公开(公告)号：EP0824073A2

公开(公告)日：1998-02-18

申请号：EP97203065.4

申请日：1994-04-28

申请人： Hewlett-Packard Company

发明人： Cleveland, Lance ,  Hall, Corrina A.E. ,  Hilliard, William C.

IPC分类号： B41J2/21

CPC分类号： G06K15/107 ,  B41J2/2132 ,  B41J11/42 ,  B41J19/142 ,  G06K15/023 ,  G06K2215/0097

摘要： Images are printed using marks formed in pixel arrays by a scanning print head. For transparent and glossy media, with poor absorbance, drying is enhanced by a multipass (preferably six-pass) print mode in which the total number of ink drops or spot is allocated among correspondingly multiple masks, though some may be duplicates. To further hasten drying, heat is applied --through the medium, from the opposite side as that on which ink is deposited -- but the amount of heat is strictly moderated, particularly for nontransparent glossy media, to accommodate the hypersensitivity of these media to heat-induced warping. Heating for glossy media is preferably restricted to about one-third the power used for drying plain paper. Convective drying too is promoted, by operating a fan over the printed image. Certain special techniques well-suited for plain-paper printing have been found undesirable for use with plastic media; these techniques include so-called "resolution-enhanced technology", bidirectional printing (particularly of black), and optical-density controlled printing speed. At top and bottom of each page or sheet of printing medium, where it is undesirable to operate with the pen partly off the edge of the sheet, and where also the printing medium is constrained from only one direction rather than being held taut beneath the pen, the print mask is rotated while the printing medium is held stationary -- thereby entirely avoiding reliance upon accuracy of print-medium advance.

摘要翻译： 图像使用由扫描打印头中的像素阵列形成的标记印刷。 对于透明和有光泽的介质，具有吸光性差，干燥通过在哪个墨滴或斑点的总数相应的多个掩模中分配一个多通道（最好是六个通）模式打印增强，尽管一些可能重复。 干燥急于进一步，热量被施加--through介质，从相反侧象在其上的油墨被沉积 - 但热量是严格缓和，特别是用于非透明光泽介质，以适应合成媒体的过敏 热诱导的翘曲。 加热光泽介质优选限制为约三分之一用于干燥的普通纸的功率。 对流干燥太被促进，通过在印刷图像操作的风扇。 某些特殊的技术非常适合于普通纸打印已发现不希望的与塑料介质使用; 合成技术包括所谓的“增强的分辨率技术”，双向打印（尤其是黑色），和光密度来控制打印速度。 在其中打印介质只从一个方向约束，而不是每一页或打印介质上，其中，这是不希望使用笔来操作部分离的片材的边缘的片材，因此，顶部和底部被保持绷紧笔下方 从而完全避免在打印介质前进的准确度依赖 - ，而在打印介质固定着的印刷掩模旋转。

公开(公告)号：EP0283111A3

公开(公告)日：1989-10-04

申请号：EP88300395.6

申请日：1988-01-19

申请人： Hewlett-Packard Company

发明人： Cleveland, Lance

IPC分类号： G01D15/28

CPC分类号： G01D15/28

摘要： A wave isolator (18) is provided for large format drafting plotters (10) for preventing waves in the draft­ing medium (16) from traveling up the platen (14) and adversely affecting the pen (20) and its operation and reducing acceleration related vertical scalloping of an­gled lines. Such waves in the medium are generated by the motion of the paper during the plotting operation. The wave isolator comprises at least one strip (22a) of flexible material secured to the platen and of substan­tially the same length. Preferably, a polyimide film is used, having a coating of a thermoset acrylic resin with additives including conductive carbon black and polyethyl­ene. In operation, when the medium is moving upward, the wave isolator deflects under the increased inertial load, and air trapped between the medium and the platen exits at the sides of the medium, dissipating some of its energy. When the medium is moving downward, the wave isolator sees a negative change in load and responds by flexing upward, tending to increase the volume of air between the medium and the platen, creating a low pressure area which sucks air in at the sides of the medium, again dissipating its energy. Use of the wave isolator of the invention permits high speed, high acceleration plotting on both sheet and roll media without the aid of firmware solutions.

