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WO2020062776A1 - 双面打印的方法和系统 - Google Patents

双面打印的方法和系统 Download PDF

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Publication number
WO2020062776A1
WO2020062776A1 PCT/CN2019/076514 CN2019076514W WO2020062776A1 WO 2020062776 A1 WO2020062776 A1 WO 2020062776A1 CN 2019076514 W CN2019076514 W CN 2019076514W WO 2020062776 A1 WO2020062776 A1 WO 2020062776A1
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WO
WIPO (PCT)
Prior art keywords
printed
print image
image
printing
printer
Prior art date
Application number
PCT/CN2019/076514
Other languages
English (en)
French (fr)
Inventor
梁健
王辉
Original Assignee
沈阳飞行船数码喷印设备有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 沈阳飞行船数码喷印设备有限公司 filed Critical 沈阳飞行船数码喷印设备有限公司
Priority to EP19868024.1A priority Critical patent/EP3858626B1/en
Priority to KR1020217012180A priority patent/KR102559324B1/ko
Priority to JP2021540349A priority patent/JP7138250B2/ja
Publication of WO2020062776A1 publication Critical patent/WO2020062776A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/60—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing on both faces of the printing material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/008—Controlling printhead for accurately positioning print image on printing material, e.g. with the intention to control the width of margins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
    • B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/44—Typewriters or selective printing mechanisms having dual functions or combined with, or coupled to, apparatus performing other functions
    • B41J3/46—Printing mechanisms combined with apparatus providing a visual indication
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/23—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 specially adapted for copying both sides of an original or for copying on both sides of a recording or image-receiving material
    • G03G15/231—Arrangements for copying on both sides of a recording or image-receiving material
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/387—Composing, repositioning or otherwise geometrically modifying originals
    • H04N1/393—Enlarging or reducing
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/23—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 specially adapted for copying both sides of an original or for copying on both sides of a recording or image-receiving material
    • G03G15/231—Arrangements for copying on both sides of a recording or image-receiving material
    • G03G15/232—Arrangements for copying on both sides of a recording or image-receiving material using a single reusable electrographic recording member
    • G03G15/234—Arrangements for copying on both sides of a recording or image-receiving material using a single reusable electrographic recording member by inverting and refeeding the image receiving material with an image on one face to the recording member to transfer a second image on its second face, e.g. by using a duplex tray; Details of duplex trays or inverters
    • G03G15/235—Arrangements for copying on both sides of a recording or image-receiving material using a single reusable electrographic recording member by inverting and refeeding the image receiving material with an image on one face to the recording member to transfer a second image on its second face, e.g. by using a duplex tray; Details of duplex trays or inverters the image receiving member being preconditioned before transferring the second image, e.g. decurled, or the second image being formed with different operating parameters, e.g. a different fixing temperature
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/409—Edge or detail enhancement; Noise or error suppression
    • H04N1/4095—Correction of errors due to scanning a two-sided document, i.e. show-through correction

Definitions

  • the present invention relates to the field of printing technology, and in particular, to a method and system for double-sided printing.
  • the present invention provides a method and system for double-sided printing, which can keep the images on the front and back sides corresponding in position, shape, and size, thereby improving alignment accuracy.
  • the present invention provides a method for double-sided printing, comprising: determining in advance a first print image printed on a first side of a printing material based on a first original and a second side of a printing material based on a second original.
  • the geometric difference between the second printed images to be printed above; the second original is adjusted according to the geometric difference to align the first printed image with the second printed image.
  • the method further includes: printing a first print image on the first side based on the first original at a first position of the feeding path of the double-sided printing;
  • the second position of the material path prints a second print image on the second side based on the adjusted second original.
  • the first determination is based on a first printed image printed on the first side of the printing material based on the first original and a first printed image to be printed on the second surface of the printing material based on the second original.
  • the geometric difference between the two printed images includes: scanning or photographing the first printed image; comparing the first printed image with the first original, and obtaining geometric change information of the first printed image relative to the first original, so as to determine the first printing in advance Geometric difference between the image and the second print image to be printed.
  • the scanning or photographing the first printed image includes: scanning the first printed image by a scanning device; wherein the scanning device is disposed on a printing cart of a second printer for printing the second printed image
  • the scanning lens of the scanning device is aligned with the portion of the printing material that has not yet been printed by the second printer.
  • the scanning or photographing the first print image includes: photographing the first print image by at least one photographing device; wherein the at least one photographing device is arranged on a feeding path for printing Between a first printer for a first printed image and a second printer for printing a second printed image.
  • the first determination is based on a first printed image printed on the first side of the printing material based on the first original and a first printed image to be printed on the second surface of the printing material based on the second original.
  • the geometric difference between the two printed images includes: scanning or taking the first printed image and the second printed image that has been printed on the second side of the printing material; comparing the first printed image with the second printed image that has been printed To obtain geometric change information of the printed second printed image relative to the first printed image, so as to determine a geometric difference between the first printed image and the second printed image to be printed in advance.
  • the scanning or photographing the first printed image and the second printed image that has been printed on the second side of the printing material includes: scanning the first printed image by a scanning device and scanning the first printed image.
  • the second print image printed on the second side of the material wherein, the scanning device is set on the printing cart of the second printer for printing the second printed image, and moves with the printing cart, and the scanning lens of the scanning device is aligned with the printing substrate.
  • the scanning or photographing the first printed image and the second printed image that has been printed on the second side of the printing material includes: photographing the first printed image and the already printed image by at least one photographing device.
  • the first determination is based on a first printed image printed on the first side of the printing material based on the first original and a first printed image to be printed on the second surface of the printing material based on the second original.
  • the geometric differences between the two printed images include: receiving user input; pre-determining the geometric differences between the first printed image and the second printed image to be printed according to the user's input; wherein the user's input is the user's comparison
  • the first print image and the second print image that has been printed on the second side of the printing material are determined.
  • the present invention provides a double-sided printing system, including: a double-sided printing device for realizing double-sided printing; and a controller for determining in advance that the first original is printed on the first side of the printing material based on the first original.
  • the geometrical difference between the first printed image and the second printed image to be printed on the second side of the printing material, and the second original of the second printed image is adjusted according to the geometrical difference, so that the double-sided printing device
  • the printed first print image is aligned with the second print image.
  • a double-sided printing apparatus includes: a first printer, the first printer is arranged at a first position of a feeding path of double-sided printing, and is used for controlling A first print image is printed on the first side of the printing material; a second printer, the second printer is arranged at a second position in the feeding path, and is used for controlling the printing material on the printing material according to the adjusted second original under the control of the controller.
  • the second side prints a second print image.
  • a double-sided printing device includes: a discharging roller and a receiving roller, and a printing material forms a feeding path between the discharging roller and the receiving roller; and a guide roller provided on the feeding path At each turning point, it is used to change the feeding direction of the printing material; the feeding roller is arranged between the discharging roller and the receiving roller, and is used to drive the printing material step by the drive of the motor.
  • the double-sided printing system further includes a scanning device for scanning the first printed image; wherein the controller compares the first printed image with the first original, and obtains the first printed image with respect to the first The geometric change information of an original, so as to determine the geometric difference between the first print image and the second print image to be printed in advance.
  • the scanning device is arranged on the printing cart of the second printer and moves with the printing cart, and the scanning lens of the scanning device is aligned with the portion of the printing material that has not been printed by the second printer.
  • the double-sided printing system further includes a scanning device for scanning the first printed image and the second printed image that has been printed on the second side of the printing material; wherein the controller compares the first The print image and the second print image that have been printed, and obtain geometric change information of the second print image that has been printed with respect to the first print image, so as to determine in advance between the first print image and the second print image to be printed Geometric differences.
  • the scanning device is set on the printing cart of the second printer and moves with the printing cart.
  • the scanning lens of the scanning device is aimed at the portion of the printing material that has been printed by the second printer or is being The part printed by the printer.
  • the double-sided printing system further includes: a photographing device for photographing the first printed image; wherein the controller compares the first printed image with the first original, and obtains the first printed image with respect to The geometric change information of the first original document, thereby determining a geometric difference between the first print image and the second print image to be printed in advance.
  • the at least one photographing device is disposed between the first printer and the second printer on a feeding path.
  • the double-sided printing system further includes: at least one photographing device for photographing the first printed image and the second printed image that has been printed on the second side of the printing material; wherein the controller Compare the first print image with the second print image that has been printed, and obtain the geometric change information of the second print image that has been printed with respect to the first print image, so as to determine in advance the first print image and the second print to be printed Geometric differences between images.
  • the at least one photographing device is disposed above the second printer, and the photographing lens of the at least one photographing device is aligned with the portion of the printing material that has been printed by the second printer or is being printed by the second printer. The printed part.
  • the controller receives a user's input, and determines a geometric difference between the first print image and the second print image to be printed in advance according to the user's input, where the user's input is The first print image and the second print image that has been printed on the second side of the printing material are determined.
  • the double-sided printing method and system of the present invention it is possible to judge and recognize the alignment error of the front and back sides in various aspects, including aspects such as shape, size, and position, so as to comprehensively obtain the geometrical differences between the front and back sides. In this way, it can provide a more comprehensive and objective reference and basis for subsequent image adjustments and corrections, which is conducive to improving printing accuracy, thereby making the quality of double-sided printing products higher and more convenient for practical applications.
  • FIG. 1 shows a flowchart of a double-sided printing method according to an embodiment of the present invention
  • FIG. 2 shows a flowchart of a double-sided printing method according to an embodiment of the present invention
  • FIG. 3 shows a flowchart of a double-sided printing method according to an embodiment of the present invention
  • FIG. 4 shows a flowchart of a double-sided printing method according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a double-sided printing system according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a double-sided printing system according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a double-sided printing system according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a double-sided printing system according to an embodiment of the present invention.
  • the terms “first”, “second” and other similar words are not intended to imply any order, quantity, and importance, but are only used to distinguish different elements.
  • the terms “a”, “an”, and other similar words are not intended to indicate that only one of the things is present, but rather that the description refers to one of the things, which may have one or more.
  • the terms “comprising”, “including”, and other similar words are intended to indicate logical interrelationships, and should not be regarded as representing spatial structure relations. For example, "A includes B” is intended to mean that logically B belongs to A, and not that B is located inside A in space.
  • Embodiments of the present invention provide a method and system for double-sided printing.
  • printing may refer to a process of copying an original on a surface of a printing material.
  • the type of printing may include laser printing, inkjet printing, dot printing, and the like.
  • the original may refer to an original graphic image on which printing is based, which can determine a form of an image finally printed.
  • the original may include a digital image or an analog image.
