Abstract: A near-infrared laser focusing lens and a laser printing device are provided. The lens comprises a first lens, a second lens, a third lens, a fourth lens and a fifth lens (L1, L2, L3, L4, L5) which are coaxially arranged along a transmission direction of incident light rays, wherein the first lens (L1) is a negative plane-concave lens; the second lens and the third lens (L2, L3) are positive biconvex lenses; and the fourth lens and the fifth lens (L4, L5) are positive meniscus lenses; and a concave surface (S2) of the first lens (L1) is opposite to the second lens (L2), and the middle parts of the fourth lens and the fifth lens (L4, L5) both reversely protrude towards the transmission direction of light beams. After the shapes and the relative locations of the lenses are designed, the near infrared light can be clearly imaged, and the geometrical aberration of the lens can be effectively corrected, so as to obtain a clear flat field.

Abstract: A light-emitting element array module includes a control driver configured to receive print data and operate, and light-emitting element array chips configured to receive a signal from the control driver, respectively, and operate, wherein the light-emitting element array chips are connected to the control driver through respective data lines, and the control driver controls an operation point in time of each of the light-emitting element array chips by adjusting input points in time of a start signal and a data signal according to a registration error of each of the light-emitting element array chips.

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: Because the ejection state of a printing element in a printing apparatus may vary at all times, an inspection item for inspecting a printed image may be set in consideration of the ejection state of the printing element. An inspection item for inspecting a printed image may be set based on information including a temperature characteristic of a printing head and a state of ink such as an elapsed time from the last ejection. This allows image inspection that matches with variations in the ejection state of the printing element.

Abstract: When test print is performed for printing an image on a transparent sheet, an inexpensive sheet is used instead of the transparent sheet. A method for controlling a printing apparatus includes receiving a setting of the test print, and performing control to print the image as a mirror image on a second side of the transparent sheet if the setting of the test print is not received, and performing control to feed an alternative sheet instead of the transparent sheet to print the image as a normal image on a first side of the alternative sheet if the setting of the test print is received.

Abstract: A multibeam light source unit, a method of adjusting the same, a light scanning unit, and an image forming apparatus are provided. The multibeam light source unit includes light sources that emit multiple beams, a flange that includes installation surface on which holder installation holes are provided, and middle holders on which a light source is installed. The middle holder includes a light source mounting unit, a cylinder-shape insertion unit that is inserted into a holder installation hole, and fixing protrusion units protruding outside from a light source mounting unit and fixed to the flange, and a jig coupling unit that is coupled with a jig when adjustment is performed.

Abstract: An optical scanning device including a light source and a rotating polygon mirror having a plurality of reflective surfaces scans a scan area of a surface in a main scanning direction with the light flux emitted from the light source and reflected by the rotating polygon mirror. All the light flux is reflected by a first reflective surface when light flux deflected by the rotating polygon mirror is directed onto a center position of the scan area, and a part of the light flux incident to the rotating polygon mirror is reflected by a second reflective surface adjacent to the first reflective surface when light flux reflected by the rotating polygon mirror is directed onto at least one end of both ends of the scan area and the light flux obliquely enters a plane perpendicular to a rotation axis of the rotating polygon mirror.

Abstract: An optical scanning device includes a light source emitting light to form an image by optical scanning; and a control section generating a control signal, which is for turning on and off the light source, based on an image signal. Further, the control section generates a pulse signal having a predetermined time width when the image signal indicates that the light source is to be turned off.

Abstract: Provided is an image forming apparatus including a casing body, an exposure portion in a rod shape that has a connector and exposes a target object, a first support portion that supports the exposure portion over a longitudinal direction of the exposure portion and is removed from the casing body by being moved in the longitudinal direction, and a cable that is connected to the exposure portion via the connector, transmits power to the exposure portion, has a curved area that is a part of the cable in a curved state, and is in contact with the first support portion in a part of the curved area, in a state where the first support portion is accommodated in the casing body.

Abstract: A laser label printer for use with a laser markable medium includes a laser-diode fiber-coupled to an optical train, which includes a focusing lens for focusing the radiation on the medium. The focusing lens is traversed across the medium, with incremental motion of the medium between traverses, for line by line printing of the label. The printer includes a feature for protecting the focusing lens from contamination, and self-diagnostic and adjustment features.

Abstract: An image forming apparatus includes a rotating polygon mirror configured to rotate and reflect the first laser beam and the second laser beam, a first generation unit configured to generate a first signal based on timings at which the respective first laser beams, a second generation unit configured to generate a second signal for determining a timing to form an electrostatic latent image on the second image bearing member with the second laser beam based on the first signal and a correction value, and a calculation unit configured to calculate the correction value based on the output of the detection unit, in which the calculation unit calculates the correction value based on the signal output from the detection unit in a period of time that has passed until the rotating polygon mirror reaches steady rotation since it has started to be driven to rotate.

