Abstract: A printer comprises a first head which has first nozzles, a second head which has second nozzles each having a nozzle diameter larger than that of the first nozzle, and an ink cartridge which stores an ink to be supplied to the first and second heads. The first head is directly connected to the ink cartridge by means of a tube. The second head is connected to the first head by means of a tube, and thus the second head is connected to the ink cartridge via the first head. Accordingly, it is possible to shorten the tubes by connecting the ink cartridge and the two heads in series. Further, it is possible to decrease the frequency of the recovery operation by arranging, on the downstream side in the liquid supply direction, the head in which the jetting failure is hardly caused.

Abstract: A fluid discharging apparatus including a head that has a nozzle which discharges fluid from the nozzle and a sheet shaped wiping member for wiping a nozzle surface of the head. The wiping member is moved relative to the nozzle surface so that portions of the wiping member are sequentially in contact with the nozzle surface in order to wipe the nozzle surface.

Abstract: An ink jet printer for printing on a substrate comprising a first print head outputting ink and defining an ink meniscus; a platen operable to carry the substrate; a support structure; and a print head mechanism coupled to the support structure and carrying the first print head. The print head mechanism moves the first print head relative to the platen. A controller controls the print head mechanism such that at least one of a predetermined acceleration and predetermined deceleration of the print head mechanism is achieved such that the ink meniscus is operably maintained.

Abstract: A rotary inkjet imaging apparatus includes a carrier movable bi-directionally along a linear guide path defined adjacent to a curved print zone and extending parallel to a longitudinal axis thereof, and an inkjet printhead disc having a body and at least one and preferably multiple printhead chips integrated into its perimeter. The disc body is supported by the carrier for undergoing movement within the curved print zone along a curved path winding about a central axis extending parallel to the guide path and coaxial with the longitudinal axis of the curved print zone such that the disc body moves about the central axis multiple revolutions and the printhead chips print on the page concurrently as the carrier unidirectionally moves along the linear guide path and the disc body moves within the curved print zone and through portions of the curved path in which the chips face toward the page.

Abstract: Provided is a method for manufacturing a nozzle plate which has a through hole having an ejection port. In the method, the through hole, which has one opening as an ejection port for ejecting the liquid, is arranged on a Si substrate by an anisotropic etching method wherein etching and side wall protection film formation are alternately repeated to the Si substrate and the following steps are performed in the following order; forming a film to be an etching mask on a surface of the Si substrate whereupon the ejection port is to be formed, forming the etching mask pattern having an opening for forming the thorough hole by performing photolithography and etching to a film to be the etching mask, and performing the etching by the anisotropic etching method by satisfying the conditional expression.

Abstract: Provided are an inkjet printhead and a method of manufacturing the same. The inkjet printhead includes: a substrate including an ink feed hole; a chamber layer formed on the substrate and including a plurality of ink chambers in which ink supplied from the ink feed hole may be filled; and a nozzle layer formed on the chamber layer and including a plurality of nozzles through which ink may be ejected, wherein the chamber layer and the nozzle layer are respectively formed of cured products of a first negative photoresist composition and a second negative photoresist composition, wherein the first negative photoresist composition and the second negative photoresist composition include a bisphenol-A novolac epoxy resin represented by Formula 1; at least one epoxy resin selected from a first epoxy resin represented by Formula 2, and a second epoxy resin represented by Formula 3; a cationic photoinitiator; and a solvent.

Abstract: The present invention relates to an ink-cartridge loading/unloading apparatus used in various devices onto which an ink-cartridge is capable of minimizing damage of a flexible printed wiring board of the ink-cartridge. The ink-cartridge loading/unloading apparatus according to the present invention comprises a vertically extending main body having a support portion; a mounting part connected to the front surface of the main body; and a coupling part connecting the main body and the mounting part. A metal coupling bar or a magnetic substance inserted in a coupling bar is attached to an electromagnet provided in a side of the main body, whereby the mounting part is coupled to the main body. The mounting part is released from a coupled state by pressing a button bar with an external force, and an elastic means is further provided between the mounting part and the main body.

