Abstract: A cloud server acquires a stop period indicating a period during which a management server refrains from providing services; transmits connection requests to said management server if not in the stop period; establishes first communication session when establishment requests including the same address information as address information of connection destination included in the connection request are received from a relay device receiving connection requests forwarded from the management server after transmission of connection requests; transmits jobs to a control target device via first communication session; after first communication session is established, in response to acquisition of result of jobs executed by the control target device, if in the stop period, disconnects first communication session after the stop period finished; and if jobs are generated in the stop period, transmits to the control target device jobs generated in the stop period, via first communication session established before the sto

Abstract: A high-frequency module includes a lower base member having a recess part formed in an upper face thereof, and having a base metal part formed on a lower face thereof that is to be grounded, an upper substrate disposed inside the recess part of the lower base member, a semiconductor device mounted on an upper face of the upper substrate, a first ground line connected to the semiconductor device and formed on the upper substrate, and a ground metal part connected to the base metal part and disposed in the lower base member, wherein the ground metal part is connected to the first ground line on the upper substrate.

Abstract: A communication system includes a cloud server, a management server, a gateway-enabled device, and a printing apparatus, and these are connected to each other. The gateway-enabled device includes a mode switch that wakes up the device from power saving mode when a HTTP tunneling request is received from the cloud server via a second requesting portion of the management server, a tunneling portion that accesses the cloud server by HTTP tunneling if the request is received via a first requesting portion of the management server during normal operation mode or that does the same after back to normal operation mode if the request is received via the second requesting portion by a method allowing waking up from power saving mode, a receiver that receives a print job from the cloud server having being accessed by HTTP tunneling, and a transfer portion that transfers the print job to the printing apparatus.

Abstract: An optical writing device having; a plurality of light-emitting points; a plurality of drive circuits for supplying drive currents to the plurality of light-emitting points respectively; a photodetector for outputting signals indicating quantities of light entering thereto from the respective light-emitting points; a gain switch circuit for outputting photodetection signals obtained by amplifying the signals output from the photodetector in regard to the respective light-emitting points with gains preset for the respective light-emitting points; and a control circuit for controlling the drive circuits such that the photodetection signals output from the gain switch circuit in regard to the respective light-emitting points coincide with a value substantially equal to a predetermined reference value. The gains for the respective light-emitting points are preset based on the distances between the photodetector and the respective light-emitting points.

Abstract: A high-frequency module includes a lower base member having a recess part formed in an upper face thereof, and having a base metal part formed on a lower face thereof that is to be grounded, an upper substrate disposed inside the recess part of the lower base member, a semiconductor device mounted on an upper face of the upper substrate, a first ground line connected to the semiconductor device and formed on the upper substrate, and a ground metal part connected to the base metal part and disposed in the lower base member, wherein the ground metal part is connected to the first ground line on the upper substrate.

Abstract: Optical print head includes: light-emitting elements connected one-to-one to current supply lines branching from first power line at different positions in longitudinal direction; holding elements; signal writing unit writing luminance signal into each holding element, the luminance signal being represented by voltage indicating light emission amount of corresponding light-emitting element; second power line supplying reference voltage to each holding element, the reference voltage being reference when signal writing unit writes luminance signal into holding element; and driving drivers corresponding one-to-one with current supply lines and controlling current supplied to corresponding current supply line from first power line, in accordance with voltage held in corresponding holding element when signal writing unit has written luminance signal into corresponding holding element, wherein power source supplying the reference voltage to second power line is common with power source supplying voltage to signal o

Abstract: An optical print head includes: light-emitting elements in line shape; first power line supplying first reference voltage; second power line supplying drive current to each light-emitting element and supplying second reference voltage; DAC outputting first voltage indicating light emission amount of each light-emitting element; first elements for holding first voltage difference between the first reference voltage and the first voltage; second elements each electrically connectable with corresponding first element and for holding second voltage difference between the second reference voltage and second voltage according to the first voltage, and during supply of drive current, controls each first element to hold the first difference by electrically disconnecting the first and second elements, and temporarily suspends supply of the drive current, and controls the second element to hold the second difference by electrically connecting the first and second elements, such that the drive current according to the s

