US20140267475A1 - Image processing apparatus, image forming apparatus, non-transitory computer readable medium, and image processing method - Google Patents
Image processing apparatus, image forming apparatus, non-transitory computer readable medium, and image processing method Download PDFInfo
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- US20140267475A1 US20140267475A1 US13/971,528 US201313971528A US2014267475A1 US 20140267475 A1 US20140267475 A1 US 20140267475A1 US 201313971528 A US201313971528 A US 201313971528A US 2014267475 A1 US2014267475 A1 US 2014267475A1
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- 238000012545 processing Methods 0.000 title claims abstract description 28
- 238000003672 processing method Methods 0.000 title claims description 3
- 238000007639 printing Methods 0.000 claims abstract description 66
- 238000000034 method Methods 0.000 claims description 33
- 238000012360 testing method Methods 0.000 claims description 4
- 238000012800 visualization Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 16
- 238000007641 inkjet printing Methods 0.000 description 9
- 239000000975 dye Substances 0.000 description 7
- 238000004891 communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007645 offset printing Methods 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
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Classifications
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- 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
- B41J3/01—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for special character, e.g. for Chinese characters or barcodes
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- 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
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/07—Ink jet characterised by jet control
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K1/00—Methods or arrangements for marking the record carrier in digital fashion
- G06K1/12—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching
- G06K1/121—Methods or arrangements for marking the record carrier in digital fashion otherwise than by punching by printing code marks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
- G06K15/002—Interacting with the operator
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K15/00—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers
- G06K15/02—Arrangements for producing a permanent visual presentation of the output data, e.g. computer output printers using printers
- G06K15/027—Test patterns and calibration
Definitions
- the present invention relates to an image processing apparatus, an image forming apparatus, a non-transitory computer readable medium, and an image processing method.
- an image processing apparatus including a memory, a receiving unit, a detector, a generation unit, a determination unit, and an alert unit.
- the memory stores output characteristic information, which is information on image output characteristics of a printer, which is a printer specified for output.
- the receiving unit receives a print command.
- the detector detects a one-dimensional code in accordance with a print command received by the receiving unit.
- the generation unit generates print data in accordance with a print command received by the receiving unit.
- the determination unit determines, in a case where a one-dimensional code whose data is included in print data generated by the generation unit has been detected by the detector, whether or not a printer, which is a printer specified for output, is capable of printing the one-dimensional code with a predetermined print quality or higher by referring to the output characteristic information stored in the memory.
- the alert unit issues an alert in a case where the determination unit determines that the printer, which is a printer specified for output, is incapable of printing the one-dimensional code with the predetermined print quality or higher.
- FIG. 1 is a diagram used to describe output characteristics of a printer
- FIGS. 2A and 2B are diagrams used to describe a relationship between the orientation of a barcode and output characteristics of the printer
- FIG. 3 is a diagram illustrating an image forming system according to an exemplary embodiment of the invention.
- FIG. 4 is a block diagram illustrating a hardware configuration of a proofing printer according to the exemplary embodiment of the invention.
- FIG. 5 is a block diagram illustrating a functional configuration of the proofing printer according to the exemplary embodiment of the invention.
- FIG. 6 is a diagram illustrating an example of output characteristic information on a printer according to the exemplary embodiment of the invention.
- FIG. 7 is a diagram illustrating an example of a determination table stored in a storage unit according to the exemplary embodiment of the invention.
- FIG. 8 is a flowchart illustrating overall operation of the proofing printer according to the exemplary embodiment of the invention.
- FIG. 9 is a flowchart illustrating alert processing performed by the proofing printer according to the exemplary embodiment of the invention.
- FIG. 10 is a diagram illustrating an example of the case where a user is alerted by an alert screen indicating that a barcode that may be printed with a print quality lower than a predetermined print quality may be included in a printed result;
- FIG. 11 is a diagram illustrating an example of alert information according to the exemplary embodiment of the invention.
- FIG. 12 is a diagram illustrating another example of alert information according to the exemplary embodiment of the invention and is a diagram illustrating an example of an alert screen according to the exemplary embodiment of the invention.
- an inkjet printer prints a thin line such as a one-dot line
- a direction in which printing of a one-dot line is difficult
- a printed line tends to be wavy as illustrated in FIG. 1 due to the landing timing of or the landing deviation of discharged ink droplets, spreading of ink, or the like.
- printed results tend to be affected by the landing timing of or the landing deviation of discharged ink droplets more greatly in line-head type printing than in serial-head type printing.
- line-head type printing printing is performed by a fixed print head in which nozzles from which ink is discharged are arranged in rows parallel to one another.
- serial-head type printing printing is performed by moving a print head in directions perpendicular to the sheet transportation direction such that the print head reciprocates.
- printers each have, as an output characteristic, a direction in which it is impossible to realize printing of an accurate line.
- a printer when a barcode is printed, there are printers that may degrade the print quality of the barcode, depending on the orientation of the barcode. For example, a printer will be described that has no issue when a line that extends in a direction parallel to the sheet transportation direction is printed but is not capable of printing an accurate line when a line extends in a direction perpendicular to the sheet transportation direction. With such a printer, as illustrated in FIG. 2A , there is no issue when a barcode whose lines extend in a direction parallel to the sheet transportation direction is printed. However, as illustrated in FIG. 2B , a barcode whose lines extend in a direction perpendicular to the sheet transportation direction is printed, printed lines tend to be wavy and a read error tends to occur when such a printed barcode is read.
