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121. 发明申请

WO2022093194A1 TEST PATTERNS 审中-公开
公开(公告)号：WO2022093194A1
公开(公告)日：2022-05-05
申请号：PCT/US2020/057536
申请日：2020-10-27
申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人： LUID PINOL, Nestor , CASTRO SORIANO, Javier , MONTERO COSTA, Guillem
IPC分类号： B41J29/38 , B41J29/393
摘要： In an example, a method comprises controlling a fluidic die to print a test pattern to a print media by moving the fluidic die sequentially in a forward and reverse direction across a width of a print media. The test pattern is printed, according to the example method, by moving the fluidic die in the forward direction and discharging printing fluid toward the print media to print a first pattern portion to the print media, advancing a print media underneath the fluidic die, and moving the fluidic die in the reverse direction and discharging printing fluid toward the print media to print a second pattern portion to the print media. The second pattern portion is shifted by a predetermined amount relative to the first pattern portion each time the fluidic die moves in the reverse direction.

122. 发明申请

WO2022086565A1 MICROFLUIDICS WITH REDUCED DROPLET THICKNESSES 审中-公开
公开(公告)号：WO2022086565A1
公开(公告)日：2022-04-28
申请号：PCT/US2020/057181
申请日：2020-10-23
申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人： CUMBIE, Michael W. , SHKOLNIKOV, Viktor , DENISON, Carson
IPC分类号： C12M1/38 , C12M3/00 , C12Q1/6806 , C12Q1/686 , B81B1/00 , B81B7/02
摘要： An example device includes a substrate and a cover separated from the substrate by a gap that includes a narrowed portion. The gap constrains a thickness of a fluid droplet situated between the substrate and the cover. The device further includes an array of electrodes at the substrate. The array of electrodes moves the fluid droplet within the gap in response to a charge applied to an electrode of the array of electrodes. The device further includes a thermal element positioned with respect to the substrate to change a temperature of the fluid droplet. The thermal element is positioned at the narrowed portion of the gap to reduce the thickness of the fluid droplet while undergoing the change in temperature.

123. 发明申请

WO2022086551A1 DEVICE WITH DYNAMICALLY CONFIGURABLE OPERATION SPACE 审中-公开
公开(公告)号：WO2022086551A1
公开(公告)日：2022-04-28
申请号：PCT/US2020/057021
申请日：2020-10-23
申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人： SHKOLNIKOV, Viktor , CUMBIE, Michael W.
IPC分类号： B81B1/00 , B01L3/00
摘要： An example device includes a first short-term fluid storage memory; a second short-term fluid storage memory; and a dynamically configurable operation space having an array of electrodes for transporting droplets of fluids along dynamically configurable routes and performing an operation on the droplets of fluids received from the first short-term fluid storage memory and second short-term fluid storage memory and outputting the result of the operation to one of the first short-term fluid storage memory or second short-term fluid storage memory, and for performing a subsequent operation on droplets of fluids from the one of the first short-term fluid storage memory or second short-term fluid storage memory and the other short-term fluid storage memory and outputting the result of the subsequent operation to the other short-term fluid storage memory.

124. 发明申请

WO2022055485A1 MEDIA HANDLING FOR A DYE SUBLIMATION PRINTER 审中-公开
公开(公告)号：WO2022055485A1
公开(公告)日：2022-03-17
申请号：PCT/US2020/050070
申请日：2020-09-10
申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人： CASTELLS DE MONET, Raimon , GUERERRO CARVAJAL, Francisco , MONCLUS VELASCO, Antonio
IPC分类号： B41M5/035 , B41M5/382 , B41M1/26
摘要： An output stage for a printer comprises a media path to transport a substrate, a drying unit along the media path to heat the substrate and to dry a printing fluid on the substrate, a cleaning unit downstream of the drying unit to contact the substrate with an absorbent material, and a collection drum downstream of the cleaning unit and coupled to the media path to wind the substrate onto the collection drum.

125. 发明申请

WO2022031291A1 SHIFT DISTANCES 审中-公开
公开(公告)号：WO2022031291A1
公开(公告)日：2022-02-10
申请号：PCT/US2020/045355
申请日：2020-08-07
申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人： KELLA, Dror
IPC分类号： B41M3/00
摘要： In an example, a method comprises, by processing circuitry, receiving print data representing a sequence of image portions to be printed contiguously on a substrate. A shift distance for the image portions may be determined as a difference between an initial length of the preceding image portion in the sequence and a maximum image portion length. An average shift distance for the sequence of image portions may also be determined. A first image portion associated with a shift distance which is less than the average shift distance may be selected and a first padding length to be added to the initial length of the first image portion may be determined based on the difference between the shift distance for the first image portion and the average shift distance. The first padding length may be subtracted from the shift distance of a second image portion of the sequence of image portions to determine a modified shift distance for the second image portion. A blank portion of image data of length equal to the first padding length may be inserted into the print data of the first image portion.

