High resolution printing

A recording method wherein a printer prints an image on a recording medium by performing a plurality of printing scans, including a first printing scan and a second printing scan for one pixel area of the recording medium, comprising the steps of:

• transferring low resolution print data from a host computer to the printer;
• expanding in the printer the low resolution print data to high resolution print data with pixel patterns, including a first pixel pattern and a second pixel pattern;
• and
• changing the pixel pattern for the one pixel area to the first pixel pattern in the first printing scan and to the second pixel pattern in the second printing scan in each of the plurality of printing scans.

A recording method for printing data on a recording medium, wherein a host computer transfers data to a printer that prints the data by performing a plurality of printing scans with a print head that prints with at least one color, comprising the steps of:

• said host computer generating scan data for each of said plurality of printing scans;
• and
• said host computer performing a first image process or a second image process to each of the generated scan data,
• wherein the scan data processed in one of the first or second image processes is printed in each of the plurality of printing scans of the print head, and the first image process is a process for printing scan data in low resolution by the print head and the second image process is a process for printing scan data in high resolution by the print head.

A recording method wherein a printer prints an image on a recording medium by performing a plurality of printing scans, comprising the steps of:

• transferring low resolution print data and data expansion pattern information from a host computer to the printer;
• expanding in the printer the low resolution print data to high resolution print data using the data expansion pattern information;
• and
• printing an image on the recording medium based on the high resolution print data obtained in said expanding step.

A method for processing image data to be printed by a printer that prints an image on a recording medium by performing a plurality of printing scans, comprising the steps of:

• generating scan data for printing the image;
• organizing the scan data into a first group of scan data comprising data to be printed with black ink, a second group of scan data comprising data to be printed with ink other than black ink and to be printed in a first scanning direction, and a third group of scan data comprising data to be printed with ink other than black ink and to be printed in a second scanning direction opposite said first scanning direction;
• and
• processing each of the first, second, and third groups of scan data individually with a respective process specific to each group to obtain corrected scan data.

A computer-readable medium which stores computer-executable process steps for processing image data to be printed by a printer that prints an image on a recording medium by performing a plurality of printing scans, the computer-executable process steps comprising:

• generating scan data for printing the image;
• organizing the scan data into a first group of scan data comprising data to be printed with black ink, a second group of scan data comprising data to be printed with ink other than black ink and to be printed in a first scanning direction, and a third group of scan data comprising data to be printed with ink other than black ink and to be printed in a second scanning direction opposite said first scanning direction;
• and
• processing each of the first, second, and third groups of scan data individually with a respective process specific to each group to obtain corrected scan data.

A print driver in which image data is processed to correct image density values, comprising:

• generating scan data for printing an image;
• organizing the scan data into a first group of scan data comprising data to be printed with black ink, a second group of scan data comprising data to be printed with ink other than black ink and to be printed in a first scanning direction, and a third group of scan data comprising data to be printed with ink other than black ink and to be printed in a direction opposite said first scanning direction;
• and
• processing each of the first, second, and third groups of scan data individually with a respective process specific to each group to obtain corrected scan data.

A recording method for printing data on a recording medium by performing a plurality of printing scans with a print head having ink ejection nozzles for ejecting ink of at least a first and a second color, the method comprising the steps of:

• driving the print head across the recording medium to eject at least the first color ink and/or the second color ink onto the recording medium;
• ejecting the first color ink with a first power and the second color ink with a second power in a first printing scan by the print head;
• and
• ejecting the second color ink with a third power larger than the second power in a second printing scan by the printing head.