摘要:
An ink supply roll is disposed inside a printing drum of a stencil printer and supplies ink to the inner peripheral surface of the printing drum. At least the surface layer of the ink supply roll is formed of a nonmetal material which is not larger than 100° in contact angle and not larger than ±5% in swelling ratio to an ultraviolet-curing monomer.
摘要:
A stencil printing machine is provided with a paper feed section feeding a print sheet, which is allowed to have paper dusts thereon, in a paper feed path, and a print section to which the print sheet is transferred, and including a printing drum carrying thereon a stencil sheet having a perforated image area formed on the basis of image data and a rotary printing press member located in close proximity to an outer circumferential periphery of the printing drum to impart printing pressure thereto to allow the print sheet to be transferred in press contact between the printing drum and the rotary printing press member such that printing ink is transferred onto the print sheet to generate a desired image thereon through the perforated image area. There is further provided that a liquid applying mechanism applying liquid, which is permeable to the paper dusts, onto a print surface of the print sheet to allow the paper dusts to be permeated with the liquid at an upper stream position than a position where the printing drum and the rotary printing press member are in press contact with each other in the paper feed path. A liquid applying mechanism may firstly apply the liquid onto the stencil sheet from which the liquid is transferred to a print surface of the print sheet.
摘要:
Compounds represented by the following formula (I) and pharmaceutically acceptable salts thereof are disclosed. The compounds have progesterone receptor binding inhibitory activity and, hence, can be used as therapeutic and prophylactic agents for progesterone-related diseases. Specifically, they are useful as abortifacients, oral contraceptive pills, carcinostatic agents for breast cancer and ovarian cancer, therapeutic agents for endometriosis, meningioma, and myeloma, and therapeutic and prophylactic agents for osteoporosis and climacteric disturbance. wherein R1 and R2 represent a hydroxyl group, alkyloxy, alkenyloxy, alkynyloxy, cycloalkyloxy, alkoxyalkyloxy, cycloalkyloxy containig one oxygen atom, aralkyloxy, alkylcarbonyloxy, alkenylcarbonyloxy, alkynylcarbonyloxy, cycloalkylcarbonyloxy, alkoxycarbonyloxy, aryloxy carbonyloxy, aralkylcarbonyloxy, aromatic acyloxy, heteroaromatic acyloxy, saturated heterocyclic carbonyloxy, alkylsulfonyloxy, aromatic sulfonyloxy, alkylcarbamoyloxy, aromatic carbamoyloxy, alkylcarbonylamino, or aromatic acylamino, provided that R1 may further represent a hydrogen atom, alkyl, alkenyl, or alkynyl; and R3, R4, and R5 each independently represent a hydrogen atom, alkyl or alkenyl.
摘要:
A process for the preparation of pyrazolone derivatives represented by the general formula ##STR1## wherein R is a hydrogen atom, an alkyl group, an allyl group, an aryl group or an aralkyl group, and R.sub.1 and R.sub.2 are, respectively, a hydrogen atom, an alkyl group or a phenyl group which may have a substituent, comprising reacting a 2,3-dihalocarboxylic acid derivative or a 2-haloacrylic acid derivative with a hydrazine derivative. A pyrazolone or 1-substituted-3-pyrazolones useful as intermediate starting materials for the synthesis of agricultural chemicals, medicine and chemical compounds can be easily and cheaply prepared from widely used industrial starting materials.
摘要:
An ink transfer medium for toner is disclosed, comprising the following layers, in this order: a heat-generating resistive layer heated by input of electrical signal, a conductive layer, and an ink release layer having a toner layer on it, an adhesion from 0.2 g/mm to 40 g/mm as measured by the 90.degree. peeling off method and consisting of a viscoelastomer having a critical surface tension of 35 dyne/cm or less. It can be re-inked by attaching toner to the portions of the ink transfer medium from which the ink has been removed, using toner held in a toner holding means.An ink transfer process for toner is also disclosed, wherein an ink transfer medium having toner layer formed on the above described ink release layer is used and the toner layer contacts the recording medium under pressure, while a recording head contacts the anisotropic conductive layer of the ink transfer medium, so that an electrical signal is input and then toner fused by heat generated by the heat-generating resistive layer is transferred to the recording medium.