- the print quality of a barcode does not depend simply on the orientation of the barcode.
- the printing method, output resolution, print speed, and the like of a printer greatly affect the print quality of a barcode, too.
- the printer 1 is a large inkjet printer, which employs a line-head type printing method.
- the printer 1 outputs an image on a sheet in accordance with a print job (a print command) transmitted from the terminal apparatus 3 via the network 10 .
- the proofing printer 2 is a printer that performs, before the printer 1 outputs print data, test printing upon receiving a print job from the terminal apparatus 3 .
- the terminal apparatus 3 transmits a print job to the printer 1 or the proofing printer 2 via the network 10 in accordance with an operation performed by a user.
- the proofing printer 2 includes, as illustrated in FIG. 4 , a central processing unit (CPU) 11 , a memory 12 , a storage device 13 , a communication interface (I/F) 14 , a user interface (UI) device 15 , and a printer engine 16 .
- An example of the storage device 13 is a hard disk drive (HDD).
- the communication I/F 14 transmits and receives data to and from the terminal apparatus 3 via the network 10 .
- the UI device 15 includes a touch screen or a liquid crystal display and a keyboard. These components are connected with each other via a control bus 17 .
- the CPU 11 executes predetermined processing in accordance with a control program stored in the memory 12 or the storage device 13 , and controls operation of the proofing printer 2 .
- the CPU 11 has been described as a CPU that reads the control program stored in the memory 12 or the storage device 13 and executes the control program; however, such a program may be stored in a storage medium such as a compact disc read-only memory (CD-ROM) and provided to the CPU 11 .
- CD-ROM compact disc read-only memory
- FIG. 5 is a diagram illustrating a functional configuration of the proofing printer 2 realized by executing the above-described control program.
- the proofing printer 2 includes a print job receiving unit 21 , a print data generation unit 22 , a barcode detector 23 , a storage unit 24 , a determination unit 25 , an alert unit 26 , an alert information adding unit 27 , an output unit 28 , and the UI device 15 .
- the UI device 15 receives an operation performed by a user using a touch screen or the like.
- the print job receiving unit 21 receives a print job generated by the terminal apparatus 3 and expressed in, for example, a page description language, via the network 10 .
- the print data generation unit 22 performs various types of image processing on print data received by the print job receiving unit 21 and generates raster print data, an example of the various types of image processing being raster image processing (RIP).
- RIP raster image processing
- the print data generation unit 22 generates print data of pages, print data of each page including image data of plural pages, in accordance with the command.
- the barcode detector 23 scans and reads print data generated by the print data generation unit 22 , and detects the presence or absence of an image of a barcode.
- an image of a barcode will be simply referred to as a barcode.
- the barcode detector 23 detects the orientation of the barcode in the print data.
- the storage unit 24 stores output characteristic information, which is information on image output characteristics of the printer 1 .
- the printer 1 is a printer specified for output.
- An example of the output characteristic information on the printer 1 is illustrated in FIG. 6 .
- the output characteristic information includes information on a printing method, an output resolution, a print speed, and the like of the printer 1 .
- the output characteristic information does not have to include information on all the printing method, output resolution, and print speed. It is desirable that the output characteristic information include information on at least one of the printing method, output resolution, and print speed or information on a combination of the printing method, output resolution, and print speed.
- the example illustrated in FIG. 6 shows that the printing method of the printer 1 is “inkjet printing (dyes)”, the output resolution is “600 dpi”, and the print speed is “200 m/min”.
- the output characteristic information may be acquired directly from the printer 1 or may be input by a user.
- the output characteristic information in the exemplary embodiment is a mere example. The invention is not limited this output characteristic information.
- the storage unit 24 stores a determination table that includes conditions used to determine whether or not the printer 1 is capable of printing a certain barcode with a predetermined print quality or higher, the printer 1 being a printer specified for output.
- the determination table is illustrated in FIG. 7 .
- the determination table includes conditions used to determine whether or not a predetermined print quality or higher is achieved when printing methods such as inkjet printing (dyes), inkjet printing (pigments), xerography, and offset printing are each used.
- an output resolution, a print speed, and the orientation of a barcode (hereinafter also referred to as a “barcode orientation”) are set as conditions.
- the orientation of a barcode refers to the direction in which lines (thin lines) of the barcode extend with respect to the sheet transportation direction.
- the printing method “inkjet printing (dyes)” has conditions, which have been set, such as “1200 dpi or higher” in the “output resolution” column, “150 m/min or higher” in the “print speed” column, and “perpendicular” in the “barcode orientation” column.
- the printing method “inkjet printing (pigments)” has conditions, which have been set, such as “1200 dpi or higher” in the “output resolution” column, “200 m/min or higher” in the “print speed” column, and “perpendicular” in the “barcode orientation” column.
- the printing method “xerography” has conditions, which have been set, such as “1200 dpi or higher” in the “output resolution” column and “200 m/min or higher” in the “print speed” column.
- the printing method “offset printing” has conditions, which have been set, such as “2400 dpi or higher” in the “output resolution” column and “200 m/min or higher” in the “print speed” column.
- the determination table may be set by an input operation performed to the UI device 15 by a user or may be stored in the proofing printer 2 in advance.
- the determination table in the exemplary embodiment is a mere example, and thus the invention is not limited these conditions.