  • the printing material may be paper, textiles, and polymers (such as PVC (polyvinyl chloride), etc.).
  • the double-sided printing refers to the simultaneous printing of the front and back sides during a single feeding process of the printing material.
  • the images on both sides can be mirror-symmetric images or completely different images.
  • the synchronous double-sided printing may be performed by two printing devices arranged at the same station and printed on the front and back simultaneously, or the two printing devices arranged at different stations may be printed on the front and back.
  • FIG. 1 shows a flowchart of a double-sided printing method according to an embodiment of the present invention.
  • the method for double-sided printing includes:
  • the first side and the second side of the printing material may refer to the opposite sides of the printing material, wherein the first side may refer to the front surface, that is, because of its surface characteristics, it is generally used to display the printed image to the outside. That side can also refer to the reverse side, that is, the side that is usually not used for outside display because of its surface characteristics. The reverse side may not print an image or only a mirror image for enhancing the display effect of the front side image.
  • the first printed image and the second printed image may refer to actual images printed on a surface structure of a printing material for display and use.
  • the predetermined geometric difference refers to a predetermined geometric difference between the first print image and the second print image before the second print image is printed. Predetermined may be determined before any portion of the second printed image has been printed, or it may be determined after a portion of the second printed image has been printed and before the remaining portion has not been printed. In this embodiment, determining the geometric difference may refer to grasping the specific value of the geometric difference, which can be used as an effective basis for adjusting the original.
  • the geometric difference includes a difference in three aspects of position, shape, and size, instead of only one or two of a position difference, a shape difference, or a size difference.
  • the position difference may refer to a difference due to a shift in the overall position of the image.
  • Shape differences can refer to differences caused by distortion or unequal scaling of part or all of an image.
  • the size difference may refer to a difference caused by an overall enlargement or reduction of an image size.
  • the geometric difference does not include a difference in color, such as a difference in hue, saturation, and brightness, or a difference in print quality, such as a difference in resolution.
  • adjusting the second manuscript may refer to modifying the parameters of the second manuscript to cause geometric changes, including changes in position, size, and shape.
  • aligning the first print image with the second print image may refer to keeping the first print image and the second print image in the same shape, size, and position without staggering or shifting. Thus, the geometric difference between the first printed image and the second printed image is eliminated or substantially eliminated.
  • the double-sided printing method of the embodiment of the present invention it is possible to comprehensively judge the offset between the images on the front and back sides of the printing material, and grasp the difference in position, shape and size between the two, so that the front and back can be more accurately aligned.
  • Two-sided image Two-sided image.
  • the method for double-sided printing further includes:
  • the second print image is printed on the second side based on the adjusted second original.
  • the feeding path may refer to a conveying path of the printing material in the printing process, for example, a path from a discharging roller to a receiving roller.
  • the first position in the feeding path may refer to a position upstream in the feeding path
  • the second position may refer to a position in the feeding path downstream.
  • the adjusted second original may refer to a second original that has been adjusted according to the geometric difference. If no part of the second original has been printed and the second printed image has not been printed at all, the adjusted second original refers to the entire second original; if a part of the second original has been printed, a part of the second printed image is generated , The adjusted second original refers to the portion of the second original that has not yet been printed as an actual image.
  • the first position and the second position are staggered on the feeding path, so that the printing on the second side is later than the printing on the first side, thereby producing the effect of printing the front and back sides of the printing material one after the other.
  • there is a time difference between the printing on the front and back sides and the time difference can be used to adjust the device that prints the second side, thereby improving the printing registration accuracy.
  • FIG. 2 shows a flowchart of a double-sided printing method according to an embodiment of the present invention.
  • the double-sided printing method according to this embodiment includes an example of the double-sided printing method 101 according to the embodiment of FIG. 1, and specifically includes:
  • scanning refers to a process of converting an image into an analog signal or a digital signal by moving the lens left and right
  • shooting refers to a process of converting an image into an analog signal or a digital signal through a fixed lens.
  • the device used for scanning and the device used for shooting may be the same image acquisition device or different image acquisition devices.
  • comparing the first printed image and the first original document may refer to comparing the first printed image obtained by shooting or scanning with the first original document.
  • the two can be compared using digital image processing technology, such as by an algorithm.
  • the geometric change information may refer to the change information in the shape, size, and position of the first printed image and the first original, or it may refer to the change in shape, size, position, and other geometric parameters of the first print image and the first original. Change information.
  • determining the geometric difference by the geometric change information may refer to directly using the geometric change information of the first print image relative to the first original document as the geometric difference between the first print image and the second print image. It refers to converting the geometric change information of the first printed image with respect to the first original document into a geometric difference between the first printed image and the second printed image through an algorithm.
  • the reason why the geometric change information is not directly used as the geometric difference is that, considering the inherent differences in the shape, size, and position of the printed image and the original due to printing equipment or printing materials, the printed image always deviates from the original. When the geometric change information is used to estimate the geometric difference of the actual image, this inherent difference should be taken into account.
  • the calculated first printed image should be smaller than the magnitude of the geometric change information of the first print image relative to the first original.
  • the magnitude of the calculated geometric difference between the first printed image and the second printed image should be Greater than the amplitude of the geometric change information of the first printed image with respect to the first original.
  • the geometric deviation between the printed image and the original can be measured and calculated from various aspects. Therefore, the amount of change in printing can be obtained objectively and comprehensively, so as to provide a reliable reference for subsequent adjustments to the second original.
  • the double-sided printing method according to this embodiment includes an example 201 of the double-sided printing method according to the embodiment of FIG. 2, and specifically includes:
  • the scanning device is arranged on a printing cart of a second printer for printing the second printed image, and moves with the printing cart.
  • the scanning lens of the scanning device is aligned with the portion of the printing material that has not been printed by the second printer.
  • the scanning device may refer to a device that converts a graphic image into an analog signal or a digital signal by moving the lens left and right.
  • the scanning device By using the scanning device to collect the information of the first printed image according to the movement of the printer, the movement and printing time of the printing device can be fully used to accurately read the details of each part of the first printed image, so that the geometric changes of the printed image can be accurately judged information.
  • the double-sided printing method according to this embodiment includes an example of the double-sided printing method 201 according to the embodiment according to FIG. 2, and specifically includes:
  • the at least one photographing device is disposed on a feeding path between a first printer for printing a first print image and a second printer for printing a second print image.
  • the photographing device may be a device that converts a graphic image into an analog signal or a digital signal through a fixed lens.
  • a fixed lens By using a fixed lens to capture the first printed image, the overall situation of the first printed image can be obtained more quickly and efficiently, thereby allowing sufficient time for parameter adjustment of the second side printing. This can increase the overall speed of printing.
  • the at least one shooting device may refer to one shooting device, or may refer to multiple shooting devices.
  • the position, shape, and size information of the first printed image can be obtained more comprehensively, so as to more comprehensively and accurately determine the geometric change information of the first printed image with respect to the first original.
  • FIG. 3 shows a flowchart of a double-sided printing method according to an embodiment of the present invention.
  • the double-sided printing method according to this embodiment includes an example of the double-sided printing method 101 according to the embodiment of FIG. 1, and specifically includes:
  • the second printed image that has been printed may refer to a part of the second printed image that has been printed in accordance with a part of the second original.
  • the second print image that has been printed may be only a small portion (less than 10%) of the first print image of the second print image, or may be nearly half of the complete second print image.
  • comparing the first print image and the second print image that has been printed may refer to comparing the first print image obtained by scanning or shooting with the second print image.
  • digital image processing technology can be used to compare the two, for example, using an image algorithm to compare the two.
  • the geometric change information may refer to change information in the shape, size, and position of the first printed image and the printed second print image, or may refer to the change in shape, size, position, and Information on changes in other geometric parameters.
  • determining the geometric difference by the geometric change information may refer to directly using the geometric change information of the first print image relative to the second print image that has been printed as the first print image and the second print to be printed.
  • the geometric difference between the images may also refer to the fact that the geometric change information of the first print image relative to the second print image that has been printed is appropriately adjusted according to the specific situation, and then used as the first print image and the first print image to be printed. Geometric differences between the two printed images.
  • the double-sided printing method according to this embodiment includes an example of 301 of the double-sided printing method in the embodiment of FIG. 3, and specifically includes:
  • the scanning device is set on a printing cart of a second printer for printing a second printed image, and moves with the printing cart.
  • the scanning lens of the scanning device is aimed at the portion of the printing material that has been printed by the second printer or is being scanned by the printer. The part printed by the second printer will be described.
  • the scanning device may refer to a device that converts a graphic image into an analog signal or a digital signal by moving the lens left and right.
  • the scanning device When the scanning lens is aligned with the part of the printing material that has passed through the second printer, because the scanning device captures the surface texture, light and shade changes of the printing material more accurately, it can use a scanning device to simultaneously capture the front and back Image, that is, the front side image facing the lens of the scanning device and the back side image transmitted from the back side are collected at the same time. This is conducive to saving equipment resources, reducing equipment costs and improving production efficiency.
  • the scanning lens When the scanning lens is aligned with the part being printed by the second printer, by scanning the part of the second printed image being printed, the deviation of the second printed image can be found more quickly and in time, thereby shortening the time from finding the first print
  • the geometric difference between the image and the printed second printed image is to adjust the time elapsed for the second original, reducing the part of the image that has been misaligned, which is beneficial to improving the overall quality of the printed product.
  • the double-sided printing method according to this embodiment includes an example of 301 of the double-sided printing method in the embodiment of FIG. 3, and specifically includes:
  • the at least one photographing device is disposed above a second printer for printing a second print image, and the photographing lens of the at least one photographing device is directed at a portion of the printing material that has been printed by the second printer or is being The part printed by the second printer.
  • the photographing device may be a device that converts a graphic image into an analog signal or a digital signal through a fixed lens.
  • a fixed lens to capture the first print image and the second print image that has been printed, the overall situation of the first print image and the second print image that has been printed can be obtained more quickly and efficiently, so as to print parameters for the second side Adjust to allow sufficient time.
  • the shooting lens is aimed at the part being printed by the second printer, by shooting the part of the second printed image being printed, the deviation of the second printed image can be found more quickly and in time.
  • the at least one shooting device may refer to one shooting device, or may refer to multiple shooting devices.
  • multiple photographing devices capture the first printed image
  • the position, shape, and size information of the first printed image and the second printed image that has been printed can be obtained more comprehensively, thereby more comprehensive and accurate judgment of the printed first Geometric change information of the two printed images relative to the first printed image.
  • FIG. 4 shows a flowchart of a double-sided printing method according to an embodiment of the present invention.
