. An image is printed on the surface of the ground color layer by ink droplets ejected from the surface.

As described above, the printer described in Patent Document 1 prints an image forming layer superimposed on a ground color layer or an undercoat layer for fixing an image, and observes an image from the image forming layer only. Only. That is, it assumes single-sided printing.

On the other hand, some inkjet printers perform double-sided printing. For example, Patent Document 2 uses temperature detection means in the vicinity of a head that is mounted on an ink jet printer as a standard for ink ejection control, and recognizes the temperature detected by the temperature detection means as an environmental temperature under predetermined conditions. The waiting time after the end of the first printing surface is made variable in accordance with the environmental temperature to secure a necessary and sufficient ink fixing time, and then printing on the second printing surface is started.
When the recording medium waits for a predetermined time after recording on the surface, the ink jet printer starts reverse feeding of the recording medium, is guided by the switching member, and is conveyed along the loop-shaped reversing path in the reversing mechanism. In the state that is inverted, it is supplied again to the recording unit and the back side is recorded.

JP 2007-50555 A JP 2007-152736 A

As described above, in the double-sided printing by the ink jet printer described in Patent Document 2, the front side printing is performed on the first printing surface, and then the back side printing is performed on the second printing surface after a predetermined time.
Since printing is performed on the front and back sides of the recording sheet, it is difficult to perform double-sided printing on a recording sheet in which the image on the front side and the image on the back side are transmitted through each other.

The present invention has been made in order to solve the above-described problems, and the images on each surface can be viewed from each surface without transmitting each other's images when viewed from either the front surface or the back surface of the recording medium. An object of the present invention is to provide a recording apparatus, a recording method, and an operation control program that output a recording result that can be recorded.

The present invention that can solve the above-described problems uses a recording apparatus that includes a recording head divided into a first nozzle group, a second nozzle group, and a third nozzle group in the conveyance direction of the recording medium. A recording method for forming a printed image by attaching droplets on a recording medium,
A step of ejecting a recording material from the first nozzle group onto a recording medium observable from the opposite side of the print image forming surface to form a first print image; and a shielding material from the second nozzle group. Forming a second print image that shields the first print image, and ejecting the recording material from the third nozzle group to form a third print image on the second print image. And a step of performing.

According to the above configuration, the first print image, the second print image that shields the first print image, and the second print from one surface of the recording medium that can be observed from the opposite side of the print image forming surface. Since the third print image is formed over the image, the first print image can be visually recognized through the recording medium when viewed from the other surface where the print image is not formed. On the other hand, from the surface on which the print image is formed, the first print image shielded by the second print image cannot be viewed, but the last superimposed third print image can be viewed. Therefore, a print result that allows the print image on each surface to be visually recognized from each surface is output without transmitting the print image to each other when viewed from either the front surface or the back surface of the recording medium. That is, the first print image and the third print image are formed only on one surface.
The printed image can be visually recognized from both sides of the recording medium, and a recording result as if double-sided recording has been performed can be output.

In the recording method of the present invention, white ink is used as the shielding material.

According to the above configuration, since white has a property of reflecting light of all wavelengths, when the white ink is used as a shielding material, when the light transmitted through the recording medium hits the first print image, the first printing is performed. The light of the colors that make up the image is reflected. Further, when light is incident from the third print image side, the light of the color constituting the third print image is reflected. That is, since the light of the colors constituting the first print image and the third print image are reflected from each other, it is possible to obtain a recording result with good coloring even when observed from either the front or back of the recording medium.

The recording data for forming the first print image and the recording data for forming the third print image are inverted data, and the method includes generating the inverted data.

According to the above configuration, data that is reversed with respect to each other is generated, so that the first print image viewed through the recording medium and the third print image viewed from the surface on which the image is formed are viewed as the same print image. be able to. That is, it is possible to output a recording result as if the same print image was recorded on both sides.

In addition, the present invention that can solve the above-described problems includes a recording head divided into a first nozzle group, a second nozzle group, and a third nozzle group in the conveyance direction of the recording medium,
A recording material is ejected from the first nozzle group onto a recording medium that can be observed from the opposite side of the print image forming surface to form a first print image, and a shielding material is ejected from the second nozzle group. A recording control unit that forms a second print image that shields the first print image, ejects the recording material from the third nozzle group, and forms a third print image on the second print image. And a recording apparatus characterized by comprising:

According to the above configuration, a print result that allows the print image of each surface to be visually recognized from each surface is output without transmitting the print image to each other when viewed from either the front surface or the back surface of the recording medium.