- the UI device 15 functions as a setting unit that sets an alert method to be performed by the alert unit 26 , in accordance with a user operation. Specifically, the UI device 15 sets an alert method in which an alert message is printed on a sheet for test printing, an alert method in which an alert message is displayed on the screen, or an alert method in which the color of a certain barcode is changed to, for example, red when it is determined that it is not possible to print the certain barcode with a predetermined print quality or higher. Moreover, the UI device 15 may set an alert method used in the case where plural barcodes are included in print data, the alert method being used to determine whether or not to issue an alert in accordance with the type of barcode.
- the determination unit 25 determines whether or not the printer 1 is capable of printing the barcode with a predetermined print quality or higher by referring to the output characteristic information stored in the storage unit 24 . In the exemplary embodiment, the determination unit 25 compares, as illustrated in FIGS. 6 and 7 , the output characteristic information with the determination table stored in the storage unit 24 .
- the determination unit 25 determines that the printer 1 is capable of printing the barcode with a predetermined print quality or higher. In addition, the determination unit 25 compares the output characteristic information with the determination table stored in the storage unit 24 . In the case where any of the pieces of information included in the output characteristic information and the orientation of the barcode, whose data is included in the print data generated by the print data generation unit 22 , meets the conditions included in the determination table, the determination unit 25 determines that the printer 1 is incapable of printing the barcode with the predetermined print quality or higher.
- the determination unit 25 compares conditions set for “inkjet printing (dyes)” in the determination table illustrated in FIG. 7 with pieces of information included in the output characteristic information.
- the output resolution is 600 dpi and the print speed is 200 m/min.
- the determination unit 25 determines that the printer 1 is incapable of printing the barcode detected by the barcode detector 23 with a predetermined print quality or higher.
- the printing method “inkjet printing (dyes)” in the determination table has conditions, which have been set, such as “perpendicular” in the “barcode orientation” column.
- the determination unit 25 determines that the orientation of the barcode does not meet the condition set in the “barcode orientation” column in the determination table.
- the determination unit 25 determines that the orientation of the barcode meets the condition set in the “barcode orientation” column in the determination table.
- the determination unit 25 determines that the printer 1 is incapable of printing the barcode detected by the barcode detector 23 with a predetermined print quality or higher.
- the determination unit 25 takes into account the fact that images of some pages are rotated in imposition printing. For barcodes rotated due to imposition printing, the determination unit 25 determines whether or not the orientation of each barcode meets the condition set in the “barcode orientation” column in the determination table. This is because, in the case of imposition printing, the orientation of each page on a sheet may be different from the original orientation.
- the alert unit 26 issues an alert in a method set in advance, in the case where the determination unit 25 determines that the printer 1 , which is a printer specified for output, is incapable of printing a certain barcode with a predetermined print quality or higher.
- the alert information adding unit 27 adds alert information to print data in the case where the determination unit 25 has determined that the printer 1 , which is a printer specified for output, is incapable of printing a certain barcode with a predetermined print quality or higher and the alert unit 26 has issued an alert, the alert information being used to identify the certain barcode.
- the output unit 28 outputs, on a sheet, an image based on print data to which alert information has been added by the alert information adding unit 27 .
- the proofing printer 2 stores output characteristic information on the printer 1 in the storage unit 24 in accordance with a user operation performed to the UI device 15 (in step S 101 ).
- the terminal apparatus 3 generates a print job to make the printer 1 perform actual printing.
- the terminal apparatus 3 transmits the generated print job to the proofing printer 2 so as to make the proofing printer 2 perform test printing.
- the proofing printer 2 receives the print job from the terminal apparatus 3 (in step S 102 ).
- the proofing printer 2 performs barcode alert processing in accordance with the received print job (in step S 103 ). Note that details of barcode alert processing will be described later.
- the proofing printer 2 outputs an image based on the received print job on a sheet (in step S 104 ).
- step S 103 the details of barcode alert processing in step S 103 illustrated in the flowchart of FIG. 8 will be described with reference to a flowchart illustrated in FIG. 9 .
- the print data generation unit 22 generates print data in accordance with a print job received by the print job receiving unit 21 (in step S 201 ).
- the barcode detector 23 detects a barcode from the generated print data (in step S 202 ). In the case where a barcode has been detected, the procedure proceeds to step S 204 . In the case where no barcodes have been detected, the processing is completed (in step S 203 ).
- step S 203 in the case where a barcode has been detected from the print data, the determination unit 25 refers to the output characteristic information on the printer 1 stored in the storage unit 24 and determines whether or not the printer 1 is capable of printing the barcode with a predetermined print quality or higher (in step S 204 ).
- step S 204 in the case where it is determined that the printer 1 is capable of printing the barcode with the predetermined print quality or higher (YES in step S 204 ), the processing is completed.
- step S 204 in the case where it is determined that the printer 1 is incapable of printing the barcode with the predetermined print quality or higher (NO in step S 204 ), the alert unit 26 issues an alert in an alert method set in advance (in step S 205 ).
- the alert unit 26 makes the UI device 15 display an alert screen and alerts the user that a printed result may include a barcode whose print quality is lower than the predetermined print quality.
- the alert information adding unit 27 adds alert information to the print data (in step S 206 ).
- the alert unit 26 commands the alert information adding unit 27 to change the print color of the barcode to red. Moreover, for example, the alert unit 26 commands the alert information adding unit 27 to add some kind of mark or identification information to the barcode.
