Abstract: A developing cartridge includes: a housing accommodating developing agent; a developing roller including a developing-roller shaft extending in a first direction; an electrode made of an electrically conductive resin; and a first collar made of an electrically non-conductive resin. The electrode is positioned at one end portion of the housing in the first direction. The electrode is electrically connected to the developing-roller shaft. The first collar covers one end portion of the developing-roller shaft in the first direction. The first collar includes: a first arm extending in the first direction; and a first pawl configured to engage with the electrode. The first pawl protrudes from the first arm in a direction away from the developing-roller shaft. The first pawl is movable between: a first position at which the first pawl is in engagement with the electrode; and a second position at which the first pawl is separated from the electrode.

Abstract: A developing cartridge includes: a casing; a developing roller extending in a first direction; a boss movable with the casing; and a first lever movable relative to the casing. The first lever includes: one end portion functioning as a point of effort; another end portion functioning as a point of load; a shaft functions as a fulcrum and positioned between the one end portion and the another end portion; and a first hole into which the boss is fitted. By the one end portion receiving a driving force, the first lever is pivotally movable about the shaft. A dimension of the first hole in a second direction crossing the first direction is greater than a dimension in the second direction of the boss. In a case where the casing moves in the second direction relative to the first lever, the boss moves in the second direction within the first hole.

Abstract: A transfer belt unit mountable to and demountable from an apparatus main body of an image forming apparatus, the transfer belt unit including: a transfer belt being in contact with a photosensitive drum of a drum cartridge of the image forming apparatus in a state where the transfer belt unit is mounted to the apparatus main body, the transfer belt being configured to transfer a toner image on the photosensitive drum to a sheet conveyed between the photosensitive drum and the transfer belt and to convey the sheet conveyed between the photosensitive drum and the transfer belt toward a fixing unit of the image forming apparatus in the state where the transfer belt unit is mounted to the apparatus main body, and a belt memory in which information about the transfer belt unit is stored.

Abstract: There is provided a method of assembling a developing cartridge including a casing, first and second cams, and a resiliently urging member. The casing has a through-hole extending in a first direction. The shaft extends in the first direction and is movable in the first direction relative to the casing. The first and second cams are positioned at one end portion and another end portion of the shaft, and are movable together with the shaft in the first direction. The resiliently urging member is attached to the another end portion of the shaft and is positioned between the casing and the second cam. The method includes: attaching the first cam to the one end portion of the shaft; inserting the shaft in the through-hole; and attaching the resiliently urging member to the another end portion of the shaft while the first cam contacts a jig in the first direction.

Abstract: A developing cartridge includes: a casing; a developing roller extending in a first direction; a boss movable with the casing; and a first lever movable relative to the casing. The first lever includes: one end portion functioning as a point of effort; another end portion functioning as a point of load; a shaft functions as a fulcrum and positioned between the one end portion and the another end portion; and a first hole into which the boss is fitted. By the one end portion receiving a driving force, the first lever is pivotally movable about the shaft. A dimension of the first hole in a second direction crossing the first direction is greater than a dimension in the second direction of the boss. In a case where the casing moves in the second direction relative to the first lever, the boss moves in the second direction within the first hole.

Abstract: A cartridge includes: a housing; a storage medium; and a holder. The storage medium has an electrical contact surface. The holder is movable relative to the housing. The holder includes: a first holder member; and a second holder member. The first holder member has a pawl portion and is configured to hold the electrical contact surface. The second holder member includes a corner portion. The pawl portion is engageable with the corner portion. The second holder member has a through-hole. An engagement part of the pawl portion engaging with the corner portion is accessible from outside the second holder member through the through-hole in a state where the pawl portion engages with the corner portion.

Abstract: A temperature control unit includes: a substantially flat-plate-shaped placement section (10) configured to support a heat transfer target; a heating section (20) configured to heat a heat transfer target placed on the placement section (10); and a heat transfer section (30) disposed in contact with at least one of the placement section (10) and the heating section (20), the heat transfer section (30) being at least partially formed of a metal porous structure.

Abstract: A developing cartridge includes: a housing accommodating developing agent; a developing roller including a developing-roller shaft extending in a first direction; an electrode made of an electrically conductive resin; and a first collar made of an electrically non-conductive resin. The electrode is positioned at one end portion of the housing in the first direction. The electrode is electrically connected to the developing-roller shaft. The first collar covers one end portion of the developing-roller shaft in the first direction. The first collar includes: a first arm extending in the first direction; and a first pawl configured to engage with the electrode. The first pawl protrudes from the first arm in a direction away from the developing-roller shaft. The first pawl is movable between: a first position at which the first pawl is in engagement with the electrode; and a second position at which the first pawl is separated from the electrode.

Abstract: A cartridge includes: a housing; a storage medium including an electrical contact surface; and a storage medium holder holding the storage medium and movable relative to the housing. The storage medium holder is positioned at one end portion of the housing in a first direction and includes: a first holder holding the electrical contact surface; a second holder positioned spaced away from the first holder in a second direction crossing the first direction; and an elastic member expandable and shrinkable in the second direction between the first holder and the second holder. The first holder has a first hole penetrating the first holder in the second direction. The first hole is positioned farther from the housing in the first direction than the second holder and the elastic member are from the housing in the first direction and is overlapped with the electrical contact surface as viewed in the second direction.

Abstract: A developing cartridge includes: a casing; a developing roller extending in a first direction; a boss movable with the casing; and a first lever movable relative to the casing. The first lever includes: one end portion functioning as a point of effort; another end portion functioning as a point of load; a shaft functions as a fulcrum and positioned between the one end portion and the another end portion; and a first hole into which the boss is fitted. By the one end portion receiving a driving force, the first lever is pivotally movable about the shaft. A dimension of the first hole in a second direction crossing the first direction is greater than a dimension in the second direction of the boss. In a case where the casing moves in the second direction relative to the first lever, the boss moves in the second direction within the first hole.

