초록 ▼

A wideband radio transceiver system that features a wideband RF section and a flexible and scalable baseband signal processing section. The transceiver system architecture has configurable baseband processing to process signals for multiple communication protocol standards, or multiple instances of

A wideband radio transceiver system that features a wideband RF section and a flexible and scalable baseband signal processing section. The transceiver system architecture has configurable baseband processing to process signals for multiple communication protocol standards, or multiple instances of the same communication protocol standard, that operate over the same frequency band. Optional additional features include a transmit carrier suppressor and transmit interference canceller to suppress the effects of a transmit signal on receive signal processing when signals are being transmitted and received simultaneously.

대표청구항 ▼

A wideband radio transceiver system that features a wideband RF section and a flexible and scalable baseband signal processing section. The transceiver system architecture has configurable baseband processing to process signals for multiple communication protocol standards, or multiple instances of

A wideband radio transceiver system that features a wideband RF section and a flexible and scalable baseband signal processing section. The transceiver system architecture has configurable baseband processing to process signals for multiple communication protocol standards, or multiple instances of the same communication protocol standard, that operate over the same frequency band. Optional additional features include a transmit carrier suppressor and transmit interference canceller to suppress the effects of a transmit signal on receive signal processing when signals are being transmitted and received simultaneously. y support the toner without electrostatically effecting the toner, so that the development of a latent image is free from the influence of the static electricity of the toner support member. This successfully enhances image quality. A photoconductive element has a coefficient of friction μ confined in the range of 0.1<μ<0.4, preventing the toner from depositing on and contaminating the background area of the element. In addition, the surface of the photoconductive element is protected and has its service life extended. Further, the toner support member has a hardness HS lying in the range of 10°≤HS≤45°, as measured by JIS (Japanese Industrial Standards) A scale, achieving a smooth surface and thereby insuring a uniform developing characteristic. An image forming apparatus including the developing device is also disclosed. ction speed regardless of a sheet transport speed of said sheet ejection transporting means. 7. An image forming apparatus comprising: an image forming section; a sheet supply transport section for transporting a sheet to said image forming section; sheet supply transporting means for transporting sheets in said sheet supply transport section; and speed control means for controlling a sheet transport speed of said sheet supply transporting means, wherein said speed control means controls said sheet supply transporting means so that the sheet transport speed of at least one of the last sheet and the first sheet of sequential sheets on which images are formed is higher than the sheet transport speed of another sheet of said sequential sheet. 8. An image forming apparatus comprising: feed rollers for transporting sheets; a photoconductive drum on which an electrostatic latent image is formed, wherein said electrostatic latent image is developed into a visible image and transferred to a sheet transported by said feed rollers; an ejection roller for ejecting the sheets on which the visible images on said photoconductive drum are transferred; and a control unit for controlling the sheet transport speed of said feed rollers so that the sheet transport speed of at least one of the first sheet and the last sheet of sequential sheets is higher than the transport speed of another sheet of said sequential sheet. 9. An image forming means according to claim 8, wherein said control unit controls the sheet transport speed of said feed rollers so that the sheet transport speed of at least one of the first sheet and the last sheet of sequential sheets transferred by said feed rollers is higher than the sheet transport speed during transference of the visible image at said photoconductive drum. 10. An image forming apparatus according to claim 8 or claim 9, wherein said feed rollers are driven by a stepping motor, and said control unit controls the sheet transport speed of said feed rollers by controlling said stepping motor. 11. An image forming apparatus comprising: first feed rollers for transporting sheets; a photoconductive drum on which an electrostatic latent image is formed, wherein said electrostatic latent image is developed into a visible image and transferred to a sheet transported by said first feed rollers; second feed roller for transporting the sheets on which the visible images on said photoconductive drum are transferred; ejection roller for ejecting the sheets transported by said second feed roller; and control unit for controlling the sheet transport speed of said second feed rollers so that the sheet transport speed of at least one of the first sheet and the last sheet of sequential sheets transferred by said second feed roller is higher than the transport speed of another sheet of said sequential sheet. 12. An image forming means according to claim 11, wherein said control unit controls the sheet transport speed of said second feed roller so that the sheet transport speed of at least one of the first sheet and the last sheet of sequential sheets transferred by said second feed roller is higher than the sheet transport speed during transference of the visible image at said photoconductive drum. 13. An image forming apparatus according to one of claim 11 or claim 12, wherein said second feed roller is driven by a stepping motor, and said control unit controls the sheet transport speed of said second feed roller by controlling said stepping motor. 