Process for producing phthaloyl dichlorides of high purity
    1.
    发明授权
    Process for producing phthaloyl dichlorides of high purity 失效
    生产高纯度邻苯二甲酰氯的方法

    公开(公告)号:US4165337A

    公开(公告)日:1979-08-21

    申请号:US844814

    申请日:1977-10-25

    CPC分类号: C07C17/14 C07C51/60

    摘要: A batchwise or continuous process for producing isophthaloyl dichloride or terephthaloyl dichloride having a high purity which comprises, in combination, (1) a first step of producing .alpha.,.alpha.,.alpha.,.alpha.',.alpha.',.alpha.'-hexachloroxylene by reacting meta- or para-xylene with chlorine under the irradiation of ultraviolet-containing rays, the reaction being carried out in the presence of, as a solvent, .alpha.,.alpha.,.alpha.,.alpha.',.alpha.',.alpha.'-hexachloroxylene added at the outset of the reaction; (2) a second step of producing isophthaloyl dichloride or terephthaloyl dichloride by reacting the .alpha.,.alpha.,.alpha.,.alpha.',.alpha.',.alpha.'-hexachloroxylene obtained in the first step with isophthalic acid or terephthalic acid; and (3) a third step of purifying the isophthaloyl dichloride or terephthaloyl dichloride obtained in the second step by dissolving the isophthaloyl dichloride or terephthaloyl dichloride in 0.3 to 6 parts by weight; per part by weight of the phthaloyl dichloride, of C.sub.6 -C.sub.10 aliphatic hydrocarbon solvent, and cooling the solution to a temperature of the specified range thereby to recrystallize the phthaloyl dichloride.

    摘要翻译: 用于制备具有高纯度的间苯二酰二氯或对苯二甲酰氯的间歇或连续方法,其组合包括(1)通过使间位化合物反应生成α,α,α,α',α',α'-六氯代二甲苯的第一步骤, 或对二甲苯与氯在紫外线照射下反应,反应在作为溶剂的存在下进行,α,α,α,α',α',α'-六氯化碳在开始时加入 反应; (2)通过使第一步获得的α,α,α,α',α',α'-六氯二苯与间苯二甲酸或对苯二甲酸反应,生产间苯二酰二氯或对苯二甲酰氯的第二步; 和(3)通过将间苯二酰二氯或对苯二酰氯溶解在0.3至6重量份中来纯化在第二步中获得的间苯二酰二氯或对苯二甲酰氯的第三步骤; 每重量份邻苯二甲酰二氯化物,C 6 -C 10脂族烃溶剂,并将溶液冷却至指定范围的温度,从而使邻苯二甲酰氯二氯化物重结晶。

    Process for preparing perchloromethylbenzene
    2.
    发明授权
    Process for preparing perchloromethylbenzene 失效
    制备全氯甲苯的方法

    公开(公告)号:US4048033A

    公开(公告)日:1977-09-13

    申请号:US504989

    申请日:1974-09-10

    CPC分类号: C07C17/14

    摘要: A process for producing perchloromethylbenzene by reacting a methylbenzene selected from the group consisting of compounds of the formula ##STR1## WHEREIN X is a chlorine or bromine atom, m is a number of 0, 1 or 2, and n is an integer of 1 to 3,And compounds of the above formula wherein the side chain methyl group is partially chlorinated, with chlorine under the irradiation of light containing ultraviolet rays, characterized in that the reaction is carried out in the presence of said perchloromethylbenzene in the reaction system as a solvent.

    摘要翻译: 一种通过使选自下列化学式的甲苯的甲苯生产全氯甲苯的方法:其中X是氯或溴原子,m是0,1或2的数,n是1至 3,上述组合物和侧链甲基的化合物在含有紫外线的光的照射下被部分氯化,其特征在于反应是在作为溶剂的反应系统中存在的全氟代苯乙烯存在下进行的 。

    Semiconductor laser device
    5.
    发明授权
    Semiconductor laser device 有权
    半导体激光器件

    公开(公告)号:US06795480B1

    公开(公告)日:2004-09-21

    申请号:US09662704

    申请日:2000-09-15

    IPC分类号: H01S308

    CPC分类号: H01S5/028

    摘要: A semiconductor laser device is formed by laminating optical confinement layers and active layers so as to dispose each of said active layers between said optical confinement layers, wherein one of the opposite ends perpendicular to the junction planes of the individual layers in the semiconductor multi-layer film is coated with a low reflection film and the other of the ends is coated with a high reflection film, wherein the low reflection film is an Al2O3 film having a resistivity of 1×1012 &OHgr;·m or more, preferably 1×1013 &OHgr;·m or more, and having a stoichiometric ratio composition, which is deposited by, for example, an electron cyclotron resonance sputtering process. The present invention has realized a semiconductor laser device exhibiting a prolonged duration of operating life and having high driving reliability, which is advantageous in that a catastrophic optical damage hardly occurs and a lowering of the optical output after driving at a constant current is suppressed, and thus, it is preferably used as an optical transmitter for the optical communication.

