Abstract: An inkjet printer includes: an inkjet head configured to eject an ink of an ultraviolet-curable type to a medium; an ultraviolet irradiator arranged to adjoin the inkjet head in a main scanning direction where the inkjet head relatively moves with respect to the medium, the ultraviolet irradiator configured to irradiate the ink with an ultraviolet ray; and a controller configured to control the ultraviolet irradiator. In the inkjet printer, the ultraviolet irradiator includes an inner illumination region arranged near the inkjet head in the main scanning direction, and an outer illumination region arranged opposite the inkjet head across the inner illumination region in the main scanning direction, and the controller includes a first irradiation mode where the inner illumination region is unlit and the outer illumination region is lit, and a second irradiation mode where the inner illumination region is lit and the outer illumination region is lit.

Abstract: A crimp portion provided to a damping force adjustable shock absorber includes a crimp groove portion provided on an outer peripheral surface of a solenoid case along a circumferential direction thereof, and one end portion of a thin wall portion of a valve case that is contained while being bent in this crimp groove portion. The crimp groove portion includes an inclined surface inclined into a case 40 from a valve case side toward a solenoid case side. Due to this configuration, the damping force adjustable shock absorber can securely fix the solenoid case and the valve case by crimping while reducing a load on a solenoid block and a valve block due to the crimp fixation to a minimum load.

Abstract: An inkjet printer includes: an inkjet head configured to eject an ink of an ultraviolet-curable type to a medium; an ultraviolet irradiator arranged to adjoin the inkjet head in a main scanning direction where the inkjet head relatively moves with respect to the medium, the ultraviolet irradiator configured to irradiate the ink with an ultraviolet ray; and a controller configured to control the ultraviolet irradiator. In the inkjet printer, the ultraviolet irradiator includes an inner illumination region arranged near the inkjet head in the main scanning direction, and an outer illumination region arranged opposite the inkjet head across the inner illumination region in the main scanning direction, and the controller includes a first irradiation mode where the inner illumination region is unlit and the outer illumination region is lit, and a second irradiation mode where the inner illumination region is lit and the outer illumination region is lit.

Abstract: A crimp portion provided to a damping force adjustable shock absorber includes a crimp groove portion provided on an outer peripheral surface of a solenoid case along a circumferential direction thereof, and one end portion of a thin wall portion of a valve case that is contained while being bent in this crimp groove portion. The crimp groove portion includes an inclined surface inclined into a case 40 from a valve case side toward a solenoid case side. Due to this configuration, the damping force adjustable shock absorber can securely fix the solenoid case and the valve case by crimping while reducing a load on a solenoid block and a valve block due to the crimp fixation to a minimum load.

Abstract: Provided are a damper configured such that the axial play between a coil case and a case member can be eliminated without increasing a size of a solenoid, and a method of assembling the damper. An O-ring (seal member) is elastically supported by a tapered hole formed in an inner peripheral surface of a case member and a tapered shaft formed in an outer peripheral surface of a coil case, and a retaining ring is configured to receive an axial force generated by the O-ring. The configuration enables the play between the coil case and the case member of the solenoid to be eliminated. A damping force regulation mechanism, and in turn the damper, may be made more compact in comparison with a case in which the O-ring is received by the opening side end face of the case member.

Abstract: A rocker arm includes a roller, a support shaft coaxially mounted in the roller, walls arranged along a rotation axis and having the roller therebetween and having through holes, respectively, through which end portions of the support shaft are inserted, and each of the walls having an inner surface opposite the roller, and holding members mounted in the respective walls. The holding member includes a tubular portion mounted in each through hole and disposed between an inner peripheral surface of the through hole and an outer surface of an end portion of the support shaft, a first stopper portion included at a first end of the tubular portion to be in contact with the inner surface of one of the walls, and a second stopper portion included at a second end of the tubular portion to be in contact with an end surface of one of the end portions.

Abstract: A lifter rotation preventing structure includes a lifter body, a retainer and a biasing member. The lifter body is inserted into a sliding hole of a housing and reciprocated according to rotation of a cam. The lifter body has a peripheral wall slidable in a sliding hole and a partition wall partitioning an inside of the peripheral wall into a first space where the cam is located and a second space located opposite the first space. The retainer has a retainer body connected to an engaging member and a rotation preventing protrusion protruding from an outer periphery of the retainer body and fittingly extending through the peripheral wall. The rotation preventing protrusion has a distal end moved into a rotation preventing groove to prevent the lifter body from rotation. The biasing member interposed between the retainer body and the housing to bias the lifter body to the cam side.

