摘要:
An electrophotographic photoreceptor includes a conductive support; a photosensitive layer; and a surface protective layer as an outermost layer of the electrophotographic photoreceptor, wherein the electrophotographic photoreceptor satisfies following formulas (a) and (b): 3.6≦(A+B)/C×100≦6 (a) B≦0.3 (b) wherein A (μm) represents a ten-point-averaged surface roughness RZJIS94 of the conductive support, B (μm) represents a ten-point-averaged surface roughness RZJIS94 of the surface protective layer, and C (%) represents a reflectivity of the surface protective layer against the conductive support.
摘要:
An electrophotographic photoreceptor includes a conductive support; a photosensitive layer; and a surface protective layer as an outermost layer of the electrophotographic photoreceptor, wherein the electrophotographic photoreceptor satisfies following formulas (a) and (b): 3.6≦(A+B)/C×100≦6 (a) B≦0.3 (b) wherein A (μm) represents a ten-point-averaged surface roughness RZJIS94 of the conductive support, B (μm) represents a ten-point-averaged surface roughness RZJIS94 of the surface protective layer, and C (%) represents a reflectivity of the surface protective layer against the conductive support.
摘要:
An electrophotographic photoreceptor includes a conductive substrate, and a photosensitive layer, an intermediate layer having a thickness of 2 nm to 70 nm, and a surface layer, which are disposed in this order on the conductive substrate. The refractive index n1 of the photosensitive layer, the refractive index n2 of the intermediate layer, and the refractive index n3 of the surface layer satisfy an inequality, n2>n3>n1.
摘要:
First to third guide members have first to third axis lines, and the first to third axis lines are arranged in parallel with each other. A first lens holder has a first lens held by a first lens holding portion with a first main sliding portion guided by sliding on the first guide member, and a first sub sliding portion guided by sliding on the third guide member. A second lens holder has a second lens held coaxially with the first lens by a second lens holding portion with a second main sliding portion guided by sliding on the second guide member, and a second sub sliding portion guided by the third guide member.
摘要:
The Invention is an image input apparatus equipped with means of image shifting which is capable of inputting images of different resolutions, and enables the transmission band of the spatial filter to be switched in accordance with resolution in order to prevent moire. When a flat transparent refraction plate 22 is inclined relative to the optical axis 10 by which light from the object is introduced, the position where the image is formed on the imaging surface of the CCD 14 is shifted, thus making image shifting possible. High resolution images are obtained by shifting the image a distance shorter than the distance between the photosensitive parts of the CCD 14, and then combining the images. The transmission band of the spatial filter 12 for preventing moire can be switched by changing the relative angles of the double refraction plates 20, 21. The transmission band of the spatial filter 12 is switched to the high frequency side when inputting high resolution images by means of the image shift mechanism 13, thus obtaining images of good resolution.
摘要:
A novel titanyl phthalocyanine crystal, a photoconductive material comprising the same, and an electrophotographic photoreceptor using the same are disclosed. The titanyl phthalocyanine crystal has a primary particle diameter ranging from 0.03 to 0.15 .mu.m, shows a maximum X-ray diffraction peak at a Bragg angle (2.theta..+-.0.2.degree.) of 27.3.degree., has a ellipsoidal tabular form, and has a BET specific surface area of not less than 35 m.sup.2 /g. The crystal has improved crystal form stability against solvents and holds its crystal form for an extended period of time in a dispersed and coated state. An electrophotographic photoreceptor using the crystal as a photoconductive material is excellent in sensitivity, stability, and durability.
摘要:
An electrophotographic photoreceptor having a photosensitive layer essentially made of amorphous silicon formed over a support, and a surface layer made of amorphous silicon formed over the photosensitive layer. The amorphous silicon of the photosensitive layer includes boron of 0.1-5 ppm, and the amorphous silicon of the surface layer includes nitrogen. The layers of material formed over the support include a charge blocking layer.
摘要:
An electrophotographic photoreceptor having excellent dark resistance is disclosed, which comprises a photoconductive layer and a surface layer formed successively on a conductive substrate, wherein the photoconductive layer mainly comprises hydrogen-containing amorphous silicon, and the surface layer comprises amorphous carbon which contains not more than 50 atomic percent of hydrogen. The surface layer contains phosphorous or boron as a dopant and/or comprises two sublayers where the sublayer has a lower hydrogen content than the lower sublayer.
摘要:
A lens unit and a lens driving apparatus are provided. First to third guide members have first to third axis lines, and the first to third axis lines are arranged in parallel with each other. A first lens holder has a first lens held by a first lens holding portion with a first main sliding portion guided by sliding on the first guide member, and a first sub sliding portion guided by sliding on the third guide member. A second lens holder has a second lens held coaxially with the first lens by a second lens holding portion with a second main sliding portion guided by sliding on the second guide member, and a second sub sliding portion guided by the third guide member.
摘要:
A lens unit having a first lens (2) whose optical surface on the imaging surface side is made of resin (32), a first lens holder (3) for holding the first lens (2), a second lens (6) placed to the imaging side of and spaced in the optical axis direction from the first lens (2), and a second lens holder (4) for holding the second lens (6). The first lens (2) and the second lens (6) are movable relative to each other. A second lens holder recess (8) which a resin projection (33) of the first lens (2) can enter and exit from is formed in the second lens holder (4).