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JP3201612B2 |
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JP3202746B2 |
The operating latitude of the tri-level xerographic process is improved by replacing the standard DC bias that is applied to one or both of the developer housings in conventional tri-level imaging with a chopped DC (CDC) developer bias. ...
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JP3201613B2 |
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JP2001228701A |
To provide a stable good-quality developing roller without causing the surface staining of an OPC by optimally setting the composition of the surface structure of the developing roller and carrier so that the occurrence of reversely elec...
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JP2001228706A |
To prevent toner from being stuck to a developing sleeve and hindering development even in the case of using toner for low-temperature fixing.In this reversal developing system developing device 4, the layer pressure of two-component dev...
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JP2001225439A |
To realize the repetition of an image formation by a simple constitution and provide a good quality image through the reduction and prevention of fogging by a method wherein a photoisomerizable material is applied to a printing plate as ...
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JP3200061B2 |
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JP3200325B2 |
PURPOSE: To make a toner layer on a surface of a developing roller evenly thin layer, and to prevent a generation of fogging, by forming a recessed part for developer to enter on a surface of the developer carrier, and composing so that ...
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JP3200445B2 |
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JP2001215692A |
To provide a master plate for planographic printing plate excellent in image reproducibility such as dot and thin line reproducibility and printing resistance and capable of attaining writing with an IR laser which suppresses stain and w...
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JP2001215767A |
To constitute an oilless full color fixing system realizing quick start in a color image forming device.By using toner (t) including wax in binder and having an MI value within 0.5g to 100 g and a film type fixing member 10 provided with...
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JP2001201887A |
To provide an electrostatic charge image developing toner superior in low-temperature fixability, OHP transmittance and resistance offsetting property, without having to substantially apply oil in heat roll fixation and capable of formin...
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JP3190275B2 |
To form or erase a printing image part on erasable printing plate. A printing plate 1 is charged overall. Further, the whole surface of the printing plate is covered with particles 2 charged with electric charge opposite to the electric ...
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JP3191074B2 |
PURPOSE: To provide an one-component developer to produce an image which is always high in image density and quality for a long term in various environments, in a system where a latent image on a latent image carrier is developed and tra...
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JP2001194893A |
To provide an image forming method by which an image defect such as the omission of the trailing edge or the void of a solid image is restrained, excellent developing performance in a developing area is maintained, furthermore restrainin...
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JP3189421B2 |
PURPOSE: To reduce generation of ozone and to make maintenance unnecessary by allowing a semi-conductive discharge auxiliary member having an area where the distance from the body to be electrified is gradually reduced to abut on the bod...
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JP3187582B2 |
PURPOSE: To improve and stabilize conductivity of a developer so that a photosensitive body can be stably and efficiently electrified for a long time in an image forming method of back exposure recording system, and to obtain a longer li...
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JP3185417B2 |
PURPOSE: To provide a recording device for recording color data on a recording medium with the use of different color toners, which can prevent the color data from having uneven density and prevent occurrence of blurring. CONSTITUTION: I...
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JP3185384B2 |
PURPOSE: To obtain an image forming method capable of preventing or suppressing the generation of the void of an image at the time of transferring toner images to a transfer material by a bias roll transfer method. CONSTITUTION: The imag...
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JP3184654B2 |
PURPOSE: To prevent the drop-out of image lines, thinning fine image lines and splashing by using a developer contg. metal oxide powder and specifying the duty ratio of the AC bias to be impressed to a developing means. CONSTITUTION: The...
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JP3180967B2 |
PURPOSE: To transfer a toner image to the material to be transferred perfectly without generating the color dislocation of a color image and the lowering of image quality to be caused by transference, and use a photoreceptor repeatedly. ...
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JP2001175038A |
To provide the applying method of clear toner which can be more inexpensively executed at higher speed than a conventional method and by which a high-quality image can be formed.A printing system using a re-electrifying system, an exposu...
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JP2001166544A |
To provide a charge device for a plate making machine which accurately copes with plural kinds of master sheets having different photosensitive characteristic and for which an inexpensive special variable high voltage power source or plu...
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JP2001166620A |
To provide an image forming device capable of obtaining an image high in image quality, that is, good in color ballance, high in glossiness and excellent in toner transparency.The image forming device is provided with an intermediate tra...