  • the double-sided printing method according to this embodiment includes an example of the double-sided printing method 101 according to the embodiment of FIG. 1, and specifically includes:
  • the user's input is determined by the user by comparing the first printed image with the second printed image that has been printed on the second side of the printing material.
  • the user may refer to an operator who performs a double-sided printing method, or a user of a double-sided printing system.
  • the input by the user may mean that the user inputs parameters that can reflect differences in shape, size, and position of the first printed image and the second printed image to be printed into the controller, the parameters For example, it is the shape distortion change amount, the size scaling amount, the position shift amount, and so on.
  • pre-determining the geometric difference according to the user input may refer to directly using the user's input as the value of the geometric difference, or it may refer to adjusting the user's input appropriately as the value of the geometric difference according to specific circumstances. .
  • the user compares the first printed image with the second printed image that has been printed. The comparison may be performed directly with the naked eye, or it may be performed using an observation tool (such as a magnifying glass or an electronic observation device).
  • the geometric difference is obtained through user input for adjusting the second original, which can eliminate the setting of the image comparison module in the image acquisition device and the print controller, and is conducive to saving equipment resources.
  • the geometric difference is obtained through user input for adjusting the second original, which can eliminate the setting of the image comparison module in the image acquisition device and the print controller, and is conducive to saving equipment resources.
  • printing scenes such as advertising printing
  • FIG. 5 is a schematic structural diagram of a double-sided printing system according to an embodiment of the present invention.
  • the double-sided printing system includes:
  • a controller (not shown) for determining in advance a first print image printed on the first side of the printing material 510 and a second print image to be printed on the second side of the printing material 510 based on the first original And the second original image of the second print image is adjusted according to the geometric difference, so that the first print image printed by the duplex printing apparatus 500 is aligned with the second print image.
  • the double-sided printing device 500 may refer to a device for applying printing ink on the front and back surfaces of the printing material 510 to form a printed image.
  • the double-sided printing device 500 may refer to a device capable of realizing simultaneous double-sided printing, that is, a device capable of simultaneously and successively printing on both sides of the printing material 510 in a complete feeding process.
  • the controller may refer to a print controller capable of controlling a printing effect of a double-sided printing apparatus and having an image correction function.
  • the geometric difference between the first print image and the second print image to be printed is determined in advance by the controller, so that the offset between the images on the front and back sides of the printing material can be fully judged, and the two can be grasped. Differences in position, shape, and size make it possible to more accurately align the front and back images.
  • the use of the controller can automatically realize the entire offset judgment and image correction process, which is beneficial to reducing labor costs and improving printing efficiency.
  • the double-sided printing apparatus 500 includes:
  • a first printer 520 where the first printer is arranged at a first position of a feeding path for double-sided printing, and is configured to print a first printed image on a first side of a printing material 510 according to a first original under the control of a controller;
  • a second printer 530 which is arranged at a second position in the feeding path and is used to print a second print on the second side of the printing material 510 according to the adjusted second original under the control of the controller image.
  • the first printer 520 includes a first printing cart 521 and a first printing platform 522 disposed below the first printing cart
  • the second printer 530 includes a second printing cart 531 and a first printing cart 531 disposed below the second printing cart.
  • the printing trolley can be mounted on a track beam
  • the track beam can be mounted on a printer rack.
  • the print cart can reciprocate along the track beam.
  • the first and second printers may be an inkjet printer, a laser printer, a dot printer, and the like.
  • the double-sided printing apparatus 500 includes:
  • the guide roller 560 is provided at each turning point of the feeding path, and is used to change the feeding direction of the printing material 510;
  • the feeding roller 570 is disposed between the discharging roller 540 and the receiving roller 550, and is used for driving the printing material 510 to step by driving by a motor.
  • the discharging roller 540 is used to release the printing material for printing, and the receiving roller 550 is used to collect the printed printing material again.
  • the feeding roller 570 has a power device, such as a motor, so as to provide power to the printing material and keep it moving smoothly between the discharging roller and the receiving roller.
  • the feeding rollers 570 always appear in pairs, and the printing material 510 passes through the pair of feeding rollers in an S shape, thereby realizing the turning surface of the printing material.
  • the guide roller 560 is used to guide the moving direction of the printing material, and provides support for the turning of the printing material in the feeding path.
  • the double-sided printing system further includes:
  • a scanning device 501 configured to scan a first printed image
  • the controller compares the first printed image with the first original, and obtains geometric change information of the first printed image with respect to the first original, so as to determine a geometric difference between the first printed image and the second printed image to be printed in advance. .
  • the scanning device 501 is disposed on the printing cart of the second printer 530 and moves with the printing cart.
  • the scanning lens of the scanning device 501 is aligned with the portion of the printing material 510 that has not been printed by the second printer 530.
  • the scanning device 501 is disposed on the second printing cart 531 of the second printer 530 and moves on the track beam with the second printing cart 531, so that the printing material is printed while the second printing cart 531 is printing. scanning.
  • the scanning device 501 can only scan the first printed image on the first side of the printing material 510. Since the first surface of the printing material 510 faces downward at this time, the scanning device 501 scans an image transmitted from the rear surface.
  • Scanning the first printed image using a scanning device can make full use of the time of the second side of the printer to print, and accurately read the geometry of the first printed image from the back side, so as to accurately calculate the first printed image relative to the first original. Geometric differences for subsequent adjustments.
  • the double-sided printing system further includes:
  • a scanning device 501 configured to scan a first printed image and a second printed image that has been printed on the second side of the printing material 510;
  • the controller compares the first print image with the second print image that has been printed, and obtains geometric change information of the second print image that has been printed with respect to the first print image, so as to determine in advance the first print image and the Geometric difference between the printed second print images.
  • the scanning device 501 is disposed on the printing cart of the second printer 530 and moves with the printing cart.
  • the scanning lens of the scanning device 501 is aligned with the portion of the printing material 510 that has been printed by the second printer 530 or The portion being printed by the second printer 530.
  • the scanning device 501 is disposed on the second printing cart 531 of the second printer 530 and moves on the track beam with the second printing cart 531, so that the printing material is printed while the second printing cart 531 is printing. scanning.
  • the scanning device 501 can scan the first printed image on the first side of the printing material 510 and the printed image on the second side of the printing material 510. Out of the second print image. Since the first side of the printing material 510 faces downward at this time, the scanning device 501 can simultaneously scan the second printed image on the front side and the first printed image transmitted from the back side. Using the scanning device to scan the printed second printed image and the first printed image can eliminate the inherent errors of the printing system and directly compare the printed image effects, so as to obtain a more objective and true geometric deviation for subsequent Image correction provides a more reliable basis.
  • the scanning device 501 can scan the first printed image on the first surface of the printing material 510 and the first print image on the second surface of the printing material 510.
  • the second print image being printed.
  • FIG. 6 is a schematic structural diagram of a double-sided printing system according to an embodiment of the present invention.
  • the scanning device 601 is also disposed on the second printing cart 631 of the second printer 630 and moves on the track beam with the second printing cart 631.
  • the difference between this embodiment and the embodiment of FIG. 5 is that the feeding path of the printing material is different, and the positions of the printer and each roller are also different.
  • the printing material 510 in the embodiment of FIG. 5 moves from the upper left to the lower right, and the printing material 610 in this embodiment moves from the upper right to the lower right.
  • the first printer 520 and the second printer 530 in the embodiment of FIG. 5 are arranged left and right, and the first printer 620 and the second printer 630 in this embodiment are arranged vertically.
  • the embodiment of FIG. 6 is basically the same as the embodiment of FIG. 5, and details are not described again.
  • FIG. 7 is a schematic structural diagram of a double-sided printing system according to an embodiment of the present invention. Except for the following description, the details of the embodiment of FIG. 7 are basically the same as those of the embodiment of FIG. 6 and will not be described again. According to this embodiment, the double-sided printing system further includes:
  • the controller compares the first printed image with the first original, and obtains geometric change information of the first printed image with respect to the first original, so as to determine a geometric difference between the first printed image and the second printed image to be printed in advance. .
  • the at least one photographing device 701 is disposed between the first printer 720 and the second printer 730 on a feeding path.
  • the photographing device 701 is arranged along the feeding path, and is disposed below the printing material 710, and the lens faces the first side of the printing material 710.
  • the photographing device 701 is disposed between the first printer 720 and the second printer 730, and the first print image can be captured before the second printer 730 prints, and by comparing the first print image with the first The original gives the geometric variation of the image. This is beneficial to eliminate the possibility of the second printed image shifting as soon as possible, and improve the registration quality of the printed product.
  • the photographing device 701 is arranged near the second printer 730 between the first printer 720 and the second printer 730. This is to allow more time for the printing material that has just passed through the first printer 720 to deform and thus be taken during photographing. Can capture more accurate geometric changes.
  • the photographing device 701 may be disposed between the first printer 720 and the second printer 730 near the first printer 730.
  • FIG. 8 is a schematic structural diagram of a double-sided printing system according to an embodiment of the present invention. Except for the content described below, the embodiment in FIG. 8 is basically the same as the embodiment in FIG. 7, and details are not described again. According to this embodiment, the double-sided printing system further includes:
  • At least one photographing device 801 configured to photograph a first printed image and a second printed image that has been printed on the second side of the printing material 810;
  • the controller compares the first print image with the second print image that has been printed, and obtains geometric change information of the second print image that has been printed with respect to the first print image, so as to determine in advance the first print image and the Geometric difference between the printed second print images.
  • the at least one photographing device 801 is disposed above the second printer 830, and a photographing lens of the at least one photographing device 801 is aligned with a portion of the printing material 810 that has been printed by the second printer 830 or is being processed. The portion printed by the second printer 830.
  • the first printer 820 is disposed upstream of the feeding path of the printing material 810, and the second printer 830 is disposed downstream of the feeding path.
  • the photographing device 801 is fixedly disposed above the second printer 830 and does not move with the printing cart of the second printer 830.
  • the controller receives a user's input, and determines a geometric difference between the first print image and the second print image to be printed out in advance according to the user's input, wherein the user's input is the A print image and a second print image that has been printed on the second side of the printing material are determined.
  • the embodiments of the present invention may also be implemented by hardware or a combination of software and hardware.
  • the hardware part can be implemented with dedicated logic; the software part can be stored in memory and executed by a suitable instruction execution system, such as a microprocessor or dedicated design hardware.
  • a suitable instruction execution system such as a microprocessor or dedicated design hardware.
  • processor control code such as in a carrier medium such as a magnetic disk, CD or DVD-ROM, such as a read-only memory
  • Such code is provided on a programmable memory (firmware) or a data carrier such as an optical or electronic signal carrier.
