摘要:
A chip component take-in apparatus takes in and guides downward prismatic chip components stored in a bulk state in a storage chamber one by one in a predetermined direction. When a first take-in member and a second take-in member are relatively moved up and down in each flat face contact state, the chip components in face contact with the flat faces of the take-in members are gradually guided to a center along guide ways. The guided chip components in the longitudinal direction thereof are taken into a passage constituted by grooves and are moved downward along the passage by self-weight.
摘要:
A chip component take-in apparatus takes in and guides downward prismatic chip components stored in a bulk state in a storage chamber one by one in a predetermined direction. When a first take-in member and a second take-in member are relatively moved up and down in each flat face contact state, the chip components in face contact with the flat faces of the take-in members are gradually guided to a center along guide ways. The guided chip components in the longitudinal direction thereof are taken into a passage constituted by grooves and are moved downward along the passage by self-weight.
摘要:
This invention relates to novel purine derivatives of formula (I): ##STR1## where R.sup.2 and R.sup.9 are hydrocarbon groups, R.sup.6 is an amino group and R.sup.8 is a hydroxyl, or acyloxy group. These purine derivatives are effective at promoting secretion of interferon in patients, and can be used to treat diseases against which interferon is effective.
摘要:
Ear-piece type acoustic transducing part is provided with a bone-conducted sound pickup microphone for picking up a bone-conducted sound, a directional microphone for picking up an air-conducted sound and an electro-acoustic transducer for transducing a received speech signal to a received speech sound. A transmitting-receiving circuit connected to the acoustic transducing part includes: a low-pass filter which permits the passage therethrough of low-frequency components in a bone-conducted sound signal from the bone-conducted sound pickup microphone; a high-pass filter which permits the passage therethrough of high-frequency components in an air-conducted sound signal from the directional microphone; first and second variable loss circuits which impart losses to the outputs from the low-pass filter and the high-pass filter, respectively; a comparison/control circuit which compares the output levels of the low-pass filter and the high-pass filter with predetermined first and second reference levels, respectively, and based on the results of comparison, controls losses that are set in the first and second variable loss circuits; and a combining circuit which combines the outputs from the first and second variable loss circuits into a speech sending signal.
摘要:
For printing fine patterns, a fine pattern of a setting type ink is applied to a printing plate surface to become printing elements. Then, the setting type ink thus applied on the printing plate is subjected to a setting treatment thereby to set at least one part of the ink pattern, and thereafter the printing plate and an object to be printed are pressed relatively against each other thereby to transfer the ink pattern onto the print object. The printing plate can be an intaglio plate or a lithographic plate. Fine patterns of printing element widths as fine as 3 .mu.m with an ink film thickness of 2 .mu.m can be printed efficiently with the high precision on various objects including hard and rigid objects.
摘要:
A reflow apparatus, where formic acid is used for cleaning a surface of a solder electrode on a processing target, is disclosed. The reflow apparatus includes a processing chamber, a formic acid introduction mechanism for supplying an atmosphere gas containing formic acid to the processing chamber, and a shielding member that is made of a material having corrosion resistance against formic acid. The shielding member is arranged between a reflow processing section of the processing chamber and an inner wall of the processing chamber. In place of or in addition to the shielding member, the reflow apparatus may include a heater for decomposing residual formic acid.
摘要:
A process for producing a semiconductor device, includes: first melting by heating only a superior portion of a bump formed on an electrode on one principle surface of a semiconductor substrate; and second melting the entire bump by also heating an inferior portion of the bump.
摘要:
A forming method of an electrode includes the steps of providing an electrode material on a conductive part; exposing the electrode material at a temperature equal to or higher than a melting point of the electrode material in an oxidizing atmosphere; and exposing the melted electrode material, in a reducing atmosphere, at a temperature equal to or higher than the melting point of the electrode material and lower than the temperature at which the electrode material is exposed in the oxidizing atmosphere.
摘要:
A process for producing a semiconductor device, includes: first melting by heating only a superior portion of a bump formed on an electrode on one principle surface of a semiconductor substrate; and second melting the entire bump by also heating an inferior portion of the bump.
摘要:
A reflow apparatus, where formic acid is used for cleaning a surface of a solder electrode on a processing target, is disclosed. The reflow apparatus includes a processing chamber, a formic acid introduction mechanism for supplying an atmosphere gas containing formic acid to the processing chamber, and a shielding member that is made of a material having corrosion resistance against formic acid. The shielding member is arranged between a reflow processing section of the processing chamber and an inner wall of the processing chamber. In place of or in addition to the shielding member, the reflow apparatus may include a heater for decomposing residual formic acid.