Abstract: A printhead is provided having at least first and second rows of print nozzles. Each nozzle has first circuitry of a first type arranged on an opposite side of the nozzle as second circuitry of a second type. The respective positions of the first and second circuitry of each nozzle of the first row are rotated 180 degrees relative to the respective positions of the first and second circuitry of each nozzle of the second row.

Abstract: An optical sensor for identifying a subject includes a light absorption member with light absorption characteristics adjusted independently from the subject so that the optical sensor identifies the subject by optically identifying the light absorption member, a light emitting device for radiating reference light having a peak wavelength in an absorption wavelength region of the light absorption member to the subject, a light receiving device for receiving the reference light transmitted through the subject, and an integrated circuit board provided with the light emitting device and the light receiving device on a substrate face.

Abstract: There is provided a recording apparatus for receiving recording data from an electronic apparatus or a host computer activated by being supplied with a power source through an interface, and performing a recording operation on a recording medium by the use of a recording head. This recording apparatus comprises power source supplying means for supplying predetermined electric power to the electronic apparatus, detecting means for detecting that the electronic apparatus has been connected, and control mans for changing over the control of the recording operation when the detecting means has detected the connection or non-connection of the electronic apparatus. Also, there is provided an electronic apparatus for effecting communication with a first external device activated by being supplied with a power source through a first interface and a second external device connected thereto through a second interface, and performing an operation.

Abstract: A printhead is provided for an inkjet printer. The printhead includes a wafer assembly defining a plurality of spaced apart groups of ink supply channels and a plurality of groups of ink ejection nozzle arrangements in fluid communication with respective ink supply channel groups. Each ink ejection nozzle arrangement includes a nozzle chamber structure mounted to the wafer assembly. Each ink ejection nozzle arrangement also defines a nozzle chamber for receiving ink from an ink supply channel and a nozzle rim through which ink in the nozzle chamber can be ejected. An anchor extends from the wafer assembly in a location external to the nozzle chamber. An elongate thermal actuator mechanism extends from the anchor and into the nozzle chamber.

Abstract: An inkjet printer includes a print head having a plurality of nozzles; a plurality of ink cartridges storing inks of different colors, respectively, to be supplied to the print head; and a pressure applying section for applying pressure in an ejecting direction to the inks in the nozzles of the print head by supplying compressed air to the ink cartridges, and the pressure applying section has a pump for supplying compressed air to the ink cartridges through an air channel provided between the ink cartridges and said pump; and a charge tank provided in the air channel, for temporarily keeping the compressed air, and, after increasing the pressure in the ink cartridges, charge tank and air channel by the supply of compressed air from the pump, the compressed air is released to the print head and the pressure is applied to the inks in the nozzles of the print head.

Abstract: An ink jet recording apparatus that includes: a recording head that discharges an ink from a plurality of nozzles constituting a nozzle train to a recording medium; a cap that covers a nozzle surface of the recording head with a hollow cap member; and a wiper that wipes the nozzle surface of the recording head with a wiper member by a relative movement of the wiper member with respect to the recording head, wherein at least one of the wiper member and the nozzle surface comprises a removing portion that removes a foreign matter from the nozzle surface.

Abstract: An image forming apparatus includes a maintenance-recovery mechanism including a suction pump. The suction pump includes a tube, a housing, a pressing member, a rotating member, and a regulating member. The tube channels a liquid drawn from. a recording head through one end of the tube by the suction pump and discharges the liquid at another end of the tube. The housing includes an inner wall holding the tube along the inner wall. The rotating member includes a groove engaged with a shaft of the pressing member to guide the pressing member between a first position at which the pressing member presses the tube towards the inner wall of the housing while the pressing member moves along the tube and a second position at which the pressing member does not press the tube. The regulating member coaxially rotates with the rotating member to regulate movement of the pressing member in a circumferential direction.

Abstract: A nozzle protecting device 30 of an ink jet type recording apparatus has a cap 46 which covers nozzles of a recording head and a cap support member 47 which is connected to the cap 45 via a spring member 80. The distance between the cap 46 and the cap support member 47 can be changed by elastic deformation of the spring member 80. A vent hole 54 is formed in the cap 46. A valve seat 56 which covers the terminal portion of the vent hole 54 is provided. A valve body 58 is rotatably attached to the lower portion of the cap 46. The valve body 58 selectively abuts on and parts from the valve seat 56 in accordance with the distance between the cap 46 and the cap support member 47. As a result, the inside of the cap 46 is opened and closed to air via the vent hole 54.

