专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

61. 发明专利

JP2004223928A Method for manufacturing plastic optical element and plastic optial element/optical scanning device 审中-公开
公开(公告)号：JP2004223928A
公开(公告)日：2004-08-12
申请号：JP2003015534
申请日：2003-01-24
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SAWADA KIYOTAKA , YAMANAKA YASUO , HARADA TOMOHIRO
IPC分类号： G02B26/10 , B29C33/38 , B29C45/76 , B29L11/00 , G02B26/12
摘要： PROBLEM TO BE SOLVED: To provide a plastic optical element which is applicable to a high-precision lens used for an optical scanning device with a small beam spot diameter and stably satisfies the requirements of a high-precision optics without a deterioration in optical characteristics due to a change with time in a refractive index distribution. SOLUTION: The method for manufacturing the plastic optical element comprises the following procedures described below. First, molding conditions favorably influencing the stable formation of the surface shape of the plastic optical element as a molded object, are set with the help of a molding tool, and after releasing the molded object from the molding tool, cooling conditions for achieving the cooling of the molded object at a prescribed rate within a prescribed temperature range, are established. Next, the refractive index distribution of the molded object is measured and a shape error is calculated so as to offset an imaging position deviation based on the measurements. Further, the surface shape of the molding tool is correctively worked so as to reduce the shape error. Finally, the molding operation is carried out under the molding conditions set in the first process using the molding tool whose surface shape is correctively worked and the molded object is obtained under the cooling conditions set in the second process after releasing the molded object. COPYRIGHT: (C)2004,JPO&NCIPI

62. 发明专利

JP2004130750A Manufacturing process of plastic optical element and plastic optical element 审中-公开
公开(公告)号：JP2004130750A
公开(公告)日：2004-04-30
申请号：JP2002299776
申请日：2002-10-15
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SAWADA KIYOTAKA , YAMANAKA YASUO , HARADA TOMOHIRO
IPC分类号： G02B3/00 , B29C45/72 , B29C71/00 , B29L11/00
摘要： PROBLEM TO BE SOLVED: To efficiently produce a plastic optical element having a more highly precise shape and a refractive index inside thereof being uniform.
SOLUTION: Lens 1 molded in a mold 2 and taken out therefrom is annealed at a specified cooling rate in a specified temperature range determined by a resin material in an annealing step 10, thereby making a residual stress frozen inside of the lens 1 very small to prevent a shape of a transferred surface from being deteriorated. After that, the lens 1 being at a temperature not higher than a lower limit of the temperature range of the annealing step 10 is heated to a definite temperature in the specified temperature range determined by the resin material, is kept for a definite time and then is annealed at a definite annealing rate to homogenize the inside of the lens 1 in a reheating and annealing step 11, to produce the lens 1 having a high degree of a shape accuracy and a uniform refractive index of the inside.
COPYRIGHT: (C)2004,JPO

63. 发明专利

JP2004058280A Method for manufacturing resin molded product, mold, resin molded product, and optical unit 审中-公开
公开(公告)号：JP2004058280A
公开(公告)日：2004-02-26
申请号：JP2002215621
申请日：2002-07-24
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： YAMANAKA YASUO , SAWADA KIYOTAKA , HARADA TOMOHIRO
IPC分类号： B29C45/26 , B29C45/43 , B29L11/00
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a resin molded product by which an injection-molded resin molded product is finished with high precision regardless of its shape, large-sized, thick-walled or partially walled, by certainly reducing an adhesive force between the resin molded product and the cavity piece of a mold, and a resin injection-molding mold and the resin molded product manufactured by this method. SOLUTION: The adhesive force between a cavity face 13b and the face to be molded 20d of a plastic material 20 molded inside a cavity 12 is reduced by vibrating the cavity piece 13 by fine displacement. COPYRIGHT: (C)2004,JPO