公开(公告)号：EP0623474B1

公开(公告)日：1997-04-09

申请号：EP94106780.3

申请日：1994-04-29

申请人： Hewlett-Packard Company

发明人： Rhoads, Wistar W. ,  Cleveland, Lance ,  Movaghar, Abdolreza

IPC分类号： B41J25/308 ,  B41J2/21

CPC分类号： B41J25/3082 ,  B41J2/2103 ,  B41J25/308

公开(公告)号：EP0623474A3

公开(公告)日：1995-03-15

申请号：EP94106780.3

申请日：1994-04-29

申请人： Hewlett-Packard Company

发明人： Rhoads, Wistar W. ,  Cleveland, Lance ,  Movaghar, Abdolreza

IPC分类号： B41J25/308 ,  B41J2/21

CPC分类号： B41J25/3082 ,  B41J2/2103 ,  B41J25/308

摘要： Color inkjet printers (10) commonly employ a plurality of print cartridges (22), usually either two or four, mounted in the printer carriage (20) to produce a full spectrum of colors. In order to optimize print quality, it is desirable to minimize the distance between a thermal inkjet printhead (26) and the media (90) that is being printed on. In a multiple printhead printer (10) only one printhead (26) can be the closest one to the media (90) due to the various mechanical tolerances of the printer (10). Since black text print quality is more sensitive to printhead-to-media distance than is color graphics quality, the overall print quality of both black text and color graphics is optimized by assuring that the black print cartridge (22) is closest to the media (90). Disclosed is a method for determining the relevant tolerances affecting printhead-to-media distance, analyzing the tolerance values to determine the range of tolerances and the greatest variation between one print cartridge and another, such that a determined percentage of the sampled print cartridges fall within this variation. This value is then used to offset the black print cartridge (22) carriage slot (24) so that the black print cartridge will be closest to the media (90).

摘要翻译： 彩色喷墨打印机（10）通常使用安装在打印机托架（20）中的多个通常为两个或四个的打印盒（22），以产生全色的颜色。 为了优化打印质量，期望使热喷墨打印头（26）和正在打印的介质（90）之间的距离最小化。 在多打印头打印机（10）中，由于打印机（10）的各种机械公差，仅一个打印头（26）可以是与介质（90）最接近的一个。 由于黑色文本打印质量比彩色图形质量对打印头到媒体的距离更敏感，通过确保黑色打印墨盒（22）最接近媒体来优化黑色文本和彩色图形的整体打印质量（ 90）。 公开了一种用于确定影响打印头到介质距离的相关公差的方法，分析公差值以确定公差的范围和一个打印盒与另一打印盒之间的最大变化，使得所确定的采样打印盒的百分比落在 这个变化。 然后该值用于抵消黑色打印墨盒（22）托架槽（24），使得黑色打印墨盒最接近介质（90）。

公开(公告)号：EP0622212A3

公开(公告)日：1995-03-15

申请号：EP94303068.4

申请日：1994-04-28

申请人： Hewlett-Packard Company

发明人： Cleveland, Lance

IPC分类号： B41J2/205

CPC分类号： B41J2/2132 ,  B41J19/142

摘要： Images are printed by marks formed in pixel arrays by a scanning print head. During each scan marks are made in a pattern that approximates at least portions of many parallel, separated lines -- angled steeply (best at about 3:1 slope, or at least much greater than 1:1) to the scanning axis and shallowly to the print-medium advance. Areas are left unprinted between the angled lines during one or more earlier scans for each image segment, and filled in during one or more later scans. Preferably the marks are made with liquid ink, and the medium heated to hasten drying. Heating causes an end-of-page paper-shrink defect that accentuates positional error components parallel to the print-medium advance; but the lines at a shallow angle to that advance tend to minimize those components -- so the heating and steeply angled lines together promote high throughput while hiding the end-of-page defects. In practice the mark-forming includes placing marks only at pixels where marks are desired for a given image: the angled lines are incomplete where marks are not desired. The angled lines are at a steepest angle possible within design architecture of the scanning print head and print-medium-advance mechanism -- or the steepest such angle consistent with a roughly equal number of marks per pen scan (for desired images in which all pixels are to be marked) and avoidance of other types of defects. The most highly preferred pattern uses corner-to-corner diagonals in a cell three pixels wide and eight tall; this pattern is rotated to obtain two variants, all put down in three passes. For transparent and glossy media, drying is enhanced by a multipass (preferably six-pass) print mode in which the three maximum-diagonal variants are repeated to provide double density, with half the advance distance.