Abstract: A liquid jet recording apparatus including a recording head configured to record with droplets, a carriage supporting the recording head and configured to scan a recording medium with the recording head in a direction crossing a direction of conveyance of the recording medium, the carriage being movable to a maintenance position, a holder provided in one of the recording head and the carriage, a recording liquid cartridge adapted to contain liquid for recording, the recording liquid cartridge being attachable to and detachable from the holder, and a guiding unit adapted to guide at least two different sides of the recording liquid cartridge, with respect to the carriage that moves to the maintenance position, to the inner wall surface in a vertical direction when the carriage moves and stops the recording liquid cartridge at the maintenance position where the recording liquid cartridge can be attached to or detached from the holder.

Abstract: A printer comprising a carriage, a guide rail and a print surface, the carriage being movable along the guide rail and carrying a printhead that faces the print surface and is movable in a direction normal to the plane of the print surface, wherein a stop or brake mechanism responsive to a movement of the printhead in said direction normal to the plane of the print surface is provided and adapted to stop the movement of the carriage.

Abstract: A liquid ejecting head with a nozzle forming member in which plural nozzle sequences formed by aligning nozzles configured to eject a liquid drop of recording liquid are arranged such that nozzles of respective sequences are provided in a zigzag pattern and a water-repellent layer comprising a resin layer is applied and formed on a surface thereof at a side of liquid drop ejection, is provided, wherein the respective nozzle sequences are arranged at an interval(s) which is/are not greater than a diameter of a nozzle.

Abstract: A method for updating a printing parameter of a printer includes a plurality of nozzles of a row of an inkjet print head of a printer simultaneously printing ink onto a print medium while the inkjet print head is moving along a first horizontal direction or a second horizontal direction opposite to the first horizontal direction; moving the printing medium along a vertical direction less than a center distance between two adjacent nozzles; updating the printing parameter of the printer according to a printing result of the print medium. The method can be adjusted to match resolution of an image having a higher resolution than the inkjet print head, also the method can perform printing adjustment even when the inkjet print head is out of alignment, in this way a more accurate printing parameter can be obtained.

Abstract: An ink-jet is disclosed, comprising a colorant, water, a polymeric compound which is comprised of a hydrophilic backbone having plural side chains and is capable of curing via the side chains upon exposure to an actinic ray and a fluorine-containing surfactant having a specific structure. An ink-jet recording method is also disclosed.

Abstract: The present invention provides an ink composition, and inkjet recording method, a printed material, a production method of a planographic printing plate, and a planographic printing plate. The ink composition of the present invention contains a cationically polymerizable compound, a compound that generates an acid when irradiated with a radiation ray, and an onium salt compound that generates an organic acid compound having a basic nitrogen atom when irradiated with a radiation ray.

Abstract: The invention provides an ink composition comprising (A) a polymerization initiator and (B) a (meth)acrylic acid ester having an alicyclic group as a substituent or amide having an alicyclic group as a substituent. The ink composition preferably further contains (D) a colorant and (E) a sensitizing dye. The ink composition is used for ink jet recording.

Abstract: An ink jet printhead nozzle arrangement includes a wafer substrate that defines side walls and an inlet opening of an ink chamber. Drive circuitry is arranged on the wafer substrate. A roof wall assembly defines a roof of the ink chamber and an ink ejection port in fluid communication with the ink chamber. The roof wall assembly includes a nozzle rim supported in general alignment with the inlet opening. A series of radially positioned actuators are each connected to the substrate to receive electrical drive signals, with free ends of the actuators terminating proximate the nozzle rim. The actuators are configured so that, on receipt of an electrical signal from the drive circuitry, said free ends of the actuators are displaced into the ink chamber to reduce a volume of the ink chamber and to eject ink from the ink ejection port.

Abstract: The liquid ejection apparatus includes: a liquid ejection head which has an ejection port ejecting liquid, and an energy application element applying energy to the liquid to be ejected from the ejection port; a liquid receiving device which is opposite to the ejection port and receives the liquid ejected from the ejection port, the liquid received by the liquid receiving device forming a liquid pool between the liquid receiving device and the ejection port; and a driving device which applies a drive signal to the energy application element in a state where the liquid pool has been formed, so as to agitate the liquid at least in a vicinity of the ejection port.

