JP2005342962A5

JP2005342962A5 -

Info

Publication number: JP2005342962A5
Application number: JP2004163744A
Authority: JP
Filing date: 2004-06-01
Publication date: 2007-06-28
Anticipated expiration: 2024-06-01

Claims

Recording data used in an inkjet recording apparatus that performs recording by reciprocally scanning a recording head in which a plurality of nozzle arrays corresponding to each of a plurality of colors of ink are arranged in a predetermined direction on the recording medium is generated. An image processing apparatus,
Storage means for storing at least two types of conversion tables as conversion tables used for generating the recording data;
Determination means for determining whether or not a predetermined number or more of pixels that need to be switched in the conversion table are included in the image data of an area to be recorded in one scan;
Switching means for switching between the two types of conversion tables in accordance with the scanning direction when the determination means makes a positive determination;
An image processing apparatus comprising:

The determination means are included in the image data of the area to be printed by one scanning, when a pixel of a predetermined or more color difference between the case that will be recorded occurs at backward scan that will be recorded in the forward scan is more than a predetermined number The image processing apparatus according to claim 1, wherein the image processing apparatus determines whether or not the image processing is in progress.

The image processing apparatus according to claim 1, wherein the determination unit determines whether or not a predetermined number or more of pixels other than black are included in image data of an area to be recorded in one scan.

2. The determination unit according to claim 1, wherein the determination unit determines whether or not a predetermined number or more of pixels having a predetermined amount or more of ink use are included in image data of an area to be recorded in one scan. Image processing device.

5. The image processing apparatus according to claim 1, wherein the conversion table includes a conversion table that performs a process of converting RGB data into data corresponding to ink.

The storage means stores first and second conversion tables as the at least two types of conversion tables,
(A) When the determination unit makes a negative determination, image processing is performed using the first conversion table regardless of whether the scanning direction is the forward direction or the backward direction, and (B) the determination unit If the scanning direction is the forward direction, image processing is performed using the first conversion table. If the scanning direction is the backward direction, the second conversion table is used. It further comprises image processing means for performing image processing,
Wherein the image processing means, any one of claims 1 to 5, wherein performing the process of the (B) than to switch the second conversion table and the first conversion table by said switching means The image processing apparatus according to item .

Recording data used in an inkjet recording apparatus that performs recording by reciprocally scanning a recording head in which a plurality of nozzle arrays corresponding to each of a plurality of colors of ink are arranged in a predetermined direction on the recording medium is generated. An image processing apparatus,
Determining means for determining whether or not an area to be recorded in one scan of the recording head is an area in which color unevenness is likely to occur;
When it is determined that the color unevenness is likely to occur, first image processing is performed when the recording data for recording in the forward scanning is generated, and the recording for recording in the backward scanning is performed. An image processing means for executing the second image processing when generating the recording data;
The color when recording data obtained by converting predetermined RGB data through the first image processing is different from the color when recording data converted through the second image processing is recorded. An image processing apparatus.

The area where color unevenness is likely to occur is (A) an area including a predetermined number or more of pixels that cause a color difference of a predetermined level or more when recorded by forward scanning and backward scanning, and (B) other than black the image processing apparatus according to claim 7, region including pixels more than a predetermined number or (C) the amount of the ink, is characterized in that any one area, that includes more than a predetermined number of pixels or predetermined .

The first and second image processing includes processing for converting input RGB data into color separation data corresponding to ink used in a printing apparatus, and processing for quantizing the color separation data to generate multivalued data The image processing apparatus according to claim 7, wherein the image processing apparatus is at least one of a process of generating a binary data by assigning a dot arrangement pattern to the multi-valued data .

Image processing for generating recording data used in an ink jet recording apparatus that performs recording by reciprocally scanning a recording head in which nozzle arrays corresponding to each of a plurality of colors of ink are arranged in a predetermined direction on the recording medium. A method,
A storage step of storing in the storage means a first conversion table for recording in forward scanning and a second conversion table for recording in backward scanning as conversion tables used for generating the recording data;
A determination step of determining whether or not a predetermined number or more of pixels that need to be switched in the conversion table are included in image data of an area to be recorded in one scan;
When a positive determination is made in the determination step, a switching step of switching the conversion table according to the scanning direction;
An image processing method comprising:

Installed in a computer device connected to an ink jet recording apparatus that performs recording by reciprocally scanning a recording head in which a nozzle row corresponding to each of a plurality of colors of ink is arranged in a predetermined direction on the recording medium; A program for generating recording data used in a recording device,
A storage step of storing in the storage means a first conversion table for recording in forward scanning and a second conversion table for recording in backward scanning as conversion tables used for generating the recording data;
A determination step of determining whether or not a predetermined number or more of pixels that need to be switched in the conversion table are included in image data of an area to be recorded in one scan;
A switching step of switching the conversion table according to the determination in the determination step;
For causing a computer device to execute the program.