Incremental printing of symbolic information – Ink jet – Medium and processing means
Reexamination Certificate
1994-09-29
2004-03-16
Hallacher, Craig (Department: 2853)
Incremental printing of symbolic information
Ink jet
Medium and processing means
C347S015000, C347S100000
Reexamination Certificate
active
06705717
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an ink-jet printing apparatus and a printing method to be employed therein for performing printing on a common paper or OHP sheet (transparent sheet having an ink receptacle layer) under a reference printing condition, or a production method of an ink-jet printed article obtained through printing. More specifically, the invention relates to a printer and a printing system which is capable of printing on a common paper and a cloth.
2. Description of the Related Art
Associating with spreading of information processing apparatus, such as copy machines, wordprocessors, computers and so forth and communication apparatus, an ink-jet type printing apparatus are spread as one of apparatus for outputting images processed by the systems set forth above. This type of printing apparatus employs an ink-jet head for forming ink dot on a printing medium to perform digital printing. Many of such apparatus has a printing mode for performing printing employing a transparent sheet with an ink receptacle layer, i.e. so-called OHP sheet as the printing medium. In this mode, in comparison with printing on the common paper, with respect to a black ink, for example, twice greater amount is ejected toward the OHP sheet.
On the other hand, a dedicated ink-jet textile printing apparatus have been put into practical use. In such textile printing apparatus, it becomes possible to produce high precision and high density printing clothes employing dedicated ink-jet recording heads specifically adapted for the textile printing. However, this kind of ink-jet textile printing apparatus are all adapted for industrial application and not for the personal use to permit the user for easily printing. For instance, Japanese Patent Application Laying-open No. 55277/1986 discloses an ink-jet textile printing apparatus dedicated for industrial textile printing. In the disclosed apparatus, a cloth for ink-jet printing containing substantially non-exhaustive compound to the dye as an elemental material of the cloth in a content of 0.1 to 50 Wt % is employed for preventing bleeding of ink in the cloth.
In contrast to this, in the printing apparatus for performing printing on the common paper, there has been proposed apparatus which can perform printing on the clothes Reference is made to commonly owned Japanese Patent Application Laying-open No. 53492/1987. In the above-identified commonly owned publication, there are disclosed a step of forming a recording liquid (ink) receptacle layer having viscosity higher than or equal to 1 Pa s at 25 ° C. in the cloth, overlaying the cloth with such printing liquid receptacle layer with a paper and instantly setting the overlaid cloth and paper in the ink-jet printer, and performing printing, and a step of iron fixing the printed cloth and thereafter removing the printing liquid receptacle layer by using neutral detergent to obtain the printed product. This proposal also employs dedicated printing medium with improved ink receptacle layer to permit image of a predetermined density with achieving enhanced resolution and prevention of blurring and bleeding.
Also, Japanese Patent Application Laying-open No. 61183/1990 discloses an invention for improvement of the cloth per se with paying attention to a difference between the ordinary printing medium, such as the common paper, to be employed in normal printing and cloth, as printing medium. In order to increase surface density in the cloth in performing ink-jet printing, and thus for the purpose of increasing residual ratio of coloring agent of ink in the cloth, a coating layer is formed by coating a non-exhaustive high polymer compound on the whole cloth or the surface of the cloth to be printed, another coating layer is formed on the surface opposite to that to be printed by coating a high polymer compound for preventing ink from flowing out through this surface and whereby increasing residual rate of the ink on the cloth.
In the conventional industrial textile printing as set forth above, the ink-jet head and the apparatus per se can be dedicatedly set adapting to the characteristics of the cloth to be employed. Also, dedicated ink adapted to the ink receptacle layer in the cloth can be prepared (for instance, employing a reactive dye ink). Furthermore, in the industrially performing textile printing, it is not necessary to perform ink-jet printing on the plain paper. Therefore, the apparatus can be used under freely set conditions in consideration of only textile printing.
While the common characteristic construction of the conventional textile printing apparatus is that the diffusion of ink in the cloth is suppressed by the ink receptacle layer for achieving desired density, it can merely achieve improvement of the image quality in the extent that the density of the image to be formed by the ink is maintained by concentrating the ink at the predetermined position. However, such construction is to suppress diffusion of ink and whereby concentrate the ink at predetermined position to maintain the desired density, but cannot achieve further higher density.
On the other hand, the printing apparatus normally available in the market and set primarily for printing on the common paper and so forth employing the ink-jet technology, can perform precise and fine printing on the basis of a color image data transmitted from a host system, and thus is useful for a compact and inexpensive color ink-jet printing apparatus. The ink to be employed in such printing apparatus is normally prepared employing dye or pigment, e.g. direct dye, adapted for printing on the common paper In the OHP printing mode as selective mode in the printing apparatus available in the market, which is set primarily for the paper, such as plain paper, twice greater amount of ink than the printing on the plain paper in the predetermined area is ejected for emphasizing black. Accordingly, when printing on the cloth is performed by means of the conventional field printing apparatus set for the common paper or so forth as the printing medium as disclosed in Japanese Patent Application Laying-open No. 53492/1987, the printed image quality should have been excellent in the light of the technical level at the time of application, it cannot achieve satisfactorily high density and high quality of printed image.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide an ink-jet printing apparatus, a printing system which can print on both of cloth and paper, with high density and high printed image quality superior to the conventional level of image quality in a field printer device set in view of printing on paper, such as a common paper as a printing medium, an ink to be employed in the system set forth above, and a method for producing a product to be produced with employing the system set forth above.
Another object of the present invention is to provide an ink-jet printing apparatus, with which a user can easily print precise and fine image on a cloth utilizing characteristics of existing general purpose ink-jet printing apparatus and with solving the problems of difference of ink absorbing condition due to difference of fibrous tissue and surface configuration, and difference of coloring characteristics between the paper and the cloth.
A further object of the present invention is to solve the problem in the prior art and to provide a printing system which enables to optimally utilize characteristics of the ink-jet printing in printing on the cloth and the paper by providing printing condition effective for adaption to difference of ink absorbing condition and coloring characteristics of the cloth due to difference of fibrous tissue and surface configuration and without requiring improvement of the ink receptacle layer in the cloth, for the field printing apparatus set typically for paper, such as the common paper and so forth.
A still further object of the present invention is to provide a printing system which enables to optimally utilize characteristics of the ink-jet
Akiyama Yuji
Fujita Miyuki
Haruta Masahiro
Hirabayashi Hiromitsu
Koike Shoji
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