公开(公告)号：US07221896B2

公开(公告)日：2007-05-22

申请号：US11007757

申请日：2004-12-07

申请人： Hisashi Yoshimura ,  Hirokazu Nakamura ,  Masaki Matsushita ,  Hirokazu Fujita ,  Naozumi Ueno

发明人： Hisashi Yoshimura ,  Hirokazu Nakamura ,  Masaki Matsushita ,  Hirokazu Fujita ,  Naozumi Ueno

IPC分类号： G03G15/20

CPC分类号： G03G15/2028

摘要： A fixing device of the present invention includes a pressure roller and a peeling roller both of which press a heat roller. The pressure roller is disposed upstream to the peeling roller in a transport direction of a recording paper. An outer diameter of the heat roller, an outer diameter of the pressure roller, and an outer diameter of the peeling roller decrease in this order. With this arrangement, it is possible to realize a fixing device which achieves a reduced size and reduced power requirements, while ensuring a fixing property and a peeling property with respect to a recording medium.Further, with an arrangement in which the pressure roller and the peeling roller which press the heat roller are disposed so that, in a cross section orthogonal to central axes of the heat roller, the pressure roller, and the peeling roller, a first orthogonal line being orthogonal to a first line that connects a center of the heat roller and a center of the pressure roller and passing through a nip portion between both of the rollers, comes into contact with a contact area in a predetermined area on a peripheral surface of the peeling roller, a fixing device of the present invention can transport the recording paper without causing a paper jam when plural pieces of recording paper stacked are transported.

摘要翻译： 本发明的定影装置包括压力辊和剥离辊，两者均压入加热辊。 加压辊在记录纸的输送方向上设置在剥离辊的上游。 加热辊的外径，加压辊的外径以及剥离辊的外径依次减小。 通过这种布置，可以实现在确保相对于记录介质的定影性和剥离性的同时实现尺寸减小和功率要求降低的定影装置。 此外，通过设置加压辊和按压加热辊的剥离辊的布置，使得在与加热辊，加压辊和剥离辊的中心轴正交的截面中，第一正交线 与连接加热辊的中心和加压辊的中心并通过两个辊之间的压合部的第一线正交，与第一线接触，在与第二线的外周面上的预定区域中的接触区域 剥离辊，本发明的定影装置可以在传送堆叠的多张记录纸的情况下传送记录纸而不引起卡纸。

公开(公告)号：US20050123330A1

公开(公告)日：2005-06-09

申请号：US11007757

申请日：2004-12-07

申请人： Hisashi Yoshimura ,  Hirokazu Nakamura ,  Masaki Matsushita ,  Hirokazu Fujita ,  Naozumi Ueno

发明人： Hisashi Yoshimura ,  Hirokazu Nakamura ,  Masaki Matsushita ,  Hirokazu Fujita ,  Naozumi Ueno

IPC分类号： G03G15/00 ,  G03G15/20

CPC分类号： G03G15/2028

摘要： A fixing device of the present invention includes a pressure roller and a peeling roller both of which press a heat roller. The pressure roller is disposed upstream to the peeling roller in a transport direction of a recording paper. An outer diameter of the heat roller, an outer diameter of the pressure roller, and an outer diameter of the peeling roller decrease in this order. With this arrangement, it is possible to realize a fixing device which achieves a reduced size and reduced power requirements, while ensuring a fixing property and a peeling property with respect to a recording medium. Further, with an arrangement in which the pressure roller and the peeling roller which press the heat roller are disposed so that, in a cross section orthogonal to central axes of the heat roller, the pressure roller, and the peeling roller, a first orthogonal line being orthogonal to a first line that connects a center of the heat roller and a center of the pressure roller and passing through a nip portion between both of the rollers, comes into contact with a contact area in a predetermined area on a peripheral surface of the peeling roller, a fixing device of the present invention can transport the recording paper without causing a paper jam when plural pieces of recording paper stacked are transported.

摘要翻译： 本发明的定影装置包括压力辊和剥离辊，两者均压入加热辊。 加压辊在记录纸的输送方向上设置在剥离辊的上游。 加热辊的外径，加压辊的外径以及剥离辊的外径依次减小。 通过这种布置，可以实现在确保相对于记录介质的定影性和剥离性的同时实现尺寸减小和功率要求降低的定影装置。 此外，通过设置加压辊和按压加热辊的剥离辊的布置，使得在与加热辊，加压辊和剥离辊的中心轴正交的截面中，第一正交线 与连接加热辊的中心和加压辊的中心并通过两个辊之间的压合部的第一线正交，与第一线接触，在与第二线的外周面上的预定区域中的接触区域 剥离辊，本发明的定影装置可以在传送堆叠的多张记录纸的情况下传送记录纸而不引起卡纸。

