公开(公告)号：US09016843B2

公开(公告)日：2015-04-28

申请号：US14327061

申请日：2014-07-09

Applicant: Riso Kagaku Corporation

Inventor： Akira Nishiyama ,  Tomoyuki Akiyama ,  Hiroshi Sugitani

IPC: B41J2/18 ,  B41J2/175 ,  B41J2/045

CPC classification number: B41J2/0454 ,  B41J2/175 ,  B41J2/17596 ,  B41J2/18 ,  B41J29/393 ,  B41J2002/17569

Abstract: A determiner determines whether a total ink amount in an ink circulation passage calculated by an ink amount calculator is less than an ink circulation necessary amount being an amount necessary for circulation of ink in the ink circulation passage, when a liquid level detector detects that a liquid level of the ink in an ink tank is lower than a liquid level corresponding to an ink circulation standard amount being a standard for ink circulation. A controller performs ink supply amount control to supply the ink from an ink bottle to the ink tank in such an amount that the total ink amount is kept below the ink circulation standard amount, when the determiner determines that the total ink amount is less than the ink circulation necessary amount.

Abstract translation: 确定器确定由油墨量计算器计算的油墨循环通道中的总墨量是否少于墨水循环必需量，该油墨循环必需量是油墨循环通道中油墨循环所需的量，当液位检测器检测到液体 油墨罐中的油墨水平低于对应于作为油墨循环的标准的油墨循环标准量的液位。 控制器进行供墨量控制，以便当墨水量总量低于墨水循环标准量时，将墨水从墨水瓶供应到墨水盒中，当墨水量总计小于 油墨循环所需量。

公开(公告)号：US09475304B2

公开(公告)日：2016-10-25

申请号：US14817402

申请日：2015-08-04

Applicant: RISO KAGAKU CORPORATION

Inventor： Hiroshi Sugitani ,  Asayo Shimoda

IPC: B41J2/18 ,  B41J2/045 ,  B41J2/175 ,  B41J29/377

CPC classification number: B41J2/18 ,  B41J2/04531 ,  B41J2/0454 ,  B41J2/04563 ,  B41J2/175 ,  B41J2/17556 ,  B41J2/17596 ,  B41J29/377 ,  B41J2202/08 ,  B41J2202/12

Abstract: An inkjet printing device includes a printer, including an inkjet head having a nozzle configured to eject ink, an ink tank configured to store the ink, a circulation path configured to circulate ink between the ink tank and the inkjet head, an ink pump configured to send the ink from the ink tank to the inkjet head in order to circulate ink and an ink temperature detector configured to detect an ink temperature, a pressure regulator configured to apply a negative pressure to the ink tank and to regulate a pressure in the ink tank and a controller configured to control the pressure regulator in accordance with the ink temperature in the printer to regulate the pressure in the ink tank and to regulate a driving rate of the ink pump.

Abstract translation: 一种喷墨打印装置，包括：打印机，包括具有喷射墨水的喷嘴的喷墨头，配置成存储墨水的墨盒;墨水盒和喷墨头之间的墨水循环循环路径;墨水泵， 将墨水从墨水盒传送到喷墨头以便循环墨水和配置成检测墨水温度的墨水温度检测器，配置成向墨水罐施加负压并调节墨水盒中的压力的​​压力调节器 以及控制器，被配置为根据打印机中的墨水温度来控制压力调节器，以调节墨水盒中的压力并调节墨水泵的驱动速度。

公开(公告)号：US09272524B1

公开(公告)日：2016-03-01

申请号：US14851163

申请日：2015-09-11

Applicant: RISO KAGAKU CORPORATION

Inventor： Hiroshi Sugitani ,  Tomoyuki Akiyama ,  Isao Matsushima

IPC: B41J2/175

CPC classification number: B41J2/17596 ,  B41J2/175 ,  B41J2/17556 ,  B41J2/18 ,  B41J29/377

Abstract: A controller regulates pressures of a positive pressure space and a negative pressure space and maintains the pressures at setting pressures when ink is circulated in a circulation path, by: driving an air pump to apply the setting pressures to the positive pressure space and the negative pressure space; and after the setting pressures are applied, controlling opening and closing of a positive-pressure-side pressure regulation valve, opening and closing of a negative-pressure-side pressure regulation valve, and driving of the air pump according to the pressures in the positive pressure space and the negative pressure space, and opening the positive-pressure-side pressure regulation valve or the negative-pressure-side pressure regulation valve simultaneously with the driving of the air pump.

