JP4103382B2 - Image forming apparatus, image forming method, image forming program, and storage medium therefor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image forming apparatus, an image forming method, an image forming program, and a storage medium for the image forming program.
[0002]
[Prior art]
In an image forming apparatus such as a printer, a copier, or a FAX, a print image is formed on a recording medium with an image quality such as a predetermined gradation or color.
[0003]
FIG. 3 shows a configuration diagram of a conventional image forming apparatus. The image forming apparatus shown in FIG. 3 is for color printing. The normal print image data 10 that the user intends to form an image is read into the image processing unit 12 using the image input unit. The normal print image data 10 is formed on the recording medium 16 using a gradation and color processing LUT (Look Up Table) 14.
[0004]
In the conventional image forming apparatus, in order to form the normal print image data 10 with a stable gradation or color image quality, the gradation and color processing LUT 14 is formed using the gradation and color processing LUT adjustment pattern image data 18. It is adjusted.
[0005]
[Problems to be solved by the invention]
Even if image formation is performed using the same gradation and color processing LUT 14, the impression of image quality given to the user depends on the image forming conditions such as the type of the recording medium 16, the type of toner, and the image density of the normal print image data 10. May vary greatly.
[0006]
However, in the conventional image forming apparatus, only the gradation and color processing LUT 14 is changed using the gradation and color processing LUT adjustment pattern image data 18 that is predetermined for each apparatus according to the characteristics of the apparatus. Therefore, the individual image quality adjustment according to the user's preference cannot be performed according to the image forming conditions and the normal print image data 10. Further, although the gradation and color processing LUT adjustment pattern image data 18 used for automatic image quality adjustment is suitable for changing the image quality of specific normal print image data 10, individual normal print image data 10 and image formation are used. In some cases, it is not always suitable for adjusting to a desired image quality under certain conditions.
[0007]
Further, when adjusting the image quality using the general normal print image data 10, it is often difficult to sufficiently confirm the influence of the image quality adjustment with the general normal print image data 10. It was difficult to obtain the desired image quality.
[0008]
[Means for Solving the Problems]
The image forming apparatus according to the present invention includes an image forming unit that forms a print image on a recording medium , a target value setting gradation and color processing LUT, an image quality adjusting unit that adjusts the gradation and color processing LUT, and the image formation. A target for setting a target image value by mechanically reading target setting pattern image data formed on a recording medium using the target value setting gradation and color processing LUT adjusted by the image quality adjustment unit. an image forming apparatus having a setting unit, wherein the image quality adjustment section, the image quality adjustment pattern image data formed on a recording medium by using the target value setting tone and color processing LUT in the image forming section the adjusted target value setting tone and color processing LUT, the gradation and color processing LUT and tone and color processing LU for the target value set in the image forming unit by checking the image quality By comparing the measured values obtained by reading the mechanical and the target image value gradation and color processing LUT adjustment pattern image data formed on the recording medium without using any of the, according to the comparison result adjust the gray scale and color processing LUT Te, the image forming unit is for forming a normal print image data on a recording medium by using the image quality adjustment section the tones and color processing LUT adjusted by is there.
[0009]
Alternatively, an image forming unit that forms a print image on a recording medium , a target value setting gradation and color processing LUT, an image quality adjustment unit that adjusts the gradation and color processing LUT, and a print image formed on the recording medium Pattern image data for target setting formed on a recording medium using the fixing patch sensor for detecting the image quality of the image and the target value setting gradation and color processing LUT adjusted by the image quality adjustment unit in the image forming unit the an image forming apparatus having a target setting unit for setting a target image value is detected by the fixing patch sensor, the image quality adjustment section, the target value setting tone and color processing in the image forming section adjust the target value setting tone and color processing LUT by checking the image quality of the image quality adjustment pattern image data formed on a recording medium using LUT, the image forming unit In this case, the tone and color processing LUT and the tone and color processing LUT adjustment pattern image data formed on the recording medium without using any of the target value setting gradation and color processing LUT are output by the fixing patch sensor. The detected measurement value is compared with the target image value, and the gradation and color processing LUT are adjusted according to the comparison result, and the image forming unit is configured to adjust the gradation and color adjusted by the image quality adjustment unit. and it forms a normal print image data on a recording medium by using a color processing LUT.