- the alert information adding unit 27 may add an alert message indicating that a barcode may be incorrectly read, as alert information, to the image data.
- FIG. 10 is a diagram illustrating an example of the case where a user is alerted by an alert screen indicating that a barcode that may be printed with a print quality lower than the predetermined print quality may be included in a printed result.
- FIG. 11 is a diagram illustrating an exemplary alert in the case where one page includes two barcodes 51 and 52 and the orientation of the barcode 52 meets a condition set in the determination table.
- the determination unit 25 has determined that the orientation of the barcode 51 does not meet a condition “perpendicular” set in the “barcode orientation” column in the determination table.
- the output unit 28 outputs the barcode 51 in black.
- the determination unit 25 has determined that the orientation of the barcode 52 meets the condition “perpendicular” set in the “barcode orientation” column in the determination table.
- the alert unit 26 commands the alert information adding unit 27 to add, to image data, a command for changing the print color of the barcode 52 from black to red as alert information.
- the alert information adding unit 27 adds an alert message such as “when the red barcode is read, it may be incorrectly read.” to the image data.
- FIG. 12 is a diagram illustrating an example of the case where a box is drawn around a barcode that may be printed with a print quality lower than a predetermined print quality.
- the alert unit 26 commands the alert information adding unit 27 to add a box 53 , as alert information, around the barcode whose data is included in the print data.
- the alert information adding unit 27 adds an alert message such as “when the barcode in the box is read, it may be incorrectly read.” to the image data.
- the presence or absence of a barcode is detected by scanning and reading generated print data in the exemplary embodiment described above.
- the barcode detector 23 may detect the presence or absence of a barcode by analyzing a visualization instruction included in a print job.
- the print data generation unit 22 may generate intermediate data, and the barcode detector 23 may detect the presence or absence of a barcode by analyzing this intermediate data.
- the determination unit 25 determines whether or not the printer 1 is capable of printing a barcode with a predetermined print quality or higher by referring to output characteristic information on the printer 1 stored in the storage unit 24 in the exemplary embodiment described above, the printer 1 being a printer specified for output.
- a level at which an alert is issued may be set in accordance with the type of barcode, the line width of barcode, or the like. For example, when the lines of a barcode are thick, an alert is not issued under any conditions. Alternatively, determination as to whether an alert should be issued may be more strictly performed in the case where the lines of a barcode are thin.
- alert processing is performed in the proofing printer 2 in the exemplary embodiment described above.
- similar alert processing may be performed when image processing in which a print job is generated is performed in the terminal apparatus 3 .
- the output characteristic information on the printer 1 should be stored in the terminal apparatus 3 .
- the terminal apparatus 3 determines whether or not it is possible to print a barcode whose data is included in a print job with a predetermined print quality or higher by referring to the output characteristic information in the terminal apparatus 3 .
- the terminal apparatus 3 determines that it is impossible to print the barcode with a predetermined print quality or higher, it is desirable that an alert screen be displayed on the display screen of the terminal apparatus 3 or alert information be added to the print job.
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Abstract
Description
- This application is based on and claims priority under 35 USC 119 from Japanese Patent Application No. 2013-051837 filed Mar. 14, 2013.
- The present invention relates to an image processing apparatus, an image forming apparatus, a non-transitory computer readable medium, and an image processing method.
- According to an aspect of the invention, there is provided an image processing apparatus including a memory, a receiving unit, a detector, a generation unit, a determination unit, and an alert unit. The memory stores output characteristic information, which is information on image output characteristics of a printer, which is a printer specified for output. The receiving unit receives a print command. The detector detects a one-dimensional code in accordance with a print command received by the receiving unit. The generation unit generates print data in accordance with a print command received by the receiving unit. The determination unit determines, in a case where a one-dimensional code whose data is included in print data generated by the generation unit has been detected by the detector, whether or not a printer, which is a printer specified for output, is capable of printing the one-dimensional code with a predetermined print quality or higher by referring to the output characteristic information stored in the memory. The alert unit issues an alert in a case where the determination unit determines that the printer, which is a printer specified for output, is incapable of printing the one-dimensional code with the predetermined print quality or higher.
- An exemplary embodiment of the present invention will be described in detail based on the following figures, wherein:
-
FIG. 1 is a diagram used to describe output characteristics of a printer; -
FIGS. 2A and 2B are diagrams used to describe a relationship between the orientation of a barcode and output characteristics of the printer; -
FIG. 3 is a diagram illustrating an image forming system according to an exemplary embodiment of the invention; -
FIG. 4 is a block diagram illustrating a hardware configuration of a proofing printer according to the exemplary embodiment of the invention; -
FIG. 5 is a block diagram illustrating a functional configuration of the proofing printer according to the exemplary embodiment of the invention; -
FIG. 6 is a diagram illustrating an example of output characteristic information on a printer according to the exemplary embodiment of the invention; -
FIG. 7 is a diagram illustrating an example of a determination table stored in a storage unit according to the exemplary embodiment of the invention; -
FIG. 8 is a flowchart illustrating overall operation of the proofing printer according to the exemplary embodiment of the invention; -
FIG. 9 is a flowchart illustrating alert processing performed by the proofing printer according to the exemplary embodiment of the invention; -
FIG. 10 is a diagram illustrating an example of the case where a user is alerted by an alert screen indicating that a barcode that may be printed with a print quality lower than a predetermined print quality may be included in a printed result; -
FIG. 11 is a diagram illustrating an example of alert information according to the exemplary embodiment of the invention; and -
FIG. 12 is a diagram illustrating another example of alert information according to the exemplary embodiment of the invention and is a diagram illustrating an example of an alert screen according to the exemplary embodiment of the invention. - The barcode orientation of a barcode (one-dimensional code) and output characteristics of a printer will be first described, and then an exemplary embodiment of the invention will be described.
