# US 11,999,163 B2 · Adjusting method for printing apparatus, and a printing apparatus

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- Number: US 11,999,163 B2
- Document ID: US11999163B2
- Status: Granted
- Kind: B2
- Application number: 17/767,660
- Filed: 2020-11-02
- Published: 2024-03-28
- Granted: 2024-06-04
- Earliest claimed: 2020-11-02
- Assignees: SCREEN Holdings Co., Ltd.
- Applicants: Screen Holdings Co., Ltd.
- Inventors: Seiya Nomura
- Web page: https://patentgrep.com/patent/US11999163B2

## CPC

- B41J 2/04551: {using several operating modes}
- B41J 2/04541: {Specific driving circuit}
- B41J 2/0457: {Power supply level being detected or varied}
- B41J 2/04581: {controlling heads based on piezoelectric elements}
- B41J 2/04588: {using a specific waveform}
- B41J 2/0459: {Height of the driving signal being adjusted}
- B41J 29/393: Devices for controlling or analysing the entire machine {; Controlling or analysing mechanical parameters involving printing of test patterns}
- G06K 15/027: {Test patterns and calibration (arrangements for controlling or analysing printing mechanisms of typewriters or selective printing units B41J29/393 takes precedence; colour correction using test pattern analysis in general H04N1/6033)}
- B41J 2029/3935: {by means of printed test patterns}
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS

## Abstract

To provide an adjusting method for a printing apparatus, and the printing apparatus, capable of appropriately adjusting drive voltages of heads even when printing conditions are changed, this invention can appropriately acquire adjusted voltages of the heads even when printing conditions are changed. That is, according to this invention, a construction is configured to change an adjustable range of head drive voltages with a printing mode. This invention acquires the adjustable range corresponding to the printing mode set by referring to a table T1. Consequently, the adjusted voltages of the heads can be determined within the adjustable range suited to each printing mode.

## Claims

### Claim 1

An adjusting method for a printing apparatus which executes printing by dispensing ink droplets from a plurality of nozzle groups to a printing medium, the method comprising:
a step of setting a printing mode concerning an adjustment of the nozzle groups; and
a step of acquiring an adjustable range of drive voltages of the nozzle groups corresponding to the printing mode set based on a table of relationship between each printing mode and the adjustable range.

### Claim 2 (depends on 1)

The adjusting method for the printing apparatus according to claim 1, comprising a step of determining an adjusted value of the drive voltage for each of the nozzle groups based on the adjustable range acquired.

### Claim 3 (depends on 1)

The adjusting method for the printing apparatus according to claim 1, comprising a step of creating a test chart based on the adjustable range acquired.

### Claim 4 (depends on 3)

The adjusting method for the printing apparatus according to claim 3, comprising a step of acquiring a relationship between printing density and the drive voltages based on the test chart.

### Claim 5 (depends on 1)

The adjusting method for the printing apparatus according to claim 1, wherein the printing mode corresponds to a type of ink.

### Claim 6 (depends on 1)

The adjusting method for the printing apparatus according to claim 1, wherein the printing mode corresponds to a purpose of using prints.

### Claim 7 (depends on 1)

The adjusting method for the printing apparatus according to claim 1, wherein the printing mode corresponds to a voltage waveform in time of driving the nozzle groups.

### Claim 8 (depends on 1)

The adjusting method for the printing apparatus according to claim 1, wherein the printing mode corresponds to a speed of printing.

### Claim 9 (depends on 1)

The adjusting method for the printing apparatus according to claim 1, wherein the printing mode corresponds to a temperature of the nozzle groups.

### Claim 10 (depends on 1)

The adjusting method for the printing apparatus according to claim 1, wherein the printing mode corresponds to viscosity of the ink.

### Claim 11

A printing apparatus for executing printing by dispensing ink droplets to a printing medium, comprising:
nozzle groups having nozzles for dispensing the ink droplets, and executing printing by dispensing the ink droplets to the printing medium;
a printing mode setter for setting printing modes concerning adjustment of the nozzle groups; and
an adjustable range setter for acquiring an adjustable range of drive voltages of the nozzle groups corresponding to the printing mode set, based on a table of relationship between each printing mode and the adjustable range.

### Claim 12 (depends on 11)

The printing apparatus according to claim 11, comprising a table memory for storing the table.

### Claim 13 (depends on 2)

The adjusting method for the printing apparatus according to claim 2, comprising a step of creating a test chart based on the adjustable range acquired.