JP2019186856A - Image processing apparatus, image processing method, recording system, and recording apparatus - Google Patents

Abstract

To provide an image processing apparatus and an image processing method, capable of inhibiting a line width of straight line data from being changed by resolution conversion.SOLUTION: By determining whether a line width of a line object in image data can be recorded according to a specified line width, when there is a line object that cannot be recorded according to the specified line width, recording is performed after converting resolution of the object to recordable resolution.SELECTED DRAWING: Figure 6

Description

  The present invention relates to an image processing apparatus that performs resolution conversion of input image data and outputs the image data, an image processing method thereof, a recording system, and a recording apparatus.

  Conventionally, when image data is recorded by a recording apparatus, an output resolution can be set. When the resolution of the image data and the output resolution of the recording apparatus are different, recording is performed by converting the resolution of the received image data into the resolution of the recording apparatus. At this time, for example, when image data is converted to a low resolution and transmitted, a thin line may be lost due to thinning of some pixels in the image by the conversion process. This means that when the image data is simply thinned out and reduced to ½, the 2-dot line becomes a 1-dot line, but the 1-dot line disappears.

  On the other hand, in Patent Document 1, in order to prevent the lines from disappearing when resolution conversion is performed, the logical sum of the line on which the fine line or fine dot is drawn and the data one line before is performed. A method for extending the line width and fine dots has been proposed.

JP 2017-028399 A

  However, when the output resolution is not suitable for the width of one line specified by the image data, the line width may be increased. For example, if the image data is a line object of 0.125 pt (point = unit of line width), 0.25 pt is the minimum size that can be drawn with 300 dpi resolution conversion. The line will be thicker than specified.

  Therefore, an object of the present invention is to provide an image processing apparatus, an image processing method, a recording system, and a recording apparatus that can prevent the line width of a line segment object from being changed by resolution conversion.

  Therefore, an image processing apparatus according to the present invention is an image processing apparatus that transmits image data to be recorded by a recording apparatus to the recording apparatus, and that obtains a first resolution selected for recording the image data. And, when the line width of the line segment object included in the image data is less than a predetermined line width, the line segment object less than the predetermined line width is converted to a second resolution higher than the first resolution, Resolution conversion means for converting other than line segment objects less than a predetermined line width to the first resolution, image data converted to the first resolution by the resolution conversion means, and line segment objects converted to the second resolution Transmitting means for transmitting the information to the recording apparatus.

  ADVANTAGE OF THE INVENTION According to this invention, the image processing apparatus and image processing method which can suppress that the line width of a line segment object is changed by resolution conversion are realizable.

It is the figure which showed the structure of the recording system. FIG. 3 is a block diagram illustrating functions of a host PC and a recording apparatus. (A) to (c) are diagrams showing resolution conversion processing at the time of conventional recording. It is the figure which showed the flow of data processing. It is the figure which showed the screen which performs recording resolution setting, and the resolution conversion notification screen. It is the flowchart which showed the process of transmission in host PC. 6 is a flowchart showing recording processing in the recording apparatus. It is a resolution conversion notification screen notified before performing resolution conversion processing. It is the flowchart which showed the process of transmission in host PC.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing a configuration of a recording system according to the present embodiment. The recording system of this embodiment includes a host PC 101 (image processing apparatus) that generates recording data and the like, and a recording apparatus 102 that executes recording in accordance with an instruction from the host PC 101. In the present embodiment, the recording apparatus 102 is an ink jet recording apparatus. The host PC 101 and the recording apparatus 102 can communicate with each other via the connection cable 103, and the recording apparatus 102 ejects ink to the recording medium 104 such as recording paper based on the recording data received from the host PC 101. To record.

