Abstract: In an image forming apparatus including an image carrier, a developing device which uses a developer including a toner and a carrier and to develop the electrostatic latent image and forms a visible toner image, plural toner supplying devices each of which supplies the toner in which mass ratio of an additive against the toner is different, and a control section which controls a ratio of a toner supplying amount to be supplied from each of the plural toner supplying devices, under a condition that toner consumption per a single print is low, the control section is configured to increase the toner supplying ratio of the toner including a high ratio of the additive, and under a condition that the toner consumption per the single print is high, the control section is configured to decrease the toner supplying ratio of the toner including a high ratio of the additive.

Abstract: A developing device, includes a developer agitating member, an upstream side developing miler, and a downstream side developing roller; wherein the toner in the developer handed over from the upstream side developing roller to the downstream side developing roller has a volume average particle size larger than a volume average particle size of the toner in the developer conveyed by the upstream side developing roller to the facing position between the upstream side developing roller and the photoreceptor.

Abstract: Provided is a developing device which can prevent the occurrence of a phenomenon of an excessive increase of a developer quantity in a developer standby space, thereby acquiring a stable image. The developing device comprises a developer agitation-transfer unit, a developer roller, a developer feeding roller, a developer guide member and a space forming member. The developing device is characterized in that the developer feeding roller rotates to transfer the developer transferred by the agitation-transfer means, upward from the clearance between the developer feeding roller and the developer guide member, and in that, when the developer standby space formed in the device is filled with the developer transferred by the developer feeding roller, the developer feeding roller is rotated to carry the developer, which overflows from the developer standby space, and to move the same in the direction away from the developer roller, so that the developer is once discharged from the developer standby space.

Abstract: The present invention realizes an image forming apparatus which is equipped with a carrier recovery section of simple configuration and for which maintenance is not required, the apparatus includes: a photoconductive drum; a developing device to develop a latent image formed on the photoconductive drum by a two-component developer containing a toner and a magnetic carrier, and a carrier recovery section which is equipped with a recovery roller, wherein the carrier recovery roller includes a rotatable sleeve, and a magnet roller that is installed inside the sleeve and provided with a plurality of fixed magnetic poles including a main pole to recover the magnetic carrier adhered onto the photoconductive drum and a separating pole to separate the magnetic carrier from the recovery roller, wherein a separating member is disposed at such a position that is opposite to the sleeve at a prescribed distance in a non-contact state.

Abstract: A carrier removing apparatus, including: an electrode, having a plurality of openings through which a carrier passes, disposed to oppose an image carrier, and a power source to apply a voltage onto the electrode so as to separate the carrier on the image carrier from the image carrier, wherein the electrode has a surface along a surface of the image carrier.

Abstract: A herbicide composition for paddy field characterized by containing (a) a herbicidal difluoromethanesulfonamide derivative represented by the formula (I) and (b) at least one herbicidal compound selected from the group consisting of pretilachlor, butachlor, alachlor, metolachlor, acetochlor, clomeprop, bromobutide, benfuresate, indanofan, pyrazolate, benzofenap, pyrazoxyfen, pyraclonil, oxaziclomefone, bensulfuron-methyl, azimsulfuron, imazosulfuron, pyrazosulfuron-ethyl, cyclosulfamuron, ethoxysulfuron, halosulfuron-methyl, orthosulfamuron, cinosulfuron, metsulfuron-methyl, penoxsulam, thiobencarb, pyributycarb, molinate, dimethametryn, simetryn, cafenstrole, quinclorac, anilofos, mefenacet, fentrazamide, pentoxazone, oxadiargyl, oxadiazon, benzobicyclon, mesotrione, AVH301 (code no.

Abstract: An image forming apparatus includes: an image carrier; a latent image forming device; a developing device; an electrode which faces to the image carrier; an electric power source, a toner contamination detecting device for detecting toner contamination onto the electrode; an electrode cleaning device for cleaning the electrode; and a controlling section, wherein the control section controls the electric power source to apply at least an alternating current voltage to the electrode so that toner image is rearranged by reciprocally moving toner of the toner image between the image carrier and the electrode control section and allows the electrode cleaning device to clean the electrode when the toner contamination detecting device detects toner contamination on the electrode, and performs the toner rearrangement by the electrode from which the toner contamination is removed.

