Abstract: A photosensitive resin composition comprising an alkali-soluble resin (A), a compound (B) containing a 1,2-quinonediazide group, and a compound (C) of the following formula (I): ##STR1## wherein each of Ar.sup.1 to Ar.sup.3 which are independent of one another, is an aromatic hydrocarbon group which may be substituted by a halogen atom, a C.sub.1-4 alkyl group or a C.sub.1-4 alkoxy group, and R is a hydrogen atom, a hydroxyl group, a C.sub.1-4 alkyl group or a C.sub.1-4 alkoxy group.

Abstract: A photosensitive resin composition comprising an alkali-soluble resin, a quinonediazide-type photosensitive compound and a solvent, wherein the photosensitive compound comprises 1 a quinonediazide sulfonate of a novolak resin (A) of the following formula (i) having a weight average molecular weight of from 600 to 2,200 or a novolak resin (B) of the following formula (ii) having a weight average molecular weight of from 600 to 2,200, and 2 a quinonediazide sulfonate of a hydroxybenzophenone (C) of the following formula (iii): ##STR1## wherein each of R.sup.1 and R.sup.4 is an alkyl group, R.sup.2 is an alkyl group or an aryl group, R.sup.3 is a hydrogen atom or an alkyl group, each of u and v is an integer of from 0 to 3, provided that when each of R.sup.1 to R.sup.4 is present in a plurality, the plurality of each of R.sup.1 to R.sup.4 may be the same or different, and each of k and l is a number of at least 0, provided that k:l=1:9 to 10:0; ##STR2## wherein R.sup.

Abstract: A photosensitive resin composition comprising an alkali-soluble resin, a quinonediazide type photosensitive compound and a solvent, in which the quinonediazide type photosensitive compound contains a quinonediazide sulfonic acid ester of a polycondensate (d) of at least one phenolic compound (a) of the formula (A) with at least one hydroxy aromatic aldehydes (b) of the formula (B) and at least one carbonyl compounds (c) of the formula (C), and the mixing ratio ((b)/(c) mol ratio) of the hydroxy aromatic aldehydes (b)/the carbonyl compounds (c) is from 1/99 to 99/1, and the polycondensate (d) has a weight average molecular weight of from 600 to 2,000 in terms of polystyrene calculation: ##STR1## (wherein R.sup.1 is an alkyl group having a carbon number of from 1 to 4, an alkoxy group having a carbon number of from 1 to 4 or a hydroxyl group, R.sup.2 is an alkyl group having a carbon number of from 1 to 4 or an alkoxy group having a carbon number of from 1 to 4, R.sup.3 and R.sup.

Abstract: A photosensitive resin composition comprising an alkali-soluble resin, a quinonediazide-type photosensitive compound and a solvent, wherein the alkali-soluble resin is a polycondensation product of 1 at least one phenolic compound (A) of the following formula (A) with 2 formaldehyde (a) and at least one carbonyl compound (b) of the following formula (B), in which the mixing ratio of the formaldehyde (a) to the carbonyl compound (b) is within a range of from 1/99 to 99/1 in terms of the molar ratio of (a)/(b), and the alkaline soluble resin has partial structures of the following formula (C), in which the weight ratio of repeating units (.beta.) wherein m is from 1 to 5, to repeating units (.alpha.) wherein m is 0, i.e. the weight ratio of (.beta.)/(.alpha.), is at most 0.25: ##STR1## wherein R.sup.1 is a group of the formula R.sup.2, OR.sup.3, COOR.sup.4 or CH.sub.2 COOR.sup.5, wherein R.sup.2 is a C.sub.1-4 alkyl group, each of R.sup.3, R.sup.4 and R.sup.

Abstract: A photosensitive resin composition comprising an alkali-soluble resin, a quinonediazide-type photosensitive compound and a solvent, as the main components, wherein the alkali-soluble resin is a polycondensation product of 1 at least one phenolic compound of the following formula (A) and 2 (a) formaldehyde and (b) at least one ketone or aldehyde of the following formula (B), and the mixing ratio of the formaldehyde (a) to the ketone or aldehyde (b) is within a range of from 1/99 to 99/1 in terms of the molar ratio of (a)/(b): ##STR1## wherein R.sup.1 is a group of the formula R.sup.2,OR.sup.3,COOR.sup.4 or CH.sub.2 COOR.sup.5,wherein R.sup.2 is a C.sub.1-4 alkyl group, each of R.sup.3,R.sup.4 and R.sup.5 which are independent of one another, is a hydrogen atom or a C.sub.1-4 alkyl group, n is an integer of from 0 to 3, provided that when n is 2 or 3, a plurality of R.sup.1 may be the same or different, and each of R.sup.6 and R.sup.7 which are independent of each other, is a hydrogen atom, a C.sub.

Abstract: A bandsaw machine which has a sawhead assembly in which a flexible endless bandsaw blade is trained around a pair of bandsaw blade wheels to cut a workpiece, with the blade being guided by a guide arm, includes a guide member on the guide arm, for holding the bandsaw blade in a vertical orientation by pushing the bandsaw blade from both sides. A rolling member is mounted on the sawhead assembly and is free to push a side surface of the bandsaw blade with a predetermined force so as to prevent vibration of the blade.

