Abstract: A printing device includes a head including a nozzle configured to ejects ink, a platen including a support surface configured to support a printing medium to which a pretreatment liquid is applied, the pretreatment liquid containing a volatile component that reacts with the ink, and a humidified air supply port configured to supply humidified air to the support surface of the platen that supports the printing medium, the humidified air supply port being provided around the platen in which the support surface of the platen is disposed at a printing position facing the nozzle.

Abstract: A radar device includes: a first radar and a second radar to transmit, as radar signals, frequency modulated signals whose frequency gradients with a lapse of time are different from each other and receive reflected waves of the radar signals; a calculation unit to calculate a first frequency spectrum obtained by performing Fourier transform in a distance direction on digital data of a beat signal and a second frequency spectrum obtained by performing Fourier transform in a relative velocity direction on the first frequency spectrum, and calculate distance and velocity information for each radar on the basis of a beat frequency and a Doppler frequency corresponding to a peak value in the second frequency spectrum; and a processing unit to compare the distance and velocity information calculated for each of the radars.

Abstract: According to the present invention, there can be provided an optical lens, comprising a thermoplastic resin containing a constituent unit (A) derived from a monomer represented by the following general formula (1), and a constituent unit (B) derived from BPEF or BPPEF represented by each of the following structural formulae, wherein the molar ratio (A:B) between the constituent unit (A) and the constituent unit (B) is 5:95 to 79:21: wherein R1 to R4 each independently represent a hydrogen atom, a halogen atom, an optionally branched alkyl group containing 1 to 10 carbon atoms, an alkoxy group containing 1 to 10 carbon atoms, or an aryl group containing 6 to 15 carbon atoms, and

Abstract: A polycarbonate resin includes a constituent unit (a) given by general formula (1-IA); a constituent unit (b) given by general formula (1-1A), but different from the constituent unit (a); a constituent unit (c-1) given by general formula (1-2A) or a constituent unit (c-2) given by general formula (3-1); and a constituent unit (d) given by general formula (2), wherein the content of the constituent unit (a) is 1-50 mol %, the content of the constituent unit (b) is 1-70 mol %, the content of the constituent unit (c-1) or (c-2) is 1-50 mol %, and the content of the constituent unit (d) is 1-30 mol %, in each case with reference to the total amount of the constituent units (a) to (d).

Abstract: According to the present invention, it is possible to provide a polycarbonate resin composition which includes a structural unit (A) derived from a monomer represented by general formula (i) and a structural unit (B) derived from a monomer represented by general formula (ii), and in which the structural unit (A) and the structural unit (B) are contained at a mass ratio of structural unit (A): structural unit (B)=91:9 to 99:1. (In general formula (i), R represents a hydrogen atom or an alkyl group having 1-4 carbon atoms.) (In general formula (ii), R1, R2, R3, and R4 each independently represent a hydrogen atom or the like, and Y1 and Y2 each independently represent an alkylene group having 1-4 carbon atoms.

Abstract: An underwater vehicle system includes: a first underwater vehicle configured to perform work in water while moving in a predetermined proceeding direction; and a second underwater vehicle configured to replace the first underwater vehicle and perform work in water. When the second underwater vehicle replaces the first underwater vehicle, the second underwater vehicle approaches the first underwater vehicle based on a signal transmitted from the first underwater vehicle.

Abstract: An image formation device includes a head and a cooling portion. The head is configured to discharge ink. The cooling portion is configured to cool a pre-treatment agent. The pre-treatment agent contains a volatile component having volatility, and reacting with the ink.

Abstract: A communication system capable of preventing unnecessary switching of an energy saving cell between a normal operation state and an energy saving state. An energy saving cell (ES cell) is in a dormant state that is the energy saving state. In this case, when being notified of a wake-up request message from a communication terminal device (UE), the ES cell executes access restriction control to judge whether the UE can access its own cell. If judging that the UE can access its own cell, the ES cell switches on its own cell and shifts from the dormant state to an active state that is the normal operation state.

Abstract: Provided is a radio communication technology with low latency and high reliability. A communication system includes a communication terminal (UE), and a plurality of communication apparatuses (a source gNB and a target gNB) configured to perform radio communication with the communication terminal. When the communication terminal switches a communication apparatus to which the communication terminal is connected from a first communication apparatus (the source gNB) to a second communication apparatus (the target gNB), the communication terminal corrects a time of the communication terminal, based on a timing reference to be transmitted from the second communication apparatus and timing advance of the second communication apparatus (Step ST1512).

Abstract: A communication system includes a user apparatus; and base stations respectively configured to wirelessly communicate with the user apparatus. The base stations include a master base station and a secondary base station that configure dual connectivity for the user apparatus. The secondary base station is configured with a grant configuration related to transmission without grant in uplink to the secondary base station.

