摘要:
An optical scanner includes a light source including a laser diode for emitting a laser beam, and an optical deflector such as a rotary polygonal mirror for deflecting the laser beam to thereby produce a scanning laser beam. The laser diode is protected from being overheated by arranging the light source in a heat insulating chamber or by cooling the light source with the air flow circulated by the rotation of the rotary polygonal mirror in cooperation with a curved guide plate.
摘要:
An article detection device includes: a light emission unit for emitting a detection light for irradiation onto an article, and a light reception unit for receiving a light reflected from the article. The article detection device also includes; an analog-to-digital converter for converting the reflected light to a digital signal, a first register for storing the digital signal after being sampled using a first sampling signal having a first period, and a second register for storing the digital signal after being sampled using a second sampling signal having a second period shorter than the first period. The article detection device further includes a control unit for generating the first and second sampling signals to be sent to the first and second registers, reading the digital signal stored in the first and second registers, calculating a difference between the digital signals in the first register and second register, comparing an absolute value of the difference with a predetermined threshold value, and detecting the article when the absolute value is larger than the threshold value.
摘要:
A secure software execution mechanism appropriate for software circulation is provided. At a sender site 312, an executable file 332 and a data file 334 processed by the executable file are encapsulated. The remaining two files 336 and 338 do not physically exist in a pot 320 at the sender site, and an archive file 320 is transferred to a receiver site 314. At the receiver site 314, intangible files 336 and 338 within a pot may be mapped to a file 354 in a local file system or a file 356 within another pot 350 and processed using a file 334 in a pot or the mapped file 354 or 356 by executing a program 332, in conformity with the specification of a security policy 340.
摘要:
A compact type bar code reader for detecting a bar code symbol provided on a surface of an article. The bar code reader includes a laser beam generation unit for generating the laser beam to be irradiated onto a bar code symbol, and a focus unit for determining a focus of the laser beam, and a scanning pattern forming unit for forming various scanning patterns of the laser beam. The bar code reader also includes a light reflection unit for reflecting the laser beam to and from the bar code symbol, a light collection unit for collecting the laser beam reflected from the bar code symbol, and a light reception unit for receiving the laser beam collected by the light collection unit, and converting it to an electrical signal. The above units are included in a casing so that the laser beam generation unit, the focus unit, the light collection unit, and the light reception unit are arranged at a lower portion of the casing, and the scanning pattern forming unit and light reception unit are arranged at a lower portion of the casing. The light path of the laser beam is formed in such a way that an emitted light path from the laser beam generation unit to the bar code symbol becomes considerably long, and a reflected light path from the bar code symbol to the light reception unit becomes shorter than the emitted light path.
摘要:
An ink feeder comprises a plurality of ink tanks for storing inks and wetting water, disposed in a transverse direction of an ink fountain roller, a vane wheel disposed at the bottom of an ink tank, an ink pump for feeding ink, an ink feed blade for adjusting the quantity of ink supplied from the ink pump to the ink fountain roller to a constant value, and a coupling for transmitting the driving force of a single motor to the vane wheel and the ink pump provided to each ink tank. The ink tanks, the ink pump, the ink feed nozzle, the ink feed pipe and the ink feed blade mechanism may be built into one unit, and this unit can be fitted to and removed from the main body of the printing press. The ink feeder may be equipped with an ink scraper comprising scraped ink separators arranged parallel in the axial direction of the scraping doctor support device. Each of the scraped ink separators may include an ink guide plate for guiding the ink scraped from the surface of the doctor roller, provided at the bottom, and color mixture preventive walls for preventing mixture of adjacent inks, provided on both sides of the guide plate.
摘要:
This invention relates to a method of high sensitivity luminescence analysis using, as an enhancer, 2-hydroxy-9-fluorenone, the compound expressed by the following formula ##STR1## or an oxazole compound expressed by the formula ##STR2## in the formula R.sub.1 representing hydrogen, C.sub.n H.sub.2n+1 (here, n representing a positive integer of 1 to 4), XC.sub.n H.sub.2n (here, X representing F, Cl, Br or I, and n representing a positive integer of 1 to 4), C.sub.n H.sub.2n+1 CO.sub.2 (n being as defined above), a phenyl group, a naphthyl group, C.sub.n H.sub.2n+1 C.sub.6 H.sub.4 (n being as defined above), YC.sub.6 H.sub.4 (Y representing F, Cl, Br, I or a phenyl group) or XYC.sub.6 H.sub.3 (X and Y being as defined above).
摘要:
A secure software execution mechanism appropriate for software circulation is provided. At a sender site 312, an executable file 332 and a data file 334 processed by the executable file are encapsulated. The remaining two files 336 and 338 do not physically exist in a pot 320 at the sender site, and an archive file 320 is transferred to a receiver site 314. At the receiver site 314, intangible files 336 and 338 within a pot may be mapped to a file 354 in a local file system or a file 356 within another pot 350 and processed using a file 334 in a pot or the mapped file 354 or 356 by executing a program 332, in conformity with the specification of a security policy 340.
摘要:
A semiconductor laser driving circuit has a semiconductor laser for emitting a laser beam according to a drive power. A photodetector is provided for effecting photo-electric conversion of the laser beam to output a corresponding electric signal. A monitoring circuit is connected for monitoring the electric signal to output a monitor signal indicative of variation in intensity of the laser beam. A controlling circuit is connected for comparing the monitor signal with a given reference signal to output a control signal according to difference therebetween. A powering circuit is operative according to the control signal to apply to the semiconductor laser a drive power effective to eliminate the difference. An abnormality detecting circuit is provided for comparing the monitor signal with a given limit signal which is set different from the reference signal to detect abnormality to output an abnormality signal.