Abstract: An ink jet printhead that has a plurality of nozzles 3 and a chamber 7 corresponding to each nozzle respectively. At least one heater element 10 disposed in each chamber 7. Each nozzle defines a nozzle aperture that has a plane of symmetry extending perpendicular to the nozzle aperture. The heater element 10 is a suspended beam that is symmetrical about the plane of symmetry extending perpendicular to the nozzle aperture. Configuring the heater element and nozzle aperture to have a common plane of symmetry gives the nozzle a trajectory that is more likely to be along the central axis.

Abstract: Embodiments of the present invention relate to a non-planar deflection electrode(s) for use with an ink jet printer. More specifically, the high voltage and/or low voltage deflection electrode of the may include a non-planar configuration. The non-planar configuration may be achieved by providing the electrode with a convex surface, which faces the ink stream and the other electrode. By using a deflection electrode that has a non-planar configuration, at least a portion of the deflection electrodes may be positioned closer together without increasing the risk of arcing. The ability to place at least a portion of the deflection electrodes closer together may increase the strength of the electric deflection field, thereby allowing the length of the deflection electrodes to be decreased without adversely affecting their ability to deflect charged ink droplets to their intended location on a substrate.

Abstract: This invention relates to a liquid container, a liquid ejection device and a liquid container case, which may effectively use a liquid stored in the liquid container, and may be reduced in size in simple constitution. An ink cartridge as a liquid container includes a plurality of ink packs and a container case for storing the ink packs. Each ink pack includes an ink outlet member having an ink supply port, which is mounted on a bag part. The container case has a substantially box-shaped case body part and a lid case covering an opening. In the ink cartridge, the ink packs are inclined at an angle of q to the container case, and the ink packs are accommodated in the state of overlapping a part of the adjacent ink pack.

Abstract: Provided is a liquid injecting apparatus equipped with a liquid injecting head, which is mounted on a carriage and moved reciprocally in a widthwise direction of a target, and a valve unit, which is mounted on the carriage to be supplied with liquid via a supply passage from a liquid retainer and to supply liquid to the liquid injecting head. The valve unit has a pressure chamber connected to the liquid retainer via the supply passage; a valve, which opens or closes the supply passage to supply liquid to the pressure chamber; and a flexible film member, which is displaced based on a negative pressure generated as liquid in the pressure chamber decreases to thereby operate the valve.

Abstract: An information handling system dye sublimation printer stores paper in an enclosed tray that couples to the printer housing and transitions between a storage configuration and a print configuration. The storage configuration reduces the footprint of the printer by aligning with the length and width of the printer housing. The print configuration aligns the tray with a print mechanism to feed paper for printing of photographic information as an image transferred by the print mechanism. In one storage configuration embodiment, the tray removeably couples to the top of the printer housing to protect the printer's operating panel. In another embodiment, the printer housing removeably couples to the bottom of the printer housing. In another embodiment, a rotationally hinged mechanism connects the printer housing and the tray to transition between the storage and print configurations with reduced risk of separation of the tray from the printer.

Abstract: A method of curing radiation-curable fluid is described. In one example, the method includes emitting radiation from an array of light-emitting diodes towards ink to be cured. LEDs are cheap, light weight, highly efficient in their conversion of electrical power, and give effectively instant switching to full power. Another advantage is that the emission spectrum of an LED is sharply peaked around the nominal frequency. Thus LEDs give several advantages over conventional radiation sources such as mercury lamps. A low oxygen environment is preferably provided at the radiation source to accelerate the curing reaction. Also described are inks which are specially formulated to respond to the radiation emission spectrum of an LED.

Abstract: A digital ink jet printing process method comprising following procedures: 1. Choose the basic material, 2. Pre-process the basic material, 3. Print out graphics on basic materials directly; and, 4. After process on the surface of basic materials to protect the graphics on the surface of the basic materials; based on the procedures, choose the proper basic material to have the basic material with more variable colors, the graphics, colors are not limited, more saturated colors, better scratch-proof and water-proof; the graphics can stay on basic material longer with good weather fastness and grade in deposit standard.

