Canon Production Printing Patente

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During flipping sheets (S) may fold upon themselves under the influence of gravity. To prevent a sheet stacker (1;100; 200) is provided with a holding device (20; 120; 220) for releasably holding at least a portion of the sheet at least partially during the flipping of the sheet by a sheet flipping device (2), wherein the holding device is configured for movement of the held portion of the sheet in a first direction (D) perpendicular to the flipping axis.

A user interface system for displaying on a window digital dynamic status information tiles, each digital dynamic status information tile comprising information of a live status of a functional object connected to the dynamic user interface system and at least one user notification of the functional object, having a navigation option to a digital user representation of the functional object, and being configured to be pinned to a digital task bar on the window. The sequence order of the dynamic status information tiles on the digital task bar dynamically depends on a priority criterion for the live status and/or the at least one notification of the dynamic status information tiles.

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The invention provides a method for operating a printing system including a printer and a finisher. The invention further provides a printer controller, a printer, a printing system, a computer program product and a software medium. Time ordinarily spent idle by a printer because of a necessary setup time by the finisher is utilized to make more efficient use of time. The otherwise idle time may be used to start printing a sheet of the next print job sooner, or may be used to print a quality assurance sheet that is desired in any case. Measures can also be taken to prevent maintenance actions that can take a lot of time by rendering the idle time of the printer shorter than a trigger time that triggers the maintenance action.

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A sheet transfer device (60) for transferring a sheet between two sheet processing devices (39, 58, 59) comprising a switch (62) for directing sheets from a first transport path (64) coming from the first sheet processing device onto a two-way transport path (66) or for directing sheets from the two-way transport path onto a second transport path (68) for feeding sheets to the second sheet processing device. A transport pinch (70) is provided along the two way transport path for reversing a sheet on the two-way transport path. When in use, the two-way transport path extends downward in a vertically extending free-hanging chamber (80) wherein the sheet engaged by the transport pinch is allowed to hang freely under the influence of gravity. Thereby, a compact device is formed which is able to adjust the sheet to a suitable orientation for the second processing device. The device further prevents forces from the first processing device to disrupt the sheet's orientation in the second processing device.

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A flatbed with a medium support plate assembly (1) comprising a plurality of through-holes (H1-H4) and defining different suction zones (Z1-Z3) for differently sized print substrates, wherein each through-holes (H2-H4) along the full circumference (C) are configured to have average cross-sectional through-flow area per unit area larger than through-holes (H1) in a central area (A) circumscribed by said circumference.

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A method for calibrating and converting colours of a digital image into printer specific colorant control values is disclosed. This method comprises the steps of calibrating a specific printer of a printer type according to a printer type specific procedure, wherein for each colorant separately a one-dimensional relationship between a printer tone value and a colorant control value is established; profiling the printer type to establish an output profile that defines a relationship between colour values in a profile connecting colour space and the printer tone values; deriving from the input profile and the output profile a one-dimensional relationship between a black channel and the black printer tone value of the printer; determining if an image colour value is to be converted either by using the profiles or by using the one-dimensional relation; converting the image colour value and subsequently using the printer calibration relations to obtain the colorant control values. This procedure enables the use of G7 colours in a printer that is limited in its amount of colorant that can be applied locally.

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A sheet transport system for moving a sheet (24e, 24f) in a transport direction x while adjusting a position of the sheet in a lateral direction z normal to the transport direction x to a target position (zR), the system comprising first and second pinch roller sets (10, 12) spaced apart from one another in the transport direction x, each pinch roller set comprising two pairs (14, 16; 18, 20) of pinch rollers spaced apart from one another in the lateral direction z, each pair forming a nip for pinching and driving the sheet with an individually controllable speed, characterized by comprising a detection system for detecting a position of the sheet in the lateral direction z while the sheet is pinched by the first pinch roller set (10), and a control system configured for carrying out the following actions:- by controlling the speeds of the pinch rollers (14, 16) of the first pinch roller set (10) before the sheet has reached the second pinch roller set (12), rotating the sheet by a first rotation angle for adjusting a given reference point (32) on a leading part of the sheet to its target position (zR); and- when the sheet has left the first pinch roller set (10) and while the reference point travels along a path segment (36) that is symmetric with respect to the second pinch roller set (12), rotating, by controlling the speeds of the pinch rollers of the second pinch roller set, the sheet by a second rotation angle for aligning a leading edge of the sheet in the lateral direction z.

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The present invention relates to a method of controlling an inkjet printing device comprising one or more print heads each print head comprising a plurality of nozzles, a sensor for detecting printing media deformations located such that printing media travels under said sensor before travelling under the one or more print heads, and a scanner located such that printing media travels under said scanner after travelling under the one or more print heads. The method comprises a first step of detecting media deformations using the sensor. Subseqeuntly, if deformations are detected in the printing media, printing is inhibited. If printing has been inhibited, the method of the present invention continues with a step of sensing a pressure wave in the liquid in the plurality of ducts of the plurality of nozzles of one or more of the print heads, while the printing media travels under the one or more print heads resulting in a plurality of sensed pressure waves. The next step of the method of the preent invention comprises inferring from the plurality of sensed pressure waves which nozzles of the plurality of nozzles enter in contact with the deformed printing media while the printing media travels under the one or more print heads. Finally, the parts of the image printed by the nozzles that have been previously determined to have entered in contact with the deformed printing media are scanned after a subsequent printing of the inhibited printing job.

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The present invention relates to an aqueous ink jet coating comprising a cationic polymer and an anionic surfactant. The present invention further relates to a method for preparing such aqueous ink jet coating composition. In addition, the present invention relates to a method for applying an image onto a recording medium, using an aqueous ink jet coating.

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