摘要:
There is provided an image forming device capable of preventing smudges on the background of an image due to excess toner replenishment caused by a failure in stirring developer and toner enough to charge the toner or scattering of replenished toner without being charged. A toner conveying member for conveying replenished toner from a toner replenishing portion through a toner replenishing port to a developer stirring and conveying member is constructed by a screw member unitarily formed with the developer stirring and conveying member. The screw member has a spiral conveying fin capable of conveying the replenished toner at relatively high speed. The replenished toner is delivered to a toner replenishing portion provided in the upstream of a developer receiving portion of the screw member.
摘要:
A contact type image transferring system and method, incorporated in an image forming apparatus, for cleaning a residual toner on a transfer roller. The transfer roller is in contact with a photoconductive drum and forms a nip between the roller and the drum. A sheet of paper passes through the nip and a toner image on the drum is transferred to the sheet of paper. When the sheet of paper is not at the nip, not only a transfer voltage but also a charging voltage is applied at a same time. The polarities of the voltages applied to the charger and to the transfer roller cause the toner on the transfer roller to be removed.
摘要:
An image forming apparatus capable of collecting a toner remaining on an image carrier after image transfer and conveying the collected toner to a developing unit to reuse it. A toner supplement roller and a toner conveyor are so controlled as to maintain the supplement of a fresh toner from a hopper to the developing unit and the supplement of the collected toner from the toner conveyor to the developing unit in a ratio lying in a predetermined range.
摘要:
An image forming apparatus capable of collecting a toner remaining on an image carrier after image transfer and conveying the collected toner to a developing unit to reuse it. A toner supplement roller and a toner conveyor are so controlled as to maintain the supplement of a fresh toner from a hopper to the developing unit and the supplement of the collected toner from the toner conveyor to the developing unit in a ratio lying in a predetermined range.
摘要:
An image forming apparatus capable of collecting a toner remaining on an image carrier after image transfer and conveying the collected toner to a developing unit to reuse it. A toner supplement roller and a toner conveyor are so controlled as to maintain the supplement of a fresh toner from a hopper to the developing unit and the supplement of the collected toner from the toner conveyor to the developing unit in a ratio lying in a predetermined range.
摘要:
The present invention relates to compound LK6-A represented by the formula: ##STR1## which has immunosuppressive activity, and pharmaceutically acceptable salts thereof.
摘要:
UCN-1028A and UCN-1028C having an anti-tumor activity and a protein kinase C inhibitory activity are produced by culturing a microorganism belonging to the genus Cladosporium.
摘要:
Peptide which is obtained by treating fish meat such as sardine with an alkaline protease is adsorbed with a peptide-adsorbing resin (such as ODS resin) and eluted with 10 aqueous ethanol to obtain a peptide (Y-2 fraction). The resulting novel peptide has an excellent hypotensive action and can be used as a nutrient and a specific health food and, in addition, it can be advantageously used as a hypotensive agent.
摘要:
A contact type image transferring device and method incorporated in an image forming apparatus for cleaning a residual toner on a transfer roller. The transfer roller is in contact with a photoconductive drum at a first force and forms nip between the roller and the drum. A sheet of paper passes through the nip and a toner image on the drum is transferred to the sheet of paper. When the sheet of paper is not at the nip, the transfer roller is moved such that the force of the roller against the drum is a second force which is different from the first force. A cleaning bias voltage is applied to the roller and toner on the roller is transferred to the drum.
摘要:
The present invention relates to EI-1941 compounds having interleukin-1 production inhibitory activity which are represented by the formula: ##STR1## wherein either of R.sup.1 and R.sup.2 is hydrogen and the other is hydroxy, or R.sup.1 and R.sup.2 together represent oxygen; and R.sup.3 is hydroxy and R.sup.4 is hydrogen, or R.sup.3 and R.sup.4 together represent --0--.