[0013]
Furthermore, the target setting pattern image data including the same image pattern and the gradation and color processing LUT adjustment pattern image data are used.
[0014]
Further, the fixing patch sensor detects image quality at the detection position of the gradation and color processing LUT adjustment pattern image data corresponding to the detection position of the target setting pattern image data.
[0015]
Further, the fixing patch sensor is a densitometer or a color meter.
[0016]
Further, at least one of the normal print image data, the type of the recording medium, the storage tray of the recording medium, the type of toner, or the user of the image forming apparatus, the target image value or the gradation and color processing LUT. It has a storage part which memorizes at least one of these.
[0017]
The image forming method of the present invention, an image quality adjustment pattern image forming step of forming a picture quality adjustment pattern image data on a recording medium by using the gradation and color processing LUT for goal value set, it is formed on the recording medium Adjustment value input step of confirming the image quality adjustment pattern image data and inputting the adjustment value, and target value setting gradation and color processing for adjusting the target value setting gradation and color processing LUT based on the adjustment value A target setting pattern image forming step for forming target setting pattern image data on a recording medium using the target value setting gradation and color processing LUT; and a target formed on the recording medium. a target image value setting step of setting a target image value setting pattern image data by reading the mechanical, none of the target value setting tone and color processing LUT and tone and color processing LUT A gradation and color processing LUT adjustment pattern image forming step for forming gradation and color processing LUT adjustment pattern image data on the recording medium, and a gradation and color processing LUT adjustment formed on the recording medium. A gradation and color processing LUT adjustment step of comparing the target image value with a measured value obtained by mechanically reading the pattern image data and adjusting the gradation and color processing LUT according to the comparison result ; , a normal print image forming step of normal print image data is formed on a recording medium using the tones and color processing LUT, it is made of.
[0018]
Or, the eyes and the image quality adjustment pattern image forming step of the image quality adjustment pattern image data is formed on a recording medium using a target value setting tone and color processing LUT, the image quality adjustment pattern image data formed on the recording medium An adjustment value input step of confirming and inputting an adjustment value; a target value setting gradation and color processing LUT adjustment step of adjusting the target value setting gradation and color processing LUT based on the adjustment value; A target setting pattern image forming step for forming target setting pattern image data on a recording medium using the target value setting gradation and color processing LUT, and a target setting pattern image data formed on the recording medium. A target setting pattern image detection step of detecting an image by a fixing patch sensor, and setting a target image value based on the detected image of the target setting pattern image data The standard image value setting step, the target value setting gradation and color processing LUT, and the gradation and color processing LUT adjustment pattern image data are formed on the recording medium without using any of the gradation and color processing LUT. Tone and color processing LUT adjustment pattern image forming process, and gradation and color processing LUT adjustment for detecting an image of gradation and color processing LUT adjustment pattern image data formed on the recording medium by the fixing patch sensor A pattern image detection step, the measured value obtained from the detected gradation and color processing LUT adjustment pattern image data and the target image value are compared, and the gradation and color are determined according to the comparison result. gradation and color processing LUT adjustment step of adjusting the processing LUT, usually printouts a normal print image data is formed on a recording medium using the tones and color processing LUT And forming step is made of.
[0022]
Furthermore, the target setting pattern image data including the same image pattern and the gradation and color processing LUT adjustment pattern image data are used.
[0023]
Further, the fixing patch sensor detects image quality at the detection position of the gradation and color processing LUT adjustment pattern image data corresponding to the detection position of the target setting pattern image data.
[0024]
Further, the fixing patch sensor is a densitometer or a color meter.
[0025]
Further, a target image value storage step of storing the target image value for at least one of the normal print image data, the recording medium type, the storage tray of the recording medium, the toner type, or the user of the image forming apparatus. Alternatively, at least one of a gradation and color processing LUT storage step for storing the gradation and color processing LUT is included.