Abstract: A herbicide composition for paddy field characterized by containing (a) a herbicidal difluoromethanesulfonamide derivative represented by the formula (I) and (b) at least one herbicidal compound selected from the group consisting of pretilachlor, butachlor, alachlor, metolachlor, acetochlor, clomeprop, bromobutide, benfuresate, indanofan, pyrazolate, benzofenap, pyrazoxyfen, pyraclonil, oxaziclomefone, bensulfuron-methyl, azimsulfuron, imazosulfuron, pyrazosulfuron-ethyl, cyclosulfamuron, ethoxysulfuron, halosulfuron-methyl, orthosulfamuron, cinosulfuron, metsulfuron-methyl, penoxsulam, thiobencarb, pyributycarb, molinate, dimethametryn, simetryn, cafenstrole, quinclorac, anilofos, mefenacet, fentrazamide, pentoxazone, oxadiargyl, oxadiazon, benzobicyclon, mesotrione, AVH301 (code no.

Abstract: Disclosed is an image forming apparatus including a toner reallocation electrode to carry out a reallocation of a toner of a toner image, a toner detection section to detect a toner amount of the toner image and a control section to calculate a toner amount adhered to the toner reallocation electrode or a density distribution of the toner image based on the detected toner amount and to control an AC component of an applied voltage based on the calculated toner amount or density distribution, and the control section decides a maximum value of the AC component of the applied voltage based on the toner amount or decides a minimum value of the AC component of the applied voltage based on the density distribution, and the control section controls the AC component within a control range of smaller than or equal to the decided maximum value or greater than or equal to the decided minimum value.

Abstract: A developing apparatus, comprises an endless belt shaped donor member; a developer supporting member to carry developer including toner and magnetic carrier and to form a toner layer on the donor member; a first supporting member arranged in the inside of the donor member with a predetermined gap against the developer supporting member and to strain the donor member; a second supporting member arranged in the inside of the donor member with a predetermined gap against the developer supporting member and to strain the donor member; a toner supply bias applying section to apply onto the first supporting member a toner supply bias for supplying toner from the developer supporting member to the donor member; and a toner recovery bias applying section to apply onto the second supporting member a toner recovery bias for recovering toner from the donor member to the developer supporting member.

Abstract: An image forming apparatus includes: a supplying section for supplying developer; a first developing roller including plural magnetic poles and a first sleeve arranged rotatable to the first developing roller; a second developing roller including plural magnetic poles and a second sleeve arranged rotatable to the second developing roller, the second developing roller arranged adjacent to the first developing roller and parallel to the same; an electrode arranged between the first and second developing rollers; and a voltage applying unit for applying bias voltages each having different electric potential corresponding to the first developing roller, the second developing roller and the electrode, wherein an absolute value of the bias voltage to be applied to the electrode is larger than that of the bias voltage to be applied to the first developing roller and smaller than that of the bias voltage to be applied to the second developing roller.

Abstract: A developing apparatus, comprises an endless belt shaped donor member; a developer supporting member to carry developer including toner and magnetic carrier and to form a toner layer on the donor member; a first supporting member arranged in the inside of the donor member with a predetermined gap against the developer supporting member and to strain the donor member; a second supporting member arranged in the inside of the donor member with a predetermined gap against the developer supporting member and to strain the donor member; a toner supply bias applying section to apply onto the first supporting member a toner supply bias for supplying toner from the developer supporting member to the donor member; and a toner recovery bias applying section to apply onto the second supporting member a toner recovery bias for recovering toner from the donor member to the developer supporting member.

Abstract: A herbicide composition for paddy field characterized by containing (a) a herbicidal difluoromethanesulfonamide derivative represented by the formula (I) and (b) at least one herbicidal compound selected from the group consisting of pretilachlor, butachlor, alachlor, metolachlor, acetochlor, clomeprop, bromobutide, benfuresate, indanofan, pyrazolate, benzofenap, pyrazoxyfen, pyraclonil, oxaziclomefone, bensulfuron-methyl, azimsulfuron, imazosulfuron, pyrazosulfuron-ethyl, cyclosulfamuron, ethoxysulfuron, halosulfuron-methyl, orthosulfamuron, cinosulfuron, metsulfuron-methyl, penoxsulam, thiobencarb, pyributycarb, molinate, dimethametryn, simetryn, cafenstrole, quinclorac, anilofos, mefenacet, fentrazamide, pentoxazone, oxadiargyl, oxadiazon, benzobicyclon, mesotrione, AVH301 (code no.

Abstract: The invention is related to a novel phenylacetylene derivates of formula: wherein X represents hydrogen, halogen, optionally substituted C1-6 alkyl; Y represents hydrogen, halogen, cyano, nitro, optionally substituted C1-6 alkyl, C1-6 alkoxy, C3-8 cycloalkoxy, optionally substituted C1-6 alkylthio, C3-8 cycloalkylthio, C1-6 alkylsulfinyl, optionally substituted C1-6 alkylsulfonyl, C3-8 cycloalkylsulfonyl, C1-6 alkylsulfonyloxy, optionally substituted sulfonamide, optionally substituted carboxamide, etc., or Y may form together with Z which is bonded to the vicinal carbon atom a 5- or 6-membered ring; n is 0 or 1; Z represents hydrogen or halogen; m is 1 or 2; R represents hydrogen, halogen, C1-6 alkyl, tri(C1-6 alkyl)silyl, COORc or CONRdRe; Q represents a heterocyclic group, and their use as herbicid.