Abstract: An optical print head for forming an electrostatic latent image on a photosensitive body, including: current-driven light-emitting elements disposed in a line shape; an indicator circuit that outputs indicator current indicating light emission amounts to the light-emitting elements; and for each light-emitting element: a holding circuit that, during a main scanning period, accumulates indicator current during a sample period to generate an indicator potential and holds the indicator potential during a hold period; and a drive circuit that supplies drive current to the light-emitting element according to the indicator potential, wherein each of the sample periods is divided into writing periods, and each of the holding circuits holds the indicator potential corresponding to the holding circuit according to a total of indicator current amounts in the sample period corresponding to the holding circuit, the indicator current amounts each indicative of indicator current during one of the writing periods.

Abstract: To provide a sliding member which has joined strength that is suitable for the circumstance, to which heavy load is applied, and which is excellent in abrasion resistance property. The sliding member 1 contains a supporting layer 2 composed of ferrous metallic material, and a sliding layer 3 composed of copper metallic material, which is formed on a surface 2a of the supporting layer 2. The surface 2a of the supporting layer 2 and the sliding layer 3 are configured to be not a plane and a sliding surface 3a formed on a surface of the sliding layer 3 is configured to be not a plane. The sliding layer is formed on the roughed surface 2a of the supporting layer 2 by thermal spaying.

Abstract: An optical writing device includes a plurality of current driven light emitting elements, first and second power source lines, a designation circuit that outputs a designation potential, first driving circuits provided for each of the light emitting elements to supply driving current to the corresponding light emitting element, second driving circuits provided for each of the light emitting elements to supply driving current to the corresponding light emitting element, and a switching control unit that alternately switches respective states of the first and second driving circuits between a state where one of the first and second driving circuits receives the designation potential while the other driving circuit supplies the driving current, and a state where the other driving circuit receives the designation potential while the one driving circuit supplies the driving current.

Abstract: A printing apparatus, comprising a driving unit for driving a printhead including a plurality of nozzles each of which prints a dot, a conveying unit for conveying a printing medium, a memory and a unit, wherein the plurality of nozzles are arranged to form nozzle arrays adjacent to each other, the unit performs a first operation for developing printing data column by column on the memory, a second operation for assigning the printing data to each nozzle array, and a third operation for controlling the driving unit based on the assigned printing data, and, after the first operation and before the second operation, the unit specifies a portion of the printing data corresponding to a dot deviated from a correct printing region due to a tilt of the nozzle arrays and rearranges the portion.

Abstract: There are provided a printing apparatus, a method for controlling the printing apparatus, and a storage medium. The printing apparatus includes a conveying unit conveys a print medium; a print head applies a color material on the print medium; an obtaining unit configured to obtain, in the case where a first surface of the print medium on which a first image is printed comes in contact with the conveying unit, information on a printing condition of the first surface that becomes a factor of changing a conveying speed of the print medium in the predetermined direction; and a control unit configured to control timing of applying a color material on a second surface of the print medium that is a surface at the opposite to the first surface according to the printing condition indicated by the information obtained by the obtaining unit.

Abstract: A sliding member having a hardness proper for an environment where a high-pressure is applied and having a good abrasion resistance. A sliding member 1 comprises a first sintered compact layer 2 formed by solidifying an iron-based metallic powder with a sinter; and a second sintered compact layer 3 formed by solidifying a copper-based metallic powder on a surface of the first sintered compact layer 2 to improve a sliding characteristic. The second sintered compact layer 3 is densified by a blast process where the powder is collided against a surface of the second sintered compact layer 3.