Abstract: A recording apparatus includes a head set lever which fixes a head cartridge to a carriage section. The head set lever is movable between a first position at which the head cartridge is fixed to the carriage section and a second position at which mounting and removal of the head cartridge on and from the carriage section is permitted. Attachment of an ink tank to the head cartridge is inhibited when the head cartridge is mounted on the carriage section and the head set lever is arranged at a position other than the first position.

Abstract: A method of ejecting droplets of liquid from a paired drop ejector, the method includes the steps of providing a chamber having a dividing wall that forms a first and second portion and the first portion includes a first nozzle mated with a first heater and the second portion includes a second nozzle mated with a second heater; providing liquid to the first portion and second portions of the chamber through an open end of the enclosure; providing a first electrical pulse to the first heater to provide thermal energy for ejecting a droplet of liquid from the first nozzle; and providing a second electrical pulse to the second heater to provide thermal energy for ejecting a droplet of liquid from the second nozzle; wherein the second electrical pulse is delayed relative to the first electrical pulse by a first predetermined delay time.

Abstract: There is provided a printing head which improves durability and increases reliability by reducing stress occurring in a bonding part between an electrode pad and an inner lead at cooling. The electrode pad and the inner lead are electrically connected in such a manner that in the bonding portions between the electrode pad and a stud bump, only a part of contacting portions between the electrode and the stud bump is bonded.

Abstract: An ink jet printing head is attachable to/detachable from an ink jet printing apparatus and includes an electric wiring member formed of a TAB tape to which terminals are provided, and has a wiring exposed through an end section of the electric wiring member, the terminals accepting signals by making contact with a connection portion on the part of the apparatus when the head is attached to the apparatus. An opening is provided in a supporting member which supports the electric wiring member, the opening extending in a direction traversing an area where the electric wiring member is supported. Thereby, movement of liquid, such as water and ink, to the end section is blocked, the liquid moving through a gap between a back surface of the electric wiring member and a surface of the supporting member.

Abstract: The present invention provides a print head that allows the characteristics of ejected ink to be adjusted for each ejection port in spite of a variation in the distance from an ink supply port to the heating element. In the print head according to the present invention, the area of the heating element decreases with increasing distance from the ink supply port and increases with decreasing distance from the ink supply port. The heating element is shaped like a rectangle that is longer in a direction orthogonal to a direction in which the plurality of ejection ports are arranged than in the direction in which the plurality of ejection ports are arranged. The aspect ratio of the heating element depends on the length of an ink channel through which ink is introduced into the bubbling chamber.

Abstract: A liquid ejection apparatus includes liquid cartridges, each of which includes a liquid container and a pressure chamber, the liquid container having a flexible portion and storing liquid therein, and the pressure chamber applying pressure to the flexible portion of the liquid container; a liquid ejection head, which ejects the liquid; liquid flow paths, which communicate the liquid containers with the liquid ejection head; and an air supply member, which supplies pressurized air to the pressure chambers for compressing the flexible portions so as to supply the liquid from the liquid containers to the liquid flow paths. The air supply member includes: a distribution member, which has an air intake portion for introducing the pressurized air, and air outlet portions for distributing the pressurized air to the liquid cartridges, and branch flow paths, which respectively communicate the air outlet portions with the pressure chambers of the liquid cartridges.

Abstract: A liquid ejection head includes a flow channel-forming substrate having a plurality of pressure-generating chambers communicated with nozzles for ejecting droplets, the pressure-generating chambers being arranged in parallel with each other; a plurality of pressure-applying units for applying pressure to interiors of the pressure-generating chambers; and a joining substrate joined onto one surface of the flow channel-forming substrate. The flow channel-forming substrate includes a silicon single crystal substrate having a (110) plane orientation and has a side surface extending in a longitudinal direction of the pressure-generating chambers, the side surface being composed of a first (111) plane perpendicular to a (110) plane.