公开(公告)号：US07134748B2

公开(公告)日：2006-11-14

申请号：US10732329

申请日：2003-12-09

申请人： Hirokazu Nakamura ,  Hisashi Yoshimura ,  Takashi Goto ,  Naozumi Ueno ,  Masaki Matsushita ,  Hiroshi Ishii

发明人： Hirokazu Nakamura ,  Hisashi Yoshimura ,  Takashi Goto ,  Naozumi Ueno ,  Masaki Matsushita ,  Hiroshi Ishii

IPC分类号： B41J2/175

CPC分类号： B41J2/17509 ,  B41J2/17513 ,  B41J2/17523 ,  B41J2/17556

摘要： The present invention can reduce the amount of ink in an outlet-side space which is sucked together with gas, without making the thickness of an isolating member for separating the inside of the sub-tank into an inlet-side space and the outlet-side space in the horizontal direction extremely thin nor making an inflow channel for allowing the ink in the inlet-side space to flow into the outlet-side space extremely small. The present invention has an isolating member in the form of a plate for separating the inside of a sub-tank coupled to a recording head into an inlet-side space connected to a main-tank and an outlet-side space connected to the recording head, and an inflow channel in the form of a slit for increasing the ink level in the inlet-side space while allowing the ink in the inlet-side space to flow into the outlet-side space from the isolating member.

摘要翻译： 本发明可以减少与气体一起吸出的出口侧空间中的墨量，而不会使用于将副罐内部分离成入口侧空间的隔离部件的厚度和出口侧 在水平方向上的空间非常薄，也不会使入口侧空间中的墨流入到出口侧空间的流入通道非常小。 本发明具有板形隔离构件，用于将连接到记录头的副容器的内部分隔成连接到主罐的入口侧空间和连接到记录头的出口侧空间 以及用于增加入口侧空间中的墨水量的狭缝形式的流入通道，​​同时允许入口侧空间中的墨从隔离构件流入出口侧空间。

公开(公告)号：US20050001874A1

公开(公告)日：2005-01-06

申请号：US10609526

申请日：2003-07-01

申请人： Takashi Gotoh ,  Hisashi Yoshimura ,  Naozumi Ueno ,  Tomomi Tanaka ,  Masaki Matsushita ,  Hirokazu Nakamura

发明人： Takashi Gotoh ,  Hisashi Yoshimura ,  Naozumi Ueno ,  Tomomi Tanaka ,  Masaki Matsushita ,  Hirokazu Nakamura

IPC分类号： B41J2/18 ,  B41J2/165 ,  B41J2/185

CPC分类号： B41J2/16523

摘要： Ink absorption pads are associated with waste ink storage apparatus in ink jet printers. Waste ink is emitted from the tubes. The waste ink is absorbed by the pads.

摘要翻译： 墨水吸收垫与喷墨打印机中的废墨存储装置相关联。 废墨从管中排出。 废墨被垫吸收。

公开(公告)号：US07226152B2

公开(公告)日：2007-06-05

申请号：US10766777

申请日：2004-01-27

申请人： Masaki Matsushita ,  Hirokazu Nakamura ,  Naozumi Ueno ,  Hisashi Yoshimura ,  Takashi Gotoh ,  Hiroshi Ishii

发明人： Masaki Matsushita ,  Hirokazu Nakamura ,  Naozumi Ueno ,  Hisashi Yoshimura ,  Takashi Gotoh ,  Hiroshi Ishii

IPC分类号： B41J2/175

CPC分类号： B41J2/0451 ,  B41J2/04586 ,  B41J2/17566 ,  B41J2/17596 ,  B41J2/195

摘要： An image forming apparatus in which ink depletion detection accuracy will not be deteriorated even if an air bubble is created in an ink supplying path. The image forming apparatus is provided with (a) an ink storage section for storing ink therein, (b) an ink supplying path for supplying, to a print head, the ink stored in the ink storage section, and (c) an electrode for detecting whether the ink is present or absent in the ink supplying path, an amount of the ink supplied into the ink supplying path being 1.0 cc or less per minute.

摘要翻译： 即使在供墨路径中产生气泡，也不会降低油墨耗尽检测精度的图像形成装置。 图像形成装置设置有（a）用于在其中存储墨水的墨水存储部分，（b）用于向打印头提供存储在墨水存储部分中的墨水的墨水供应路径，以及（c） 检测墨水供应路径中是否存在墨水，供应到供墨路径中的墨水量为每分钟1.0cc或更少。

公开(公告)号：US07156509B2

公开(公告)日：2007-01-02

申请号：US10767750

申请日：2004-01-28

申请人： Masaki Matsushita ,  Hirokazu Nakamura ,  Naozumi Ueno ,  Hisashi Yoshimura ,  Takashi Gotoh ,  Akio Matsumoto ,  Hiroshi Ishii

