Abstract: An image forming apparatus includes an apparatus body, a recording head, head tanks, main tanks, liquid feed pumps, a first driving source, a drive control unit, and a drive switching assembly. The drive switching assembly includes a second driving source, a cam, a slider member, a switching gear, switching position detected portions, and a detector. The detected portions are disposed at the cam so as to correspond to switching positions of the liquid feed pumps. One of the detected portions has a greater width in a rotation direction of the cam than any other detected portion. When a time from when the detector detects one of the detected portions to when the detector detects another one of the detected portions is shorter than a threshold value, the drive control unit determines, as a home position, a position of the cam on detection of the another one with the detector.

Abstract: An image forming device includes a drive transfer device that selectively transmits a driving force of a first drive source to one of liquid feed pumps, a suction part of a maintenance recovery device and an air-vent opening part. The air-vent opening part is arranged to have a maximum driving-force transmission path leading to the drive transfer device among the liquid feed pumps, the suction part and the air-vent opening part. The maintenance recovery device, the drive transfer device and the liquid feed pumps are arranged in order in a sheet transport direction. The suction part of the maintenance recovery device and the drive transfer device are arranged on opposite sides of a cap of the maintenance recovery device in the sheet transport direction.

Abstract: An image forming apparatus, including an image forming unit; a resin-made frame to support the image forming unit; a drive source arranged on a one-end side of a transmission path to generate driving force; a gear arranged on the other-end side of the transmission path to be rotated, while one of axial ends of a shaft of the gear is supported by the frame; a metal-made first supporting member fixed to the frame to support the other of axial ends of the shaft of the gear thereon; a metal-made second supporting member fixed to the frame to support the drive source thereon and; an endless belt; a first pulley supported by the second supporting member to transmit the driving force to the endless belt, the first pulley being; and a second pulley having the endless belt strained there-around and supported by the first supporting member, is provided.

Abstract: A liquid cartridge detachably attached to an image forming apparatus to supply liquid to image forming apparatus. The liquid cartridge includes a cartridge case composed of first and second sub cases. At least one of the first and second sub cases includes an open space to accommodate an information storage device in the open space. The first and second sub cases are combined to close the open space and hold the information storage device so as to prevent removal of the information storage device accommodated in the open space therefrom.

Abstract: An image forming apparatus includes an apparatus body, a recording head, head tanks, main tanks, liquid feed pumps, a first driving source, a drive control unit, and a drive switching assembly. The drive switching assembly includes a second driving source, a cam, a slider member, a switching gear, switching position detected portions, and a detector. The detected portions are disposed at the cam so as to correspond to switching positions of the liquid feed pumps. One of the detected portions has a greater width in a rotation direction of the cam than any other detected portion. When a time from when the detector detects one of the detected portions to when the detector detects another one of the detected portions is shorter than a threshold value, the drive control unit determines, as a home position, a position of the cam on detection of the another one with the detector.

Abstract: An image forming apparatus includes a casing having an opening that is open upward, a cover supported by the casing, a process cartridge configured to be attached to or removed from the casing through the opening, and a particular guide configured to guide the process cartridge when the process cartridge is attached to or removed from the casing. The cover is configured to pivot around a pivot axis to open and close the opening. The cover includes a pressing portion. The pressing portion is configured to, when the cover is closing the opening, contact the process cartridge being attached inside the casing and press the process cartridge toward an attachment position in which the process cartridge is attached to the casing. A path of the pressing portion in the casing is substantially same as a shape of the particular guide as viewed from an axial direction of the pivot axis.

Abstract: An image forming apparatus includes a casing having an opening that is open upward, a cover configured to open and close the opening, a process cartridge, and a guide. The guide is configured to guide the process cartridge in the casing while changing a position of the process cartridge. The process cartridge includes a photosensitive member, a first guided portion and a second guided portion. The guide includes a first guide configured to guide the first guided portion and a second guide configured to guide the second guided portion. The second guide has an upper portion disposed on an upstream side in an attaching direction of the process cartridge, and a lower portion extending smoothly from a lower end of the upper portion to a stop position in which the second guided portion is disposed. The lower portion is curved away from the first guide.

