The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 25, 2001
Filed:
May. 30, 2000
Sanae Ikeda, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
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.