Abstract: Provided is a resin molded body having excellent electromagnetic wave shielding properties in a high-frequency region of 1 GHz or more. The resin molded body containing a thermoplastic resin, plate-like graphite, at least one of carbon black and metal fibers, the content of the plate-like graphite being 50 parts by weight or more and 200 parts by weight or less, relative to 100 parts by weight of the thermoplastic resin, the carbon black having a DBP oil absorption of 100 ml/100 g or more and 600 ml/100 g or less, the metal fibers having a diameter of 5 ?m or more and 20 ?m or less, the metal fibers having a fiber length of 2 mm or more and 12 mm or less, and the content of at least one of the carbon black and the metal fibers being 1 part by weight or more and 50 parts by weight or less, relative to 100 parts by weight of the thermoplastic resin.

Abstract: An image forming apparatus is disclosed, which includes an optical scanning portion which forms an electrostatic latent image on a photosensitive body; a placing member on which the optical scanning portion is placed; a first supporting member to which the placing member is fixed; a second supporting member opposite the first supporting member across the placing member; and a connecting member which connects the second supporting member and the placing member, the connecting member including a first surface which is fixed to the second supporting member and a second surface which is bent at an approximately right angle with respect to the first surface and is fixed to the placing member.

Abstract: An image forming apparatus is disclosed, which includes an optical scanning portion which forms an electrostatic latent image on a photosensitive body; a placing member on which the optical scanning portion is placed; a first supporting member to which the placing member is fixed; a second supporting member opposite the first supporting member across the placing member; and a connecting member which connects the second supporting member and the placing member, the connecting member including a first surface which is fixed to the second supporting member and a second surface which is bent at an approximately right angle with respect to the first surface and is fixed to the placing member.

Abstract: An image forming apparatus includes a first duct unit, a first air blowing fan, a second duct unit, a filter, and a second air blowing fan. The first duct unit includes a power source substrate, a first intake portion, and a first exhaust portion. The first air blowing fan forms an airflow from the first intake portion to the first exhaust portion. The second duct unit includes a second intake portion to take air in from inside the image forming apparatus, and includes a second exhaust portion to exhaust the air taken in from the second intake portion to outside of the image forming apparatus. The filter is disposed between the second intake portion and the second exhaust portion in an airflow from the second intake portion to the second exhaust portion. The second air blowing fan forms the airflow from the second intake portion to the second exhaust portion.

Abstract: A frame for an image forming apparatus which includes a sheet cassette, an image forming unit, a first conveying roller, and a second conveying roller. The frame includes a first frame above which a second frame is coupled, the first frame supporting the sheet cassette and the first conveying roller, and the second frame supporting the second conveying roller and the image forming unit. A coupling member couples a first strut and a second strut, the first strut being part of the first frame and including: a first base portion; a first plate portion; and a second plate portion. The second strut is part of the second frame and includes: a second base portion disposed above the first base portion and contacting the first base portion; a third plate portion; and a fourth plate portion. The coupling member includes: a third base portion opposed to and spaced apart from the first base portion and the second base portion; a fifth plate portion; and a sixth plate portion.

Abstract: An image forming apparatus includes a first duct unit, a first air blowing fan, a second duct unit, a filter, and a second air blowing fan. The first duct unit includes a power source substrate, a first intake portion, and a first exhaust portion. The first air blowing fan forms an airflow from the first intake portion to the first exhaust portion. The second duct unit includes a second intake portion to take air in from inside the image forming apparatus, and includes a second exhaust portion to exhaust the air taken in from the second intake portion to outside of the image forming apparatus. The filter is disposed between the second intake portion and the second exhaust portion in an airflow from the second intake portion to the second exhaust portion. The second air blowing fan forms the airflow from the second intake portion to the second exhaust portion.