[0026]
Image forming program of the present invention, an image quality adjustment pattern image forming step of forming a picture quality adjustment pattern image data on a recording medium by using the gradation and color processing LUT for goal value set, is formed on the recording medium Adjustment value input step of confirming the image quality adjustment pattern image data and inputting the adjustment value, and target value setting gradation and color processing for adjusting the target value setting gradation and color processing LUT based on the adjustment value A target setting pattern image forming step for forming target setting pattern image data on a recording medium using the target value setting gradation and color processing LUT; and a target formed on the recording medium. a target image value setting step of setting a target image value setting pattern image data by reading the mechanical, the target value setting tone and color processing LUT and tone and color processing LUT Neu Gradation and color processing LUT adjustment pattern image forming process for forming gradation and color processing LUT adjustment pattern image data on the recording medium without using them, and gradation and color processing formed on the recording medium A gradation and color processing LUT adjustment for comparing the measured value obtained by mechanically reading the pattern image data for LUT adjustment with the target image value and adjusting the gradation and color processing LUT according to the comparison result a step, is intended to include, a normal print image forming step of forming on a recording medium normally print image data using the tone and color processing LUT.
[0027]
Storage medium storing an image forming program of the present invention, an image quality adjustment pattern image forming step of forming a picture quality adjustment pattern image data on a recording medium by using the gradation and color processing LUT for goal value set, the recording An adjustment value input step for confirming image quality adjustment pattern image data formed on the medium and inputting an adjustment value; and for target value setting for adjusting the target value setting gradation and color processing LUT based on the adjustment value Gradation and color processing LUT adjustment step, target setting pattern image forming step for forming target setting pattern image data on a recording medium using the target value setting gradation and color processing LUT, and on the recording medium A target image value setting step for setting a target image value based on the target setting pattern image data formed in the above, the target value setting gradation and color processing LUT, and the gradation and color processing L The gradation and color processing LUT adjustment pattern image forming step for forming the gradation and color processing LUT adjustment pattern image data on the recording medium without using any of T, the gradation formed on the recording medium, and A gradation and color processing LUT adjustment step of comparing the measured value obtained from the pattern image data for color processing LUT adjustment with the target image value and adjusting the gradation and color processing LUT according to the comparison result ; it is intended to include, a normal print image forming step of forming on a recording medium normally print image data using the tone and color processing LUT.
[0028]
As described above, the above problems can be solved.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
(Embodiment 1)
FIG. 1 is a configuration diagram of the image forming apparatus according to the first embodiment of the present invention. FIG. 2 shows a flowchart of image quality adjustment processing in the present embodiment.
[0030]
In the present embodiment, the image quality adjustment pattern image data 20 suitable for adjusting the image quality of the normal print image data 10 that the user wants to form an image with a desired image quality is formed on the recording medium 16 and formed on the recording medium 16. The target value setting gradation and color processing LUT 22 are adjusted based on the image quality of the image quality adjustment pattern image data 20. Using the adjusted target value setting gradation and color processing LUT 22, target setting pattern image data 24 suitable for machine reading is formed on the recording medium 16, and the image is detected by the fixing patch sensor 26. A target image value 28 for gradation and gray balance is determined. When the image quality of the normal print image data 10 is adjusted when the image is formed, gradation and color processing LUT adjustment pattern image data 18 suitable for machine reading is formed on the recording medium 16, and the fixing patch sensor 26 is used. The image detected by the above is compared with the target image value 28, and the gradation and color processing LUT 14 is adjusted. The normal print image data is formed on the recording medium 16 with a desired image quality using the gradation and color processing LUT 14.
[0031]
Hereinafter, this embodiment will be described in detail with reference to the flowchart of FIG.
[0032]
In step A, it is determined whether to set a target value. When the target value is set, the process is moved to the process B. In the image quality adjustment pattern image data setting step in step B, the image setting unit 30 in FIG. 1 sets image quality adjustment pattern image data 20 suitable for image quality adjustment of the normal print image data 10. For example, when the normal print image data 10 is a photographic image such as a landscape, image quality adjustment pattern image data 20 that reflects a change in gradation more strongly than a change in color is set. At this time, the image quality adjustment pattern image data 20 may be stored in the image forming apparatus in advance, or an image quality adjustment pattern image suitable for image quality adjustment of the normal print image data 10 to be printed by the user of the image forming apparatus. Data 20 may be input to the image forming apparatus each time.
[0033]
In the image quality adjustment pattern image forming process of step C, the set image quality adjustment pattern image data 20 is read into the image processing unit 12. The image processing unit 12 forms image quality adjustment pattern image data 20 on the recording medium 16 using the target value setting gradation and the color processing LUT 22.
