Patent Number: 6,332,666

Title: Printing apparatus, resolution conversion printing method for printing apparatus, and storage medium storing computer-readable program

Abstract: In a laser beam printer, it is thought that the number of scanning lines for the unit length in a sheet carrying direction (a resolution of a sub scanning direction) can be changed by making processing speed in the sheet carrying direction changeable. Further, in a general printer, raster data is generated based on vector data or code data from a superior apparatus (expansion). Ordinarily, in the printer, the raster data corresponding to resolution of a printing unit is generated by the expansion, and the generated raster data is output to the printing unit. In a printing apparatus which has the above printing unit capable of changing at least a resolution of a predetermined direction, even when the printing unit prints the data from the superior apparatus with a resolution 1/N times (N is an integer of two or more) a predetermined resolution for the predetermined direction, the printing data is expanded into the raster data with the predetermined resolution, and the resolution of the predetermined direction of the raster data is converted by generating the pixel value of one pixel, on the basis of pixel values of N pixels aligned with the predetermined direction of the obtained raster data.

Inventors: Ikeda; Sanae (Yokohama, JP)

Assignee: Canon Kabushiki Kaisha

International Classification: G06K 15/12 (20060101); B41J 002/15 ()

Expiration Date: 12/25/2018