Abstract:
PROBLEM TO BE SOLVED: To properly control the size of ejected ink droplets. SOLUTION: When a series of ejection processes including a first process (A-B) for expanding the ink chambers to draw in the meniscuses in the nozzle orifices toward the ink chambers, a second process (B-C) for filling the ink chambers with ink to move the meniscuses toward the nozzle orifices and a third process (C-D) for contracting the ink chambers to eject ink droplets are performed, at least one of the meniscus drawing-in amt. of the first process and the required time of the second process is changed to control the meniscus position at the start point of time of the third process to control the size of ink droplets ejected in the third process.
Abstract:
PROBLEM TO BE SOLVED: To properly control the flying speed of ejected ink droplets. SOLUTION: Nozzle orifices for ejecting ink droplets, ink chambers communicating with the nozzle orifices, ink supply chambers for supplying ink to the ink chambers and piezoelectric elements for expanding and contracting the ink chambers corresponding to applied voltage are provided. When a series of ejection processes including a first process (A-B) for expanding the ink chambers to draw in the meniscuses in the nozzle orifices toward the ink chambers, a second process (B-C) for filling the ink chambers with ink to move the meniscuses toward the nozzle orifices and a third process (C-D) for contracting the ink chambers to eject ink droplets are performed, the position of each of the meniscuses at the start point of time of the third process and the cyclical positional change speed thereof are appropriately selected to control the size and flying speed of ink droplets ejected in the third process.
Abstract:
PROBLEM TO BE SOLVED: To enable faithful expression of halftone and correction of irregularities in ink droplet discharge characteristics among nozzles. SOLUTION: Waveform selection sections 141-1 to 141-n select one from multiple driving signals 145-0 to 145-N outputted from the driving waveform generation section 142 on the basis of waveform selection signals 146-1 to 146-3 and supplies selected driving signals to piezoelectric elements provided for multiple nozzles, respectively, to discharge ink droplets, making it possible to vary the size of all ink droplets discharged simultaneously from the nozzles for all nozzles.
Abstract:
PROBLEM TO BE SOLVED: To elevate the transfer efficiency of a recording material and to improve transfer density with high resolution by constituting so that a recording head has a recording material flight part and contacts a recording material relatively slantingly, and the recording material flight part and the recording material are held at a prescribed distance by the contact. SOLUTION: In a printer head 25, a printed board 12 and a head chip 1 are arranged in parallel on a base 10 and brought into contact, and on it is installed a cover 18. A recording head is arranged downward, and one end 10a of the base is contacted with a recording material 20 so that the recording head 25 makes an inclined angle of θ with the recording material 20. The installation part of the printed board 12 of a base 10 is formed thinner by the thickness of the printed board 12. A cover 18 is a cross section in which an inclined surface is formed on a surface opposite to the recording material 20, and its side forms a wall surface to make a box shape as a whole.
Abstract:
PURPOSE: To surely fetch a desired image by giving a trigger to a storage means, receiving only the specified number of frames so as to conduct stop control thereby setting the number of frames. CONSTITUTION: A frame memory(FM) 8 is a memory circuit for a general-purpose D-RAM and operated while being controlled by a memory control circuit 9 and a digital video signal DV is recorded in the write mode in the unit of fields. A memory space of the FM 8 is used sequentially cyclicly to record intermittently an image formed by video signals to record a newest image for the memory space at the time interval. After the trigger signal is received, when the FM 8 records the video signals by the specified number of frames, the recording of the FM 8 is stopped, then the size of the memory space before and after the timing of the trigger signal and the image depending on the specified number of frames is recorded in a form of a decomposed photograph.
