Abstract: A heat roller of a fixing apparatus according to an embodiment of the invention has a slidable metal belt on an outer side of an elastic roller. The width of the metal belt is made larger than that of the elastic roller. Flanges, each of which regulates a sliding movement of the metal belt by being in contact with an edge of the metal belt, are provided on both sides of a press roller opposite the metal belt.

Abstract: An image formation apparatus is provided for supporting adjustment of the distance between a heat roller and a heating unit for heating the heat roller, thereby supporting adjustment of supplied power to the heating unit. The image formation apparatus includes a heat roller for clamping paper with a toner image formed thereon with a pressurization roller; a heating unit being placed facing the heat roller for heating the heat roller; a power supply unit for supplying power to the heating unit; an acquisition unit for acquiring a power value based on the power supplied from the power supply unit; a comparison unit for making a comparison between the power value acquired by the acquisition unit and a predetermined power value; and a display unit for displaying information concerning adjustment of a distance from the heat roller to the heating unit based on the comparison result of the comparison unit.

Abstract: When a main switch 11 is off, an electricity storage device 93 is charged with electric power of a commercial AC power supply 80 . When the main switch 11 is on and warming-up of a fixing unit 35 is necessary, a halogen heater 51 in a heating roller 41 is actuated by the electric power of the commercial AC power supply 80 and a halogen heater 52 in the heating roller 41 is actuated by discharge electric power of the electricity storage device 93.

Abstract: When a main switch 11 is off, an electricity storage device 93 is charged with electric power of a commercial AC power supply 80. When the main switch 11 is on and warming-up of a fixing unit 35 is necessary, a halogen heater 51 in a heating roller 41 is actuated by the electric power of the commercial AC power supply 80 and a halogen heater 52 in the heating roller 41 is actuated by discharge electric power of the electricity storage device 93.

Abstract: In a drive detection device for a fixing device according to an embodiment of the present invention, a non-paper passing area of a heat roller is formed by a surface where a metal conductive layer is exposed and a surface where a silicon rubber layer is exposed. The drive detection device has an infrared temperature sensor that detects the temperature of the non-paper passing area. When a detection result of the infrared temperature sensor is fluctuated a fixed amount or more in a predetermined time, the drive detection device determines that the heat roller is rotating. Otherwise, the drive detection device determines that the heat roller is not rotating.

Abstract: A heat roller of a fixing apparatus according to an embodiment of the invention has a slidable metal belt on an outer side of an elastic roller. The width of the metal belt is made larger than that of the elastic roller. Flanges, each of which regulates a sliding movement of the metal belt by being in contact with an edge of the metal belt, are provided on both sides of a press roller opposite the metal belt.

Abstract: A fixing device according to an embodiment of the present invention includes a microcomputer that exclusively performs temperature control for the fixing device. The microcomputer periodically calculates electric power that can be supplied to the fixing device. The microcomputer detects the temperature of the fixing device and the temperature in a printer unit and feedback-controls electric power supplied to the fixing device.

Abstract: An image formation apparatus is provided for supporting adjustment of the distance between a heat roller and a heating unit for heating the heat roller, thereby supporting adjustment of supplied power to the heating unit. The image formation apparatus includes a heat roller for clamping paper with a toner image formed thereon with a pressurization roller; a heating unit being placed facing the heat roller for heating the heat roller; a power supply unit for supplying power to the heating unit; an acquisition unit for acquiring a power value based on the power supplied from the power supply unit; a comparison unit for making a comparison between the power value acquired by the acquisition unit and a predetermined power value; and a display unit for displaying information concerning adjustment of a distance from the heat roller to the heating unit based on the comparison result of the comparison unit.

Abstract: In a fixing apparatus of an embodiment of the invention, a heat roller forwardly and reversely rotated by a drive motor capable of forwardly and reversely rotating is heated by an induction heating coil also when it is reversely rotated. Further, the roller control temperature of the heat roller by a control system is adjusted according to a time of forward rotation of the heat roller and a time of reverse rotation, or a time when the heat roller and a press roller are separated from each other and a time when they are in contact with each other. Besides, after a specified time has passed since an instruction of reverse rotation or forward rotation by a drive signal, output of the induction heating coil is tuned on.

Abstract: In a heat roller of a fixing apparatus according to an embodiment of the present invention, a sleeve is slidable with respect to a supporting roller. Flanges that regulate the sleeve have smooth surfaces, are arranged at gaps apart from a foamed rubber layer of the supporting roller, and freely rotate with respect to the supporting roller. Edges at both ends of the foamed rubber layer of the supporting roller are formed in an R shape and set shorter than the length of a body of the press roller. The sleeve has markings for detecting a state of the heat roller.

Abstract: A heat roller of a fixing apparatus according to an embodiment of the invention has a slidable metal belt on an outer side of an elastic roller. At the room temperature, the outer diameter of the elastic roller is smaller than the inner diameter of the metal belt. On the other hand, when the elastic roller is thermally expanded, the metal belt and the elastic roller fit onto each other in a state in which the metal belt fastens the elastic roller.

Abstract: A fixing apparatus according to an embodiment of the present invention controls, using a CPU and a temperature comparator, an inverter circuit that supplies electric power to an induction heating coil and performs temperature control for a heat roller. The CPU adjusts and controls a power value supplied by the inverter circuit. When the adjustment and control of the power value by the CPU is late, the inverter circuit is ON-OFF controlled by the temperature comparator.

Abstract: A fixing device according to an embodiment of the present invention heats a metal conductive layer of a heat roller using an induction current generating coil. In order to supplement a heat capacity of the heat roller, a press roller having a large heat capacity is heated by a halogen lamp. During a start of activation of an image forming apparatus, when a printer control circuit is started, the supply of electric power to the halogen lamp is started before warming-up is started.

Abstract: A controller for a shutter moved between an opened position and a closed position. A plurality of location ranges is defined between the opened position and the closed position. The controller detects the current moving speed of the shutter in each range, compares the moving speed with a predetermined reference speed, and generates a stop signal based on the comparison result to stop the movement of the drive mechanism.

Abstract: A controller for a shutter moved between an opened position and a closed position. A plurality of location ranges is defined between the opened position and the closed position. The controller detects the current moving speed of the shutter in each range, compares the moving speed with a predetermined reference speed, and generates a stop signal based on the comparison result to stop the movement of the drive mechanism.

Abstract: Iminodibenzyl derivatives of the formula: ##SPC1##Wherein R and R.sup.1 each represent hydrogen, halogen, amino, sulfamoyl, lower alkyl, lower alkoxy or lower alkanoyl, provided that R and R.sup.1 can not both be hydrogen and when R and R.sup.1 are the same, they are located at positions asymmetric to each other, are produced in high purity and yield by a series of reactions which proceed through novel 2,2'-dinitrostilbene or 2,2'-diaminostilbene and 2,2'-diaminodibenzyl derivatives. The reaction sequence involves condensation, reduction and ring-closure reactions to give asymmetric as well as symmetric iminodibenzyl derivatives. The resulting iminodibenzyl derivatives may be converted to useful pharmaceutical compounds having anti-depressant, analgesic or anti-allergic properties.

Abstract: A novel catalytic composition is described, useful for treating olefins or alcohols with carbon monoxide in the preparation of carboxylic acids comprising a solution containing copper carbonyl and a hydrated boron fluoride which optionally may contain a mineral acid such as sulfuric acid, phosphoric acid or hydrogen fluoride. The copper carbonyl functions as a co-catalyst for the hydrated boron trifluoride to enhance selectivity. The catalysts are especially suited for the preparation of neo acids.