Abstract: A liquid ejecting head includes pressure generation elements that apply pressure change to liquid retained in corresponding pressure generation chambers to discharge the liquid from corresponding nozzle openings. Each of the pressure generation elements is fixed to a fixation plate. Nozzle lines include nozzle openings arrayed in a line. An electrical signal is sent through a flexible substrate from the outside to the pressure generation chambers. Pressure generation elements associated with the pressure generation chambers are fixed to the fixation plate, with the fixation plate being positioned between the pressure generation elements of each of two parallel nozzle lines. A wiring portion is formed at one end part of the fixation plate opposite to the other end that is closer to the pressure generation chambers. The flexible substrate is connected to the wiring portion.

Abstract: For printing, the principle of the continuous deflected jet is used: a device discharges a continuous stream of a liquid, which is deflected by an electric field created by a plurality of deflecting electrodes and directed toward a gutter. The printing of drops is performed by fragmenting the continuous jet into a segment formed opposite a shield electrode upstream of the deflecting electrode, so that the segment is not deflected and can be directed toward a substrate. The deflection electrodes are separated by an insulator and a variable potential is applied to each electrode; the potential for the entire set of electrodes cancels out such that the jet is not charged.

Abstract: A pressure buffer is disposed in an ink supply path that connects an ink supply source to an ink-jet head to suppress pressure fluctuations due to vibrations created by movement of a carriage. The pressure buffer includes a chamber having an ink flow inlet through which ink flows from the ink supply source into the chamber and an ink flow outlet through which the ink flows from the chamber to the ink-jet head. A partition wall disposed within the chamber extends at least partly along a side wall of the chamber to define an ink flow path that communicates at its upper end with the chamber and at its lower end with the ink flow outlet. A through-opening is provided in the partition wall in the vicinity of the ink flow outlet and through which the ink flows between the ink flow path and the chamber to suppress pressure fluctuations in the ink flow path. Alternatively, an air pocket may be provided in the partition wall in the vicinity of the ink flow outlet to reduce presure fluctuations in the ink flow path.

Abstract: A liquid discharge device may be provided with a discharge head, a sub tank comprising a first member; and a liquid replenishment device comprising a second member to be connected to a main tank. The second member is capable of being connected to and disconnected from the first member. The liquid within the main tank is supplied to the sub tank when the second member is in a connected state with the first member. The first member comprises a first liquid path and a first valve biased in a direction where the first liquid path is closed. The second member comprises a second liquid path and a second valve biased in a direction where the second liquid path is closed. The first member and the second member may be configured to open the second liquid path first, and then open the first liquid path in a case where the second member is to be connected to the first member.

Abstract: The inkjet recording apparatus includes: print heads each of which has ejection ports through which ink is ejected; main tanks each of which stores the ink; ink supply channels which respectively connect the main tanks with the print heads; subsidiary tanks which are arranged in the ink supply channels and each of which includes an external case and an ink accommodating member that is flexible and arranged in the external case, the ink being supplied from the main tanks to the print heads through the ink supply channels and the ink accommodating members in the subsidiary tanks; a pressure buffer which is connected to spaces in the subsidiary tanks between the external cases and the ink accommodating members; a pressure reducing pump which reduces a pressure Pb inside the pressure buffer; differential pressure valves which are respectively attached to the subsidiary tanks so as to connect the spaces in the subsidiary tanks with an atmosphere; a first pressure gage which measures the pressure Pb inside the pres

Abstract: An ink jet recording apparatus supplying ink from a main tank to a head via a sub tank. The sub tank has two flow paths communicating with the main tank, an atmosphere communicating part, and a liquid exit part to the head. The liquid in the sub tank is maintained at a constant liquid level position by selecting, between the two flow paths, the flow path having a lower flow path resistance. Thus, the ink jet recording apparatus can store a predetermined amount of liquid stably in the sub tank. The ink jet recording apparatus and the liquid supply apparatus are capable, even when the main tank is detached or the ink therein is exhausted, of continuing the recording for a predetermined time or number of sheets, utilizing the ink in the sub tank.

