36results about How to "Excellent sensitivity characteristics" patented technology

The present invention provides a triphenylamine derivative having excellent solubilization of a solvent and capable of dissolving with binding resin and improving effectively light sensitivity when the triphenylamine derivative is used as a hole transport agent of electronic photographic photoreceptor, a method for manufacturing the triphenylamine derivative and an electronic photographic photoreceptor. The invention employs triphenylamine derivative represented by formula (1) and (6).

The present invention provides a single layer type electrophotographic photoconductor which exhibits the small number of generated black spots in a formed image and exhibits the excellent sensitivity characteristic even when the photoconductor is used for a long time or a photoconductor drum is rotated at a high speed and an image display device which includes the single layer type electrophotographic photoconductor. In the single layer type electrophotographic photoconductor which includes a photoconductive layer containing a binding resin, a hole transporting agent and an charge generating agent, the photoconductor contains a water-repellant polycarbonate resin as the binding resin, and a contact angle of pure water (measured temperature: 25° C.) with respect to the photoconductive layer is set to 100° or more.

The invention discloses a colored photosensitive resin composition. The colored photosensitive resin composition comprises: coloring agent (A), alkaline soluble resin (B), photo-polymerizing compound (C), photo-initiator (D),solvent (E) and additive agent (F), wherein the photo-initiator (D) is a compound represented by the chemical formula (1), and the additive agent (F) is a compound represented by the chemical formula (3), wherein, in the chemical formula (1), R1 is represented by the chemical formula (2), R2 is C1-C8 alkyl group, substituted phenyl group or unsubstituted phenyl group, or substituted benzyl group or unsubstituted benzyl group, R3 is substituted diphenyl sulfide group or unsubstituted diphenyl sulfide group, and in the chemical formula (2), R4 is C1-C4 alkyl group, and R5 is C3-C8 alicyclic alkyl group or aromatic alkyl group, and in the chemical formula (3), n is an integer from 1 to 12, the chemical formula (2) -R4-R5.

Voltage signals outputted from a CCD are subjected to correlated double sampling processing by a correlated double sampling circuit (CDS), after which digital gain processing is carried out at a gain control amplifier (GCA). A gain difference between G color signals and R/B color signals outputted from the CCD is caused by a difference between a G exposure duration t_G and an R/B exposure duration t_R/B. When the value of a ratio between the t_G and the t_R/B falls below a predetermined value, the GCA applies digital gain for compensating for the gain difference by multiplying respective signal values of R, G and B by gain correction coefficients as follows: (gain compensation coefficient α)=(G exposure duration t_G)/(R/B exposure duration t_R/B)=(G exposure duration t_G)/((G exposure duration t_G)+(exposure duration difference Δt)).

A solid-state imaging device is provided, which comprises unit pixel portions. Each unit pixel portion comprises a first conductivity type substrate, a second conductivity type semiconductor layer, a first conductivity type well region, a light receiving region for generating electric charges when irradiated with light, an electric charge accumulation region for accumulating the electric charges from the light receiving region, and a transistor capable of reading out a signal corresponding to an amount of the electric charges accumulated in the electric charge accumulation region. A surface of the light receiving region is covered with an insulating film made of the same material as that of a gate insulating film of the transistor.

The invention realizes an electrophotography photosenor having excellent photosensitivity, and an image forming device having the photosenor. The electrophotography photosenor of the invention includes a photosensitive layer containing bonding resin, electron transport agent and charge generating agent, and characterized in that: the electron transport agent contains derivatives of tetrabasic naphthalene diimide represented by the formula 1.

An electrophotographic photoconductor having an excellent crack resistance and wear resistance as well as excellent sensitivity characteristics, while keeping good image characteristics of the photoconductor is provided. In addition, an image-forming apparatus equipped with such an electrophotographic photoconductor is also provided. The electrophotographic photoconductor includes a photosensitive layer containing at least a charge-generating agent, a hole-transfer agent, and a binder resin on a conductive substrate. The hole-transfer agent has a solubility of 5 to 35% by weight with respect to triglyceride oleate and the photosensitive layer contains a compound represented by the following general formula (1) as an additive:

Provided are an electrophotographic photoconductor for wet developing excellent in solvent resistance having a photoconductor improved in not only solvent resistance but also charging characteristics even after long-term usage, and an image-forming apparatus equipped with such an electrophotographic photoconductor for wet developing.

Therefore, an electrophotographic photoconductor for wet developing equipped with an organic photoconductor containing at least a binder resin, a charge-generating agent, a hole-transfer agent and an electron-transfer agent, where the amount of elution of the hole-transfer agent after 2,000-hour-immersion in paraffin solvent having a kinematic viscosity (25° C., in accordance with ASTM D455) of 1.4 to 1.8 mm²/s is 0.040 g/m² or less or the amount of elution of the electron-transfer agent after 2,000-hour-immersion in paraffin solvent having a kinematic viscosity (25° C., in accordance with ASTM D455) of 1.4 to 1.8 mm²/S is 0.12 g/m²2 or less.

