Abstract:
A fluid ejector for ejecting discrete volumes of ejectant includes a body with opposing first and second surfaces. One or more nozzles are defined as conduits extending through the body between the surfaces to connect first and second orifices at the first and second surfaces respectively. The fluid ejector further includes a gas supply means having a gas outlet and an ejectant supply means. The ejectant supply means supplies the ejectant to the nozzles at a pressure above ambient via their supply orifices. The supply orifice is defined in a conduit's side or is the second orifice. Relative movement of the gas supply means and body exposes first orifices to the gas outlet allowing the gas supply means to supply gas at a pressure above ambient, wherein a pressure difference thereby created between the first and second orifices causes ejection of the ejectant from the nozzles through the second orifices.
Abstract:
An image formation cartridge employed to a printer includes a movable image formation sheet supported between a pair of rotatable shafts, a rotatable ink applying roller unit contacting the image formation sheet and an ink feeding unit for feeding ink from an ink storing container to the ink applying roller unit. The image formation sheet may be wound on one of the pair of rotatable shafts as the shafts rotate in the same direction. Ink may continuously be applied to the image formation sheet through the ink feeding unit and the ink applying roller unit as the shafts rotate.
Abstract:
A film is made of an elastic material. The film is stretched in at least one direction in parallel to a surface of the film. Then, through-holes are punched in the film be means of needles, in a state the film is stretched. After the punching is completed, the stretching is terminated, so that the film recovers its original shape.
Abstract:
An image forming method and an image forming apparatus which are capable of jetting ink having high viscosity stably without incremental energy consumption, at a small quantity, and at high speed, and capable of forming high quality and highly precise images without feathering and bleeding on various recording media at high speed are provided. Color ink is held on a flat surface of an ink carrier in the form of a uniform pattern, and the ink carrier is partially heated correspondingly to image information. Then, an air layer is formed on the interface or near the interface between the ink carrier and the color ink. The color ink is jetted by the pressure generated when the air layer is formed to adhere on a recording medium, and thus an image is formed. Particularly, the color ink held on the ink carrier in the form of isolated ink droplets receives an extremely low and uniform resistance force due to the peripheral color ink, therefore, even though color ink having high viscosity is used, ink droplets are jetted stably with small energy and at high speed for recording.
Abstract:
A recording apparatus having a printing head, comprises a support having heating elements, a film being contacted the support to face the elements and having nozzle holes on a region facing the elements, an ink holder, arranged near the holes and on one of opposing surfaces of the film and the support, for holding externally supplied ink, and a vibrator for vibrating the support to supply ink to the holes from the ink holder through a gap between the opposing surfaces of the film and the support.In another embodiment a drive unit may reciprocally move the nozzle member in the alignment direction. In a further embodiment the drive unit may reciprocally move the film and spacer relative to the support and the ink supplier.
Abstract:
The present invention relates to a cassette-type printing head which comprises in combination: a cassette body for housing an ink, an ink guiding member in which one end portion thereof is immersed in the cassette body, and a film member having a plurality of holes or recesses for housing an ink which is contacted by the ink guiding member which protrudes from the cassette body.
Abstract:
An image forming system includes: a first image forming apparatus that is disposed at an upstream side in a feeding direction of a belt-like continuous recording medium; and a second image forming apparatus that is disposed at a downstream side in the feeding direction of the recording medium, wherein each of the first image forming apparatus and the second image forming apparatus includes: a recording head that forms images on the recording medium by ejecting droplets from ejection outlets of the recording head; a closing member that serves to close the ejection outlets; and a controller that monitors head drive data for driving of the recording head, and closes the ejection outlets with the closing member in case a droplets non-ejection state is beyond a predetermined first allowable condition during printing.
Abstract:
A laser actuated image recording apparatus having an ink retaining layer. Concentrated light is projected towards a flexible film ink retaining layer so as to heat ink contained thereon and cause bubbles to form in the ink. The bubbles burst and propel ink droplets towards a recording member.
Abstract:
In a printer in which a plurality of holes to be filled with ink is formed in an ink film, selectively heating ink generates bubbles from the holes and ejects ink due to the pressure of bubbles, thus printing an image on a sheet. The ink film having the holes satisfies relations H.gtoreq.2P and V.gtoreq.2P +D when the diameter of the holes is given as D, the pitch between two adjacent holes is given as P, the width of a heating element in a direction perpendicular to the moving direction of the sheet is given as H, and the width of the heating element in the moving direction of the sheet is given as V.
Abstract:
In a printer (10) in which a plurality of holes to be filled with ink are formed in an ink film (108), selectively heating ink generates bubbles from the holes and ejects ink due to the pressure of bubbles, thus printing an image on a sheet. The printer includes a conveying mechanism (198) for conveying the ink film (108) to heating elements (104) of a thermal head (106), and a belt (50) for conveying the sheet to a position facing the heating elements of the thermal head (106) through the ink film. The belt (50) is provided with a guide plate (84) for separating end portions of the sheet from the heating elements when the front and rear end portions of the sheet are positioned to face the heating elements.