Abstract: The back pressure of an ink tank is controlled. A porous body is arranged inside the ink tank, the lower end of the porous body contacts an ink, and the ink ascends inside the porous body due to a capillary force. The upper end of the porous body is not immersed in the ink, and a maximum ascending force acts upon the ink stored in the ink tank. Therefore, the ink does not leak from a discharge head located lower than the ink tank. Further, because the ink is accumulated under the porous body and the amount of the ink contacting the porous body is small, components of the ink are less susceptible to deterioration.

Abstract: A piercing method for forming an opening in a cover film welded to an ink cartridge in such a manner as to cover first and second ink inlet holes is provided. The method includes: forming a cut in the cover film in such a manner as to provide a cut piece supported in a cantilever manner in a covering area of the cover film that covers the first and second ink inlet hole; and forming the opening in the cover film by causing the cut piece to hang down in the first and second ink inlet holes.

Abstract: An ink supply device includes a cartridge mounting portion for an ink cartridge. The ink cartridge includes: an ink chamber including a hole; and a cover configured to cover the hole. The cartridge mounting portion includes a cylinder extending in a horizontal direction and is configured to mount thereon the ink cartridge while opening the cover by the cylinder. The cylinder includes a tip surface including: a first contact surface provided in at least an entire first region of the tip surface and configured to contact the cover, the first region being located above an upper end of an inner surface of the cylinder and; a second contact surface provided in a second region of the tip surface other than the first region and configured to contact the cover, and a passage provided in the second region of the tip surface to extend in a radial direction of the cylinder to allow an inner space of the cylinder to communicate with an outside.

Abstract: Inkjet printing system with at least one ink cartridge and an associated ink cartridge receptacle in which a special ink cartridge exchange device can be omitted, wherein the ink cartridge is modified by a guide pin that is fastened on the convexity of the ink cartridge, or between convexity and top of said ink cartridge, and projects only to one side beyond the flat side wall for the purpose of guiding the ink cartridge, and slides along in a wall of the ink cartridge receptacle; wherein, given an inserted ink cartridge, a leaf spring is pre-tensioned in each cavity of the cartridge receptacle of the ink cartridge receptacle that is provided for an ink cartridge; and via elastic force the exchange of the ink cartridge is assisted when the locking nose and the locking element of the ink cartridge receptacle disengage via manual pressure; and the ink cartridge is pivoted on an axis running near and parallel to the guide pin in order to release the ink cartridge; wherein the separation of the lower rear edge of

Abstract: An ink cartridge has an ink bag which changes in thickness in accordance with a change in an amount of ink. The bag is accommodated in a housing having a guide groove and a window portion. A plate is mounted on the bag for movement therewith and has a pin undergoing movement in the guide groove during movement of the plate. A reflecting plate with a first reflectivity is displayed by the window when bag contains ink. A slide member has a reflecting portion with a second reflectivity different from the first reflectivity and engages the plate pin for sliding movement relative to the housing during movement of plate pin. In a first position relative to the housing, the slide member does not cover the window portion and the reflecting plate is displayed from the window portion which corresponds to a state in which the bag contains ink.

Abstract: An inkjet printing cartridge capable of ejecting miniaturized ink droplets in a stable manner while avoiding the complexity of the structure and control as well as suppressing the cost rise. For this purpose, the inkjet printing cartridge is formed of a material having the permeability to liquid and gas, and the ink supply path for supplying ink to the ejection opening having a relatively small ejection amount is arranged adjacent to other ink supply paths via walls.