Abstract: An image forming apparatus includes a sheet cassette, an image forming unit configured to form an image on a sheet fed from the sheet cassette, a first frame for supporting the sheet cassette, and a second frame provided on the first frame in a vertical direction for supporting the image forming unit. The first frame includes a first strut, a side plate spaced apart from the first strut, and a stay coupling the first strut and the side plate, wherein the sheet cassette is slidable in a direction in which the stay extends. The second frame includes a second strut coupled to the first strut. A grip is provided pivotably at the first strut, the grip being graspable by an operator.

Abstract: A frame of an image forming apparatus, includes: a bottom plate having a bottom face whose shape is substantially quadrangular; a first caster; a second caster; a third caster attached near a second side of the bottom face, the third caster being disposed such that a barycenter of the image forming apparatus is located inside a triangle formed by imaginary lines connecting the first caster, the second caster, and the third caster; and a fourth caster attached to a region outside the triangle, the fourth caster being provided closer to the second side than the barycenter, wherein in a case where the image forming apparatus is installed on the installation face which is flat, the first caster, the second caster, and the third caster are installed on the installation face, and the fourth caster is located away from the installation face.

Abstract: A frame of an image forming apparatus, includes: a first frame; a second frame disposed above the first frame, the second frame being coupled to the first frame; and a coupling member coupling a first strut and a second strut, the first strut being part of the first frame, the first strut including: a first base portion; a first plate portion; and a second plate portion, the second strut being part of the second frame, the second strut including: a second base portion disposed above the first base portion, the second base portion being in contact with the first base portion; a third plate portion; and a fourth plate portion, the coupling member including: a third base portion opposed to and spaced apart from the first base portion and the second base portion; a fifth plate portion; and a sixth plate portion.

Abstract: An image forming apparatus includes: a sheet cassette; an image forming unit configured to form an image on a sheet fed from the sheet cassette; a first frame including: a first strut; a side plate spaced apart from the first strut; and a stay coupling the first strut and the side plate, the first frame supporting the sheet cassette, the sheet cassette being capable of slide-moving in a direction in which the stay extends; a second frame provided on the first frame in a vertical direction, the second frame including a second strut coupled to the first strut, the second frame supporting the image forming unit; and a grip provided pivotably at the first strut, the grip being graspable by an operator.

Abstract: A frame of an image forming apparatus, includes: a bottom plate having a bottom face whose shape is substantially quadrangular; a first caster; a second caster; a third caster attached near a second side of the bottom face, the third caster being disposed such that a barycenter of the image forming apparatus is located inside a triangle formed by imaginary lines connecting the first caster, the second caster, and the third caster; and a fourth caster attached to a region outside the triangle, the fourth caster being provided closer to the second side than the barycenter, wherein in a case where the image forming apparatus is installed on the installation face which is flat, the first caster, the second caster, and the third caster are installed on the installation face, and the fourth caster is located away from the installation face.

Abstract: An image forming apparatus includes an apparatus body, a movable unit relatively movable between a first position and a second position, a lock portion configured to lock the movable unit to the apparatus body and an urging portion. The lock portion includes a locked member provided on one of the movable unit and the apparatus body, and a locking member provided on the other of the movable unit and the apparatus body and configured to move between a lock position and a retracting position. The urging portion is configured to urge the movable unit located at a position between the first position and the second position, toward the first position. The position between the first position and the second position is a position at which the locking member in the lock position and the locked member contact each other.

Abstract: An exhaust duct provided on a back surface side of an image forming apparatus, and including a plurality of air ducts through which air inside the apparatus is exhausted toward outside the apparatus, a plurality of filters provided in the plurality of air ducts, respectively, and which removes a fine particle included in the air exhausted through the air ducts, and a filter case that houses the plurality of filters in a manner that the filters are able to be taken out from the filter case are included, and the filter case is provided in a drawable manner to one of side surface sides in a right and left direction or to an upper surface side in an up and down direction of the image forming apparatus, from a front surface side to a back surface side of the image forming apparatus, with respect to the image forming apparatus.