64. 发明专利

JP2003053777A Manufacturing method for plastic molded article 审中-公开
标题翻译：塑料制品的制造方法
公开(公告)号：JP2003053777A
公开(公告)日：2003-02-26
申请号：JP2001247837
申请日：2001-08-17
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： SAWADA KIYOTAKA , YAMANAKA YASUO , WATABE JUN , HARADA TOMOHIRO
IPC分类号： B29C45/40 , B29C45/14 , B29C45/56 , B29L7/00
摘要： PROBLEM TO BE SOLVED: To obtain a molded article of higher accuracy by reducing the adhesion force of a cavity piece and a resin, in a manufacturing method for the molded article (optical element) forming a gap between the cavity piece constituting a surface other than a transfer surface and the resin during a period when the molten resin is infected and charged in a mold to be cooled under a softening temperature.
SOLUTION: In the manufacturing method, a pair of molds having surfaces for demarcating a cavity are used, the molten resin is injected and charged in the mold held to a temperature below the softening temperature of the resin, the pressure of the resin is generated to bring the transfer surface into close contact with the resin, and the resin is cooled under the softening temperature to form the gap between the wall surface forming a surface other than the transfer surface and the resin surface. A heat-resistant film material not melted within the resin softening temperature region is inserted in the gap between the wall surface and the cavity, the molten resin heated to the softening temperature region is injected in the cavity to fill the cavity, the pressure of the resin is generated to bring the resin into close contact with the transfer surface, the gap is formed between the film material and the wall surface of the cavity, the resin is cooled under the softening temperature, and the molded article is ejected after mold opening.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题为了通过降低空腔件和树脂的粘附力来获得更高精度的模塑制品，在用于形成构成表面以外的表面的空腔件之间的间隙的模塑制品（光学元件）的制造方法中，在熔融树脂感染并在软化温度下待冷却的模具中充填的期间中的转印面和树脂。解决方案：在制造方法中，使用具有用于界定空腔的表面的一对模具，将熔融树脂注入并充入保持在低于树脂的软化温度的温度下的模具中，产生树脂的压力使转印表面与树脂紧密接触，并且在软化温度下冷却树脂以形成形成转印表面以外的表面的壁面与树脂表面之间的间隙。在树脂软化温度区域内未熔融的耐热薄膜材料插入到壁面和空腔之间的间隙中，将加热到软化温度区域的熔融树脂注入空腔中以填充空腔，产生树脂以使树脂与转印表面紧密接触，在薄膜材料和空腔的壁表面之间形成间隙，在软化温度下冷却树脂，并且模制品在开模后被排出。

65. 发明专利

JP2003001689A Method for manufacturing resin molded product and optical element manufactured by this manufacturing method 审中-公开
标题翻译：用于制造树脂模制产品的方法和由该制造方法制造的光学元件
公开(公告)号：JP2003001689A
公开(公告)日：2003-01-08
申请号：JP2001188038
申请日：2001-06-21
申请人： Ricoh Co Ltd , 株式会社リコー
发明人： HARADA TOMOHIRO , YAMANAKA YASUO , WATABE JUN , SAWADA KIYOTAKA
IPC分类号： G02B3/00 , B29C45/40 , B29C45/78 , B29L11/00
摘要： PROBLEM TO BE SOLVED: To provide a method for manufacturing a resin molded product by which its high shape dimensional precision can be maintained, even when a molding cycle is shortened.
SOLUTION: A molten resin is fully injected into a mold heated above a heat-deforming temperature of a resin material to be used and the resin molded product is unloaded from the mold when the temperature of the resin molded product in the mold is uniform. After that, the resin molded product is cooled slowly until its temperature is below the heat-deformation temperature of the resin material used.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：即使缩短成型周期，也可以提供可以保持高形状尺寸精度的树脂成型体的制造方法。解决方案：当模具中的树脂模制产品的温度均匀时，熔融树脂被完全注入加热到所使用的树脂材料的热变形温度以上的模具中，并且树脂模制产品从模具中卸载。之后，缓慢冷却树脂成形体，直到其温度低于所使用的树脂材料的热变形温度。

