JP4058315B2 - Information processing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image forming apparatus capable of recording on one side of a recording sheet and recording on the other side of the recording sheet.
[0002]
[Prior art]
<Double-sided printing, bleeding>
In an image forming apparatus used as an image recording apparatus such as a printer, a copying machine, a facsimile machine, or a plotter, when printing is performed on both sides of a recording sheet, the recording data on the back side is seen through deeply (hereinafter referred to as “show-through”). ")" Was a problem. A specific example is shown in FIG. The upper part is a diagram in which one side of the recording data is output and a diagram in which the recording data on the other side is output. When both the recording data are recorded on both sides of the same recording sheet, a portion having a high image density may appear dark. This phenomenon is shown in the lower part.
[0003]
Therefore, as a technique that does not cause the “show-through”, for example, Patent Document 1 proposes a technique for reducing the print density and reducing the show-through as much as possible. However, in this technique, the image density on one side of the recording paper is uniformly reduced. Therefore, when recording data having a high contrast is output, the image density of the recording data becomes small and the image density becomes extremely low. Small printed parts may occur. Therefore, Patent Document 2 attempts to solve the above problem by controlling the print density for each object of the image data.
[0004]
<Adverse effects of show-through measures>
The outline of the technique of Patent Document 2 is as follows. That is, the image processing unit acquires color information together with position information of the recording data, detects recording data that overlaps on both sides of the recording paper from the position information of the recording data, and compares the color information for each detected recording data. Then, image processing is performed based on the comparison result. The comparison of the color information described here is a determination that the recording data conversion process is performed when the difference in color tone is large, and that the conversion process is not performed when the color tone is close.
[0005]
However, if the color tone on both sides is close and the image density is high, show-through may occur. For example, a monochrome cyan image having a uniform tone is printed on one side and a monochrome cyan character is printed on the other side. In this case, the cyan characters printed on the other side are very difficult to see, and the readability of the characters is reduced. That is, the techniques in Patent Document 1 and Patent Document 2 have not sufficiently solved the problem of show-through.
[0006]
<Problems other than show-through>
On the other hand, the items that are important when the user prints the recording data naturally depend on the recording data to be printed. The recording data is composed of objects such as a character image portion and a graphics portion, but there are also various objects that the user wants to emphasize with priority. However, in Patent Document 1 and Patent Document 2, since the image forming apparatus performs uniform processing without requesting the user's intention, depending on the recording data to be printed, processing that does not match the user's preference may be provided. Sex cannot be denied.
[0007]
[Patent Document 1]
Japanese Patent Laid-Open No. 5-3024
[Patent Document 2]
JP 2000-43242 A
[0008]
[Problems to be solved by the invention]
In view of the above, the present invention has been devised to solve both the “through show”, which is a problem peculiar to the image forming apparatus during double-sided printing, and the user's preference.
The outline of the present invention is that “record data that is predicted to show a large amount of show-through is subjected to correction processing in advance, and then the corrected recording data is output to recording paper” and “the presence / absence of the correction processing and the application range are determined by the user. Are two points.
[0009]
Accordingly, a first object of the present invention is to provide an image forming apparatus that is not affected by show-through during double-sided printing, and a second object is to provide an information processing apparatus that performs corrections that suit user preferences. That is.
[0010]
[Means for Solving the Problems]
  In order to solve the above problem, the invention described in claim 1MediumAnd recording on one side of theMediumIn the information processing apparatus capable of recording also on the other side of the image, prediction means for predicting color information that appears on the other side from the output value for one side, and the output value for the other side to the other side A calculation unit that calculates color information to be recorded; and a correction unit that corrects an output value of the other surface in accordance with a difference between the result of the prediction unit and the color information recorded on the other surface. .
[0011]
According to a second aspect of the present invention, in the information processing apparatus according to the first aspect, the color information uses lightness or chromaticity information.
[0012]
According to a third aspect of the present invention, in the information processing apparatus according to the first or second aspect, the correction means enlarges the brightness difference or the chromaticity difference.
[0013]
According to a fourth aspect of the present invention, in the information processing apparatus according to any one of the first to third aspects, the correction unit includes a determination unit that determines the type using identification information of an object to be corrected, And selecting means for selecting an object to be corrected based on the determination result, and correcting the selected object.