[0034]
In step D, the user checks the image quality of the image quality adjustment pattern image data 20 formed on the recording medium 16. At this time, if the desired image quality is obtained, the process proceeds to Step G, and if the desired image quality is not obtained, the process proceeds to Step E.
[0035]
In the adjustment condition setting step of step E, an adjustment value 40 for adjusting the target value setting gradation and the color processing LUT 22 is input.
[0036]
In the target value setting gradation and color processing LUT adjustment step of step F, the image quality adjustment unit 38 in FIG. 1 adjusts the target value setting gradation and color processing LUT 22 based on the adjustment value 40. Further, Step C to Step F are repeated until the image quality adjustment pattern image data 20 formed on the recording medium 16 has a desired image quality.
[0037]
In the target setting pattern image forming step of step G, target setting pattern image data 24 is formed on the recording medium 16 using the adjusted target value setting gradation and color processing LUT 22.
[0038]
In the target setting pattern image detection step of Step H, the gradation property and the gray balance are detected by the fixing patch sensor 26 from the target setting pattern image data 24 formed on the recording medium 16.
[0039]
The target image value setting step of step I, the target setting unit 32 of FIG. 1, gradation and gray balance of the target setting pattern image data 24 that has been detected in step H is set as the target image value 28.
[0040]
In the target image value storage step of step J, the set target image value 28 is stored in the storage unit 34.
[0041]
At this time, the target setting pattern image data 24 is preferably an image pattern that can be mechanically easily detected by the fixing patch sensor 26. In this way, by setting the image quality adjustment pattern image data 20 and the target setting pattern image data 24 to be different image patterns, the image quality is once adjusted with the image quality adjustment pattern image data 20 that allows the user to easily check the image quality, and mechanically. The target image value 28 can be set using the target value setting pattern image data 24 that is easily detected.
[0042]
Further, the storage unit 34 may store a target image value 28 having a desired image quality for each type of the recording medium 16 for each type of the recording medium 16. By having such a storage unit 34, the target image value 28 is stored in advance without setting the target image value 28 every time a new recording medium 16 for forming the normal print image data 10 is selected. The target image value 28 suitable for the recording medium 16 can be selected from the plurality of target image values 28 and the process can be shifted to the process K. Similarly, the image forming material such as the type of toner, the normal print image data, and the target image value 28 that realizes a desired image quality for each image forming condition such as a user of the image forming apparatus may be stored.
[0043]
Further, instead of storing the target image value 28 for each recording medium 16, the storage capacity of the storage unit 34 can be set small by storing the target image value 28 for each storage tray of the storage medium 16.
[0044]
Further, the fixing patch sensor 26 may include at least one of a densitometer or a color meter.
[0045]
The gradation and color processing LUT adjustment pattern image forming step in step K does not use any of the gradation and color processing LUT, the target value setting gradation and the color processing LUT, and does not use the gradation and color processing LUT adjustment pattern. Image data 18 is formed on the recording medium 16.
[0046]
In the gradation and color processing LUT adjustment pattern image detection step in step L, the fixing patch sensor 26 in FIG. 1 uses the gradation and color processing LUT adjustment pattern image data 18 formed on the recording medium 16 to generate gradation. And a gray balance measurement 36 is detected.
[0047]
In the gradation and color processing LUT adjustment step of step M, the image quality adjustment unit 38 in FIG. 1 compares the target image value 28 stored in the storage unit 34 with the measured value 36 and adjusts the gradation and color processing LUT 14. To do.
[0048]
At this time, like the target setting pattern image data 24, it is preferable that the tone and color processing LUT adjustment pattern image data 18 is an image pattern that can be mechanically easily detected by the fixing patch sensor 26.
[0049]
Further, the target setting pattern image data 24 and the gradation and color processing LUT adjustment pattern image data 18 may include the same image pattern that is mechanically easy to detect. When the image is detected by the fixing patch sensor 26, the detection is performed with the same image pattern portion, so that the dependency on the image pattern of the target image value 28 and the measured value 36 can be avoided.
[0050]
Further, the fixing patch sensor 26 preferably detects the gradation and color processing LUT adjustment pattern image data 18 at a position equivalent to the position on the recording medium where the target setting pattern image data 24 is detected. By doing so, there is an advantage that it is possible to avoid the influence of the image quality unevenness of the image pattern formation in the recording medium surface.
