| US 7,546,077 B2 | ||
| Rotary roller structure employing interval maintenance members and fuser of image forming apparatus employing the same | ||
| Seock-deock Hong, Suwon-si (Korea, Republic of); and Kyung-shig Chung, Suwon-si (Korea, Republic of) | ||
| Assigned to Samsung Electronics Co., Ltd., Suwon-Si (Korea, Republic of) | ||
| Filed on Apr. 18, 2006, as Appl. No. 11/405,491. | ||
| Claims priority of application No. 10-2005-0056204 (KR), filed on Jun. 28, 2005. | ||
| Prior Publication US 2006/0291920 A1, Dec. 28, 2006 | ||
| Int. Cl. G03G 15/20 (2006.01) | ||
| U.S. Cl. 399—328 | 14 Claims |
| 1. A fuser of an electrophotographic image forming apparatus for fusing a toner image to a recording medium by applying heat
and pressure, the fuser comprising:
a first roller having a first end portion and a second end portion;
a second roller having a first end portion and a second end portion, the first and second rollers being elastically biased
against each other and rotating while contacting each other;
an elastic layer provided on at least one of the first and second rollers;
a heat source provided on at least one of the first and second rollers;
a gear coupled to a first end portion of at least one of the first and second rollers; and
first and second interval maintenance members respectively coupled to the second end portions of the first and second rollers,
the first and second interval maintenance members facing each other, the first and second interval maintenance members contacting
each other to prevent excessive compression of the elastic layer;
wherein the first interval maintenance member is coupled to the first roller such that a portion of the first interval maintenance
member having a maximum roundness error matches a portion of the first roller having a maximum roundness error.
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