    摘要翻译: 通过层叠光学限制层和有源层来形成半导体激光器件,以将每个所述有源层设置在所述光限制层之间,其中相对端中的一个垂直于半导体多层中的各个层的结面 薄膜涂覆有低反射膜,另一端涂覆有高反射膜,其中低反射膜是电阻率为1×10 12Ω·m或更大,优选1×10 13的Al 2 O 3膜。 Ωm以上,并且具有通过例如电子回旋共振溅射法沉积的化学计量比组成。 本发明实现了延长使用寿命并具有高驱动可靠性的半导体激光器件,其优点在于几乎不发生灾难性的光学损伤,并且抑制了以恒定电流驱动后的光输出的降低,以及 因此,优选用作光通信的光发射机。

    Image recording with adaptation of resolution to printer
    6.
    发明授权
    Image recording with adaptation of resolution to printer 失效
    具有适应打印机分辨率的图像记录

    公开(公告)号:US5819010A

    公开(公告)日:1998-10-06

    申请号:US290078

    申请日:1994-08-15

    摘要: The present invention is structured in such a manner that, when multivalued pixel data which constitutes a multivalued image are supplied, a predetermined number of interpolated pixel data are generated and inserted between the supplied and successive pixels. At this time, the gradient of each of the interpolated pixels is calculated and determined in accordance with the gradient of the supplied neighboring multivalued pixels. Thus, the image is recorded on a recording medium in accordance with image data including the interpolated pixel. As a result, print information processed so as to be printed by a low resolution printer can be printed with the same size and high quality as when printed by a high resolution printer according to the present invention.

    摘要翻译: 本发明的结构使得当提供构成多值图像的多值像素数据时,产生预定数量的内插像素数据并插入在所提供的和连续的像素之间。 此时,根据所提供的相邻多值像素的梯度来计算和确定每个内插像素的梯度。 因此,根据包括内插像素的图像数据将图像记录在记录介质上。 结果,可以以与通过根据本发明的高分辨率打印机打印相同的尺寸和高质量来打印由低分辨率打印机打印的处理的打印信息。

    Image forming apparatus with optical reflective density of image
adjusted according to image resolution discriminated from signal other
than image signal
    7.
    发明授权
    Image forming apparatus with optical reflective density of image adjusted according to image resolution discriminated from signal other than image signal 失效
    根据除图像信号之外的信号识别的图像分辨率调整图像的光学反射密度的图像形成装置

    公开(公告)号:US5504588A

    公开(公告)日:1996-04-02

    申请号:US401235

    申请日:1995-03-09

    CPC分类号: G03G15/065 G06K15/1295

    摘要: An image forming apparatus which can adjust a density comprises: a first input device to input image information; a second input device to input the kind of image information; an image forming circuit such as a printer form an image on the basis of image information which can vary an image forming density; and a density adjusting circuit to adjust the image forming density of the image forming circuit in accordance with the kind of input image information. The second input device inputs a signal indicative of whether the input image information indicates a text image or a graphics image or whether it denotes Japanese or European/English language. The second input device inputs a signal indicative of the kind of font included in the input image information or a signal indicative of a resolution of an output image which is formed by the printer.

    摘要翻译: 可以调节浓度的图像形成装置包括:输入图像信息的第一输入装置; 输入图像信息种类的第二输入装置; 诸如打印机的图像形成电路基于可以改变图像形成密度的图像信息形成图像; 以及浓度调整电路,用于根据输入图像信息的种类来调整图像形成电路的图像形成密度。 第二输入装置输入指示输入图像信息是指示文本图像还是图形图像的信号,或者是否表示日语或欧洲/英国语言。 第二输入装置输入指示包括在输入图像信息中的字体种类的信号或指示由打印机形成的输出图像的分辨率的信号。