Abstract: A cartridge includes: a housing; a storage medium; and a holder. The storage medium has an electrical contact surface. The holder is movable relative to the housing. The holder includes: a first holder member; and a second holder member. The first holder member has a pawl portion and is configured to hold the electrical contact surface. The second holder member includes a corner portion. The pawl portion is engageable with the corner portion. The second holder member has a through-hole. An engagement part of the pawl portion engaging with the corner portion is accessible from outside the second holder member through the through-hole in a state where the pawl portion engages with the corner portion.

Abstract: A developing cartridge includes: a developing roller rotatable about an axis extending in a first direction; a casing having a first outer surface and a second outer surface spaced apart from each other in the first direction; a first separation member positioned at the first outer surface; and a second separation member positioned at the second outer surface. The second separation member has a first end portion configured to contact a body-side cam of an image-forming apparatus. In a state where a drum cartridge is attached to an apparatus body of the image-forming apparatus in an attached state of the developing cartridge to the drum cartridge, the first separation member is pressed by a drum cam of the drum cartridge, and the first end portion of the second separation member is pressed by the body-side cam to move the developing roller from a contacting position to a separated position.

Abstract: A developing cartridge includes: a casing; a developing roller extending in a first direction; a boss movable with the casing; and a first lever movable relative to the casing. The first lever includes: one end portion functioning as a point of effort; another end portion functioning as a point of load; a shaft functions as a fulcrum and positioned between the one end portion and the another end portion; and a first hole into which the boss is fitted. By the one end portion receiving a driving force, the first lever is pivotally movable about the shaft. A dimension of the first hole in a second direction crossing the first direction is greater than a dimension in the second direction of the boss. In a case where the casing moves in the second direction relative to the first lever, the boss moves in the second direction within the first hole.

Abstract: A cartridge includes: a housing; a storage medium; and a holder. The storage medium has an electrical contact surface. The holder is movable relative to the housing. The holder includes: a first holder member; and a second holder member. The first holder member has a pawl portion and is configured to hold the electrical contact surface. The second holder member includes a corner portion. The pawl portion is engageable with the corner portion. The second holder member has a through-hole. An engagement part of the pawl portion engaging with the corner portion is accessible from outside the second holder member through the through-hole in a state where the pawl portion engages with the corner portion.

Abstract: A transfer belt unit includes a belt frame, a transfer belt, a storage element, an electrical contact surface, a pressing member, and a holder. The storage element stores therein information on the transfer belt. The electrical contact surface is electrically connected to the storage element. The pressing member presses the electrical contact surface in a pressing direction. The holder is positioned at the belt frame and holds the electrical contact surface. The holder is movable relative to the belt frame in a direction crossing the pressing direction.

Abstract: A cartridge includes: a housing; a storage medium; and a holder. The storage medium has an electrical contact surface. The holder is movable relative to the housing. The holder includes: a first holder member; and a second holder member. The first holder member has a pawl portion and is configured to hold the electrical contact surface. The second holder member includes a corner portion. The pawl portion is engageable with the corner portion. The second holder member has a through-hole. An engagement part of the pawl portion engaging with the corner portion is accessible from outside the second holder member through the through-hole in a state where the pawl portion engages with the corner portion.

Abstract: A developing cartridge includes: a casing; a developing roller extending in a first direction; a boss movable with the casing; and a first lever movable relative to the casing. The first lever includes: one end portion functioning as a point of effort; another end portion functioning as a point of load; a shaft functions as a fulcrum and positioned between the one end portion and the another end portion; and a first hole into which the boss is fitted. By the one end portion receiving a driving force, the first lever is pivotally movable about the shaft. A dimension of the first hole in a second direction crossing the first direction is greater than a dimension in the second direction of the boss. In a case where the casing moves in the second direction relative to the first lever, the boss moves in the second direction within the first hole.

Abstract: With an objective of obtaining a temperature control unit capable of highly uniform temperature control, provided is a temperature control unit (1) having a heat transfer medium introduction port (2) configured to introduce a heat transfer medium from outside, a temperature control mechanism (3) through which the heat transfer medium from the heat transfer medium introduction port (2) passes, and a heat transfer medium discharge port (4) configured to discharge the heat transfer medium from the temperature control mechanism (3) to outside, wherein: the temperature control mechanism (3) is provided with a porous metal body and a housing (5) configured to house the porous metal body; at least one main surface of the housing (5) is exposed to an outer side of the temperature control mechanism (3), and an inner side of the main surface contacts the porous metal body, thereby exchanging heat between the porous metal body and outside; and a heat transfer medium dispersion area (10) is provided between the heat tran

Abstract: Provided is a heat storage unit having a simple configuration, capable of being attached to various objects, and capable of efficiently performing heat exchange. The heat storage unit has at least one inorganic fiber member configured by binding or entangling flexible inorganic fibers and having a desired shape; and a heat storage material in contact with the inorganic fibers.

Abstract: A developing cartridge includes: a developing roller rotatable about an axis extending in a first direction; a casing having a first outer surface and a second outer surface spaced apart from each other in the first direction; a first separation member positioned at the first outer surface; and a second separation member positioned at the second outer surface. The second separation member has a first end portion configured to contact a body-side cam of an image-forming apparatus. In a state where a drum cartridge is attached to an apparatus body of the image-forming apparatus in an attached state of the developing cartridge to the drum cartridge, the first separation member is pressed by a drum cam of the drum cartridge, and the first end portion of the second separation member is pressed by the body-side cam to move the developing roller from a contacting position to a separated position.