  • the device and its module of the present invention can be implemented by hardware circuits such as a VLSI or gate array, a semiconductor such as a logic chip, a transistor, or a programmable hardware device such as a field programmable gate array, a programmable logic device, or the like. It can also be implemented by software executed by various types of processors, or by a combination of the above-mentioned hardware circuits and software, such as firmware.

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Abstract

一种双面打印的方法和系统，该方法包括：预先确定基于第一原稿在承印材料的第一面上打印出第一打印图像与基于第二原稿在承印材料的第二面上将要打印出的第二打印图像之间的几何差异（101）；根据几何差异对第二原稿进行调整，以使第一打印图像与第二打印图像对准（102）。该双面打印方法和系统能够全面判断承印材料正反两面图像的对位误差，并能够根据对位误差对第二面的打印进行及时调整，从而提高正反面的对位精度。

Description

双面打印的方法和系统
本申请要求2018年9月25日提交的申请号为201811114677.2的中国专利申请的优先权，通过引用将其全部内容并入本文。
技术领域
本发明涉及印刷技术领域，特别涉及一种双面打印的方法和系统。
发明背景
目前已经开发出能够同步实现双面打印的打印设备。在某些应用场景下，需要将成镜像对称或以其他方式对应的两幅图像分别打印在承印材料的正反两面，打印完成后将承印材料贴装在例如灯箱表面。在白天不开灯时使用正面图像进行展示，晚上灯箱开灯时反面图像在灯光照射下透射到正面从而增强正面图像的显示效果，从而保持灯箱展示效果在全天环境下的一致性。然而，让正反两面的图像精确对位是一个有挑战性的问题，现有的技术并不能保证两面的图像在各个方面保持几何形态上的对应一致，从而降低了打印产品的使用效果。
发明内容
为了解决上述问题，本发明提供一种双面打印的方法和系统，能够使正反两面的图像在位置、形状和尺寸上保持对应，从而提高对位精度。
在一方面，本发明提供一种双面打印的方法，包括：预先确定基于第一原稿在承印材料的第一面上打印出的第一打印图像与基于第二原稿在承印材料的第二面上将要打印出的第二打印图像之间的几何差异；根据几何差异对第二原稿进行调整，以使第一打印图像与第二打印图像对准。
根据本发明的一个具体实施例，所述方法还包括：在双面打印的走料路径的第一位置，基于第一原稿在第一面上打印出第一打印图像；在双面打印的走料路径的第二位置，基于调整后的第二原稿在第二面上打印出第二打印图像。
根据本发明的一个具体实施例，所述预先确定基于第一原稿在承印材料的第一面上打印出的第一打印图像与将基于第二原稿在承印材料的第二面上打印出的第二打印图像之间的几何差异，包括：扫描或拍摄第一打印图像；对比第一打印图像与第一原稿，获取第一打印图像相对于第一原稿的几何变化信息，从而预先确定第一打印图像与将要打印出的第二打印图像之间的几何差异。
根据本发明的一个具体实施例，所述扫描或拍摄第一打印图像，包括：通过 扫描设备扫描第一打印图像；其中，扫描设备设置在用于打印第二打印图像的第二打印机的打印小车上，并随打印小车移动，扫描设备的扫描镜头对准承印材料的尚未经过第二打印机打印的部分。
根据本发明的一个具体实施例，所述扫描或拍摄第一打印图像，包括：通过至少一个拍摄设备拍摄第一打印图像；其中，所述至少一个拍摄设备在走料路径上设置在用于打印第一打印图像的第一打印机和用于打印第二打印图像的第二打印机之间。
根据本发明的一个具体实施例，所述预先确定基于第一原稿在承印材料的第一面上打印出的第一打印图像与将基于第二原稿在承印材料的第二面上打印出的第二打印图像之间的几何差异，包括：扫描或拍摄第一打印图像和已经在承印材料的第二面上打印出的第二打印图像；对比第一打印图像和已经打印出的第二打印图像，获取已经打印出的第二打印图像相对于第一打印图像的几何变化信息，从而预先确定第一打印图像与将要打印出的第二打印图像之间的几何差异。
根据本发明的一个具体实施例，所述扫描或拍摄第一打印图像和已经在承印材料的第二面上打印出的第二打印图像，包括：通过扫描设备扫描第一打印图像和已经在承印材料的第二面上打印出的第二打印图像；其中，扫描设备设置在用于打印第二打印图像的第二打印机的打印小车上，并随打印小车移动，扫描设备的扫描镜头对准承印材料的已经经过第二打印机打印的部分或者正在被第二打印机打印的部分。
根据本发明的一个具体实施例，所述扫描或拍摄第一打印图像和已经在承印材料的第二面上打印出的第二打印图像，包括：通过至少一个拍摄设备拍摄第一打印图像和已经在承印材料的第二面上打印出的第二打印图像；其中，所述至少一个拍摄设备设置在用于打印第二打印图像的第二打印机上方，所述至少一个拍摄设备的拍摄镜头对准承印材料的已经经过第二打印机打印的部分或者正在被所述第二打印机打印的部分。
根据本发明的一个具体实施例，所述预先确定基于第一原稿在承印材料的第一面上打印出的第一打印图像与将基于第二原稿在承印材料的第二面上打印出的第二打印图像之间的几何差异，包括：接收用户的输入；根据用户的输入预先确定第一打印图像与将要打印出的第二打印图像之间的几何差异；其中，用户的输入是用户通过对比第一打印图像和已经在承印材料的第二面上打印出的第二打印图像确定的。
在另一方面，本发明提供一种双面打印系统，包括：双面打印装置，用于实现双面打印；控制器，用于预先确定基于第一原稿在承印材料的第一面上打印出的第一打印图像与在承印材料的第二面上将要打印出的第二打印图像之间的几何差异，并根据几何差异对第二打印图像的第二原稿进行调整，以使双面打印装置 打印出的第一打印图像与第二打印图像对准。
根据本发明的一个具体实施例，双面打印装置包括：第一打印机，第一打印机布置在双面打印的走料路径的第一位置，用于在控制器的控制下，根据第一原稿在承印材料的第一面打印出第一打印图像；第二打印机，第二打印机布置在走料路径中的第二位置，用于在控制器的控制下，根据调整后的第二原稿在承印材料的第二面打印出第二打印图像。
根据本发明的一个具体实施例，双面打印装置包括：放料辊和收料辊，承印材料在放料辊和收料辊之间形成走料路径；导料辊，设置在走料路径的各个折点处，用于改变承印材料的走料方向；送料辊，设置在放料辊与收料辊之间，用于在电机的驱动下带动承印材料步进。
根据本发明的一个具体实施例，双面打印系统还包括扫描设备，扫描设备用于扫描第一打印图像；其中，控制器对比第一打印图像与第一原稿，获取第一打印图像相对于第一原稿的几何变化信息，从而预先确定第一打印图像与将要打印出的第二打印图像之间的几何差异。
根据本发明的一个具体实施例，扫描设备设置在第二打印机的打印小车上，并随打印小车移动，扫描设备的扫描镜头对准承印材料的尚未经过第二打印机打印的部分。
根据本发明的一个具体实施例，双面打印系统还包括扫描设备，用于扫描第一打印图像和已经在承印材料的第二面上打印出的第二打印图像；其中，控制器对比第一打印图像和已经打印出的第二打印图像，获取已经打印出的第二打印图像相对于第一打印图像的几何变化信息，从而预先确定第一打印图像与将要打印出的第二打印图像之间的几何差异。
根据本发明的一个具体实施例，扫描设备设置在第二打印机的打印小车上，并随打印小车移动，扫描设备的扫描镜头对准承印材料的已经经过第二打印机打印的部分或者正在被第二打印机打印的部分。
根据本发明的一个具体实施例，双面打印系统还包括：拍摄设备，拍摄设备用于拍摄第一打印图像；其中，控制器对比第一打印图像与第一原稿，获取第一打印图像相对于第一原稿的几何变化信息，从而预先确定第一打印图像与将要打印出的第二打印图像之间的几何差异。
根据本发明的一个具体实施例，所述至少一个拍摄设备在走料路径上设置在第一打印机和第二打印机之间。
根据本发明的一个具体实施例，双面打印系统还包括：至少一个拍摄设备，用于拍摄第一打印图像和已经在承印材料的第二面上打印出的第二打印图像；其中，控制器对比第一打印图像和已经打印出的第二打印图像，获取已经打印出的第二打印图像相对于第一打印图像的几何变化信息，从而预先确定第一打印图像 与将要打印出的第二打印图像之间的几何差异。
根据本发明的一个具体实施例，所述至少一个拍摄设备设置在第二打印机上方，所述至少一个拍摄设备的拍摄镜头对准承印材料的已经经过第二打印机打印的部分或者正在被第二打印机打印的部分。
根据本发明的一个具体实施例，控制器接收用户的输入，并根据用户的输入预先确定第一打印图像与将要打印出的第二打印图像之间的几何差异，其中用户的输入是用户通过对比第一打印图像和已经在承印材料的第二面上打印出的第二打印图像确定的。
根据本发明的双面打印方法和系统，能够对正反面的对位误差进行多方面的判断和识别，包括形状、尺寸和位置等方面，从而全面获取正反面的几何形态上的差异。这样一来，能够为后续的图像调整和修正提供更加全面客观的参照和依据，有利于提高打印精度，从而使得双面打印产品的质量更高，更便于实际应用。
附图简要说明
以下结合附图详细描述本发明的具体实施方式，其中：
图1示出根据本发明一实施例的双面打印方法的流程图；
图2示出根据本发明一实施例的双面打印方法的流程图；
图3示出根据本发明一实施例的双面打印方法的流程图；
图4示出根据本发明一实施例的双面打印方法的流程图；
图5示出根据本发明一实施例的双面打印系统的结构示意图；
图6示出根据本发明一实施例的双面打印系统的结构示意图；
图7示出根据本发明一实施例的双面打印系统的结构示意图；
图8示出根据本发明一实施例的双面打印系统的结构示意图。
实施本发明的方式
为了使本领域技术人员更加清楚地理解本发明的概念和思想，以下结合具体实施例详细描述本发明。应理解，本文给出的实施例都只是本发明可能具有的所有实施例的一部分。本领域技术人员在阅读本申请的说明书以后，有能力对下述实施例的部分或整体作出改进、改造、或替换，这些改进、改造、或替换也都包含在本发明要求保护的范围内。