公开(公告)号：EP0622951A2

公开(公告)日：1994-11-02

申请号：EP94303067.6

申请日：1994-04-28

申请人： Hewlett-Packard Company

发明人： Askeland, Ronald A. ,  Hunt, Catherine B. ,  Prasad, Keshava A. ,  Hall, Corrina A. E. ,  Hickman, Mark Stephen ,  Cleveland, Lance ,  Allen, William J.

IPC分类号： H04N1/46

CPC分类号： B41J2/2121 ,  G06K15/102 ,  G06K2215/0071 ,  H04N1/40025 ,  H04N1/52

摘要： At least one certain primary or secondary color is established that receives special treatment for at least one printing medium. Such treatment may include (1) using more than two drops of primaries per pixel for binary printing of a particular secondary; or (2) binary-printing the chromatic primary or secondary -- but not other hues -- after rendition, by use of a "superpixel"; or (3) application of, in effect, a nonintegral number, greater than one, of ink drops per pixel; or (4) combinations of these treatments. As an example of the first of these treatments -- using inks optimized for plain paper at one drop of ink for primaries and two (one of each of two primaries) for secondaries -- red is printed on transparency film as one drop of yellow ink and two of magenta in each pixel. As to the second treatment, the superpixel is preferably a group of pixels ( e. g. , a two-by-two array) including the target pixel, in which group each pixel is inked and at least one pixel receives at least two drops of ink. In particular -- still assuming inks optimized for plain paper as described above -- to print red on so-called "glossy media" (meaning nontransparent glossy media), one drop each of yellow and magenta is used in each of two opposite corners, and one drop of yellow and two drops of magenta are used in each of the remaining corners. Analogously, to print green on transparency film, one drop each of yellow and cyan is used in each of two opposite corners, and one drop of yellow and two drops of cyan are used in each of the remaining corners; and to print blue on transparency film one drop each of magenta and cyan is used in two opposite corners, and one of magenta and two of cyan are used in remaining corners.

摘要翻译： 至少一个伯或仲某些颜色被设定没有经过特殊处理用于至少一个打印介质上。 搜索处理可以包括使用每像素初选用于特定次要的二进制打印的两个以上的滴（1）; 或（2）二进制印刷色伯或仲 - 但不是其它色调 - 再现后，通过使用“超级像素”的; 或（3）的，应用实际上，一个非整数量大于一，每像素的墨滴; 或（4）的合成处理的组合。 随着第一-的合成处理的一个例子 - 使用油墨在用于原色为次级一滴墨水和两个（每两个基色中的一个），用于普通纸优化 - 红色被印刷在透明膜，为黄色一滴墨水 和两个在每个像素中的品红色。 至于第二个处理，超像素，优选为一组像素（例如G.，A二乘二阵列）包括所述目标像素，其中组中的每个像素被着墨和至少一个像素接收油墨的至少两滴。 特别 - 无声假设如上所述油墨的普通纸优化 - 打印红色的所谓“光泽介质”（意为不透明的光泽介质），一个液滴每个的黄色和品红色，在每个的两个相对的角部中使用， 和黄色一滴和品红两滴在每个剩余的角部使用。 类似地，打印绿色透明度电影，一个降每个黄色和青色中的每个的两个相对角，和黄色一滴和青色的两滴在每个剩余的角部被用于使用; 和打印蓝色透明薄膜酮下降每个品红色和青色的是在两个相对的角部中使用，和品红色中的一个和两个青色的其余角被使用。

公开(公告)号：EP1102476A2

公开(公告)日：2001-05-23

申请号：EP01200414.9

申请日：1994-04-28

申请人： Hewlett-Packard Company, A Delaware Corporation

发明人： Askeland, Ronald A. ,  Hunt, Catherine B. ,  Prasad, Keshava A. ,  Hall, Corrina A.E. ,  Hickman, Mark Stephen ,  Cleveland, Lance ,  Allen, William J.

