Abstract: An inkjet ink contains a quinacridone pigment, a pigment dispersion resin, and an aqueous medium. The pigment dispersion resin includes an adsorption resin adsorbed to the quinacridone pigment and a non-adsorption resin not adsorbed to the quinacridone pigment. The non-adsorption resin has a percentage content in the pigment dispersion resin of at least 20% by mass and no greater than 50% by mass. A supernatant obtained by centrifugation of the inkjet ink at 1,050,000 G for 3 hours has a phosphorous concentration of at least 1.0 ppm and no greater than 6.0 ppm. The supernatant has a sulfur concentration of at least 1.0 ppm and no greater than 6.0 ppm.

Abstract: An inkjet ink has a volume reduction rate ?V calculated using formula (1) “?V=100×(V0?V22)/V0” of at least 25% and no greater than 45%. In the formula (1), V0 represents a first volume of a liquid droplet of the inkjet ink at landing, on a non-absorbent recording medium, of the inkjet ink dropped onto the non-absorbent recording medium. V22 represents a second volume of the liquid droplet when 22 seconds elapse from the landing of the liquid droplet on the non-absorbent recording medium.

Abstract: The ink container includes an ink pack, a paper case and a cover. The ink pack is configured to store ink. The paper case is configured to store the ink pack and to have a shape elongated in one direction. The cover is bonded to an end portion in the one direction of the case. A protection rib is protruded on an outer circumferential face of the cover. The protection rib covers, from an outside in the one direction, a bonded portion of the end portion of the case and the cover.

Abstract: The ink container includes an ink pack, a paper case and a cover. The ink pack is configured to store ink. The paper case is configured to store the ink pack and to have a shape elongated in one direction. The cover is bonded to an end portion in the one direction of the case. A protection rib is protruded on an outer circumferential face of the cover. The protection rib covers, from an outside in the one direction, a bonded portion of the end portion of the case and the cover.

Abstract: The supply liquid tank unit of the disclosure includes a supply liquid tank, and a detection sensor. The detection sensor detects a liquid level of liquid in the supply liquid tank. The supply liquid tank includes a first chamber provided with an inflow port, a second chamber provided with an outflow port, a partition wall for partitioning the first chamber and the second chamber from each other, and a lower communicating path which is formed from a lower end of the partition wall and a lower surface of the supply liquid tank and which makes the first chamber and the second chamber communicating with each other. The detection sensor detects a liquid level of the liquid in the second chamber and is placed above the lower end of the partition wall.

Abstract: A toner case includes a toner storage portion, a cylindrical portion, a shutter member, and a biasing member. The cylindrical portion has an interior space and communicated with the interior of the toner storage portion through a toner discharge port. An opening is formed at one of opposite ends of the interior space, and a closing wall is formed at the other of the opposite ends of the interior space. The shutter member is supported so as to be slidable in an extension direction of the cylindrical portion, and is movable between a closing position and an opening position. The shutter member at the closing position closes the toner discharge port, and the shutter member at the opening position opens the toner discharge port. The biasing member configured to position the shutter member to the closing position by applying a biasing force to the shutter member.

Abstract: The supply liquid tank unit of the disclosure includes a supply liquid tank, and a detection sensor. The detection sensor detects a liquid level of liquid in the supply liquid tank. The supply liquid tank includes a first chamber provided with an inflow port, a second chamber provided with an outflow port, a partition wall for partitioning the first chamber and the second chamber from each other, and a lower communicating path which is formed from a lower end of the partition wall and a lower surface of the supply liquid tank and which makes the first chamber and the second chamber communicating with each other. The detection sensor detects a liquid level of the liquid in the second chamber and is placed above the lower end of the partition wall.

Abstract: A developer case (10) according to the present invention includes a case main body (30) and an RF tag (36, 37). The case main body (30) contains developer and is attached to an apparatus main body (2, 71) which includes a communication device (14). The RF tag (36, 37) is arranged at the case main body (30) and makes wireless communication with the communication device (14) within a communicable area (A1, A2) around the communication device (14). The case main body (30) includes a plurality of attachment parts (41a, 41b) opposed to the communication device (14) in a state where the case main body (30) is attached to the apparatus main body (2, 71). The RF tag (36, 37) is arranged at one of the plurality of attachment parts (41a, 41b) according to the communicable area (A1, A2) unique to the RF tag (36, 37).

Abstract: A toner case includes a toner storage portion, a cylindrical portion, a shutter member, and a biasing member. The cylindrical portion has an interior space and communicated with the interior of the toner storage portion through a toner discharge port. An opening is formed at one of opposite ends of the interior space, and a closing wall is formed at the other of the opposite ends of the interior space. The shutter member is supported so as to be slidable in an extension direction of the cylindrical portion, and is movable between a closing position and an opening position. The shutter member at the closing position closes the toner discharge port, and the shutter member at the opening position opens the toner discharge port. The biasing member configured to position the shutter member to the closing position by applying a biasing force to the shutter member.

