Abstract: An image forming apparatus switches a line of image data, to be read out from a storage unit, to another, depending on a position in the line in a scanning direction such that the curving of a scanning line is offset, and reducing trouble in reading out image data in units of rectangular image data blocks A data processing section performs image processing based on a plurality of rectangular image areas generated by dividing image data stored in a memory section. An image reading unit reads out the image data as the rectangular image areas, and transfers the rectangular image areas to the data processing section. A printer section forms an image by scanning a photosensitive member with irradiation light based on the rectangular image data areas. A DMA controller stores positional information indicative of line-switching positions. The rectangular image data areas are read out according to the positional information.

Abstract: A recording head is supplied capable of generating a plurality of concentration dots on the same line without providing a complicated circuit. The recording head has a recording device array in which a plurality of recording devices are arranged, and comprises a first input terminal which inputs a first driving signal for deciding a first driving time; a second input terminal which inputs a second driving signal for deciding a second driving time; a selecting section which selects whether or not the driving signal of the first input terminal or the second input terminal is used for each of the recording devices; and a driving circuit which drives the corresponding recording device by the driving signal selected by the selecting section, wherein the plurality of recording devices of the recording device array are driven by selected signals on the basis of print data.

Abstract: An exposure head includes a light emitting segment that emits light; an electrical load that is electrically connected to a circuit in which a current to be supplied to the light emitting segment flows; and a current supply controller that supplies a first current to the light emitting segment to cause the light emitting segment to emit light and supplies a second current to the electrical load during the time when the current supply controller blocks the supply of the first current to the light emitting segment.

Abstract: An image forming apparatus in which a BD signal, which is a main-scanning reference signal, and image data are input to an image signal generating unit. Using a converting unit, main-scanning coordinate information, output from a main scanning coordinate measuring counter, and correction amounts, recorded in a correction amount LUT, are referred to, to convert a proper amount of image data. Here, the converting unit performs calculations in accordance with the main-scanning coordinate information, to obtain the image data of correction amounts that differ in accordance with coordinates. The correction amounts are in correspondence with different amounts of driving current in a main-scanning direction. Therefore, laser light emission, which provides a light quantity in accordance with the image data, is controlled.

Abstract: An image forming apparatus includes: a light source that emits a light beam; a photosensitive member; a driving motor; a rotary polygon mirror, which is rotated by the driving motor, and which periodically deflects the light beam emitted from the light source to sequentially form scanning lines on the photosensitive member; a position detecting unit, which detects a rotational position of the driving motor, and which outputs a detection signal; a sensor, which receives the light beam deflected by the rotary polygon mirror, and which outputs a light receiving signal; a detecting unit, which receives the detection signal and the light receiving signal, and which detects a rotation direction of the driving motor based on a timing pattern of a detection of the rotational position of the driving motor and a reception of the light beam by the sensor.

Abstract: Electrophotographic print system, comprising a photosensitive medium, and a laser array being provided with a plurality of laser diodes arranged to emit light onto the photosensitive medium for varying an electrical potential on a surface of the photosensitive medium, and a plurality of heat dissipation diodes, each heat dissipation diode being arranged in proximity to a corresponding laser diode, wherein each laser diode and the corresponding heat dissipation diode are coupled to a common drive circuit and are arranged in opposite current flow directions with respect to each other, so that in use the current flows either through the laser diode or through the heat dissipation diode depending on the current flow direction in the drive circuit.

Abstract: An optical write apparatus. The apparatus has a semiconductor laser drive apparatus that modulates a semiconductor laser according to a modulation signal and induces the semiconductor laser to emit light. The drive apparatus has a control unit that is adapted to supply a fixed bias current during a light emission off time, and start supplying a predetermined current that is less than a light emission threshold current right before a light emission time. The apparatus has a write unit that is adapted to realize optical writing on an image sustaining element by scanning a laser beam that is emitted from the semiconductor laser driven by the semiconductor laser drive apparatus using a polygon mirror.