- For example, in the case where an inkjet printer prints a thin line such as a one-dot line, there is a direction in which printing of a one-dot line is difficult. Specifically, there is a direction in which a printed line tends to be wavy as illustrated in
FIG. 1 due to the landing timing of or the landing deviation of discharged ink droplets, spreading of ink, or the like. In particular, printed results tend to be affected by the landing timing of or the landing deviation of discharged ink droplets more greatly in line-head type printing than in serial-head type printing. In line-head type printing, printing is performed by a fixed print head in which nozzles from which ink is discharged are arranged in rows parallel to one another. In serial-head type printing, printing is performed by moving a print head in directions perpendicular to the sheet transportation direction such that the print head reciprocates. In this way, printers each have, as an output characteristic, a direction in which it is impossible to realize printing of an accurate line. - In the case where an image including thin lines such as a barcode is output, when printed lines are wavy, reading of such an output barcode may cause a read error. In particular, when a barcode to be identified on the basis of the thickness of each line, for example, a barcode based on CODE 128 is printed whose lines extend in a direction in which lines tend to be printed in a wavy manner, the probability of occurrence of read errors tends to be high when such an output barcode is read, CODE 128 being one of barcode systems.
- Thus, when a barcode is printed, there are printers that may degrade the print quality of the barcode, depending on the orientation of the barcode. For example, a printer will be described that has no issue when a line that extends in a direction parallel to the sheet transportation direction is printed but is not capable of printing an accurate line when a line extends in a direction perpendicular to the sheet transportation direction. With such a printer, as illustrated in
FIG. 2A , there is no issue when a barcode whose lines extend in a direction parallel to the sheet transportation direction is printed. However, as illustrated inFIG. 2B , a barcode whose lines extend in a direction perpendicular to the sheet transportation direction is printed, printed lines tend to be wavy and a read error tends to occur when such a printed barcode is read. - Note that the print quality of a barcode does not depend simply on the orientation of the barcode. The printing method, output resolution, print speed, and the like of a printer greatly affect the print quality of a barcode, too.
- Next, an exemplary embodiment of the invention will be described in detail with reference to the drawings.
-
FIG. 3 is a diagram illustrating a system configuration of an image forming system according to an exemplary embodiment of the invention. In the image forming system according to the exemplary embodiment, as illustrated inFIG. 3 , aprinter 1 that performs actual printing, aproofing printer 2 that has output characteristics different from those of theprinter 1, and aterminal apparatus 3 are connected with each other via anetwork 10. - The
printer 1 is a large inkjet printer, which employs a line-head type printing method. Theprinter 1 outputs an image on a sheet in accordance with a print job (a print command) transmitted from theterminal apparatus 3 via thenetwork 10. - The
proofing printer 2 is a printer that performs, before theprinter 1 outputs print data, test printing upon receiving a print job from theterminal apparatus 3. - The
terminal apparatus 3 transmits a print job to theprinter 1 or theproofing printer 2 via thenetwork 10 in accordance with an operation performed by a user. - Next, the hardware configuration of the
proofing printer 2 according to the exemplary embodiment of the invention will be described in detail with reference toFIG. 4 . - The
proofing printer 2 includes, as illustrated inFIG. 4 , a central processing unit (CPU) 11, amemory 12, astorage device 13, a communication interface (I/F) 14, a user interface (UI)device 15, and aprinter engine 16. An example of thestorage device 13 is a hard disk drive (HDD). The communication I/F 14 transmits and receives data to and from theterminal apparatus 3 via thenetwork 10. TheUI device 15 includes a touch screen or a liquid crystal display and a keyboard. These components are connected with each other via acontrol bus 17. - The
CPU 11 executes predetermined processing in accordance with a control program stored in thememory 12 or thestorage device 13, and controls operation of theproofing printer 2. Note that, in the exemplary embodiment, theCPU 11 has been described as a CPU that reads the control program stored in thememory 12 or thestorage device 13 and executes the control program; however, such a program may be stored in a storage medium such as a compact disc read-only memory (CD-ROM) and provided to theCPU 11. -
FIG. 5 is a diagram illustrating a functional configuration of theproofing printer 2 realized by executing the above-described control program. - As illustrated in
FIG. 5 , theproofing printer 2 according to the exemplary embodiment includes a printjob receiving unit 21, a printdata generation unit 22, abarcode detector 23, astorage unit 24, adetermination unit 25, analert unit 26, an alertinformation adding unit 27, anoutput unit 28, and theUI device 15. TheUI device 15 receives an operation performed by a user using a touch screen or the like. - The print
job receiving unit 21 receives a print job generated by theterminal apparatus 3 and expressed in, for example, a page description language, via thenetwork 10. - The print
data generation unit 22 performs various types of image processing on print data received by the printjob receiving unit 21 and generates raster print data, an example of the various types of image processing being raster image processing (RIP). In addition, when a print job includes a command for imposition printing, the printdata generation unit 22 generates print data of pages, print data of each page including image data of plural pages, in accordance with the command. - The
barcode detector 23 scans and reads print data generated by the printdata generation unit 22, and detects the presence or absence of an image of a barcode. Hereinafter, an image of a barcode will be simply referred to as a barcode. In addition, in the case where a barcode is detected from print data, thebarcode detector 23 detects the orientation of the barcode in the print data. - The