发明人： Masaki Matsushita ,  Hirokazu Nakamura ,  Naozumi Ueno ,  Hisashi Yoshimura ,  Takashi Gotoh ,  Akio Matsumoto ,  Hiroshi Ishii

IPC分类号： B41J2/175

CPC分类号： B41J2/175 ,  B41J2/17513 ,  B41J2/17556 ,  B41J2/17563 ,  B41J2/17566

摘要： An image forming apparatus includes an ink tank; and an ink supplying path for supplying the ink from the ink tank to a print head, wherein the ink supplying path therein includes a filter, which generates negative pressure when the ink is supplied, the negative pressure being smaller than ink absorbing pressure of a nozzle of the print head. Further, the ink tank therein includes, for example, a porous ink absorbing body for retaining ink. The image forming apparatus satisfies: F′

摘要翻译： 图像形成装置包括墨盒; 以及用于将油墨从墨水罐供给到打印头的供墨路径，其中，所述供墨路径包括过滤器，当所述墨水供应时产生负压，所述负压小于喷嘴的吸墨压力 的打印头。 此外，其中的墨水盒包括例如用于保持墨水的多孔墨水吸收体。 图像形成装置满足：<？in-line-formula description =“In-line Formulas”end =“lead”？> F'<1 /（NR）<？in-line-formula description =“In-line Formulas “end =”tail“？>其中F（m）表示过滤器的过滤精度; 在墨盒内容纳墨水吸收体之前，N（单元/ m）表示吸墨体的孔密度; 并且R表示压缩性，该压缩率是当墨水吸收体在油墨吸收体被包含在墨水容器中之前在墨水容器中被压缩状态包含在墨水吸收体中时的墨水吸收体的体积比，条件 当过滤器的开口为圆时，F'= F; F'=√{平方根（其他情况下为2.F）

公开(公告)号：US07014303B2

公开(公告)日：2006-03-21

申请号：US10728865

申请日：2003-12-08

申请人： Masaki Matsushita ,  Hirokazu Nakamura ,  Naozumi Ueno ,  Hisashi Yoshimura ,  Takashi Goto ,  Hiroshi Ishii

发明人： Masaki Matsushita ,  Hirokazu Nakamura ,  Naozumi Ueno ,  Hisashi Yoshimura ,  Takashi Goto ,  Hiroshi Ishii

IPC分类号： B41J2/175 ,  B41J2/19

CPC分类号： B41J2/19

摘要： The invention offers an inkjet printer which does not produce defective prints when bubbles enter ink supply tube. There is provided an air trap in an ink supply tube near an ink delivery port of an ink tank. The air trap is a hollow rectangular parallelepiped with a flow passage length of Lx, a height of Lh as measured from the bottom of an ink flow to a highest part, and a width of W. On its downstream end, the air trap has an outlet having a height of Ly as measured from the bottom of an ink flow. The air trap has a bubble catching space above the outlet. The dimensions are determined so that bubbles float at least up to height Ly while passing through the flow passage of length Lx. When bubbles flow into the air trap, they float and are caught in the space of the air trap before reaching the outlet.

摘要翻译： 本发明提供了一种当气泡进入供墨管时不会产生有缺陷的喷墨打印机。 在墨罐的墨水输送口附近的墨水供给管中设置有空气阱。 空气阱是一个中空的长方体，其流路长度为Lx，从油墨流底部到最高部分测量的高度为Lh，宽度为W.在其下游端，空气阱具有 出口具有从墨水流的底部测量的Ly的高度。 空气阱在出口上方有一个吸气空间。 确定尺寸，使得气泡在通过长度为Lx的流动通道时至少浮起至高度Ly。 当气泡流入空气阱时，它们浮起并在到达出口之前被捕获到空气阱的空间中。

公开(公告)号：US07331662B2

公开(公告)日：2008-02-19

申请号：US11224064

申请日：2005-09-13

申请人： Masaki Matsushita ,  Hirokazu Nakamura ,  Naozumi Ueno ,  Hisashi Yoshimura ,  Takashi Goto ,  Hiroshi Ishii

发明人： Masaki Matsushita ,  Hirokazu Nakamura ,  Naozumi Ueno ,  Hisashi Yoshimura ,  Takashi Goto ,  Hiroshi Ishii

IPC分类号： B41J2/175

CPC分类号： B41J2/17546 ,  B41J2/17513

摘要： An ink cartridge includes an ink containing section including an ink absorbing body made of a porous material for retaining ink. The ink cartridge satisfies 200≦N·R≦320, where N is the cell density, expressed in the number of pores per inch, of the ink absorbing body before the ink absorbing body is contained in the ink containing section; and R is a compressibility, which is a volume ratio of the ink absorbing body when the ink absorbing body is contained in a compressed state in the ink containing section to the ink absorbing body before the ink absorbing body is contained in the ink containing section. With this configuration, it is possible to (1) preventing ink leakage that is caused when the ink cartridge is inserted or detached, (2) realize stable supply of the ink when continuous ejection is performed, and (3) achieve effective utilization of the ink cartridge volume, thereby realizing an ink cartridge and an image forming apparatus which provide design indices for the ink absorbing body in accordance with properties of the ink.