Abstract: An image forming device includes a main casing, a process cartridge, a sheet passage, and a first guide. The process cartridge includes a photosensitive body, and a transfer member, and is configured to be attachable to and detachable from the main casing. The sheet passage extends in a first direction and is configured to allow a sheet to pass between the photosensitive body and the transfer member. The first guide is configured to guide the process cartridge such that the process cartridge is attachable to and detachable from the main casing. The first guide has a support portion extending in a second direction substantially perpendicular to the first direction and configured to support the process cartridge in a state where the process cartridge is attached to the main casing.

Abstract: An image forming apparatus having an image forming unit, a pair of frames, and a sheet cassette, is provided. The sheet cassette has a pair of lateral walls, a first engagement portion, and a first joint portion. Space enclosed by the first engagement portion, the first joint portion, and an outer surface of one of the lateral walls is exposed toward an installation side, from which the sheet cassette is installed in the image forming apparatus. The pair of frames has a second engagement portion and a second joint portion. Space enclosed by the second engagement portion, the second joint portion, and an inner surface of the one of the frames is exposed toward a side opposite from the installation side. When the sheet cassette is in an operable position, the first engagement portion is placed in an engagement position to be engaged with the second engagement portion.

Abstract: A sheet feeder includes a casing having a loading surface, a supply roller, a drive mechanism, a blocking member, and an interlocking mechanism. The supply roller is configured to feed recording sheets on the loading surface toward the image forming unit. The drive mechanism is configured to move the supply roller. The blocking member is disposed upstream from the supply roller in a sheet feed direction and includes a block surface configured to be moved between a first position and a second position. The block surface is configured to block insertion of a recording sheet to a downstream side when in the first position, and configured to allow insertion of the recording sheets on the loading surface when in the second position. The interlocking mechanism is configured to receive a drive force from the drive mechanism to move the blocking member.

Abstract: A sheet feeder includes a loading surface, a supply roller configured to feed recording sheets loaded on the loading surface, an overload prevention member disposed upstream from the supply roller in a sheet feed direction, and a movable member disposed downstream from the overload prevention member in the sheet feed direction. The overload prevention member includes a restriction surface configured to be moved between a first position and a second position. The movable member is configured to be moved from a third position to a fourth position by being pushed by leading ends of the recording sheets. The movable member and the overload prevention member are configured to interlock each other such that, when the movable member is in the third position, the restriction surface is in the first position, and when the movable member is in the fourth position, the restriction surface is in the second position.

Abstract: An image forming apparatus includes an apparatus body, a recording head, head tanks, main tanks, liquid feed pumps, a first driving source, a drive control unit, and a drive switching assembly. The drive switching assembly includes a second driving source, a cam, a slider member, a switching gear, switching position detected portions, and a detector. The detected portions are disposed at the cam so as to correspond to switching positions of the liquid teed pumps. One of the detected portions has a greater width in a rotation direction of the cam than any other detected portion. When a time from when the detector detects one of the detected portions to when the detector detects another one of the detected portions is shorter than a threshold value, the drive control unit determines, as a home position, a position of the cam on detection of the another one with the detector.

Abstract: An objective of the present invention is to provide compounds having potent antitumor activity. The compounds of the present invention are represented by formula (I) or a pharmaceutically acceptable salt or solvate thereof: wherein X?CH or N; Z?O or S; L=O or S; M=CR10R11, wherein R10 and R11?H, alkyl, or alkoxy, NR12 wherein R12?H or alkyl; R1, R2, and R3?H or optionally substituted alkoxy; R4?H; R5-8?H, halogen, alkoxy or the like; and R9=alkyl optionally substituted by —R14, -T-R15, or —NR16R17 wherein T=O, S, or NH; R14=an optionally substituted carbocyclic or heterocyclic ring; and R15-17=alkyl or an optionally substituted carbocyclic or heterocyclic ring, or —NR18R19 wherein R18 and R19?H, optionally substituted alkyl, or an optionally substituted carbocylic or heterocyclic ring, or optionally substituted carbocyclic or heterocyclic ring.

