JPS61255871A - Printer - Google Patents

Abstract

PURPOSE:To make easy printing possible, by a method wherein the electrode forming a printing pattern on the screen provided between the ink roller and the material to be printed is arranged, further, a conductive member is installed on the ink roller and discharged between the electrode and the conductive member, holes are bored in the screen arranged between both ones and the printing pattern is formed. CONSTITUTION:A stainless mesh is fixed onto the outer periphery of an ink roller 1 as a conductive member 2. When a voltage of 10,000 volt level is applied between the electrode 4 and the conductive member 2, electricity is discharged between both materials and holes 6 are bored in the screen 3 for musec order to form a printing pattern. At the time when the screen 3 has contacted with the material 7 to be printed by revolution of the ink roller 1, ink 8 oozes out to the material 7 to be printed through the hole 6 of printing pattern formed on the screen 3 from the ink roller 1 and the printing is carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printer that electrically forms a screen.

[Summary of the invention]

In the present invention, an electrode for forming a printing pattern is placed on a screen placed between an ink roller and a substrate to be printed, and a conductive member is further installed on the ink roller, and a discharge is caused between the electrode and the conductive member. The holes in the placed screen allow for easy printing by forming a printing pattern.

[Prior art]

Conventionally, in the case of a printer that prints using a screen, a printing pattern is formed on the screen in advance by a photographic method or the like, and printing is performed by placing the screen on the printer.

[Problem that the invention seeks to solve]

Therefore, a separate operation and device for forming the print pattern are required. Furthermore, there is a problem in that the screen on which the printed pattern is formed needs to be handled with care.

[Means for solving problems]

In order to solve the above problems, the present invention disposes an electrode for forming a printing pattern on a screen disposed between an ink roller and a substrate to be printed, furthermore, a conductive member is installed on the screen, and the electrode and conductive member are disposed on the screen. A discharge was caused between the two, and holes were formed in the screen placed between the two to form a printed pattern, making it easy to print.

[For production]

When printing with a printer configured as described above, it is possible to form a print pattern on the screen even if the screen on which the print pattern has not been formed is installed in the printer, and the print pattern is printed immediately. There is no problem in handling the screen, and printing is easy.

〔Example〕

The details of the present invention will be explained below based on examples.

FIG. 1 shows an embodiment of the present invention, in which reference numeral 1 is an ink roller impregnated with ink, porous rubber or the like is used, and the outer periphery is 411! A stainless steel mesh is attached as member 2. Stainless steel mesh is generally used for screen printing, and has a wire diameter of 20 m and an opening area of about 40 μm x 40 μm. Reference numeral 6 denotes a screen using a thin film of oil paper, polyester, etc., and an electrode 4 for forming a printed pattern on the screen 3, so that the screen 3 is sandwiched between the electrode 4 and an ink roller 9 and a conductive member 2. In order to increase the printing speed, a large number of terminals are provided in columns 5 so that a printing pattern for one line can be formed at a time. This is a so-called line printer. A flexible connector 5 is connected to the electrode 4 to connect the electrode 4t- to a source. When a voltage of about 10,000 volts is applied between the pole 4 and the conductive member 20, a discharge occurs, and the period of μsec
Holes 6 are made in the screen 3 in the order of , and a printing pattern is formed. When the ink roller 1 rotates and the screen 3 comes into contact with the printing material 6, the ink 8 from the ink roller passes through all the holes 6 of the printing pattern formed on the screen 5 and onto the printing material 7, generally paper. It bleeds onto OHP sheets, OHP sheets, etc. and is printed.

FIG. 2 shows a second embodiment of the present invention.
! Pole 4 has several to f several terminals,
This is a so-called serial printer in which the electrode 4 and the conductive member 2 are repeatedly discharged while the electrode is moved from one end of the screen 3 to the other end to form the entire printed pattern on the screen 3. According to this embodiment, since the electrode structure and power supply circuit are simplified, the device does not become smaller and the cost is reduced.

FIG. 3 shows a third embodiment of the present invention, in which conductive members 2 are scattered in or on the ink roller 3. According to this embodiment, when manufacturing the ink roller 3, the conductive member 2 is mixed at the raw material stage, or OV D (Chem-1 cal v'apor
Since it can be easily manufactured by applying the conductive member 2 to the surface of the ink roller 3 using a spray method such as the Deposition method, it is possible not only to reduce the price but also to have a large degree of freedom in shape.

〔Effect of the invention〕

As described above, according to the present invention, a printing pattern can be formed using a single printhead placed on a screen placed between an ink roller and a substrate to be printed. Therefore, there is no need to separately prepare a device to form a printing pattern.
Not only is the printing system smaller, but the printing cost is also lower, and there is no need to worry about handling the screen on which the printing pattern is formed. Furthermore, since the printing pattern is printed immediately after it is formed, a high-speed printer can be obtained. In particular, it is extremely fast because it utilizes the discharge phenomenon.

[Brief explanation of the drawing]

Figure 1 (■ (b) is a perspective view of the main part of the device and a partially enlarged sectional view, respectively, showing one embodiment of the present invention, Figures 2 and 3 are
The figures are perspective views of essential parts showing other embodiments of the present invention, respectively.
FIG. 3 is a perspective view of an ink roller. 1... Ink roller 2... Conductive member 3... Screen 4... Electrode 5... Flexible connector 6... Hole 7... Printing material 8... Ink 9... Electrode movement Applicant: Seiko Hiroko Industries Co., Ltd. (a) (b) Figure 1 showing part # of the present invention

Claims (1)

[Claims] In a printer that prints by placing a screen on which a printing pattern is formed between an ink roller containing ink and a substrate, a conductive member is installed on the ink roller, and the screen is , a printer which is sandwiched between an electrode placed adjacent to the ink roller and the ink roller, and is destroyed by electric discharge between the electrode and the conductive member of the ink roller to form a printed pattern.