在本文中，术语“第一”、“第二”和其它类似词语并不意在暗示任何顺序、数量和重要性，而是仅仅用于对不同的元件进行区分。在本文中，术语“一”、“一个”和其它类似词语并不意在表示只存在一个所述事物，而是表示有关描述针对所述事物中的一个，所述事物可能具有一个或多个。在本文中，术语“包含”、“包 括”和其它类似词语意在表示逻辑上的相互关系，而不能视作表示空间结构上的关系。例如，“A包括B”意在表示在逻辑上B属于A，而不表示在空间上B位于A的内部。另外，术语“包含”、“包括”和其它类似词语的含义应视为开放性的，而非封闭性的。例如，“A包括B”意在表示B属于A，但是B不一定构成A的全部，A还可能包括C、D、E等其它元素。
在本文中，术语“实施例”、“本实施例”、“一实施例”、“一个实施例”并不表示有关描述仅仅适用于一个特定的实施例，而是表示这些描述还可能适用于另外一个或多个实施例中。本领域技术人员应理解，在本文中，任何针对某一个实施例所做的描述都可以与另外一个或多个实施例中的有关描述进行替代、组合、或者以其它方式结合，所述替代、组合、或者以其它方式结合所产生的新实施例是本领域技术人员能够容易想到的，属于本发明的保护范围。
本发明各实施例提供一种双面打印的方法和系统。在本发明各实施例中，打印可以是指将原稿复制在承印材料表面的过程。打印的类型可以包括激光打印、喷墨打印、针式打印等。在本发明各实施例中，原稿可以是指打印所依据的原始图形图像，其能够决定最终打印出的图像的形态。在一些实施例中，原稿可以包括数字图像或模拟图像。在本发明各实施例中，承印材料可以是纸张、纺织品和聚合物(如PVC(聚氯乙烯)等)。在本发明各实施例中，双面打印是指在承印材料的一次进给过程中，同步实现正反两面的打印，两面的图像可以是镜像对称的图像，或者是完全不同的图像。在本发明各实施例中，同步双面打印可以由在同一工位由上下布置的两台打印设备同时打印正反面，也可由布置在不同工位的两台打印设备先后打印正反面。
图1示出根据本发明一实施例的双面打印方法的流程图。在本实施例中，双面打印的方法包括：
101、预先确定基于第一原稿在承印材料的第一面上打印出的第一打印图像与基于第二原稿在承印材料的第二面上将要打印出的第二打印图像之间的几何差异；
102、根据几何差异对第二原稿进行调整，以使第一打印图像与第二打印图像对准。
在本实施例中，承印材料的第一面和第二面可以是指承印材料的相反两面，其中，第一面可以是指正面，即因其表面特性，通常用于面向外界展示打印图像的那一面，也可以是指反面，即因其表面特性，通常不用于面向外界展示的那一面。反面可以不打印图像或者仅打印用于增强正面图像的展示效果的镜像图像。在本实施例中，第一打印图像和第二打印图像可以是指印制在承印材料的表面结构上的用于展示和使用的实际图像。
在本实施例中，预先确定几何差异，是指在第二打印图像打印完成之前预先 确定第一打印图像与第二打印图像之间的几何差异。预先确定可以是指在尚未打印出第二打印图像的任何部分之前确定，也可以是指在已经打印出第二打印图像的一部分之后、剩余部分尚未打印出来之前确定。在本实施例中，确定几何差异，可以是指掌握几何差异的具体数值，其能够作为调整原稿的有效依据。
在本实施例中，几何差异包括位置、形状和尺寸三个方面的差异，而非仅包括位置差异、形状差异或尺寸差异之一或之二。位置差异可以是指由于图像整体位置发生偏移而造成的差异。形状差异可以是指图像的部分或全部发生扭曲或不等比例的缩放而造成的差异。尺寸差异可以是指图像尺寸的整体放大或缩小而造成的差异。在本实施例中，几何差异不包括颜色方面的差异，例如色调、饱和度和亮度上的差异，也不包括打印质量方面的差异，例如分辨率上的差异。
在本实施例中，对第二原稿进行调整，可以是指修改第二原稿的参数，使其发生几何上的变化，包括位置、尺寸和形状上的变化。在本实施例中，使第一打印图像与第二打印图像对准，可以是指使第一打印图像和第二打印图像在形状、尺寸和位置上保持一致，不出现错开、偏移等现象，从而消除或基本消除第一打印图像和第二打印图像之间的几何差异。
根据本发明实施例的双面打印方法，能够全面判断承印材料正反两面上的图像之间的偏移量，掌握二者在位置、形状和尺寸上的差异，从而能够更加准确地对齐正反两面的图像。
在本发明的一实施例中，双面打印的方法还包括：
在双面打印的走料路径的第一位置，基于第一原稿在第一面上打印出第一打印图像；
在双面打印的走料路径的第二位置，基于调整后的所述第二原稿在第二面上打印出所述第二打印图像。
在本实施例中，走料路径可以是指承印材料在打印过程中的运送路径，例如是从放料辊到收料辊之间的路径。走料路径中的第一位置可以是指走料路径中偏上游的位置，第二位置可以是指走料路径中偏下游的位置。在本实施例中，调整后的第二原稿可以是指已经根据几何差异调整过的第二原稿。如果尚未打印出第二原稿的任何部分，完全没有打印出第二打印图像，则调整后的第二原稿是指第二原稿全部；如果已经打印出第二原稿的一部分，产生一部分第二打印图像，则调整后的第二原稿是指第二原稿的尚未被打印成实际图像的那部分。
在本实施例中，第一位置和第二位置在走料路径上错开布置，使得第二面的打印迟于第一面的打印，从而产生先后打印承印材料正反两面的效果。这样一来，正反面的打印之间存在一个时间差，利用这一时间差可以对打印第二面的设备进行调整，从而提高打印的对位精度。
图2示出根据本发明一实施例的双面打印方法的流程图。根据本实施例的双 面打印方法包括根据图1实施例的双面打印方法的101的一个示例，具体包括：
201、扫描或拍摄第一打印图像；
202、对比第一打印图像与第一原稿，获取第一打印图像相对于第一原稿的几何变化信息，从而预先确定第一打印图像与将要打印出的第二打印图像之间的几何差异。
在本实施例中，扫描是指通过镜头左右移动方式将图像转换为模拟信号或数字信号的过程，拍摄是指通过固定镜头将图像转换为模拟信号或数字信号的过程。在本实施例中，扫描所采用的设备与拍摄所采用的设备可以是相同的图像采集设备，也可以是不同的图像采集设备。
在本实施例中，对比第一打印图像和第一原稿，可以是指将拍摄或扫描得到的第一打印图像与第一原稿进行对比。当第一打印图像和第一原稿都是数字图像时，可以利用数字图像处理技术、例如通过算法对二者进行对比。在本实施例中，几何变化信息可以是指第一打印图像与第一原稿在形状、尺寸和位置上的变化信息，也可以是指二者在在形状、尺寸、位置和其它几何参数上的变化信息。
在本实施例中，由几何变化信息确定几何差异，可以是指直接将第一打印图像相对于第一原稿的几何变化信息作为第一打印图像与第二打印图像之间的几何差异，也可以是指通过某种算法，将第一打印图像相对于第一原稿的几何变化信息转换为第一打印图像与第二打印图像之间的几何差异。之所以不将几何变化信息直接作为几何差异使用，是因为考虑到由于打印设备或承印材料的原因，打印图像与原稿在形状、尺寸和位置上存在固有差异，打印图像总会偏离原稿，因此将几何变化信息应用于预估实际图像的几何差异时，应当考虑到这种固有差异。例如，由于承印材料在第一次打印后会发生收缩，使得打印图像相对于原稿缩小，而第二次打印后不会发生收缩或仅发生较小幅度的收缩，因此计算出的第一打印图像与第二打印图像之间的几何差异的幅度应当小于第一打印图像相对于第一原稿的几何变化信息的幅度。再例如，由于承印材料在第一次打印后发生的收缩的幅度小于第二次打印后发生的收缩的幅度，因此计算出的第一打印图像与第二打印图像之间的几何差异的幅度应当大于第一打印图像相对于第一原稿的几何变化信息的幅度。
在本实施例中，通过扫描或拍摄第一打印图像，并将得到的第一打印图像与第一原稿作对比，能够从各个方面测量和计算出打印出来的图像与原稿之间的几何偏差，从而能够全面客观地得出打印的变化量，从而为后续对第二原稿的调整提供可靠的参照。
以下描述本发明的另一实施例。根据本实施例的双面打印方法包括根据图2实施例的双面打印方法的201的一个示例，具体包括：
通过扫描设备扫描第一打印图像；
其中，扫描设备设置在用于打印第二打印图像的第二打印机的打印小车上，并随打印小车移动，扫描设备的扫描镜头对准承印材料的尚未经过第二打印机打印的部分。
在本实施例中，扫描设备可以是指通过镜头左右移动方式将图形图像转换为模拟信号或数字信号的设备。通过采用根据打印机运动的扫描设备采集第一打印图像的信息，能够充分利用打印设备的运动和打印时间，精确读取第一打印图像的各个部分的细节，从而能够准确判断出打印图像的几何变化信息。
关于本实施例的其它细节，参见下文有关双面打印系统的描述。
以下描述本发明的另一实施例。根据本实施例的双面打印方法包括根据图2是实施例的双面打印方法的201的一个示例，具体包括：
通过至少一个拍摄设备拍摄第一打印图像；
其中，所述至少一个拍摄设备在走料路径上设置在用于打印第一打印图像的第一打印机和用于打印第二打印图像的第二打印机之间。
在本实施例中，拍摄设备可以是通过固定镜头将图形图像转换为模拟信号或数字信号的设备。通过采用固定镜头拍摄第一打印图像，能够更加快速有效地获取第一打印图像的整体情况，从而为第二面打印的参数调整预留充足的时间。这样一来，能够提高打印的整体速度。
在本实施例中，所述至少一个拍摄设备可以是指一个拍摄设备，也可以是指多个拍摄设备。当有多个拍摄设备拍摄第一打印图像时，能够更加全面地获取第一打印图像的位置、形状和尺寸信息，从而更加全面准确地判断第一打印图像相对于第一原稿的几何变化信息。
关于本实施例的其它细节，参见下文有关双面打印系统的描述。
图3示出根据本发明一实施例的双面打印方法的流程图。根据本实施例的双面打印方法包括根据图1实施例的双面打印方法的101的一个示例，具体包括：
301、扫描或拍摄第一打印图像和已经在承印材料的第二面上打印出的第二打印图像；
302、对比第一打印图像和已经打印出的第二打印图像，获取已经打印出的第二打印图像相对于第一打印图像的几何变化信息，从而预先确定第一打印图像与将要打印出的第二打印图像之间的几何差异。
在本实施例中，已经打印出的第二打印图像可以是指已经依照第二原稿的一部分打印出的第二打印图像的一部分。例如，已经打印出的第二打印图像可以仅仅是第二打印图像的最先打印出的一小部分(小于10％)，也可以是接近完整的第二打印图像的一半。
在本实施例中，对比第一打印图像和已经打印出的第二打印图像，可以是指将扫描或拍摄得到的第一打印图像与第二打印图像进行对比。当扫描或拍摄得到 的第一打印图像和第二打印图像的已经打印出的部分都是数字图像时，可以利用数字图像处理技术对二者进行对比，例如通过某种图像算法对二者进行对比。在本实施例中，几何变化信息可以是指第一打印图像与已打印出的第二打印图像在形状、尺寸和位置上的变化信息，也可以是指二者在在形状、尺寸、位置和其它几何参数上的变化信息。在本实施例中，由几何变化信息确定几何差异，可以是指直接将第一打印图像相对于已经打印出的第二打印图像的几何变化信息作为第一打印图像与将要打印出的第二打印图像之间的几何差异，也可以是指根据具体情况，对第一打印图像相对于已经打印出的第二打印图像的几何变化信息进行适当调整之后再作为第一打印图像与将要打印出的第二打印图像之间的几何差异。
