摘要:
A developing device includes a developing sleeve for carrying a developer for developing an electrostatic latent image formed on an image bearing member, a magnet for carrying the developer on the sleeve, and a regulating member for regulating an amount of the developer carried on the sleeve. Magnetic poles of the magnet are disposed so that a circumferential direction component of a magnetic force acting on a magnetic carrier of the developer contacting at least a part of an upstream regulating surface of the regulating member with respect to the direction of rotation of the sleeve is opposite from the direction of the rotation.
摘要:
A developing device includes a developing sleeve for carrying a developer containing a magnetic carrier and a non magnetic toner; a magnet, provided in the sleeve and including a plurality of magnetic poles disposed along a circumferential direction of the sleeve, for carrying the developer on the sleeve; and a regulating member, provided opposed to the sleeve with a predetermined spacing in a region in which the magnetic poles different in polarity are adjacent to each other, for regulating an amount of the developer carried on the sleeve. The magnetic poles are disposed so that a circumferential direction component of a magnetic force acting on the magnetic carrier contacting at least a part of an upstream regulating surface of the regulating member with respect to the circumferential direction of rotation of the sleeve is opposite from the circumferential direction of the rotation.
摘要:
To receiving satellite broadcasting waves, it is provided an antenna comprising: a first element connected to a first feed point of a hot side; a ground element connected to a second feed point of a ground side; a second element; and a third element. The second element is arranged substantially in parallel with the first element so as to be coupled to the first element. The third element is arranged to define a predetermined angle with the first element, with a vertex of the predetermined angle set to a vicinity of the first feed point and the second feed point. The first element has a linear shape so as to have an inductive property at a resonance frequency. The third element has a linear shape so as to have a capacitive property at the resonance frequency. The third element is connected to a ground-side end portion of the second element.
摘要:
The specification discloses a developing device comprises a first developer bearing member configured to bear a developer including a toner and a carrier, and to convey the developer to a first developing region facing an image bearing member, so as to develop an electrostatic latent image formed onto the image bearing member and a second developer bearing member configured to bear a developer transferred from the first developer bearing member, and to develop an electrostatic latent image formed on the image bearing member, by conveying a developer to a second developing region facing the image bearing member and a cover unit configured to shield a route toward the image bearing member from a mutual gap position between the first developer bearing member and the second developer bearing member.
摘要:
A vehicular glass antenna which is provided in an upper blank space of defogging heater strips of a rear window glass of the vehicle, the vehicular glass antenna includes: an AM broadcast wave receiving antenna including; a plurality of horizontal strips arranged at intervals, at least two vertical strips which are orthogonal to the horizontal strips, and which are apart from each other, and an AM feed point located between the vertical strips, on uppermost one of the horizontal strips or through an extension line extending from a portion of the uppermost one of the horizontal strips, and two FM broadcast wave receiving antennas extending, respectively, from two FM feed points provided above the uppermost one of the horizontal strips of the AM broadcast wave receiving antenna on left and right sides of the AM feed point, along a part of an outermost portion of the AM broadcast wave receiving antenna, the FM broadcast wave receiving antennas extending, respectively, in opposite directions of a clockwise direction and a counterclockwise direction, one of the FM broadcast wave receiving antennas which has a substantially U-shape, and which surrounds all of ends of the plurality of the horizontal strips of the AM broadcast wave receiving antenna on one side, the other of the FM broadcast wave receiving antennas which has a substantially U-shape, and which surrounds a part of ends of the plurality of the horizontal strips on the other side, and each of the two FM broadcast wave receiving antennas including a second horizontal strip which is adjacent to the horizontal strips of the AM broadcast wave receiving antenna to achieve the capacitive coupling.
摘要:
An image forming apparatus includes a developing apparatus for developing an electrostatic image with a developer comprising at least a toner and a first external additive, the developing apparatus including a plurality of developing devices, containing toners different in color or lightness from each other, in which at least two developing devices contain a dark color toner and a light color toner which have an identical hue and different lightnesses and the developing device containing the light color toner is subjected to a developing operation prior to another developing device; a first transfer apparatus for sequentially transferring toner images, which have been developed by the plurality of developing devices, onto an intermediary transfer member; and a second transfer apparatus for transferring the toner images from the intermediary transfer member all together onto a transfer medium The first external additive includes particles having an aspect ratio of not less than 1.0 and not more than 1.5 and a number-average particle size of not less than 0.06 μm and not more than 0.3 μm, and has a coverage thereof with respect to the light color toner larger than that with respect to the dark color toner in a transferred state on the intermediary transfer member.
摘要:
The image forming apparatus has an electrophotographic photosensitive member and a developing device for using a developer including toner and carrier, wherein the developing device develops an electrostatic image on a photosensitive member by putting the developer forming a magnetic brush on a developer bearing member including magnetic field generation device inside in contact with the photosensitive member, and when a contact pressure of the developer on the developer bearing member against the photosensitive member is P (Pa), a circumferential velocity of the developer bearing member is VSl (mm/s), a circumferential velocity of the photosensitive member is VDr (mm/s), and an elastic deformation ratio of the photosensitive member is W (%), a degree of sliding of the photosensitive member by the developer represented ranges from 650 to 60500.
摘要:
A developing apparatus for developing an electrostatic image with light chromatic toner and dark chromatic toner which have the same hue, the developing device includes a light color developing device for accommodating a developer containing the light chromatic toner and carrier to develop the electrostatic image; a dark color developing device for accommodating a developer containing the dark chromatic toner and carrier to develop the electrostatic image; light color developer supply container accommodating a developer containing the light chromatic toner and the carrier to be supplied to the light color developing device; and dark color developer supply container accommodating a developer containing the dark chromatic toner and the carrier to be supplied to the dark color developing device, wherein the developer in the light chromatic toner supply container and the developer in the dark chromatic toner supply container have carrier weight ratios which are different from each other.
摘要:
A developing device includes a developer carrying member for carrying a developer; a first feeding portion for supplying the developer to the developer carrying member while feeding the developer along the developer carrying member; a second feeding portion, communicating with the first feeding portion at end portions thereof, for feeding the developer in a direction opposite to a developer feeding direction of the first feeding portion while collecting the developer from the developer carrying member; and a partition wall portion for partitioning the first and second feeding portions. The partition wall portion includes an opposing portion opposing the developer carrying member with a spacing. A surface roughness of at least the opposing portion is larger than that of the developer carrying member.
摘要:
There is provided an antenna for a vehicle which is formed on a space above defogging heater strips of a rear window glass of the vehicle. The antenna includes an AM broadcast wave receiving antenna including a plurality of horizontal strips provided at intervals, at least two vertical strips which are orthogonal to the horizontal strips, and which are apart from each other, and a first feed point provided between the two vertical strips, on uppermost one of the horizontal strips or through an extension line extending from a portion of the uppermost one of the horizontal strips; and an FM broadcast wave receiving antenna which extends in a clockwise direction or in a counterclockwise direction from a second feed point provided above the uppermost one of the horizontal strips of the AM broadcast wave receiving antenna, along a part of an outermost portion of the AM broadcast wave receiving antenna to surround the AM broadcast wave receiving antenna, and which is adjacent to at least a part of the horizontal strips of the AM broadcast wave receiving antenna to achieve a capacitive coupling.