Abstract: A toner case includes a case main body, an attachment member and a conveying member. The case main body has a discharge port configured to discharge a toner. The attachment member is provided at the case main body to be rotatable in normal and reverse rotation directions around a rotation axis. The conveying member is rotatable in the normal and reverse rotation direction around the rotation axis to convey the toner from/to the inside of the case main body to/from a side of the discharge port. When the attachment member is reversely rotated, the conveying member is moved in a direction of the rotation axis between a first position in which the conveying member is reversely rotated together with the attachment member and a second position in which the attachment member runs idle.

Abstract: An unit is provided with a friction member which is disposed at a position that is on a downstream side of a drive roller driving a belt and is on an immediate upstream side of a position sensor. The friction member wipes off contaminants adhering to a rear surface of the running belt, thereby constantly keeping the rear surface clean, and therefore, no toner scatters to the sensor. Further, the friction member gives a moderate tension to the belt, so that the posture of the belt is stabilized at a position where it passes the sensor, resulting in enhanced detection accuracy of the sensor.

Abstract: An image forming apparatus includes photoconductive drums aligned side by side for toner images in colors to be formed on peripheral surfaces thereof. A transfer belt turns while stretched over rollers for the toner images to be transferred thereon by being superimposed one another as a surface thereof abuts on the peripheral surfaces of the photoconductive drums. A transfer roller transfers the toner images from the transfer belt onto a recording sheet. The transfer belt uses the position of the transfer roller as a turning position and turns to have a first side that moves in a first direction towards the turning position while abutting the peripheral surfaces of the photoconductive drums and a second side that moves opposite to the first direction using the turning position as a starting point. A cooling mechanism cools the transfer belt by circulating taken-in outside air along a surface of the second side.

Abstract: A fixing device is disclosed that includes a fixing roller, a pressure roller that is in pressure contact with the fixing roller, a plurality of belt support rollers that are mutually spaced apart from each other, and an endless belt that is wrapped around the belt support rollers. A portion of the outer peripheral surface of the endless belt is in pressure contact with a portion of the outer peripheral surface of the fixing roller, and the endless belt is heated by at least one heat generating element arranged in at least one of the belt support rollers. The fixing roller is rotatively driven by the electric motor M.

Abstract: An optical scanning device has a light source for irradiating a beam; a scanning optical system for allowing the beam to deflectively scan a scanned surface; and a housing for supporting the light source and the scanning optical system. The housing includes opposed facing first and second side surfaces. A first frame faces the first side surface or a surface near the first surface. A second frame faces the second surface of the housing. A first support supports the first side surface or a side surface near the same at two points with the first frame. A second support supports the second side surface at one point with the second frame. A forcible contact mechanism generates a biasing force for urging the first side surface toward the first frame; and an adjusting mechanism on the second support adjusts a deviation of the housing over a horizontal plane.

Abstract: An image processing apparatus having a structure in which the positioning accuracy of the optical instruments related to image processing are hardly influenced from the condition of the installation surface of the apparatus body. Near the edges of floor plate 60 forming the undersurface of the body of image processing apparatus A, four legs 61, 62, 63a, and 63b are provided in a protruding manner in three points forming generally a triangle, and optical unit X1 in which the optical instruments are mounted is supported by vertical positioning plate 6a or horizontal positioning plate 6a, which are a part of the apparatus body's structure, in three points forming a triangle in the same direction as the triangle formed by Legs 61, 62, and 63 in three points when viewed from underneath, and then, these three points are arranged in the position near each of the three points provided with legs 61, 62, and 63 when viewed from underneath.

Abstract: An unit is provided with a friction member which is disposed at a position that is on a downstream side of a drive roller driving a belt and is on an immediate upstream side of a position sensor. The friction member wipes off contaminants adhering to a rear surface of the running belt, thereby constantly keeping the rear surface clean, and therefore, no toner scatters to the sensor. Further, the friction member gives a moderate tension to the belt, so that the posture of the belt is stabilized at a position where it passes the sensor, resulting in enhanced detection accuracy of the sensor.

Abstract: A fixing device is disclosed that includes a fixing roller, a pressure roller that is in pressure contact with the fixing roller, first and second belt support rollers that are mutually spaced apart from each other, and an endless belt that is wrapped around both the first and the second belt support rollers. A portion of the outer peripheral surface of the endless belt is in pressure contact with a portion of the outer peripheral surface of the fixing roller, and the endless belt is heated by means of a heating means. The fixing roller is rotatively driven by the electric motor M.

