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公开(公告)号：DE69606834D1
公开(公告)日：2000-04-06
申请号：DE69606834
申请日：1996-11-28
Applicant: XEROX CORP
Inventor： HAWKINS WILLIAM G , REZANKA IVAN , MARKHAM ROGER G , IMS DALE R , DRAKE DONALD J
Abstract: An ink jet printer (8) is configured in a hybrid architecture wherein a full width printbar (10) is combined with a partial width color scanning assembly (21) to provide the capability of selectively printing in black only or, alternately, of producing color prints by operating the color scan assembly (21) exclusively. The cost of the hybrid system, when compared to a full width color system using four full width printbars, is greatly reduced. Throughput time is reduced by providing the control circuitry (42) for distinguishing between black only and color operation and selectively controlling the printer mode of operation. The hybrid architecture is particularly useful in a LAN system since it provides a mechanism for balancing the relative color versus black page decomposition speed limitations. Also, the hybrid architecture enables a relatively simple implementation of a checkerboarding technique to suppress banding in output prints.
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公开(公告)号：DE3067769D1
公开(公告)日：1984-06-14
申请号：DE3067769
申请日：1980-10-01
Applicant: XEROX CORP
Inventor： REZANKA IVAN
Abstract: An electrostatographic development and cleaning system employing conductive carrier particles. The carrier particles comprise a core having magnetic or magnetically-attractable properties which is coated with a polymer to provide particles having a resistivity of less than about 1010 ohm-cm. The carrier particles also provide efficient removal of residual toner deposits from a photoreceptor surface after a copying operation.
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公开(公告)号：ES2142549T3
公开(公告)日：2000-04-16
申请号：ES96308602
申请日：1996-11-28
Applicant: XEROX CORP
Inventor： HAWKINS WILLIAM G , REZANKA IVAN , MARKHAM ROGER G , IMS DALE R , DRAKE DONALD J
Abstract: An ink jet printer (8) is configured in a hybrid architecture wherein a full width printbar (10) is combined with a partial width color scanning assembly (21) to provide the capability of selectively printing in black only or, alternately, of producing color prints by operating the color scan assembly (21) exclusively. The cost of the hybrid system, when compared to a full width color system using four full width printbars, is greatly reduced. Throughput time is reduced by providing the control circuitry (42) for distinguishing between black only and color operation and selectively controlling the printer mode of operation. The hybrid architecture is particularly useful in a LAN system since it provides a mechanism for balancing the relative color versus black page decomposition speed limitations. Also, the hybrid architecture enables a relatively simple implementation of a checkerboarding technique to suppress banding in output prints.
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公开(公告)号：DE4400094A1
公开(公告)日：1994-07-07
申请号：DE4400094
申请日：1994-01-04
Applicant: XEROX CORP
Inventor： REZANKA IVAN
Abstract: A thermal ink jet printhead has two or more groups of selectively activatable heating elements and associated nozzles with the heating elements and nozzles within each group having the same geometric parameters, but the geometric parameters of the heating elements and nozzles between groups being different, so that the ejection of droplets from the nozzles of different groups have different ink volumes. When continuous tone and grey scale printing is desired various combinations of nozzles from different groups are used to compose a halftone cell, and when high resolution text printing is desired, either the nozzles from one group or the nozzles from both groups in fixed combinations are used to eject ink droplets onto a recording medium.
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公开(公告)号：BR9304692A
公开(公告)日：1994-05-17
申请号：BR9304692
申请日：1993-11-11
Applicant: XEROX CORP
Inventor： REZANKA IVAN , LIN JOHN W , FAGUE GARY T , DUDEK LESLEY P
Abstract: A multi-color ink-jet printer in which a first partial image is created on a recording medium, and then a second partial image is created on the same recording medium after the first partial image is substantially dried. The first partial image comprises an ink which dries at a slower rate than that of the second partial image. In one embodiment, means are provided for heating the recording medium prior to the creation of the second partial image.