In addition, the present invention that can solve the above-described problem is a recording apparatus including a recording head divided into a first nozzle group, a second nozzle group, and a third nozzle group in the conveyance direction of the recording medium. An operation control program,
A step of ejecting a recording material from the first nozzle group onto a recording medium observable from the opposite side of the print image forming surface to form a first print image; and a shielding material from the second nozzle group. Forming a second print image that shields the first print image, and ejecting the recording material from the third nozzle group to form a third print image on the second print image. And a step of causing a computer included in the recording apparatus to execute.

According to the above configuration, only by installing the operation control program in the recording apparatus, the print images of each surface are not transmitted through each surface without seeing each other's print image when viewed from either the front surface or the back surface of the recording medium. It is possible to provide a recording apparatus that outputs a recording result that allows visual recognition.

FIG. 2 is a schematic perspective view illustrating main components of the printer according to the embodiment. FIG. 2 is a block diagram illustrating an electrical configuration of the printer illustrated in FIG. 1. It is the figure which showed typically a mode that a printing head scans in a main scanning direction, and a transparent film conveys in a subscanning direction. It is the figure which showed typically a mode that a printing head scans in a main scanning direction, and a transparent film conveys in a subscanning direction. 6 is a flowchart for explaining a printing method using a printer. It is the schematic diagram which observed the image printed on the transparent sheet from the front and back each surface. (A) is the figure observed from the printing surface, (b) is the figure observed from the arrow Q direction of (a). It is the schematic diagram which observed the image printed on the transparent sheet from the front and back each surface, when not reversing image data. (A) is the figure observed from the printing surface, (b) is the figure observed from the arrow Q direction of (a). It is the schematic diagram which observed the image printed on the transparent sheet from the front and back each surface, when the 2nd shielding layer was printed only in 1 part. (A) is the figure observed from the printing surface, (b) is the figure observed from the arrow Q direction of (a).

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a preferred embodiment of a recording apparatus according to the invention will be described in detail with reference to the drawings. An ink jet printer (hereinafter referred to as “printer”) will be described as an example of the recording apparatus. FIG. 1 is a schematic perspective view showing the main components of the printer of this embodiment, and FIG.
FIG. 2 is a block diagram showing an electrical configuration of the printer shown in FIG. 1.

The printer 20 shown in FIG. 1 includes a paper stacker 22, a paper feed roller 24 driven by a step motor (not shown), a platen 26, a carriage 28, a carriage motor 30, and a traction driven by the carriage motor 30. A belt 32 and a guide rail 34 for guiding the scanning of the carriage 28 are provided. A print head 36 (recording head) having a large number of nozzles is mounted on the carriage 28.

The printing paper P (recording medium) is taken up from the paper stacker 22 by a paper feed roller 24 and fed on the surface of the platen 26 in the sub scanning direction orthogonal to the main scanning direction of the print head. In the present embodiment, the printing paper P is a transparent substrate that transmits light, such as a transparent film. The carriage 28 is pulled by a pulling belt 32 driven by a carriage motor 30 and moves in the main scanning direction along the guide rail 34.

As shown in FIG. 2, the printer 20 includes a reception buffer memory 50 that receives a signal supplied from the host computer 90, an image buffer 54 that stores image data, and a system controller 54 that controls the operation of the entire printer 20. A recording control unit), a main memory 52, and an EEPROM 53. Various operations of the printer 20 are realized by reading the firmware stored in the EEPROM 53 into the main memory 52 and executing it.

The system controller 51 further includes a main scanning drive circuit 61 that drives the carriage motor 30, a sub-scanning drive circuit 62 that drives the paper feed motor 31, a head drive circuit 63 that drives the print head 36, and left and right image data. Is connected to an image data inversion circuit for inverting the image data. The sub-scanning drive circuit 62, the paper feed motor 31, and the paper feed roller 24 constitute a paper feed mechanism. The system controller 51 includes a main scanning drive circuit 61, a sub-scanning drive circuit 62, and an image data inversion circuit according to various commands included in the print data received by the reception buffer memory 50 and setting conditions written in the EEPROM 53 in advance. 58 is controlled.

