초록 ▼

A road marking device comprises: a tubular, bottomed casing which has an open top end; a cover mounted over an opening in the casing and having a window; a self-luminous marking system composed of a condenser housed in the casing, an illuminant which emits light by receiving a power supplied from th

A road marking device comprises: a tubular, bottomed casing which has an open top end; a cover mounted over an opening in the casing and having a window; a self-luminous marking system composed of a condenser housed in the casing, an illuminant which emits light by receiving a power supplied from the condenser, and a circuit for driving the illuminant; and a transparent element which transmits and outwardly radiates the light emitted from the illuminant. The transparent element is fixed between the cover and the casing which cooperatively hold a periphery of the transparent element, with a part of the transparent element protruding outwardly from the window in the cover. In a self-luminous marking system, an LED is utilized without application of voltage so as to detect the quantity of light in the road environment and to generate an electromotive force in response to an incident light. Based on the electromotive force generated by this LED, the drive of a display LED is controlled.

대표청구항 ▼

A road marking device comprises: a tubular, bottomed casing which has an open top end; a cover mounted over an opening in the casing and having a window; a self-luminous marking system composed of a condenser housed in the casing, an illuminant which emits light by receiving a power supplied from th

A road marking device comprises: a tubular, bottomed casing which has an open top end; a cover mounted over an opening in the casing and having a window; a self-luminous marking system composed of a condenser housed in the casing, an illuminant which emits light by receiving a power supplied from the condenser, and a circuit for driving the illuminant; and a transparent element which transmits and outwardly radiates the light emitted from the illuminant. The transparent element is fixed between the cover and the casing which cooperatively hold a periphery of the transparent element, with a part of the transparent element protruding outwardly from the window in the cover. In a self-luminous marking system, an LED is utilized without application of voltage so as to detect the quantity of light in the road environment and to generate an electromotive force in response to an incident light. Based on the electromotive force generated by this LED, the drive of a display LED is controlled. ductor body in a simple, rapid and accurate manner. The measured value of the temperature may be directly evaluated by means of an electronic signal processing operation, for example, in an apparatus for performing the pre-measurement. within the range of saturations for each of the plurality of colorants at which the total response for each of the plurality of reflectance sensors is at least substantially identical comprises selecting a first saturation within the range of saturations for the first colorant and a second saturation for the second colorant at which the spectral response for each of the plurality of reflectance sensors is at least substantially identical.11. The method of claim 8, wherein the drop volume compensation is subsequently performed by performing a method comprising:generating a reference pattern on a media of the reference color at a selected saturation with the second colorant source;generating a pattern on the media of the reference color at each of a range of saturations with the first colorant source;detecting a response of the one of the plurality of reflectance sensors to the reference pattern;detecting a response of the one of the plurality of reflectance sensors to the pattern at each of the range of saturations;determining a matching saturation within the range of saturations at which the response of the one of the plurality of reflectance sensors to the pattern is at least substantially identical to the response of the one of the plurality of reflectance sensors to the reference pattern; and,calibrating the first colorant source to the second colorant source based on the matching saturation.12. The method of claim 11, wherein the method for performing the drop volume compensation further comprises:generating a spit pattern to clean the first colorant source and the second colorant source; and,generating guard patterns to shield the reference pattern and the pattern at each of the range of saturations from spurious light.13. The method of claim 8, wherein the plurality of colorants comprises a plurality of inks and each of the first colorant source and the second colorant source comprises one or more inkjet ejectors.14. The method of claim 8, wherein the plurality of colorants comprises at least one cyan colorant, at least one magenta colorant, and at least one yellow colorant.15. A computer-readable medium having a computer program stored thereon comprising: first means for printing a pattern of a predetermined mixture of a plurality of colorants that results in at least a substantially identical response from each of a plurality of reflectance sensors having different illuminate spectral emission profiles; and,second means for performing drop volume compensation to color balance a first colorant source to a second colorant source utilizing the pattern of the predetermined mixture of the plurality of colorants and one of the plurality of reflectance sensors,such that the drop volume compensation is at least substantial