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Patent Agency Ranking
公开(公告)号：BR9605902A
公开(公告)日：1998-08-18
申请号：BR9605902
申请日：1996-12-06
Applicant: XEROX CORP
Inventor： DRAKE DONALD J , REZANKA IVAN , HAWKINS WILLIAM G , IMS DALE R , MARKHAM ROGER G
Abstract: An ink jet printer (8) is configured in a hybrid architecture wherein a full width printbar (10) is combined with a partial width color scanning assembly (21) to provide the capability of selectively printing in black only or, alternately, of producing color prints by operating the color scan assembly (21) exclusively. The cost of the hybrid system, when compared to a full width color system using four full width printbars, is greatly reduced. Throughput time is reduced by providing the control circuitry (42) for distinguishing between black only and color operation and selectively controlling the printer mode of operation. The hybrid architecture is particularly useful in a LAN system since it provides a mechanism for balancing the relative color versus black page decomposition speed limitations. Also, the hybrid architecture enables a relatively simple implementation of a checkerboarding technique to suppress banding in output prints.
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公开(公告)号：BR9502579A
公开(公告)日：1996-05-28
申请号：BR9502579
申请日：1995-05-26
Applicant: XEROX CORP
Inventor： REZANKA IVAN , LIN JOHN W , FAGUE GARY R , DUDEK LESLEY P
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公开(公告)号：MX9306481A
公开(公告)日：1994-06-30
申请号：MX9306481
申请日：1993-10-19
Applicant: XEROX CORP
Inventor： IMS DALE R , O'HORO MICHAEL P , KNEEZEL GARY A , TELLIER THOMAS A , REZANKA IVAN , BURKE CATHIE J , DESHPANDE NARAYAN V , HAWKINS WILLIAM G
Abstract: A heater element for a printhead for an ink jet printing system has a pit layer (22) which protects the overglaze passivation layer (20), PSG step region (10), portions of the Ta layer (14) and dielectric isolation layer (12) and junctions or regions susceptible to the cavitational pressures. The inner walls (23) of the pit layer define the effective heater area and dopant lines (9) within the heater resistor (8) define the actual heater area. In an alternative arrangement, the dopant lines define both the actual and effective heater areas, and in yet another arrangement, one inner wall and one dopant line define the effective heater area. When a plurality of the heater elements are incorporated into a printhead having either full pit channel geometry and open pit channel geometry, the operating lifetime of the printhead is extended because the added protection of the pit layer prevents: 1) passivation damage and cavitational damages of the heater elements; and 2) degradation of heater robustness, hot spot formations and heater failures well into the 109 pulse range. The printhead can be incorporated into a drop-on-demand printing system of a carriage type or a full width type.
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公开(公告)号：MX9306662A
公开(公告)日：1994-05-31
申请号：MX9306662
申请日：1993-10-26
Applicant: XEROX CORP
Inventor： DUDEK LESLEY P , REZANKA IVAN , LIN JOHN W , FAGUE GARY R
Abstract: A multi-color ink-jet printer in which a first partial image is created on a recording medium, and then a second partial image is created on the same recording medium after the first partial image is substantially dried. The first partial image comprises an ink which dries at a slower rate than that of the second partial image. In one embodiment, means are provided for heating the recording medium prior to the creation of the second partial image.
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公开(公告)号：CA1169914A
公开(公告)日：1984-06-26
申请号：CA360745
申请日：1980-09-22
Applicant: XEROX CORP
Inventor： REZANKA IVAN
Abstract: An electrostatographic development and cleaning system employing conductive carrier particles. The carrier particles comprise a core having magnetic or magnetically-attractable properties which is coated with a polymer to provide particles having a resistivity of less than about 1010 ohm-cm. The carrier particles also provide efficient removal of residual toner deposits from a photoreceptor surface after a copying operation.
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