Abstract: A lifter structure includes a cylindrical member configured to be reciprocally slid in a guide hole of a lifter guide according to rotation of a cam and having an engagement groove and a rotation-preventing member which is separate from the cylindrical member and is disposed so as to face an interior of the guide hole. The rotation-preventing member is inserted into the engagement groove to abut against a groove edge of the engagement groove in a rotation direction of the cylindrical member, thereby preventing the cylindrical member from rotation in the guide hole.

Abstract: Provided are a damper configured such that the axial play between a coil case and a case member can be eliminated without increasing a size of a solenoid, and a method of assembling the damper. An O-ring (seal member) is elastically supported by a tapered hole formed in an inner peripheral surface of a case member and a tapered shah formed in an outer peripheral surface of a coil case, and a retaining ring is configured to receive an axial force generated by the O-ring. The configuration enables the play between the coil case and the case member of the solenoid to be eliminated. A damping force regulation mechanism, and in turn the damper, may be made more compact in comparison with a case in which the O-ring is received by the opening side end face of the case member.

Abstract: A lifter includes a roller caused to abut against a cam thereby to be pressed and a lifter body rotatably supporting the roller and housed in a guide hole of a lifter guide so as to be reciprocable in the guide hole. The lifter body includes a cylindrical part and a rotation stopper. The cylindrical part has an outer periphery formed into a cylindrical shape such that the outer periphery is slidable on an inner periphery of the guide hole. The cylindrical part has one of two axial ends, the one end being formed with a skirt covering the roller. The rotation stopper is formed to protrude outward from the other axial end of the cylindrical part, the other axial end being located opposite a side where the skirt is located. The rotation stopper prevents the lifter body from being rotated about an axis thereof relative to the lifter guide.

Abstract: A rocker arm includes a roller, a support shaft coaxially mounted in the roller, walls arranged along a rotation axis and having the roller therebetween and having through holes, respectively, through which end portions of the support shaft are inserted, and each of the walls having an inner surface opposite the roller, and holding members mounted in the respective walls. The holding member includes a tubular portion mounted in each through hole and disposed between an inner peripheral surface of the through hole and an outer surface of an end portion of the support shaft, a first stopper portion included at a first end of the tubular portion to be in contact with the inner surface of one of the walls, and a second stopper portion included at a second end of the tubular portion to be in contact with an end surface of one of the end portions.

Abstract: A lifter includes a roller caused to abut against a cam thereby to be pressed and a lifter body rotatably supporting the roller and housed in a guide hole of a lifter guide so as to be reciprocable in the guide hole. The lifter body includes a cylindrical part and a rotation stopper. The cylindrical part has an outer periphery formed into a cylindrical shape such that the outer periphery is slidable on an inner periphery of the guide hole. The cylindrical part has one of two axial ends, the one end being formed with a skirt covering the roller. The rotation stopper is formed to protrude outward from the other axial end of the cylindrical part, the other axial end being located opposite a side where the skirt is located. The rotation stopper prevents the lifter body from being rotated about an axis thereof relative to the lifter guide.

Abstract: A lifter rotation preventing structure includes a lifter body, a retainer and a biasing member. The lifter body is inserted into a sliding hole of a housing and reciprocated according to rotation of a cam. The lifter body has a peripheral wall slidable in a sliding hole and a partition wall partitioning an inside of the peripheral wall into a first space where the cam is located and a second space located opposite the first space. The retainer has a retainer body connected to an engaging member and a rotation preventing protrusion protruding from an outer periphery of the retainer body and fittingly extending through the peripheral wall. The rotation preventing protrusion has a distal end moved into a rotation preventing groove to prevent the lifter body from rotation. The biasing member interposed between the retainer body and the housing to bias the lifter body to the cam side.

Abstract: A lifter structure includes a cylindrical member configured to be reciprocally slid in a guide hole of a lifter guide according to rotation of a cam and having an engagement groove and a rotation-preventing member which is separate from the cylindrical member and is disposed so as to face an interior of the guide hole. The rotation-preventing member is inserted into the engagement groove to abut against a groove edge of the engagement groove in a rotation direction of the cylindrical member, thereby preventing the cylindrical member from rotation in the guide hole.