IMAGE FORMING APPARATUS

摘要

An image forming apparatus which can reduce the required number of line buffers and random number generation circuits when performing a magnification changing process in a band process. The CPU 51 determines a range of a random number value (random number value rnd) which is generated by a random number generator, based on the scanning width (band process width d) and the length in a sub-scanning direction of an area (sub-scanning length ay). The CPU 51 receives a random number (random number value rnd), which is in the above range, and performs image processing in which a pixel is inserted or deleted at the position determined by the received random number (random number value rnd).

主权项

1. An image forming apparatus comprising:
a dividing unit configured to divide received image data into two or more areas; a random number generation unit configured to generate a random number value for specifying a position for inserting or deleting a pixel for each divided area; a determination unit configured to determine a range of a random number value generated by the random number generation unit based on a scanning width of in a scan of the image data in a main scanning direction and a length in a sub-scanning direction of the area; and an image processing unit configured to perform image processing for inserting or deleting a pixel at the specified position specified by the random number value within the determined range.