| 摘要 |
PROBLEM TO BE SOLVED: To provide a positioning structure of an image forming device, which ensures good printing accuracy without causing defective image quality such as color drift ascribable to distortion of a device main body frame due to external conditions. SOLUTION: A head frame 8 which holds ink heads 24 (24k, 24c, 24m, 24y) mounted thereon, is secured to the device main body frame 22 at three points of fixing portions 28a, 28b, 28c by making contact with the same via a narrow area of a washer-like contact portion 32 on a lower surface of the head frame. A pair of resist rollers 5a, 5b limiting a carrying direction of sheets are connected to the head frame 8 in one body while keeping parallelism with the ink heads 24. Then positioning pins 37a, 37b secured to and hanging from both lateral ends of the head frame 8 on an upstream side in a sheet carrying direction, are fitted into positioning holes 17a, 17b formed in respective platens 14 overhanging outward from both lateral ends of a belt platen 6 rising from below, and therefore the belt platen 6 is positioned to the head frame 8. COPYRIGHT: (C)2006,JPO&NCIPI
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