[0014]
  The invention according to claim 5 is a record.MediumAnd recording on one side of theMediumIn the information processing apparatus capable of recording also on the other surface of the first surface, the prediction means for predicting the color information show-through on the other surface from the output value on one surface and the output value on the other surface from one surface And a correction unit that corrects output values on one side, the other side, or both sides according to the result of the prediction unit.
[0015]
According to a sixth aspect of the present invention, there is provided an information processing apparatus for controlling display of one side and the other side of recording data, and predicting means for predicting color information show-through on the other side from an output value for one side. And predicting means for predicting color information that shows-through on one surface from output values for the other surface, display means for previewing color information of show-through according to the prediction result, and changing the preview display And a threshold value changing means for changing the show-through threshold value of the recording data to be corrected according to the result of the change.
[0016]
The invention according to claim 7 is the information processing apparatus according to claim 6, wherein the color information uses lightness or chromaticity.
[0017]
According to an eighth aspect of the present invention, in the information processing apparatus according to the sixth or seventh aspect, the display changing unit and the threshold value changing unit include options according to manual setting and automatic setting.
[0018]
  According to a ninth aspect of the present invention, in the information processing apparatus according to any one of the sixth to eighth aspects, the manual setting option includes: show-through color information.From outsideIt has a control means for operating or controlling.
[0019]
According to a tenth aspect of the present invention, in the information processing apparatus according to any one of the sixth to eighth aspects, the automatic setting options are at least character priority, image priority, ink amount priority, and options according to standard settings. It is characterized by becoming.
[0020]
The invention described in claim 11 is the information processing apparatus according to any one of claims 6 to 8, wherein the character-priority option is correction means for expanding a brightness difference.
[0021]
According to a twelfth aspect of the present invention, in the information processing apparatus according to any one of the sixth to eighth aspects, the image priority option is correction means for expanding a chromaticity difference.
[0022]
According to a thirteenth aspect of the present invention, in the information processing apparatus according to any one of the sixth to eighth aspects, the ink amount priority option is that the amount of ink consumed for printing is applied to a double-sided image object. It has an extraction means for extracting the most image objects and a color conversion means for color-converting the image objects in order to reduce ink consumption used for printing the image objects extracted by the extraction means. To do.
[0023]
According to a fourteenth aspect of the present invention, in the information processing apparatus according to any one of the sixth to eighth aspects, the standard setting option determines an object to be prioritized at the time of output from a ratio of objects constituting the image. It is characterized by doing.
[0024]
  According to a fifteenth aspect of the present invention, in the information processing apparatus according to any one of the first aspect, the fifth aspect, and the sixth aspect, the prediction unit is a recording unit.MediumIt has a change means which changes a predicted value according to the kind of.
[0025]
That is, according to the present invention, in an image forming apparatus capable of recording on one side of a recording sheet and recording on the other side of the recording sheet, a color that shows-through on the other side from an output value for one side. Information is predicted, color information to be recorded on the other surface is calculated from the output value for the other surface, and the output value of the other surface is determined according to the difference between the result of the prediction means and the color information to be recorded on the other surface. Correct.
[0026]
In addition, in an image forming apparatus capable of forming images on both sides of a recording sheet, prediction is made by predicting color information appearing on the other side from an output value on one side, and output on the other side. Based on the value, it predicts the color information that appears on one side, and corrects the output value of one side, the other side, or both sides according to the result of the prediction means.
[0027]
In addition, in an information processing apparatus that controls display of one side and the other side of recorded data, color information that appears on the other side is predicted from an output value for one side, and an output value for the other side is used. , Predicting color information to show through on one side, displaying to display preview color information according to the prediction result, changing the preview display, and correcting according to the change result Change the data show-through threshold.
[0028]
The color information prediction is changed according to the type of recording paper.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
<Example 1>
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the first embodiment of the present invention, the other side (hereinafter, unless otherwise specified) for each plate output value (RGB output value, etc.) of one side (hereinafter referred to as A side unless otherwise specified) in advance. Brightness information on the B-side) is stored in the show-through prediction table, and the information on the table is used to predict the color information of the show-through on the B-side when the A-side is output, The output brightness of the B side is calculated. A difference with the lightness overlapping on the B surface is calculated from the two pieces of information, and correction is performed according to the difference.
