摘要:
A media alignment method includes printing a calibration pattern on a media in a print one by a printhead including forming a first corner identification marker at a first corner of a reference edge of the media, a second corner identification marker at a second corner of the reference edge, and a linear identification marker. The method also includes capturing the calibration pattern by an image capturing unit. The method also includes determining a printhead axis based on the linear identification marker, determining a default printhead origin based on the printhead axis and the linear identification marker, and determining a media origin based on the printhead axis, the first corner identification marker, and the second corner identification marker. The method also includes determining an offset compensation parameter by the determination module corresponding to a distance between the default printhead origin and the media origin.
摘要:
A printer includes a control section that is capable of executing a first process for forming an image on a sheet by discharging ink droplets from a liquid ejection head on the basis of image data and a second process for forming, on the sheet, a test pattern for determination of a shift in ink droplet adhesion position by discharging droplets on the basis of test data. The control section executes the second process in a state in which a print gap between the liquid ejection head and a support is longer than the shortest adjustable print gap.
摘要:
An apparatus includes an acquisition unit and a controller. The acquisition unit is configured to, in a case of a recording medium having different thicknesses along a direction crossing a feeding direction in which the recording medium is fed by a feeding unit, acquire correction information that is set on the basis of an orientation of the recording medium in a case where the recording medium is fed by the feeding unit. The controller is configured to move a print start position of a print unit in the direction crossing the feeding direction on the basis of the correction information acquired by the acquisition unit.
摘要:
In a continuous type ink jet printer having a conventional charging electrode for charging ink drops in accordance with a signal to be recorded on a record receiving media, a pair of deflection electrodes is mounted in a rocker which pivots on a holder mounted on the carrier. As the carrier is accelerated from the stop condition to print speed, the acceleration of the carrier effects rotation of the rocker about the pivot and thus automatic tilt of the deflection electrodes backward from the direction of carrier movement thereby tilting or inclining the electric field formed between the electrodes to compensate for carrier movement. In the preferred form, a simple magnetic type latch is applied to retain the rocker in one position for printing in a first direction, and to enable quick release and reversal, under inertial control, when the carrier moves in the opposite direction.
摘要:
Electronic lead determining circuitry operates to advantage with nonlinear relative movement between a paper record medium and an ink drop projector carrier of ink drop printing apparatus. Electronic lead determining circuitry is arranged for calculating the proper lead times for displacing the normal print enabling signals by factors dependent on the actual carrier positions and the lead for projecting ink drops at the desired positions.Ink drop printing apparatus of the type having a carrier bearing an ink drop projector across a record medium at a velocity relative to the record medium which may be varying substantially--either by design or unintentionally--, and bearing print position location detecting elements, and bearing ink drop projection controlling elements is perfected by controlling electronic circuitry for calculating lead time at a given print position for enabling printing at a predetermined designated print position precisely at the predetermined desired location on the paper. Preferably, a velocity-time profile for the apparatus is chosen for low g-force loading of the moving components, and printing is effective over most of the profile in contradistinction to conventional printing over linear portions only of conventional profiles. Phase locked oscillator loop circuitry is used for tracking the carrier position and adjusting phase, while several alternate lead calculating circuits are arranged in cooperation therewith. Print position and carrier travel direction data are updated in real time as the apparatus operates under data processing control.
摘要:
A method and apparatus for reducing the effects of electrostatic charge repulsion and aerodynamic drag on a stream of ink drops in an ink jet printer. This reduction is accomplished by the non-sequential printing of the ink drops as they issue from the nozzle, i.e., drops issuing sequentially from the nozzle are never printed adjacent to one another. This maximizes the inflight distance between successive ink drops, reducing drop interaction. The slight misalignment in the printing which results from the non-sequential printing may be corrected by either displacing the deflection plates a sufficient angle with respect to the print line or by a corrective signal added to the signal input so that the desired slant results with the non-sequential printing.
摘要:
An ink refilling container includes a bottle and a cap. The bottle includes an ink outlet forming portion including an ink outlet and a valve. The valve has valve segments segmented by slits. The cap includes a top portion, which faces the ink outlet when the cap is put on the bottle. A protruding portion extending in the central axis direction is provided at the center of the top portion. An annular-shaped sealing portion is provided on the top portion radially outside the protruding portion. The radius of the protruding portion is less than the length of the slit. In a sealed state wherein the cap is in thread engagement with the bottle and wherein the sealing portion seals the ink outlet, the tip end of the protruding portion is inserted in the inside of the bottle through the slits at the center region of the ink outlet.
摘要:
An image forming apparatus includes image forming units forming images, a movable body moving along a path extending in a direction in which the image forming units are arranged while the images are sequentially formed on the movable body or on a recording material transported by the movable body so as to be superposed with one another, a contact and separation unit moving to a contact position at which the contact and separation unit is in contact with the movable body and to a separation position at which the contact and separation unit is separated from the movable body and changing a load applied to the moving movable body as a position of the contact and separation unit is changed, and a change unit changing the load in a manner opposite to a change in the load upon a change in the position of the contact and separation unit.
摘要:
A method for printing an authentication pattern wherein, using a multi-deflection continuous inkjet printer, the pattern is printed on a substrate and only contains a small number of black pixels per raster. The resolution in the travel direction X of the substrate and in direction Y of the rasters is thereby largely improved compared with printing in dot-matrix mode.
摘要:
Each of unit patterns includes: a first region which is recorded on a recording medium by liquid ejected from ejection openings of both first and second ejection opening arrays of ejection opening arrays; and at least one second region which is recorded on the recording medium by liquid ejected from the ejection openings of one of the first and the second ejection opening arrays, the first region is a region formed based on dot allocation with which an optical characteristic varies in accordance with intervals of dots formed by the impacted liquid in a fourth direction which is orthogonal to a first direction, and the at least one second region is a region formed based on dot allocation with which the optical characteristic varies in accordance with intervals of the dots formed by the impacted liquid in the first direction.