Abstract: A printer includes a set cover pivotally movably provided on a carriage. The cover can be set in a closed state in which the cover presses a head of the cartridge housed in the housing portion and an open state in which the cover opens the housing portion when the cartridge is replaced. A release lever is subjected to a bias force so as to protrude from an inner wall surface of the housing portion. The release lever is movable against the bias force. The release lever comes into contact with an end of the cartridge which faces the bottom surface when the cartridge is inserted into the housing portion. The release lever contacts the rear surface of the cartridge housed in the housing portion. The bias force is stronger when the cover is in the open state than when the cover is in the closed state.

Abstract: A check valve unit is provided for a high-speed phase change ink image producing machine between a reservoir for receiving and holding a volume of melted ink from a source and a receiving unit, which may be a printhead system. The check valve unit includes a plurality of ball elements trapped between upper and lower housings defining a like plurality of inlet and discharge passageways. The passageways are configured to optimize flow of melted ink through the unit during charging of the secondary reservoir. The check valve unit is scalable as to size and number of reservoirs for a particular application. The unit further incorporates features that simplify the manufacturing and assembly process while maintaining optimal performance.

Abstract: An ink delivery system of a phase change ink imaging device more effectively guides properly configured solid ink sticks from a first end of a feed chute to a melting device at a second end of the feed chute. The feed chute may include a sensor to detect coded sensor features on the properly configured solid ink sticks traveling along the feed chute and an obstructor configured to block improperly configured solid ink sticks inserted into the first end of the feed chute.

Abstract: In order to prevent, in an operation for circulating liquid, an ejection port from sucking air or the ejection port from pushing out liquid, the subtank for temporally storing ink to be supplied to the ink jet head includes the air communication passage opened or closed by the air communication valve. The ink jet head is communicated with the subtank by the first passage and the second passage to constitute one circulation passage. In order to circulate the ink in the subtank into the common liquid chamber, the main pump is energized while the air communication valve is being closed. When the circulation operation is stopped, the air communication valve is opened immediately after the stoppage of the main pump, thereby eliminating the differential pressure between the common liquid chamber and the subtank within a short period of time.

Abstract: A system for recycling waste phase change ink in a phase change ink imaging device includes a waste ink collector positioned within a phase change ink imaging device to collect waste phase change ink produced by a printhead in the phase change ink imaging device. The waste ink collector includes a heater for heating the waste phase change ink in the collector to at least a phase change ink melting temperature. A waste phase change ink conveyor is configured to convey melted waste phase change ink from the waste ink collector to an ink reservoir for the printhead.

Abstract: Ink jet printheads and printhead components having a body that include a flow path, a piezoelectric actuator having a piezoelectric layer fixed to the body and an impedance feature in the flow path are described. The impedance feature includes a plurality of posts arranged in a first row, at least one post in the first row of posts having a downstream surface that is concave.

Abstract: Described herein is a method for unique marking of various materials that can be obtained using an ink formulated with micronized microparticles and/or microencapsulated microdrops of various nature dispersed in a suitable vehicle; said ink, once applied to each individual product, forms an original and distinctive map.

Abstract: Printing systems including top registration plates and electromagnetic-curable inkjet print heads are described including methods for setting the intensity of the related electromagnetic sources. The printer includes a top registration plate that includes a plurality of registration plate print head openings, each opening adjacent to the registration plate. The transparent area is downstream of a UV light source and located above a media ski. In an alternative configuration, the top registration plate includes a transparent area that is adjacent to an opaque area of the registration plate. The transparent area is downstream of the UV light source and located above a media ski and below a light catch used to prevent the UV light from reaching the print heads in the printer.

Abstract: An imaging device includes a source of a substantially continuous web of media, and a web transport system configured to transport the continuous web from the source along a web path having a print zone. At least one printhead arranged along the web path in the print zone and configured to deposit ink onto the web to form images. A preheating system is positioned along the web path between the source and the print zone. The preheating system includes a first heating stage and a second heating stage. The first heating stage has at least one heater configured to heat the web to an initial preheat temperature prior to reaching the second stage. The second stage includes at least one heater configured to reduce a temperature of the web from the initial preheat temperature to a target temperature for the preheating system.

