Abstract: A developing device includes a developer bearing member and a developer container for containing a developer therein. The developer container has a plurality of developer containing rooms (chambers) provided with developer conveyers for conveying the developer toward the developer bearing member. The rotational speed of the developer conveyor in the room nearest to the developer bearing member is higher than that of the developer conveyers in the other rooms, or the volume of the room nearest to the developer bearing member is smaller than that of the other rooms, or the thickness of the developer conveyer in the room nearest to the developer bearing member is smaller than that of the developer conveyers in the other rooms, or the Young's modulus of the developer conveyor in the room nearest to the developer bearing member is smaller than that of the developer conveyers in the other rooms.

Abstract: An editing system for editing a plurality of clips recorded on a random-accessible recording medium includes a clip processing device having a plurality of clip processing layers to execute a predetermined process for the clips, and a hierarchy decision device having a plurality of objects corresponding to the clip processing layers. The hierarchy decision device serves to decide the hierarchy of each clip processing layer by a hierarchical structure which is formed by connecting the objects mutually. The clip processing device performs time management of each clip processing layer. Any processed clip obtained from a first clip processing layer is further processed by a second clip processing layer which is hierarchically above the first clip processing layer. The processed clip obtained from a hierarchically uppermost clip processing layer is outputted as a fat clip.

Abstract: A developing device including a housing, a developer bearing member rotatably provided in an opening portion of the housing, a developer containing chamber, and a developer supplying and removing member being in contact with the developer bearing member, and having the function of supplying a developer in the developer containing chamber to the developer bearing member and the function of removing the developer from the developer bearing member, wherein the developer bearing member is disposed above the developer containing chamber, and the developer supplying and removing member has the function of upwardly carrying the developer in the developer containing chamber.

Abstract: The developing apparatus has a housing, a developer bearing member rotatably provided at an opening of the housing, a developer containing room, a carrying member for carrying developer from the developer containing room toward the developer bearing member, and a developer accumulating portion provided proximate to the developer bearing member and adapted to accumulate the developer carried by the carrying member. In the developing apparatus, the developer accumulating portion is provided above a rotational center of the carrying member.

Abstract: An image forming apparatus includes an image bearing member; a charging member for electrically charging the image bearing member; developing means for developing with a developer an electrostatic latent image formed on the image bearing member, the developing means having a developer carrying member for carrying the developer, wherein a gap is formed between the developer carrying member and the image bearing member; bias voltage applying means for applying a bias voltage to the developer carrying member, wherein the bias applying means applies an AC bias when the electrostatic latent image is developed, wherein the developing means is capable of collecting the developer fro the image bearing member, and an amplitude of an AC bias voltage applied to the developer carrying member by the bias applying means when the the developer is collected, is larger than that when the the electrostatic latent image is developed.

Abstract: The image forming apparatus includes a movable image bearing member, a charging member opposed to the image bearing member in a charging portion, a transfer member for transferring an image formed on the image bearing member to a transferred member, and a cleaning mode for applying a voltage to the transfer member, and when other area on the image bearing member differing from a surface potential changing area on the image bearing member which is changed in surface potential by the application of this voltage is located in the charging portion, applying a voltage to the charging member, thereby cleaning the transfer member and the charging member. Thereby, the cleaning of the charging member can be effected well.

Abstract: An image forming apparatus includes a process cartridge detachably mountable with respect to the main body of the apparatus. The process cartridge is provided with an image bearing member, a charger for charging the image bearing member, a power supply for applying an alternating current voltage to the charger, and a controller for variably controlling the alternating current supplied from the power supply to the charger in conformity with information about the use situation of the process cartridge. The process cartridge can also include an image bearing member, a charger for charging the image bearing member, the charger permitting an alternating current voltage to be applied thereto by a power supply, and a memory for storing therein information about the use situation of the process cartridge, and information of a plurality of preset control values for an alternating current supplied from the power supply to the charger to be variably controlled in conformity with the information.

Abstract: An image forming apparatus has an image forming device for forming an image on a recording material, a storing device for storing a parameter regarding an accumulation operation amount of the image forming apparatus, and a changing device for changing an image forming condition of the image forming device in accordance with the parameter.

Abstract: A developing device including a housing, a developer bearing member rotatably provided in the opening portion of the housing, a developer containing chamber, and a developer supplying and removing member being in contact with the developer bearing member, and having the function of supplying a developer in the developer containing chamber to the developer bearing member and the function of removing the developer from the developer bearing member, wherein the developer bearing member is disposed above the developer containing chamber, and the developer supplying and removing member has the function of upwardly carrying the developer in the developer containing chamber.

Abstract: The developing apparatus has a housing, a developer bearing member rotatably provided at an opening of the housing, a developer containing room, a carrying member for carrying the developer in the developer containing room toward the developer bearing member, and a developer accumulating portion arranged near the developer bearing member and adapted to accumulate the developer carried by the carrying member. In the developing apparatus, the developer accumulating portion is provided above a rotational center of the carrying member.

