APPLICATION DEVICE AND METHOD OF PREVENTING APPLICATION HEAD CLOGGING

• Main Authors: TOYOSHIMA, NORIO, YAMAZAKI, TAKAHIRO, KUROSAWA, MASAHIKO, SHIGEYAMA, AKIHIRO
• Format: Patent
• Language: English; French; Japanese
• Published: 06.04.2006
• Subjects: APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; APPARATUS SPECIALLY ADAPTED THEREFOR; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; BASIC ELECTRIC ELEMENTS; CINEMATOGRAPHY; CORRECTION OF TYPOGRAPHICAL ERRORS; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; ELECTROGRAPHY; FREQUENCY-CHANGING; HOLOGRAPHY; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; MATERIALS THEREFOR; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; ORIGINALS THEREFOR; PERFORMING OPERATIONS; PHOTOGRAPHY; PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES; PHYSICS; PRINTING; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SELECTIVE PRINTING MECHANISMS; SEMICONDUCTOR DEVICES; SPRAYING OR ATOMISING IN GENERAL; STAMPS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING; TYPEWRITERS

An application device for applying a liquid to a member to which the liquid is to be applied, the application being made by controlling the quantity of the liquid discharged from a discharge opening (5ca) of a nozzle plate (5c). A glass-made thin flat plate (71) is provided so as to face a bottom surface of the nozzle plate (5c), and a controller (9) controls the flat plate (71) to move it vertically, enabling it to be in contact with an application liquid drop L. When the flat plate (71) is caused to be in contact with the liquid drop L at the discharge opening (5ca) of the nozzle plate (5c), the liquid drop L spreads, while pulling the flat plate (71) with which the liquid drop L is in contact, between the flat plate (71) and the nozzle plate (5c) to form an application liquid film. This causes the flat plate (71) to be adhered to the nozzle plate (5c) side. As a result, that portion of the application liquid which is near the discharge opening (5ca) is prevented from being in contact with air, and this prevents the nozzle discharge opening from clogging by solidification of the application liquid. Dispositif d'application servant à appliquer un liquide à un organe auquel le liquide doit être appliqué, l'application étant effectuée par gestion de la quantité de liquide débité depuis une ouverture de débit (5ca) d'une plaque de buses (5c). Une plaque de verre mince et plate (71) est installée face à la surface inférieure de la plaque de buses (5c), et un contrôleur (9) gère la plaque plate (71) afin de la déplacer à la verticale, ce qui lui permet d'être en contact avec une goutte de liquide à appliquer L. Quand la plaque plate (71) est mise en contact avec la goutte de liquide L au niveau de l'ouverture de débit (5ca) de la plaque de buse (5c), la goutte de liquide L s'étale, pendant la traction de la plaque plate (71) ce qui met la goutte de liquide L en contact, entre la plaque plate (71) et la plaque de buse (5c) pour former une pellicule de liquide à appliquer. La plaque plate (71) adhère ainsi au côté de la plaque de buse (5c). La partie du liquide à appliquer qui se trouve près de l'ouverture de débit (5ca) ne peut donc pas entrer en contact avec l'air, ce qui empêche l'ouverture de débit des buses de se boucher par solidification du liquide à appliquer.