Image processing apparatus, image processing method, and computer program product

An image processing method of drawing an image in units of band having an area, the image processing method comprising:

• reading, via a drawing processor, a halftone pattern from a first storage unit to draw a part of the image using the halftone pattern, if the drawing processor receives an instruction to read the halftone pattern;
• determining, via a analyzer, whether to transmit the instruction to the drawing processor to read the halftone pattern and execute drawing based on drawing commands by,
• first determining if the image belongs to the drawing band, and
• second determining if a flag indicates that the drawing processor has not read the halftone pattern for the drawing band,
• instructing the drawing processor to read the halftone pattern only if the first determining determines that the image belongs to the drawing band and the second determining determines that the flag indicates that the drawing processor has not read the halftone pattern for the drawing band;
• and
• instructing the drawing processor to execute the drawing if the first determining determines that the image belongs to the drawing band such that the drawing processor executes the drawing of the band without reading the halftone pattern associated with the band if the flag indicates that the drawing processor has read the halftone pattern for the drawing band.

A computer program product comprising:

• a non-transitory computer-usable medium having computer-readable program codes embodied in the medium, wherein the program codes when executed causing a computer to execute an image processing method of drawing an image in units of band having an area, the image processing method including,
• reading, via a drawing processor, a halftone pattern from a first storage unit to draw a part of the image using the halftone pattern, if the drawing processor receives an instruction to read the halftone pattern;
• determining, via a analyzer, whether to transmit the instruction to the drawing processor to read the halftone pattern and execute drawing based on drawing commands by,
• first determining if the image belongs to the drawing band, and
• second determining if a flag indicates that the drawing processor has not read the halftone pattern for the drawing band,
• instructing the drawing processor to read the halftone pattern only if the first determining determines that the image belongs to the drawing band and the second determining determines that the flag indicates that the drawing processor has not read the halftone pattern for the drawing band;
• and
• instructing the drawing processor to execute the drawing if the first determining determines that the image belongs to the drawing band such that the drawing processor executes the drawing of the band without reading the halftone pattern associated with the band if the flag indicates that the drawing processor has read the halftone pattern for the drawing band.