[0030]
2 and 3 are views showing an example of an image forming apparatus according to the present invention. The apparatus includes an image input unit 10, a color conversion unit 20, and an image output unit 60. Here, when outputting the recording data on one side of the recording paper, the recording data is processed through the above three steps and the recording data is output. When image data (RGB image data) transmitted from a host computer or the like is received, the color conversion processing unit 20 performs color correction on the received image data (RGB image data), and the image output unit 60 can receive the image data. A color signal (for example, CMYK) is converted and an image is output.
[0031]
On the other hand, when outputting the recording data on both sides of the recording paper, the image input unit 10, the color conversion unit 20, the image information acquisition unit 30, the image information calculation unit 40, the correction processing unit 50, and the image output unit. 60. An image output processing method will be described with reference to FIGS.
[0032]
Here, symbols used to describe the present invention will be described. L at the beginning of L * (A, B) used in FIG. 2 indicates lightness. The first character in () represents the surface to be output, and the following character represents the reading surface. That is, the above-mentioned L * (A, B) indicates the brightness value obtained by reading the recording data output on the A side on the B side. The process of outputting the recording data to one side (A side) of the recording paper is the same as the case of outputting the recording data to one side of the recording paper. Subsequently, when outputting the recording data to the other side (B side) of the recording sheet, the correction processing unit 50 of the image processing apparatus shown in FIG. Is output.
[0033]
Image information is input to the correction processing unit 50 from the image information calculation unit 40 of FIG. In this embodiment, brightness information is used as the image information. Whether the difference extraction unit 501 extracts a difference between one side (A surface) and the other side (B side) of the recording data, and then whether the identification unit 502 performs processing on the extracted information. Finally, the calculation unit 503 performs correction processing based on the determination result. In FIG. 4, color conversion means 20 that converts the calculation result obtained by the calculation means 503 into data that can be output by the output portion, image output means 60, and determination means that specifies or determines a criterion for the extracted information. 70 was also described.
[0034]
Here, processing for transferring recording data edited and created by a host computer or the like to the recording apparatus side in duplex recording according to this example will be described with reference to the flowchart of FIG. This processing is performed according to the instruction whether the recording data to be printed is double-sided recording or single-sided recording. In the case of single-sided recording, the recording data is received from the host computer (step 1 / NO), and the recording data is corrected. First, print data on one side is output to obtain a print image.
[0035]
If the recording data to be printed is double-sided recording, the recording data is received (step 1 / YES), and then output of one side (A side) of the recording data included in the recording information is started (step 2). Simultaneously with outputting the recording data of the A side, the image information of the A side is acquired (step 3), this image information is analyzed, and the show-through color information on the other side (B side) of the recording data is calculated (step 4). ).
[0036]
On the other hand, simultaneously with outputting the recording data of the A side, image information of the other side (B side) of the recording data to be printed is acquired (step 5). The prediction information of the show-through color information and the image information on the other surface are temporarily stored (step 6). If the show-through color information exceeds a predetermined threshold with respect to the temporarily stored recording data, correction is performed to reduce the show-through color information (step 7), otherwise no correction is performed. . Subsequently, the obtained recording data is converted into data that can be output by the image output unit (step 8). Finally, the recording data on the B side after conversion is output (step 9), and the recording data in which the recording data is printed on both the A and B sides can be obtained.
[0037]
Details of Step 4 and Step 7 will be described later in <Image Information Calculation> and <Correction Processing>.
[0038]
<Image information calculation (calculation of show-through color information)>
When calculating the show-through of the image by the processing method shown in FIG. 3, the following procedure is followed. That is, the recording data (RGB image data) transmitted from the image output unit 10 is analyzed and converted into a different color space. As a color space to be applied at this time, a known color space is applied, but in this embodiment, an L * a * b * space is applied. This image information is acquired for each object, and for example, a management table shown in FIG. 6 is created. a * () and b * () are functions that return saturation and hue. As the color information of each object at this time, the average brightness or the most frequently appearing brightness can be used. In this embodiment, the average brightness is used. The show-through color information is predicted using the obtained brightness information and the show-through color information prediction table of the image. FIG. 7 shows an example of the prediction table. L * (A, A) represents the brightness observed on the A plane when image data having a certain brightness is output for the A plane, and at the same time L on the B plane. * Indicates that an image is output at the brightness given by (A, B). The prediction table used at this time may be created in advance, stored in a recording medium such as a memory, and used as appropriate. The recording data on the A side is periodically updated by measuring the color on the B side as needed. It is also possible to do. An example of creating a prediction table is described in <Prediction table creation method> described later. Subsequently, a correction method using a prediction table will be described.