storage unit 24 stores output characteristic information, which is information on image output characteristics of theprinter 1. Theprinter 1 is a printer specified for output. An example of the output characteristic information on theprinter 1 is illustrated inFIG. 6 . With reference toFIG. 6 , the output characteristic information includes information on a printing method, an output resolution, a print speed, and the like of theprinter 1. Note that the output characteristic information does not have to include information on all the printing method, output resolution, and print speed. It is desirable that the output characteristic information include information on at least one of the printing method, output resolution, and print speed or information on a combination of the printing method, output resolution, and print speed. - The example illustrated in
FIG. 6 shows that the printing method of theprinter 1 is “inkjet printing (dyes)”, the output resolution is “600 dpi”, and the print speed is “200 m/min”. Note that the output characteristic information may be acquired directly from theprinter 1 or may be input by a user. Note that the output characteristic information in the exemplary embodiment is a mere example. The invention is not limited this output characteristic information. - The
storage unit 24 stores a determination table that includes conditions used to determine whether or not theprinter 1 is capable of printing a certain barcode with a predetermined print quality or higher, theprinter 1 being a printer specified for output. The determination table is illustrated inFIG. 7 . Referring toFIG. 7 , the determination table includes conditions used to determine whether or not a predetermined print quality or higher is achieved when printing methods such as inkjet printing (dyes), inkjet printing (pigments), xerography, and offset printing are each used. For each of the printing methods, an output resolution, a print speed, and the orientation of a barcode (hereinafter also referred to as a “barcode orientation”) are set as conditions. The orientation of a barcode refers to the direction in which lines (thin lines) of the barcode extend with respect to the sheet transportation direction. - In the example illustrated in
FIG. 7 , the printing method “inkjet printing (dyes)” has conditions, which have been set, such as “1200 dpi or higher” in the “output resolution” column, “150 m/min or higher” in the “print speed” column, and “perpendicular” in the “barcode orientation” column. In addition, the printing method “inkjet printing (pigments)” has conditions, which have been set, such as “1200 dpi or higher” in the “output resolution” column, “200 m/min or higher” in the “print speed” column, and “perpendicular” in the “barcode orientation” column. Furthermore, the printing method “xerography” has conditions, which have been set, such as “1200 dpi or higher” in the “output resolution” column and “200 m/min or higher” in the “print speed” column. In addition, the printing method “offset printing” has conditions, which have been set, such as “2400 dpi or higher” in the “output resolution” column and “200 m/min or higher” in the “print speed” column. Note that the determination table may be set by an input operation performed to theUI device 15 by a user or may be stored in theproofing printer 2 in advance. Here, the determination table in the exemplary embodiment is a mere example, and thus the invention is not limited these conditions. - The
UI device 15 functions as a setting unit that sets an alert method to be performed by thealert unit 26, in accordance with a user operation. Specifically, theUI device 15 sets an alert method in which an alert message is printed on a sheet for test printing, an alert method in which an alert message is displayed on the screen, or an alert method in which the color of a certain barcode is changed to, for example, red when it is determined that it is not possible to print the certain barcode with a predetermined print quality or higher. Moreover, theUI device 15 may set an alert method used in the case where plural barcodes are included in print data, the alert method being used to determine whether or not to issue an alert in accordance with the type of barcode. - In the case where a barcode or barcodes have been detected by the
barcode detector 23 from print data, for the barcode or each of the barcodes, thedetermination unit 25 determines whether or not theprinter 1 is capable of printing the barcode with a predetermined print quality or higher by referring to the output characteristic information stored in thestorage unit 24. In the exemplary embodiment, thedetermination unit 25 compares, as illustrated in FIGS. 6 and 7, the output characteristic information with the determination table stored in thestorage unit 24. In the case where pieces of information included in the output characteristic information and the orientation of the barcode, whose data is included in the print data generated by the printdata generation unit 22, do not meet conditions included in the determination table, thedetermination unit 25 determines that theprinter 1 is capable of printing the barcode with a predetermined print quality or higher. In addition, thedetermination unit 25 compares the output characteristic information with the determination table stored in thestorage unit 24. In the case where any of the pieces of information included in the output characteristic information and the orientation of the barcode, whose data is included in the print data generated by the printdata generation unit 22, meets the conditions included in the determination table, thedetermination unit 25 determines that theprinter 1 is incapable of printing the barcode with the predetermined print quality or higher. - Specifically, since the printing method is “inkjet printing (dyes)” with reference to the output characteristic information on the
printer 1 as illustrated inFIG. 6 , thedetermination unit 25 compares conditions set for “inkjet printing (dyes)” in the determination table illustrated inFIG. 7 with pieces of information included in the output characteristic information. Here, in the output characteristic information on theprinter 1, the output resolution is 600 dpi and the print speed is 200 m/min. Since the printing method “inkjet printing (dyes)” in the determination table has conditions, which have been set, such as “1200 dpi or higher” in the “output resolution” column and “150 m/min or higher” in the “print speed” column, the output resolution does not meet a condition included in the determination table; however, the print speed meets a condition included in the determination table. In this case, thedetermination unit 25 determines that theprinter 1 is incapable of printing the barcode detected by thebarcode detector 23 with a predetermined print quality or higher. - Moreover, as illustrated in