摘要翻译： 墨盒包括墨水容纳部分，其包括由用于保持墨水的多孔材料制成的吸墨体。 墨盒满足200 <= N.R <= 320，其中N是在墨水容纳部分中包含墨水吸收体之前的墨水吸收体的单位密度（以每英寸的孔数表示）; 并且R是压缩性，其是在墨吸收体被包含在墨水容纳部分中之前墨吸收体被包含在墨水容纳部分中的墨水容纳部分中的吸墨体时的吸墨体的体积比。 根据该结构，能够防止墨盒插入或拆卸时发生墨水泄漏，（2）在连续喷射时实现墨的稳定供给，（3）有效利用墨盒 从而实现了根据墨水的特性为油墨吸收体提供设计指标的墨盒和图像形成装置。

公开(公告)号：US20060033788A1

公开(公告)日：2006-02-16

申请号：US11224064

申请日：2005-09-13

申请人： Masaki Matsushita ,  Hirokazu Nakamura ,  Naozumi Ueno ,  Hisashi Yoshimura ,  Takashi Goto ,  Hiroshi Ishii

发明人： Masaki Matsushita ,  Hirokazu Nakamura ,  Naozumi Ueno ,  Hisashi Yoshimura ,  Takashi Goto ,  Hiroshi Ishii

IPC分类号： B41J2/175

CPC分类号： B41J2/17546 ,  B41J2/17513

摘要： An ink cartridge includes an ink containing section including an ink absorbing body made of a porous material for retaining ink. The ink cartridge satisfies 200≦N·R≦320, where N is the cell density, expressed in the number of pores per inch, of the ink absorbing body before the ink absorbing body is contained in the ink containing section; and R is a compressibility, which is a volume ratio of the ink absorbing body when the ink absorbing body is contained in a compressed state in the ink containing section to the ink absorbing body before the ink absorbing body is contained in the ink containing section. With this configuration, it is possible to (1) preventing ink leakage that is caused when the ink cartridge is inserted or detached, (2) realize stable supply of the ink when continuous ejection is performed, and (3) achieve effective utilization of the ink cartridge volume, thereby realizing an ink cartridge and an image forming apparatus which provide design indices for the ink absorbing body in accordance with properties of the ink.

公开(公告)号：US06991326B2

公开(公告)日：2006-01-31

申请号：US10662354

申请日：2003-09-16

申请人： Masaki Matsushita ,  Hirokazu Nakamura ,  Naozumi Ueno ,  Hisashi Yoshimura ,  Takashi Goto ,  Hiroshi Ishii

发明人： Masaki Matsushita ,  Hirokazu Nakamura ,  Naozumi Ueno ,  Hisashi Yoshimura ,  Takashi Goto ,  Hiroshi Ishii

IPC分类号： B41J2/175

CPC分类号： B41J2/17546 ,  B41J2/17513

摘要： An ink cartridge includes an ink containing section including an ink absorbing body made of a porous material for retaining ink. The ink cartridge satisfies 200≦N·R≦320, where N is the cell density, expressed in the number of pores per inch, of the ink absorbing body before the ink absorbing body is contained in the ink containing section; and R is a compressibility, which is a volume ratio of the ink absorbing body when the ink absorbing body is contained in a compressed state in the ink containing section to the ink absorbing body before the ink absorbing body is contained in the ink containing section. With this configuration, it is possible to (1) preventing ink leakage that is caused when the ink cartridge is inserted or detached, (2) realize stable supply of the ink when continuous ejection is performed, and (3) achieve effective utilization of the ink cartridge volume, thereby realizing an ink cartridge and an image forming apparatus which provide design indices for the ink absorbing body in accordance with properties of the ink.

摘要翻译： 墨盒包括墨水容纳部分，其包括由用于保持墨水的多孔材料制成的吸墨体。 墨盒满足200 <= N.R <= 320，其中N是在墨水容纳部分中包含墨水吸收体之前的墨水吸收体的单位密度（以每英寸的孔数表示）; 并且R是压缩性，其是在墨吸收体被包含在墨水容纳部分中之前墨吸收体被包含在墨水容纳部分中的墨水容纳部分中的吸墨体时的吸墨体的体积比。 根据该结构，能够防止墨盒插入或拆卸时发生墨水泄漏，（2）在连续喷射时实现墨的稳定供给，（3）有效利用墨盒 从而实现了根据墨水的特性为油墨吸收体提供设计指标的墨盒和图像形成装置。