Abstract:
A remaining-liquid-amount apparatus for displaying an amount of conductive liquid (ink) remaining in a container includes electrode units which are arranged along a direction in which the liquid level falls when the amount of liquid in the container decreases and which conduct current when the electrode units are in contact with the liquid, a voltage source (pulse generator) which applies a voltage to the electrode units, a liquid detector (DFFs) which detects the presence/absence of the liquid at positions of the electrode units on the basis of whether or not the electrode units conduct current when the voltage is applied by the voltage source, and a remaining- liquid-amount display unit (LEDs) which displays, in steps, the amount of liquid remaining in the container on the basis of the detection result of the presence/absence of the liquid at positions of the electrode units obtained by the liquid detector.
Abstract:
A liquid-amount detecting apparatus detects the amount of a liquid in containers. The liquid-amount detecting apparatus includes a liquid detecting circuit and a determining unit. The liquid detecting circuit includes electrode units disposed so as to be in contact with the liquid in the containers, which becomes electrically conductive when in contact with the liquid, an impedance, and an AC-signal source. An AC signal not containing a DC component is input from the AC-signal source to the electrode units through the source impedance, and a signal representing the status of electric connection of the electrode units is output. Furthermore, based on the output signal, a binary signal representing the presence or absence of electrical connection of the electrode units is output. The determining unit determines the presence or absence of the liquid at the electrode units based on the binary signal output from the liquid detecting circuit.
Abstract:
A liquid-amount detecting apparatus detects the amount of a liquid in containers. The liquid-amount detecting apparatus includes a liquid detecting circuit and a determining unit. The liquid detecting circuit includes electrode units disposed so as to be in contact with the liquid in the containers, which becomes electrically conductive when in contact with the liquid, an impedance, and an AC-signal source. An AC signal not containing a DC component is input from the AC-signal source to the electrode units through the source impedance, and a signal representing the status of electric connection of the electrode units is output. Furthermore, based on the output signal, a binary signal representing the presence or absence of electrical connection of the electrode units is output. The determining unit determines the presence or absence of the liquid at the electrode units based on the binary signal output from the liquid detecting circuit.
Abstract:
A negative pressure generated inside a liquid-ejecting head can circulate liquid between the liquid-ejecting head and a liquid tank, prevent the liquid from leaking out of nozzles while the liquid is circulating, and remove bubbles contained in the liquid. A head cartridge includes a printhead ejecting ink from ink-ejecting nozzles formed in a nozzle plate of the printhead, an ink-supplying conduit supplying the ink from an ink tank to an ink chamber in the printhead, an ink-refluxing conduit refluxing the ink from the printhead to the ink tank, and a liquid-delivering pump disposed on: the ink-refluxing conduit and circulating the ink between the printhead and the ink tank. The liquid-delivering pump is driven to generate a negative pressure inside the printhead to circulate the ink between the printhead and the ink tank.
Abstract:
A remaining-liquid-amount apparatus for displaying an amount of conductive liquid (ink) remaining in a container (11) includes electrode units (21a-21h) which are arranged along a direction in which the liquid level falls when the amount of liquid in the container decreases and which conduct current when the electrode units are in contact with the liquid, a voltage source (pulse generator) which applies a voltage to the electrode units, a liquid detector (DFFs) which detects the presence/absence of the liquid at positions of the electrode units on the basis of whether or not the electrode units conduct current when the voltage is applied by the voltage source, and a remaining-liquid-amount display unit (LEDs) which displays, in steps, the amount of liquid remaining in the container on the basis of the detection result of the presence/absence of the liquid at positions of the electrode units obtained by the liquid detector. A remaining-liquid-amount apparatus for displaying an amount of conductive liquid (ink) remaining in a container (11) includes electrode units (21a-21h) which are arranged along a direction in which the liquid level falls when the amount of liquid in the container decreases and which conduct current when the electrode units are in contact with the liquid, a voltage source (pulse generator) which applies a voltage to the electrode units, a liquid detector (DFFs) which detects the presence/absence of the liquid at positions of the electrode units on the basis of whether or not the electrode units conduct current when the voltage is applied by the voltage source, and a remaining-liquid-amount display unit (LEDs) which displays, in steps, the amount of liquid remaining in the container on the basis of the detection result of the presence/absence of the liquid at positions of the electrode units obtained by the liquid detector.
