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    • 5. 发明授权
    • Method and device for instant recording of light images while observing said light images
    • 用于在观察到照明图像时轻松记录光图像的方法和装置
    • US3732007A
    • 1973-05-08
    • US3732007D
    • 1969-02-25
    • MINOLTA CAMERA KK
    • KUSHIMA TTANAKA SSEINO K
    • G03G5/024G03G15/056G03G13/04
    • G03G15/056G03G5/024
    • The present invention relates to a method and a device for instant recording of light images while observing said light images which makes use of a three layer photosensitive plate having photopermeability and serving as a rear screen so as to enable projected light images to be visible, and composed of a high insulating layer, a photosensitive layer having the P.I.P. character, and a conductive layer; the exposure for uniformly irradiating the overall surface of the photosensitive plate is given from one face thereof and simultaneously the voltage of an optional polarity is impressed on the photosensitive plate to give an overall uniform charge thereto, and light images are irradiated onto the photosensitive plate and thus, while observing the light images effected on the rear screen, the voltage of opposite polarity to said polarity is impressed at any time desired to give the exposure of light images and thereby recording of light images is effected onto said photosensitive plate.
    • 本发明涉及一种用于即时记录光图像的方法和装置,同时观察使用具有光渗透性并用作后屏幕的三层感光板的所述光图像,以使投射光图像可见,以及 由高绝缘层,具有PIP的感光层组成 字符和导电层; 对感光板的整个表面进行均匀照射的曝光是从其一面给出的,同时将感光板上施加任意极性的电压施加到整个均匀的电荷,并将光图像照射到感光板上, 因此,在观察在后屏幕上产生的光图像的同时,在期望给出光图像的曝光的任何时候施加与所述极性相反极性的电压,从而在所述感光板上记录光图像。
    • 7. 发明授权
    • Reversible or irreversible production of an image
    • 可逆或不可逆转的图像制作
    • US5418555A
    • 1995-05-23
    • US975886
    • 1992-11-13
    • Volker BachKarl-Heinz EtzbachHarald FuchsKarl SiemensmeyerGehard Wagenblast
    • Volker BachKarl-Heinz EtzbachHarald FuchsKarl SiemensmeyerGehard Wagenblast
    • B41M5/36B41M5/28G02F1/1333G02F1/141G03G5/00G03G5/024G03G13/056G03G15/056G01D9/00G01D15/06
    • B41M5/281G02F1/133365G03G13/056G03G15/056G03G5/024G02F1/141
    • In a novel process for the reversible or irreversible production of an image by the imagewise action of energy on a recording layer, resulting in a pattern of surface charges which corresponds to the imagewise action of the energy, on the surface of the recording layer, the recording layer used is one which contains or consists of an organic material which solidifies in glassy form, is nonphotoconductive or only slightly photoconductive and has permanent dipoles, wherein the pattern of surface charges is produced, without or almost without formation of free charge carriers, by reversible imagewise orientation of some or all of the permanent dipoles present in the recording layer, with the aid of an electric field applied imagewise. The novel process is advantageously carried out using a novel apparatus which comprises a suitable recording element, apparatus for the imagewise action of an electric field on the recording layer of the recording element and a counter-electrode which is in direct, non-frictional contact with the recording layer and can be removed again therefrom. The pattern of surface charges which is produced by the novel process can be treated with liquid or solid toners. The resulting toner image can then either be fixed on the recording layer or transferred from the recording layer to another surface, after which the pattern of surface charges can be deleted by uniform action of energy. Thereafter, a further image can be produced. In this way, it is possible to produce photocopies without the high voltage sources required in the conventional electrophotographic processes having to be used.