Abstract: Included is an image bearing member; an exposure unit configured to form electrostatic latent images by scanning light on the image bearing member and to change the amount of light along the scanning direction of the light; a forming unit configured to form a toner patch on the basis of the electrostatic latent image formed by a plurality of different light amounts, to adjust the light amount of the exposure unit; a detection unit configured to detect the toner patch; and a control unit configured to adjust the light amount of the exposure unit along the scanning direction of the light depending on the detection result by the detection unit. The control unit changes the light amount of the exposure unit along the scanning direction of the light over a portion of regions rather than all regions in the scanning direction when forming the toner patch.

Abstract: An optical writing head includes a light emitting device array having a plurality of light emitting device that emit parallel rays of light, and an optical unit arranged between the light emitting device array and an image plane to form an image by the rays of light emitted from the light emitting devices on the image plane. The optical unit includes a two-dimensional grating.

Abstract: Multi-pass recording is executed for each of n types of super cell regions that are each defined as a region that contains pixel positions in which recording of dots is performed in various types of main scan passes of n types of main scan passes. The n types of super cell regions (i) include a boundary portion that is not parallel to either a main scanning direction or a sub-scanning direction in at least a portion of a boundary of the individual super cell regions, and (ii) are arranged such that the boundary of the n types of super cell regions appears periodically repeating along both the main scanning direction and the sub-scanning direction.

Abstract: To provide an image processing method, including: image recording, wherein an image composed of a plurality of laser drawn lines is recorded by heating by irradiating parallel laser lights on a recording medium spaced by a predetermined distance, wherein, in the image recording, among the plurality of laser drawn lines constituting the image, at least two units of lines drawn with different energy, each composed of a pair of laser drawn lines adjacent to each other and with different irradiation energy, are formed.

Abstract: An image forming apparatus for performing laser exposure is provided. The image forming apparatus includes a driving circuit for supplying drive current to a laser light source in accordance with an image pulse signal; a pulse width expansion portion for expanding a pulse width of the image pulse signal supplied to the driving circuit; and an adjustment control portion for setting, based on state data indicating a state related to light emission start characteristics of the laser light source, a value of the bias current supplied as a part of the drive current to the laser light source and an amount of expansion of the pulse width in such a manner that laser light emission occurs in a period of time having a length equal to a length of a pulse width of each pulse in the image pulse signal.

Abstract: Optical apparatus includes a mount, which holds a workpiece. An array of optical heads project respective patterns of radiation onto the workpiece. A calibration assembly captures images of the respective patterns. A motion assembly, on which the calibration assembly is mounted, transports the calibration assembly among a plurality of different positions between the array of the optical heads and the mount so as to intercept and image, at each of the different positions, a respective pattern projected by a different one of the optical heads. A processor processes the images captured by the calibration assembly at the different positions so as to monitor operation of the apparatus.

Abstract: A method of forming a lenticle on a substrate includes operating a plurality of inkjets to eject a plurality of ink drops of an optically transparent ink onto a surface of a substrate between a first printed line of an optically opaque ink and a second printed line of the optically opaque ink to form a lenticle from the optically transparent ink, the first printed line being formed substantially parallel to the second printed line with a separation between the first printed line and the second printed line corresponding to a predetermined width of a lenticle to be formed on the substrate.

Abstract: Disclosed is a liquid ejecting apparatus, and a method of controlling the liquid ejecting apparatus, whereby at a timing at which temperature detection and ejection pulse change are subsequently performed, a frequency of execution of temperature detection and driving pulse change differs according to whether temperature detected by the temperature sensor is in a first temperature range in which a degree of change in viscosity of ink for change in temperature is relatively high or in a second temperature range in which the degree of the change in viscosity for the change in temperature is relative stable. More specifically, in the first temperature range, the frequency of execution of temperature detection and driving pulse change is high compared to the second temperature range.

Abstract: A liquid discharging apparatus includes: a discharging portion which discharges liquid; a carriage which has the discharging portion mounted thereon, and is provided with a conductive member; a power supply source which supplies power for discharging the liquid from the discharging portion; a housing which has the power supply source installed therein; and a carriage guide axis which supports the carriage to be movable with respect to the housing, in which between the carriage guide axis and the conductive member, a coupling capacitance is formed by electric field coupling, and in which the coupling capacitance is included in a power supplying path to the discharging portion or a discharging path from the discharging portion, in a transmission path of the power.