IPC分类号： H04N1/46 ,  H04N1/54

CPC分类号： B41J2/2121 ,  G06K15/102 ,  G06K2215/0071 ,  H04N1/40025 ,  H04N1/52

摘要： At least one certain primary or secondary color is established that receives special treatment for at least one printing medium. Such treatment may include (1) using more than two drops of primaries per pixel for binary printing of a particular secondary; or (2) binary-printing the chromatic primary or secondary -- but not other hues -- after rendition, by use of a "superpixel"; or (3) application of, in effect, a nonintegral number, greater than one, of ink drops per pixel; or (4) combinations of these treatments. As an example of the first of these treatments -- using inks optimized for plain paper at one drop of ink for primaries and two (one of each of two primaries) for secondaries -- red is printed on transparency film as one drop of yellow ink and two of magenta in each pixel. As to the second treatment, the superpixel is preferably a group of pixels ( e. g. , a two-by-two array) including the target pixel, in which group each pixel is inked and at least one pixel receives at least two drops of ink. In particular -- still assuming inks optimized for plain paper as described above -- to print red on so-called "glossy media" (meaning nontransparent glossy media), one drop each of yellow and magenta is used in each of two opposite corners, and one drop of yellow and two drops of magenta are used in each of the remaining corners. Analogously, to print green on transparency film, one drop each of yellow and cyan is used in each of two opposite corners, and one drop of yellow and two drops of cyan are used in each of the remaining corners; and to print blue on transparency film one drop each of magenta and cyan is used in two opposite corners, and one of magenta and two of cyan are used in remaining corners.

摘要翻译： 至少一个伯或仲某些颜色被设定没有经过特殊处理用于至少一个打印介质上。 搜索处理可以包括使用每像素初选用于特定次要的二进制打印的两个以上的滴（1）; 或（2）二进制印刷色伯或仲 - 但不是其它色调 - 再现后，通过使用“超级像素”的; 或（3）的，应用实际上，一个非整数量大于一，每像素的墨滴; 或（4）的合成处理的组合。 随着第一-的合成处理的一个例子 - 使用油墨在用于原色为次级一滴墨水和两个（每两个基色中的一个），用于普通纸优化 - 红色被印刷在透明膜，为黄色一滴墨水 和两个在每个像素中的品红色。 至于第二个处理，超像素，优选为一组像素（例如G.，A二乘二阵列）包括所述目标像素，其中组中的每个像素被着墨和至少一个像素接收油墨的至少两滴。 特别 - 无声假设如上所述油墨的普通纸优化 - 打印红色的所谓“光泽介质”（意为不透明的光泽介质），一个液滴每个的黄色和品红色，在每个的两个相对的角部中使用， 和黄色一滴和品红两滴在每个剩余的角部使用。 类似地，打印绿色透明度电影，一个降每个黄色和青色中的每个的两个相对角，和黄色一滴和青色的两滴在每个剩余的角部被用于使用; 和打印蓝色透明薄膜酮下降每个品红色和青色的是在两个相对的角部中使用，和品红色中的一个和两个青色的其余角被使用。

公开(公告)号：EP0824073A3

公开(公告)日：1998-03-18

申请号：EP97203065.4

申请日：1994-04-28

申请人： Hewlett-Packard Company

发明人： Cleveland, Lance ,  Hall, Corrina A.E. ,  Hilliard, William C.