66. 发明专利

AU2009264661A1 Fire retardant resin composition 未知
公开(公告)号：AU2009264661A1
公开(公告)日：2010-01-07
申请号：AU2009264661
申请日：2009-06-16
申请人： RICOH CO LTD
发明人： AOKI DAN , NISHIO YOSHIYUKI , YAMANAKA YASUO , HARADA TADAKATSU , YAGINUMA HIDEKAZU
IPC分类号： C08L101/00 , C08L1/00 , C08L67/00
摘要： A disclosed fire retardant resin composition includes a thermoplastic resin and a fire retardant. The fire retardant is formed of phosphorated polysaccharide that is formed by attaching thiophosphoric acid ester or phosphoric acid ester to a side chain of natural polysaccharide.

67. 发明专利

AU2009264661B2 Fire retardant resin composition 未知
公开(公告)号：AU2009264661B2
公开(公告)日：2012-03-08
申请号：AU2009264661
申请日：2009-06-16
申请人： RICOH CO LTD
发明人： AOKI DAN , NISHIO YOSHIYUKI , YAMANAKA YASUO , HARADA TADAKATSU , YAGINUMA HIDEKAZU
IPC分类号： C08L101/00 , C08L1/00 , C08L67/00
摘要： A disclosed fire retardant resin composition includes a thermoplastic resin and a fire retardant. The fire retardant is formed of phosphorated polysaccharide that is formed by attaching thiophosphoric acid ester or phosphoric acid ester to a side chain of natural polysaccharide.

68. 发明公开

EP2294140A4 FIRE RETARDANT RESIN COMPOSITION 失效
标题翻译：阻燃树脂组合物
公开(公告)号：EP2294140A4
公开(公告)日：2011-07-27
申请号：EP09773324
申请日：2009-06-16
申请人： RICOH CO LTD
发明人： HARADA TADAKATSU , YAMANAKA YASUO , YAGINUMA HIDEKAZU , NISHIO YOSHIYUKI , AOKI DAN
IPC分类号： C09K21/14 , C08L1/00 , C08L67/00 , C08L101/00 , C08L101/16
CPC分类号： C08B7/00 , C08L1/20 , C08L67/02 , C08L67/04 , C08L101/16 , C09K21/14 , C08L2666/26

69. 发明公开

EP2681281A4 FLAME RETARDANT RESIN COMPOSITION AND MOLDED PRODUCT 有权
标题翻译： FLAMMHEMMENDE HARZZUSAMMENSETZUNG UND FORMPRODUKT DARAUS
公开(公告)号：EP2681281A4
公开(公告)日：2015-01-14
申请号：EP12752198
申请日：2012-02-24
申请人： RICOH CO LTD
发明人： HARADA TADAKATSU , YAMANAKA YASUO , MATSUSHITA YASUYUKI , FUKUSHIMA KAZUHIKO
IPC分类号： C08L101/00 , C08L67/00 , C08L69/00 , C08L97/00
CPC分类号： C08L67/04 , C08H6/00 , C08K3/016 , C08K5/0066 , C08K5/521 , C08L27/00 , C08L55/02 , C08L69/00 , C08L97/005 , C08L2201/02
摘要： A flame retardant resin composition including: a thermoplastic resin; and a flame retardant, wherein the flame retardant includes a phosphorylated lignin derivative, and wherein the phosphorylated lignin derivative is produced by adding phosphoric acid to a lignin derivative obtained by subjecting a naturally occurring lignin to a predetermined treatment.
摘要翻译：一种阻燃树脂组合物，包括：热塑性树脂; 和阻燃剂，其中所述阻燃剂包括磷酸化木质素衍生物，并且其中所述磷酸化木质素衍生物通过将磷酸添加到通过使天然存在的木质素进行预定处理而获得的木质素衍生物中来制备。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式