When a liquid tank of a liquid spraying apparatus is filled with a liquid, after the liquid has been supplied into the spray tank of the liquid spraying apparatus, if the existence of residual bubbles is detected by a bubble detecting device, an operation is carried out in which the liquid inside th
When a liquid tank of a liquid spraying apparatus is filled with a liquid, after the liquid has been supplied into the spray tank of the liquid spraying apparatus, if the existence of residual bubbles is detected by a bubble detecting device, an operation is carried out in which the liquid inside the spray tank is drained so as to drain out the bubbles from the tank and the spray tank is refilled with a liquid. As a result, residual bubbles inside the spray tank are removed from the spray tank and the liquid can be applied appropriately to a photosensitive material without causing atomization failure.
대표청구항▼
1. A liquid spraying apparatus in which a nozzle plate is provided at a portion of a lower wall surface of a spray tank which stores a liquid therein, the nozzle plate has a row of nozzles made up of a plurality of nozzle holes through which the liquid is sprayed when the nozzle plate is reciprocate
1. A liquid spraying apparatus in which a nozzle plate is provided at a portion of a lower wall surface of a spray tank which stores a liquid therein, the nozzle plate has a row of nozzles made up of a plurality of nozzle holes through which the liquid is sprayed when the nozzle plate is reciprocated, comprising: at least a portion of the spray tank being formed from a transparent member; a monitoring camera which views an internal portion of said spray tank from at least a side end wall surface of said spray tank, through said transparent member; wherein said internal portion of said spray tank is photographed by said camera to determine an existence of residual bubbles in said spray tank. 2. A liquid spraying apparatus comprising: a nozzle plate provided at a portion of a lower wall surface of a spray tank which stores a liquid therein, the nozzle plate having a row of nozzles made up of a plurality of nozzle holes through which the liquid is sprayed when the nozzle plate is reciprocated; bubble detecting means which, when said spray tank is filled with the liquid, detect whether or not residual bubbles exist inside said spray tank; residual bubble prevention and control means which, when receiving a signal indicating that an existence of residual bubbles has been detected by said bubble detecting means, carries out a control operation in which the liquid with which said spray tank is filled is drained, and said spray tank is refilled with a liquid. 3. A liquid spraying apparatus according to claim 2, wherein said residual bubble prevention and control means is a control operation which removes the residual bubbles by decreasing the pressure of the liquid with which said spray tank is filled. 4. A liquid spraying apparatus in which a nozzle plate is provided at a portion of a lower wall surface of a spray tank which stores a liquid therein, the nozzle plate has a row of nozzles made up of a plurality of nozzle holes through which the liquid is sprayed when the nozzle plate is reciprocated, comprising: a bubble detecting means which, when said spray tank is filled with the liquid, detects whether or not residual bubbles exist inside said spray tank; and residual bubble prevention and control means which, when receiving a signal indicating that an existence of residual bubbles has been detected by said bubble detecting means, drains said residual bubbles; wherein said bubble detecting means detects the existence of residual bubbles by monitoring the internal portions of said spray tank by using a monitoring camera, at least one portion of said spray tank being formed from a transparent member, and said monitoring camera viewing an internal portion of said spray tank from at least a side end wall surface of said spray tank, through said transparent member. 5. A liquid spraying apparatus in which a nozzle plate is provided at a portion of a lower wall surface of a spray tank which stores a liquid therein, the nozzle plate has a row of nozzles made up of a plurality of nozzle holes through which the liquid is sprayed, is reciprocated, comprising: a bubble detecting means which, when said spray tank is filled with the liquid, detects whether or not residual bubbles exist inside spray tank; and residual bubble prevention and control means which, when receiving a signal indicating that an existence of residual bubbles has been detected by said bubble detecting means, carries out a control operation in which the liquid with said spray tank is filled is drained, and said spray tank is refilled with a liquid; wherein said bubble detecting means detects the existence of residual bubbles by monitoring the internal portions of said spray tank by using a monitoring camera, at least one portion of said spray tank being formed from a transparent member, and said monitoring camera viewing an internal portions of said spray tank from at least a side end wall surface of said spray tank, through said transparent member.
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