IPC分类号： B41J2/21

CPC分类号： G06K15/107 ,  B41J2/2132 ,  B41J11/42 ,  B41J19/142 ,  G06K15/023 ,  G06K2215/0097

摘要： Images are printed using marks formed in pixel arrays by a scanning print head. For transparent and glossy media, with poor absorbance, drying is enhanced by a multipass (preferably six-pass) print mode in which the total number of ink drops or spot is allocated among correspondingly multiple masks, though some may be duplicates. To further hasten drying, heat is applied --through the medium, from the opposite side as that on which ink is deposited -- but the amount of heat is strictly moderated, particularly for nontransparent glossy media, to accommodate the hypersensitivity of these media to heat-induced warping. Heating for glossy media is preferably restricted to about one-third the power used for drying plain paper. Convective drying too is promoted, by operating a fan over the printed image. Certain special techniques well-suited for plain-paper printing have been found undesirable for use with plastic media; these techniques include so-called "resolution-enhanced technology", bidirectional printing (particularly of black), and optical-density controlled printing speed. At top and bottom of each page or sheet of printing medium, where it is undesirable to operate with the pen partly off the edge of the sheet, and where also the printing medium is constrained from only one direction rather than being held taut beneath the pen, the print mask is rotated while the printing medium is held stationary -- thereby entirely avoiding reliance upon accuracy of print-medium advance.

摘要翻译： 图像使用由扫描打印头在像素阵列中形成的标记进行打印。 对于吸光度差的透明和光泽介质，通过多通道（优选六遍）打印模式来增强干燥，其中墨滴或斑点的总数分配在相应的多个掩模中，尽管一些可能是重复的。 为了进一步加速干燥，通过介质从与油墨沉积相反的一侧施加热量，但是热量严格控制，特别是对于不透明的光泽介质，以适应这些介质的过敏性 热致翘曲。 用于光泽介质的加热优选限制为用于干燥普通纸的功率的约三分之一。 通过在打印图像上操作风扇，也可以促进对流干燥。 已经发现某些特别适用于普通纸印刷的特殊技术不适合用于塑料介质; 这些技术包括所谓的“分辨率增强技术”，双向打印（特别是黑色）和光密度控制打印速度。 在每张纸或每张打印介质的顶部和底部，不希望用笔的一部分离开纸张的边缘进行操作，并且打印介质仅受到一个方向的约束，而不是紧紧地绷紧在笔的下面 ，印刷掩模在打印介质保持静止的同时旋转 - 从而完全避免依赖于打印介质前进的准确性。

公开(公告)号：EP0638430B1

公开(公告)日：1997-07-23

申请号：EP94117234.8

申请日：1994-04-25

申请人： Hewlett-Packard Company

发明人： Firl, Gerold ,  Cleveland, Lance ,  Zantow, Timothy

IPC分类号： B41J11/58

CPC分类号： B41J11/58 ,  B41J13/103 ,  B65H1/04 ,  B65H31/10 ,  B65H31/22 ,  B65H2801/21

公开(公告)号：EP0622211A2

公开(公告)日：1994-11-02

申请号：EP94303066.8

申请日：1994-04-28

申请人： Hewlett-Packard Company

发明人： Cleveland, Lance ,  Hall, Corrina A. E. ,  Hilliard, William C.

IPC分类号： B41J2/205

CPC分类号： G06K15/107 ,  B41J2/2132 ,  B41J11/42 ,  B41J19/142 ,  G06K15/023 ,  G06K2215/0097

摘要： Images are printed using marks formed in pixel arrays by a scanning print head. Certain special techniques well-suited for plain-paper printing have been found undesirable for use with plastic media; these techniques include so-called "resolution-enhanced technology", bidirectional printing (particularly of black), and optical-density controlled printing speed. At top and bottom of each page or sheet of printing medium, where it is undesirable to operate with the pen partly off the edge of the sheet, and where also the printing medium is constrained from only one direction rather than being held taut beneath the pen, the print mask is rotated while the printing medium is held stationary -- thereby entirely avoiding reliance upon accuracy of print-medium advance.