Coating apparatus and inkjet recording apparatus
A coating equipment and coating technology, which are applied to the device, coating, printing and other directions of coating liquid on the surface, which can solve the problem that the treatment cannot be continuously performed in response, cannot prevent the scattering and dripping of the treatment liquid, and the scattering of the treatment liquid. and drips cannot be caught, etc.
Inactive Publication Date: 2013-09-25
FUJIFILM CORP
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[0006] However, Japanese Patent Application Laid-Open No. 2011-062831 has the following disadvantages: although the scattering and dripping of the treatment liquid from the supply roller can be prevented, the scattering and dripping of the treatment liquid from the coating roller cannot be prevented
That is, accumulation of treatment liquid also occurs on the coating roll, as on the supply roll, but since the coating liquid container is not arranged below any end of the coating roll, there is the disadvantage that the treatment from the coating roll Liquid spills and drips cannot be caught in the coating liquid container
Then, the composition described in Japanese Patent Application Laid-Open No. 2011-062831 also has a drawback of being unable to respond to a situation where processing is continuously performed over a long period of time, or processing is performed at a high speed.
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[0048] Overall Composition of Inkjet Recording Apparatus
[0049] figure 1 is an overall schematic diagram of an inkjet recording apparatus including a coating apparatus.
[0050] The inkjet recording apparatus 10 is configured to record an image on general-purpose printing paper (cut sheets of paper) by an inkjet method using aqueous ink (ink containing water as a solvent). When an image is recorded on a general-purpose printing paper by an inkjet method using an aqueous ink without any processing, it is impossible to record a high-quality image due to the occurrence of feathering, bleeding, and the like. Therefore, in such an inkjet recording apparatus, image recording is performed after coating is performed on paper with a prescribed treatment liquid. More specifically, image recording is performed after applying a liquid having a function of condensing coloring material components in the ink. The inkjet recording apparatus is provided with a coating apparatus for this...
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A coating apparatus includes: a coating roller configured to apply a coating liquid to an object to be coated; a supply roller configured to supply the coating liquid to the coating roller, wherein: the supply roller has a circumferential surface of which a width is larger than a width of a circumferential surface of the coating roller, the circumferential surface of the supply roller has a contact region configured to make contact with the coating roller and non-contact regions configured not to make contact with the coating roller, the contact region has a surface state different from a surface state of the non-contact regions such that a flow velocity of the coating liquid flowing on the non-contact regions is faster than a flow velocity of the coating liquid flowing on the contact region; and a coating liquid supply device configured to supply the coating liquid to the supply roller.
Description
technical field [0001] The present invention relates to a coating device, and more particularly to a coating device incorporated in an inkjet recording device and which coats paper with a prescribed treatment liquid. Background technique [0002] Can be compared with generic printing paper (plain paper used in ordinary offset printing, etc. (ie, paper having cellulose as a main component such as premium paper) by coating the paper with a prescribed treatment liquid before printing (top grade paper, coated paper, art paper, etc.), rather than dedicated inkjet paper) are known. An inkjet recording apparatus of this kind is provided with a coating apparatus that applies a prescribed treatment liquid to paper prior to printing. [0003] The coating apparatus can use various methods such as a method of applying a liquid by spraying (spray application method), a method of applying liquid using an inkjet head (inkjet application method), etc., and a method of applying liquid by us...
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IPC IPC(8): B41J11/00
CPCB41J11/0015B05C1/0834B41J2/01
Inventor 古川源太郎上村宽
Owner FUJIFILM CORP