摘要:
An apparatus for determining attitude of a satellite by using a star sensor includes a ground terminal equipped with a data processing unit and star catalogue, a star sensor, an estimating the unit for estimating attitude of the satellite and a decision unit for deciding the attitude determination mode I or II in dependence on attitude stability of the satellite. In the mode I, angles representative of the satellite attitude are estimated by the estimating unit on the basis of a star sub-catalogue prepared by utilizing a priori information. In the mode II, the attitude angles are estimated by the data processing unit through data transaction with the ground terminal without resorting to the use of the priori information.
摘要:
There is an attitude control method and system for a satellite. This system comprises a star catalogue of the universe, a star sensor and means for calculating features on the surface of the star sensor from a signal detected by the star sensor. The calculated features are compared with a table of which the star catalogue was reconstituted so as to easily search the features, thereby determining the attitude of the satellite.
摘要:
An image recording apparatus is disclosed wherein an image is recorded on a recording medium based on image information by ejecting liquid droplets from a liquid droplet ejecting head. A liquid droplet ejecting head is provided which has an ejection region substantially corresponding to a width of the recording medium. A conveyor unit is provided which conveys the recording medium to the ejection region of the liquid droplet ejecting head with the recording medium attracted and attached thereto and supported thereon. The recording medium is fed from the conveyor unit to a paper discharge section. Further, a plurality of attracting and supporting sub-units are provided which are vertically moved with the recording medium, which is delivered thereto from the conveyor unit, attracted and attached thereto and supported thereon, thereby conveying the recording medium to a subsequent step.
摘要:
There is provided a liquid droplet discharging device including: a liquid droplet discharging head, for discharging liquid droplets; an opposing member, opposing the liquid droplet discharging head; and a blade, cleaning the opposing member and in contact with the opposing member, a plurality of grooves being formed on the blade, and the grooves having a groove width increasing from a bottom portion thereof to an opening portion thereof, and a groove angle decreasing from the side of the opposing member to the side opposite to the opposing member.
摘要:
An image recording device includes plural retaining units each of which retains a recording medium on circumference thereof, a printing head that forms an image on the recording medium, a loop unit that retains the plural retaining units on a closed path, a first driving unit that drives each of the plural retaining units, and a second driving unit that conveys the retaining units on the loop unit, wherein when the first driving unit drives one of the plural retaining units to form an image on a first recording medium retained on circumference thereof, the first driving unit drives another one of the retaining units to mount a second recording medium on circumference thereof, and the second driving unit conveys one of the retaining units to a recording medium peeling position after completing image formation, and another one of the retaining units to a printing position.
摘要:
A recording apparatus includes a transport unit that conveys a recording medium and a recording head unit that records an image on the recording medium conveyed by the transport unit. The transport unit includes a straight transport unit that straightly conveys the recording medium. The transport unit also includes a looped transport unit that branches and turns from the straight transport unit and returns the recording medium to the straight transport unit. A first recording region is disposed at the looped transport unit and a second recording region is disposed at the straight transport unit.
摘要:
According to an aspect of the invention and there is provided a recording material having an ink, ink absorbing particles that absorb the ink, and a curable liquid that cures the substantial surface of the ink absorbing particles.
摘要:
A droplet discharge apparatus, comprising: a droplet discharge head for discharging droplets, an opposing member, facing the droplet discharge head, an applying member which applies, to the opposing member, application liquid having a characteristic of repelling liquid discharged from the droplet discharge head, and a blade which is in contact with the opposing member and cleans the opposing member, the blade having a characteristic of an affinity to the application liquid at least at a contact portion with the opposing member.
摘要:
A liquid droplet ejection apparatus comprising a liquid droplet ejection head that ejects liquid droplets, a conveyor belt that retains and conveys a recording medium while causing the recording medium to face the liquid droplet ejection head, and a charge roll that causes the recording medium to be electrostatically attracted to the conveyor belt. The charge roll and the conveyor belt are configured not to contact each other, and a gap between the charge roll and the conveyor belt is less than the thickness of the recording medium.
摘要:
The present invention provides an ink drying prevention apparatus that can prevent ink within an ink-jet recording head from drying, for a long period of time. The ink drying prevention apparatus prevents ink within an ink-jet recording head from drying, and includes a porous substance permeated with a seal liquid that is nonvolatile and incompatible with the ink within the head, wherein the porous substance can contact a nozzle surface of the ink-jet recording head. The seal liquid forms plural meniscuses in an interface with the nozzle surface and inside the porous substance to block air paths, thereby preventing ink within a nozzle exposed to the nozzle surface from drying.