在本实施例中，通过对比实际打印出的第一打印图像和第二打印图像的一部分，能够更加准确客观地判断正反两面的图像差异，消除由于承印材料收缩等原因造成的打印系统固有缺陷所带来的影响，能够更加直接地得出具有操作性的调整参数，从而减少计算量，加快反应时间。一般而言，即使第二打印图像的已经打印出的那部分与第一打印图像相应部分之间存在一定的错位现象，但是由于图像修正的速度远快于打印机的进给速度，因此发生错位的图像部分的比例会得到控制，不会对打印产品的整体质量产生明显影响。
以下描述本发明的另一实施例。根据本实施例的双面打印方法包括图3实施例的双面打印方法的301的一个示例，具体包括：
通过扫描设备扫描第一打印图像和已经在承印材料的第二面上打印出的第二打印图像；
其中，扫描设备设置在用于打印第二打印图像的第二打印机的打印小车上，并随打印小车移动，扫描设备的扫描镜头对准承印材料的已经经过第二打印机打印的部分或者正在被所述第二打印机打印的部分。
在本实施例中，扫描设备可以指通过镜头左右移动方式将图形图像转换为模拟信号或数字信号的设备。通过采用跟随打印小车运动的扫描设备采集第一打印图像和已打印出的第二打印图像的信息，能够充分利用打印设备的运动和打印时间，精确读取第一打印图像的各个部分的细节，从而能够准确判断出打印图像的几何变化信息。
当扫描镜头对准承印材料已经经过第二打印机打印的部分时，由于扫描设备对承印材料的表面纹理、明暗变化等特征捕捉得更加精确，因此可以通过一台扫描设备来同时采集正反两面的图像，即同时采集面对扫描设备镜头的正面图像和从背面透过来的反面图像。这有利于节约设备资源，降低设备成本，提高生产效益。
当扫描镜头对准正在被第二打印机打印的部分时，通过对正在被打印的第二打印图像的部分进行扫描，能够更加快速及时地发现第二打印图像的偏差，从而 缩短从发现第一打印图像与已打印的第二打印图像之间的几何差异到调整第二原稿所经历的时间，减少已经产生错位的图像部分，有利于提高打印产品的整体质量。
关于本实施例的其它细节，参见下文有关双面打印系统的描述。
以下描述本发明的另一实施例。根据本实施例的双面打印方法包括图3实施例的双面打印方法的301的一个示例，具体包括：
通过至少一个拍摄设备拍摄第一打印图像和已经在所述承印材料的第二面上打印出的第二打印图像；
其中，所述至少一个拍摄设备设置在用于打印第二打印图像的第二打印机上方，所述至少一个拍摄设备的拍摄镜头对准承印材料的已经经过第二打印机打印的部分或者正在被所述第二打印机打印的部分。
在本实施例中，拍摄设备可以是通过固定镜头将图形图像转换为模拟信号或数字信号的设备。通过采用固定镜头拍摄第一打印图像和已经打印出的第二打印图像，能够更加快速有效地获取第一打印图像和已经打印出的第二打印图像的整体情况，从而为第二面打印的参数调整预留充足的时间。
当拍摄镜头对准正在被第二打印机打印的部分时，通过对正在被打印的第二打印图像的部分进行拍摄，能够更加快速及时地发现第二打印图像的偏差。
在本实施例中，所述至少一个拍摄设备可以是指一个拍摄设备，也可以是指多个拍摄设备。当有多个拍摄设备拍摄第一打印图像时，能够更加全面地获取第一打印图像和已经打印出的第二打印图像的位置、形状和尺寸信息，从而更加全面准确地判断已经打印出的第二打印图像相对于第一打印图像的几何变化信息。
关于本实施例的其它细节，参见下文有关双面打印系统的描述。
图4示出根据本发明一实施例的双面打印方法的流程图。根据本实施例的双面打印方法包括根据图1实施例的双面打印方法的101的一个示例，具体包括：
401、接收用户的输入；
402、根据用户的输入预先确定第一打印图像与将要打印出的第二打印图像之间的几何差异；
其中，用户的输入是所述用户通过对比第一打印图像和已经在承印材料的第二面上打印出的第二打印图像确定的。
在本实施例中，用户可以是指执行双面打印方法的操作人员，或者是双面打印系统的使用人员。在本实施例中，用户的输入可以是指，用户将能够体现第一打印图像和将要打印出的第二打印图像在形状、尺寸和位置上的差异的参数输入至控制器中，所述参数例如是形状扭曲变化量、尺寸缩放量、位置偏移量等等。在本实施例中，根据用户输入预先确定几何差异，可以是指直接将用户的输入作为几何差异的数值，也可以是指根据具体情况，将用户的输入进行适当调整之后 再作为几何差异的数值。在本实施例中，用户对第一打印图像和已经打印出的第二打印图像进行对比，可以是直接用肉眼进行观察对比，也可以是使用观察工具(例如放大镜或电子观察设备)进行对比。
在本实施例中，通过用户输入得出几何差异以用于调整第二原稿，能够免去图像采集设备和打印控制器中图像比对模块的设置，有利于节约设备资源。特别是对于发生正反面图像错位现象并不频繁的打印场景(例如广告打印)而言，采用人工而非自动化设备判别正反面对位误差是比较经济且有效的做法。
以下结合图5至图8详述根据本发明多个实施例的双面打印系统。
图5示出根据本发明一实施例的双面打印系统的结构示意图。据本实施例，双面打印系统包括：
双面打印装置500，用于实现双面打印；
控制器(未示出)，用于预先确定基于第一原稿在承印材料510的第一面上打印出的第一打印图像与在承印材料510的第二面上将要打印出的第二打印图像之间的几何差异，并根据几何差异对第二打印图像的第二原稿进行调整，以使双面打印装置500打印出的第一打印图像与所述第二打印图像对准。
在本实施例中，双面打印装置500可以是指用于在承印材料510的正反面上施加印墨以形成打印图像的装置。特别地，双面打印装置500可以是指能够实现同步双面打印的装置，即能够在承印材料510的一个完整进给过程中同时或先后实现正反两面打印的装置。在本实施例中，控制器可以是指能够控制双面打印装置的打印效果并且具有图像修正功能的打印控制器。
在本实施例中，通过控制器预先确定第一打印图像与将要打印的第二打印图像之间的几何差异，能够全面判断承印材料正反两面上的图像之间的偏移量，掌握二者在位置、形状和尺寸上的差异，从而能够更加准确地对齐正反两面的图像。另外，控制器的使用能够使整个偏移判断和图像修正过程自动实现，有利于减少人工成本，提高打印效率。
关于本实施例的其它细节，参见上文有关图1实施例的描述。
根据本发明的一实施例，双面打印装置500包括：
第一打印机520，第一打印机布置在双面打印的走料路径的第一位置，用于在控制器的控制下，根据第一原稿在承印材料510的第一面打印出第一打印图像；
第二打印机530，第二打印机布置在所述走料路径中的第二位置，用于在控制器的控制下，根据调整后的第二原稿在承印材料510的第二面打印出第二打印图像。
在本实施例中，第一打印机520包括第一打印小车521和设置在第一打印小车下方的第一打印平台522，第二打印机530包括第二打印小车531和设置在第二打印小车下方第二打印平台532。在本实施例中，打印小车可以安装在轨道梁 上，轨道梁可以安装在打印机架上。在本实施例中，打印小车可以沿轨道梁往复运动。在本实施例中，第一和第二打印机可以是喷墨打印机、激光打印机和针式打印机等。
关于本实施例的优点和其它细节，参见上文有关第一位置和第二位置的描述。
根据本发明的一实施例，双面打印装置500包括：
放料辊540和收料辊550，承印材料510在放料辊540和收料辊550之间形成走料路径；
导料辊560，设置在走料路径的各个折点处，用于改变承印材料510的走料方向；
送料辊570，设置在所述放料辊540与所述收料辊550之间，用于在电机的驱动下带动承印材料510步进。
在本实施例中，放料辊540用于将承印材料释放出来以供打印，收料辊550用于将打印过的承印材料重新收集起来。送料辊570具有动力装置，例如电机，从而能够为承印材料提供动力，使其在放料辊与收料辊之间保持平顺运动。在图5中，送料辊570总是成对出现，承印材料510以S形经过成对的送料辊，从而实现承印材料的翻转换面。导料辊560用于引导承印材料的运动方向，为承印材料在走料路径中的转折提供支撑。
在本实施例中，通过设置不同的辊用于引导承印材料在走料路径中的运动，有利于提高承印材料的进给的稳定性，并有利于提高双面打印的效率。
根据本发明的一实施例，双面打印系统还包括：
扫描设备501，扫描设备用于扫描第一打印图像；
其中，控制器对比第一打印图像与第一原稿，获取第一打印图像相对于第一原稿的几何变化信息，从而预先确定第一打印图像与将要打印出的第二打印图像之间的几何差异。
关于本实施例的优点和其它细节，参见上文关于图2实施例的201所描述的内容。
根据本发明的一实施例，扫描设备501设置在第二打印机530的打印小车上，并随打印小车移动，扫描设备501的扫描镜头对准承印材料510的尚未经过第二打印机530打印的部分。
如图5所示，扫描设备501设置在第二打印机530的第二打印小车531上，并随第二打印小车531在轨道梁上移动，从而在第二打印小车531打印的同时对承印材料进行扫描。当扫描设备501的镜头对准承印材料510的尚未经过第二打印机530打印的部分时，扫描设备仅能扫描到承印材料510第一面上的第一打印图像。由于此时承印材料510第一面朝向下方，因此扫描设备501扫描的是从背面透过来的图像。
使用扫描设备扫描第一打印图像，能够充分利用打印机的打印第二面的时间，从背面对第一打印图像的几何形态进行精确读取，从而准确计算出第一打印图像相对于第一原稿的几何差异，以供后续调整。
根据本发明的一实施例，双面打印系统还包括：
扫描设备501，用于扫描第一打印图像和已经在承印材料510的第二面上打印出的第二打印图像；
其中，控制器对比第一打印图像和已经打印出的第二打印图像，获取已经打印出的第二打印图像相对于所述第一打印图像的几何变化信息，从而预先确定第一打印图像与将要打印出的第二打印图像之间的几何差异。
关于本实施例的优点和其它细节，参见上文关于图3实施例的301所描述的内容。
根据本发明的一实施例，扫描设备501设置在第二打印机530的打印小车上，并随打印小车移动，扫描设备501的扫描镜头对准承印材料510的已经经过第二打印机530打印的部分或者正在被第二打印机530打印的部分。
如图5所示，扫描设备501设置在第二打印机530的第二打印小车531上，并随第二打印小车531在轨道梁上移动，从而在第二打印小车531打印的同时对承印材料进行扫描。