[0039]
<Image processing calculation (correction method)>
Since the degree of show-through on the B side of the recording data recorded on the A side is calculated using the prediction table, this is subsequently corrected. In the present embodiment, an example of correcting the recording data on the B side is shown. In other words, the correction of the recording data on the B side is performed after obtaining the image information on the B side, and then the show-through degree L * (A, B) of the image and the brightness information on the B side of the B side recording data (hereinafter, L * (Denoted as (B, B)) is calculated, and if this difference is greater than a predetermined threshold, correction is performed. The threshold value at this time may be set to a fixed value, or is preferably specified by the user. Repeat the correction process for all objects.
[0040]
The correction process will be described in detail. FIG. 10 shows the A side image and the B side image before correction. The recording data of the A side has a character image recorded on the entire surface. On the other side, the graphic image object 1 (Obj.1) having a high image density, the graphic image object 2 (Obj.2) having a low image density, and the character image object 3 (Obj.2) having the lowest image density are displayed on the other side B. .3) is arranged. The average brightness of each object is as shown in the L * (B, B) column of FIG. The difference in average brightness between the recorded data on the A side and B side is shown in the ΔL * column of FIG. Since the average lightness difference is fixed at 15 in this embodiment, correction processing is performed on all objects, and is performed according to the difference of the processed lightness difference. That is, the object 2 with the smallest brightness difference is strongly corrected, and conversely, the objects 1 and 3 with the large brightness difference are subjected to weak correction. A double-sided image on the recording paper obtained after correction is shown in FIG. Since the show-through of the object 1 on the B side is suppressed compared to the image before correction, the readability of the characters on the A side is improved. The correction result according to this example is shown in a graph (FIG. 9). In the figure, the horizontal axis shows the brightness value of the recorded data on the A side, and the vertical axis shows the brightness value of the recorded data on the B surface. In the figure, ○ indicates the recorded data before correction, and □ indicates the recorded data after correction. It is data. The lightness difference is increased by the correction process, the contrast of both sides of the image is improved, and the readability of the characters on the A side is improved. Here, the measurement value of FIG. 7 was used as the prediction formula for the degree of show-through of the image. The prediction formula at this time is shown by the following formula (where A0 to A3 and b1 to b3 are constants). In the embodiment, the prediction formula is constructed by a cubic equation, but it can be approximated by using a quadratic linear function, a nonlinear function, or the like. It is also preferable to increase the number of plots in order to improve prediction accuracy.
[0041]
L * (A, B) = A₀+ A₁{L * (A, A) -b₁} + A₂{L * (A, A) -b₂}²+ A_Three{L * (A, A) -b_Three}^Three
[0042]
<Prediction table creation method>
Hereinafter, a method for creating a show-through color information prediction table in the image information calculation unit will be described. An example of creating the show-through color information table used in the correction processing unit 40 of the present invention will be described with reference to the flowchart of FIG. A plurality of sets of reference color image recording signals RGB as a reference are set (step 10), and a color patch is output from these reference color image recording signals RGB by a printer (step 20). The color characteristics of these color patches are measured with a colorimeter on the A and B planes (step 30), and L * a * b * values (step 40) of each patch used as sample data are obtained.
[0043]
Next, a prediction formula for the B surface with respect to the A surface is created from the L * a * b * value of the A surface color patch and the L * a * b * value of the color patch for the B surface (step 50). Using the obtained prediction formula, a table of output L * a * b * values for input L * a * b * values is created and used as a show-through color information table (step 60). Measurement example
It shows in FIG.
[0044]
<Example 2, threshold setting example>
In the second embodiment of the present invention, the threshold value of the show-through degree is determined using the user interface. Therefore, double-sided printing adapted to the user's preference is possible. The details are described below. An example of a user interface realized by the present invention is shown in FIGS. 13 and 14, and its flowchart is shown in FIG. FIG. 15 is a flowchart corresponding to the user interface of FIGS. In this embodiment, the user interface is displayed according to a request from the user or an application. The user first selects a priority plane of the image (step 100). That is, the user selects a priority image with the option 702 in FIG. If the priority plane is not selected at this time, the standard setting mode is specified by default, and the priority object is automatically selected. This embodiment will be described in Example 4.
