# US 12,005,699 B2 · Recording device

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- Number: US 12,005,699 B2
- Document ID: US12005699B2
- Status: Granted
- Kind: B2
- Application number: 17/549,266
- Filed: 2021-12-13
- Published: 2022-06-16
- Granted: 2024-06-11
- Earliest claimed: 2020-12-16
- Assignees: Seiko Epson Corporation
- Applicants: Seiko Epson Corporation
- Inventors: Tatsuya Hosokawa; Shintaro Komuro; Shota Sakagami; Hiroyuki Maeda; Takamasa Ikagawa; Koji Hara
- Web page: https://patentgrep.com/patent/US12005699B2

## CPC

- B41J 11/007: {Conveyor belts or like feeding devices}
- B41J 3/60: for printing on both faces of the printing material
- B41J 11/0095: {Detecting means for copy material, e.g. for detecting or sensing presence of copy material or its leading or trailing end}
- B41J 29/17: Cleaning arrangements
- B41J 29/38: Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS

## Abstract

A recording device includes a recording unit configured to perform recording to a medium, a conveyance belt disposed facing the recording unit and configured to convey the medium, a first blade and a second blade configured to make contact with the conveyance belt and scrape out a residual of the conveyance belt, and a switching mechanism configured to switch the first blade and the second blade. When the first blade is moved to a first position where the first blade makes contact with the conveyance belt, the control unit moves the second blade to a second position where the second blade is separated from the conveyance belt, and when the second blade is moved to the first position where the second blade makes contact with the conveyance belt, the control unit moves the first blade to the second position where the first blade is separated from the conveyance belt.

## Claims

### Claim 1

A recording device comprising:
a recording unit configured to perform recording by discharging a droplet to a medium;
a conveyance belt disposed facing the recording unit and configured to convey the medium;
a cleaning unit configured to scrape out a residual of the conveyance belt, and including a first blade and a second blade configured to make contact with the conveyance belt and scrape out the residual of the conveyance belt, and a switching mechanism configured to switch the first blade and the second blade; and
a control unit, wherein
after a first predetermined time has elapsed, the control unit moves the first blade to a first position where the first blade makes contact with the conveyance belt and moves the second blade to a second position where the second blade is separated from the conveyance belt,
after a second predetermined time has elapsed, the control unit moves the second blade to the first position where the second blade makes contact with the conveyance belt and moves the first blade to the second position where the first blade is separated from the conveyance belt, and
the first predetermine time and the second predetermined time are equal to each other and obtained by equally dividing a period until implementation of a maintenance of the recording unit.

### Claim 2 (depends on 1)

The recording device according to claim 1, wherein
the switching mechanism is a slide mechanism configured to slide the first blade and the second blade; and
sliding of the first blade and the second blade switches the positions thereof between the first position and the second position.

### Claim 3 (depends on 1)

The recording device according to claim 1, wherein the first blade and the second blade are made of the same material.

### Claim 4 (depends on 1)

The recording device according to claim 1, wherein the second blade is made of a material with a higher rigidity than that of the first blade.

### Claim 5 (depends on 4)

The recording device according to claim 4, wherein the control unit periodically separates the first blade from the conveyance belt, while bringing the second blade with the higher rigidity into contact with the conveyance belt.

### Claim 6 (depends on 1)

The recording device according to claim 1, wherein the first blade and the second blade are disposed in a close contact state.

### Claim 7 (depends on 1)

The recording device according to claim 1, wherein the control unit switches the first blade and the second blade in accordance with a predetermined elapsed time.

### Claim 8 (depends on 1)

The recording device according to claim 1, comprising a surface detection unit configured to detect a surface state of the conveyance belt, wherein
the control unit changes a contact pressure force of the first blade or the second blade against the conveyance belt on a basis of a detection result of the surface detection unit.

### Claim 9 (depends on 1)

The recording device according to claim 1, comprising a temperature/humidity detection unit configured to detect a temperature and a humidity around the conveyance belt, wherein the control unit switches the first blade and the second blade on a basis of a detection result of the temperature/humidity detection unit.