摘要:
Ink is sucked in a first amount from recording heads by applying negative pressure of suction pumps to the recording heads in a state in which communication between the recording heads and the atmosphere is cut off by sealing the recording heads by means of caps. The ink in the caps is then discharged by causing negative pressure of the suction pumps to act in a state in which the caps are made to communicate with the atmosphere, and then wiping is effected by a wiping blade.
摘要:
A positive resist composition comprising an alkali-soluble phenolic resin, a photosensitive agent composed of a quinonediazide sulfonate of a specific polyhydroxy compound, and an aromatic compound having at least one phenolic hydroxyl group.
摘要:
A transparent brittle film prepared from a resin composition comprising (A) 100 parts by weight of a vinyl chloride resin, (B) 20 to 200 parts by weight of an acrylic resin, (C) 20 to 250 parts by weight of fused silica comprising aggregates of particles having an average particle diameter in the range of 5 to 20 .mu.m and individual particle diameters in the range of 0.5 to 100 .mu.m or aluminum hydroxide or barium sulfate comprising aggregates of particles having an average particle diameter in the range of 1 to 20 .mu.m and individual particle diameters in the range of 0.2 to 50 .mu.m, (D) 0 to 40 parts by weight of a plasticizer, and (E) 0.5 to 10 parts by weight of a stabilizer. The film is brittle, easily torn, and transparent, has a suitable degree of flexibility and hardness, and can be produced inexpensively and easily.
摘要:
An ink tank cartridge is provided removably mountable onto an ink supply needle of the ink-jet type recording apparatus body. The cartridge has a housing provided with an ink supply port extending through and projecting from a wall of the housing and into the chamber of the housing. A porous member having ink impregnated thereon is positioned inside the chamber of the housing abutting against the ink supply port. A filter is mounted on the inner end opening of the ink supply port. The ink tank cartridge is further provided with a packing member for resiliently abutting against the outer periphery of the ink supply needle and is positioned adjacent one end of the ink supply port. The outer opening of the ink supply port is sealed with a sealing member through which the ink supply needle penetrates. A further porous member may be positioned in the ink supply port between the packing member and the filter to prevent a false ink end indication caused by air reaching an electrode of an ink end sensor positioned between the filter and the further porous member when the ink tank cartridge is removed from the recording apparatus.
摘要:
An ink jet recording apparatus which includes a recording head communicated via an ink supply needle with an ink tank and including electrodes for detecting a remaining amount of ink and being responsive to a print signal for spouting ink drops to recording paper, a capping unit abutting against the front of said recording head for holding the nozzle openings in an airtight state, a suction pump for supplying negative pressure to the capping unit, a resistance value detection circuit for detecting electric resistance across the electrodes for detecting a remaining amount of ink, a reference value storage unit for storing a resistance value across the electrodes relative to the remaining amount of ink in the ink tank, a resistance value comparison unit for comparing the resistance across the electrodes with the reference value, and a pump control unit responsive to the resistance value comparison result for controlling a pulse motor driving the suction pump. The resistance value detected by the resistance value detection circuit is compared with the reference value stored in the reference value storage unit to determine whether or not an ink tank is mounted, remounted, how much ink is in the ink tank, etc. Based on the determination result, the motor is controlled by the pump control unit for selecting the suction mode of ink from the recording head.
摘要:
The present invention provides a humidifier for a refrigeration showcase comprising a plurality of ultrasonic vibrators for atomizing water, ultrasonic oscillation circuits provided for the vibrators respectively in corresponding relation thereto,and control means for varying the oscillation output of the oscillation circuit corresponding to at least one of the vibrators to control the amount of atomized water to be produced.
摘要:
An analog-digital conversion circuit apparatus connectable to a microcomputer for measuring electric voltage and current of a vibrator of an ultrasonic wave oscillator is disclosed. An analog high-frequency wave voltage value signal and an analog high-frequency wave current value signal acquired from a vibration system are alternately input to a conversion-transmission section. A digital high-frequency wave voltage value signal and a digital high-frequency wave current value signal, which have been converted in the conversion-transmission section, are transmitted to the microcomputer for various uses connected with the electric voltage and current of the vibrator of the ultrasonic wave oscillator.
摘要:
The air dispersion plate at a lower part of a fluidized bed combustion furnace is provided with a large number of air injection nozzles uniformly distributed therethroughout and made of a porous refractory material having good air permeability and high heat and wear resistances. All of the fluidizing air supplied into the wind box below the dispersion plate is injected through these nozzles into the combustion chamber to fluidize the fluidizable material, which, after combustion is stopped, cannot flow through the nozzles into the wind box to cause heat damage and contamination therein and in the air supply pipe.