摘要:
The present disclosure is directed to a carbon monoxide absorbing liquid containing a cuprous ion, hydrochloric acid and titanum trichloride.Titanium trichloride is effective in increasing the carbon monoxide absorption quantity. Furthermore, titanium trichloride remarkably increases the oxygen resistance. Therefore, this absorbing liquid can be used continuously and for a long time.
摘要:
Disclosed are optical recording media having interposed an organic compound between a metal stamper and a transparent substrate and forming a replica onto which a signal surface formed on the metal stamper is transferrable to the transparent substrate.
摘要:
An optical disc wherein a transparent base plate is made from a special light-curable resin composition comprising at least one compound of the formula: ##STR1## wherein R.sub.1 =H or methyl and n=0-5, and a photopolymerization initiator, is excellent in heat resistance, mechanical strength, moisture resistance, etc.
摘要:
A substrate of a recording member comprising a hard base, a first organic substance layer which is formed on the base, and a second organic substance layer which is made of a solvent-soluble organic substance and which is formed on a surface of the first organic substance layer opposite to a surface thereof lying in contact with the base. This substrate can be reused.
摘要:
In an electrophotographic member employing an amorphous silicon photoconductive layer, a part which is at least 10 nm thick inwardly of the amorphous silicon layer from the surface (or interface) of the amorphous silicon layer is made of amorphous silicon which has an optical forbidden band gap of at least 1.6 eV and a resistivity of at least 10.sup.10 .OMEGA..cm. The electrophotographic member exhibits a satisfactory resolution and good dark-decay characteristics. Further, a region which has an optical forbidden band gap narrower than that of the amorphous silicon forming the surface (or interface) region is disposed within the amorphous silicon layer to a thickness of at least 10 nm, whereby the sensitivity of the electrophotographic member to longer wavelengths of light can be enhanced.
摘要:
Disclosed is an electrophotographic plate having a laminated structure comprising a first Se layer containing 3 to 10% by weight of As, a second Se layer containing 40 to 47% by weight of Te and 3 to 10% by weight of As and a fourth Se layer consisting solely of Se or comprising Se and up to 10% by weight of As or an organic semiconductor layer, wherein a substrate is arranged so that at least the face of the substrate which is contiguous to the face of one of said first Se layer and said fourth Se layer or organic semiconductor layer, that is located on the outer side of the laminated structure, is electrically conductive.It is preferred that the fourth Se layer be formed by vacuum evaporation deposition while maintaining the substrate temperature at 50.degree. to 80.degree. C. The residual potential of the electrophotographic plate can be reduced.
摘要:
According to the present invention, etching is used to form a concave and convex pattern corresponding to information on an embossing metal mold comprising a conductive layer and a layer which includes an Ni electric-plating layer, or an Ni electric-plating layer, so that the surface of the embossing metal mold will not be contaminated even if processing conditions are somewhat changed, and that the mold will have less defects. Thus, optical disk substrates of high quality can be produced. Besides, time required for manufacturing a stamper can be shortened.
摘要:
An information recording medium which is superior in record/read-out characteristics, high in sensitivity and good in stability can be provided at a low cost by using, as an information-recording medium in which recording is carried out due to change in atomic arrangement upon irradiation with a laser beam, an information-recording medium comprising substrates 1, 1' , recording layers 2, 2' changing in atomic arrangement upon irradiation with a recording energy beam, and reflective layers which are provided contiguous to the recording layers and the recording layer has an average composition represented by A.sub.w D.sub.x Sb.sub.y Se.sub.z (wherein w, x, y and z are in the ranges of 0.ltoreq.w.ltoreq.30, 3.ltoreq.x.ltoreq.57, 3.ltoreq.y.ltoreq.57 and 40.ltoreq.z.ltoreq.90 in atomic percent, D represents at least one element of Sn, In, Ge, Pb, Si, Bi, Ga, Au, Ag and Cu and A represents an element other than Sb, Se, the elements represented by D and rare gases).
摘要:
Disclosed herein is an information recording medium which is composed of a substrate, underlayer, and recording film and is capable of recording information by means of depressions or pits which are formed on the recording film upon irradiation with a recording energy beam, said information recording medium being characterized in that the recording film is provided with a supporting layer on at least one side of the recording film, said supporting layer having a melting point which is lower than that of the recording film, or on that side of the recording film which is adjacent to the substrate, said supporting layer having a melting point which is higher than that of the recording film. Owing to these features, the information recording medium gives recording pits having a smaller rim inner diameter, so that it achieves a high recording power margin for high-density recording.
摘要:
An electron beam memory system in which a phase transition type recording film is used as an information recording medium, and for recording information, a focused electron beam is selectively projected on desired positions of the recording film so as to locally heat the recording film and cause phase transition, while for retrieving information, an electron beam having energy at a degree not causing the phase transition is projected so as to utilize the fact that reflection or diffraction of the primary electron beam projected at the retrieval differs between the recorded regions and unrecorded regions.