Abstract: A printing apparatus includes a rotary drum that is provided with a cylindrical body, a rotary shaft, and arm portions, an ejecting unit, a first cooling fan that uses a section formed in the circumferential direction between the arm portions as a passageway of air and that supplies the air, and a first air guide member that is retrofitted to the passageway of the air. The first air guide member is provided with a number a of first guides, a being an integer of 2 or more. The number a of the first guides are configured to guide the air from the first cooling fan to regions that are different positions of the inner surface of the cylindrical body and that are obtained by dividing up the inner surface of the cylindrical body by the number a in the direction along the rotary shaft.

Abstract: An auxiliary member is an auxiliary member that assists in mounting a roll body, which is formed by winding a sheet into a roll shape on a core tube, onto a shaft of a printing apparatus. The auxiliary member includes a cylindrical main body insertable into the core tube, a laser irradiation unit that irradiates laser light from a leading end surface of the main body, and a switch that switches between irradiation and stopping of the laser light from the laser irradiation unit.

Abstract: A duckbill valve is disclosed that stably operates for a long time even when high pressure is applied to fluid. The duckbill valve includes a first flow path formation part including a first flow path and a second flow path formation part including a second flow path having a width increasing gradually toward the first flow path formation part. The second flow path formation part has a slit formed at a tip end part, and the second flow path communicates with a downstream flow path FP2 when the slit is opened. The communication between the second flow path and the downstream flow path is blocked when the slit is closed. The first wall part and the second wall part do not make contact with each other when the pressure difference of the second flow path with respect to the pressure of the downstream flow path FP2 is ?75 kPa.

Abstract: A printing apparatus includes a rotary drum that is provided with a cylindrical body, a rotary shaft, and arm portions, an ejecting unit, a first cooling fan that uses a section formed in the circumferential direction between the arm portions as a passageway of air and that supplies the air, and a first air guide member that is retrofitted to the passageway of the air. The first air guide member is provided with a number a of first guides, a being an integer of 2 or more. The number a of the first guides are configured to guide the air from the first cooling fan to regions that are different positions of the inner surface of the cylindrical body and that are obtained by dividing up the inner surface of the cylindrical body by the number a in the direction along the rotary shaft.

Abstract: An auxiliary member is an auxiliary member that assists in mounting a roll body, which is formed by winding a sheet into a roll shape on a core tube, onto a shaft of a printing apparatus. The auxiliary member includes a cylindrical main body insertable into the core tube, a laser irradiation unit that irradiates laser light from a leading end surface of the main body, and a switch that switches between irradiation and stopping of the laser light from the laser irradiation unit.

Abstract: This printing apparatus is provided with a discharge head, a movement unit for moving a recording medium in a prescribed direction relative to the discharge head, a support member for supporting the recording medium in a position of facing the discharge head, a light-emitting unit for emitting light downstream in the prescribed direction from the discharge head, a first opposing unit disposed between the discharge head and the light-emitting unit in the prescribed direction, a second opposing unit disposed downstream of the discharge head in the prescribed direction, and an optically transparent member that is disposed between the first opposing unit and the second opposing unit and that covers the light-emitting unit from the support member.

Abstract: This printing apparatus is provided with a discharge head, a movement unit for moving a recording medium in a prescribed direction relative to the discharge head, a support member for supporting the recording medium in a position of facing the discharge head, a light-emitting unit for emitting light downstream in the prescribed direction from the discharge head, a first opposing unit disposed between the discharge head and the light-emitting unit in the prescribed direction, a second opposing unit disposed downstream of the discharge head in the prescribed direction, and an optically transparent member that is disposed between the first opposing unit and the second opposing unit and that covers the light-emitting unit from the support member.

Abstract: Provided is a check valve including: a duckbill valve; and a support member which is inserted into an inside portion of the duckbill valve, in which the duckbill valve includes a slit which is provided on a side where fluid is discharged, an inflow port which is provided on a side where the fluid flows in, and a flow path which connects the inflow port to the slit, and in which the support member is inserted into the flow path from the inflow port, a hole for sending the fluid to the slit when flowing in from the inflow port is provided, and the hole is provided so as to be hermetically sealed by the duckbill valve when a negative pressure is applied from the inflow port side.

Abstract: Provided is a check valve including: a duckbill valve; and a support member which is inserted into an inside portion of the duckbill valve, in which the duckbill valve includes a slit which is provided on a side where fluid is discharged, an inflow port which is provided on a side where the fluid flows in, and a flow path which connects the inflow port to the slit, and in which the support member is inserted into the flow path from the inflow port, a hole for sending the fluid to the slit when flowing in from the inflow port is provided, and the hole is provided so as to be hermetically sealed by the duckbill valve when a negative pressure is applied from the inflow port side.

Abstract: A cleaning liquid supplying apparatus includes a first storage section, a pressure-accumulating second storage section, a plurality of cleaning liquid ejecting sections, a liquid sending section, a plurality of individual flow channel opening/closing sections, and a control section. The first storage section stores cleaning liquid. The cleaning liquid ejecting sections are connected to the second storage section via a plurality of individual flow channels having upstream ends located at positions where the upstream ends are open to a liquid reservoir when a predetermined amount of the cleaning liquid is stored in the second storage section. The liquid sending section is provided midway along a first flow channel and sends the cleaning liquid in the first storage section to the second storage section. The individual flow channel opening/closing sections open/close the respective individual flow channels.