For example, when printing is set to print a high-quality image, a so-called interlace method is used in which an image is printed while the raster is intermittently formed in the sub-scanning direction by the main scanning driving circuit 61 and the sub-scanning driving circuit 62. Print. It is also possible to perform so-called overlap type printing in which printing is performed by driving nozzles forming one raster at intermittent timing.

The image buffer 54 of the present embodiment includes a first layer data development unit 55 that develops image data to be printed as the first layer (first print image) of the transparent film P, and a second layer of the transparent film P.
The second shielding layer data development unit 56 where image data printed as a shielding layer (second printed image) is developed, and the image data printed as the third layer (third printing image) of the transparent film P A third layer data expansion unit 57 to be expanded. Of the print data received by the reception buffer memory 50, the image data is expanded as it is in the third layer data expansion unit 57. The second shielding layer data development unit 56 develops shielding data for shielding the first layer. The shielding data may be generated by the printer driver 91 of the host computer 90 and transmitted to the printer 20, or may be stored in advance in a storage unit (not shown) on the printer 20 side. In the first layer data expansion unit 57, inverted image data obtained by inverting the left and right of the image data received from the host computer 90 is expanded.

The image data inversion circuit 58 inverts the left and right of the image data received by the reception buffer memory 50 and develops it in the first layer data development unit 55.

3 and 4 are diagrams schematically showing how the print head scans in the main scanning direction and the transparent film is conveyed in the sub-scanning direction.
As shown in FIGS. 3 and 4, the nozzles of the print head 36 included in the printer 20 of the present embodiment are the first nozzle group A, the second nozzle group B, and the third nozzle in the sub-scanning direction (recording medium conveyance direction). It is divided into three regions of groups.
The first nozzle group A and the third nozzle group C are color ink nozzle groups, and eject Y (yellow), M (magenta), C (cyan), and K (black) ink from the left. The second nozzle group B is a nozzle group that discharges white ink used as a shielding material.

The head drive circuit 63 applies an ejection signal to each corresponding nozzle of the first nozzle group A based on the reverse image data developed in the first layer data development unit 55 and is developed in the second shielding layer data development unit 56. A discharge signal is applied to each corresponding nozzle in the second nozzle group B based on the shield layer data, and discharge is performed to each corresponding nozzle in the third nozzle group C based on the image data developed in the third layer data development unit 57. Apply a signal.

That is, the printer 20 of the present embodiment prints the first layer on the transparent film P by discharging the color ink from the first nozzle group A based on the image data, and the second layer based on the shielding data.
The second shielding layer that shields the first layer is ejected by ejecting white ink from the nozzle group B, and the color ink is ejected from the third nozzle group C based on the reverse image data, and is superimposed on the second shielding layer. Print the layer.

Hereinafter, a printing method using the printer 20 will be described with reference to FIGS. 3 to 5.
FIG. 5 is a flowchart for explaining a printing method using a printer.
When print data generated by the printer driver 91 is transmitted from the host computer 90 to the printer 20, first, the print data is temporarily stored in the reception buffer memory 50. The print data is sequentially read from the reception buffer memory 50, and if it is various command data, the system controller 51 analyzes the command.

If it is image data (step S11: Yes), it is developed in the image buffer 54. Here, the received image data is expanded as it is in the third layer data expansion unit 57 (step S12). On the other hand, when the system controller 51 reads a command for instructing double-sided printing or a double-sided printing setting in advance, the image data inversion circuit 58 is driven to invert the received image data, and the inverted image data is developed into the first layer data. Expand to the unit 55 (step S1
3).

Further, the system controller 51 reads the shielding layer data from a storage unit (not shown) and develops it in the second shielding layer data development unit 56. Here, the shielding layer data is data that shields the reverse image data developed in the first layer data development unit 55 and covers the entire printable area.
That is, it is data for applying ejection signals to all nozzles of the second nozzle group B and ejecting white ink from all nozzles.
Note that the shielding layer data is not necessarily data covering the entire printable area, and may be the same data as the reverse image data. In this case, the same data as the reverse image data is developed in the second shielding layer data development unit 56, white ink is ejected from some nozzles of the second nozzle group B, and only that portion is shielded.