  In the recording apparatus 102, each of the recording heads 113 (113 a to 113 d) has an ink discharge port with a predetermined density in the width direction of the recording medium P (direction intersecting the transport direction) and longer than the effective recording width of the recording medium P. Is a so-called line-type recording head. The recording heads 113a to 113d are arranged with a plurality of ejection openings that eject yellow ink (Y), magenta ink (M), cyan ink (C), and black ink (K), respectively. Each ejection port includes a heater for ejecting ink.

  The pickup roller 114 is rotationally driven by a drive mechanism (not shown), and separates the recording media P stacked on the tray one by one and feeds them into the recording apparatus 102. The conveyance mechanism for the recording medium P includes conveyance rollers 115A and 115B arranged at a predetermined distance in the conveyance direction of the recording medium P, and a belt 116 stretched around these rollers. The transport mechanism transports the fed recording medium P relative to the recording heads 113a to 113d, and discharges the recording medium P on which recording is performed in order by the recording heads 113a to 113d during the transport. Eject to paper tray.

  A detection sensor 112 is disposed in the conveyance path of the recording medium P and detects the leading edge of the page of the recording medium P. Based on this detection timing, recording by the recording heads 113a to 113d, and conveyance stop and restart are performed.

  Although this embodiment will be described with respect to an embodiment using an ink jet recording head, it is apparent from the following description that the present invention can also be applied to the case where a recording head of another method such as thermal transfer is used. It is. In addition, the ink jet method may use other methods such as a mode in which bubbles are generated in ink using an electrothermal conversion element (heater) to generate discharge energy, and a mode in which discharge energy is generated by a piezo element. . In the present embodiment, a recording element is configured by a heater that generates energy for ejecting ink, and dots are formed (recorded) on the recording medium P by the recording element. In this regard, for example, the form in which dots are formed by a thermal transfer method is also dot recording by a recording element, and the present invention can be applied.

  FIG. 2 is a block diagram illustrating functions of the host PC 101 and the recording apparatus 102. The host PC 101 can be a general personal computer, for example. Under the control of the operating system (OS), the CPU 220 of the host PC 101 executes various programs such as an execution program (to be described later) stored in a storage area such as a RAM to execute the operation of this embodiment.

  In the host PC 101, a PCI bus that is a local bus is hierarchically configured via a host / PCI bridge 221 and a PCI bridge 228, and constitutes a system bus as a whole. Each functional block in the host PC 101 exchanges data with each other via the system bus. Note that a high-speed memory (not shown) called an L2 cache is connected to the system bus, and stores codes and data that the CPU 220 always accesses. The main memory 222 is a storage area for temporarily storing execution programs such as an operating system (OS), application programs, and printer drivers. The main memory 222 is also used as a working memory area for executing each program. The main memory 222 also stores RGB image data rendered by an application program, ink color data corresponding to each ink color of each recording head of the recording apparatus 102 that has been color space converted from the RGB image data, and the like. In the present embodiment, the ink color data is binary image data corresponding to each ink color of black, cyan, magenta, and yellow.

  The ROM 229 stores a BIOS (Basic Input Output System) program for controlling input / output devices such as the input device 232 and the DVD-ROM 231, an initialization program at power-on, a self-diagnosis program, and the like. Here, the input device 232 is, for example, a keyboard or a pointing device. For example, the user can instruct recording on the recording apparatus 102 by the input device 232. The EEPROM 230 is a rewritable nonvolatile memory for storing various parameters used permanently. An operating system (OS), various application programs, a program for executing processing to be described later with reference to FIG. 3, a printer driver corresponding to the recording apparatus 102, and the like are read from the HDD 227 to the main memory 222 and executed by the CPU 220.

  The host PC 101 performs binarization processing such as an error diffusion method on the image data, creates binary recording data, and transmits it to the recording apparatus 102 via the communication interface 223. The communication interface 223 is, for example, a USB or a network, and is connected to the PCI bus. The CRTC 224 is a video controller, reads the display bitmap data written in the VRAM 225 by the CPU 220, and transfers it to the display 226 such as an LCD. For example, the user can recognize the processing progress and processing result of the recording job instructed to record via the display 226.