Abstract:
A remaining-liquid-amount apparatus for displaying an amount of conductive liquid (ink) remaining in a container (11) includes electrode units (21a-21h) which are arranged along a direction in which the liquid level falls when the amount of liquid in the container decreases and which conduct current when the electrode units are in contact with the liquid, a voltage source (pulse generator) which applies a voltage to the electrode units, a liquid detector (DFFs) which detects the presence/absence of the liquid at positions of the electrode units on the basis of whether or not the electrode units conduct current when the voltage is applied by the voltage source, and a remaining-liquid-amount display unit (LEDs) which displays, in steps, the amount of liquid remaining in the container on the basis of the detection result of the presence/absence of the liquid at positions of the electrode units obtained by the liquid detector. A remaining-liquid-amount apparatus for displaying an amount of conductive liquid (ink) remaining in a container (11) includes electrode units (21a-21h) which are arranged along a direction in which the liquid level falls when the amount of liquid in the container decreases and which conduct current when the electrode units are in contact with the liquid, a voltage source (pulse generator) which applies a voltage to the electrode units, a liquid detector (DFFs) which detects the presence/absence of the liquid at positions of the electrode units on the basis of whether or not the electrode units conduct current when the voltage is applied by the voltage source, and a remaining-liquid-amount display unit (LEDs) which displays, in steps, the amount of liquid remaining in the container on the basis of the detection result of the presence/absence of the liquid at positions of the electrode units obtained by the liquid detector.
Abstract:
PROBLEM TO BE SOLVED: To reduce the size, weight and cost of the apparatus by simplifying the structure thereof. SOLUTION: The liquid supply device comprises an ink tank 1 disposed above the ink ejection head 6 of a printer, a replaceable refilling ink tank 2 for storing refilling ink 9, an ink refilling tube 3 having one end 3b connected with the ink supply opening 10 of the ink tank 1 and the other end 3c connected removably with the lower end of the refilling ink tank 2 at the same position as that of the ink supply opening 10 or at a higher position, a means 4 for elevating/lowering the position of the middle portion of the ink refilling tube 3, a means 5 for detecting the residual quantity of ink in the ink tank 1, and a control means 6 for elevating/lowering the position of the middle portion of the refilling tube 3 by driving the elevating/lowering means 4 based on a detection output from the residual quantity of ink detection means 5, and supplying the refilling ink 9 from the refilling ink tank 2 to the ink tank 1 by utilizing the head difference of ink generated between the refilling ink tank 2 and the ink tank 1. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To attain miniaturization, cost reduction, and improvement of the operability by a simple structure. SOLUTION: A lower case 71 and an upper case 72 are formed into one piece via thin joining hinge parts 73 formed along opposed side edges, whereby a cartridge case 65 is provided which constitutes a pack loading space where an ink pack 67 with a liquid sealed inside is loaded. The cartridge case 65 has a tank cap member 70 combined on one of opposed side faces. A handle part 74 made freely foldable via a hinge part 89 with a thinned base on the other side face is integrally formed with an engagement projection 84 which holds the folded handle part. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To solve the problem that the dithering method and error diffusion method are indispensable for reproducing a density of each pixel in a printer in an inkjet system. SOLUTION: (a) In the case where a printing head with a nozzle array of k or more arrays corresponding to k types of ink (k is a natural number of not smaller than 2) of different concentrations is made an output device, (b) one pixel is formed by a dot group of m rows×m columns equivalent to a resolution of 1/m (m is a natural number of not smaller than 2) of a nozzle pitch. Moreover, when each dot is formed by superposition of ink droplets of the maximum of n shots (n is a natural number of not smaller than 2), (c) a density expression of the maximum of n+1 gradations by any of the k types of ink is made corresponding to each dot, and a density expression given by a combination of the whole dot group of (m rows)×(m columns) is made corresponding to all of density input values. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a mechanism which enables an end user to check the causes for a functional deterioration at a high technical level without the use of a dedicated analytical tool, with regard to the deterioration of an image quality of a printer device. SOLUTION: In the printer device 20, a detection part 25 which detects the state variations of a monitored object; a memory unit 24 which stores a detection value of the detection part 25 and a use history of the monitored object as status information; and a main body control part 23 which makes the communication of the status information with an external computer 30, are provided. In addition, in the external computer 30, an external control part 33 which analyzes the status information acquired through the communication with the printer device 20 and a display part 31 which presents to the end user the causes for an abnormality presumed by an analytical process in the form of a text or in the state of a visual representation, are provided. Thus the detailed and concrete information is made available to the end user as a primary operator. COPYRIGHT: (C)2005,JPO&NCIPI