Abstract: The invention is related to a novel phenylacetylene derivates of formula: ##STR1## wherein X represents hydrogen, halogen, optionally substituted C.sub.1-6 alkyl; Y represents hydrogen, halogen, cyano, nitro, optionally substituted C.sub.1-6 alkyl, C.sub.1-6 alkoxy, C.sub.3-8 cycloalkoxy, optionally substituted C.sub.1-6 alkylthio, C.sub.3-8 cycloalkylthio, C.sub.1-6 alkylsulfinyl, optionally substituted C.sub.1-6 alkylsulfonyl, C.sub.3-8 cycloalkylsulfonyl, C.sub.1-6 alkylsulfonyloxy, optionally substituted sulfonamide, optionally substituted carboxamide, etc., or Y may form together with Z which is bonded to the vicinal carbon atom a 5- or 6-membered ring; n is 0 or 1; Z represents hydrogen or halogen; m is 1 or 2; R represents hydrogen, halogen, C.sub.1-6 alkyl, tri(C.sub.1-6 alkyl)silyl, COOR.sup.c or CONR.sup.d R.sup.e ; Q represents a heterocyclic group, and their use as herbicid.

Abstract: 1-Azinyl-tetraozolinones of the following formulae (I) and (II): ##STR1## wherein R.sup.1 and R.sup.2 are independently represent alkyl, haloalkyl, cycloalkyl, alkenyl, haloalkenyl, alkynyl or optionally substituted phenyl, orR.sup.1 and R.sup.2, together with the nitrogen atom to which they are bonded, may form a 5- or 6-membered heterocyclic ring which may optionally contain a further heteroatom, and said heterocyclic ring may optionally be benzo-condensed and/or be substituted by one or more of C.sub.1-4 alkyl(s), andR.sup.3 is a 6-membered heterocyclic aromatic group consisting of carbon atoms and 2 or 3 nitrogen atoms, which may optionally be substituted by halogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, C.sub.1-4 alkylthio, di(C.sub.1-4 alkyl)amino or phenyl.The compounds of the formula (I) exhibit an excellent herbicidal activity and the compounds of the formula (II) are useful as starting materials in the production of the compounds of the formula (I).

Abstract: Herbicidal 1-alkenyltetrazolinones of the formula: ##STR1## wherein R.sup.1 represents the group: ##STR2## or the group: ##STR3## R.sup.2 and R.sup.3, independently of one another, represent C.sub.1-6 alkyl, C.sub.3-7 cycloalkyl which may optionally be substited by methyl, C.sub.2-4 alkenyl, C.sub.2-5 alkynyl, phenyl which may optionally be substituted or aralkyl which may optionally be substituted, orR.sup.2 and R.sup.3 may optionally form, together with the N-atom to which they are bonded, a heterocyclic ring which may optionally be substituted, and novel intermediates therefor.

Abstract: A herbicide for paddy field comprising sulphonylaminophenyluracil derivative as an active ingredient which is represented by the formula (I): ##STR1## wherein R.sup.1 represents hydrogen or methyl,R.sup.2 represents C.sub.1-5 alkyl, fluro-substituted C.sub.1-2 alkyl or C.sup.3-6 cycloalkyl,optionally applied in combination with another herbicide.

Abstract: Herbicidal novel tetrazolinone derivatives of the formula: ##STR1## wherein R.sup.1 is alkyl, haloalkyl, cycloalkyl, alkenyl, haloalkenyl, alkynyl, alkoxy or phenyl which is optionally substituted, andR.sup.2 is alkyl, haloalkyl, cycloalkyl, alkenyl, haloalkenyl, alkynyl, alkoxy or phenyl which is optionally substituted, orR.sup.1 and R.sup.2 form, together with the nitrogen atom to which R.sup.1 and R.sup.2 are bonded, a 5- or 6-membered heterocyclic ring, optionally fused to a carbocyclic ring optionally and independently substituted by C.sub.1-4 alkyl, andR.sup.3 is a 5-membered heterocyclic radical containing at least one hereto atom selected from the group consisting of nitrogen, oxygen, and sulfur, optionally substituted by at least one substitutent selected from the group consisting of halogen, benzyl, phenyl, halogen-substituted phenyl, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, C.sub.1-4 haloalkyl, C.sub.1-4 haloalkoxy, C.sub.1-4 alkylthio, C.sub.1-4 alkyl-sulfonyl and C.sub.