Abstract: Disclosed is a high-quality, efficiently manufacturable thin film transistor in which leakage current is minimized. The thin film transistor is provided with a semiconductor layer (34) that contains a channel region (34C) having a microcrystalline semiconductor; source and drain contact layers (35S and 35D) that contains impurities; a first source metal layer (36S) and a first drain metal layer (36D), and a second source metal layer (37S) and a second drain metal layer (37D). The end portion of the second metal source layer (37S) is located at a position receded from the end portion of the first metal source layer (36S) and the end portion of the second drain metal layer (37D) is located at a position receded from the end portion of the first drain metal layer (36D). The semiconductor layer (34) contains low concentration impurity diffusion regions formed near the end portions of the aforementioned source contact layer (35S) and drain contact layer (35D).

Abstract: The invention provides a thin film transistor that can improve its operating speed by improving crystallinity near a bottom surface of a channel layer. Of laser light irradiated onto an amorphous silicon layer, light transmitted through the amorphous silicon layer is absorbed by a gate electrode 130 and thereby produces heat. Since the gate electrode 130 is made of a titanium layer 102 with a low thermal conductivity, the produced heat is less likely to be transmitted through a gate wiring line 110 and dissipated and thus increases the temperature of the gate electrode 130. Radiant heat from the gate electrode 130 is provided to a bottom surface of the amorphous silicon layer and thus the amorphous silicon layer is also heated from its bottom surface. As a result, an amorphous silicon layer 106a melts not only from its top surface but also from its bottom surface and is solidified, whereby crystallization proceeds, and thus, the amorphous silicon layer 106a turns into a polycrystalline silicon layer 106b.

Abstract: An ink jet device (100) includes: an ink jet head (1) having a nozzle opening for ejecting ink; a capping element (2) removably fitted on the ink jet head (1) so as to cover a surface defining the nozzle opening; a filter chamber (5) for passing ink fed thereto from an ink tank (9) to the ink jet head (1) through a filter; a first negative pressure generator (7) connected to the capping element (2) for providing a negative pressure inside the capping element (2) in a position fitted on the ink jet head (1) to discharge air present inside the capping element (2); and a second negative pressure generator (8) connected to an exhaust port (55) for providing a negative pressure inside the filter chamber (5) to discharge air present inside the filter chamber (5) from the exhaust port (55). The second negative pressure generator (8) provides the negative pressure inside the filter chamber (5) while the first negative pressure generator (7) is providing the negative pressure inside the capping element (2).

Abstract: An ink jet head includes a base with front and rear ends having a plurality of channel grooves separated by channel walls each including a piezoelectric extending to the rear end, a cover that is placed on the base to be in contact therewith and opposite to the face of the base that has the channel grooves, electrodes placed on at least part of the inner surface of each one of the channel grooves, a conductive resin electrically connected with the electrode plugging up each of the channel grooves at the rear end, and projections as a pressing means for pressing the top of the conductive resin at the rear end of each channel groove.

Abstract: An ink jet head includes a base with front and rear ends having a plurality of channel grooves separated by channel walls each including a piezoelectric extending to the rear end, a cover that is placed on the base to be in contact therewith and opposite to the face of the base that has the channel grooves, electrodes placed on at least part of the inner surface of each one of the channel grooves, a conductive resin electrically connected with the electrode plugging up each of the channel grooves at the rear end, and projections as a pressing means for pressing the top of the conductive resin at the rear end of each channel groove.

Abstract: There is provided a recording medium transportation apparatus providing air suction to adhere a recording medium to a belt while the recording medium is being transported thereby, wherein the belt can have an optimized surface roughness and adjacent suction holes provided therein can be spaced by an optimized distance to provide an optimized level of force allowing the belt to adhere to the recording medium to transport the recording medium with high precision. The belt transporting a sheet of paper adhered thereto through air suction has a surface roughness (Ra) set in a range obtained by substituting an equivalent adhesion diameter (Dx) defined by: 0.5 × D ⁢   ⁢ 0 2 ⁢   ⁢ e c0 / c1 ≦ Dx ≦ 0.

Abstract: In a recording medium transportation apparatus that transports a recording medium held attracted to a belt by air suction, the recording medium can be transported stably with generation of curling at the side end of the recording medium suppressed. A plurality of suction holes generating suction force by air suction are formed at the belt. A plurality of suction holes extending in one row over the belt running direction form hole rows. Each hole row is set to be located corresponding to the width dimension of a paper sheet of the size of A3, B4, A4, B5 defined by the Japanese Industrial Standard and post card. When a sheet of respective size is placed on the belt, the side end of the width direction is drawn by suction holes.