[0051]
In the gradation and color processing LUT storage step of Step N, the adjusted gradation and color processing LUT 14 is stored in the storage unit 34 of FIG.
[0052]
Further, the storage unit 34 may store, for each type of recording medium 16, a gradation and color processing LUT 14 with a desired image quality for the type of the recording medium 16. By having such a storage unit 34, every time a recording medium 16 that forms the normal print image data 10 is newly selected, the gradation and color processing LUT 14 is not adjusted from the beginning, and stored in the storage unit 34 in advance. The gradation and color processing LUT 14 suitable for the recording medium 16 can be selected from the plurality of gradation and color processing LUTs 14 and the process can be transferred to step O. Similarly, the gradation and color processing LUT 14 that realizes desired image quality may be stored for each image forming condition such as image forming material such as toner type, normal print image data, and a user of the image forming apparatus.
[0053]
Further, instead of storing the gradation and color processing LUT 14 for each recording medium 16, the storage capacity of the storage unit 34 can be set small by storing the gradation and color processing LUT 14 for each storage tray of the storage medium 16. it can.
[0054]
In the normal print image forming step O, the normal print image data 10 is formed on the recording medium 16 using the adjusted gradation and color processing LUT 14.
[0055]
Also, each step of the image forming method can be processed as a program using a computer. Furthermore, each step of the image forming method can be stored as a program in a computer-readable storage medium, and the program can be read from the storage medium into the computer and processed.
[0056]
By using the image forming apparatus, the image forming method, the image forming program, or the storage medium storing the image forming program according to the present embodiment, the user's desire for the image forming conditions such as the type of the recording medium 16 and the type of toner The normal print image data 10 can be formed based on the image quality.
[0057]
(Embodiment 2)
In the second embodiment, the target value setting gradation and color processing LUT are used in the gradation and color processing LUT adjustment pattern image forming process in step K of FIG. The gradation and color processing LUT adjustment pattern image data 18 is formed on the recording medium 16. Further, in the normal print image forming process of step O, the normal print image data 10 is formed on the recording medium 16 using the adjusted gradation and color processing LUT 14 and the target value setting gradation and color processing LUT. This is different from the first embodiment. Other components of the image forming apparatus and the steps of the image forming method are the same as those in the first embodiment.
[0058]
Also, each step of the image forming method can be processed as a program using a computer. Furthermore, each step of the image forming method can be stored as a program in a computer-readable storage medium, and the program can be read from the storage medium into the computer and processed.
[0059]
By using the image forming apparatus, the image forming method, the image forming program, or the storage medium storing the image forming program according to the present embodiment, the user's desire for the image forming conditions such as the type of the recording medium 16 and the type of toner The normal print image data 10 can be formed based on the image quality.
[0060]
【The invention's effect】
By using a computer-readable storage medium storing an image forming apparatus, an image forming method, an image forming method program, or an image forming method program of the present invention, a normal print image is formed with a user-desired image quality. Can do.
[0061]
Furthermore, a normal print image can be formed with a desired image quality adjusted according to image forming conditions such as the type of recording medium, the type of toner, normal print image data, and the user of the image forming apparatus.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an image forming apparatus according to an embodiment of the present invention.
FIG. 2 shows a flowchart of an image forming method in the embodiment of the present invention.
FIG. 3 is a configuration diagram of a conventional image forming apparatus.
[Explanation of symbols]
10 normal print image data, 12 image processing unit, 14 gradation and color processing LUT, 16 recording medium, 18 gradation and color processing LUT adjustment pattern image data, 20 image quality adjustment pattern image data, 22 target value setting gradation And color processing LUT, 24 target setting pattern image data, 26 fixing patch sensor, 28 target image value, 30 image setting unit, 32 target setting unit, 34 storage unit, 36 measurement value, 38 image quality adjustment unit, 40 adjustment value.