Abstract: An inkjet printer includes a printing head configured to eject solvent ink from nozzles of the printing head on a medium at a printing position. A medium is made of a polyvinyl chloride film. The solvent ink includes an organic pigment of from 3 to 7 weight %, a resin of 15 weight % or less, and solvents. A print heater is configured to heat the medium at the printing position. The print heater is arranged separately from a pre-heater. A temperature controller is configured to control a pre-heater heating temperature of the pre-heater and a print heater heating temperature of the print heater such that a surface temperature of the medium at the printing position becomes within a range of from 30° C. to 70° C.

Abstract: An image forming element includes an image drum including a plurality of ring electrodes and a slot. The plurality of ring electrodes are formed to be spaced apart from one another on a circumference of the image drum. The slot is formed in a longitudinal direction on the image drum. A connecting member includes a plurality of connecting electrodes and is disposed inside the image drum so that an end of the connecting member is received in the slot. The connecting electrodes are electrically connected with the ring electrodes one to one on the same line.

Abstract: An apparatus (100) and method that meters fluid film in an ink jet printing system is disclosed. The apparatus can include a source of fluid film (110) and a source metering assembly (120) rotatably supported in the apparatus. The source metering assembly can have a source metering assembly surface (122) coupled to the source of fluid film and the source metering assembly surface can be configured to transport fluid film from the source of fluid film. The apparatus can include a donor assembly (140) rotatably supported in the apparatus, where the donor assembly can have a donor assembly surface (142) coupled to the source metering assembly surface and the donor assembly surface can be configured to transport fluid film from the source metering assembly surface. The apparatus can include an ink jet printhead (195) configured to emit ink and a print assembly (170) rotatably supported in the apparatus.

Abstract: An image recording apparatus includes a recording head, first and second rollers, an endless conveyor belt wound around the first and second rollers to convey a recording medium from the first to the second roller, a first adsorber giving adsorptivity for the recording medium toward an outer surface of the conveyor belt at least in a region thereof opposed to the recording head, a third roller disposed at a position opposite to the first roller across the second roller, and an endless separation belt wound around the second and third rollers. An outer surface of the endless separation belt has adsorptivity lower than the adsorptivity given by the first adsorber. The endless separation belt receives the recording medium from the conveyor belt and conveys the recording medium from the second roller to the third roller while supporting the recording medium on the surface thereof.

Abstract: An image forming apparatus includes a circulating transfer path for transferring a sheet. The image forming apparatus is capable of forming images on both surfaces of the sheet by: transferring the sheet having an image formed on a first surface thereof along the circulating transfer path; and forming another image on a second surface of the sheet after the transfer. The circulating transfer path is utilized for securing time taken for the sheet having an image formed thereon to dry.

Abstract: An inkjet recording apparatus includes: a feeder which contains a recording medium and feeds the recording medium to a conveyer; the conveyer which conveys in a first direction the recording medium fed by the feeder; an inkjet head having an ejection face on which an ejection region is formed, the ejection region having a plurality of ink ejection openings arranged along a second direction perpendicular to the first direction; a detection unit which detects one end of the recording medium in the second direction; and a mover which moves the inkjet head in the second direction in accordance with the position of the one end of the recording medium detected by the detection unit.

Abstract: A contact lens includes at least two focal lengths, a single lower bearing surface capable of allowing the lens to be translated relative to an eye, and an area placed in the lower portion of the lens, the area having an outer face connected to a remainder of the outer face of the lens via a recess and the area having an inner face indistinguishable from the rest of an inner face of the lens, where the recess defines the lower bearing surface, and where the area is thin with an average thickness of the same order of magnitude as a thickness of an upper edge of said lens.

