Abstract: A recording apparatus for effecting recording by scanningly moving a recording head, wherein the apparatus is provided with a group of a plurality of arrays each including a plurality of nozzles, wherein the group is responsive to one-color recording data, includes selecting means for selecting a block of a predetermined number of the nozzles in the nozzle array in synchronism with cyclic signals; driving means for driving the nozzles in the block selected by the selecting means; managing means for managing information of the block selected by the selecting means, for each group of the nozzle arrays; generating means for generating, for each nozzle array, driving data including information indicative of a block to be selected by the selecting means and block data corresponding to the block, on the basis of the information of the block managed by the managing means; and transfer means for transferring the driving data generated by the generating means to the recording head.

Abstract: A method for recording an image based on image data in a recording region of a recording medium being transported in a predetermined transportation direction includes forming a first reference mark in a recordable region, including the recording region, of the recording medium using a first colored liquid containing a colorant; supplying an uncolored liquid containing no colorant uniformly over the entire recordable region of the recording medium; forming a second reference mark in the recordable region of the recording medium using a second colored liquid containing a colorant; detecting the amount of misalignment between the first reference mark and the second reference mark; calculating the total amount, excluding the content of the colorant, of first colored liquid to be used to record the image based on the image data on the recording medium for each unit area of the recording region of the recording medium.

Abstract: A pressure regulating mechanism which includes a pressure regulating chamber that introduces a liquid from a liquid supply source through an inlet port, stores the liquid, and discharges the stored liquid to an object through an outlet port, an on/off valve, a pressure receiving member that is provided to seal an opening surface of the pressure regulating chamber, a reduced-pressure space portion adjacent to the regulating chamber with a pressure that may be reduced to be less than the pressure of the pressure regulating chamber, and a partition wall disposed between the pressure regulating chamber and reduced-pressure space portion, wherein gas is capable of passing through the partition wall using the a difference in pressure between the reduced-pressure space and pressure regulating chamber and discharged to the reduced-pressure space portion.

Abstract: A compact and highly reliable recording head enabling precise detection of temperature information for each nozzle and rapid as well as highly accurate detection of nozzles with a discharge defect can be achieved. An electrothermal transducing member is provided on a substrate to generate heat energy for discharging liquid from a discharge port. A temperature detecting circuit includes a temperature detecting element for measuring a temperature of the transducing member. The temperature detection circuit includes a constant current circuit, a voltage detecting circuit, and a switching element.

Abstract: A printer 240 calculates the amount of ink used only for printing as a number of discharged ink shots, and sends this shot count with the printer serial number and ink cartridge ID to a server 220. The server 220 saves the shot count, printer serial number, ink cartridge ID, and an error correction code as status information. The server 220 or server upstream from the server 220 can reliably determine the number of ink shots used by the printer 240 only for printing from this status information.

Abstract: An image forming apparatus according to an embodiment of the invention includes: an image generating unit configured to generate an image to be printed on a recording paper; a paper type designating unit configured for a user to directly designate a type of the recording paper or to designate automatic identification of a type of the recording paper; a paper type identification device configured to identify the type of the recording paper presented by the user when automatic identification of the type of the recording paper is designated by the paper type designating unit; and a printing unit configured to print the image generated by the image generating unit onto the recording paper in accordance with the type of the recording paper identified by the paper type identification device.

Abstract: A method of calculating a correction value includes: forming a test pattern by ejecting a liquid by a liquid ejecting apparatus, which has a first nozzle row in which a plurality of nozzles ejecting the liquid to a medium are arranged in a predetermined direction and a second nozzle row in which a plurality of nozzles ejecting the liquid to the medium are arranged in the predetermined direction, the second nozzle row being disposed so that an end portion on one side thereof in the predetermined direction overlaps with an end portion on the other side of the first nozzle row in the predetermined direction, to an area of the medium corresponding to certain pixel data on the basis of the certain pixel data from first nozzles belonging to the end portion on the other side of the first nozzle row and second nozzles belonging to the end portion on the one side of the second nozzle row; acquiring a read-out gray scale value by allowing a scanner to read-out the test pattern; and calculating a correction value used t

Abstract: In an ink jet head using a thermal energy for ejecting ink, this invention aims to reliably and uniformly remove kogations deposited on a heat application portion in contact with the ink. To realize this objective, the upper protective layer is arranged in an area including the heat application portion so that it can be electrically connected to serve as an electrode which causes an electrochemical reaction with the ink. The upper protective layer is formed of a material containing a metal which is dissolved by the electrochemical reaction and which does not form, on heating, an oxide film which hinders the dissolution. With this arrangement, a reliable electrochemical reaction can be produced to dissolve a surface layer of the upper protective layer, thereby removing kogations on the heat application portion reliably and uniformly.