Abstract:
PROBLEM TO BE SOLVED: To markedly improve a productivity and an assembling property by facilitating insertion and extraction of a circuit board to a connector even in a very limited space such as a head used in a line printer. SOLUTION: A flexible circuit board 3 has a flexibility and the end side of the flexible circuit board 3 is made to be an insertion terminal section 3a with respect to a connector 4a. A reinforcement plate 31 is attached to the insertion terminal section 3a of the flexible circuit board 3 and only a part of the reinforcement plate 31 is stuck to the insertion terminal section 3a with an adhesive layer 32. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To prevent a warpage or a distortion from occurring on a module frame, to increase the planar property and the assembly precision of an ink discharging surface, and at the same time, to reduce the manufacturing cost. SOLUTION: A head chip arranging hole 11b of the module frame 11 is formed by an etching process. A nozzle seat 25 is respectively arranged in such a manner that on one side surface of the module frame 11, a nozzle 25a may be positioned in the head chip arranging hole 11b to each head chip arranging hole 11b, and a part of the region of the head chip arranging hole 11b may be covered. At the same time, the nozzle seat 25 is formed into a size which covers a part of the region of the head chip arranging hole 11b. The head chip is respectively arranged in each head chip arranging hole 11b from the other side surface of the module frame 11 in such a manner that a heating resistor and the nozzle 25a may be arranged at confronted positions. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an ink discharging device which can easily increase the processing precision of an ink discharging section, and as well as reduce the variation in the amount of discharging ink droplets and the discharging angle or the like even when dust and dirt are mixed in the ink, and in addition, satisfy both of a high printing grade and a printing speed at a high level by preventing the feeding speed of the ink to the ink discharging section from decreasing. SOLUTION: This ink discharging device includes a plurality of heat releasing resistors 13 which are provided on a board member 11, an ink liquid chamber for pressurizing the ink by the heat generated by the heat releasing resistors 13, and a nozzle 17 having a discharging port for discharging the ink which has been pressurized in the ink liquid chamber. In the ink discharging device, a nozzle 17 is arranged above each of heating resistors 13, and at the same time, an opening face of the nozzle 17 on the heating resistor 13 side is made an ink flow-in port 17b, and the other opening face is made an ink discharging port 17a. Thus, the internal space of the nozzle 17 is made to work as the ink liquid chamber as well without separately independently forming the ink liquid chamber. Then, an ink circulating space section having a height H is formed by making a supporting member 14 have the height H. When a minimum opening length of the internal space of the nozzle 17 including the discharging port 17a and the ink flow-in port 17b is taken as Dmin, a relationship of H
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid discharging cartridge and a liquid discharging apparatus which enable printing of a superior image quality without color density unevenness by suppressing feeding unevenness of a liquid to discharge openings and stabilizing a liquid droplet amount discharged from the discharge openings. SOLUTION: One or more wave prevention elements 43 are set in an ink passage 42. For example, even if standing waves of a short wavelength are generated at a region 44 adjacent to the wave prevention element 43 within the ink passage 42, the energy by the standing waves can be dispersed to a plurality of points, so that the generation of pressure unevenness to ink (i) in the ink passage 42 is suppressed. A proper amount of the ink (i) is discharged from a nozzle 52a of an ink liquid chamber 54 to which the ink (i) of a suitable amount not too much and not insufficient is supplied. Printing of the superior image quality without color density unevenness is enabled accordingly. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To manufacture a liquid ejection head suitable for a line head inexpensively with high accuracy. SOLUTION: A modular frame 11 is bonded to a nozzle sheet 13 in which a nozzle array is formed and a plurality of head modules 10, each arranged with a plurality of head chips internally, are positioned on the adhesive sheet C3 of a holding plate C1 while being arranged in series. Position of each head module 10 is held by adhesion of the adhesive sheet C3. Subsequently, a head frame 2 is mounted from above and bonded to each head module 10. Thereafter, the holding plate C1 is irradiated with UV-rays from the lower surface side thus extinguishing adhesion of the adhesive sheet C3. Finally, each head module 10 and the head frame 2 bonded together are separated from the adhesive sheet C3. COPYRIGHT: (C)2005,JPO&NCIPI