Abstract: A method of producing a polyoxyalkylene polymer having at least one crosslinkable silyl group and at least one hydroxyl group in each molecule which comprises treating a polyoxyalkylene polymer having at least one unsaturated group and at least one alcoholic hydroxyl group in each molecule and an impurity double metal cyanide complex as mixed therein with a metal-coordinating compound and adding a compound having a hydrogen-silicon bond and a crosslinkable silyl group in each molecule and a hydrosilylation catalyst to thereby carry out the hydrosilylation reaction.

Abstract: A circulation fan apparatus including a hermetic vessel 1 containing a corrosive process gas therein, and a circulation fan 2 installed in the hermetic vessel, rotors 2-1, 2-2 of the circulation fan are rotatably supported by bearings, wherein the bearings comprises control-type radial magnetic bearings 4, 5 and at least control-type axial magnetic bearing 6, 7, displacement sensor targets 4-1, 5-1, 6-1, and 7-1 and rotor-side magnetic poles 4-2, 5-2, 6-2, and 7-2 of radial magnetic bearings 4 and 5 and axial magnetic bearings 6 and 7 are fixed to the rotors 2-1 and 2-2 of the circulation fan 2 and are disposed in the hermetic space communicating with the hermetic vessel, and displacement sensors 4-3, 5-3, 6-3, and 7-3 and stator-side magnetic poles 4-4, 5-4, 6-4, and 7-4 opposing the displacement sensor targets and rotor-side magnetic poles are disposed outside of the hermetic vessel with cans 14, 15, 17, and 18 interposed therebetween, whereby even when the circulation fan 2 is rotated at a high speed and u

Abstract: An image forming apparatus is disclosed in which an electrophotographic photosensitive member is rotated at a peripheral speed of 150 mm/second or more and a specific toner is used. The toner has a weight-average particle diameter from 5 to 12 &mgr;m, and of the toner having a circle-equivalent diameter of 3 &mgr;m or more, particles with a circularity of 0.900 or more are present at a rate of 90% or more in a number-based cumulative valve. The toner also satisfies one of two sets of conditions which are defined by the relationship between a cut rate and a weight-average particle diameter and the relationship between a number-based cumulative valve and a wight-average particle diameter.

Abstract: A developing device includes a developer bearing member and a developer container for containing a developer therein. The developer container has a plurality of developer containing rooms (chambers) provided with developer conveyers for conveying the developer toward the developer bearing member. The rotational speed of the developer conveyor in the room nearest to the developer bearing member is higher than that of the developer conveyers in the other rooms, or the volume of the room nearest to the developer bearing member is smaller than that of the other rooms, or the thickness of the developer conveyer in the room nearest to the developer bearing member is smaller than that of the developer conveyers in the other rooms, or the Young's modulus of the developer conveyor in the room nearest to the developer bearing member is smaller than that of the developer conveyers in the other rooms.

Abstract: This specification discloses an image forming apparatus comprising a process cartridge detachably mountable with respect to the main body of the apparatus, the process cartridge being provided with an image bearing member and charging means for charging the image bearing member, a power supply for applying an alternating current voltage to the charging means, and control means for variably controlling an alternating current supplied from the power supply to the charging means in conformity with information about the use situation of the process cartridge. The specification also discloses a process cartridge detachably mountable with respect to the main body of the image forming apparatus.

Abstract: The present invention provides an image forming apparatus having an image forming device for forming an image on a recording material, a storing device for storing a parameter regarding an accumulation operation amount of the image forming apparatus, and a changing device for changing an image forming condition of the image forming device in accordance with the parameter.

Abstract: A method of producing a polyoxyalkylene polymer having at least one crosslinkable silyl group and at least one hydroxyl group in each molecule

Abstract: A digital recording/reproduction method and apparatus includes a data detection circuit for detecting a frequency of occurrence of a specific data value contained in an information signal, and a phase controller for controlling a phase of a sampling clock based on the frequency of occurrence of the specific data value detected by the data detection circuit. A threshold value in the data detection circuit is adjusted to maximize the frequency of occurrence of the specific data value contained in the information signal, and the phase of the sampling clock is controlled to minimize the amount of change in the frequency of occurrence of the specific data value contained in the information signal.

Abstract: A variety of special effect processing is performed on video frames retrieved from a disk device 30 in effect processing stages ES1, ES2, and so on. A work memory 112B is always interposed between processing at one stage and processing at the next stage. Further, a plurality of processing are performed in parallel at one effect processing stage. Frames having all of effect processing completed are stored in an input/output buffer 115 in no special order through layering processing ESL. The plurality of edited frames stored in the input/output buffer 115 are output in synchronization with an output clock (not shown) in realtime.

Abstract: A vacuum exhaust system can improve the operating efficiency of the vacuum exhaust system while reducing the system cost, to quickly attain a vacuum in the auxiliary chambers without increasing the size of the vacuum pumps. The vacuum exhaust system comprises a first pumping section and a second pumping section disposed downstream of and in series with the first pumping section. A main exhaust passage is provided to communicate a main chamber with a suction port of the first pumping section, and an auxiliary exhaust passage is provided to communicate an auxiliary chamber with a suction port of the second pumping section.