摘要:
A process for producing a heat-sensitive stencil sheet (7) is disclosed, which makes it possible to readily form a porous substrate layer having a uniform and dense fiber dispersion on a thermoplastic resin film (3). The process is characterized by electrostatically flocking staple fibers (5) of 0.1-3 denier on a thermoplastic resin film (3) coated with a binder and by thermally compressing them (14) to form a porous substrate layer on the film. Since the porous substrate layer, having a good fiber dispersion, can be formed directly on the film by the electrostatic flocking process, it is possible to make the production process shorter, reduce the production cost and to improve the visual quality of the printed matter.
摘要:
Provided are N-(9-fluorenylmethoxycarbonyl)-4-substituted proline derivatives represented by the following formula (I): ##STR1## wherein Q is O or S, R represents a particular monovalent group, and T represents H or --C(CH.sub.3).sub.3. Where T is H, the derivatives can each be prepared by reacting a corresponding electron attractive compound with N-(9-fluorenylmethoxycarbonyl)-4-hydroxyproline in the presence of a coupling reagent. The derivatives in which T stands for --(CH.sub.3).sub.3 can each be prepared by reacting the corresponding N-(9-fluorenylmethoxy-carbonyl)-4-hydroxyproline derivative with isobutylene in the presence of a catalytic amount of sulfuric acid. The staring material, N-(9-fluorenylmethoxycarbonyl)-4-hydroxyproline, can be purified by adsorbing it on anhydrous magnesium sulfate.
摘要:
A novel black toner for color digital copying machine is provided, which comprises a binder resin having dispersed therein toner particles comprising carbon black having an average primary particle diameter of 35 m.mu.m to less than 50 m.mu.m as a colorant in an amount of 2 to 6 parts. In a preferred embodiment, the average primary particle diameter and content of carbon black are determined such that there exist the following relationships (1) and (2) between the image density (ID) of an image developed with toner particles and the developed amount of toner (TMA) and the image density (ID) is in the range represented by the following relationship (3):ID.ltoreq.8/3(TMA)+4/5 (1)ID.gtoreq.5/3(TMA)+1/2 (2)1.2.ltoreq.ID.ltoreq.1.7 (3)wherein TMA represents the amount of toner in mg supplied per unit cm.sup.2 of photoreceptor when an electrostatic latent image corresponding to a solid image is developed; and ID represents a value determined by means of a Macbeth densitometer.
摘要:
A toner for developing an electrostatic charge image is disclosed, which is formed by adding and mixing an external additive with toner particles having an average particle size of not larger than 9 .mu.m and comprising at least a colorant and a binder resin, wherein the external additive is fine particles having a particle size of 20 to 80 nm. There is also disclosed a process for preparing the toner which comprises adding external additives to the toner particles and mixing them, wherein the addition and mixing of said external additive are carried out under specific conditions.
摘要:
A method for fixing a full color toner image by inserting a transfer medium to which a toner image is transferred, between a pair of rolls of a fixing apparatus, and pressing the medium therebetween, wherein the toner image is formed of a full color toner prepared by dispersing a colorant into a polyester resin containing a diol component represented by the following general formula (I) as a constituent and having a softening point of 100.degree. to 120.degree. C., as measured by a ring and ball method, a glass transition temperature of 55.degree. C. or more, a Gardner color scale of 2 or less and a haze value of 15 or less, and the fixing operation is conducted while supplying a functional group-containing organopolysiloxane having a viscosity of 10 to 100,000 cs at 25.degree. C. to a roll in contact with the toner image, whereby the full color toner image can be stably fixed without wrapping of the transfer medium around the roll and offset, and the fixed image having good image quality can be obtained: ##STR1## wherein R represents an ethylene group or a propylene group, each of x and y is an integer of 1 or more, and x+y is 2 to 6.