  On the other hand, the printing apparatus 102 drives and controls a RAM 202 that stores printing data, a ROM 203 that stores control programs, ejection timing adjustment values, and the like, a communication device 204 that serves as an interface for communicating with the host PC 101, and each printing head. A recording head control unit 205 is included. In addition, the recording apparatus 102 includes a drive unit 206 that drives and controls an actuator for conveying a recording medium, and a memory R / W circuit 207 that controls reading and writing (R / W) with respect to the memories 208 to 211 in each recording head. including. The CPU 201 executes various programs stored in the RAM 202 to realize the operation of this embodiment. The recording apparatus 102 is equipped with line-type recording heads (hereinafter simply referred to as recording heads) corresponding to nozzle rows of four colors of black, cyan, magenta, and yellow. In the present embodiment, the four colors are described. However, a color other than the four colors such as light cyan or a special color ink according to a specific purpose may be included. Each recording head is detachably attached to a carriage or the like.

  3A and 3B are diagrams showing resolution conversion processing in a conventional image processing apparatus. FIG. 3A shows a process in the case where the line object 302 drawn with 0.125 pt (equivalent to 0.044 mm) is included in the image data 301 and converted into the 600 dpi image data 303 and recorded. Yes. At this time, if the resolution of the recording apparatus is the same 600 dpi, the minimum dot size that can be drawn is about 0.042 mm, so the image data 303 converted into a small 1-dot-width line segment remains as 1-dot-width image data 304 with the same resolution. Recording processing is performed by the recording device. As a result, the recording result 305 can obtain the same result as the original image data 301.

  FIG. 3B shows processing when image data 301 is converted into 300 dpi image data 306 and recorded. Since the minimum dot size that can be drawn at 300 dpi is about 0.085 mm, a line segment of 0.125 pt is converted into image data 306 having a large 1-dot width in the image processing apparatus or disappears. When converted into image data 306 having a large 1-dot width so as not to disappear, if the resolution of the recording apparatus is 600 dpi, the image data is converted into image data 307 having a small 2-dot-width line segment and recorded. As a result, the recording result 308 is a line segment corresponding to 0.25 pt thicker than the original image data 301.

  Therefore, in the present embodiment, the resolution conversion process is performed by the following method, thereby suppressing the line width of the image data from being changed by the resolution conversion. The method will be described below.

  FIG. 4A is a diagram showing a flow of data processing when general resolution conversion processing is performed on the image data used in the present embodiment, and FIG. It is the figure which showed the flow of the data processing in the case of performing resolution conversion processing. The image data 401 is data in which a frame line data 402 and a character string 403 are arranged within the frame line. The resolution of the image data 401 is 300 dpi, and the resolution of the recording apparatus is 600 dpi.

  Here, when image data is created by an image editing application in a computer, the image size is generally managed in units of “point (pt)”, and 1 pt is 1/72 inch (about 0.353 mm). In the recording apparatus of this embodiment, the minimum recording width of each resolution is 0.25 pt at 300 dpi and 0.125 pt at 600 dpi.

  The frame line data 402 in FIG. 4A is drawn with a line width of 0.125 pt when created on the host PC 101. The character string 403 is created with an arbitrary size larger than the minimum recording width. In this case, when recording is performed as usual, the line width 0.125 pt in which the frame line data 402 is drawn is smaller than the minimum recording width of resolution 300 dpi. For this reason, in recording, the frame data 405 having a minimum recording width of 0.25 pt at a resolution of 300 dpi is converted into a thick line. In this case, the output result 404 is different from the created image data 401.

