Abstract: In this toner concentration sensor, as the magnetic permeability of a two-component developer 3 containing toner and carrier in a two-component developing unit 1 has changed with changing TC ratio of the two-component developer, the oscillation frequency of a first oscillation circuit 20 having a detection coil 5 changes, on the other hand the oscillation frequency of a second oscillation circuit 30 having a reference coil 6 does not change. While, changes in temperature conditions cause the oscillation frequency of the second oscillation circuit to change in the same way as the oscillation frequency of the first oscillation circuit. Therefore, utilizing a difference between the oscillation frequencies of the first and second oscillation circuits makes it possible to cancel out changes in the temperature conditions so that a value corresponding to only the magnetic permeability of the two-component developer can be obtained.

Abstract: In an image formation state, to cool a recording sheet on a route from a fixer to a paper ejection roller, a blast fan assumes a first position restrained by a first fixture. Also, in another state, to cool a recording sheet on the catch tray, the blast fan assumes a second position restrained by a second fixture. To transition from the image formation state to another state, the blast fan sends a strong blast in a reverse direction from the normal blast direction. A bias is generated on the blast fan due to the resulting reactive force, the blast fan becomes free from the restraint of the first fixture, and shifts from the first position to the second position. Conversely, to transition from another state to the image formation state, a strong blast is sent in the same direction as the normal blast direction, and the blast fan shifts from the second position to the first position.

Abstract: An image forming device that uses only one temperature sensor to detect temperatures of the recording sheet and a rotation member for fixing, and can perform the temperature adjustment control carefully in detail during the image forming operation. The CPU 61 performs the temperature adjustment control 1 by executing the temperature adjustment program 64b (step S109), then executes the paper passing judgment program 64a to judge whether or not paper is passing (step S110). As far as it judges that no paper is passing (NO in step S110), the CPU 61 continues to perform the temperature adjustment control 1 by executing the temperature adjustment program 64b. When it judges that paper is passing (YES in step S110), the CPU 61 performs the temperature adjustment control (step S112).

Abstract: An apparatus and a method are provided that can easily distribute material suitable for each person or each place to which the material is distributed compared to conventional apparatuses and methods. A material delivery server is provided with a box for each user, a print data sorting portion for making the box for a user to whom material is delivered memorize print data of the material to be delivered, a print conditions memorizing portion for memorizing print conditions information for each user, a transmission data generation portion for generating print data for transmission by setting the print conditions information of a user relating to the box for the print data memorized in the box, and a print data transmission portion for transmitting the print data generated from the print data memorized in the box to a material reception terminal of the user relating to the box.

Abstract: A recycle information system for recycling reusable parts from machines and equipment such as image forming apparatus, and reutilize the recovered member as a manufacturing material. A recycle information system utilizing a production control computer to manage information on production parts being used or scheduled for use in manufacturing and maintenance services, is linked by a communications line with a control device for machines and equipment scheduled for recycling, monitors information on parts of machines and equipment capable of recycling, and when a machine is recovered from a user, compares production part information stored in the production control computer with recovered part information stored in the recovered device, and acquires information on whether individual parts used in the recovered machine are capable of being recycled, and information on a factory destination address.

Abstract: A recycle information system for recycling reusable parts from machines and equipment such as image forming apparatus, and reutilize the recovered member as a manufacturing material. A recycle information system utilizing a production control computer to manage information on production parts being used or scheduled for use in manufacturing and maintenance services, is linked by a communications line with a control device for machines and equipment scheduled for recycling, monitors information on parts of machines and equipment capable of recycling, and when a machine is recovered from a user, compares production part information stored in the production control computer with recovered part information stored in the recovered device, and acquires information on whether individual parts used in the recovered machine are capable of being recycled, and information on a factory destination address.

Abstract: The object of the present invention is to provide an inductive thermal fusing device that is reduced in size and weight based on a smaller closed magnetic circuit iron core. In order to attain this object, the present invention comprises a closed magnetic circuit iron core that forms a closed magnetic circuit, an inductive coil 14 that is wound such that it is linked to the closed magnetic circuit iron core and generates a magnetic flux that causes an inductive current that flows around the circumference of the conductive member, a power supply 50 that provides AC voltage to the inductive coil 14, a voltage detection means 7 that detects the voltage of the power supply 50, and a frequency changing means (first through fourth SSRs 51 through 54 and a CPU 5) that changes the frequency of the AC voltage applied to the coil 14 based on the detected voltage.

Abstract: The present invention has an object to provide an induction-heating fusion device which is capable of stabilizing the fusing temperature over the entire width of a sheet therethrough by inhibiting an excessive temperature rise in a sheet-nonpassing zone defined when a small-size sheet is subjected to fusion. The induction-heating fusion device according to the present invention includes an iron core 17 forming a closed magnetic circuit, a main induction coil 14a wound around the iron core 17 for generating a magnetic flux which causes an electrically conductive member to generate an induction current circumferentially thereof, and at least one induction sub-coil 14b provided on an end portion of the main coil for generating a magnetic flux which causes the electrically conductive member to generate an induction current circumferentially thereof.

Abstract: A drive unit for a vertical blind having a housing with a louver traverse drive shaft with a loop string wound therearound, a louver tilt drive shaft with a loop chain wound therearound, a louver open detection means with a slider and a switch to be turned on and off by the slider, and a control means for rotating the louver traverse drive shaft once a neutral position of the louvers is detected.

Abstract: To avoid entanglement when a vertical blind is opened and closed, an attachment member is secured to a lead carrier and engages with an operation shaft. The attachment member is composed of a body having a length half the width of the lead carrier, and a snap detent projects from one end of the body. The body is formed by cutting an upper part of a horizontal cylindrical member and opening outwardly the cut edges of the body. The attachment member is attached to the operation shaft from the underside in an oblique direction such that the body engages with the lower part of the operation shaft and the snap detent snap engages with the upper part of a short jaw. Even when rotary moment is applied to the lead carrier, the attachment member holding the operation shaft counteracts the rotary moment, thereby preventing the lead carrier from rotating.