Patent ID: 7809294
Filing Date: 2010-10-05
Classification: G03G

Abstract:
1. An image forming device comprising: a casing; an image forming arrangement provided in the casing and including a medium passage and a motor configured to drive in response to an image-forming signal or a warm-up signal; a supplying control unit configured to allow a recording medium to be supplied in the medium passage in response to the image-forming signal, and prevent a recording medium from being supplied in the medium passage in response to the warm-up signal; a temperature detecting unit configured to detect a temperature inside or around the casing; a warm-up control unit configured to control the motor to drive at a first speed in response to the warm-up signal if a temperature detected by the temperature detecting unit is equal to or higher than a first temperature, and to drive at a second speed lower than the first speed in response to the warm-up signal if a temperature detected by the temperature detecting unit is lower than the first temperature; and an image forming control unit configured to control the motor to drive at a third speed in response to the image-forming signal if a temperature detected by the temperature detecting unit is equal to or higher than a second temperature, and to drive the motor at a fourth speed lower than the third speed in response to the image-forming signal if a temperature detected by the temperature detecting unit is lower than the second temperature, the first speed being equal to or different from the third speed, the second speed being equal to or different from the fourth speed, and the first temperature being equal to or different from the second temperature, wherein a temperature of the toner changes based on a first heat-up characteristic and a temperature inside or around the casing changes based on a second heat-up characteristic, the second temperature is set based on a difference between the first heat-up characteristic and the second heat-up characteristic.