When there is a printing opportunity (step S14: Yes), the system controller 51 drives the sub-scanning direction driving circuit 62 to operate the paper feed motor 31 and starts the transparent film P at the printing start position. Further, the main scanning direction driving circuit 61 and the head driving circuit 63 are driven to operate the carriage motor 30 to move the print head 36 in the main scanning direction.
Based on the reverse image data developed in the first layer data development unit 55, the color ink is ejected from the corresponding nozzle of the first nozzle group A to start the printing of the first layer X1 (step S15, FIG. 3A). reference).

Next, the paper feed motor 31 is driven to transport the transparent film by the height of the first nozzle group A (here, about one third of the height of the print head 36) (step S16). That is,
The transparent film P is transported to the place where the second nozzle group B is located above the first layer X1. The print head 36 is moved in the main scanning direction, and the second shielding layer data development unit 56 is moved.
The white ink is ejected from the corresponding nozzles of the second nozzle group B based on the shielding layer data developed on the second layer, and printing on the second shielding layer Y1 is started so as to overlap the first layer X1. At the same time, the first layer X2 is printed by the first nozzle group A (see step S17, FIG. 3B).

The paper feed motor 31 is driven to convey the transparent film by about one third of the height of the print head 36 (step S18). That is, the transparent film P is conveyed until the third nozzle group C is located above the second shielding layer Y1. Then, the print head 36 is moved in the main scanning direction, and the color ink is ejected from the corresponding nozzles of the third nozzle group C based on the image data developed in the third layer data development unit 57, so that the second shielding layer Y1. And printing of the third layer Z1 is started. At the same time, the first layer X3 is printed by the first nozzle group A, and the second shielding layer Y2 is printed by the second nozzle group B (see step S19, FIG. 4A).

If the printing process of the image data developed in each data development unit 55, 56, 57 has not been completed (step S20: No), the process returns to step S18, and the paper feed motor 31 is driven again to increase the height of the print head 36. The transparent film is transported by about one third. That is, the transparent film P is conveyed until the third nozzle group C is positioned above the second shielding layer Y2. Then, the print head 36 is moved in the main scanning direction, and color ink is ejected from the corresponding nozzles of the third nozzle group C based on the image data developed in the third layer data developing unit 57, thereby causing the second shielding layer Y2. And printing of the third layer Z2 is started. At the same time, the first layer X4 is printed by the first nozzle group A, and the second shielding layer Y3 is printed by the second nozzle group B (see step S19, FIG. 4B).

As described above, step S18, step S19, and step S20 are repeatedly executed, and when the print processing of the image data developed in the data development units 55, 56, and 57 is completed (step S20: Yes), the transparent film 21 is removed. It discharges outside (step S21).

FIG. 6 is a schematic view of an image printed on the transparent sheet P observed from the front and back surfaces. (A) is the figure observed from the printing surface, (b) is the figure observed from the arrow Q direction of (a). The transparent film P printed by the printing method of this embodiment has a second shielding between the first layer X (X1 to X3) and the third layer Z (Z1 to Z3) as shown in FIG. Since the layer Y is formed, the first layer X and the third layer Z are not seen through each other, and a printed matter is obtained as if double-sided printing was performed even though the printing process was performed only on one side. be able to.

Further, since the image data inversion circuit 58 generates inverted data, the first layer X observed through the transparent film P (from the arrow Q direction) and the third layer Z observed from the surface subjected to the printing process are: It can be visually recognized as the same image. That is, it is possible to obtain a print result as if the same image was printed on both sides.

As described above, according to the present embodiment, the first layer X, the second shielding layer Y that shields the first layer X, and the second shielding layer Y are stacked on the one surface of the transparent film P to overlap the third layer Z. Therefore, the first layer X can be visually recognized through the transparent film P when viewed from the other side where printing is not performed.
On the other hand, from the surface subjected to the printing process, the first layer X shielded by the second shielding layer Y cannot be visually recognized, but the last superimposed third layer Z can be visually recognized. Therefore, the first layer X and the third layer Z can be visually recognized from both sides of the transparent film P only by performing the printing process on one side, and the printing result is output as if double-sided printing has been performed. can do.

In addition, since the white ink employed in the present embodiment has a property of reflecting light of all wavelengths, when the light transmitted through the transparent film P hits the first layer X, the light of the color constituting the first layer is reflected. The Further, when light enters from the third layer side, the light of the color constituting the third layer Z is reflected. That is, since the light of the color which comprises a 1st layer and a 3rd layer mutually reflects, even if it observes from the front and back of the transparent film P, the printing result with a good coloring can be obtained.

