摘要:
To provide an image forming apparatus (100) and a control program capable of stably removing carriers on a photoreceptor even in a case where the distance between the photoreceptor and a carrier collector (135) changes. An image forming apparatus (100) includes a photoreceptor drum (131), a developer (134), a transferor (160), a carrier collector (135), a carrier detector (136), and a controller (190). The developer (134) forms a toner image on the photoreceptor drum (131) using a two-component developing agent including toner and a carrier. The carrier collector (135) applies an electric field corresponding to a collecting bias to a carrier adhering to the photoreceptor drum (131) to collect the carrier by a force of the electric field. The carrier detector (136) detects a carrier remaining on the photoreceptor drum (131) after collecting the carrier by the carrier collector (135). The controller (190) has a carrier adhesion detecting mode, forcibly causes a carrier to adhere to the photoreceptor drum (131), and sets the collecting bias on the basis of the amount of carriers remaining on the photoreceptor drum (131) after collecting the carrier.
摘要:
The present invention relates to an image forming apparatus having cleaning means (2) which frictionally contacts magnetic particles on a magnet roller (4) with an image bearing member in order to remove foreign matters adhered to the image bearing member, thereby preventing the deterioration of the image quality. According to the present invention, by slowly rotating the magnet roller (4) so that a portion thereof opposed to the image bearing member is moved in the same direction as a moving direction of the image bearing member, thus preventing the toner from overflowing and scattering out of the cleaning means (2). Further, when the non-magnetic toner is used, by providing a toner cavity on the magnet roller (4), the scattering of the non-magnetic toner can be prevented, whereby the parts in the apparatus is prevented from being contaminated by the toner.
摘要:
An electrophotographic apparatus is provided with an electrically conductive voltage control bar (4) between the photoconductor drum or belt (1) and the developer or developer/cleaner roller (2). The voltage control bar prevents toner filming on roller (2), and makes it possible for that roller to be made of an insulating material such as molded plastics.
摘要:
The device includes a non-magnetic sleeve (4) for carrying the magnetic developer (2), a resin magnetic stationarily disposed in the sleeve, the magnet being of a mixture of a resin material and a magnetic material, and extending in the direction of a length of the sleeve. The magnet has first and second magnetic field generating portions. First (3) and second (8) magnetic members are disposed outside the sleeve (4) extending in the direction of the length of the sleeve. The first (3) and second (8) magnetic members are spaced apart from each other and are so disposed that a magnetic force applied to the magnet by a magnetic force between the first magnetic field generating portion and the first magnetic member reduces a resultant force to the magnet by gravity and by a magnetic force between the second magnetic field generating portion and the second magnetic member.
摘要:
Apparatus and method for simultaneously removing and transporting undersirable residual insulating toner particles (25) from a flexible imaging member (10) comprising in operative relationship, a cleaning roll means (12) containing on its surface insulating carrier particles (26), said cleaning roll being charged to a predetermined potential, a deflected flexible imaging member (10) means containing residual insulating toner particles (25) thereon, a cleaning zone (30) encompassed by and situated between said cleaning roll means (12) and said deflected flexible imaging member means (10), magnet means (14) contained in the cleaning roll means, and magnetic strips (15) contained in the outer periphery of said cleaning roll means.
摘要:
An electrophotographic apparatus which comprises an electrophotographic photosensitive member and a cleaning means, where the electrophotographic photosensitive member are provided with a surface layer having conductivity, and the cleaning means has conductivity where it touches the photosensitive member. The electrophotogtsphic apparatus is excellent in cleaning of residual toners.
摘要:
Tri-level highlight color imaging apparatus utilizing two-component developer materials in each of a plurality of developer housings. The triboelectric properties of the toners and carriers forming the two-component developers are such that inter-mixing of the components of each developer with the components in another developer housing is reduced.
摘要:
The present invention relates to an image forming apparatus having cleaning means (2) which frictionally contacts magnetic particles on a magnet roller (4) with an image bearing member in order to remove foreign matters adhered to the image bearing member, thereby preventing the deterioration of the image quality. According to the present invention, by slowly rotating the magnet roller (4) so that a portion thereof opposed to the image bearing member is moved in the same direction as a moving direction of the image bearing member, thus preventing the toner from overflowing and scattering out of the cleaning means (2). Further, when the non-magnetic toner is used, by providing a toner cavity on the magnet roller (4), the scattering of the non-magnetic toner can be prevented, whereby the parts in the apparatus is prevented from being contaminated by the toner.
摘要:
A toner cleaning apparatus using particulate clean ing material includes a particulate cleaning material re placement device with a receiving means (11) for receiving a container (20) of fresh cleaning material. The container is inverted by the device and material is metered onto a brush (2) in response to normal operation of the apparatus. Old material is automatically stripped off the brush by a skive (17) in the replacement process. New material cannot be added without removing old material, thereby preventing overloading of the brush.