Abstract: In an exposure apparatus employing an over filled optical system, the light quantity distribution on a scanning plane is kept nearly constant for a plurality of scanning light quantities. It selects the light quantity of the light beam irradiated onto the photosensitive body from a plurality of levels, and sets the light quantity selected. According to the light quantity, it selects one of a plurality of correction current profiles, and supplies a light source with a current passing through the correction based on the correction current profile selected. Since the light quantity of the light beam irradiated onto the photosensitive body is corrected by the correction current, the light quantity of the light beam on the photosensitive body becomes nearly constant in the scanning direction.

Abstract: A thermosensitive recording printer is provided with semiconductor lasers 1a to 1c, a polygon mirror 7 for condensing laser light emitted from the semiconductor laser 1a to 1c as condensed spots on a recording medium 10 to perform scanning in a main scanning direction, and a control unit 9 for controlling the output of the laser light. If a ratio of a spot diameter D1 of the condensed spots in the main scanning direction and a spot diameter D2 in a sub scanning direction satisfy a relationship of D1/D2?½ at the time of forming an image composed of a plurality of pixels on the recording medium 10 using laser light, high-speed thermosensitive recording and a recording method with an uncomplicated power control are realized without reducing the power density of the condensed spots.

Abstract: An exposure device includes a reference current generating unit generating a reference current for each image of respective colors, a photoelectric current generating unit generating a photoelectric current in response to a light amount of the light emitting element, a driving unit driving the light emitting element, a first controller, a drive voltage holding unit holding a drive voltage given to the driving unit, a second controller controlling the driving unit based on the drive voltage held, a comparison current generating unit generates a comparison current, a difference current generating unit generating a difference current, of each color, corresponding to a difference between the reference current of each color and the comparison current. The first controller compares a value obtained by adding the difference current of each color to the photoelectric current with the comparison current to control the driving unit so that the photoelectric current becomes the reference current.

Abstract: A light-source driving device includes a high-frequency clock generating circuit that generates high-frequency clock signals of which phases are different from each other; an image-data generating circuit that generates a plurality of pieces of image data corresponding to light emitting units in accordance with image information; a write control circuit that generates a plurality of pieces of modulation data corresponding to the light emitting units based on the image data and adjusts output timing of the modulation data individually in units of time corresponding to a phase difference of the high-frequency clock signals; and a light-source driving circuit that drives the light emitting units based on a plurality of pieces of PWM data output from the write control circuit.

Abstract: A light scanning device that performs rapid scanning synchronization timing detection to thereby enable automatic light amount control to be executed rapidly and with high accuracy. A light amount sensor disposed on a scanning line of the laser light receives the laser light. A controller controls the timing of emission by the laser emitting device and a light amount of the laser light based on image data, according to an output from the light amount sensor. A temperature sensor detects the temperature of the laser emitting device or in the light scanning device. A storage section stores data indicative of a relationship between temperature, current supplied to the laser emitting device, and light amount.

Abstract: An image-data transfer controller divides one line of image data for each of the light-emitting-element array units, transfers the divided image data to respective light-emitting-element array units, to drive each of the light-emitting elements in the light-emitting-element array units for an exposure in a main-scanning direction. The image-data transfer controller divides the one line of image data for each of the light-emitting-element array units and transfers the divided image data during one-line interval in the main-scanning direction, performs a plurality of data transfers in the one-line interval for driving each of the light-emitting elements by controlling a lighting time, and includes a plurality of lines of storing units.

Abstract: An optical scanning apparatus effectively blocks undesirable-light generated in opposed scanning units, and forms high-quality image with simple configuration. The apparatus includes two scanning units disposed with a polygon mirror therebetween, each scanning unit including: an incident optical system guiding a beam from a light source to the polygon mirror; and an imaging optical system including an imaging optical element to cause the deflected beam form an image on a scanning surface. One of the scanning units includes a member to block an undesirable light reflected on optical surfaces of the imaging optical element of the other scanning unit and traveling toward the scanning surface of said one scanning unit. rp<L?A/2 is satisfied, where rp denotes circumcircle radius of polygon mirror; L denotes distance from rotational center of polygon mirror to the blocking member of said one scanning unit, and A denotes length of polygon mirror drive circuit substrate.