Abstract translation: 控制器调节正压空间和负压空间的压力，并且当油墨在循环路径中循环时将压力保持在设定压力，通过：驱动空气泵将设定压力施加到正压空间和负压 空间; 在施加设定压力之后，控制正压侧调压阀的开闭，负压侧调压阀的开闭，以及根据正压的压力驱动气泵 压力空间和负压空间，并且与空气泵的驱动同时打开正压侧压力调节阀或负压侧压力调节阀。

公开(公告)号：US09061516B2

公开(公告)日：2015-06-23

申请号：US14484550

申请日：2014-09-12

Applicant: RISO KAGAKU CORPORATION

Inventor： Tomoyuki Akiyama ,  Hiroshi Sugitani ,  Akira Nishiyama

IPC: B41J29/38 ,  B41J29/393 ,  B41J2/17 ,  B41J2/175

CPC classification number: B41J2/17596 ,  B41J2/175 ,  B41J2/18

Abstract: A first ink air chamber is in communication with an air layer in a first ink tank for an ink of a first viscosity in communication with a first inkjet head. A second ink air chamber is in communication with an air layer in a second ink tank for an ink of a second viscosity in communication with a second inkjet head. A first on-off valve opens or closes communication between the first and second ink air chambers. A second on-off valve opens or closes communication between the second ink air chamber and the atmosphere. A pressure adjuster is configured to adjust a pressure in the second ink air chamber without intervention of the first ink air chamber. A controller is configured to drive the pressure adjuster to increase the pressure in the second ink air chamber with the first and second on-off valves being closed.

Abstract translation: 第一墨水空气室与用于与第一喷墨头连通的第一粘度的墨的第一墨水罐中的空气层连通。 第二墨水空气室与第二墨水罐中的空气层连通，用于与第二喷墨头连通的第二粘度的墨水。 第一开关阀打开或关闭第一和第二墨水空气室之间的连通。 第二开关阀打开或关闭第二墨水空气室和大气之间的连通。 压力调节器构造成在没有第一墨水空气室的介入的情况下调节第二墨水空气室中的压力。 控制器构造成驱动压力调节器以增加第一和第二开关阀关闭时第二墨水空气室中的压力。

公开(公告)号：US11141991B2

公开(公告)日：2021-10-12

申请号：US16668386

申请日：2019-10-30

Applicant: RISO KAGAKU CORPORATION

Inventor： Hiroki Endo ,  Hiroshi Sugitani ,  Ryosuke Miyachi

IPC: B41J2/185

Abstract: An inkjet printing device includes an inkjet head that ejects ink to paper to be transported, a blocking unit that blocks ink mist on a downstream side of the inkjet head in a transport direction of paper, an ink mist collection mechanism and a belt platen that collect ink mist blocked by the blocking unit.

公开(公告)号：US09327514B2

公开(公告)日：2016-05-03

申请号：US14801069

申请日：2015-07-16

Applicant: RISO KAGAKU CORPORATION

Inventor： Akira Nishiyama ,  Hiroshi Sugitani

IPC: B41J2/175

CPC classification number: B41J2/17596 ,  B41J2/175 ,  B41J2/18

Abstract: A common air chamber is connected to an air layer of a pressurizing tank and to an air layer of a negative-pressure tank. A pressurizing-side communication valve opens/closes an air channel in an air conduit between the pressurizing tank and the common air chamber. A negative-pressure side communication valve opens/closes an air channel in an air conduit between the negative-pressure tank and the common air chamber. A negative-pressure tank atmospheric air opening valve switches the negative-pressure tank between a state shut off from the atmospheric air and a state open thereto. The pressurizing-side communication valve and the negative-pressure tank atmospheric air opening valve are of a normally-open type closed when electrified and open when not. The negative-pressure side communication valve is of a normally-closed type open when electrified and closed when not. While not electrified, a nozzle pressure of an inkjet head becomes a meniscus breakage pressure or less.