当扫描设备501的镜头对准承印材料510的已经经过第二打印机530的部分时，扫描设备能够扫描到承印材料510第一面上的第一打印图像和承印材料510第二面上的已经打印出的第二打印图像。由于此时承印材料510第一面朝向下方，因此扫描设备501能够同时扫描正面的第二打印图像和从背面透过来的第一打印图像。利用扫描装置扫描已经打印出来的第二打印图像和第一打印图像，能够消除打印系统的固有误差，直接对打印出来的图像效果进行比对，从而得到更为客观真实的几何偏差，为后续的图像修正提供更为可靠的依据。
当扫描设备501的镜头对准承印材料510的已正在被第二打印机530打印的部分时，扫描设备能够扫描到承印材料510第一面上的第一打印图像和承印材料510第二面上的正在打印的第二打印图像。通过扫描正在被打印的第二打印图像，能够缩短从识别出几何差异到调整第二原稿所经历的时间，有利于减小已经打印出并且已经相对于第一打印图像发生偏移的第二打印图像的那部分的面积占比，从而提高打印产品的整体质量。
图6示出根据本发明一实施例的双面打印系统的结构示意图。在本实施例中，扫描设备601同样设置在第二打印机630的第二打印小车631上，并随第二打印小车631在轨道梁上移动。本实施例与图5实施例的区别在于，承印材料的走料路径不一样，打印机和各个辊的位置也不一样。图5实施例中的承印材料510大致从左上方运动至右下方，本实施例中的承印材料610大致从右上方运动至右下 方。图5实施例中的第一打印机520和第二打印机530呈左右布置形式，本实施例中的第一打印机620和第二打印机630呈上下布置形式。除此之外，图6实施例与图5实施例基本相同，不再赘述。
图7示出根据本发明一实施例的双面打印系统的结构示意图。除以下描述内容外，图7实施例的细节与图6实施例基本相同，不再赘述。根据本实施例，双面打印系统还包括：
至少一个拍摄设备701，所述至少一个拍摄设备用于拍摄所述第一打印图像；
其中，控制器对比第一打印图像与第一原稿，获取第一打印图像相对于第一原稿的几何变化信息，从而预先确定第一打印图像与将要打印出的第二打印图像之间的几何差异。
关于本实施例的优点和其它细节，参见上文关于图2实施例的201所描述的内容。
根据本发明的一实施例，所述至少一个拍摄设备701在走料路径上设置在第一打印机720和第二打印机730之间。
如图7所示，拍摄设备701沿走料路径布置，并且设置在承印材料710的下方，镜头朝向承印材料710的第一面。在本实施例中，将拍摄设备701设置在第一打印机720和第二打印机730之间，能够在第二打印机730打印之前就拍摄到第一打印图像，并且通过对比第一打印图像和第一原稿得出图像的几何变化量。这有利于尽早消除第二打印图像发生偏移的可能性，提高打印产品的对位质量。
在图7中，拍摄设备701靠近第二打印机730布置在第一打印机720和第二打印机730之间，这是为了让刚经过第一打印机720的承印材料有更多时间发生形变，从而在拍摄时能够抓取到更为准确的几何变化量。当然，在其他实施例中，拍摄设备701也可以靠近第一打印机730布置在第一打印机720和第二打印机730之间。
图8示出根据本发明一实施例的双面打印系统的结构示意图。除以下描述的内容以外，图8实施例与图7实施例基本相同，不再赘述。根据本实施例，双面打印系统还包括：
至少一个拍摄设备801，用于拍摄第一打印图像和已经在承印材料810的第二面上打印出的第二打印图像；
其中，控制器对比所述第一打印图像和已经打印出的第二打印图像，获取已经打印出的第二打印图像相对于第一打印图像的几何变化信息，从而预先确定第一打印图像与将要打印出的第二打印图像之间的几何差异。
关于本实施例的优点和其它细节，参见上文有关图3实施例的描述内容。
根据本发明的一实施例，所述至少一个拍摄设备801设置在第二打印机830上方，所述至少一个拍摄设备801的拍摄镜头对准承印材料810的已经经过第二 打印机830打印的部分或者正在被第二打印机830打印的部分。
如图8所示，第一打印机820设置在承印材料810的走料路径的上游，第二打印机830设置在走料路径的下游。拍摄设备801固定设置在第二打印机830的上方，并且不随第二打印机830的打印小车移动。
关于本实施例的优点和其它细节，参见上文有关图3实施例的301所描述的内容。
根据本发明的一实施例，控制器接收用户的输入，并根据用户的输入预先确定第一打印图像与将要打印出的第二打印图像之间的几何差异，其中用户的输入是用户通过对比第一打印图像和已经在所述承印材料的第二面上打印出的第二打印图像确定的。
关于本实施例的优点和其它细节，参见上文有关图4实施例的描述内容。
本领域技术人员可以理解，虽然以上具体实施方式(包括实施例和实例)介绍了双面打印系统的若干功能模块，但是这种划分并非是强制性的。实际上，根据本发明的实施方式，上文描述的两个或更多模块的特征和功能可以在一个模块中具体化。反之，上文描述的一个模块的特征和功能可以进一步划分为由多个模块来具体化。本领域技术人员可以理解，本发明的技术方案可以用软件来实现，具体而言，可以是计算机程序的方式实现。比如，在类似RAM、ROM、硬盘和/或任何适当的存储介质中存储可执行代码，当该可执行代码被执行时，可以实现本发明以上实施例提及的功能。
应当注意，本发明的实施方式还可以通过硬件或者软件和硬件的结合来实现。硬件部分可以利用专用逻辑来实现；软件部分可以存储在存储器中，由适当的指令执行系统，例如微处理器或者专用设计硬件来执行。本领域的普通技术人员可以理解上述的装置和方法可以使用计算机可执行指令和/或包含在处理器控制代码中来实现，例如在诸如磁盘、CD或DVD-ROM的载体介质、诸如只读存储器(固件)的可编程的存储器或者诸如光学或电子信号载体的数据载体上提供了这样的代码。本发明的装置及其模块可以由诸如超大规模集成电路或门阵列、诸如逻辑芯片、晶体管等的半导体、或者诸如现场可编程门阵列、可编程逻辑设备等的可编程硬件设备的硬件电路实现，也可以用由各种类型的处理器执行的软件实现，也可以由上述硬件电路和软件的结合例如固件来实现。
以上结合具体实施方式详细描述了本发明的概念、原理和思想。本领域技术人员应理解，本发明的实施方式不止上文给出的这几种形式，本领域技术人员在阅读本申请文件以后，可以对上述实施方式中的步骤、方法、装置、部件做出任何可能的改进、替换和等同形式，这些改进、替换和等同形式应视为落入在本发明的范围内。本发明的保护范围仅以权利要求书为准。

Claims (21)

  1. 一种双面打印的方法，其特征在于，包括：
    预先确定基于第一原稿在承印材料的第一面上打印出的第一打印图像与基于第二原稿在所述承印材料的第二面上将要打印出的第二打印图像之间的几何差异；
    根据所述几何差异对所述第二原稿进行调整，以使所述第一打印图像与所述第二打印图像对准。
  2. 根据权利要求1所述的方法，其特征在于，还包括：
    在双面打印的走料路径的第一位置，基于所述第一原稿在所述第一面上打印出所述第一打印图像；
    在双面打印的走料路径的第二位置，基于调整后的所述第二原稿在所述第二面上打印出所述第二打印图像。
  3. 根据权利要求1或2所述的方法，其特征在于，所述预先确定基于第一原稿在承印材料的第一面上打印出的第一打印图像与将基于第二原稿在所述承印材料的第二面上打印出的第二打印图像之间的几何差异，包括：
    扫描或拍摄所述第一打印图像；
    对比所述第一打印图像与所述第一原稿，获取所述第一打印图像相对于所述第一原稿的几何变化信息，从而预先确定所述第一打印图像与将要打印出的第二打印图像之间的几何差异。
  4. 根据权利要求3所述的方法，其特征在于，所述扫描或拍摄所述第一打印图像，包括：
    通过扫描设备扫描所述第一打印图像；
    其中，所述扫描设备设置在用于打印所述第二打印图像的第二打印机的打印小车上，并随所述打印小车移动，所述扫描设备的扫描镜头对准所述承印材料的尚未经过所述第二打印机打印的部分。
  5. 根据权利要求3所述的方法，其特征在于，所述扫描或拍摄所述第一打印图像，包括：
    通过至少一个拍摄设备拍摄所述第一打印图像；
    其中，所述至少一个拍摄设备在所述走料路径上设置在用于打印所述第一打印图像的第一打印机和用于打印所述第二打印图像的所述第二打印机之间。
  6. 根据权利要求1或2所述的方法，其特征在于，所述预先确定基于第一原稿在承印材料的第一面上打印出的第一打印图像与将基于第二原稿在所述承印材料的第二面上打印出的第二打印图像之间的几何差异，包括：
    扫描或拍摄所述第一打印图像和已经在所述承印材料的第二面上打印出的第二打印图像；
    对比所述第一打印图像和已经打印出的所述第二打印图像，获取已经打印出的所述第二打印图像相对于所述第一打印图像的几何变化信息，从而预先确定所述第一打印图像与将要打印出的第二打印图像之间的几何差异。
  7. 根据权利要求6所述的方法，其特征在于，所述扫描或拍摄所述第一打印图像和已经在所述承印材料的第二面上打印出的第二打印图像，包括：
    通过扫描设备扫描所述第一打印图像和已经在所述承印材料的第二面上打印出的第二打印图像；
    其中，所述扫描设备设置在用于打印所述第二打印图像的第二打印机的打印小车上，并随所述打印小车移动，所述扫描设备的扫描镜头对准所述承印材料的已经经过所述第二打印机打印的部分或者正在被所述第二打印机打印的部分。
  8. 根据权利要求6所述的方法，其特征在于，所述扫描或拍摄所述第一打印图像和已经在所述承印材料的第二面上打印出的第二打印图像，包括：
    通过至少一个拍摄设备拍摄所述第一打印图像和已经在所述承印材料的第二面上打印出的第二打印图像；
    其中，所述至少一个拍摄设备设置在用于打印所述第二打印图像的第二打印机上方，所述至少一个拍摄设备的拍摄镜头对准所述承印材料的已经经过所述第二打印机打印的部分或者正在被所述第二打印机打印的部分。
  9. 根据权利要求1或2所述的方法，其特征在于，所述预先确定基于第一原稿在承印材料的第一面上打印出的第一打印图像与将基于第二原稿在所述承印材料的第二面上打印出的第二打印图像之间的几何差异，包括：
    接收用户的输入；
    根据所述用户的输入预先确定所述第一打印图像与将要打印出的第二打印图像之间的几何差异；
    其中，所述用户的输入是所述用户通过对比所述第一打印图像和已经在所述承印材料的第二面上打印出的第二打印图像确定的。
  10. 一种双面打印系统，其特征在于，包括：
    双面打印装置，用于实现双面打印；
    控制器，用于预先确定基于第一原稿在承印材料的第一面上打印出的第一打印图像与在所述承印材料的第二面上将要打印出的第二打印图像之间的几何差异，并根据所述几何差异对第二打印图像的第二原稿进行调整，以使所述双面打印装置打印出的所述第一打印图像与所述第二打印图像对准。
  11. 根据权利要求10所述的双面打印系统，其特征在于，所述双面打印装置包括：