Abstract: An image forming apparatus is provided. The image forming apparatus includes a body including a conveyance path into which a sheet is conveyed and a feed tray. The feed tray includes a separation pad, which is provided at a widthwise center of the feed tray; and a holding member, which is provided downstream of the separation pad in a direction of conveyance of the sheet, the holding member comprising a driven roller, which is wider than the separation pad, and at least two guide members, one guide member arranged on each side of the driven roller.

Abstract: A sheet conveying device includes an accommodating unit, a conveying roller, a driving member, and a clutch mechanism. The accommodating tray has a sheet accommodating unit. The conveying roller is for conveying a sheet. The driving member supplies a drive force to the conveying roller. The clutch mechanism includes a link that moves in mechanical conjunction with the attachment or detachment of the accommodating tray and a movable member that moves in association with the movement of the link. The clutch mechanism selectively connects and disconnects a drive force transmitting path by the movement of the movable member. The clutch mechanism disconnects the drive force transmitting path when the accommodating tray is detached, and the clutch mechanism connects the drive force transmitting path when the accommodating tray is attached.

Abstract: A sheet feeder includes a casing having a loading surface, a supply roller, a drive mechanism, a blocking member, and an interlocking mechanism. The supply roller is configured to feed recording sheets on the loading surface toward the image forming unit. The drive mechanism is configured to move the supply roller. The blocking member is disposed upstream from the supply roller in a sheet feed direction and includes a block surface configured to be moved between a first position and a second position. The block surface is configured to block insertion of a recording sheet to a downstream side when in the first position, and configured to allow insertion of the recording sheets on the loading surface when in the second position. The interlocking mechanism is configured to receive a drive force from the drive mechanism to move the blocking member.

Abstract: A sheet feeder includes a loading surface, a supply roller configured to feed recording sheets loaded on the loading surface, an overload prevention member disposed upstream from the supply roller in a sheet feed direction, and a movable member disposed downstream from the overload prevention member in the sheet feed direction. The overload prevention member includes a restriction surface configured to be moved between a first position and a second position. The movable member is configured to be moved from a third position to a fourth position by being pushed by leading ends of the recording sheets. The movable member and the overload prevention member are configured to interlock each other such that, when the movable member is in the third position, the restriction surface is in the first position, and when the movable member is in the fourth position, the restriction surface is in the second position.

Abstract: An apparatus includes: an image forming unit having a photosensitive drum; a motor configured to rotate forwardly and reversely; a discharging roller to which a driving force is transferred from the motor; an one way clutch configured to transfer the driving force to the photosensitive drum or block a transfer of the driving force; a returning roller returning the recording sheet drawn by the discharging roller; a rotation direction converting mechanism transmitting the driving force to the returning roller to rotate the returning roller in a certain direction; and a time lag mechanism including engaging portions with a gap therebetween, when the rotation direction of the motor being switched, each of the engaging portions being engaged with each other after a predetermined time, thereby delaying the transfer of the driving force from the motor to the returning roller.

Abstract: An image forming apparatus includes: a main body; an image forming unit including a plurality of photosensitive drums on which electrostatic latent images are formed, respectively; a sheet storing unit detachably attached to the main body and configured to store a recording sheet, and the sheet storing unit being disposed in a first space defined in the main body when the sheet storing unit is attached to the main body; and a belt unit disposed between the plurality of photosensitive drums and the sheet storing unit and including a belt opposing the plurality of photosensitive drums. The belt unit is detachable from the main body through the first space in a state in which at least a part of the sheet storing unit is positioned outside the main body.

Abstract: An image forming apparatus having an image forming unit, a pair of frames, and a sheet cassette, is provided. The sheet cassette has a pair of lateral walls, a first engagement portion, and a first joint portion. Space enclosed by the first engagement portion, the first joint portion, and an outer surface of one of the lateral walls is exposed toward an installation side, from which the sheet cassette is installed in the image forming apparatus. The pair of frames has a second engagement portion and a second joint portion. Space enclosed by the second engagement portion, the second joint portion, and an inner surface of the one of the frames is exposed toward a side opposite from the installation side. When the sheet cassette is in an operable position, the first engagement portion is placed in an engagement position to be engaged with the second engagement portion.