Abstract: The light-emitting element head is provided with: plural light-emitting element chips in each of which light-emitting elements are arrayed in a line; a lighting signal supply unit supplying lighting signals for setting whether or not the light-emitting elements emit light, each of the lighting signals being provided in common to the light-emitting element chips that belong to one of N groups into which the plural light-emitting element chips are divided, where N is an integer of 2 or more; and a clock signal supply unit supplying a first clock signal as a transfer signal for causing the light-emitting elements to sequentially emit light, and second clock signals for setting the light-emitting elements ready to emit light, the second clock signals being different from one another, being supplied to the respective light-emitting element chips belonging to the one of the N groups, and being supplied in common across the N groups.

Abstract: A high-frequency clock generating circuit generates a plurality of high-frequency clock signals having different phases. A modulation-signal generating circuit generates a pulse modulation signal based on transition timing data including data pertaining to a turn-on timing at which a state of a light source is changed from a turn-off state to a turn-on state and a turn-off timing at which the state of the light source is changed from the turn-on state to the turn-off state by inputting any one of the high-frequency clock signals for a predetermined period including the turn-on timing and the turn-off timing.

Abstract: An optical scanner includes an inductor, an electric supply unit, an emitter, a mirror, a first receiving element, a second receiving element, and a measuring unit. The electric supply unit applies a supply voltage to the inductor alternately in opposite applying directions. The mirror reflects a laser beam to scan a photosensitive body within a scanning range. Each of the receiving elements is positioned at one end of the scanning range. The measuring unit measures the scanning time taken for the laser beam to be detected by the second receiving element after the beam is detected by the first receiving element. When the mirror scans the photosensitive body along a first primary scanning line after the mirror scans the body along a second primary scanning line, the electric supply unit varies the supply voltage according to the scanning time measured for the second primary scanning line.

Abstract: A driving apparatus having driving circuits formed to correspond to driven circuits arranged on a circuit board. Each driving circuit includes a driving control unit for driving the corresponding driven circuit, a reference voltage generation unit for generating a reference voltage according to a temperature of the corresponding driven circuit, a control voltage generation unit for generating, based on the reference voltage supplied from the reference voltage generation unit, a control voltage for driving the corresponding driven circuit, the control voltage generation unit supplying the generated control voltage to the driving control unit, a switch device formed between the control voltage generation unit and the reference voltage generation unit, and a switch control unit for driving the switch device based on an inputted control signal. The control voltage generation unit is connected to the reference voltage generation unit of another of the driving circuits via the switch device.

Abstract: In an exposure apparatus employing an over filled optical system, the light quantity distribution on a scanning plane is kept nearly constant for a plurality of scanning light quantities. It selects the light quantity of the light beam irradiated onto the photosensitive body from a plurality of levels, and sets the light quantity selected. According to the light quantity, it selects one of a plurality of correction current profiles, and supplies a light source with a current passing through the correction based on the correction current profile selected. Since the light quantity of the light beam irradiated onto the photosensitive body is corrected by the correction current, the light quantity of the light beam on the photosensitive body becomes nearly constant in the scanning direction.

Abstract: According to one embodiment, a print head includes first and second substrates, an OLED array and a drive circuit. The first substrate extending in a first direction and has a main surface including first to third regions. The first region extends in the first direction. The second and third regions are arranged in a second direction crossing the first direction with the first region interposed between the second and third regions. The OLED array includes first electrodes arranged above the first region, an organic emitting layer positioned above the first electrodes, and a second electrode positioned above the organic emitting layer. The drive circuit is configured to supply drive currents to the first electrodes and includes a first circuit positioned above the third region and a second circuit positioned above the third region.