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JP3175160B2 |
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JP2001154432A |
To extend the allowable range of the variation of the sensitivity of a photoreceptor drum used for an image forming device by an electrophotographic process, to improve the yield of the photoreceptor drum being the parts and to reduce th...
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JP2001150828A |
To provide a method for on-site preparation of a thermal press plate having no problem of storage lifetime and durability by incorporating higher performance than that of a precoating plate.The method for on-site preparation of the press...
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JP3173321B2 |
PURPOSE: To prevent the increase in fogging with an increase in the number of printing sheets by the effect of a drop-out preventive agent and to obtain stable image quality by adding this drop-out preventive agent into toners of an init...
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JP3173736B2 |
PURPOSE: To provide an electrostatic latent image developing toner having a high development flying ratio and good image sharpness when used in DC bias non-contact development and capable of providing an image of high density and high qu...
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JP3171300B2 |
PURPOSE: To easily control the induction point and γ in the digital type image processing and obtain a high-resolution image for various processes by setting the ratio between the electric capacity of a charge generating layer and the e...
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JP2001142248A |
To provide toner by which local detective transfer such as vermin, the deterioration of image density and the fogging of the toner to a non-image part caused at the time of transfer are prevented and an image forming method using an inte...
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JP3168385B2 |
PURPOSE: To obtain a copied image with high resolution and excellent durability by using developer excellent in fixing ability at low temperature and thermal preservation stability. CONSTITUTION: In this image forming method, the one-com...
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JP3167060B2 |
PURPOSE: To stably obtain high-density images even without fogging even if toners of fine particles are used by specifying the rotating circumferential speed of a developing roll relative to a photosensitive body and the AC voltage to be...
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JP3166207B2 |
PURPOSE: To prevent image developing particles from being transferred to a non-image part, to form a high-density distinct image, and to restrain the unnecessary consumption of the image developing particles. CONSTITUTION: In an electros...
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JP3166864B2 |
2.1. It is known that latent electrostatic images can be developed with toner particles which are dispersed in insulating or nonpolar liquids. Such toner particles normally contain dye, such as pigments, which has been ground along with ...
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JP3164717B2 |
PURPOSE: To enable an image to be formed by low surface electrostatic charged potential and low developing bias potential by using specified developer and executing developing by impressing a higher developing bias voltage than the poten...
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JP3163097B2 |
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JP3163096B2 |
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JP2001117279A |
To provide a method of forming an image having high and uniform gloss in a picture part and in a nonpicture part, high coloring power, high picture quality and excellent storage property and producing no cracks by bending or environmenta...
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JP2001117282A |
To obtain an image showing stable electrification characteristics, excellent tone of the image and enough image density without causing a problem of toner scattering. A full-color developer having the following components is used. A poly...
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JP2001117257A |
To provide an image forming method by which image blurring and streaky and spotty image defects are not caused and a stable image free from a change due to an environmental change is formed over a long period of time as an image forming ...
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JP2001117394A |
To provide an image forming method which can maintain a good image free of image defects without the occurrence of a document offset even when the toner image is preserved at a high temperature for a long period of time. This image formi...
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JP3160284B2 |
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JP3160283B2 |
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JP3161565B2 |
PURPOSE: To provide an electrophotographic photoreceptor having high sensitivity and high durability showing little decrease in photoreceptivity even for repeated use and to provide a master printing plate for electrophotographic plate m...
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JP3158532B2 |
PURPOSE: To easily remove contamination by fine powder which adheres to a contact type electrostatic charging device without causing a failure such as the lowering of the electrostatic charging amount of the surface of an electrostatic l...
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JP2001109230A |
To stably obtain excellent electrifying performance and an excellent image by preventing the unevenness of the supply of electrification accelerating particles to an electrifying nip part in accordance with an image pattern and supplying...
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JP2001109180A |
To provide an electrophotographic photoreceptor which can operate both in positive polarity and negative polarity and which has high charge transfer ability, excellent mechanical strength, high performance and long life, and to provide a...
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JP2001105221A |
To properly process the end surfaces of printing plates having different widths. An edge processing part 24 is separated from a chamfering unit 90 installed in a base plate 76 by extending a rod 84A of an air cylinder 84 so as to move a ...
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JP3155933B2 |
To provide a light-transmitting recording material for electrophotography and a thermal fixing method to obtain a color transparent sheet having excellent environmental stability, good reproducibility of tones, excellent transparency and...
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