JPS6322654A - Charge deflecting type ink jet recorder - Google Patents

Abstract

PURPOSE:To make regeneration restoration possible by simply replacing parts and to enable users to maintain the title recorder, by a method wherein not less than two components are stored in one module, the inflow port of ink and its recovery port from a gutter are provided downward, and they are so constructed as to be able to be inserted into the said recorder body from upward. CONSTITUTION:The parts composing a head module 2 are assembled by a head 3, a charging electrode 5, a deflecting electrode 6, and a gutter 7 with a module base 12 as a reference and the intrusion of dust and mist from outside is prevented by a module cover 16. An ink inflow port 20, an ink recovery port 21, a head drive terminal 17, a charging electrode terminal 18, a deflecting electrode terminal 19, etc. are provided to the head module 2. For replacing the module, individual connections of a fluid system and an electric system are not carried out, but they can be collectively connected.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a charge deflection type inkjet recording device, and more particularly to improvements in an inkjet head section, a charging section, and a deflection section in a charge deflection type inkjet recording device.

L rice length! FIG. 6 is a main part configuration diagram for explaining an example of a conventional charge deflection type inkjet recording device. In the figure, 31 is an inkjet ejection head, 32 is a charging electrode, 33 is a complementary electrode, 34 is a gutter, 35 is the carriage upper plate, 36.37
38 is a pump, and 38 is an ink tank. As is well known, ink droplets ejected from the inkjet ejection head 31 are charged by a charge f8 electrode 32 according to a charge information signal, and the charged ink droplets are deflected by a deflection electrode 33. The ink droplets are deflected according to the amount of charge and printed on recording paper (not shown), and the ink droplets that are not used for recording are allowed to travel straight without being charged to the gutter 34.
The collected ink is collected by a pump 36 into three sides of the ink tank, and the collected ink is further returned to the inkjet ejection head 31 by a pump 37 for reuse. The above-mentioned conventional charge deflection type inkjet recording device is as follows.

Inkjet ejection head 31. Since the deflection electrode 33, the gutter 34, etc. are disposed separately on the carriage upper plate 35, printing may be affected by clogging, adhesion of dust to the electrodes, dry fixation of ink, etc., which are the most common problems in the market. Every time a quality defect occurred, a service person would be called, and when replacing the head due to a clogged nozzle, the service person would adjust and set the injection direction and excitation voltage, which changed for each head.

Furthermore, Japanese Patent Publication No. 55-47595 discloses a pump and an inkjet ejection head on a carriage.

A charged deflection type inkjet recording device in which components such as deflection electrodes are connected by tubes and lead wires has been disclosed, but in such an inkjet recording device,
User replaces parts.

It is impossible to perform maintenance.

The present invention was made in view of the above-mentioned circumstances.
In particular, in a charged deflection type inkjet recording device, it is possible to restore playback by simply replacing parts by the user, and furthermore, the head part, the charged electrode part, the deflection electrode part, and a part of the backlash are configured as one module. This was done with the purpose of allowing users to perform maintenance.

In order to achieve the above object, the present invention includes two or more components such as an inkjet head, a charging electrode, a deflection electrode, and a gutter on a carriage in one module. The module has an ink inflow port and a collection port from the gutter at the bottom, and is configured to be insertable into the inkjet recording apparatus main body from above, and a charging electrode on the carriage. Deflection electrode.

Main components such as a gutter are arranged, and the inkjet head is configured in a removable cassette whose ejection position relative to the electrode and the gutter can be adjusted, and the cassette controls the excitation and temperature control of the inkjet head. The device is characterized in that it has a take-out part for taking out electrical signals, and a connector part for taking out electrode signals on the carriage.

The following will explain one embodiment of the present invention.

FIG. 1 is an overall configuration diagram for explaining one embodiment of the present invention, in which 1 is a carriage cover, 2 is a head module, 3 is an inkjet head, 4 is an ink supply joint, 5 is a charging electrode, 6 is a deflection electrode, 7 is a gutter, 8
is the platen, 9 is the recording paper, 10 is the ink cartridge,
11 is a carriage shaft, 12 is a carriage upper plate, 1
3 is a pump pressurizing unit, 14 is an ink jet direction adjustment mechanism,
Main functional components such as the head module 2 and the ink cartridge 10 are mounted on the carriage upper plate 12.

FIG. 2 is an exploded view of the head module 2 shown in FIG. 1, and in the figure, 15 is a module base.