Abstract: For suppressing density unevenness which is caused by changes in a main scanning line interval of a laser beam on the image bearing member due to a polygonal face tangle, laser luminance is controlled so as to maintain the density unevenness with a spatial frequency sensitive to human visibility substantially constant.

Abstract: A drive device for outputting a drive signal for driving a plurality of light emitting elements time-divisionally, the drive device includes a plurality of input terminals receiving input of a drive control signal for the light emitting elements, and a plurality of output terminals connected to the light emitting elements, for outputting the drive signal based on the drive control signal input into the input terminals, in which the input terminals and the output terminals are arranged substantially in a line.

Abstract: In a driving circuit, a drive transistor supplies drive electric current to record elements to construct an array, and a reference electric current generating circuit that provides a control voltage to the drive transistor and controls the drive electric current, wherein the drive transistor is composed of a first PMOS transistor and a second PMOS transistor that are connected in series; and the reference electric current generating circuit has a resistance element and a operational amplifier that are used to set a reference electric current for deciding the control voltage, wherein an output of the operational amplifier is provided to a control terminal of the first PMOS transistor; and a drive electric current ON/OFF signal to control on/off of the drive electric current is provided to a control terminal of the second PMOS transistor.

Abstract: A beam light scanning apparatus capable of reducing influences of variations in characteristics of circuits disposed in a signal path extending until a laser driver and speeding up image data transfer for scan and exposure. Data of each line is distributed by an image data I/F into data trains of two channels, i.e., an odd-numbered pixel train and an even-numbered pixel train. The data in the two-channel trains are written by writing units into a plurality of memories in parallel for each of the trains in response to a line sync signal. During the same processing cycle as that for the writing, the data are read out of the memories in parallel by reading units. The data of two channels are combined by a multiplexer into a data train in the original order of pixels in each line, and a driving signal based on the combined data is generated by a PWM. A laser is driven by the driving signal.

Abstract: A light-emitting element head includes: plural light-emitting element array chips that are divided into plural groups and that each are provided with light-emitting elements arranged in an array; a signal generation unit that generates a light-emission control signal for controlling blinking of the light-emitting elements, and an identification signal for identifying which of the light-emitting element array chips in each of the groups the light-emission control signal is for; signal lines through which the light-emission control signal and the identification signal are transmitted; and identification signal discrimination units that are connected to the signal lines and that are provided in the respective light-emitting element array chips, each of the identification signal discrimination units discriminating the identification signal, and transmitting the light-emission control signal to the light-emitting elements.

Abstract: An electro-optical device includes a potential generating circuit that generates a first power supply potential and a second power supply potential that is different from the first power supply potential; a first signal processing circuit that selectively outputs one of a first high potential and a first low potential according to a data signal at one of at least three levels; a second signal processing circuit that selectively outputs one of a second high potential that is different from the first high potential and a second low potential that is different from the first low potential according to the data signal; a first current source that generates a first current in accordance with an output of the first signal processing circuit and the first power supply potential; a second current source that generates a second current in accordance with an output of the second signal processing circuit and the second power supply potential; and an electro-optical element that provides a tone level according to the fi

Abstract: An image forming apparatus for simultaneously conducting multiple lines of exposure by scanning multiple laser beams from multiple light sources onto an image carrier in a main scanning direction, including: multiple light sources which are driven to emit laser beams based on image data; and a control section capable of controlling an image formation in two types of image forming modes of a first image forming mode where an image is formed at a first image forming speed by using all the multiple light sources, and a second image forming mode where the image is formed without using at least one of the multiple light sources at a second image forming speed slower than the first image forming speed, wherein the control section controls a light source which is not used in the second image forming mode to emit a laser beam onto outside of an image area.

