Abstract:
PURPOSE:To automate supply, discharge, circulation, preservation, etc., of ink at an ink pan by forming an ink circulation, route having a pump and a filter among the pan, an ink tank and a waste liquid tank. CONSTITUTION:An ink circulation route 216 connected in a by-pass state from an ink supply route 213 to an ink discharge route 215 is formed. Incidentally, an ink return route 217 to an ink tank 212, a cleanser tank 219 supplied with cleanser 218, etc., are connected on the way of the route 216. A main pump P1, an ink filter F1, valves V1, V2, V3, V4, F5, etc., are provided at the route 216. A liquid level sensor S1 for holding a liquid level of the ink 46 constant is provided in the pan 42.
Abstract:
PROBLEM TO BE SOLVED: To correct the curl with reduced variation in a single roll paper, and to be capable of responding to a various types of roll papers. SOLUTION: A decurling mechanism comprises: capstan rollers 2a, 2b drawing the roll paper 1 wound in a rolled manner from one end side and carrying in a predetermined direction; a decurling roller 5 correcting the curl of the roll paper 1 by pressing one face side of the roll paper 1 carried by the capstan rollers; a guide roller 6 disposed to be closer to an upstream side in a carrying direction of the roll paper 1 than the decurling roller and guiding the other face side of the roll paper 1; a moving means moving up/moving down the decurling roller 5 so that the decurling roller 5 can be pressed on a surface of the roll paper 1 or be separated from the face; and a measuring means 8 measuring change in roll diameter caused by drawing out of the roll paper 1. Depending on change in the measured roll diameter, the moving means is driven to change a decurling angle by pressing of the decurling roller 5 with respect to the roll paper 1. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To prevent overlap of materials to be carried by a carrying roller and a return roller adjacent to each other, so as to feed the materials one by one. SOLUTION: A feeding device has the carrying roller 2 abutted with one face of the material 1 to be carried and driven by a drive means 4 to be rotated in a direction carrying the material 1, and the return roller 3 abutted with the other face of the material 1 and driven by the drive means 4 to be rotated in a direction returning the material 1, and each roller face of the rollers are mutually opposed and disposed to be adjacent to each other. A plurality of pairs of the carrying rollers 2 and the return rollers 3 adjacent to each other are arranged in the carrying direction of the material 1. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To prevent capstan traces from emerging while ensuring the transfer power by use of projections of a capstan. SOLUTION: An image recording medium transfer apparatus includes: the capstan 21 that transfers a photographic printing paper 20; a pinch roller provided opposite the capstan 21 to pass the photographic printing paper 20 between the pinch roller and the capstan 21; and pressing force application means configured to exert a pressing force to press the capstan 21 and the pinch roller against each other via the photographic printing paper 20. The capstan 21 includes a plurality of the projections 21a on a pressing surface of the capstan that presses the photographic printing paper 20. When a height of each of the projections 21a from the pressing surface is defined as H, the projection is formed in a range of 20 μm
Abstract:
PROBLEM TO BE SOLVED: To immediately and certainly detect a skew of printing paper generated in the middle of printing, and to promptly and accurately remove the generated skew. SOLUTION: The carrying device comprises a skew detecting means for detecting the skew of the printing paper 20 generated during carrying, and a skew correcting means correcting the skew of the printing paper 20 according to a detection result of the skew by the skew detecting means. The skew detecting means is a pair of sensor rollers 41 (41R, 41L) driven to rotate while contacting with both side ends of the printing paper 20 and detecting the carrying speed of both side ends of the printing paper 20. In the skew correcting means, when the sensor rollers 41 (41R, 41L) detect that the carrying speeds of both end portions of the printing paper 20 are different, both end portions rotate a left end portion 21 or a right end portion 21R of a capstan roller 21 which can be individually rotated, thereby guiding the recording medium in a direction resolving the difference of the carrying speed of both side ends of the printing paper 20. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To control capstan marks appearing on a recording medium due to a capstan roller while assuring the transportation power of the recording medium by the capstan roller. SOLUTION: In a thermal printer 10 which performs printing by heating each heating element 11a of a thermal head 11 while pinching a print sheet 20 between a capstan roller 21 and a pinch roller 22 and carrying the print sheet 20 through rotation of the capstan roller 21 coming into pressure contact with the print sheet 20, the capstan roller 21 is provided with a plurality of protrusions 21a on the surface coming into pressure contact with the print sheet 20, and a pinch pressure varying device 40 for adjusting the pressure contact force between the capstan roller 21 and the print sheet 20 adjusts the pressure contact force when the thermal head 11 is printing on the print sheet 20 to become smaller than that when printing is not performed. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PURPOSE:To contrive the high density of printing dots by a construction wherein, corresponding electrode conductors on both the main surfaces of an insulating substrates are disposed opposed to each other across the substrate, and a voltage is applied between the opposed electrode conductors. CONSTITUTION:A voltage is applied between counter electrode conductors 12p, 12n disposed opposedly to each other across an insulating substrate 11, whereby printing dots 16 are formed on an electrorecording paper by electrically conducting the end edges facing the side end face 11c of the substrate 11. A distance between the printing dots 16 is made equal to a distance between the electrodes in pair, namely corresponding to a distance between the adjacent electrodes 12p or 12n. Therefore, a substantial pitch Pd of the printing dots 16 is made smaller, and the printing dots 16 can be provided with high density. Furthermore, because the conduction counter electrode conductors 12p and 12n are disposed opposedly across the insulating substrate 11, the printing dots 16 are formed with a minimum distortion, which avoids the irregularities in density.
Abstract:
PROBLEM TO BE SOLVED: To always realize sufficient conveying force by a capstan roller, to prevent deviation of a conveying position of photographic paper and to outstandingly reduce a conveying flaw of the capstan roller appeared on the photographic paper. SOLUTION: In the conveying device, the photographic paper 20 is clamped between the capstan roller 13 and a pinch roller 15 and is conveyed. The capstan roller 13 and the pinch roller 15 are provided in n pairs (n is natural number) and in the respective capstan rollers 13, projections 14 are formed on a surface of a position not superposed in an axial direction respectively. COPYRIGHT: (C)2007,JPO&INPIT