# US 9,434,188 B2 · Liquid discharging apparatus

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- Number: US 9,434,188 B2
- Document ID: US9434188B2
- Status: Granted
- Kind: B2
- Application number: 14/735,342
- Filed: 2015-06-10
- Published: 2015-12-24
- Granted: 2016-09-06
- Earliest claimed: 2014-06-18
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Jun Ushiama
- Web page: https://patentgrep.com/patent/US9434188B2

## CPC

- B41J 13/0009: {control of the transport of the copy material}
- B41J 15/00: Devices or arrangements {of selective printing mechanisms, e.g. ink-jet printers or thermal printers,} specially adapted for supporting or handling copy material in continuous form, e.g. webs
- B41J 15/16: Means for tensioning or winding the web
- G03G 2215/00556: Control of copy medium feeding
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY

## Abstract

A liquid discharging apparatus includes a feeding unit that feeds a medium, a feeding driving unit that drives the feeding unit, a liquid discharging unit that performs a discharging operation of discharging a liquid to the medium, and a controller that controls the feeding driving unit to start to operate in synchronization with a timing when the liquid discharging unit finally discharges the liquid in the discharging operation.

## Claims

### Claim 1

A liquid discharging apparatus comprising:
a feeding unit that feeds a medium;
a feeding driving unit that drives the feeding unit;
a liquid discharging unit that performs a discharging operation of discharging liquid to the medium;
a carriage that moves the liquid discharging unit in a scan direction orthogonal to a feeding direction of the medium during the discharging operation;
a reach detecting unit that detects that the liquid discharging unit reaches a position that is a set distance from a final discharging position where the liquid discharging unit finally discharges the liquid in the discharging operation;
a holding unit that holds a roll body around which the medium is wound;
a rotation driving unit that rotates the roll body through the holding unit so that the medium is pulled out from the roll body; and
a controller that controls the feeding driving unit, on the basis of a reach detection by the reach detecting unit, to start to operate in synchronization with a timing when the liquid discharging unit finally discharges the liquid in the discharging operation, which is performed while the carriage is moved at a constant speed, wherein the controller, on the basis of the reach detection by the reach detecting unit, controls the rotation driving unit to start to operate.

### Claim 2 (depends on 1)

The liquid discharging apparatus according to claim 1,
wherein the controller controls the rotation driving unit so that the rotation driving unit starts to operate before starting to operate the feeding driving unit.

### Claim 3 (depends on 1)

The liquid discharging apparatus according to claim 1,
wherein the controller controls the rotation driving unit to start to operate in synchronization with an operation starting of the feeding driving unit.

### Claim 4 (depends on 2)

The liquid discharging apparatus according to claim 2,
wherein the controller controls the feeding driving unit to start to operate after a delay time elapses from the reach detection.

### Claim 5 (depends on 4)

The liquid discharging apparatus according to claim 4,
wherein the controller includes a diameter acquiring unit which acquires a diameter of the roll body, and
wherein the controller changes the delay time based on the diameter of the roll body acquired by the diameter acquiring unit.

### Claim 6 (depends on 4)

The liquid discharging apparatus according to claim 4,
wherein the controller includes a speed setting unit which sets a feeding speed of the medium, and
wherein the controller changes the delay time based on the feeding speed set by the speed setting unit.

### Claim 7 (depends on 4)

The liquid discharging apparatus according to claim 4,
wherein the controller includes a tension setting unit which sets a tension applied to the medium between the roll body and the feeding unit, and
wherein the controller changes the delay time based on the tension set by the tension setting unit.