Abstract: A method, apparatus, and medium for determining actuator signals for focusing a laser on a label surface of an optical disc. A plurality of virtual angular sectors are defined on the label surface. A single rotation of the disc is performed. During the rotation, the focus of the laser is sinusoidally swept from a baseline once per sector. During the rotation, a SUM signal indicative of a degree of focus of the laser on the label surface is measured at a plurality of angular positions of each sector. The actuator signals are derived from the measured SUM signals.

Abstract: The video data is parallel processed allowing for extremely fast video processing or a greatly reduced clock requirement for the video processing circuit. In operation, each video channel reads from main memory. This allows each video channel to track the laser directly. The Parallel video processor receives non-columnar pixel data, such as rows. The videoprocessor may support printers of any width without significantly increasing the size of the system.

Abstract: A drive circuit includes a drive element for supplying a drive current to a driven element; a control voltage generation circuit for outputting a control voltage to the drive element to generate the drive current through inputting a reference voltage; and a switch section for shutting down the reference voltage when the driven element is not driven so that the control voltage decreases to a level not to generate the drive current.

Abstract: A light emitting apparatus includes optical thyristors, a driver circuit that supplies a drive current to the thyristors so that the thyristors emit light, and a control circuit that controls the thyristors. Each thyristor includes an anode, a cathode connected to the ground, and a gate. The thyristor emits light when the drive current flows therethrough. The control circuit controls the gate, causing a control current to flow from the anode to the gate to turn on the thyristors. The control circuit applies a control voltage to the gate, the control voltage being higher than a voltage appearing across the gate and the cathode when the thyristor remains turned on.

Abstract: A driving device controls light emitting thyristors that each include a scanning circuit sequentially driving each of the plural stages of the light emitting thyristors by controlling scanning thyristors. Herein, terminals of each odd numbered stage of the scanning thyristors is commonly connected to a first clock terminal, and terminals of each even numbered stage of the scanning thyristors is commonly connected to a second clock terminal. A control terminal of a first stage scanning thyristor is connected to the second clock terminal, and another control terminal of a previous scanning thyristor is connected to the second control terminal of a subsequent scanning thyristor.

Abstract: An exposure device includes a plurality of light emitting elements, a load, a first supplying unit and a second supplying unit. The first supplying unit supplies a driving current to one of (i) light emitting elements used to form an image among the plurality of light emitting elements and (ii) the load, in accordance with a modulation signal. The first supplying unit supplies a bias current to the other. The second supplying unit supplies the bias current to light emitting elements not used to form the image among the plurality of light emitting elements, regardless of the modulation signal.

Abstract: An optical scanning apparatus capable of being applied to an image forming apparatus includes a light source which emits a light beam; a modulator which pulse-width modulates drive current supplied to the light source; and a current adding unit which adds a supplemental current to the pulse-width modulated drive current at the rising edge of a pulse thereof.

Abstract: A continuous-sheet printing tandem electrophotography system for printing a continuous sheet includes first and second electrophotography units. A first size of the continuous sheet is measured before an image printed by the first electrophotography unit with a first parameter value is fused on the continuous sheet. A second size of the continuous sheet is measured after the image printed by the first electrophotography unit is fused on the continuous sheet. The second electrophotography unit then prints the continuous sheet with a second parameter value that is determined by a size difference between the first and the second sizes. The first and the second sizes include a page length and a page width of the continuous sheet. The parameter values include a print speed, a polygon mirror rotating speed, a video clock frequency, and a laser power.

Abstract: A driver apparatus drives a plurality of light emitting thyristors. Each thyristor includes a cathode connected to the ground, an anode, and a gate. A gate driver circuit outputs a drive signal that electrically drives the gate. A level shifter circuit includes an input terminal connected to the driver circuit and an output terminal connected to the gate of the thyristor. The level shifter circuit operates such that the drive signal is shifted down in signal level and is outputted to the output terminal and a signal at the gate inputted to the output terminal is shifted down in signal level and is outputted to the input terminal. In response to the drive signal outputted from the driver circuit, a current supplying circuit supplies drive current to the anode of the thyristor such that the drive current flows from the anode to the cathode.

