摘要:
An image-forming apparatus including an electrophotographic photoreceptor of which photosensitive layer contains oxytitanium phthalocyanine showing main diffraction peaks at Bragg angles (2θ) of 9.0° and 27.2° and at least one main diffraction peak in the range of 9.3° to 9.8° to CuKα rays, and the toner satisfies all the following requirements (1) to (3): (1) the volume median diameter (Dv50) is 4.0 μm or more and 7.0 μm or less, (2) the average sphericity is 0.93 or more, and (3) the relation between the volume median diameter (Dv50) and the content (% by number: Dns) of toner particles of 2.00 μm or more and 3.56 μm or less satisfies Dns≦0.233EXP(17.3/Dv50).
摘要:
A table clock capable of changing its attitude in use.According to one embodiment of the invention, the table clock is attached with at least two pedestals which are slidably fitted on the outer periphery of the casing of the clock so that when in use, the clock can be placed on a table or desk at a desired angle of inclination according to the user's liking by moving the pedestals to desired positions, respectively.
摘要:
Three dimensional molded articles comprising liquid crystalline polyesters are recognized to be extremely difficult to finish such as by printing, painting, metallizing, plating, etc. An effective answer to this difficulty is provided by initially blending within the liquid crystalline polyester at least one particulate inorganic filler selected from the group consisting of Group II elements of the periodic table and oxides, sulfates, phosphates, silicates, and carbonates thereof, and elements of aluminum, silicon, tin, lead, antimony, and bismuth and oxides thereof, in an amount of 5 to 80 percent by weight; forming a molded article from the same; and contacting the resulting molded article with an acidic solution containing at least 80 percent by weight of sulfuric acid. The requisite surface modification for finishing to form a quality product is made possible.
摘要:
A liquid crystal polyester composition having an improved resistance to deformation comprising 99.5 to 30 percent by weight of a polyester which is melt-processable and capable of forming an anisotropic phase in the melt state and 0.5 to 7 percent by weight of filler particles.
摘要:
Provided is an excellent phthalocyanine crystal having high sensitivity and little fluctuation in sensitivity for a humidity change in a use environment and applicable to the martial for solar battery, electronic paper, electrophotographic photoreceptor, etc. Namely, phthalocyanine crystal obtained by bringing a phthalocyanine crystal precursor into contact with an aromatic aldehyde compound to convert the crystal form. Also, provided is an electrophotographic photoreceptor that not only exhibits high sensitivity but also has little fluctuation in sensitivity for a humidity change in a use environment. Further, provided is an electrophotographic photoreceptor cartridge and an image-forming device, both of which can produce a stable quality images for a humidity change in a use environment by using the electrophotographic photoreceptor.