Abstract: A communication system that can reduce latency while preventing reduction in a transmission rate. An eNB communicates with a UE #1 using a self-contained subframe including a first downlink signal (DL #1) and a first uplink signal (UL #1), and with a UE #2 using a self-contained subframe including a second downlink signal (DL #2) and a second uplink signal (UL #2). The self-contained subframe for the UE #1 includes a first gap duration (Gap #1) during which neither the DL #1 nor the UL #1 is transmitted, between transmission durations of the DL #1 and the UL #1. The self-contained subframe for the UE #2 includes a second gap duration (Gap #2) during which neither the DL #2 nor the UL #2 is transmitted, between transmission durations of the DL #2 and the UL #2. The Gaps #1 and #2 are set to each UE.

Abstract: A user apparatus in a communication system includes: a plurality of user apparatuses each of which is configured to transmit a sounding reference signal (SRS); and a base station configured to wirelessly communicate with the plurality of the user apparatuses. The user apparatus receives, from the base station, configuration information related to a wireless resource of the sounding reference signal allocated to another user apparatus.

Abstract: A radio communication technology for enabling high reliability, a high transmission rate, and low power consumption is provided. A communication system includes a communication terminal and a base station. The base station includes a plurality of transmitter-receivers configured to perform radio communication with the communication terminal. The base station is configured to perform radio communication with the communication terminal by using a part or all of the plurality of transmitter-receivers. The communication terminal receives a downlink synchronization signal from at least one first transmitter-receiver to be newly connected, and establishes downlink synchronization with the at least one first transmitter-receiver by using the downlink synchronization signal. The communication terminal establishes uplink synchronization with the at least one first transmitter-receiver through random access processing.

Abstract: A user apparatus in a communication system includes: a plurality of user apparatuses each of which is configured to transmit a sounding reference signal (SRS); and a base station configured to wirelessly communicate with the plurality of the user apparatuses. The user apparatus receives, from the base station, configuration information related to a wireless resource of the sounding reference signal allocated to another user apparatus.

Abstract: A communication system includes a communication terminal, base stations performing radio communication with the communication terminal, and a host device of the base stations. A serving base station of the communication terminal or the host device selects, from among the base stations, a positioning base station transmitting a positioning signal for measuring a position of the communication terminal. The positioning base station transmits the positioning signal, and the communication terminal receives the positioning signal.

Abstract: A radar device includes a beat signal generating unit to receive a reception signal that repeats a corresponding chirp signal of a reflected transmission signal off an observation target, and generate a beat signal between a chirp signals of the transmission signal and the reception signal, an AD converting unit to convert the beat signal into digital data, a distance spectrum calculating unit to calculate a plurality of distance information spectra corresponding to each of beat data, an interference countermeasure determining unit to determine necessity of an interference countermeasure using the obtained state value, and output an interference countermeasure signal when the interference countermeasure is necessary, and a distance and speed information outputting unit to output a distance to the observation target and a relative speed with respect to the observation target from the plurality of distance information spectra the interference countermeasure is unnecessary.

Abstract: Provided is a communication system capable of suppressing increase in the power consumption of a communication terminal device, degradation in the communication quality, and reduction in the use efficiency of radio resources. A base station device (gNB) notifies a communication terminal device (UE) of information on the next reception timing. The UE receives, for example, a downlink control signal in a subframe. The UE obtains, from the downlink control signal, information on a piece of user data in the subframe, and the information on the next reception timing. The UE transmits and receives the piece of user data to and from the gNB. The information on the next reception timing indicates a subframe as the next reception timing of the UE. The UE receives a downlink control signal in the subframe.

Abstract: A radar device includes: an electromagnetic noise detecting unit for detecting electromagnetic noise input to an ADC using digital data in a period when no radar signal is transmitted, among digital data output from the ADC; and an observation target detecting unit for detecting an observation target using digital data in a period when the radar signal has been transmitted, among the digital data output from the ADC, and the electromagnetic noise detected by the electromagnetic noise detecting unit.

Abstract: A base station includes: a control unit that allocates one or more layers per terminal for transmission to one or more terminals, and configures positions in a frequency domain and a time domain of reference signals of each of the layers on the basis of at least one of information indicating a position of each of the terminals and information indicating condition of each of channel between the transmission device and the one or more terminals; a processing unit that arranges the reference signals of each of the layers in the frequency domain and the time domain on the basis of the positions in the frequency domain and the time domain configured by the control unit; and a precoding unit and a transmitting unit that perform space-division multiplexing on signals of one or more layers arranged by the processing unit, and transmit the multiplexed signals.

Abstract: Provided is a communication system with low latency and high reliability, etc. Even after transitioning from RRC_CONNECTED to RRC_INACTIVE, a communication terminal device maintains secondary base station configuration information on configuring a secondary base station. Even when at least one of a master base station and a secondary base station is changed during the RRC_INACTIVE, the communication terminal device maintains the secondary base station configuration information. The communication terminal device again transitions to the RRC_CONNECTED using the maintained secondary base station configuration information.