FIG. 7 , the printing method “inkjet printing (dyes)” in the determination table has conditions, which have been set, such as “perpendicular” in the “barcode orientation” column. Thus, in the case where a direction in which lines of a barcode detected by thebarcode detector 23 extend is parallel to the sheet transportation direction, thedetermination unit 25 determines that the orientation of the barcode does not meet the condition set in the “barcode orientation” column in the determination table. In the case where a direction in which lines of a barcode detected by thebarcode detector 23 extend is perpendicular to the sheet transportation direction, thedetermination unit 25 determines that the orientation of the barcode meets the condition set in the “barcode orientation” column in the determination table. As a result, thedetermination unit 25 determines that theprinter 1 is incapable of printing the barcode detected by thebarcode detector 23 with a predetermined print quality or higher. - Note that, in the case where a command for imposition printing is included in a print job, the
determination unit 25 takes into account the fact that images of some pages are rotated in imposition printing. For barcodes rotated due to imposition printing, thedetermination unit 25 determines whether or not the orientation of each barcode meets the condition set in the “barcode orientation” column in the determination table. This is because, in the case of imposition printing, the orientation of each page on a sheet may be different from the original orientation. - The
alert unit 26 issues an alert in a method set in advance, in the case where thedetermination unit 25 determines that theprinter 1, which is a printer specified for output, is incapable of printing a certain barcode with a predetermined print quality or higher. - The alert
information adding unit 27 adds alert information to print data in the case where thedetermination unit 25 has determined that theprinter 1, which is a printer specified for output, is incapable of printing a certain barcode with a predetermined print quality or higher and thealert unit 26 has issued an alert, the alert information being used to identify the certain barcode. - The
output unit 28 outputs, on a sheet, an image based on print data to which alert information has been added by the alertinformation adding unit 27. - Next, the operation of the entire image forming system according to the exemplary embodiment will be described in detail with reference to a flowchart illustrated in
FIG. 8 . - First, the proofing
printer 2 stores output characteristic information on theprinter 1 in thestorage unit 24 in accordance with a user operation performed to the UI device 15 (in step S101). - Next, the
terminal apparatus 3 generates a print job to make theprinter 1 perform actual printing. Theterminal apparatus 3 transmits the generated print job to the proofingprinter 2 so as to make the proofingprinter 2 perform test printing. Then, the proofingprinter 2 receives the print job from the terminal apparatus 3 (in step S102). - The proofing
printer 2 performs barcode alert processing in accordance with the received print job (in step S103). Note that details of barcode alert processing will be described later. - The proofing
printer 2 outputs an image based on the received print job on a sheet (in step S104). - Next, the details of barcode alert processing in step S103 illustrated in the flowchart of
FIG. 8 will be described with reference to a flowchart illustrated inFIG. 9 . - First, the print
data generation unit 22 generates print data in accordance with a print job received by the print job receiving unit 21 (in step S201). - Then, the
barcode detector 23 detects a barcode from the generated print data (in step S202). In the case where a barcode has been detected, the procedure proceeds to step S204. In the case where no barcodes have been detected, the processing is completed (in step S203). - In step S203, in the case where a barcode has been detected from the print data, the
determination unit 25 refers to the output characteristic information on theprinter 1 stored in thestorage unit 24 and determines whether or not theprinter 1 is capable of printing the barcode with a predetermined print quality or higher (in step S204). - In step S204, in the case where it is determined that the
printer 1 is capable of printing the barcode with the predetermined print quality or higher (YES in step S204), the processing is completed. - In step S204, in the case where it is determined that the
printer 1 is incapable of printing the barcode with the predetermined print quality or higher (NO in step S204), thealert unit 26 issues an alert in an alert method set in advance (in step S205). For example, thealert unit 26 makes theUI device 15 display an alert screen and alerts the user that a printed result may include a barcode whose print quality is lower than the predetermined print quality. - In the case where the alert method set in advance includes a method in which an alert is output on a sheet, the alert
information adding unit 27 adds alert information to the print data (in step S206). - Specifically, for example, in the case where a print job includes a command for imposition printing, since a condition “perpendicular” is set in the “barcode orientation” column in the determination table, when print data resulting from rotation performed in accordance with the command for imposition printing includes a barcode whose orientation is perpendicular to the sheet transportation direction, the
alert unit 26 commands the alertinformation adding unit 27 to change the print color of the barcode to red. Moreover, for example, thealert unit 26 commands the alertinformation adding unit 27 to add some kind of mark or identification information to the barcode. - Furthermore, in the case where the
alert unit 26 issues an alert, the alertinformation adding unit 27 may add an alert message indicating that a barcode may be incorrectly read, as alert information, to the image data. - Next, specific examples of the alert method according to the exemplary embodiment will be described with reference to
FIGS. 10 to 12 . -
