| 摘要 |
PROBLEM TO BE SOLVED: To correct the skew of recording material conveyed through reversing and refeeding means by providing first skew correcting means at a paper refeeding conveying part of the reversing and refeeding means, and providing a second skew correcting means at a conveying part disposed near an image forming means. SOLUTION: A first skew correcting means is composed of prepregister rollers 73 and first loop forming rollers 72, and corrects the skew of recording material by positively forming a loop between the preregister rollers 73 and the first loop forming rollers 72 by upper and lower guides 781, 782 and making the recording material butt against the preregister roller 73. A second skew correcting means is composed of register rollers 56, and second loop forming rollers 55, and further positively corrects the skew by positively forming a loop by upper and lower guides 581, 582 and making the recording material butt against the register rollers 56. A rear face toner image is therefore formed in an accurate position on the recording paper to attain excellent double-side image formation. |
