Recording system

Patent metadata

Field	Value
Publication number	US-11117371-B2
Application number	US-202016773152-A
Country	US
Kind code	B2
Filing date	Jan 27, 2020
Priority date	Jan 30, 2019
Publication date	Sep 14, 2021
Grant date	Sep 14, 2021

Abstract

A recording system records a multi-tone image with liquid droplets of different amount discharged from nozzles. This recording system has a first nozzle and a second nozzle. The minimum amount of a liquid droplet discharged from the first nozzle is larger than the minimum amount of a liquid droplet discharged from the second nozzle.

First claim

What is claimed is:

1. A recording system recording a multi-tone image with liquid droplets of different amount discharged from nozzles, the system comprising:
a first nozzle and a second nozzle,
wherein a minimum amount of a liquid droplet discharged from the first nozzle is larger than a minimum amount of a liquid droplet discharged from the second nozzle, and
wherein the minimum amount of the liquid droplet discharged from the first nozzle is 1.2 times or more the minimum amount of the liquid droplet discharged from the second nozzle, and is less than 1.2 times the maximum amount of the liquid droplet discharged from the second nozzle.

2. The recording system according to claim 1 , wherein in recording with the first nozzle and in recording with the second nozzle, the same number of tone values is used.

3. The recording system according to claim 1 , wherein the first nozzle and second nozzle have the same nozzle diameter.

4. The recording system according to claim 1 , wherein a driving pulse for use for the first nozzle to discharge the liquid droplet from the first nozzle is different from a driving pulse for use for the second nozzle to discharge the liquid droplet from the second nozzle.

5. The recording system according to claim 1 , wherein the first nozzle is used to discharge a first ink, and the second nozzle is used to discharge a second ink, and the second ink has a lower ink concentration than the first ink.

6. The recording system according to claim 1 , wherein:
the ink discharged from the first nozzle is at least any one of a cyan ink, a magenta ink, a yellow ink, and a black ink; and
the ink discharged from the second nozzle is a spot-color ink different from the cyan ink, magenta ink, yellow ink, and black ink.

7. The recording system according to claim 1 , wherein the ink discharged from the first nozzle is less likely to affect granularity during recording than the ink discharged from the second nozzle.

8. A recording system recording a multi-tone image with liquid droplets of different amounts discharged from nozzles, the system comprising:
a first nozzle and a second nozzle; and
a control driver configured to control discharge of the liquid droplets from the first nozzle and second nozzle, according to a recording data, wherein:
a minimum amount of a liquid droplet discharged from the first nozzle is larger than a minimum amount of a liquid droplet discharged from the second nozzle;
both when a first recording data, which is the recording data corresponding to the first nozzle, indicates a first tone value and when the first recording data indicates a second tone value, the control driver causes a second amount of the liquid droplet to be discharged from the first nozzle, the second amount being larger than a first amount; and
when a second recording data, which is the recording data corresponding to the second nozzle, indicates the first tone value, the control driver causes the first amount of the liquid droplet to be discharged from the second nozzle, and when the second recording data indicates the second tone value, the control driver causes the second amount of the liquid droplet to be discharged from the second nozzle.

9. A recording system recording a multi-tone image with liquid droplets of different amounts discharged from nozzles, the system comprising:
a first nozzle and a second nozzle; and
a control driver configured to control discharge of the liquid droplets from the first nozzle and second nozzle, according to a recording data, wherein:
a minimum amount of a liquid droplet discharged from the first nozzle is larger than a minimum amount of a liquid droplet discharged from the second nozzle;
when a first recording data, which is the recording data corresponding to the first nozzle, indicates a first tone value, the control driver causes no liquid droplet to be discharged from the first nozzle, and when the first recording data indicates a second tone value, the control driver causes a second amount of the liquid droplet to be discharged from the first nozzle, the second amount being larger than a first amount; and
when a second recording data, which is the recording data corresponding to the second nozzle, indicates the first tone value, the control driver causes the first amount of the liquid droplet to be discharged from the second nozzle, and when the second recording data indicates the second tone value, the control driver causes the second amount of the liquid droplet to be discharged from the second nozzle.

Assignees

• Seiko Epson Corp

Inventors

• Tsuzuki Masakazu
• Tsubota Shinichi

Classifications

• B41J2/04588 Primary

  using a specific waveform · CPC title

• B41J2/04596

  Non-ejecting pulses · CPC title

• B41J2/2125

  by means of nozzle diameter selection · CPC title

• B41J2/21

  for multi-colour printing · CPC title

• B41J2/04581

  controlling heads based on piezoelectric elements · CPC title