Abstract: A progressive ophthalmic lens for the correction of myopia, that comprises an upper area in which the correction is adapted for peripheral vision of the wearer. Such a lens reduces the risk of long term worsening of myopia for the lens wearer by reducing the defocalisation of an image formed on the retina outside the foveolar area. Also disclosed is a method for making such a lens. According to one improvement, the correction of myopia for the peripheral vision in the upper area of the lens is further adjusted based on a tendency of the wearer to turn the eyes or the head for watching an eccentric object.

Abstract: An object is to reduce the inconvenience given to the binocular vision function when wearing and using spectacles making use of a pair of progressive power lenses having different distance dioptric power for right and left. For this reason, the present invention associates, in a pair of progressive power lenses corresponding to the right and left eyes, an average dioptric power distribution and an astigmatism distribution determined from prescribed dioptric power and a wear state of one of the progressive power lenses with an average dioptric power distribution and an astigmatism distribution determined from prescribed dioptric power and a wear state of the other progressive power lens, and thereby average dioptric power distributions and astigmatism distributions of the respective progressive power lenses are changed.

Abstract: A saccadic motion detection system comprised of an optical system that focuses light reflected or emitted from the subject's eye onto an optical navigation chip, which connects to circuitry configured to convert analog light from the eye to digital representations motion of the eye, including saccadic eye movement and processes the information received thereby.

Abstract: A system for providing vision contains an aberrometer, a wavefront sensor, and a transfer optical system. The aberrometer is configured to measure a received wavefront. The aberrometer includes a wavefront sensor and a transfer optical system for transferring an input wavefront so as to the provide the received wavefront at or near the wavefront sensor. The system also includes a processor in communication with the aberrometer, a readable memory, and instructions located within the memory. The readable memory contains one or more system error parameters and instructions for calculating the input wavefront based on the received wavefront and the one or more system error parameters.

Abstract: A method for static visual field scanning apparatus including: a step of visual field scanning screen generating means; step of scanning region setting means; step of fixation image displaying and controlling means; step of scan line setting means; step of scanning point setting means; step of visual target displaying and controlling means; step of the first detection means; step of the second detection means; step of visual field mapping screen generating means; step of immediate post first detection scan continuation means; step of immediate post second detection scan continuation means; step of visual target display coordinates storing means; step of visual target perception inability symbol mapping means; step of the first completion judgement means; step of the second completion judgement means; step of post first completion judgement the next scanning point calculation means; and step of post second completion judgement the next scanning point calculation means.

Abstract: An apparatus and method for stereoscopic 3D image projection and viewing using a single projection source, alternating polarization, and passive eyewear. This approach is applicable to frame sequential video created using existing 3D graphics APIs, as well as other video signal formats, and is compatible with existing digital light processor (DLP) technology for both front and rear projection systems. A alternating polarizer filter actuator in the form of a closed feedback loop with pulse width modulated control is used to modulate the projected image. A preferred embodiment enables an existing DLP projection system to be enhanced with 3D capability.

Abstract: In a light projection system, potentially hierarchical levels of light intensity control ensure proper laser-light output intensity, color channel intensity, white point, left/right image intensity balancing, or combinations thereof. The light projection system can include a light intensity sensor in an image path, in a light-source subsystem light-dump path, in a light-modulation subsystem light-dump path, in a position to measure light leaked from optical components, or combinations thereof.

Abstract: A light engine for use in a projector, comprising an adjustable convergence mechanism for fine adjusting the relative positions of red, green and blue channel sub-assemblies. In one embodiment, motors are mounted on fixed elements of the sub-assemblies for driving movable elements thereof, including imaging devices thereof such as digital micromirror devices. In another embodiment, manual adjustment screws are provided in place of the motors, and wedge locking mechanisms are provided for driving and locking the position of the movable elements imaging devices mounted thereon.