  Therefore, in this embodiment, when the image data 401 is recorded, the host PC 101 acquires the resolution on the recording apparatus side (recording apparatus resolution), and compares the image resolution selected by the host PC 101 with the recording apparatus resolution. Do. When the image resolution is 300 dpi by this comparison, the frame data 402 of less than 0.25 pt in the image data 401 and the other character string data 403 are discriminated, and the frame data 402 of less than 0.25 pt is obtained. On the other hand, resolution conversion processing to high resolution is performed. That is, recording is performed with a resolution of 600 dpi and a line width of 0.125 pt.

  By this resolution conversion, the frame line data 402 is converted into frame line data having a high resolution (minimum recording width 0.125 pt). Since the resolution is different between the image data 407 including the frame line data subjected to the resolution conversion and the image data 408 including the character string data 403 and not subjected to the resolution conversion, the same file cannot be formed. Therefore, data with different resolution settings is recorded by creating image data 407 with converted resolution as a form overlay file format and performing overlay recording with image data 408 without resolution conversion.

  In this way, it is determined whether the line width of the line segment object in the image data can be recorded according to the specified line width, and if there is an object that cannot be recorded according to the specified line width, Recording is performed after converting the resolution to a recordable resolution. By doing so, it is possible to prevent the line width of the line segment object in the image data from being changed by resolution conversion.

  FIG. 5A is a diagram illustrating an example of a screen for setting the image resolution in the present embodiment, and FIG. 5B is a resolution conversion notification screen that is notified before performing the resolution conversion processing. The recording setting screen 501 includes an image data preview display 502 and a resolution selection display 503. The preview display 502 displays image data 401 to be recorded on the screen. The resolution selection display 503 lists the settable resolutions by pull-down and can be selected by the user. The host PC 101 creates recording data based on the contents selected by the user from the listed resolutions, and when the recording data is transmitted to the recording apparatus 102, the recording apparatus 102 performs recording.

  When the resolution selected in the resolution selection display 503 is lower than the recording apparatus resolution, the line width of the frame line data 402 arranged in the image data 401 in FIG. 4 is smaller than the minimum recording width of the selected resolution setting display. In this case, the resolution conversion notification screen 504 shown in FIG. 5B is displayed. On this screen, the position of the frame line data 505 whose line width is changed in the image data 401 is displayed as a preview 506. At the same time, a warning message for notifying that there is frame line data 505 whose line width is changed is displayed on the warning display unit 507. Further, a resolution conversion method selection unit 508 for the frame line data 505 whose line width is changed is provided on this screen so that any setting can be selected when this screen is displayed.

  As examples of selectable resolution conversion methods, “record as it is” 509 and “record only lines” 510 are listed. When “record as it is” 509 is selected, the image processing apparatus 101 transmits the image to the recording apparatus 102 without performing resolution conversion. Since recording is performed at 300 dpi in the recording apparatus 102, an output result in which the line width is changed is obtained. If “Record only line cleanly” 510 is selected, resolution conversion processing is executed, and only a line segment object (frame line data 402) of less than 0.25 pt is converted to 600 dpi and transmitted. In the recording apparatus 102, the character data 403 has an image quality of 300 dpi, but the frame line data 402 has a high resolution, so that an output result of the line width specified by the image data 401 can be obtained for the line segment object.

  FIG. 6 is a flowchart showing a transmission process in the host PC of this embodiment. Hereinafter, transmission processing in the host PC of this embodiment will be described using this flowchart. When transmission is started, resolution setting at the time of recording is confirmed in step S601. In this process, the resolution information selected and set in the resolution selection display 503 in FIG. 5A (image resolution acquisition) and the resolution information of the recording device 102 (recording device resolution acquisition) are acquired. After that, in step S602, the image data 401 is analyzed, and the object arrangement in the image data 401 is confirmed. Thereafter, in step S603, it is determined whether or not a line segment object (frame line data 402) exists from the data analyzed in step S602 (line segment object determination). When the line segment object (frame line data 402) exists, the process proceeds to step S604, and when the line segment object (frame line data 402) does not exist, the process proceeds to step S611 and the recording apparatus 102 as usual. The image data 401 is transmitted to and the process ends.