Abstract: This patent specification describes a droplet-ejecting head including a nozzle substrate having a plurality of nozzles for ejecting droplets, and an actuator configured to be driven to generate energy for ejecting droplets through each nozzle. The nozzle substrate is cleaned by a cleaning liquid containing microbubbles before being bonded to another member.

Abstract: A pagewidth inkjet printhead assembly has a plurality of nozzle arrangements. Each nozzle arrangement comprises walls defining an ink chamber having an ink supply channel and an ink ejection port having an ink spreading prevention rim; a thermal actuator mechanism for ejecting ink from the chamber via the ejection port, the thermal actuator mechanism including an actuator arm having two layers which are formed from a conductive, resiliently flexible material, said layers surrounding a central material layer so that said two layers are in thermal balance with the arm in a quiescent state; and drive circuitry for supplying the thermal actuator mechanism with a drive current, the drive circuitry being operable in a first and second operative mode. Tn the first operative mode, the drive circuitry supplies current to the thermal actuator mechanism sufficient to cause the thermal actuator mechanism to bend to a degree whereby ink is expelled from the ink ejection port.

Abstract: A printhead assembly includes a support beam formed of two types of material having different coefficients of thermal expansion, the two materials being repeatedly alternated in segments over the length of the support beam to form the support beam; and a plurality of spaced apart printhead modules supported by the support beam. A first one of the materials has a coefficient of thermal expansion greater than that of silicon, and a second one of the materials has a coefficient of thermal expansion less than that of silicon.

Abstract: An inkjet drop ejection apparatus includes a chamber defined by a plunger spaced from an ejection nozzle; and an actuator for moving the plunger towards the nozzle, the actuator including a magnetic plate and a solenoid coil provided circumferentially between the magnetic plate and the plunger, the solenoid coil for inducing a magnetic field in at least one of the magnetic plate and the plunger. The plunger has defined therethrough a series of apertures arranged around a circumference of the plunger, the apertures substantially mapping a locus of the solenoid coil.

Abstract: An inkjet printhead includes a supporting wafer substrate; an array of drop ejection apparatuses formed in a first side of the supporting wafer substrate, the array of drop ejection apparatuses configured as pairs of rows of drop ejection apparatuses, each drop ejection apparatus including a chamber with a nozzle, and an actuator extending into the nozzle; and a common ink channel extending between each pair of rows of drop ejection apparatuses. Each chamber has a sidewall adjacent to the common ink channel, the side wall provided with a grill portion for facilitating an in-flow of ink from the common ink channel into the chamber, the grill portion adapted to further filter the ink flowing therethrough.

Abstract: A printhead integrated circuit includes a silicon substrate; a CMOS layer having drive and control circuitry; a passivation layer covering the CMOS layer; and nozzle assemblies disposed on the passivation layer. Each nozzle assembly includes a nozzle chamber having a nozzle opening and a droplet ejection actuator associated with each of the chambers. The droplet ejection actuator is electrically connected to the drive circuitry and adapted to eject a droplet of the ejectable liquid from the nozzle opening. Each chamber comprises a roof and sidewalls extending from the passivation layer to the roof. The roof and sidewalls are both comprised of a glass material.

Abstract: An inkjet printhead is disclosed. The printhead includes a substrate, nozzle chambers formed on the substrate, and at least one heater element suspended in each nozzle chamber.

Abstract: An ejection nozzle assembly is provided having a substrate defining a fluid supply passage, drive circuitry on the substrate, a chamber on the drive circuitry and in fluid communication with the fluid supply passage and an ejection port, an ejection member disposed between the fluid supply passage and the ejection port, and a heater element electrically coupled to the drive circuitry and the ejection member for causing ejection of fluid from the ejection port.

Abstract: A printer is provided having a slot for removably receiving a printhead having a plurality of fluid ejection nozzles, and protrusions arranged in the slot to cooperate with a flat surface of a plurality of corners of the printhead upon mounting of the printhead to the printer, the cooperation providing information on the location of the nozzles.