Abstract: A photosensitive resin composition comprising an alkali-soluble resin, a quinonediazide-type photosensitive compound and a solvent, as the main components, wherein the alkali-soluble resin is a polycondensation product of 1 at least one phenolic compound of the following formula (A) and 2 (a) formaldehyde and (b) at least one ketone or aldehyde of the following formula (B), and the mixing ratio of the formaldehyde (a) to the ketone or aldehyde (b) is within a range of from 1/99 to 99/1 in terms of the molar ratio of (a)/(b): ##STR1## wherein R.sup.1 is a group of the formula R.sup.2, OR.sup.3, COOR.sup.4 or CH.sub.2 COOR.sup.5 wherein R.sup.2 is a C.sub.1-4 alkyl group, each of R.sup.3, R.sup.4 and R.sup.5 which are independent of one another, is a hydrogen atom or a C.sub.1-4 alkyl group, n is an integer of from 0 to 3, provided that when n is 2 or 3, a plurality of R.sup.1 are the same or different, and each of R.sup.6 and R.sup.7 which are independent of each other, is a hydrogen atom, a C.sub.

Abstract: A bandsaw machine which has a sawhead assembly in which a flexible endless bandsaw blade is trained around a pair of bandsaw blade wheels to cut a workpiece, with the blade being guided by a guide arm, includes a guide member on the guide arm, for holding the bandsaw blade in a vertical orientation by pushing the bandsaw blade from both sides. A rolling member is mounted on the sawhead assembly and is free to push a side surface of the bandsaw blade with a predetermined force so as to prevent vibration of the blade.

Abstract: A photoresist composition useful for the preparation of semiconductors and to be irradiated by light with a wavelength of from 330 to 450 nm, which comprises (1) an alkali-soluble resin, (2) a quinone-diazide type photosensitive compound and (3) a solvent, wherein(a) said quinone-diazide type photosensitive compound is composed mainly of a quinone-diazide sulfonate of a novolac resin produced by polycondensation of at least one phenolic compound of the following formula (A1) or (A2) and at least one ketone or aldehyde derivative of the following formula (B),(b) the weight-average molecular weight (the analytical value calculated as polystyrene by gel permeation chromatography) of said novolac resin is from 400 to 2,000 in the case of the novolac resin derived from the phenolic compound of the formula (A1) and from 600 to 2,200 in the case of the novolac resin derived from the phenolic compound of the formula (A2), and(c) the esterification ratio of said quinone-diazide sulfonate (the number of quinone-diazide

Abstract: A bandsaw machine which has a sawhead assembly in which a flexible endless bandsaw blade is trained around a pair of bandsaw blade wheels to cut a workpiece, with the blade being guided by a guide arm, includes a guide member on the guide arm, for holding the bandsaw blade in a vertical orientation by pushing the bandsaw blade from both sides. A rolling member is mounted on the sawhead assembly and is free to push a side surface of the bandsaw blade with a predetermined force so as to prevent vibration of the blade.

Abstract: An automatic faucet according to the present invention is characterized in that a protective cover for a sensor or the like is removably mounted in a superposed state on the inner surface of a spout body integrally formed with a discharge water flow path within the wall to constitute a spout, and a sensor or the like fitting space for storing a manual sensor, a sensor cord and the like is formed between the spout body and the protective cover for the sensor or the like. That is, the spout constituting the principal portion of the automatic faucet is substantially formed by assembling the mutually independent spout body having formed therein the discharge water flow path and protective cover for the sensor or the like. Accordingly, the spout of the automatic faucet can be assembled easily.

Abstract: A bubbly water outlet device comprises a swirl chamber which is connected to a water supply source and is adapted to swirl a flow, and a bubbler chamber which is connected to the swirl chamber through a discharge port provided substantially at a center of the swirl chamber. The bubbler chamber is adapted to suck air from an exterior by virtue of the inflow of water from the discharge port and is capable of discharging bubbly water.

Abstract: A bandsaw machine which has a sawhead assembly in which a flexible endless bandsaw blade is trained around a pair of bandsaw blade wheels to cut a workpiece, with the blade being guided by a guide arm, includes a guide member on the guide arm, for holding the bandsaw blade in a vertical orientation by pushing the bandsaw blade from both sides. A rolling member is mounted on the sawhead assembly and is free to push a side surface of the bandsaw blade with a predetermined force so as to prevent vibration of the blade.

Abstract: A bandsaw machine which has a sawhead assembly in which a flexible endless bandsaw blade is trained around a pair of bandsaw blade wheels to cut a workpiece, with the blade being guided by a guide arm, includes a guide member on the guide arm, for holding the bandsaw blade in a vertical orientation by pushing the bandsaw blade from both sides. A rolling member is mounted on the sawhead assembly and is free to push a side surface of the bandsaw blade with a predetermined force so as to prevent vibration of the blade.

Abstract: A bandsaw machine which has a sawhead assembly in which a flexible endless bandsaw blade is trained around a pair of bandsaw blade wheels to cut a workpiece, with the blade being guided by a guide arm, includes a guide member on the guide arm, for holding the bandsaw blade in a vertical orientation by pushing the bandsaw blade from both sides. A rolling member is mounted on the sawhead assembly and is free to push a side surface of the bandsaw blade with a predetermined force so as to prevent vibration of the blade.