[0045]
On the other hand, when the priority surface is designated by the user in step 100 as “odd surface” (A surface in this embodiment) or “even surface” (B surface in this embodiment) (step 100). / YES), the user selects an object to be further prioritized in the priority plane. At this time, the user selects an object to be emphasized as double-sided printing while observing the print preview screen in FIG. 13 (step 105, step 106, and step 107). When the button 701 is selected at this time, the preview screen 703 is displayed again, so that it is possible to visually grasp which part is emphasized.
[0046]
Based on the user's selection, a show-through threshold value corresponding to each mode is acquired (step 108). The initial value of the threshold value can be obtained from manufacturer-compliant ink, recording paper, or the like, and is preferably used as a set value. When the user confirms the double-sided printed image in the preview, if the show-through is not acceptable, the threshold can be freely set by moving the slide bar as indicated by reference numeral 704 in FIG. As the threshold value obtained at this time, a value obtained by adding the threshold value specified by the user to the initial value is used again. By including this configuration, it is possible to create an image that is preferred by the user. In this embodiment, the case where the chromaticity difference in the double-sided image is 10 is set as the threshold value, and the user desires to emphasize the A side. According to this option, the conditions for correction processing are set by the setting shown in FIG. The threshold value set here is linked with the threshold value in the determination means 70 of FIG.
[0047]
In the present embodiment, considering the case where the user designates a setting that places importance on the A-side character image, as shown in FIGS. 16 and 17, the color tone of the image is changed to improve the readability of the character. Processing to reduce the reflection is performed. FIG. 18 shows A-side character image recording data on the a * -b * plane (that is, A-side object 1) and B-side graphics image recording data (that is, B-side object 2). It is the figure which plotted the color tone of the show-through predicted value in. Before the correction, it was difficult to see the character because the center of the color tone of the show-through degree on the B side was close to the color tone of the character object on the A side. However, the corrected printed image is subjected to a process for emphasizing the character color for the A-side character image (converting the character color in the complementary color direction), and the saturation for the B-side image. It is improving. Therefore, the clarity of the graphics image is increased and the image quality is improved on both sides while improving the readability of the characters.
[0048]
<Example 3>
In the third embodiment of the present invention, an ink amount priority mode is provided by a user interface, and processing for reducing ink consumption is selected. As a result, the image quality is improved, the cost performance is excellent, and the environment is excellent. The details are described below.
[0049]
<Ink consumption>
Next, a flowchart when the ink amount priority mode is selected in the image mode of the user interface of FIG. 13 will be described with reference to FIG. The flowchart of this embodiment is greatly different from the first and second embodiments. That is, reducing the ink consumption on both sides is more effective than reducing the ink amount on only one side. Since double-sided recording is used in this embodiment, whether or not double-sided printing is performed in the flowchart differs from the first and second embodiments.
[0050]
The recording data to be printed is received from the host computer, and the recording information on the recording data A side is analyzed (step 202). At the same time, the image information on the B surface is analyzed (step 200), and the image information of the recording data is calculated (step). 203, and step 201). The color information of the image is calculated from the analysis information in the same manner as in the previous embodiment, and this is temporarily stored in the storage medium (step 204). Here, based on the correspondence information between the lightness component and the ink consumption, the objects are sorted in the order of the ink consumption (step 205), the objects satisfying a certain predetermined condition are extracted (step 206), and the extracted objects are extracted. Then, correction processing is performed (step 207). This is applied to all objects on both sides (step 207). Subsequently, the obtained recording data is converted into data that can be output by the image output unit (step 208), and an image is output (step 209). The output order at this time may be either the A side or the B side first. Preferably, it is better to output a surface having a short time required for image output (step 210). Here, the correction process (step 207) will be described.
[0051]
FIG. 20 shows an image processing apparatus. FIG. 21 shows the ink consumption for L (A, A). The processing up to the image information calculation unit 30 in FIG. 20 is the same as that in the first embodiment. Subsequently, the estimated ink consumption of each object is calculated. If the ink reduction amount is not sufficient as compared with the ink reduction setting value, a part of the page object is designated according to the designated priority in order to reduce the ink amount by the correction processing unit 50. Conversion is performed to lower the brightness of the object (that is, to increase the brightness of the image). Then, the total ink reduction amount is calculated again. In this embodiment, the process of increasing the brightness is performed, but other methods can also be used.
[0052]
The obtained calculation result is compared with the ink reduction set value as described above. If the reduction amount of the printing paint is not yet sufficient, the correction process, the calculation of the ink reduction amount, and the comparison with the set value are repeated. Thereafter, when a predetermined ink reduction amount is reached, it is transmitted to the color conversion unit 20 and converted into data that can be output by the image output unit. The converted recording data is output from the image output unit 60 and the series of operations is completed. To do.