Claims (14)

An image forming unit for forming a print image on a recording medium,
A target value setting gradation and color processing LUT, and an image quality adjustment unit for adjusting the gradation and color processing LUT;
In the image forming unit, target setting pattern image data formed on a recording medium is mechanically read using the target value setting gradation and color processing LUT adjusted by the image quality adjusting unit, and a target image value is obtained. A goal setting section to be set;
An image forming apparatus having
The image quality adjustment unit
The target value setting gradation and color processing LUT is determined by checking the image quality of the image quality adjustment pattern image data formed on the recording medium using the target value setting gradation and color processing LUT in the image forming unit. Adjust
In the image forming unit, gradation and color processing LUT adjustment pattern image data formed on a recording medium without using any of the gradation and color processing LUT and the target value setting gradation and color processing LUT are mechanically stored . Comparing the measured value obtained by reading with the target image value, and adjusting the gradation and color processing LUT according to the comparison result ,
The image forming unit includes:
Image forming apparatus and forming a normal print image data on a recording medium by using the gradation and color processing LUT adjusted by the image quality adjuster. An image forming unit for forming a print image on a recording medium,
A target value setting gradation and color processing LUT, and an image quality adjustment unit for adjusting the gradation and color processing LUT;
A fixing patch sensor for detecting the image quality of a printed image formed on a recording medium;
In the image forming unit, target setting pattern image data formed on a recording medium using the target value setting gradation and color processing LUT adjusted by the image quality adjusting unit is detected by the fixing patch sensor, and the target is set. A target setting unit for setting image values;
An image forming apparatus having
The image quality adjustment unit
The target value setting gradation and color processing LUT is determined by checking the image quality of the image quality adjustment pattern image data formed on the recording medium using the target value setting gradation and color processing LUT in the image forming unit. Adjust
The image forming unit fixes the gradation and color processing LUT and the gradation and color processing LUT adjustment pattern image data formed on the recording medium without using any of the target value setting gradation and color processing LUT. Compare the measured value detected by the patch sensor and the target image value, and adjust the gradation and color processing LUT according to the comparison result ,
The image forming unit includes:
Image forming apparatus and forming a normal print image data on a recording medium by using the gradation and color processing LUT adjusted by the image quality adjuster. The image forming apparatus according to claim 1 or claim 2,
An image forming apparatus using the target setting pattern image data including the same image pattern and the gradation and color processing LUT adjustment pattern image data. The image forming apparatus according to claim 2 .
The image forming apparatus, wherein the fixing patch sensor detects image quality at a detection position of the gradation and color processing LUT adjustment pattern image data corresponding to a detection position of the target setting pattern image data. The image forming apparatus according to claim 2 .
The image forming apparatus, wherein the fixing patch sensor is a densitometer or a color meter. The image forming apparatus according to any one of claims 1 to 5,
Further, at least one of the normal print image data, the type of the recording medium, the storage tray of the recording medium, the type of toner, or the user of the image forming apparatus, the target image value or the gradation and color processing LUT. An image forming apparatus comprising a storage unit that stores at least one of the following. And image quality adjustment pattern image forming step of forming a picture quality adjustment pattern image data on a recording medium by using the goal value setting tone and color processing LUT,
An adjustment value input step of confirming the image quality adjustment pattern image data formed on the recording medium and inputting an adjustment value;
A target value setting gradation and color processing LUT adjustment step of adjusting the target value setting gradation and color processing LUT based on the adjustment value;
A target setting pattern image forming step of forming target setting pattern image data on a recording medium using the target value setting gradation and color processing LUT;
A target image value setting step of mechanically reading target setting pattern image data formed on the recording medium and setting a target image value;
The gradation and color processing LUT adjustment for forming the gradation and color processing LUT adjustment pattern image data on the recording medium without using any of the target value setting gradation and color processing LUT and the gradation and color processing LUT A pattern image forming process;
The gradation and color processing LUT adjustment pattern image data formed on the recording medium is mechanically read to compare the measured value and the target image value, and according to the comparison result, the gradation and color A gradation and color processing LUT adjustment step for adjusting the color processing LUT;
A normal print image forming step of normal print image data is formed on a recording medium using the tones and color processing LUT,
An image forming method comprising: And image quality adjustment pattern image forming step of forming a picture quality adjustment pattern image data on a recording medium by using the goal value setting tone and color processing LUT,
An adjustment value input step of confirming the image quality adjustment pattern image data formed on the recording medium and inputting an adjustment value;