A condenser microphone includes: a casing including a sound hole; a vibration film disposed in the casing so as to face the sound hole; a back plate disposed opposed to the vibration film; a spacer disposed between the vibration film and the back plate; and a hold member including a spring member. The back plate has an outer peripheral shape that is smaller than an inner peripheral shape of the casing so as to provide a clearance between an outer peripheral surface of the back plate and an inner peripheral surface of the casing. The back plate is held by the hold member from an opposite side of the vibration fills.

The invention provides an electronic picture photoreceptor and an image forming device; a conductive substrate of the electronic picture photoreceptor is provided with a laminated photosensitive layer with at least laminated an electric charge generation layer and an electric charge convey layer, or is provided with a single layer photosensitive layer at least containing an electric charge generation material and an electric charge convey material; imino group quinone ramification with a specific structure is employed as the electronic convey material. According to the invention, the electronic picture photoreceptor with high photoreceptor is provided; furthermore, the image forming device can provide the electronic picture photoreceptor to serve as an image bearer, so excellent images can be provided.

A thin film photoelectric conversion device for performing photoelectric conversion of a wide range of light, from the visible range to the infrared range, is provided. A plasmon resonance phenomenon, which enhances a photo-induced electric field, is caused in a wide range of light, by a metal nanostructure which is formed by annealing a substrate on which a first metal thin film layer composed of a first metal and a second metal thin film layer composed of a second metal which is partially overlapped onto the first metal thin film layer are laminated, and in which a periodic structure, wherein a number of first convex parts successively lie with a pitch of from one-tenth of a wavelength of an incident light to a wavelength equal to or shorter than the wavelength of the incident light in a planar direction along the substrate, is formed on the surface of the substrate; and a random structure, wherein a distance between any pair of a number of second convex parts formed at random positions on the substrate, or a distance between a second convex part and a first convex part is shorter than 100 nm, is formed on the substrate in a position within a region of the periodic structure or in a position adjacent to the region of the periodic structure, and as a result, high sensitivity photo-induced current is generated.

A gyro sensor according to the invention includes a driving portion that includes a driving support portion connected to a driving spring portion and a detecting portion that includes a detecting support portion connected to the driving support portion with the detecting spring portion interposed. The driving support portion is configured to vibrate in a first axis (X-axis) direction, and the detecting support portion is configured to be displaced in a second axis (Y-axis) direction orthogonal to the first axis (x-axis). When the resonant frequency of the driving portion is f₁, the resonant frequency of the detecting portion is f₂, the width of the driving spring portion is w₁, and the width of the detecting spring portion is w₂, Expression (1) below is satisfied.

0.87(f₂/f₁)≦(w₂/w₁)≦1.13(f₂/f₁)  (1)

• • (where, w₁≠w₂ and f₁≠f₂).

An electrophotographic photoreceptor having sufficient solvent resistance and crack resistance in a liquid developer and having excellent electrical characteristics, a process for producing the photoreceptor, and an electrophotographic device are provided at low cost. The electrophotographic photoreceptor includes a conductive base; and a charge generation layer and a charge transport layer sequentially provided on the conductive base. The charge transport layer contains a binder resin that is a copolycarbonate resin having a structure represented by general formula (1) below:

and a hole transport material that is a compound having a structure represented by general formula (2) below:

The invention relates to an image reading apparatus having an aberration correction function, which can correct color migration generated by a chromatic aberration and distortion aberration caused by an optical element through a digital filter in only one direction in a condition without using a switch for switching. An aberration correction unit has a digital filter group, a delay control unit, and a memory. The digital filter group take one of multiple colored lights controlled through a delay time caused of the aberration of the optical element of each read image of a line image sensor as a benchmark colored light and the rest colored lights are treated as other colored lights, and are disposed on the rest colored lights. The delay control unit, based on a calculation value of each delay amount between formed images of the benchmark colored light and other colored lights, controls a filter coefficient of the digital filter group. The delay control unit, when a picture transverse width of other colored lights gets wider with respect to a picture transverse width of the benchmark colored light, in a state of reading image positions of scanning finishing ends of the bench colored light and other colored lights, begins to read, from scanning beginning end formed images of the other colored lights, the calculation value of each delay amount which takes a scanning beginning end formed image of the benchmark colored light as a benchmark, controls the filter coefficient of the digital filter group, and thus the color migration generated by the aberration of the optical element can be corrected.