公开(公告)号：US3628017A

公开(公告)日：1971-12-14

申请号：US3628017D

申请日：1970-06-18

Applicant: ITEK CORP

Inventor： LERNER HARRY

IPC: G01J1/48 ,  H01G9/20 ,  H01M14/00 ,  G01J1/42

CPC classification number: H01M14/005 ,  G01J1/48 ,  H01G9/20

Abstract: This disclosure relates to an ultraviolet light-sensitive cell which is useful for detecting and measuring the intensity of ultraviolet light. The cell comprises an electrolyte, a metalcontaining semiconductor electrode and a counter electrode.

公开(公告)号：US3700449A

公开(公告)日：1972-10-24

申请号：US3700449D

申请日：1970-03-23

Applicant: ITEK CORP

Inventor： LERNER HARRY

IPC: G03C1/705 ,  G03C5/24

CPC classification number: G03C1/705 ,  Y10S430/162

Abstract: THIS INVENTION RELATES TO A PHOTOGRAPHIC IMAGING MEDIUM COMPRISING A SUBSTRATE, REVERSIBLY ACTIVATABLE PHOTOCONDUCTOR LAYER PREFERABLY HAVING A THICKNESS OF LESS THAN ABOUT 2 MICRONS, AND A WATER OR ALCOHOL SOLUBLE, TRANSPARENT BARRIER LAYER HAVING A LOW PERMEABILITY TO OXYGEN OVER SAID RADIATION ACTIVATABLE PHOTO-CONDUCTOR LAYER. THE PHOTOGRAPHIC IMAGING MEDIUM IS CHARACTERIZED BY THE BARRIER LAYER WHICH SUBSTANTIALLY PROLONGS DECAY TIME OF A LATENT IMAGE STORED IN THE PHOTOCONDUCTOR WHICH LATENT IMAGE HAS BEEN FORMED BY EXPOSURE TO A SOURCE OF ACTIVATING RADIATION. PROLONGED DECAY TIME IS BELIEVED TO BE DUE TO THE BARRIER LAYER PREVENTING MASS TRANSPORT OF OXYGEN FROM THE ATMOSPHERE TO THE PHOTOCONDUCTOR.

公开(公告)号：US3862843A

公开(公告)日：1975-01-28

申请号：US25876972

申请日：1972-06-01

Applicant: ITEK CORP

Inventor： LERNER HARRY

IPC: G03C1/00 ,  G03C1/10 ,  G03C1/705 ,  G03C5/56 ,  G03C5/58 ,  G03F7/06 ,  G03F7/07 ,  G03C1/48 ,  G03C1/06 ,  G03C5/24

CPC classification number: G03C1/10 ,  G03C1/705 ,  G03C5/58 ,  G03F7/06

Abstract: A physical developer activator material such as a material which reacts with the oxidized form of the reducing agent component of a physical developer is added to a photographic element comprising physical development nuclei or a photosensitive material capable of generating such nuclei. A preferred physical development activator material is an organic acid or a salt of an organic acid such as ammonium tartrate. This photographic element is utilized in a process comprising forming an image of physical development nuclei and then contacting the medium with a unitary physical developer comprising a solution of metal ions and a reducing agent for these metal ions. The photographic element of this invention is also utilized in a printing process comprising forming an image pattern of physical development nuclei in the photographic element, contacting the element with a unitary physical developer and then using the thus imaged element as a printing plate. The addition of the physical developer activator in the element used in this printing process improves the printing capability of the highlight dots or fine detail areas of the final printing plate. A preferred photographic element is one wherein the layer of physical development nuclei or photosensitive material capable of generating such nuclei has a thickness of less than about 2 microns. Preferred photosensitive materials useful in these processes are silver halide, titanium dioxide, zinc oxide, and tin oxide.

Abstract translation: 将物理显影剂活化剂材料，例如与物理显影剂的还原剂组分的氧化形式反应的材料加入到包含物理显影核或能够产生这种核的感光材料的照相元件中。 优选的物理显影活化剂材料是有机酸或有机酸的盐，例如酒石酸铵。 该照相元件用于包括形成物理发育核的图像，然后使介质与包含金属离子溶液和这些金属离子的还原剂的整体物理显影剂接触的方法。 本发明的照相元件还用于印刷过程中，包括在照相元件中形成物理显影核的图像图案，使元件与整体物理显影剂接触，然后使用这样成像的元件作为印刷版。 在该印刷工艺中使用的元件中添加物理显影剂活化剂可以提高最终印版的高亮点或精细细节区域的印刷能力。 优选的照相元件是能够产生这种核的物理显影核或感光材料层的厚度小于约2微米。 用于这些方法的优选光敏材料是卤化银，二氧化钛，氧化锌和氧化锡。