16 is a module cover, 17 is a head drive terminal, 18
19 is a charging electrode terminal, 19 is a deflection electrode terminal, and the parts constituting the head module 2 are the head 3. Charged electrode5. Deflection electrode 6. It is assembled by the gutter 7, and furthermore, by the module cover 16, dust from the outside is removed.

It is assembled to prevent mist from entering. The head module 2 also includes an ink inlet 20°, an ink collection port 21. And a hollow drive terminal 17 as an electrical connection part.
．． Charged electrode terminal 18. Deflection@pole terminal 19 etc. are provided. Therefore, with the above configuration, module replacement can be performed in a unified manner without having to connect the fluid system and the electrical system separately.

3 and 4 show electrical connection terminals 17 to 1, respectively.
9 is the side (FIG. 3) or top (FIG. 4), and shows the side in which short circuits due to ink spills when 1 is attached and detached are prevented by changing the connection direction of the fluid system and the electrical system.

Therefore, according to the above embodiment, since the ink ejection direction and head excitation voltage are adjusted within the module, the user can replace the module without calling a serviceman in case of printing failure due to nozzle clogging or dust. You can restore playback by just

Further, in the inkjet recording apparatus shown in FIG. 1, the inkjet head 3. The main components such as the deflection electrode 6° and the ink cartridge 10 are mounted on the carriage upper plate 12, but among these, the most common problems in the market are head clogging and changes in the ejection direction. Conventionally, when a service person went to replace the head when a problem occurred, the adjustment was made by adjusting the height relative to the gutter, the horizontal injection direction, and the excitation voltage, which differs for each head, using the adjustment volume on the device body.

In this way, in the conventional device, there are two adjustment points and special equipment is required for adjustment.
It was impossible for the user to replace the head.

FIG. 5 is a main part configuration diagram for explaining another embodiment of the present invention. In this embodiment, in order to eliminate these drawbacks, (1) the ink inlet 20 is directed downward and the ink is inserted. It is possible to connect only by

(2) The electrical signal system can be connected by simply inserting the head cassette through the connector 22.

(3) The injection direction is adjusted in advance by the adjustment mechanism 14 in an inspection process before shipping.

(4) The excitation voltage of the head is adjusted within the process by having an excitation adjustment volume 23 inside the head cassette.

In this embodiment, the above-mentioned configuration eliminates the need for adjustment of the replacement part, so that the user can replace the replacement part by himself/herself without relying on a service person.

In the embodiment shown in FIG. 5, 22 is an electric connector and 23 is an excitation voltage adjustment volume, but in this embodiment, in order to minimize the number of replacement parts, the charging electrode 5 is
is excluded.

As is clear from the above description, according to the present invention, the user can easily replace parts of the head and reproduce the problem in response to nozzle clogging or changes in the ejection direction, which are the most common troubles in inkjet recording devices. It can be made possible to return.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram for explaining an embodiment of an inkjet recording apparatus according to the present invention, and FIG. 2 is an exploded configuration diagram of a module section shown in FIG. 1. Figures 3 and 4 are external views of the module section, respectively;
FIG. 5 is a block diagram of main parts for explaining another embodiment of the present invention, and FIG. 6 is a schematic diagram of main parts for explaining an example of a conventional inkjet recording apparatus. DESCRIPTION OF SYMBOLS 1... Carriage cover, 2... Head module, 3... Head, 4... Ink supply joint, 5
...Charging electrode, 6... Deflection electrode, 7... Gutter,
8...Platen, 9...Recording paper 1.10...Ink cartridge, 11...Carriage shaft, 12
... Carriage upper plate, 13 ... Pump pressurizing part, 14
... Injection direction adjustment mechanism, 15... Module base, 16... Module cover, 17... Head drive terminal, 18... Load w1 electrode terminal, 19... Deflection electrode terminal, 2o... - Ink supply port, 21... Ink collection port, 22... Connector, 23... Excitation voltage adjustment volume. Figure l Figure q Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (2)

[Claims] (1) Two or more components such as an inkjet head, a charging electrode, a deflection electrode, and a gutter are housed in one module on a carriage, and in the module, an ink inlet and a gutter are installed. 1. A charge deflection type inkjet recording device, characterized in that the charge deflection type inkjet recording device has a collection port in the downward direction and is configured to be insertable into the main body of the inkjet recording device from above. (2) Main components such as a charging electrode, a deflection electrode, and a gutter are arranged on the carriage, and the inkjet head is configured as a removable cassette whose ejection position relative to the electrode and gutter can be adjusted. A charge deflection type inkjet recording device, wherein the cassette has an electric signal extraction section for exciting and temperature control of the inkjet head, and a connector section for extracting an electrode signal on the carriage.