Abstract: A reference voltage generation circuit includes a first current-mirror circuit including a first MOS transistor connected to a first power source and a second MOS transistor of the first conductive type connected to the first power source; a second current-mirror circuit including a third MOS transistor and a fourth MOS transistor; a first resistor connected to the first node; a first bipolar transistor having a collector connected to the first resistor, an emitter connected to a second power source, and a base connected to the first node; a second bipolar transistor having a collector connected to the second node, an emitter connected to the second power source, and a base connected to the first bipolar transistor; a fifth MOS transistor connected between the first power source and an output terminal; and a third resistor connected between the output terminal and the second power source.

Abstract: Methods, algorithms, software, apparatuses and systems for processing image data for imaging devices having irregular scan paths (e.g., scan paths that deviate from a conventional horizontal and/or straight line). The irregular scan paths generally correspond to actual locations of a line of output from an image output device (e.g., a printer). The method generally includes steps of selecting one or more of the input pixels, correlating a location of the selected pixel with a location on an irregular scan path, and producing an adjusted pixel based on a value of the selected pixel, the location on the irregular scan path, and/or values of one or more pixels near the selected pixel. The present invention advantageously allows for processing an input image for an output device with an irregular scan path using only enough working memory for a relatively small number of pixel rows even if the irregular scan path traverses a relatively large number of rows in the output image.

Abstract: A drive device to drive a plurality of three-terminal light emitting elements includes a drive circuit. The drive circuit includes a first and second conductive type MOS transistor complementarily connected to each other and configured to drive three-terminal light emitting elements that are in conduction state based on a received drive signal. The first conductive type MOS transistor is formed in a substrate region and includes a channel formation region, which is a region wherein a channel is to be formed. An impurity with the same polarity as that of the substrate region is injected in the channel formation region.

Abstract: The invention relates to an optical printer head 12 provided with one or a plurality of light emitting element array units 3. The light emitting element array unit 3 is provided with a circuit board 30, a base member 33 supporting the circuit board 30, and a plurality of light emitting elements mounted onto the base member 33 and arranged in a row in main scanning directions M1 and M2. The base member 33 has a lower hygroscopic rate than the circuit board 30. The plurality of light emitting element array units 3 are arranged along the main scanning directions M1 and M2, for example, so that end portions 34 in adjacent light emitting element array units 3 are overlapped with each other in vertical-scanning directions S1 and S2.

Abstract: A laser driving unit drives a semiconductor laser apparatus including a plurality of light sources, includes a light detecting part to detect light emissions from the light sources, a driving current generator to generate a driving current based on an input signal, an auxiliary driving current generator to generate an auxiliary driving current in an initial time period of an ON-time of the driving current, and an auxiliary current set part to set an auxiliary amount of the auxiliary driving current to be added to the driving current, for each of the light sources, based on a difference between the light emissions detected by the light detecting part and a target light emission of the light sources.

Abstract: An exposure device includes plural light emitting elements that light in turn for exposure, plural driving elements that drive each of the light emitting elements and a time changing member that changes one time period of a switching signal to switch light emitting elements driven by the driving elements among the plurality of light emitting elements in turn from a reference time, depending on an image forming speed, wherein the time changing member changes the one time period from the reference time for some of the light emitting elements during one main scan, and maintains the one time period as the reference time for the remaining light emitting elements.

Abstract: An apparatus for switching and controlling the intensity of a laser beam directed toward a beam detect sensor for an image forming device. A printing power reference signal and a beam detect power reference signal is selectively connected to a laser driver through a first switch. A printing power reference holding capacitor and a beam detect power reference holding capacitor is selectively connected to the laser driver through a second switch that is controlled in tandem with the first switch. During each scan cycle, the output laser power is monitored and used to adjust one of the two holding capacitors based such that both the printing power and the beam detect power have a controlled reference.