Abstract: A cleaning liquid supplying apparatus includes a first storage section, a pressure-accumulating second storage section, a plurality of cleaning liquid ejecting sections, a liquid sending section, a plurality of individual flow channel opening/closing sections, and a control section. The first storage section stores cleaning liquid. The cleaning liquid ejecting sections are connected to the second storage section via a plurality of individual flow channels having upstream ends located at positions where the upstream ends are open to a liquid reservoir when a predetermined amount of the cleaning liquid is stored in the second storage section. The liquid sending section is provided midway along a first flow channel and sends the cleaning liquid in the first storage section to the second storage section. The individual flow channel opening/closing sections open/close the respective individual flow channels.

Abstract: An image recording medium includes a base member having an image recording face on which an image is recorded, and a holding member which is operable to hold the base member at an angle of predetermined degree with respect to an installation face for the base member.

Abstract: A transferring tray for a printing apparatus for printing on one major surface of a recording media having disc shape, wherein the printing apparatus includes, a carriage having a printing head, reciprocating in a main scanning direction, a transferring unit transferring the recording media in a sub scanning direction, a detecting unit detecting the recording media being transferred by the transferring unit, and a recording unit printing on the one major surface of the recording media, the transferring tray including: a tray body having a rectangular plate shape made of a material which is not detected by the detecting unit; a detected portion formed on either one of two major surfaces of the tray body, being detectable by the detecting unit; and a mounting portion having a mounting recess such that the one major surface of the recording media comes up to substantially same level as one of the major surfaces of the tray body when the recording media is mounted on the transferring tray.

Abstract: An image recording medium includes a base member having an image recording face on which an image is recorded, and a holding member which is operable to hold the base member at an angle of predetermined degree with respect to an installation face for the base member.

Abstract: An ink jet recording apparatus includes a paper gap switching portion for switching paper gaps by moving a recording head, a pressing-force adjustment portion for applying a pressure to a following roller and releasing the pressure from the following roller so as to adjust a pressing force applied to a recording medium, and an operation member for controlling a driving operation of the paper gap switching portion and a driving operation for the pressing-force adjustment portion.

Abstract: The object is to provide a technique whereby a non-operating nozzle can be detected with higher accuracy. The present invention resides in a printer for printing images by ejecting ink droplets from a plurality of nozzles, wherein an optical path in which light from a light-emitting element 40a for emitting light is focused by a first focusing element 41, allowed to pass through a focusing aperture 43a that is substantially circular and smaller than the area illuminate by the light, and transmitted through the focusing aperture 43a to a light-receiving element 40b for receiving light is laid out according to a configuration in which an intersection is formed with the path described by the ink droplets ejected by the nozzles. The light-emitting element 40a is energized and caused to emit light.

Abstract: A fulcrum shaft 61 and a recessed sheet member 64, which together constitute an ejected paper receiving unit that is rotatable force forward and backward within a range extending from a front receiving position and a rear receiving position. When an operator rotates the ejected paper receiving unit 6 forward and sets it at the front receiving position, a print sheet that is ejected by a paper ejection unit 4 is accepted while sliding forward along the sheet member 64. And when the operator rotates the ejected paper receiving unit 6 to the rear and sets it at the rear receiving position, a print sheet ejected by the paper ejection unit 4 is accepted while sliding to the rear along the sheet member 64.

Abstract: A transport roller 32 has high rigidity and the surface supported at its center portion thereof is formed as a low-friction surface 32a by the polish finishing process and the surface thereof except for the low-friction surface is formed as a high-friction surface 32b by the ceramic coating process. The driven roller 33 is disposed so as to oppose to the low-friction surface in a manner that the surface thereof extends over the boundary of the low-friction surface 32a and the high-friction surface 32b. The driven roller 33 may be disposed in a manner that the surface thereof extends over the entire width of the low-friction surface 32a.

Abstract: The object is to provide a technique whereby a non-operating nozzle can be detected with higher accuracy. The present invention resides in a printer for printing images by ejecting ink droplets from a plurality of nozzles, wherein an optical path in which light from a light-emitting element 40a for emitting light is focused by a first focusing element 41, allowed to pass through a focusing aperture 43a that is smaller than the area illuminate by the light, and transmitted through the focusing aperture 43a to a light-receiving element 40b for receiving light is laid out according to a configuration in which an intersection is formed with the path described by the ink droplets ejected by the nozzles. The light-emitting element 40a is energized and caused to emit light.

Abstract: The object is to provide a technique whereby a non-operating nozzle can be detected with higher accuracy. The present invention resides in a printer for printing images by ejecting ink droplets from a plurality of nozzles, wherein an optical path in which light from a light-emitting element 40a for emitting light is focused by a first focusing element 41, allowed to pass through a focusing aperture 43a that is substantially circular and smaller than the area illuminate by the light, and transmitted through the focusing aperture 43a to a light-receiving element 40b for receiving light is laid out according to a configuration in which an intersection is formed with the path described by the ink droplets ejected by the nozzles. The light-emitting element 40a is energized and caused to emit light.