Abstract translation: 公共空气室连接到加压罐的空气层和负压罐的空气层。 加压侧连通阀打开/关闭加压槽和公共空气室之间的空气管道中的空气通道。 负压侧连通阀打开/关闭负压罐和公共空气室之间的空气管道中的空气通道。 负压罐大气开放阀将负压罐切换到与大气隔离的状态和向其敞开的状态。 加压侧连通阀和负压罐大气开放阀在通电时为常开型，当不通时打开。 负压侧连通阀在不通电时关闭时为常闭型。 在不带电的情况下，喷墨头的喷嘴压力变为弯液面破裂压力以下。

公开(公告)号：US11141984B2

公开(公告)日：2021-10-12

申请号：US16676863

申请日：2019-11-07

Applicant: RISO KAGAKU CORPORATION

Inventor： Toshiya Saigusa ,  Hiroshi Sugitani ,  Takehiro Yamori

IPC: B41J2/175 ,  B65D43/02 ,  B65D53/00

Abstract: A tank includes a tank main body configured to house liquid and a lid configured to cover an upper side of the tank main body. The tank main body includes an atmosphere communication hole having an opening opened on an upper surface of the tank main body and a lowered step portion dug down from a periphery of the opening. The lid includes a recess formed on a lower surface of the lid and facing the opening.

公开(公告)号：US09567177B2

公开(公告)日：2017-02-14

申请号：US14693554

申请日：2015-04-22

Applicant: RISO KAGAKU CORPORATION

Inventor： Hiroshi Sugitani ,  Akihiro Tsumura ,  Tetsunori Saito

IPC: B65H29/14 ,  B65H31/02 ,  B65H29/52 ,  B65H43/00

CPC classification number: B65H29/14 ,  B65H29/52 ,  B65H31/02 ,  B65H43/00 ,  B65H2301/133 ,  B65H2301/4212 ,  B65H2404/1421 ,  B65H2404/14211 ,  B65H2404/6112 ,  B65H2404/63 ,  B65H2404/64 ,  B65H2511/10 ,  B65H2511/13 ,  B65H2511/214 ,  B65H2511/216 ,  B65H2511/30 ,  B65H2511/413 ,  B65H2601/251 ,  B65H2801/06 ,  B65H2220/01 ,  B65H2220/02 ,  B65H2220/11

Abstract: When a face of a paper sheet to be discharged on which an image is formed faces downward, a paper discharge device divides an image region of image data on the paper sheet to be discharged into areas along a discharge direction, detects an area in which maximum image density for each divided area is higher than or equal to a specified threshold, and controls a discharge angle so that the detected area does not come into contact with a stacked paper sheet until the paper sheet to be discharged has been discharged from a discharge roller.

Abstract translation: 当形成有图像的排出纸张的面朝下时，排纸装置将纸张上的图像数据的图像区域分割成排出方向的区域，检测最大值的区域 每个划分区域的图像浓度高于或等于指定阈值，并且控制排出角度，使得检测区域不与堆叠的纸张接触，直到待排出的纸张已经从排出辊排出 。

