Sheet wrinkling suppression image forming apparatus and method

A method for forming an image on a sheet, comprising:

• recognizing a type of the sheet;
• feeding a sheet from a sheet feeding section at a prescribed sheet feeding linear velocity;
• forming a toner image on a photo-conductive member;
• transferring the toner image onto the sheet;
• transporting the sheet downstream;
• fixing the toner image onto the sheet with heat and pressure rollers;
• and
• decreasing the sheet feeding linear velocity of the feeding section in accordance with the sheet type while maintaining linear velocities of the photo-conductive member, sheet transportation and heat and pressure rollers.

An image forming apparatus, comprising:

• means for feeding a sheet at a prescribed sheet feeding velocity;
• means for recognizing a sheet type selected by an operator;
• means for forming a toner image on a photo-conductive member;
• means for transferring the toner image from the photo-conductive member onto the sheet;
• means for transporting the sheet downstream;
• means for fixing the toner image to the sheet with heat and pressure rollers;
• and
• means for changing a sheet linear velocity of the feeding section in accordance with the sheet type while maintaining linear velocities of the photo-conductive member, sheet transportation and fixing means.