| 摘要 |
A liquid image forming apparatus includes a rotation speed detection portion provided at one side of the image drying roller for detecting a rotation speed of said image drying roller. A speed comparison portion determines whether the image drying roller is rotating at normal speed by comparing the rotation speed of the image drying roller, detected by the rotation speed detection portion, with a predetermined range of a reference rotation speed. A controlling portion makes the heating roller heat the image drying roller to a reference temperature to vaporize the liquid carrier absorbed by the image drying roller, when it is determined from a signal from the speed comparison portion that the image drying roller does not maintain the regular speed. Thus, the toner image in a damp state, which is vulnerable to damage due to friction before being dried, can be protected and a quality printed material can be obtained.
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