    第一打印机，所述第一打印机布置在双面打印的走料路径的第一位置，用于在所述控制器的控制下，根据所述第一原稿在所述承印材料的第一面打印出所述第一打印图像；
    第二打印机，所述第二打印机布置在所述走料路径中的第二位置，用于在所述控制器的控制下，根据调整后的所述第二原稿在所述承印材料的第二面打印出所述第二打印图像。
  12. 根据权利要求11所述的双面打印系统，其特征在于，所述双面打印装置包括：
    放料辊和收料辊，所述承印材料在放料辊和收料辊之间形成走料路径；
    导料辊，设置在所述走料路径的各个折点处，用于改变所述承印材料的走料方向；
    送料辊，设置在所述放料辊与所述收料辊之间，用于在电机的驱动下带动所述承印材料步进。
  13. 根据权利要求11或12所述的双面打印系统，其特征在于，还包括：
    扫描设备，所述扫描设备用于扫描所述第一打印图像；
    其中，所述控制器对比所述第一打印图像与所述第一原稿，获取所述第一打印图像相对于所述第一原稿的几何变化信息，从而预先确定所述第一打印图像与将要打印出的第二打印图像之间的几何差异。
  14. 根据权利要求13所述的双面打印系统，其特征在于，所述扫描设备设置在所述第二打印机的打印小车上，并随所述打印小车移动，所述扫描设备的扫描镜头对准所述承印材料的尚未经过所述第二打印机打印的部分。
  15. 根据权利要求11或12所述的双面打印系统，其特征在于，还包括：
    扫描设备，用于扫描所述第一打印图像和已经在所述承印材料的第二面上打印出的第二打印图像；
    其中，所述控制器对比所述第一打印图像和已经打印出的所述第二打印图像，获取已经打印出的所述第二打印图像相对于所述第一打印图像的几何变化信息，从而预先确定所述第一打印图像与将要打印出的第二打印图像之间的几何差异。
  16. 根据权利要求15所述的双面打印系统，其特征在于，所述扫描设备设置在所述第二打印机的打印小车上，并随所述打印小车移动，所述扫描设备的扫描镜头对准所述承印材料的已经经过所述第二打印机打印的部分或者正在被所述第二打印机打印的部分。
  17. 根据权利要求11或12所述的双面打印系统，其特征在于，还包括：
    至少一个拍摄设备，所述至少一个拍摄设备用于拍摄所述第一打印图像；
    其中，所述控制器对比所述第一打印图像与所述第一原稿，获取所述第一打印图像相对于所述第一原稿的几何变化信息，从而预先确定所述第一打印图像与 将要打印出的第二打印图像之间的几何差异。
  18. 根据权利要求17所述的双面打印系统，其特征在于，所述至少一个拍摄设备在所述走料路径上设置在所述第一打印机和所述第二打印机之间。
  19. 根据权利要求11或12所述的双面打印系统，其特征在于，还包括：
    至少一个拍摄设备，用于拍摄所述第一打印图像和已经在所述承印材料的第二面上打印出的第二打印图像；
    其中，所述控制器对比所述第一打印图像和已经打印出的所述第二打印图像，获取已经打印出的所述第二打印图像相对于所述第一打印图像的几何变化信息，从而预先确定所述第一打印图像与将要打印出的第二打印图像之间的几何差异。
  20. 根据权利要求19所述的双面打印系统，其特征在于，所述至少一个拍摄设备设置在所述第二打印机上方，所述至少一个拍摄设备的拍摄镜头对准所述承印材料的已经经过所述第二打印机打印的部分或者正在被所述第二打印机打印的部分。
  21. 根据权利要求11或12所述的双面打印系统，其特征在于，所述控制器接收用户的输入，并根据用户的输入预先确定所述第一打印图像与将要打印出的第二打印图像之间的几何差异，其中所述用户的输入是所述用户通过对比所述第一打印图像和已经在所述承印材料的第二面上打印出的第二打印图像确定的。
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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113524927B (zh) * 2018-09-25 2023-08-25 沈阳飞行船数码喷印设备有限公司 双面打印的方法和系统
CN112123953B (zh) * 2020-07-20 2022-06-21 沈阳飞行船数码喷印设备有限公司 双面打印方法
CN113733762A (zh) * 2021-07-30 2021-12-03 北京中电元德科技有限责任公司 一种双面数码喷墨打印装置
CN117584641B (zh) * 2024-01-19 2024-03-29 山东盈科杰数码科技有限公司 一种高速轮转喷墨印刷机正背套印精度的控制方法和装置
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1749020A (zh) * 2004-07-30 2006-03-22 三星电子株式会社 用于校正成像设备图像对准的方法和装置
CN1804783A (zh) * 2005-01-14 2006-07-19 佳能株式会社 打印系统和作业处理方法
CN102729627A (zh) * 2012-06-28 2012-10-17 深圳市润天智数字设备股份有限公司 一种双面镜像喷绘方法
US20130050329A1 (en) * 2011-08-25 2013-02-28 Ronald J. Duke Registering patterns on multiple media sides
CN104129174A (zh) * 2014-01-01 2014-11-05 晏石英 一种智能打印方法及智能打印机/打印系统
CN105682929A (zh) * 2013-10-28 2016-06-15 伊斯曼柯达公司 具有前和后成像系统的打印机
CN107249895A (zh) * 2015-01-29 2017-10-13 惠普发展公司，有限责任合伙企业 生成日/夜图像
CN109177526A (zh) * 2018-09-25 2019-01-11 沈阳飞行船数码喷印设备有限公司 双面打印的方法和系统

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11300949A (ja) * 1998-04-27 1999-11-02 Canon Inc 画像形成装置および画像形成方法
US6499822B1 (en) * 1998-04-27 2002-12-31 Canon Kabushiki Kaisha Method and apparatus for forming an image on a recording medium with contraction and expansion properties
JP3630979B2 (ja) * 1998-04-27 2005-03-23 キヤノン株式会社 画像形成装置
KR100601665B1 (ko) 2004-03-23 2006-07-14 삼성전자주식회사 미리보기 기능을 이용한 양면인쇄 방법 및 장치
CN200977758Y (zh) * 2006-10-18 2007-11-21 梁健 一种同步双面数码印刷机
EP1939005A1 (en) * 2006-12-28 2008-07-02 Agfa Graphics N.V. Synchronisation of front and back side printing in double sided inkjet web printing
JP2008299083A (ja) * 2007-05-31 2008-12-11 Konica Minolta Business Technologies Inc 画像形成装置
US20130104760A1 (en) * 2010-06-24 2013-05-02 Hewlett-Packard Development Company, L.P. Web press and a method of duplex printing
US8662623B2 (en) * 2011-08-25 2014-03-04 Eastman Kodak Company Printing registered patterns on multiple media sides
US8833904B2 (en) * 2012-02-20 2014-09-16 Eastman Kodak Company Automated print and image capture position adjustment
JP6573305B2 (ja) * 2015-03-25 2019-09-11 株式会社ミマキエンジニアリング インクジェットプリントシステム
JP2017052098A (ja) * 2015-09-07 2017-03-16 株式会社ミマキエンジニアリング インクジェットプリンター
CN108032620B (zh) * 2017-12-01 2019-09-03 杭州宏华数码科技股份有限公司 利用数码喷印机的纺织品的双面喷墨印花方法及纺织品

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1749020A (zh) * 2004-07-30 2006-03-22 三星电子株式会社 用于校正成像设备图像对准的方法和装置
CN1804783A (zh) * 2005-01-14 2006-07-19 佳能株式会社 打印系统和作业处理方法
US20130050329A1 (en) * 2011-08-25 2013-02-28 Ronald J. Duke Registering patterns on multiple media sides
CN102729627A (zh) * 2012-06-28 2012-10-17 深圳市润天智数字设备股份有限公司 一种双面镜像喷绘方法
CN105682929A (zh) * 2013-10-28 2016-06-15 伊斯曼柯达公司 具有前和后成像系统的打印机
CN104129174A (zh) * 2014-01-01 2014-11-05 晏石英 一种智能打印方法及智能打印机/打印系统
CN107249895A (zh) * 2015-01-29 2017-10-13 惠普发展公司，有限责任合伙企业 生成日/夜图像
CN109177526A (zh) * 2018-09-25 2019-01-11 沈阳飞行船数码喷印设备有限公司 双面打印的方法和系统

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