摘要:
Method of a liquid process type electrophotographic apparatus forming a multicolor visible image on a surface of a photosensitive drum, which prevents the visible image after the second color from being disturbed. After a visible image of the first color has been formed with a development unit on a surface of a photosensitive drum, a part of liquid carrier existing on the surface of the photosensitive drum is removed by using a squeeze roller and an air blower. When an electrostatic latent image is formed with a charger 1 and an exposing unit on the photosensitive drum where the visible image of the first color has been formed, disturbance of the electrostatic latent image caused by a large amount of liquid carrier or lack of liquid carrier can be reduced by reserving a predetermined very small amount of liquid carrier, and disturbance of a visible image of the second color to be developed by a development unit can be reduced.
摘要:
This invention is to provide an electrophotographic photosensitive body used in a wet electrophotographic apparatus and including a substrate having a conductive surface, and a photosensitive layer formed on the conductive surface of the substrate and changing in a charged state upon being irradiated with light, the photosensitive layer having, on an exposed surface, C—F bonds and C—H bonds for which the ratio of the number NCF of C—F bonds to the number NCH of C—H bonds satisfies, on the exposed surface of the photosensitive layer, a relationship represented by 2/100
摘要:
An image forming apparatus with high release characteristic of a toner image, which can acquire a good imprint for a long time, is provided. In the image forming apparatus using the liquid development method, by giving release agent under the visible image formed by the liquid development, which forms release layer on latent image support before development, and is, the image forming apparatus with high release characteristic of a toner image, which can acquire good transfer characteristic for a long time, is realized.
摘要:
This invention provides an electrophotographic photosensitive body including a photosensitive layer containing a chemical substance selected from a compound having a polysilazane skeleton, a compound having an Si—CnH2n+1 bond and one of an Si—N bond and an Si—C—N bond, a compound having an Si—CnF2n+1 bond and one of an Si—N bond and an Si—C—N bond, and a mixture of a compound having one of an Si—N bond and an Si—C—N bond and a compound having a C—F bond, an intermediate transfer medium including a surface layer containing the chemical substance, and an electrophotographic apparatus using the same.
摘要:
In the ink jet recording apparatus for recording an image by supplying ink obtained by dispersing color material components in a solvent to a head substrate and by jetting ink drops containing at least the color material components to a recording medium on the basis of electrostatic force applied to the color material components, the recording apparatus comprises a driving circuit (107) for applying voltages to electrodes of an electrode array (102) arranged on a head substrate (101), in such a way that a first potential difference whose potential level relationship is reversed at a predetermined period between the two adjacent electrodes can be applied when the color material components are cohered and/or stirred on the head substrate, and a second potential difference different from the first potential difference between the two adjacent electrodes can be applied when the ink drops are jetted toward a recording medium. In this ink jet recording apparatus, a stable recording can be made by uniformalizing the density of the ink color material components on the head substrate and further by preventing the color material components from adhering onto the electrode.
摘要:
A multimer peptide from a snake venom has an activity to inhibit binding between von Willebrand factor and platelets. The multimer peptide is used to obtain a single strand peptide which does not substantially cause decrease in platelets at a minimum dose for exhibiting the activity in vivo. The single strand peptide is obtained by allowing the multimer peptide to exist together with a protein-denaturing agent, and glutathione and/or cysteine, and thereby disconnecting disulfide bonds between peptide chains for constituting the multimer peptide while substantially preserving disulfide bonds within the peptide chains. Alternatively, the single strand peptide, a mutant thereof, or a part thereof is produced by genetic engineering techniques by using genes coding for them.
摘要:
A device for optically detecting a chemical change of fluid comprises a prism placed in fluid to be tested and a layer of color indication material formed on a surface of the prism to thereby detect a chemical change of fluid by means of a transmitted light and a reflected light in the prism.
摘要:
A coumarin dye of the formula (Ia), ##SPC1##Wherein R.sub.1 is hydrogen, chlorine or C.sub.1 -C.sub.2 alkyl, R.sub.2 and R.sub.3 are hydrogen or C.sub.1 -C.sub.4 alkyl, or a quarternary salt thereof having the formula (Ib), ##SPC2##Wherein R.sub.1, R.sub.2 and R.sub.3 are as defined above, R.sub.4 is C.sub.1 -C.sub.2 alkyl or benzyl, and X.sup.- is an anion, is prepared by an improved method, which comprises reacting a diamine of the formula, ##SPC3##Wherein R.sub.1 is as defined above, with a compound of the formula,X -- CH.sub.2 -- Ywherein X and Y are the same or different and are carboxyl, carbamoyl, alkoxycarbonyl or cyano, in 10 to 70 % sulfuric acid to prepare an imidazolyl acetic acid of the formula, ##SPC4##Wherein R.sub.1 is as defined above, and then reacting the imidazolyl acetic acid with a compound of the formula, ##SPC5##Wherein R.sub.2 and R.sub.3 are as defined above, to obtain the dye (Ia), or further reacting the resulting dye (Ia) with an alkylating agent to obtain the dye (Ib).
摘要:
An infrared solid state imaging device includes an infrared detection element unit having heat sensitive pixels, an AD conversion unit which conducts analog-to-digital conversion on an infrared image signal obtained by the infrared detection element unit, and a digital signal processing unit which converts the image signal converted to a digital signal. The digital signal processing unit stores an image value produced from the digital signal, and acquired in a frame immediately preceding a current frame, subtracts an image value obtained by multiplying the image value acquired in the frame immediately preceding the current frame by a predetermined constant α in a range of 0 to 1, from an image value acquired in the current frame, and conducts processing of multiplying a resultant image value obtained by the subtraction by 1/(1−α) so that an infrared image with less afterimage is provided.
摘要:
An image forming apparatus includes: a latent image bearing member; an exposure head having an imaging optical system and N light-emitting elements (where N is an integer) disposed in a first direction that emit light forming an image upon the latent image bearing member through the imaging optical system; an FM screen whose unit of processing is M in the first direction, M being greater than N; and a controller that performs a screening process on image data using the FM screen.