公开(公告)号：US09505218B2

公开(公告)日：2016-11-29

申请号：US14813838

申请日：2015-07-30

Applicant: RISO KAGAKU CORPORATION

Inventor： Hideyuki Ujiie ,  Tomoyuki Akiyama ,  Hiroshi Sugitani

IPC: B41J2/165

CPC classification number: B41J2/16535 ,  B41J2/16538 ,  B41J2/16544

Abstract: An inkjet image forming apparatus includes inkjet heads each of which has two or more nozzle rows from which ink of different colors is injected (each of the nozzle rows includes nozzle holes), a wipe unit that includes wipers and carries out a wipe process to wipe away ink remained on a surface on which the nozzle rows are formed by the wipers, and a flush unit that carries out a flush process after the wipe process by injecting ink from nozzle holes into which ink of different color from color of ink that is injected from the nozzle holes flows during the wipe process. According to the apparatus, an amount of ink consumed in the flush process can be reduced and a replacement cycle of a mist-absorbing material for absorbing ink mists generated during the flush process can be prolonged.

Abstract translation: 喷墨图像形成装置包括喷墨头，每个喷墨头具有两个或更多个喷嘴列，从其喷射不同颜色的墨（每个喷嘴列包括喷嘴孔），擦拭单元，其包括擦拭器并执行擦拭过程以擦拭 通过擦拭器在其上形成喷嘴列的表面上残留有墨水;以及冲洗单元，其在擦拭处理之后通过从注入墨的颜色的喷墨孔中注入墨而进行冲洗 在擦拭过程中喷嘴孔流动。 根据该装置，可以减少冲洗过程中消耗的墨量，并且可以延长在冲洗过程中产生的用于吸收墨雾的吸雾材料的更换周期。

公开(公告)号：US08998198B2

公开(公告)日：2015-04-07

申请号：US13973153

申请日：2013-08-22

Applicant: Riso Kagaku Corporation

Inventor： Takeshi Yamajo ,  Hiroshi Sugitani ,  Masashi Hara ,  Hitoshi Arai ,  Kenji Obata

IPC: B65H31/00 ,  B65H31/24 ,  B65H29/70 ,  B65H31/10 ,  B65H31/34 ,  B65H33/08

CPC classification number: B65H31/24 ,  B65H29/70 ,  B65H31/10 ,  B65H31/34 ,  B65H33/08 ,  B65H2301/42194 ,  B65H2301/42252 ,  B65H2301/51214 ,  B65H2301/5133 ,  B65H2301/5321 ,  B65H2404/7412 ,  B65H2404/743 ,  B65H2405/1122 ,  B65H2405/1134 ,  B65H2405/1136 ,  B65H2405/114 ,  B65H2405/11425 ,  B65H2405/15 ,  B65H2511/12 ,  B65H2511/13 ,  B65H2511/222 ,  B65H2513/514 ,  B65H2601/111 ,  B65H2601/255 ,  B65H2601/273 ,  B65H2801/06 ,  B65H2801/15 ,  B65H2801/18 ,  B65H2220/01 ,  B65H2220/02 ,  B65H2220/11

Abstract: A controller temporarily opens a pair of side fence plates under a prescribed condition to move the side fence plates away from both side ends of sheets in a sheet width direction, after each time stacking of sheets at a first or second sheet stacking position is completed, but before a sheet receiving tray is temporarily lifted down to offset an offset guide plate and an end fence plate. Else, the controller sets an amount of lifting up and down of the sheet receiving tray such that the amount at the second sheet stacking position is smaller than that at the first sheet stacking position when offsetting the offset guide plate and the end fence plate after each time the stacking of sheets at the first or second sheet stacking position on the sheet receiving tray is completed.

Abstract translation: 控制器在规定的条件下临时打开一对侧挡板，以便在第一或第二纸张堆叠位置的纸张的每次堆叠完成之后，使侧挡板从纸张宽度方向的两侧端部移开， 但是在片材接收盘被临时提升以偏移偏移导板和端挡板之前。 否则，控制器设置片材接收托盘的升降量，使得当第二片材堆叠位置上的量在第一片材堆叠位置之后小于在第一片材堆叠位置偏移偏移导向板和端部挡板后的量时 完成在片材接收托盘上的第一或第二片材堆叠位置处堆叠片材的时间。