Abstract: Optical print head includes: light-emitting elements connected one-to-one to current supply lines branching from first power line at different positions in longitudinal direction; holding elements; signal writing unit writing luminance signal into each holding element, the luminance signal being represented by voltage indicating light emission amount of corresponding light-emitting element; second power line supplying reference voltage to each holding element, the reference voltage being reference when signal writing unit writes luminance signal into holding element; and driving drivers corresponding one-to-one with current supply lines and controlling current supplied to corresponding current supply line from first power line, in accordance with voltage held in corresponding holding element when signal writing unit has written luminance signal into corresponding holding element, wherein power source supplying the reference voltage to second power line is common with power source supplying voltage to signal o

Abstract: An optical print head performs optical writing onto target, and includes: current-driven light-emitting elements arranged in rows in a predetermined direction; driving transistors that are each electrically series-connected with the light-emitting elements in one-to-one correspondence, and each supply a driving current to a corresponding light-emitting element; a current control unit that controls, for each light-emitting element, a driving current amount in accordance with variation in light-emitting properties of the light-emitting element that indicate relation between the driving current amount and a light amount emitted by the light-emitting element; an application unit that, upon receiving electrical power supplied from an external power source, applies application voltage to circuits each consisting of a light-emitting element and a corresponding driving transistor; and a voltage control unit that suppresses variation in divided voltage applied to each driving transistor by controlling the application

Abstract: A printing apparatus including a print head including nozzle groups each having nozzles, each of the nozzle groups applying ink having a plurality of volumes from the nozzles to form dots including dots differing in size, including: an arrangement determination unit to determine an arrangement of dots to be formed by each of the nozzle groups; a size determination unit to determine sizes of ink ejected to print the dots determined by the arrangement determination unit, according to respective ejection characteristics of the nozzle groups, such that a print characteristic of an image based on the dot arrangement determined by the arrangement determination unit is within a predetermined range; and an ejection control unit to control the print head to eject ink having the plurality of sizes determined by the size determination unit in positions of a print medium based on the arrangement determined by the arrangement determination unit.

Abstract: An optical writing device for forming an electrostatic latent image on a photoreceptor by exposing the photoreceptor to light modulated in accordance with image data. The optical writing device has: a substrate; a light-emitting-element array including a plurality of light-emitting elements supported by the substrate to be arranged in a main-scanning direction; and a light-receiving-element array substantially in parallel to the light-emitting-element array, the light-receiving-element array including a plurality of light-receiving elements supported by the substrate to be arranged in the main-scanning direction. For light-quantity measurement of one of the light-emitting elements, at least an output value output from one of the light-receiving elements of which center is located in a different position, with respect to the main-scanning direction, from a center of the one of the light-emitting elements is used.

Abstract: In image processing, for a pixel with a density level smaller than a predetermined threshold value, the density level is corrected based on a parameter representing a degree of condensation of ink in a nozzle. For pixel with a density level equal to or larger than the predetermined threshold value, the density level is not corrected. This makes it possible to suppress an unevenness in density caused by the condensation of ink while suppressing blur at a contour of a character or a thin line.

Abstract: An integrated circuit includes a transistor, and an impedance matching circuit coupled with the transistor. The impedance matching circuit includes a signal line to transmit a high-frequency signal and a power supply line that is a short stub branched from the signal line and supplies current to the transistor. The power supply line includes a bent line and a shortcut line to shortcut the bent line.

Abstract: A light-emitting element having a light-emitting section and a light-receiving section provided on a substrate. The light-emitting section includes: an organic compound in which light is emitted; a translucent reflecting portion that transmits the emitted light which has spectral radiance changeable with changes in ambient temperature; and a transparent portion that radiates first part of the light coming through the translucent reflecting portion to outside and total-reflects second part that is light incident to a boundary surface therebetween at angles larger than a critical angle. Wherein, the light-receiving section is capable of receiving the light total-reflected at the boundary surface, the received light having a quantity of light changeable with changes in wavelength of the light passing through the translucent reflecting portion. The light-receiving section further outputs a signal which has an amplitude level in correlation to the quantity of light.