Abstract: An inkjet printhead that has a pair of electrodes, a heater having contacts abutting the pair of electrodes, a heater element for generating a vapor bubble in a quantity of ink and sloped side portions extending between the heater element and the contacts and, a nozzle spaced from the heater such that ink is ejected through the nozzle in response to the generation of a vapor bubble. The heater element has higher electrical resistance than the contacts and the sloped side portions.

Abstract: A liquid jet head includes a plurality of individual flow paths where nozzles configured to jet liquid are in communication; wherein a layer of an adhesive is formed on a side wall surface of the individual flow path; and the layer of the adhesive contains a material capable of having a photocalytic reaction obtaining hydrophilicity by light irradiation.

Abstract: An inkjet head chip has an actuator plate, discharge channels formed in the actuator plate for discharging ink, and non-discharge channels arranged alternately in parallel with the discharge channels and which are not configured to discharge ink. The actuator plate has a piezoelectric layer and a low-permittivity substrate layer. The piezoelectric layer is formed of a piezoelectric material and the low-permittivity substrate layer is formed of an insulating low-permittivity material having a lower permittivity than that of the piezoelectric material. One end of each discharge channel extends to an end surface of the actuator plate in a state in which the insulating low-permittivity material is exposed on a bottom surface thereof, and another end of each discharge channel does not extend to the end surface of the actuator plate.

Abstract: A droplet discharging head includes a substrate, a cavity section positioned on a first surface side of the substrate, a piezoelectric thin film positioned on a second surface side of the substrate and disposed in an area opposing the cavity section, a cover section positioned on the first surface side of the substrate, and disposed covering the cavity section, the cover section having a through-hole, and a groove positioned on the second surface side of the substrate and disposed in a direction extending along an edge of the piezoelectric thin film.

Abstract: An actuator device includes a piezoelectric element including a lower electrode, a piezoelectric layer, and an upper electrode that are displaceably provided in sequence on a substrate. The lower electrode includes a flat center portion and an inclined end portion that descends toward the substrate. The piezoelectric layer is disposed above the lower electrode and the substrate, and includes a first, second, and third piezoelectric layer portion constituted by a plurality of columnar crystals. The columnar crystals of the first and second piezoelectric layer portions are orthogonal to the flat portion of the lower electrode and surface of the substrate, while the columnar crystals of the third piezoelectric layer portion extend orthogonally from a surface of the inclined portion and bend to be orthogonal to the surface of the upper electrode, giving the grains of the columnar crystals of the third piezoelectric layer portion larger widths and increased stress resistance.

Abstract: An ink refill cartridge is provided for refilling an ink ejection printhead cartridge. The refill cartridge includes a receptacle configured to receive a collapsible ink container storing ink. The receptacle is further configured to engage with an ink refill port of the printhead cartridge. A handle assembly can be slidably mounted relative to the receptacle so that, when the handle assembly and receptacle are compressed between the printhead cartridge and a hand, the handle assembly can slide along the receptacle and collapse the ink container to cause the stored ink to be supplied through the ink refill port. In one embodiment, the receptacle defines one or more protrusions configured to engage with complementary recesses of the handle assembly so that the handle assembly will not slide along the receptacle until a threshold compression force has been applied by the hand.

Abstract: A method of controlling a liquid droplet ejection apparatus includes: a pressure detecting step of detecting whether the pressure inside a functional liquid tank is below a lower-limit pressure of a working pressure or not; a step of confirming, when the pressure inside the functional liquid tank is below the lower-limit pressure, whether a functional liquid droplet ejection head is in imaging operation or not; and a pressurization control step of, upon confirmation that the functional liquid droplet ejection head is not in imaging operation, pressurizing the functional liquid tank to an upper-limit pressure of the working pressure.

Abstract: An ink-jet device (20) is provided. The ink-jet device includes an ink reservoir (22), a print head (24), and a carry-in pipe (26) connected between the ink reservoir and the print head. The ink-jet device further includes an air outlet pipe (28) and a balance pipe (30). The air outlet pipe is connected with the print head and intercommunicates with the atmosphere. The balance pipe is connected between the carry-in pipe and the air outlet pipe. A method for eliminating air bubbles in print head is also provided.