  When the process proceeds to step S604, the recording apparatus 102 has a higher resolution by comparing the image resolution selected and set based on the acquisition result in step S601 and the recording apparatus resolution of the recording apparatus 102 (resolution comparison). Determine whether or not. If the recording apparatus 102 has a higher resolution, the process proceeds to step S605. Otherwise, the process proceeds to step S611, and the image data 401 is transmitted to the recording apparatus 102 as usual, and the process ends. When the process proceeds to step S605, the line width of the line segment object (frame line data 402) arranged in the image data 401 is confirmed, and the line width (minimum line width) narrower than the minimum recording width at the low resolution image resolution. It is determined whether or not (line width comparison). In the present embodiment, since the minimum recording width of image data having a low resolution (300 dpi) is set to 0.25 pt, it is determined whether the image data is thinner than 0.25 pt. If the line width of the line segment object (frame line data 402) is smaller than 0.25pt from the comparison result (judgment result), the process proceeds to step S606. In other cases, the process proceeds to step S611, and the image data 401 is transmitted to the recording apparatus 102 as usual, and the process ends.

  When the process proceeds to step S606, the resolution conversion notification screen 504 of FIG. 5B is displayed. The processing method options are displayed on the screen, and the process waits until a conversion method for the image data 401 is selected from the notification screen. When an option is selected by the user, it is determined in step S607 which selection has been made from the displayed screen. If “Record line only cleanly” 510 is selected, the process proceeds to step S608. In other cases, the process proceeds to step S611, and the image data 401 is transmitted to the recording apparatus 102 as usual, and the process ends. When the process proceeds to step S608, resolution conversion target data (line segment object of less than 0.25 pt) in the object arrangement in the image data 401 specified in step S602 is converted into form data. Further, non-target data is handled as overlay data.

  In step S609, resolution conversion is performed on the form data converted in step S608. In this embodiment, the resolution is changed to 600 dpi. Thereafter, in step S610, the form data subjected to the resolution conversion and the overlay data not to be converted are transmitted to the recording apparatus 102, and the process is terminated.

  FIG. 7 is a flowchart showing a recording process in the recording apparatus 102. Hereinafter, the recording process of this embodiment will be described with reference to this flowchart. When the recording process is started, the recording data transmitted from the host PC 101 is received in step S701. Thereafter, in step S702, it is determined whether the received recording data is form overlay recording or normal recording. If it is form overlay recording, the process proceeds to step S703. If it is not form overlay recording, the process proceeds to step S704. When the process proceeds to step S703, the form data transmitted from the host PC 101 and the overlay data are combined. In step S704, recording is executed and the process is terminated.

  In this way, it is determined whether the line width of the line object in the image data can be recorded according to the specified line width, and if there is a line object that cannot be recorded according to the specified line width, On the other hand, recording is performed after converting the resolution to a recordable resolution. Thus, an image processing apparatus and an image processing method capable of suppressing the line width of the line segment object from being changed by resolution conversion can be realized.

(Other embodiments)
Other embodiments of the present invention will be described. Since the basic configuration is the same as that of the above-described embodiment, only the characteristic configuration will be described.

  FIG. 8 is a resolution conversion notification screen that is notified before performing the resolution conversion processing in the present embodiment. In this embodiment, “clean recording” is added as a conversion method, and it is possible to select from “recording as it is”, “clean recording”, and “record only lines cleanly”. The resolution conversion notification screen of this embodiment includes a resolution conversion notification screen 801, a preview display 802, a warning display unit 803, and a resolution conversion method selection unit 804. When “clean recording” 805 is selected as the conversion method in the resolution conversion method selection unit 804, resolution conversion is performed on the entire image data (both frame line data and character string data), and the same resolution as that of the recording apparatus 102 is obtained. Recording is performed as (600 dpi).

