INKJET RECORDING APPARATUS

• US 20120182337A1
• Filed: 09/07/2010
• Published: 07/19/2012
• Est. Priority Date: 09/28/2009
• Status: Active Grant

• Current Assignee: Lanzatech NZ Incorporated (LanzaTech Global, Inc.)
• Original Assignee: Konica Minolta Holdings Incorporated (Konica Minolta Inc.)
• Inventors: Nishi, Yasuo
• Granted Patent: US 8,979,228 B2
• Time in Patent Office: Days
• US Class Current: 347/9
• CPC Class Codes: B41J 11/00214 using UV radiation
• CPC Class Codes: B41J 11/00216 using infrared [IR] radiation or microwaves
• CPC Class Codes: B41J 2/095 electric field-control type
• CPC Class Codes: B41J 2/145 Arrangement thereof
• CPC Class Codes: B41J 2/2128 by means of energy modulation control methods or devices therefor, e.g. driver circuits or control circuits B41J2/04501
• CPC Class Codes: B41J 2/2132 Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding methods for local corrections by dot omission, image edge enhancement, or multi-pass mask selection G06K15/102; colour conversion H04N1/40
• CPC Class Codes: B41J 2002/14459 Matrix arrangement of the pressure chambers
• CPC Class Codes: B41J 29/393 Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns

Abstract

Provided is an inkjet recording apparatus capable of recording a high quality image without limiting the kinds of ink or recording media, including an inkjet head having a plurality of nozzles to eject ink droplets, wherein the ink droplets ejected from the plurality of the nozzles is charged by applying voltage between the inkjet head and the recording medium, and land on the recoding medium so as to record the image on the recording medium, wherein after a first ink droplet lands on the recording medium, a second ink droplet lands on the recording medium so as to overlap with the first ink droplet before discharging of the first ink droplet is completed.

Claims

1. An inkjet image forming apparatus comprising an inkjet head having a plurality of nozzles to eject ink as ink droplets so as to record an image on a recording medium by landing the ink droplets ejected from the plurality of the nozzles onto the recording medium while charging the ink droplets by applying an electrical voltage between the inkjet head and the recording medium, wherein after a first ink droplet lands on the recording medium, a second ink droplet lands on the recording medium so that the second ink droplet overlaps with the first ink droplet before discharging of the first ink droplet is completed.

2. The ink jet image forming apparatus of claim 1, wherein a time period from landing of the first ink droplet and to landing of the second ink droplet is not more than 20 m sec.

3. The ink jet image forming apparatus of claim 1, wherein the plurality of the nozzles are arranged so that distances among ink ejection ports of the nozzles are not less than 170 μ

m.

4. The ink jet image forming apparatus of claim 1, comprising a radiation device to radiate heat or light to the ink droplets landed on the recording medium, wherein the ink is cured by radiating the heat or the light from the radiation device.