Abstract: A liquid ejection apparatus including a recording head capable of ejecting liquid, a first liquid storage unit which is replaceable which stores liquid to be ejected from the recording head, a second liquid storage unit which is integrally formed with the apparatus body which stores liquid to be ejected from the recording head, the liquid stored in the second liquid storage unit being the same kind of liquid as the liquid stored in the first liquid storage unit, and a selection-and-supply unit which selects at least one liquid from the liquid stored in the first liquid storage unit and the liquid stored in the second liquid storage unit and supplies the selected the liquid to the recording head.

Abstract: A printing device includes a supply of colorant and a mechanism. The mechanism is receptive to removable insertion of a first print cartridge and a second print cartridge. One of the first print cartridge and the second print cartridge can be inserted into the mechanism at any given time. The first print cartridge at least ultimately uses the supply of colorant of the printing device to form the images on the media. The second print cartridge has a self-contained supply of colorant that is exclusively used in lieu of the supply of colorant of the printing device to form the images on the media.

Abstract: The invention provides a liquid container for supplying liquid to a liquid consumption apparatus, and includes: a container body that is detachably attached to a container attachment unit of the liquid consumption apparatus; first and second positioning portions that prevent the movement of the container body when corresponding first and second positioning members provided on the container attachment unit fit therein, respectively; a liquid feed outlet to communicate with a liquid supply unit on the container attachment unit to supply liquid from the liquid container to the liquid consumption apparatus; an information memory unit; electric contacts that cause the information memory unit provided on the container body to be connected to an information control circuit of the liquid consumption apparatus; and an engaging portion preventing the detachment of the container body from the container attachment unit when an engaging member engages therewith.

Abstract: An ink container usable for recording heads different in flow rate without being affected by a pigment particle concentration of ink held in an ink supply portion is provided. In correspondence with a size of a filter of a recording head used, ink non-conducting areas are provided to a press-contact member, whereby movement of settled ink remaining in the press-contact member is blocked. As a result, common use of the ink container with respect to the recording heads different in flow rate is realized.

Abstract: An ink cartridge configured to hold an ink includes a substantially hollow body including an inner space and a substantially continuous inner wall. An optical prism in the inner space is disposed at a predetermined distance from the continuous inner wall such that an ink pocket is defined by a prism wall and the continuous inner wall. The prism includes at least one reflection site formed at an angle configured to reflect light from a light source through the prism at a predetermined height relative to a bottom of the body. If ink is present in the ink pocket at a level below at least a portion of the reflection site, the ink does not block the light reflected off of the portion of the reflection site from traveling across the ink pocket at the predetermined height, such that the reflected light is externally detectable by electronic means.

Abstract: An ink refill cartridge is provided for refilling an inkjet printer ink supply. The refill cartridge includes an outer molding defining a cavity. An inner molding is movably mounted to slide into the cavity and defines a recess. A deformable ink membrane is located within the recess, is configured to store ink and defines an outlet through which the stored ink can pass to the ink supply. A biasing arrangement is located within the cavity between the outer molding and the ink membrane. The biasing arrangement biases the membrane to deform and cause ink to pass from the outlet when the inner molding slides into the cavity.

Abstract: The object of the present invention is to provide a recording ink having excellent color developing properties and high delivery stability, by which not only the color saturation of the obtained image can be remarkably improved, but also the image having a high quality can be formed. For this object, the present invention provides a recording ink used for an inkjet recording using a dye ink and a pigment ink properly alternately through one inkjet head, wherein the dye ink and the pigment ink have respectively a viscosity at 25° C. of 5 mPa·s or more and the difference between the viscosity of the dye ink and the viscosity of the pigment ink is 3 mPa·s or less.

Abstract: A solvent based ink formulation for inkjet printing, particularly on plastics and non-porous surfaces, including 1-40% by weight of a ketone solvent, 10-90% by weight of a mixture of cosolvents, 0.1-10% by weight of a (co)polymer binder, 0.1-10% by weight of dispersants/wetting agents, and 0.1-10% of plasticizers to give a formulation having flash point higher than 60.degree. C.

Abstract: An ink-jet recording device which is equipped with a recording head to eject one type or plural types of inks containing a photo-curable component onto a recording medium and a light irradiation device to cure the ink by irradiating light onto the ink having deposited on the recording medium, wherein ink quantity cured by one time light irradiation is not less than 5 g/m2, and an amount of a photo-polymerization initiator in the ink is not more than 5 weight % based on the total weight of the ink.