    • 在通过能量在记录层上的成像作用的可逆或不可逆的图像生成的新颖方法中,在记录层的表面上产生对应于能量的成像作用的表面电荷的图案, 使用的记录层是含有或由有机材料组成的材料,其以玻璃状固化,不受光导或仅具有光导电性并且具有永久偶极子,其中产生表面电荷的图案,没有或几乎不形成游离载流子,由 借助于成像的电场,存在于记录层中的一些或全部永久偶极子的可逆图像取向。 新颖的方法有利地使用新颖的装置进行,该装置包括合适的记录元件,用于在记录元件的记录层上的电场的成像作用的装置和与电极直接,非摩擦接触的对电极 记录层,并且可以从其再次移除。 通过新方法生产的表面电荷的图案可以用液体或固体调色剂处理。 所得到的调色剂图像然后可以固定在记录层上或从记录层转移到另一个表面,之后可以通过均匀的能量作用来删除表面电荷的图案。 此后,可以产生另外的图像。 以这种方式,可以在没有必须使用常规电子照相方法所需的高电压源的情况下生产复印件。
    • 8. 发明授权
    • Electrophotographic process with a.c. charger producing greater positive
charge
    • 电子照相过程与a.c. 充电器产生更大的正电荷
    • US4526848A
    • 1985-07-02
    • US549069
    • 1983-11-07
    • Takao OkadaAkitoshi TodaYoshiyuki Mimura
    • Takao OkadaAkitoshi TodaYoshiyuki Mimura
    • G03G15/05G03G13/056G03G15/056G03G13/052G03G13/24
    • G03G15/056G03G13/056Y10S430/102
    • An electrophotographic process employs an electrophotographic photosensitive member of a basic construction in which a photoconductive layer and a transparent insulator layer are sequentially laminated on the surface of a conductive supporter. The process in one preferred embodiment comprises a first step of providing a primary charge uniformly from the surface side of the transparent insulator layer, a second step of performing a secondary corona charging during an imagewise exposure by applying an a.c. voltage in which the firing angle of a negative half wave is controlled in phase to be within a phase angle corresponding to a lower voltage than the firing angle so that the positive discharge period may be longer than the negative one during one period, and a third step of forming an electrostatic latent image on the transparent insulator layer by applying a uniform exposure.
    • 电子照相方法使用基本结构的电子照相感光构件,其中光导电层和透明绝缘体层依次层压在导电支撑体的表面上。 一个优选实施方案中的方法包括从透明绝缘体层的表面侧均匀提供初级电荷的第一步骤,在成像曝光期间通过施加直流电流进行二次电晕充电的第二步骤。 将负半波的触发角相位控制在与触发角以下的电压相对应的相位角内的电压,使得在一个周期期间正放电周期可能比负值长, 通过均匀曝光在透明绝缘体层上形成静电潜像的步骤。
    • 9. 发明授权
    • Method and apparatus for electrophotography capable of changing over
images from positive to negative and vice versa
    • 用于电子照相的方法和装置能够将图像从正转换成负数,反之亦然
    • US4486088A
    • 1984-12-04
    • US383098
    • 1982-05-28
    • Takashi KitamuraMichio Ito
    • Takashi KitamuraMichio Ito
    • G03G13/056G03G15/056G03G15/30G03G13/02
    • G03G15/056G03G13/056G03G15/30
    • A novel method and apparatus for electrophotography is disclosed which enables selection the mode of image formation among positive-positive, negative-positive and combinations thereof without any need of changing the polarity of developing toner. The present invention is made on the basis of a known electrophotographic system in which a photosensitive member composed of essentially an electrically conductive substrate, a photoconductive substance layer and an insulating surface layer and which comprises the steps of charging the insulating surface layer, image-wise exposing it to light so as to form a first image almost simultaneously with or some time after the charging step, subjecting it to corona discharge with nearly simultaneous image-wise exposure so as to form a second image and uniformly exposing the whole surface of the photosensitive medium to light so as to form an electrostatic latent image corresponding to a composite image resulting from the first and second images. According to the invention the first and second images to be formed are identical with each other and either one of the two images is selectively exposed to obtain the desired image.
    • 公开了一种用于电子照相术的新型方法和装置,其能够选择正 - 正,负 - 正和其组合之间的图像形成模式,而不需要改变显影调色剂的极性。 本发明是在已知的电子照相系统的基础上进行的,其中感光部件由基本上由导电性基体,感光性物质层和绝缘性表面层组成,其特征在于,包括以下步骤:对绝缘表面层进行成像 将其曝光以便在充电步骤之后几乎同时或一段时间形成第一图像,使其以几乎同时的图像曝光进行电晕放电,以形成第二图像,并均匀地曝光感光体的整个表面 中等至亮以形成对应于由第一和第二图像产生的合成图像的静电潜像。 根据本发明,要形成的第一和第二图像彼此相同,并且选择性地暴露两个图像中的任一个以获得期望的图像。