Abstract: A recording head including: a non-electrically conductive support member; a base board provided above the support member, the base board being provided with light emitting elements for forming an image on a recording medium, a drive section for causing the light emitting elements to emit light, a first earth connection member provided at an end portion of the base board, and a second earth connection member provided at a location of a connection member, having one end connected to a control section for controlling the drive section and another end connected to drive section; a conducting member provided at a predetermined place relative to the support member and connected to an earth; a first conduction section conducting between the conducting member and the first earth connection member; and a second conduction section conducting between the conducting member and the second earth connection member.

Abstract: The light-emitting element head includes: a first signal supply unit supplying a first signal for sequentially specifying a plurality of light-emitting elements one by one as a control target for control in common to light-emitting element chips; a second signal supply unit supplying second signals for giving an instruction to emit or not to emit light to one of the elements specified as the control target to a set of light-emitting element chips so that each of the signals is supplied in common to plural light-emitting element chips belonging to each of N groups into which the set of chips are divided; and an enable signal supply unit that supplies enable signals for allowing the set of chips to receive the second signals which are different from one another so that the enable signals are supplied respectively to the chips belonging to each of the N groups.

Abstract: An optical scanning device 65 is adapted to bring a deflector mirror plane 651 into independent pivotal motions about a first axis and a second axis perpendicular to each other. A mirror driver section including a first axis driver and a second axis driver is so controlled as to bring the deflector mirror plane 651 into pivotal motion about the first axis thereby deflecting a light beam L for scanning along a main scan direction. On the other hand, the deflector mirror plane 651 is pivotally moved about the second axis thereby to adjust the scanned beam L for its position on a photosensitive member 2 with respect to a subscan direction. Thus, even if the scanned beam is deviated from a reference scan position with respect to the subscan direction due to component tolerances or assembly errors, such a deviation can be corrected.

Abstract: A drive circuit is provided for supplying a drive current to drive a plurality of driven elements each having two main electrodes. The drive circuit includes a switch circuit for receiving a drive signal; and a constant voltage circuit connected to the switch circuit for adjusting the drive current at a constant level.

Abstract: A method for laser marking eggs is disclosed which comprises using a machine vision system to monitor laser marking of eggs by a laser marking system, and adjusting one or more parameters of the laser marking system based upon determinations made by the machine vision system. Additionally, a system for laser marking eggs is disclosed which comprise a machine vision system and one or more control elements. The machine vision system is configured and arranged to monitor laser marking of eggs by a laser marking system, and the one or more control elements are configured and arranged to adjust one or more parameters of the laser marking system based upon determinations made by the machine vision system. Further, a system for laser marking eggs is disclosed comprising multiple laser marking apparatuses and a central server. The laser marking apparatuses are configured and arranged to perform laser marking jobs queued by local computers for laser marking eggs being packed by egg packing stations.

Abstract: An image forming apparatus forms a pattern image on a sheet by irradiating a photosensitive body with laser lights emitted from first to eighth laser light sources based on timing set in a displaying/setting section. As the pattern image, a combined pattern image in which a plurality of combined images are arranged continuously in the sub scanning direction, in each of which combined images two first line images are arranged apart from each other in the main scanning direction, and the second line image is arranged therebetween.

Abstract: Laser printers are plagued with an assortment of alignment issues. In color laser printers the issues are exacerbated. Variations in distance from the mirror to the drum can lines in different color planes to vary in size. Variations in angles in the facets of the mirror can cause alignment issues between lines. Even lack of synchronization between the dot clock and start of line indication can cause misalignment between rows. In addition, a cosine distortion occurs due to the non-constant linear velocity of the laser scan of a single line. A very high speed master clock can drive the laser scanning unit. By using a very high speed clock, the control circuitry has the resolution to compensate for many of these distortion types, by appropriately counting clock cycles and indicating such to the laser modulator.