Abstract: A light emitting device includes a substrate, a light emitting body, a thermally conductive member, and a heat radiation member. The substrate has a first face and a second face which is a face opposite to the first face. The light emitting body is held on a side of the first face of the substrate and emits light. The thermally conductive member is provided so as to be in contact with the second face of the substrate and contains a high thermal conductive material. The heat radiation member is provided so as to be in contact with the thermally conductive member and radiates heat conducted from the substrate through the thermally conductive member.

Abstract: A disclosed image forming apparatus includes a recording head configured to eject liquid droplets onto a sheet to form an image; a transport unit configured to intermittently transport the sheet; a discharge transport unit disposed downstream the transport unit in a transport direction, the discharge transport unit including plural transport rollers configured to transport the sheet in a sheet discharge direction and plural spurs disposed facing the respective transport rollers and arranged in the transport direction; a guide member configured to hold the spurs and be rotatable about a most downstream side or a most upstream side in the transport direction to rotate in a direction away from a sheet transport path; and a stopping and holding unit configured to stop and hold the guide member in a position in which only the spur in the most downstream side in the transport direction is in contact with the sheet.

Abstract: Curved lenses configured to decode three dimensional content and method of fabricating the same. The lenses comprise a polyvinylalcohol polarizer film laminated with triacetate on both sides, wherein the polarizer film has a polarizing efficiency equal to or exceeding 99% and a transmittance percentage equal to or exceeding 35% and a retarder film (e.g., norbornene copolymer resin) laminated on a front surface of the polyvinylalcohol polarizer film laminated with triacetate and aligned to produce a desired circular polarization responsive to specified retardation wavelengths.

Abstract: The present invention provides an ophthalmic lens comprised of two lens materials with a gap between them of less than about 5 mm. The gap is formed and maintained by particles on the perimeter of the surfaces of both lens materials. Methods are also provided for creating a gap between two lens materials and for producing an ophthalmic lens with a gap between two lens materials.

Abstract: A method of capturing a substantially front-view image of the face of a wearer wearing at least one frame (10), the image being captured by an image-capture appliance (1), and calculating the geometrico-physiognomic parameter (H, TETA) by processing the captured image. The calculation of the geometrico-physiognomic parameter (H, TETA) includes identifying in the image the image of a predetermined remarkable point (RC) that is directly or indirectly associated with the wearer's face or with the frame, and it takes into consideration a magnitude representative of the absolute vertical angle of observation (GAMMA) formed between firstly an observation line (DO) connecting the pupil (7) of the image-capture appliance (1) to the remarkable point (RC), and secondly its projection onto a horizontal plane (PF).

Abstract: The invention relates to a device, for measuring the contrast of fringes in a Michelson interferometer at full field, comprising a Wollaston prism for diverting two perpendicular incident polarizations into two different emergent directions, said diverting means being arranged within the interferometer as substitute for a single polarizer. The device is of application to a Michelson interferometer used in an OCT tomographical system and comprising means for obtaining interferometric contrast without use of a modulation technique or synchronous detection methods.

Abstract: The invention relates to a method and to a circuit arrangement for recognising and for tracking, in a contact-free manner, eye positions of several users in real time. The input data comprises a sequence of digital video frames. Said method comprises the following steps: combining a face-finder-instance which is used to examine faces, an eye-finder-instance which is used to examine eye areas, and an eye-tracker-instance which is used to recognise and track eye reference points. The aim of the invention is to convert the eye positions within a hierarchical outlet of the instance to the target, which successively restricts the dataset, which is to be processed, emerging from the dataset of the entire video frame (VF) in order to form a face target area (GZ) and subsequently an eye target area (AZ). Also, an instance or a group of instances, which run in a parallel manner, are carried out, respectively, on a calculating unit thereof.

Abstract: Devices and methods for testing a subject's visual ability are provided. More specifically, the device may include a perspective vision tunnel comprised of plurality of low reflectance walls with one or more mirrors arranged within the perspective vision tunnel. Visual indicia for administering the test of a subject's visual ability are displayed into a first portion of the perspective vision tunnel. The one or more mirrors are arranged to reflect the visual indicia out of the first portion such that visual indicia may be visually perceived by the subject. In accordance with the invention, a subject may be tested utilizing the perspective vision tunnel and input may be received from the individual. The received input may then, for example, be used to compute data related to the user's visual ability.