Abstract: An optical scanning device has a light source for irradiating a beam; a scanning optical system for allowing the beam to deflectively scan a scanned surface; and a housing for supporting the light source and the scanning optical system. The housing includes opposed facing first and second side surfaces. A first frame faces the first side surface or a surface near the first surface. A second frame faces the second surface of the housing. A first support supports the first side surface or a side surface near the same at two points with the first frame. A second support supports the second side surface at one point with the second frame. A forcible contact mechanism generates a biasing force for urging the first side surface toward the first frame; and an adjusting mechanism on the second support adjusts a deviation of the housing over a horizontal plane.

Abstract: An image forming apparatus includes photoconductive drums aligned side by side for toner images in colors to be formed on peripheral surfaces thereof. A transfer belt turns while stretched over rollers for the toner images to be transferred thereon by being superimposed one another as a surface thereof abuts on the peripheral surfaces of the photoconductive drums. A transfer roller transfers the toner images from the transfer belt onto a recording sheet. The transfer belt uses the position of the transfer roller as a turning position and turns to have a first side that moves in a first direction towards the turning position while abutting the peripheral surfaces of the photoconductive drums and a second side that moves opposite to the first direction using the turning position as a starting point. A cooling mechanism cools the transfer belt by circulating taken-in outside air along a surface of the second side.

Abstract: The object of this invention is to provide an image processing apparatus having a structure in which the positioning accuracy of the optical instruments related to image processing are hardly influenced from the condition of the installation surface of the apparatus body. Near the edges of Floor plate 60 forming the undersurface of the body of Image processing apparatus A, four Legs 61, 62, 63a, and 63b are provided in a protruding manner in three points forming generally a triangle, and Optical unit X1 in which the optical instruments are mounted is supported by Vertical positioning plate 6a or Horizontal positioning plate 7a, which are a part of the apparatus body's structure, in three points forming a triangle in the same direction as the triangle formed by Legs 61, 62, and 63 in three points when viewed from underneath, and then, these three points are arranged in the position near each of the three points provided with Legs 61, 62, and 63 when viewed from underneath.

Abstract: A fixing device is disclosed that includes a fixing roller, a pressure roller that is in pressure contact with the fixing roller, first and second belt support rollers that are mutually spaced apart from each other, and an endless belt that is wrapped around both the first and the second belt support rollers. A portion of the outer peripheral surface of the endless belt is in pressure contact with a portion of the outer peripheral surface of the fixing roller, and the endless belt is heated by means of a heating means. The fixing roller is rotatively driven by the electric motor M.

Abstract: An image forming apparatus having a developing mechanism for successively forming a plurality of color toner images on a photoreceptor; and an intermediate transfer member on which the plurality of color toner images are transferred from the photoreceptor in a superposed manner for primary transfer and from which the plurality of color toner images superposedly transferred thereon are transferred to a transfer sheet for secondary transfer. A circumferential ratio between the photoreceptor and the intermediate transfer member is 1:N (N is a non-integer).

Abstract: The present invention relates to quinoline derivatives of the formula ##STR1## wherein Z is an amino group or a halogen atom, R is ##STR2## in which R.sub.1 is a hydrogen atom, a lower alkyl or haloalkyl group, R.sub.2 is a hydrogen atom or a lower alkyl group, R.sub.3 is a lower alkyl or haloalkyl group, R.sub.4 is a hydrogen atom or a lower alkyl group, R.sub.5 and R.sub.6 are the same or different and each represents a hydrogen atom or a lower alkyl group, or R.sub.5 and R.sub.6, together with the nitrogen atom to which they are attached, form a heterocyclic ring, and n is 0 or 1, with the proviso that when Z is an amino group, R is (B);and esters thereof and salts thereof and processes for preparation thereof. These compounds show excellent antibacterial activity and are useful antibacterial agents.

Abstract: The present invention relates to a quinoline derivative of the formula ##STR1## wherein Z is an amino group or a halogen atom, R.sub.1 is a hydrogen atom or a methyl or ethyl group, R.sub.2 is a hydrogen atom or a methyl or fluoromethyl group, R.sub.3 and R.sub.4 are the same or different and each represents a hydrogen atom or a methyl group, and n is 1 or 2;and esters thereof and salts thereof and processes for preparation thereof. These compounds show excellent antibacterial activity and are useful antibacterial agents.

Abstract: The present invention relates to a 1,8-naphthyridine derivative of the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are the same or different and each hydrogen or lower alkyl having 1 to 5 carbon atoms; and esters thereof and salts thereof and processes for preparation thereof. These compounds show excellent antibacterial activity and are useful antibacterial agents.