[0053]
Next, an ink consumption reduction procedure will be described. As shown in FIG. 19, since all the objects drawn on both sides of the page are sorted in the order of ink consumption, how much ink is consumed for all the objects in the currently generated page. These are accumulated and compared with the ink consumption limit amount set for the user or the system (for example, set to 50% of the entire page in page units, or the ink amount is set directly) so that it is within the limit. Next, the objects whose brightness is lowered are created in order from the object with the largest ink consumption. At this time, it is preferable to perform the processing so that the brightness difference between the two surfaces is improved. That is, the correction process is continued so that the contrast on both sides of the image is improved and the ink consumption is within a predetermined value. If it is within the predetermined value, the correction of the object is immediately terminated.
[0054]
In this embodiment, a method for calculating the amount of ink used corresponding to the brightness of the image has been described. However, a table that can use the amount of ink corresponding to each RGB combination is stored in a recording medium in advance and used as appropriate. In addition, it is also possible to define a function for predicting the amount of ink used and reduce the amount of ink used by using it.
[0055]
<Example 4>
The fourth embodiment of the present invention relates to the standard setting of the print mode at the time of double-sided printing, and automatically sets an object to be prioritized at the time of output from the information and size of the object constituting the image. As a result, the user is freed from the troublesomeness of setting image printing conditions, and usability is improved.
[0056]
<Object selection method>
Here, correction processing when the standard setting mode is selected in the image mode of the user interface of FIGS. 13 and 14 will be described. In the present embodiment, only the processing for automatically setting the priority mode is different from that in the first embodiment, and therefore there is no priority surface in the flowchart of FIG. 15 (that is, steps 101 to 104 and step 108 of FIG. 15). ) In detail.
[0057]
In this embodiment, the object information is analyzed, the size of each object is calculated (step 101), and this step is repeated until there are no more objects (step 102). The obtained information is sorted in order of object size (step 103), and the mode to which the object having the maximum size belongs is set as the priority mode (step 104). For example, in FIGS. 10 and 11, since the object having the largest size on the A and B planes is the A-side character image, the priority plane is the A plane and the priority mode is designated as character priority. Become. Since the execution result of the present embodiment is the same as that of the first embodiment, the effect is clear.
[0058]
The present invention relates to an image forming apparatus and an image processing apparatus, and in the embodiments, an example in which the present invention is applied to an ink jet recording apparatus has been described, but application to other image recording apparatuses is also possible. That is, in the ink amount reduction mode, when toner is used as a recording material, it can be replaced with toner and used as a toner amount reduction mode.
[0059]
It is also preferable to change the show-through prediction means according to the type of recording paper. That is, it is possible to create a management table corresponding to the recording paper in the show-through color information. For example, FIG. 13 of the second embodiment holds items for setting the recording paper (plain paper, glossy paper, dedicated paper, etc.), and the average brightness of the recording paper is calculated from the selection result, and this brightness difference is calculated. It is possible to reflect the threshold value in FIG. 14 or to hold the table in FIG. 7 of the first embodiment for each recording sheet.
[0060]
【The invention's effect】
As described above, according to the present invention, the color information of the show-through on the other side is obtained from the output value on one side of the printing, and the output value is corrected to be recorded on the other side according to the degree of the show-through. did. According to the present invention, it is possible to provide an image forming apparatus that is not affected by show-through during double-sided printing.
In addition, the correction can be set directly on the user interface by the user himself / herself. According to the present invention, it is possible to provide an image processing apparatus and an image processing apparatus that perform double-sided printing processing that meets the conditions required by the user.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of “show-through” solved by the present invention.
FIG. 2 is a block diagram illustrating a basic configuration of the image forming apparatus.
FIG. 3 is a block diagram illustrating an example of an image forming apparatus according to the first exemplary embodiment of the present invention.
FIG. 4 is a block diagram illustrating an example of image processing according to the first embodiment of the present invention.
FIG. 5 is a flowchart showing an example of image processing according to the first embodiment of the present invention.
FIG. 6 is a diagram illustrating an example of a management table according to the first embodiment of the present invention.
FIG. 7 is a diagram illustrating an example of a show-through prediction table according to the first embodiment of the present invention.