FIG. 10 is a diagram illustrating an example of the case where a user is alerted by an alert screen indicating that a barcode that may be printed with a print quality lower than the predetermined print quality may be included in a printed result. -
FIG. 11 is a diagram illustrating an exemplary alert in the case where one page includes two barcodes 51 and 52 and the orientation of the barcode 52 meets a condition set in the determination table. As illustrated inFIG. 10 , thedetermination unit 25 has determined that the orientation of the barcode 51 does not meet a condition “perpendicular” set in the “barcode orientation” column in the determination table. Thus, theoutput unit 28 outputs the barcode 51 in black. In contrast, thedetermination unit 25 has determined that the orientation of the barcode 52 meets the condition “perpendicular” set in the “barcode orientation” column in the determination table. Thus, thealert unit 26 commands the alertinformation adding unit 27 to add, to image data, a command for changing the print color of the barcode 52 from black to red as alert information. Furthermore, the alertinformation adding unit 27 adds an alert message such as “when the red barcode is read, it may be incorrectly read.” to the image data. -
FIG. 12 is a diagram illustrating an example of the case where a box is drawn around a barcode that may be printed with a print quality lower than a predetermined print quality. As illustrated inFIG. 12 , in the case where thedetermination unit 25 has determined that it is not possible to print a barcode whose data is included in print data with a predetermined print quality or higher, thealert unit 26 commands the alertinformation adding unit 27 to add abox 53, as alert information, around the barcode whose data is included in the print data. Furthermore, the alertinformation adding unit 27 adds an alert message such as “when the barcode in the box is read, it may be incorrectly read.” to the image data. - Moreover, the presence or absence of a barcode is detected by scanning and reading generated print data in the exemplary embodiment described above. However, the invention is not limited such an exemplary embodiment. For example, the
barcode detector 23 may detect the presence or absence of a barcode by analyzing a visualization instruction included in a print job. Furthermore, when the printdata generation unit 22 performs RIP processing in accordance with a print job, the printdata generation unit 22 may generate intermediate data, and thebarcode detector 23 may detect the presence or absence of a barcode by analyzing this intermediate data. - In addition, the
determination unit 25 determines whether or not theprinter 1 is capable of printing a barcode with a predetermined print quality or higher by referring to output characteristic information on theprinter 1 stored in thestorage unit 24 in the exemplary embodiment described above, theprinter 1 being a printer specified for output. However, a level at which an alert is issued may be set in accordance with the type of barcode, the line width of barcode, or the like. For example, when the lines of a barcode are thick, an alert is not issued under any conditions. Alternatively, determination as to whether an alert should be issued may be more strictly performed in the case where the lines of a barcode are thin. - Moreover, alert processing is performed in the
proofing printer 2 in the exemplary embodiment described above. However, similar alert processing may be performed when image processing in which a print job is generated is performed in theterminal apparatus 3. In this case, the output characteristic information on theprinter 1 should be stored in theterminal apparatus 3. Moreover, in this case, when theterminal apparatus 3 transmits a print job to the proofingprinter 2, theterminal apparatus 3 determines whether or not it is possible to print a barcode whose data is included in a print job with a predetermined print quality or higher by referring to the output characteristic information in theterminal apparatus 3. In the case where theterminal apparatus 3 determines that it is impossible to print the barcode with a predetermined print quality or higher, it is desirable that an alert screen be displayed on the display screen of theterminal apparatus 3 or alert information be added to the print job. - The foregoing description of the exemplary embodiment of the present invention has been provided for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations will be apparent to practitioners skilled in the art. The embodiment was chosen and described in order to best explain the principles of the invention and its practical applications, thereby enabling others skilled in the art to understand the invention for various embodiments and with the various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the following claims and their equivalents.
Claims (13)
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JP2013051837A JP6024535B2 (en) | 2013-03-14 | 2013-03-14 | Image forming apparatus and program |
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CN110884258A (en) * | 2018-09-11 | 2020-03-17 | 海德堡印刷机械股份公司 | Meta-information encoding for inkjet printing processes |
CN112829478A (en) * | 2021-01-19 | 2021-05-25 | 厦门喵宝科技有限公司 | Method for printing management of Bluetooth printer |
US11110723B2 (en) * | 2015-04-16 | 2021-09-07 | Hewlett-Packard Development Company, L.P. | Print apparatus having first and second printing devices, computer readable medium and computer implemented method |
US12011941B2 (en) | 2021-08-04 | 2024-06-18 | Hewlett-Packard Development Company, L.P. | Print apparatus having first and second printing devices, computer readable medium and computer implemented method |
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JP2016080866A (en) * | 2014-10-16 | 2016-05-16 | 富士ゼロックス株式会社 | Maintenance necessity estimation device and program |
JP7040051B2 (en) * | 2018-01-26 | 2022-03-23 | セイコーエプソン株式会社 | Electronics |
BE1026293B1 (en) * | 2018-05-22 | 2019-12-19 | Phoenix Contact Gmbh & Co | Marking system for marking a marking object |
JP7304420B2 (en) * | 2019-09-02 | 2023-07-06 | 富士通フロンテック株式会社 | PRINT SYSTEM, PRINT CONTROL METHOD, INFORMATION PROCESSING APPARATUS, AND PRINT CONTROL PROGRAM |
JP7322645B2 (en) * | 2019-09-30 | 2023-08-08 | ブラザー工業株式会社 | Inkjet printing device and program |
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JP2014178834A (en) | 2014-09-25 |
CN104044353A (en) | 2014-09-17 |
JP6024535B2 (en) | 2016-11-16 |
US8851593B1 (en) | 2014-10-07 |
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