In the present embodiment, the image data inversion circuit 58 has been described as generating inverted image data obtained by inverting the left and right of the received image data. However, a configuration in which the image data is not inverted may be employed. FIG. 7 is a schematic diagram in which the image printed on the transparent sheet P is observed from the front and back surfaces when the image data is not inverted. (A) is the figure observed from the printing surface, (b
) Is a view observed from the direction of arrow Q in (a).
Also in this case, the printed transparent film P has a first layer X (X1 to X as shown in FIG.
3) and the third layer Z (Z1 to Z3), since the second shielding layer Y is formed, the first layer X and the third layer
Layer Z does not show through each other. However, as shown in FIG.
Since the image data is not reversed with respect to the layer Z, the first layer X observed through the transparent film and the third layer Z observed from the surface subjected to the printing process can be visually recognized as reversed right and left images.

Furthermore, in the said embodiment, although the 2nd shielding layer Y was set as the structure printed on the front surface of the transparent film P, it can also be comprised so that only the part actually printed may be shielded. FIG. 8 is a schematic diagram in which the image printed on the transparent sheet P is observed from the front and back surfaces when the second shielding layer is printed on only one part. (A) is the figure observed from the printing surface, (b) is (a).
It is the figure observed from the arrow Q direction.
Also in this case, the printed transparent film P has the first layer X (X1 to X1) as shown in FIG.
X3) and the third layer Z (Z1 to Z3) are formed with the second shielding layers Y1, Y2, and Y3, so that the first layer X and the third layer Z are not seen through each other. However, since the first layer X and the third layer Z are not inverted image data as shown in FIG. 5B, the first layer X observed through the transparent film and the first layer X observed from the surface subjected to the printing process are used. The three-layer Z can be visually recognized as a left-right reversed image.

Furthermore, in the above-described embodiment, the printing paper P is a transparent base material that transmits light, such as a transparent film. However, it may be a transmissive recording medium. For example, a translucent recording medium may be used.

Further, the arrangement of the nozzles of the print head in the present invention is not limited to the above-described embodiment, and other arrangements can be adopted. That is, it is only necessary that the color ink nozzle group, the white ink nozzle group, and the color ink nozzle group are arranged in this order in the sub-scanning direction.

The shielding material in the present invention is not limited to white ink. That is, other colors such as metallic ink can be adopted as long as the material exhibits an effect of shielding the first layer X and the third layer from each other.

20: Printer, 22: Paper stacker, 24: Paper feed roller, 26: Platen, 28:
Carriage, 30: Carriage motor, Carriage motor 30, 31: Paper feed roller, 3
2: traction belt, 34: guide rail, 36: print head, 50: reception buffer memory,
51: System controller (printing control unit), 52: Main memory, 53: EEPROM
54: Image buffer, 55: First layer data development unit, 56: Second shielding layer data development unit, 57: Third layer data development unit, 58: Image data inversion circuit (image data inversion unit), 61:
Main scanning drive circuit 62: Sub-scanning drive circuit 63: Head drive circuit 90: Host computer 91: Printer driver

Claims (1)

  1. A printing image obtained by attaching droplets onto a recording medium using a recording apparatus having a recording head divided into a first nozzle group, a second nozzle group, and a third nozzle group in the recording medium conveyance direction. A recording method for forming
    A step of ejecting a recording material from the first nozzle group onto a recording medium observable from the opposite side of the print image forming surface to form a first print image; and a shielding material from the second nozzle group. Forming a second print image that shields the first print image, and ejecting the recording material from the third nozzle group to form a third print image on the second print image. A recording method comprising the steps of:
JP2012197083A 2012-09-07 2012-09-07 Recording method, recording apparatus, and operation control program Withdrawn JP2012236425A (en)

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JP2012197083A JP2012236425A (en) 2012-09-07 2012-09-07 Recording method, recording apparatus, and operation control program

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JP2008166920 Division 2008-06-26

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3455854B2 (en) * 1996-01-06 2003-10-14 コントラ ヴィジョン リミテッド Panel with light transmission image

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3455854B2 (en) * 1996-01-06 2003-10-14 コントラ ヴィジョン リミテッド Panel with light transmission image

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