14. An image forming apparatus comprising: feed rollers for transporting sheets; a photoconductive drum on which an electrostatic latent image is formed, wherein said electrostatic latent image is developed into a visible image and transferred to a sheet transported by said feed rollers; ejection roller for ejecting the sheets on which the visible images on said photoconductive drum are transferred; and control unit for controlling the sheet transport speed of said feed rollers so that said feed rollers transport at least one of the first sheet and the last sheet of sequential sheets at a first speed, and said feed rollers transport another sheet of said sequential sheet at a second speed, wherein said first speed is higher than said second speed. 15. An image forming means according to claim 14, wherein said first speed is higher than the sheet transport speed during transference of the visible image at said photoconductive drum. 16. An image forming apparatus according to claim 14 or claim 15, wherein said feed rollers are driven by a stepping motor, and said control unit controls the sheet transport speed of said feed rollers by controlling said stepping motor. 17. An image forming apparatus comprising: first feed rollers for transporting sheets; a photoconductive drum on which an electrostatic latent image is formed, wherein said electrostatic latent image is developed into a visible image and transferred to a sheet transported by said first feed rollers; second feed roller for transporting the sheets on which the visible images on said photoconductive drum are transferred; ejection roller for ejecting the sheets transported by said second feed roller; and control unit for controlling the sheet transport speed of said second feed rollers so that said second feed roller transports at least one of the first sheet and the last sheet of sequential sheets at a first speed, and said second feed roller transports another sheet of said sequential sheet at a second speed, wherein said first speed is higher than said second speed. 18. An image forming means according to claim 17, wherein said first speed is higher than the sheet transport speed during transference of the visible image at said photoconductive drum. 19. An image forming apparatus according to one of claim 17 or claim 18, wherein said second feed roller is driven by a stepping motor, and said control unit controls the sheet transport speed of said second feed roller by controlling said stepping motor. old the sheet double, and then, further controls the second folding device so as to eject the sheet after further folding the sheet in three when the selector selects the three-folding mode. . A developing device according to claim 6, wherein: the plurality of fin-like portions of said sheet-like member have different pitches. 9. A developing device according to claim 1, wherein: in one of the plurality of fin-like portions of said sheet-like member which is located at an outmost position in said first direction, said first free length is almost equal to said second free length. 10. A developing device according to claim 1, wherein: said sheet-like member of said agitating member is fixed, in a horizontal state, to said agitating member above a line segment in the vertical direction, the line segment joining said rotational center of said developing roller and said rotational center of said agitating member. 11. An image forming method comprising steps of: forming a latent image on an image bearing member; and selectively supplying toner to the latent image formed on said image bearing member to develop the latent image, using a developing device having a housing having a wall surface extended in a first direction parallel with the direction of a rotational axis of the image bearing member and having a cylinder or part thereof having its radius defined in a direction orthogonal with the first direction, the housing holding the developer supplied to the latent image formed on the image bearing member, a developing roller located below the rotational axis of the image bearing member in a vertical direction, having a rotational center parallel with said first direction, and formed so as to rotate around the rotational center, and an agitating member having a rotational center extended in said first direction and rotated within said housing along said wall surface, said agitating member having a sheet-like member with a plurality of fin-like portions arranged therein and which are polygons each having a first free length extending from said rotational center in a circumferential direction toward the wall surface of said housing and a second free length that is longer than said first free length, each of the fin-like portions having an opening formed in a section thereof, the agitating member conveying said developer to said developing roller and dispersing the developer in said first direction for agitation when said sheet-like member is rotated along an inner wall of said housing, wherein in each of the fin-like portions of said sheet-like member, the side of said first free length is arranged outward with respect to said first direction. 12. An image forming method according to claim 11, wherein: said rotational center of said agitating member of said developing device is located below said rotational center of said developing roller in a vertical direction. 13. An image forming method according to claim 11, wherein: said first free length of the plurality of fin-like portions of said sheet-like member of said developing device is slightly larger than an inner diameter of the housing corresponding to a distance between the rotational center and the wall surface of said housing. 14. An image forming method according to claim 11, wherein: said sheet-like member of said agitating member of said developing device is fixed, in a horizontal state, to said agitating member above a line segment in the vertical direction, the line segment joining said rotational center of said developing roller and said rotational center of said agitating member. 15. An image forming apparatus comprising: a developing device including: a photosensitive body on which a latent image corresponding to image information to be output is formed; a developing magnet having N and S poles alternately arranged inside, the developing magnet being rotated; a sleeve formed so as to rotate around an outer periphery of the developing magnet to supply an image bearing member with toner to be supplied to the latent image formed on the photosensitive body; a toner hopper constituting part of said housing, provided b