Patent application number | Description | Published |
20090315938 | RECORDING MEDIUM CONVEYING DEVICE - An apparatus includes a belt that attracts a recording medium using electrostatic force, and a power source that applies voltage to the belt. The apparatus further includes a voltage controller that controls the voltage applied to a charging portion of the belt, and a recording controller that transmits recording medium information on the recording medium to the voltage controller. The voltage controller changes a value of voltage applied to the charging portion, according to the recording medium information transmitted from the recording controller. | 12-24-2009 |
20110200343 | IMAGE FORMING APPARATUS - An image forming apparatus includes a rotatable belt; an image forming station for forming an image on a belt or on a recording material carried on a belt in a region opposing the belt; a first detector, provided in one of upstream and downstream sides of the region with respect to a rotational direction of the belt, for detecting a position of the belt with respect to a widthwise direction; a second detector, provided in the other of upstream and downstream sides of the region with respect to a rotational direction of the belt, for detecting a moving direction in the region; a steering roller, disposed in the one side with respect to the rotational direction, for correcting a position of the belt with respect to the widthwise direction by inclining; a first controller for controlling an inclination of the steering roller on the basis of an output of the first detector; an adjusting roller, provided in the other of the sides with respect to the rotational direction, for adjusting the moving direction in the region; and a second controller for controlling an operation of the adjusting roller on the basis of an output of the second detector. | 08-18-2011 |
20110206392 | IMAGE FORMING APPARATUS - An image forming apparatus includes a rotatable belt member; an image forming station for forming an image on the belt member or a recording material carried on the belt member in a region opposing the belt member; first detecting means for detecting a position of the belt member with respect to a widthwise direction of the belt member; a first steering roller for correcting the position of the belt member with respect to the widthwise direction by inclination; first controller for controlling an inclination of first steering roller on the basis of an output of the first detecting means; second detecting means for detecting the position of the belt member; a second steering roller for correcting the position of the belt member with respect to the widthwise direction by inclination; calculating means for calculating such an amount of inclination of the second steering roller that a movement distance of the belt member is not more than a predetermined value in a state that an inclination of first steering roller is set to a predetermined value; and second controller for controlling the inclination of the second steering roller in accordance with an output of the second detecting means with the amount of inclination calculated by the calculating means being a median value. | 08-25-2011 |
20110217090 | IMAGE FORMING APPARATUS - An image forming apparatus includes an image bearing member; a rotatable belt member for carrying a toner image transferred from the image bearing member or for carrying a recording material carrying a toner image transferred from the image bearing member; a rotatable supporting roller for stretching the belt member; a steering roller for stretching the belt member and for moving the belt member in a widthwise direction by inclining operation; detecting means for detecting a position of the belt member with respect to the widthwise direction; first control means, responsive to an output of the detecting means, for controlling an amount inclining operation of the steering roller to control a force of moving the belt member in the widthwise direction; and second control means, responsive to an output of the detecting means, for controlling an amount inclining operation of the steering roller to displacing the belt member in the widthwise direction. | 09-08-2011 |
20120148299 | IMAGE FORMING APPARATUS - An image forming apparatus includes a belt member; a first drum for bearing a toner image to be transferred onto the belt member; a second drum, provided downstream of the first drum with respect to a rotational direction of the belt member, for bearing a toner image to be transferred onto the belt member; a first steering portion, provided upstream of the first drum with respect to the rotational direction of the belt member, for controlling a widthwise position of the belt member; and a second steering portion, provided downstream of the second drum with respect to the rotational direction of the belt member, for controlling the widthwise position of the belt member with a delay of a movement time of the belt member from the first drum to the second drum. | 06-14-2012 |
20120268515 | RECORDING MEDIUM CONVEYING DEVICE - An apparatus includes a belt that attracts a recording medium using electrostatic force, and a power source that applies voltage to the belt. The apparatus further includes a voltage controller that controls the voltage applied to a charging portion of the belt, and a recording controller that transmits recording medium information on the recording medium to the voltage controller. The voltage controller changes a value of voltage applied to the charging portion, according to the recording medium information transmitted from the recording controller. | 10-25-2012 |
20140193170 | FIXING DEVICE AND IMAGE FORMING APPARATUS INCLUDING THE SAME - A fixing film is formed by stacking a heating layer, an electrical conducting layer, and an insulation layer interposed between the heating layer and the electrical conducting layer. A current supplied from a secondary coil flows through stacked layers formed by the secondary coil, the heating layer, an electrical conducting member, and the electrical conducting layer. The electrical conducting member and electrical conducting layer function as a current return path. | 07-10-2014 |