Abstract: A system employed in a projector for protecting eyes when the projector is in use, includes an initialization module, a light emitting-receiving device, a time-measuring module, a comparison module, and an image-outputting device. The initialization module is configured for initializing a standard time value. The light emitting-receiving device is configured for emitting a light and receiving a reflection of the light. The time-measuring module is configured for measuring time elapsed between emitting the light and receiving the reflection to generate a time-cost value. The comparison module is configured for comparing the standard time value with the time-cost value to generate a signal. The image-outputting device is configured for outputting an eye-protective image or a general image corresponding to the signal.

Abstract: Systems and methods for displaying images to viewers in motion are provided. According to some embodiments, an image display system generally comprises an image source and a lensboard. The image source can be configured to present one or more images outwardly from the image source. The lensboard can comprise at least one curved lens. The curved lens can have a generally curved cross section and a focal distance. The curved lens may also be a cylinder. The lensboard can be spaced apart from the image source at a distance less than the focal distance. A method to display images that appear animated to a viewer in motion relative to the can generally comprise providing an image source configured to direct one or more images outwardly from said image source, and providing a lensboard having a focal distance spaced apart from the image source at a distance less than the focal distance. Other aspects, features, and embodiments are also claimed and described.

Abstract: A rear projector for performing image projection includes: a screen and a projection optical system. The screen has a rotationally symmetric Fresnel lens. The projection optical system has at least one reflection surface formed of a rotationally asymmetric free curved surface. The projection optical system is nonaxisymmetric and makes a central principle ray incident obliquely on the screen in the image projection. The Fresnel lens has aberration that cancels out pupil aberration of the projection optical system so that principal rays of beams exiting from the Fresnel lens become substantially parallel to each other.

Abstract: Disclosed herein is a projector that can be loaded with lamps of a plurality of kinds, each of a plurality of the lamps loadable into the projector being given a lamp serial code formed by arranging lamp information including at least a minimum wattage and a maximum wattage of the lamp and a check sum in predetermined order. The projector includes: a lamp power supply for driving the lamp loaded in the projector, the lamp power supply being provided in advance with a plurality of mode ranges each as a range from a minimum wattage to a maximum wattage of output of the lamp power supply, and one predetermined mode range of the plurality of mode ranges being freely set in the lamp power supply; and a control circuit for controlling the lamp power supply.

Abstract: An illuminating optical system propagates a coherent light flux from at least one light source into a predetermined optical path to guide the light flux to a screen. A light bulb forms an image to be displayed on the screen on an illumination area illuminated with the light flux that is guided by the illuminating optical system. A projecting optical unit projects the image that is formed on the illumination area onto the screen in a magnifying manner. The illuminating optical system includes a diffusing unit that diffuses the light flux from the light source near a focusing position of the illuminating optical system.

Abstract: A hologram element that forms a predetermined illumination pattern on an irradiated surface by diffracting incident light is disclosed. The illumination pattern is formed by making light in a first wavelength region diffracted in a first region, and the illumination pattern is formed by making light in a second wavelength region different from the first wavelength region diffracted in a second region on the same plane as the first region.

Abstract: An adjustment module is capable of adjusting a position of a lens of a projector. The adjustment module includes a base, a first tray, a second tray, at least one guide roller, and at least one boundary constrainer. The first tray is slidably disposed on the base along a first axis. The second tray is slidably disposed on the first tray along a second axis substantially perpendicular to the first axis. The lens is fixed on the second tray. The guide roller is rotatably disposed on the second tray. The boundary constrainer is disposed on the base. The guide roller is capable of confining the lens within an image area of the lens by rotatably contacting the boundary constrainer.

Abstract: A projection display device includes: a housing; a fan disposed within the housing, the fan having a vane portion and a fan case accommodating the vane portion so as to be rotatable; and multiple vibration-proofing members having at least one of elasticity and viscosity, the vibration-proofing members being disposed at multiple positions in the circumferential direction of the perimeter face portion of the fan case surrounding the vane portion around the rotational axis of the vane portion, such that the vibration-proofing members are introduced between the housing and the fan case.