FIG. 8 is a diagram showing an example of a management table according to the first embodiment of the present invention.
FIG. 9 is a graph of a correction example in Embodiment 1 according to the present invention.
FIG. 10 is a diagram illustrating a state of an image before correction.
FIG. 11 is a diagram illustrating an example of the effect of the first embodiment according to the present invention.
FIG. 12 is a diagram showing an example of a show-through degree prediction table creation flowchart according to the present invention.
FIG. 13 is a diagram showing an example of a user interface in Embodiment 2 according to the present invention.
FIG. 14 is a diagram illustrating a setting example of a correction process threshold value according to the second embodiment of the present invention.
FIG. 15 is a diagram illustrating an example of a process flowchart of a user interface according to the second embodiment of the present invention.
FIG. 16 is a diagram illustrating a state of an image before correction.
FIG. 17 is a diagram illustrating an example of the effect of the second embodiment according to the present invention.
FIG. 18 is a graph of a correction example in Embodiment 2 according to the present invention.
FIG. 19 is a diagram illustrating an example of a flowchart of image processing according to the third embodiment of the present invention.
FIG. 20 is a block diagram illustrating an example of an image processing apparatus according to a third embodiment of the present invention.
FIG. 21 is a diagram illustrating an example of an ink consumption amount prediction table according to the third embodiment of the present invention.
[Explanation of symbols]
10 Image input section
20 color converter
30 Image information acquisition unit
40 Image information calculation unit
50 Correction processing section
60 Image output unit
70 Determining Means for Determining Criteria for Extracted Information

Claims (15)

In other information processing apparatus capable of recording even to a surface of the recording medium performs recording on one side of the recording medium,
A predicting means for predicting color information show-through on the other surface from an output value for one surface;
A calculation means for calculating color information to be recorded on the other surface from an output value for the other surface;
An information processing apparatus comprising: a correction unit that corrects an output value of the other surface in accordance with a difference between the result of the prediction unit and color information recorded on the other surface. The information processing apparatus according to claim 1, wherein the color information uses lightness or chromaticity information. The information processing apparatus according to claim 1, wherein the correction unit enlarges the brightness difference or the chromaticity difference. The correction means includes a determination means for determining the type using identification information of an object to be corrected, and a selection means for selecting an object to be corrected based on the determination result, and for the selected object The information processing apparatus according to claim 1, wherein correction is performed. In other information processing apparatus capable of recording even to a surface of the recording medium performs recording on one side of the recording medium,
A predicting means for predicting color information show-through on the other surface from an output value for one surface;
A predicting means for predicting color information show-through on one surface from an output value on the other surface;
An information processing apparatus comprising: a correction unit that corrects an output value on one side, the other side, or both sides according to a result of the prediction unit. In an information processing apparatus that controls display of one side and the other side of recorded data,
A predicting means for predicting color information show-through on the other surface from an output value for one surface;
A predicting means for predicting color information show-through on one surface from an output value on the other surface;
Display means for previewing color information of show-through according to the prediction result;
Display changing means for changing the preview display;
An information processing apparatus comprising: a threshold value changing unit that changes a threshold value of the show-through of recording data to be corrected according to the change result. The information processing apparatus according to claim 6, wherein brightness or chromaticity is used as the color information. The information processing apparatus according to claim 6 or 7, wherein the display change unit and the threshold value change unit include options according to manual setting and automatic setting. 9. The information processing apparatus according to claim 6, wherein the manual setting option includes control means for operating or controlling show-through color information from the outside . 10. 9. The information processing apparatus according to claim 6, wherein the automatic setting options include at least character priority, image priority, ink amount priority, and standard settings. The information processing apparatus according to claim 6, wherein the character priority option is a correction unit that increases a brightness difference. The information processing apparatus according to claim 6, wherein the image priority option is a correction unit that enlarges a chromaticity difference. The choice of ink amount priority is the extraction means for extracting the image object that consumes the largest amount of ink used for printing, and the ink consumption used for printing the image object extracted by the extraction means. 9. The information processing apparatus according to claim 6, further comprising color conversion means for performing color conversion on the image object in order to reduce the amount. The information processing apparatus according to any one of claims 6 to 8, wherein the standard setting option determines an object to be prioritized at the time of output from a ratio of objects constituting an image. 7. The information processing apparatus according to claim 1, wherein the prediction unit includes a change unit that changes a predicted value according to a type of a recording medium .

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