Abstract: This invention discloses a magnet for use as a printing plate or printing head that is used for aligning flakes or particles in a paint or ink. A composite sheet or block of magnetizable material is selectively magnetized so that a magnet is formed within the sheet or block that has a shape of a predetermined image, logo, or indica. Dies are used to magnetize the magnetizable material and preferably the does contact the material to be magnetized. A pre-magnetized sheet such as a refrigerator magnet may be re-magnetized differently so that a magnetic image is encoded therein for use as a printing plate. Preferably the printing plate is flexible so that it can be formed to a curved surface of a cylinder or drum for printing. Conveniently these flexible magnets can be changed for other designs and placed on the same drum for use in printing.

Abstract: Xerographic machines can print documents that have unintentional streaking parallel to the process direction. There are many possible source of the streaking. Currently, the streaking is minimized by using a cross process direction dependent modulation, called a profile, to modulate a modulated light beam being scanned across the photoreceptor. The profile is purely a function of cross process direction position. The profile can minimize, and often eliminate, streaking for any one area coverage, but only for that one area coverage. Different profiles can be produced that work best for different area coverages. Choosing a profile from a group of profiles for use with each scan line can minimize parallel streaking for a wider range of area coverages.

Abstract: An image forming device includes a rotating polygon mirror and a correcting component that corrects misregistration of an image region in a predetermined direction. The correcting component carries out the correction by correcting image data used in modulating light beams reflected and deflected by any one reflecting surface among plural reflecting surfaces provided at the rotating polygon mirror, where the light beams scann a body-to-be-illuminated in the predetermined direction, correcting image data by each data unit used in modulating light beams which are reflected and deflected at the same reflecting surface, and correcting image data in accordance with a misregistration amount in the predetermined direction of the image region formed on the body-to-be-illuminated by the light beams which are reflected and deflected, where the misregistration amount is measured in advance for each reflecting surface of the rotating polygon mirror.

Abstract: A head moving mechanism includes a head connecting member, a contact member, and a linking mechanism. An LED array head is attached to the head connecting member. The contact member is movable in the vertical direction, and the linking mechanism moves the head connecting member in the vertical direction in association with the vertical movement of the contact member. When a process cartridge is mounted to a main casing, the contact member contacts the process cartridge and moves upward. This moves the LED array head toward a photosensitive drum. On the other hand, when the process cartridge is pulled out from the main casing, the contact member moves downward, moving the LED array head away from the photosensitive drum.

Abstract: Thermal printers and methods for operating a thermal printer that applies donor material from donor patches on a donor ribbon to a received medium, the donor material being organized into sets, each set including at least one colored donor material patch and a protective material donor patch. A non-visible light is applied to a location on the donor ribbon, and a portion of the non-visible light that is not absorbed by the donor ribbon is sensed. The sensed non-visible light determines whether the portion of the donor ribbon to which the non-visible light has been applied has unused protective donor material thereon.

Abstract: A high-quality image forming apparatus that is capable of accurately adjusting the size and position of an image during image formation on a second surface of a transfer material, even when there has been expansion/contraction of the transfer material due to thermal fixing after image formation on a first surface thereof, to thereby avoid image displacement during two-sided image formation and multiple image formation.

Abstract: An electronic device includes a text input device enabling a user to input text information, a predictive text device configured to determine at least one predictive text candidate on the basis of input text information, a camera device configured to capture a moving image of a user, a detecting device configured to detect at least one word or word part on the basis of a user's lip movement in the captured moving image, a determining device configured to determine at least one most likely text on the basis of the at least one predictive text candidate determined by the predictive text device and the at least one word or word part detected by the detecting device, and a display device configured to display the at least one most likely text determined by the determining device. Methods for generating text on such electronic equipment is also discussed.

Abstract: A mobile terminal including a sensing unit configured to detect a motion of the mobile terminal, and a controller configured to calculate at least one from a degree and a pattern of the terminal motion detected by the sensing unit, and to encrypt input data according to the calculated value.

Abstract: Disclosed is related to a contents providing system and mobile communication terminal therewith for providing pre-stored digital contents to the mobile communication terminal of a user, comprising: a controller for controlling an overall operation; an input unit for introducing an operation command from a user; a storage unit for storing data; a radio transceiver for carrying out a radio communication with the mobile communication network and receiving contents through the mobile communication network; a display unit for showing operational information and motion pictures; a digital-to-analog converter for transforming a digital signal into an analog signal for voice output; an amplifier for amplifying and transferring the analog signal converted in the digital-to-analog converter to a speaker; and an MPEG processor for decoding the contents received through the radio transceiver and adjusting a reproducing speed.