  FIG. 9 is a flowchart showing transmission processing in the host PC 101 of this embodiment. Hereinafter, transmission processing in the host PC of this embodiment will be described using this flowchart. Since steps S901 to S905 and steps S910 to S912 are the same as those in the above-described embodiment (see FIG. 6), the description thereof is omitted.

  When the process proceeds from step S905 to step S906, the resolution conversion notification screen 801 shown in FIG. 8 is displayed. The screen displays processing method options, and waits until a conversion method for the image data 802 is selected from the notification screen. If an option is selected by the user, it is determined in step S907 whether “Record only lines” is selected. Here, when “record only lines” is selected, the process proceeds to step S910. In cases other than that described here, process flow proceeds to Step S908. In step S908, it is determined whether “clean recording” 805 has been selected. If “clean recording” 805 has been selected, the process proceeds to step S909. If “clean recording” 805 has not been selected, the image data 802 is transmitted to the recording apparatus 102 in the same manner as usual, and the processing ends. When the process proceeds to step S909, the entire image data (frame line data and character string data) is converted to the selected high resolution (600 dpi). Thereafter, in step S914, the converted image data is transmitted to the recording apparatus, and the process is terminated.

  In the above embodiment, when the resolution selected in the resolution selection display 503 is lower than the recording device resolution, it is determined whether the line width of the line segment object is less than 0.25 pt. However, the recording device resolution is 600 dpi. Assuming in advance, when the line width of the line segment object is less than 0.25 pt, it may be converted into a uniform 600 dpi form overlay file.

  In the above embodiment, an example in which resolution conversion is performed on the host PC side has been described. However, when line width analysis of image data is performed on the recording apparatus side and recording is performed at the set resolution, the line width of the line segment object is determined. In the case where the color becomes thicker, the ink color data corresponding to each ink color may be transmitted to the recording head after resolution conversion is performed on the line segment object.

101 Host PC
102 Recording Device 303 Recording Head 401 Image Data 402 Frame Line Data

Claims (17)

