IP Library Granted Patent US 11,840,065
Granted Patent B2
US 11,840,065 · App. 16/751,263 · Granted Dec 12, 2023

Inkjet printer

Inventor: Chihiro Sakai (Hamamatsu, JP)
Assignee: ROLAND DG CORPORATION
B41J11/057B41J11/706B65H29/20B65H35/04B65H2404/182
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Quick Facts
Patent No.
US 11,840,065
App. No.
16/751,263
Granted
Dec 12, 2023
Kind
B2
Abstract

A printer includes a platen on which a recording medium is placed, an ink head including a nozzle that discharges ink onto the recording medium placed on the platen and that moves in a main scanning direction, an upstream guide located on an upstream side of the platen in a secondary scanning direction and that guides the recording medium, the upstream guide including an upper surface tilted obliquely downward from a downstream side to the upstream side in the secondary scanning direction, and grit rollers provided in the platen and that move the recording medium in the secondary scanning direction. The upstream guide is recessed from the upper surface of the upstream guide, and includes a concave recess that indicates a position of each of the grit rollers in the main scanning direction so that a position of the grit roller is easily acknowledged when the recording medium is placed on the platen.

Claims (30)

1. An inkjet printer comprising:

a platen that receives a recording medium thereon;

an ink head including a nozzle that discharges ink onto the recording medium placed on the platen and that moves in a main scanning direction;

a guide located on an upstream side of the platen in a secondary scanning direction perpendicular to the main scanning direction and that guides the recording medium toward the ink head, the guide including an upper surface tilted obliquely downward from a downstream side of the platen to the upstream side of the platen in the secondary scanning direction; and

a grit roller provided in the platen and that moves the recording medium placed on the platen in the secondary scanning direction; wherein

the guide includes at least one concave recess that is recessed from the upper surface of the guide;

the at least one concave recess indicates a position of the grit roller in the main scanning direction;

the at least one concave recess includes a first concave recess and a second concave recess;

the first concave recess indicates a first position at a first end of the grit roller in the main scanning direction; and

the second concave recess indicates a second position at a second end of the grit roller in the main scanning direction.

2. The inkjet printer according to claim 1 , wherein

the first concave recess is located between the first end of the grit roller and the second end of the grit roller in the main scanning direction; and

the second concave recess is located between the first end of the grit roller and the second end of the grit roller in the main scanning direction.

3. The inkjet printer according to claim 1 , wherein

each of the first concave recess and the second concave recess has a triangular shape; and

an apex of the first concave recess opposes an apex of the second concave recess.

4. The inkjet printer according to claim 1 , further comprising:

a pinch roller located above the grit roller and that holds the recording medium between the pinch roller and the grit roller;

a holding shaft that supports the pinch roller; and

a lever that controls the holding shaft to pivot and move the pinch roller away from or towards the grit roller; wherein

when seen from the upstream side in the secondary scanning direction, the first concave recess and the second concave recess are located above the lever.

5. An inkjet printer comprising:

the inkjet printer according to claim 1 ; and

a cutting head; wherein

the cutting head includes a cutter that moves in the main scanning direction to cut the recording medium on the platen.

6. The inkjet printer according to claim 1 , further comprising:

a second grit roller spaced apart from the grit roller in the main scanning direction; wherein

the at least one concave recess further includes a third concave recess and a fourth concave recess;

the third concave recess indicates a first position at a first end of the second grit roller in the main scanning direction; and

the fourth concave recess indicates a second position at a second end of the second grit roller in the main scanning direction.

Assignments (2)
MERGER AND CHANGE OF NAME Recorded Feb 25, 2025
From: ROLAND DG CORPORATION; XYZ CORPORATION
To: ROLAND DG CORPORATION
Reel/Frame 070314/0344 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 29, 2020
From: SAKAI, CHIHIRO
To: ROLAND DG CORPORATION
Reel/Frame 051658/0402 →
Priority Claims (1)
JP 2019-011108 · Jan 25, 2019 · national
Continuity (1)
Related Publication 20200238732A1 · Jul 30, 2020