摘要:
An ink jet nozzle unit (10-14) is provided with an ink-shortage-detecting thorough hole comprising nozzle-shaped thorough holes (21,23), filter (25) and nozzle passage (26) and also with a pair of electrodes (17,18) in the middle thereof. This thorough hole, communicating with other nozzle passages including passage (24) equipped with PZT (15), is usually filled with ink, while the air is introduced into the thorough hole via orifice in the absence of ink.
摘要:
Preventing the excessive supply of the release agent 51, and simultaneously preventing the dripping of the excessive release agent 51 when applying a release agent 51, in order to prevent the offset by the heat roll 41. In a fixing device 4 having a heater lamp 43 mounted as a heat source in the interior of a cored bar 31 of a heat roll 41, wherein the temperature is maintained to a heat-fixing temperature by controlling the electricity being supplied to the heater lamp 43, an application roll 54 is mounted so as to contact the heat roll 41 for a uniform application of a release agent 51, and an application member 53 for supplying and applying the release agent 51 to the application roll 54 is mounted so as to contact said application roll 54, while a blade 55 for limiting the release agent 51 being applied to the roll is mounted thereto. The application member 53 and the blade 55 are positioned so that the opposing end surfaces thereof are adjacent to each other. Thereby, the application region in the tip portion of the application member 53 is in a saturated state, and the excessive supply of the release agent 51 is limited, which leads to the stabilization of the supply quantity, and the prevention of generation of an excessive release agent 51a.
摘要:
In a non-printing state, a cap (1) is moved toward an ink jet nozzle of a head (2), for sealing the same. Immediately before the cap (1) comes into contact with the jet nozzle, a gear (16) is rotated by a motor (10) to drive a piston (9), for sucking air from the interior of the cap (1) by a suction pump consisting of the piston (9) and a cylinder (15). This sucking operation is continued until the cap (1) comes into close contact with the jet nozzle, for sucking the ink from the head (2).
摘要:
A serial printer includes a carriage (1) reciprocating in a main scanning direction, a reading sensor (8) mounted in carriage (1), a timing fence (5) arranged in the main scanning direction, a mechanism (1c, 1d, 7, 10) preventing movement of carriage (1) in the main scanning direction, and a controlling portion (9) detecting a set condition for image formation in accordance with read data of timing fence (5) from reading sensor (8) for controlling image formation. Controlling portion (9) detects the set condition for image formation only in accordance with the read data of timing fence (5), so that detection of the set condition for image formation is enabled without increasing the size of an apparatus and cost, or without decreasing a processing efficiency in image formation.
摘要:
A particle surface improving method for forming a film of a surface improving agent that improves the property of a particle surface by exposing particles to a supersaturation atmosphere of the surface improving agent to let the surface improving agent condense on the particle surface. Compared with conventional methods, this method can improve the particle surface by a simpler manipulation in a shorter time without charging the particles.