An image processing apparatus for transmitting image data to be recorded by a recording apparatus to the recording apparatus,
Image resolution acquisition means for acquiring a first resolution selected in recording the image data;
When the line width of the line segment object included in the image data is less than a predetermined line width, the line segment object having the width less than the predetermined line width is converted to a second resolution higher than the first resolution, Resolution conversion means for converting a non-line-segment object other than a line width to the first resolution;
Transmitting means for transmitting the image data converted to the first resolution by the resolution converting means and the line segment object converted to the second resolution to the recording device;
An image processing apparatus comprising:   The image processing apparatus according to claim 1, wherein the predetermined line width is a minimum line width that can be drawn at the first resolution.   The image processing apparatus according to claim 1, wherein the second resolution is a resolution capable of drawing a line width of a line segment object included in the image data. A recording device resolution acquisition means for acquiring a third resolution recordable by the recording device;
4. The resolution converting unit converts a line segment object having a width less than the predetermined line width to the second resolution when the third resolution is the second resolution. The image processing apparatus according to any one of the above. Notification means for notifying the line segment object less than the predetermined line width, and selection means for selecting whether to convert the line segment object to the second resolution,
When it is selected by the selection means that the line segment object having the line width less than the predetermined line width is changed to the second resolution, the resolution converting means converts the line object having the line width less than the predetermined line width to the second resolution. The image processing apparatus according to claim 1, wherein the image processing apparatus is converted into an image processing apparatus.   The resolution conversion unit converts the line segment object converted to the second resolution into form data for form overlay recording, and converts the image data converted to the first resolution into overlay data. The image processing apparatus according to claim 5. An image processing apparatus for transmitting image data to be recorded by a recording apparatus to the recording apparatus,
Image resolution acquisition means for acquiring a first resolution selected in recording the image data;
When the line width of a line segment object included in the image data is less than a predetermined line width, the image data is converted to a second resolution higher than the first resolution, and the line segment object included in the image data Resolution conversion means for converting the image data to the first resolution when the line width is equal to or greater than the predetermined line width;
An image processing apparatus comprising: transmission means for transmitting the image data converted by the resolution conversion means to the recording apparatus.   The image processing apparatus according to claim 7, wherein the predetermined line width is a minimum line width that can be drawn with the first resolution.   The image processing apparatus according to claim 7, wherein the second resolution is a resolution capable of drawing a line width of a line segment object included in the image data. A recording device resolution acquisition means for acquiring a third resolution recordable by the recording device;
10. The method according to claim 7, wherein the resolution conversion unit converts the image data to the second resolution when the third resolution is the second resolution. 11. Image processing apparatus. A notification means for notifying the line segment object less than the predetermined line width; and a selection means for selecting whether to convert the image data to the second resolution,
8. The resolution conversion unit converts the image data to the second resolution when the selection unit selects to change the image data to the second resolution. The image processing apparatus according to any one of 10. Notification means for notifying the line segment object less than the predetermined line width, and whether to convert the image data to the second resolution, or to convert only the line segment object less than the predetermined line width to the second resolution And selecting means for selecting
When the selection means selects to change the image data to the second resolution, the resolution conversion means converts the image data to the second resolution, and the selection means less than the predetermined line width. When it is selected to convert only the line object of the predetermined line width to the second resolution, the resolution converting unit converts only the line segment object having a width less than the predetermined line width to the second resolution, and the predetermined line. 11. The image processing apparatus according to claim 7, wherein image data other than a line segment object having a width less than that is converted into the first resolution. 11.   The resolution conversion unit converts the line segment object converted to the second resolution into a form overlay when the selection unit selects to convert only the line segment object less than the predetermined line width to the second resolution. The image processing apparatus according to claim 12, wherein the image data is converted into recording form data, and the image data converted into the first resolution is converted into overlay data. An image processing method for processing image data to be recorded by a recording apparatus,
An image resolution acquisition step of acquiring a first resolution selected in recording the image data;
When the line width of the line segment object included in the image data is less than a predetermined line width, the line segment object having the width less than the predetermined line width is converted to a second resolution higher than the first resolution, A resolution conversion step of converting a line segment object other than a line width object to the first resolution;
An image processing method comprising: An image processing method for processing image data to be recorded by a recording apparatus,
An image resolution acquisition step of acquiring a first resolution selected in recording the image data;
When the line width of a line segment object included in the image data is less than a predetermined line width, the image data is converted to a second resolution higher than the first resolution, and the line segment object included in the image data A resolution conversion step of converting the image data to the first resolution when the line width of the image data is equal to or greater than the predetermined line width;
An image processing method comprising: In a recording system comprising: a recording apparatus that performs recording on a recording medium; and an image processing apparatus that transmits image data to be recorded by the recording apparatus to the recording apparatus.
The image processing apparatus includes:
Image resolution acquisition means for acquiring a first resolution selected in recording the image data;
When the line width of the line segment object included in the image data is less than a predetermined line width, the line segment object having the width less than the predetermined line width is converted to a second resolution higher than the first resolution, Resolution conversion means for converting a non-line-segment object other than a line width to the first resolution;
Transmitting means for transmitting the image data converted to the first resolution by the resolution converting means and the line segment object converted to the second resolution to the recording device;
A recording system comprising: In a recording apparatus comprising: a recording unit that performs recording on a recording medium; and a transmission unit that transmits image data recorded by the recording unit to the recording unit.
Image resolution acquisition means for acquiring a first resolution selected in recording the image data;
When the line width of the line segment object included in the image data is less than a predetermined line width, the line segment object having the width less than the predetermined line width is converted to a second resolution higher than the first resolution, Resolution conversion means for converting a non-line-segment object other than a line width to the first resolution;
With
The recording apparatus transmits the image data converted to the first resolution by the resolution conversion means and the line segment object converted to the second resolution to the recording means.

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