Abstract: A method and terminal for performing a video communication service where the operation mode of the mobile communication terminal switches to a screen sharing mode upon receipt of a screen sharing request from a user during a video communication, screen data selected according to user selection information in the screen sharing mode is output to a display unit, the screen data displayed on the display unit is acquired, and the acquired screen data is transmitted instead of the user's video data to a corresponding terminal performing the video communication.

Abstract: A videoconferencing method having corresponding apparatus and computer programs comprises receiving exchanging audiovisual data for a videoconference with a videoconference server; identifying a physical location of a videoconference client; and either sending an indicator of the location to the server, which obtains physical location video data for the location comprising satellite photographs of the location and sends the data to other videoconference clients, or obtaining the data and sending the data to the server, which sends the data to other videoconference clients in the videoconference.

Abstract: A method and a system for automatic scheduling of a conference in a network are provided. A conference is scheduled and organized, based on agenda and conference session parameters. The conference is scheduled on the basis of the signal received by the user input device, specifying the state of the conference sessions. Sessions are modified on the basis of the alerts generated. The participants of the conference are automatically informed about the modification of the sessions.

Abstract: Herein described is a system and method that tracks the face of a person engaged in a videophone conversation. In addition to performing facial tracking, the invention provides stabilization of facial images that are transmitted during the videophone conversation. The face is tracked by employing one or more algorithms that correlate videophone captured facial images against a stored facial image. The face may be better identified by way of employing one or more voice recognition algorithms. The one or more voice recognition algorithms may correlate utterances of the person engaged in a conversation to one or more stored utterances. The identified utterances are subsequently mapped to a stored facial image. In a representative embodiment, the system used for performing facial tracking and image stabilization comprises an image sensor, a lens, an actuator, and a controller/processor.

Abstract: Herein described is a system and method for modifying facial video transmitted from a first videophone to a second videophone during a videophone conversation. A videophone comprises a videophone image processing system (VIPS) that stores one or more preferred images. The one or more preferred images may comprise an image of a person presented in an attractive appearance. The one or more preferred images may comprise one or more avatars. Additionally, the VIPS may be used to incorporate one or more facial features of the person into a preferred image or avatar. Furthermore, a replacement background may be incorporated into the preferred image or avatar. The VIPS transmits a preferred image of a first speaker of a first videophone to a second speaker of a second videophone by capturing an actual image of the first speaker and substituting at least a portion of said actual image with a stored image.

Abstract: Methods and apparatus for a video surveillance system are provided. The system includes a pan/tilt/zoom video camera assembly and a processor configured to control the pan/tilt/zoom video camera assembly to generate a panoramic reference image of a selectable motion detection area, acquire images of the motion detection area, and determine a motion in the motion detection area using a comparison of the acquired images of the motion detection area and the panoramic reference image.

Abstract: A visual odometry system and method for a fixed or known calibration of an arbitrary number of cameras in monocular configuration is provided. Images collected from each of the cameras in this distributed aperture system have negligible or absolutely no overlap. The relative pose and configuration of the cameras with respect to each other are assumed to be known and provide a means for determining the three-dimensional poses of all the cameras constrained in any given single camera pose. The cameras may be arranged in different configurations for different applications and are made suitable for mounting on a vehicle or person undergoing general motion. A complete parallel architecture is provided in conjunction with the implementation of the visual odometry method, so that real-time processing can be achieved on a multi-CPU system.

Abstract: A device (100) enabling automatic detection of the index marks of an ophthalmic lens (10), includes a support (110) which is adapted in such a way as to receive the lens, and, on each side of the support, first elements (120) for the illumination of the ophthalmic lens installed on the support, and first elements (130) for analysis and acquisition of the light transmitted by the lens. The device also includes an activatable and deactivatable pattern filter (140) arranged between the first illuminating elements and the support.