A target value setting gradation and color processing LUT adjustment step of adjusting the target value setting gradation and color processing LUT based on the adjustment value;
A target setting pattern image forming step of forming target setting pattern image data on a recording medium using the target value setting gradation and color processing LUT;
A target setting pattern image detection step of detecting an image of target setting pattern image data formed on the recording medium by a fixing patch sensor;
A target image value setting step of setting a target image value based on the detected image of the target setting pattern image data;
The gradation and color processing LUT adjustment for forming the gradation and color processing LUT adjustment pattern image data on the recording medium without using any of the target value setting gradation and color processing LUT and the gradation and color processing LUT A pattern image forming process;
A gradation and color processing LUT adjustment pattern image detection step of detecting an image of gradation and color processing LUT adjustment pattern image data formed on the recording medium by the fixing patch sensor;
The measured value obtained from the image of the detected gradation and color processing LUT adjustment pattern image data is compared with the target image value, and the gradation and color processing LUT are adjusted according to the comparison result. Tone and color processing LUT adjustment process;
A normal print image forming step of normal print image data is formed on a recording medium using the tones and color processing LUT,
An image forming method comprising: The image forming apparatus according to claim 7 or 8 ,
An image forming method using the target setting pattern image data including the same image pattern and the gradation and color processing LUT adjustment pattern image data. The image forming apparatus according to claim 8 .
The image forming method, wherein the fixing patch sensor detects image quality at a detection position of the gradation and color processing LUT adjustment pattern image data corresponding to a detection position of the target setting pattern image data. The image forming apparatus according to claim 8 .
The image forming method, wherein the fixing patch sensor is a densitometer or a color meter. The image forming apparatus according to any one of claims 11 claim 7,
Further, a target image value storage step of storing the target image value for at least one of the normal print image data, the recording medium type, the storage tray of the recording medium, the toner type, or the user of the image forming apparatus. Alternatively, the image forming method includes at least one of a gradation and color processing LUT storing step for storing the gradation and color processing LUT. And image quality adjustment pattern image forming step of forming a picture quality adjustment pattern image data on a recording medium by using the goal value setting tone and color processing LUT,
An adjustment value input step of confirming the image quality adjustment pattern image data formed on the recording medium and inputting an adjustment value;
A target value setting gradation and color processing LUT adjustment step of adjusting the target value setting gradation and color processing LUT based on the adjustment value;
A target setting pattern image forming step of forming target setting pattern image data on a recording medium using the target value setting gradation and color processing LUT;
A target image value setting step of mechanically reading target setting pattern image data formed on the recording medium and setting a target image value;
The gradation and color processing LUT adjustment for forming the gradation and color processing LUT adjustment pattern image data on the recording medium without using any of the target value setting gradation and color processing LUT and the gradation and color processing LUT A pattern image forming process;
The gradation and color processing LUT adjustment pattern image data formed on the recording medium is mechanically read to compare the measured value and the target image value, and according to the comparison result, the gradation and color A gradation and color processing LUT adjustment step for adjusting the color processing LUT;
A normal print image forming step of normal print image data is formed on a recording medium using the tones and color processing LUT,
An image forming program comprising: And image quality adjustment pattern image forming step of forming a picture quality adjustment pattern image data on a recording medium by using the goal value setting tone and color processing LUT,
An adjustment value input step of confirming the image quality adjustment pattern image data formed on the recording medium and inputting an adjustment value;
A target value setting gradation and color processing LUT adjustment step of adjusting the target value setting gradation and color processing LUT based on the adjustment value;
A target setting pattern image forming step of forming target setting pattern image data on a recording medium using the target value setting gradation and color processing LUT;
A target image value setting step for setting a target image value based on target setting pattern image data formed on the recording medium;
The gradation and color processing LUT adjustment for forming the gradation and color processing LUT adjustment pattern image data on the recording medium without using any of the target value setting gradation and color processing LUT and the gradation and color processing LUT A pattern image forming process;
The measured value obtained from the gradation and color processing LUT adjustment pattern image data formed on the recording medium is compared with the target image value, and the gradation and color processing LUT are adjusted according to the comparison result. Gradation and color processing LUT adjustment step to perform,
A normal print image forming step of normal print image data is formed on a recording medium using the tones and color processing LUT,
A computer-readable storage medium storing an image forming program.

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