126. 发明申请

WO2022031278A1 ANALYZING IMAGE DATA 审中-公开
公开(公告)号：WO2022031278A1
公开(公告)日：2022-02-10
申请号：PCT/US2020/044946
申请日：2020-08-05
申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人： MOROVIC, Peter , MOROVIC, Jan
IPC分类号： H04N1/60 , G06T7/90
摘要： A method comprises receiving or determining image data comprising a plurality of image data points. Each image data point has a color value in a first color space. A first process is performed for determining, based on a first color value of a first image data point of the plurality of image data points, a first set of reflectance functions for the first image data point. The reflectance functions represent in a reflectance space reflectance values at a plurality of wavelengths for a surface corresponding to the first image data point. A second process is performed for determining, based on a second color value of a second image data point, a second set of reflectance functions for the second image data point. The results of the first and second processes are compared, and, based on the comparison, a property of the image data is determined.

127. 发明申请

WO2022031277A1 DETERMINING A PARAMER SET 审中-公开
公开(公告)号：WO2022031277A1
公开(公告)日：2022-02-10
申请号：PCT/US2020/044943
申请日：2020-08-05
申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人： MOROVIC, Peter , MOROVIC, Jan
IPC分类号： H04N1/60 , G06T7/90
摘要： A method is described comprising: determining a target color value corresponding to a point in a first color space, and determining a color value criterion defining a target volume in the first color space. The target volume includes the point corresponding to the target color value and color values which match the target color value to a given degree. One or more reflectance criteria to be satisfied by a reflectance function which represents, in a reflectance space, the reflectance of a surface at a plurality of wavelengths are determined. Based on the one or more reflectance criteria and the color value criterion, a boundary, in the reflectance space, is computed. The boundary defines points which satisfy the color value criterion and the one or more reflectance criteria. A set of reflectance functions forming a paramer set for the target color value is thereby obtained.

128. 发明申请

WO2022025873A1 MAINTENANCE OF PRINTING DEVICES 审中-公开
公开(公告)号：WO2022025873A1
公开(公告)日：2022-02-03
申请号：PCT/US2020/043961
申请日：2020-07-29
申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人： BARBER LLORENS, Pere , BANSAL, Neha , COSTIGAN, Grainne , IBANEZ BORAU, Jose Miguel
IPC分类号： B41J29/393
摘要： Determining a need for maintenance of a printing device in large format printing is described in which historical performance data including ink consumption data relating to the printing device may be obtained. Threshold data based on the obtained historical performance data indicative of a need for maintenance of the printing device may be identified. Current performance data of the printing device may be monitored and may be used to determine whether the current performance data exceeds the identified threshold data indicative of a need for maintenance of the printing device.

129. 发明申请

WO2022015288A1 PRINTHEAD MONITORING 审中-公开
公开(公告)号：WO2022015288A1
公开(公告)日：2022-01-20
申请号：PCT/US2020/041909
申请日：2020-07-14
申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人： DAFINOIU, Andrei Alexandru , VINETS ALONSO, Andreu , TOUSSAINT, David
IPC分类号： B41J29/393
摘要： Examples relate to a computer implemented method comprising, based on a vulnerable nozzle map indicating one or more operational nozzles of a printhead identified as meeting a failure likelihood criterion, during a print job, and between successive print passes of the printhead, checking operation of the one or more operational nozzles indicated on the vulnerable nozzle map.

130. 发明申请

WO2022005489A1 PLATEN WITH EDGE SPIT OPENINGS 审中-公开
公开(公告)号：WO2022005489A1
公开(公告)日：2022-01-06
申请号：PCT/US2020/040820
申请日：2020-07-03
申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人： LO, Kevin
IPC分类号： B41J11/04 , B41J11/14 , B41J2/16 , B41J11/06 , B41J2/16508
摘要： Examples of a platen for a printing device are described. In some examples, the platen may include a spit opening located at a side of the platen. In some examples, the spit opening may include an angled lead-in edge to facilitate travel of print media in the printing device. In some examples, an inside portion of a leading edge of the print media contacts the angled lead-in edge of the spit opening and pulls an outside edge of the print media up as the print media moves across the platen.

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