Abstract: A 3-dimensional data preparing method, comprising a first step of continuously taking digital images of scenes in the surrounding when moving from a first point, which is a known point, via a second point, which is a known point, to a third point, which is an unknown point, a second step of generating tracking points from an image acquired at the first point, and sequentially specifying the tracking points by the pursuit of the points generated on the continuously acquired images, a third step of obtaining 3-dimensional data of the tracking points based on the result of orientation of the tracking points at the first point and at the second point and from position data of the first point and the second point, a fourth step of sequentially obtaining a position of the third point, i.e.

Abstract: Methods and systems for a video camera assembly are provided. The video camera assembly includes a video camera, a pan mechanism configured to rotate the video camera about a pan axis, a tilt mechanism coupled to the pan mechanism wherein the tilt mechanism is configured to rotate the video camera about a tilt axis, and a controller communicatively coupled to the pan and tilt mechanisms. The controller is configured to receive a first image of a view acquired from a first address, receive a second image of the view acquired from a second address wherein the second address is different from the first address, compare the first image to the second image, and determine an offset between the first address and the second address using the comparison.

Abstract: The present invention makes a privacy protection area set on a video frame always match a masking block for the privacy protection area, thereby preventing video images taken from the privacy protection area from being exposed. One embodiment of the invention sets a masking zone corresponding to a privacy protection area on a taken video frame, keeps examining if the set masking zone does not match the privacy protection area, and adjusts the position of the masking zone on the video frame if it is determined that the masking zone does not match the privacy protection area, thereby preventing video signals taken from the initially set privacy protection area from being outputted.

Abstract: A system mounted on a vehicle for detecting an obstruction on a surface of a window of the vehicle, a primary camera is mounted inside the vehicle behind the window. The primary camera is configured to acquire images of the environment through the window. A secondary camera is focused on an external surface of the window, and operates to image the obstruction. A portion of the window, i.e. window region is subtended respectively by the field of view of the primary camera and the field of view of the secondary camera. A processor processes respective sequences of image data from both the primary camera and the secondary camera.

Abstract: Methods and systems for a video surveillance system include a plurality of video cameras, each including a field of view, the cameras are configured to at least one of zoom for changing the camera field of view, tilt for rotating the camera about a horizontal tilt axis, and pan for rotating the camera about a vertical pan axis. The system also includes a processor configured to receive a signal indicative of an image in the field of view of at least one video camera, recognize a target using the received signal, determine a direction to the target from the cameras that recognize the target, and transmit the determined direction to other ones of the plurality of video cameras.

Abstract: An RF unit comprises a tuner, a demodulator and a mixer. At least the tuner and the mixer are disposed on separate first and second substrates. The RF unit further comprises a housing accommodating the first and second substrates. The first substrate and the second substrate are arranged on different levels inside the housing and maintain a predetermined distance between each other.

Abstract: Programmable video generation and analyzer including a video asset for generating video signals having a primary composite video module for producing different types of a primary video signal and outputting the primary video signal via output channels, and a secondary video source module for producing a secondary composite video signal and outputting the secondary composite video signal via output channels. The secondary video source module produces the secondary composite video signal in an identical or different format than the primary video signal and different than the primary video signal. An NTSC/PAL converter is included, for example, as part of the secondary video source module, for generating video in NTSC format and PAL format. The NTSC/PAL converter accepts a stream of data from the primary composite video module and the secondary video source module and converts it into Composite Baseband Video, Y/Pr/Pb Component Video, Y/C Video (S_Video) or RGB Video.

Abstract: A video projection calibration technique includes a first camera to view the video display screen from the projector side, and a second camera to view the video display screen from the viewing side. The first camera may be a lower resolution than the second camera. The combination of the two cameras permits the transfer functions of the projection system and the first camera to be characterized and reduced to a warping transform that may be stored by the control system. The presence of the warping transform would permit the lower resolution, first camera to perform image realignment after the video projection system is in use by an end user.

Abstract: The ratio is calculated between a first number of pixels and a second number of pixels on an image sensor. The first number of pixels is counted between two certain points projected on the image sensor from a first section of a plane. The second number of pixels is counted between two certain points projected on the image sensor from a second section, adjacent to the first section, of the plane. The number of pixels between two certain points increases if the image sensor gets closer to the plane, while the number of pixels between two certain points decreases if the image sensor gets remoter from the plane. The inclination of the image sensor can be determined relative to the plane based on the ratio between the two numbers of pixels. The attitude or inclination of the image sensor can in this manner be detected with a high accuracy.