Abstract: A developer case (10) according to the present invention includes a case main body (30), a rotator (55, 56), a coupling (57), and a holder (49, 70, 80, 90). The case main body (30) contains developer. The rotator (55, 56) is rotatably arranged between a pair of sidewalls (43F, 43B) of the case main body (30). The pair of sidewalls (43F, 43B) are opposed to each other. The coupling (57) is coupled to the rotator (55, 56) with at least one of the pair of sidewalls (43F, 43B) in between. The holder (49, 70, 80, 90) protrudes on an inner face of at least the one of the pair of sidewalls (43F, 43B) and holds an end in an axis direction of the rotator (55, 56) at a position where the end is capable of coupling to the coupling (57).

Abstract: A developer case (10) according to the present invention includes a case main body (30), a conveyer (33), a first tube (34), and a second tube (35). The case main body (30) contains developer and has a discharge port (30a) to discharge the developer toward an outside of the case main body (30). The conveyer (33) conveys the developer in the case main body (30) toward the discharge port (30a). The first tube (34) is arranged in the case main body (30) so as to cover the discharge port (30a). The second tube (35) communicates with an inside of the first tube (34) at a downstream side of the discharge port (30a) in a conveying direction of the developer and extends in a direction crossing to the conveying direction.

Abstract: A developer case (10) according to the present invention includes a case main body (30) and an RF tag (36, 37). The case main body (30) contains developer and is attached to an apparatus main body (2, 71) which includes a communication device (14). The RF tag (36, 37) is arranged at the case main body (30) and makes wireless communication with the communication device (14) within a communicable area (A1, A2) around the communication device (14). The case main body (30) includes a plurality of attachment parts (41a, 41b) opposed to the communication device (14) in a state where the case main body (30) is attached to the apparatus main body (2, 71). The RF tag (36, 37) is arranged at one of the plurality of attachment parts (41a, 41b) according to the communicable area (A1, A2) unique to the RF tag (36, 37).

Abstract: A developer case (10) according to the present invention includes a case main body (30), a rotator (55, 56), a coupling (57), and a holder (49, 70, 80, 90). The case main body (30) contains developer. The rotator (55, 56) is rotatably arranged between a pair of sidewalls (43F, 43B) of the case main body (30). The pair of sidewalls (43F, 43B) are opposed to each other. The coupling (57) is coupled to the rotator (55, 56) with at least one of the pair of sidewalls (43F, 43B) in between. The holder (49, 70, 80, 90) protrudes on an inner face of at least the one of the pair of sidewalls (43F, 43B) and holds an end in an axis direction of the rotator (55, 56) at a position where the end is capable of coupling to the coupling (57).

Abstract: A developer case (10) according to the present invention includes a case main body (30), a conveyer (33), a first tube (34), and a second tube (35). The case main body (30) contains developer and has a discharge port (30a) to discharge the developer toward an outside of the case main body (30). The conveyer (33) conveys the developer in the case main body (30) toward the discharge port (30a). The first tube (34) is arranged in the case main body (30) so as to cover the discharge port (30a). The second tube (35) communicates with an inside of the first tube (34) at a downstream side of the discharge port (30a) in a conveying direction of the developer and extends in a direction crossing to the conveying direction.

Abstract: In a toner case attachable to and detachable from a case storage portion of an image forming apparatus, a case main body is long in an attachment direction with respect to the case storage portion, and includes lower and upper housings defining lower and upper spaces among its inner space. Rims of upper-surface opening of the lower housing and lower-surface opening of the upper housing are joined together. A ceiling surface of the case storage portion is inclined diagonally upward from upper end of one side wall of the case storage portion toward the other opposite side wall in the width direction. The upper housing includes an inclined portion inclined corresponding to the inclined surface. When the case main body is attached to the case storage portion, the joint portion of the lower and upper housings has approximately the same height as the upper end of the side wall.

Abstract: In a toner case attachable to and detachable from a case storage portion of an image forming apparatus, a case main body is long in an attachment direction with respect to the case storage portion, and includes lower and upper housings defining lower and upper spaces among its inner space. Rims of upper-surface opening of the lower housing and lower-surface opening of the upper housing are joined together. A ceiling surface of the case storage portion is inclined diagonally upward from upper end of one side wall of the case storage portion toward the other opposite side wall in the width direction. The upper housing includes an inclined portion inclined corresponding to the inclined surface. When the case main body is attached to the case storage portion, the joint portion of the lower and upper housings has approximately the same height as the upper end of the side wall.