Abstract: An exhaust duct provided on a back surface side of an image forming apparatus, and including a plurality of air ducts through which air inside the apparatus is exhausted toward outside the apparatus, a plurality of filters provided in the plurality of air ducts, respectively, and which removes a fine particle included in the air exhausted through the air ducts, and a filter case that houses the plurality of filters in a manner that the filters are able to be taken out from the filter case are included, and the filter case is provided in a drawable manner to one of side surface sides in a right and left direction or to an upper surface side in an up and down direction of the image forming apparatus, from a front surface side to a back surface side of the image forming apparatus, with respect to the image forming apparatus.

Abstract: An image forming apparatus includes an image forming portion, a housing, and a partition wall portion. The housing is configured to store the image forming portion and comprising first and second exhaust ports disposed on a same side wall portion of the housing. The first and second exhaust ports are configured to discharge air which has been taken into the housing and has passed through the image forming portion. The partition wall portion is provided so as to project from the side wall portion and configured to separate an outside space, facing the first exhaust port and to which the air discharged out of the first exhaust port is discharged, of the housing from an outside space, facing the second exhaust port and to which the air is discharged out of the second exhaust port, of the housing.

Abstract: An exhaust duct provided on a back surface side of an image forming apparatus, and including a plurality of air ducts through which air inside the apparatus is exhausted toward outside the apparatus, a plurality of filters provided in the plurality of air ducts, respectively, and which removes a fine particle included in the air exhausted through the air ducts, and a filter case that houses the plurality of filters in a manner that the filters are able to be taken out from the filter case are included, and the filter case is provided in a drawable manner to one of side surface sides in a right and left direction or to an upper surface side in an up and down direction of the image forming apparatus, from a front surface side to a back surface side of the image forming apparatus, with respect to the image forming apparatus.

Abstract: An image forming apparatus includes an apparatus body, a movable unit relatively movable between a first position and a second position, a lock portion configured to lock the movable unit to the apparatus body and an urging portion. The lock portion includes a locked member provided on one of the movable unit and the apparatus body, and a locking member provided on the other of the movable unit and the apparatus body and configured to move between a lock position and a retracting position. The urging portion is configured to urge the movable unit located at a position between the first position and the second position, toward the first position. The position between the first position and the second position is a position at which the locking member in the lock position and the locked member contact each other.

Abstract: An exhaust duct provided on a back surface side of an image forming apparatus, and including a plurality of air ducts through which air inside the apparatus is exhausted toward outside the apparatus, a plurality of filters provided in the plurality of air ducts, respectively, and which removes a fine particle included in the air exhausted through the air ducts, and a filter case that houses the plurality of filters in a manner that the filters are able to be taken out from the filter case are included, and the filter case is provided in a drawable manner to one of side surface sides in a right and left direction or to an upper surface side in an up and down direction of the image forming apparatus, from a front surface side to a back surface side of the image forming apparatus, with respect to the image forming apparatus.

Abstract: An image forming apparatus includes an image bearing member, a toner image forming unit, an intermediary transfer member, a first driving source, a second driving portion, a speed instruction value changing portion, an executing portion for executing an operation in a detecting mode in a first detection period in a first state and in a second detection period in a second state larger in frictional force than in the first state, and a setting portion. In each of the first and second detection periods, the speed instruction value of the second driving source is set at a fixed value and the speed instruction value of the first driving source is successively changed to different values, and the setting portion sets the speed instruction value of the first driving source used during the image formation on the basis of a detection result in the detecting mode.

Abstract: An image forming apparatus includes an image forming portion, a housing, and a partition wall portion. The housing is configured to store the image forming portion and comprising first and second exhaust ports disposed on a same side wall portion of the housing. The first and second exhaust ports are configured to discharge air which has been taken into the housing and has passed through the image forming portion. The partition wall portion is provided so as to project from the side wall portion and configured to separate an outside space, facing the first exhaust port and to which the air discharged out of the first exhaust port is discharged, of the housing from an outside space, facing the second exhaust port and to which the air is discharged out of the second exhaust port, of the housing.