| 摘要 |
Abstract A spraying device is described, the device comprising a refill of fluid therein, wherein the refill comprises a body forming a reservoir for the fluid and a spray head located at the uppermost part of the refill in fluid communication with the reservoir, and wherein the device comprises a housing adapted to receive the refill therein and having an aperture suitable for permitting, in use, the spraying of the fluid from an exit orifice of the spray head therethrough, the device further comprising actuation means configured for periodic actuation of the refill, wherein the device is provided with detection means configured, in use, to interrogate the spray head to distinguish between at least one area of lower reflectance and at least one area of relatively higher reflectance on the spray head of said refill, wherein the spray head is provided with at least one portion shaped to substantially reflect the detection means interrogation back toward said means and is provided with at least one portion shaped to substantially deflect the detector means interrogation away from said means. Methods of operation of such a spraying device are also described. Fig. 3 ,35 22-/ 35-/ - -~- 42 |
