# US 10,245,855 B2 · Photo printer

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- Number: US 10,245,855 B2
- Document ID: US10245855B2
- Status: Granted
- Kind: B2
- Application number: 15/652,819
- Filed: 2017-07-18
- Published: 2018-01-25
- Granted: 2019-04-02
- Earliest claimed: 2016-07-21
- Assignees: Ds Global
- Applicants: Ds Global
- Inventors: Hee Pil Yoon
- Web page: https://patentgrep.com/patent/US10245855B2

## CPC

- B41J 11/14: Platen-shift mechanisms; Driving gear therefor
- B41J 2/32: using thermal heads
- B41J 2/525: Arrangement for multi-colour printing, not covered by group B41J2/21, e.g. applicable to two or more kinds of printing or marking process
- B41J 11/04: Roller platens
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS

## Abstract

Provided is a photo printer including: a base adapted to accommodate paper therein; a pickup roller protruding from the bottom of the base to feed the paper accommodated in the base forwardly; a platen roller disposed in front of the base to discharge the paper fed by the pickup roller forwardly; a head located above the platen roller to apply given heat to the paper; a motor; a transgear engaged with the motor; a first power transfer part for connecting the transgear and the rotary shaft of the platen roller with each other to rotate the platen roller; and a second power transfer part for connecting the transgear and the rotary shaft of the pickup roller with each other to rotate the pickup roller. The transgear, the first power transfer part and the second power transfer part are disposed on the same side surface of the base as each other.

## Claims

### Claim 1

A photo printer for applying given heat to paper responding to the given heat to express given colors so as to print images or texts, the photo printer comprising:
a base adapted to accommodate a paper therein;
a pickup roller protruding from a bottom of the base to feed the paper accommodated in the base forwardly;
a platen roller disposed in front of the base to discharge the paper fed by the pickup roller forwardly;
a head located above the platen roller to apply given heat to the paper;
a motor;
a transgear engaged with the motor;
a first power transfer part for connecting the transgear and a rotary shaft of the platen roller with each other to rotate the platen roller; and
a second power transfer part for connecting the transgear and a rotary shaft of the pickup roller with each other to rotate the pickup roller,
wherein the transgear, the first power transfer part and the second power transfer part are disposed on a same side surface of the base as each other, and
wherein the second power transfer part comprises:
a clutch gear adapted to receive a rotary force of the transgear and having a first protrusion formed on one side thereof; and
a clutch coupled to the rotary shaft of the pickup roller and having a second protrusion locked onto the first protrusion to transfer the rotary force of the transgear to the pickup roller.

### Claim 2 (depends on 1)

The photo printer according to claim 1, wherein between the clutch gear and the clutch are disposed at least one or more idle gears each having third and fourth protrusions formed on both sides thereof.

### Claim 3 (depends on 1)

The photo printer according to claim 1, further comprising a swing bracket having a mounting portion formed at a front side thereof in such a manner as to be coupled to the head and coupling portions formed at a rear side thereof in such a manner as to be rotatably coupled to the base to allow the head to swing; and
pressurizing means adapted to pressurize the head downwardly to allow the head to come into close contact with the paper advancing into a space between the head and the platen roller.

### Claim 4 (depends on 3)

The photo printer according to claim 3, wherein the pressurizing means comprises:
a pressurizing bracket having a pressurizing portion formed at a front side thereof in such a manner as to be located above the head and the coupling portions formed at the rear side thereof in such a manner as to be rotatably coupled to the base; and
elastic members adapted to pull the pressurizing portion downwardly.

### Claim 5 (depends on 1)

The photo printer according to claim 1, further comprising a paper pressurizing member adapted to pressurize the paper downwardly to allow the paper accommodated in the base to come into close contact with the pickup roller, the paper pressurizing member being coupled to top surfaces of side walls of the base in such a manner as to be inclined downwardly toward the pickup roller protruding from the bottom of the base.

### Claim 6

A photo printer for applying given heat to paper responding to the given heat to express given colors so as to print images or texts, the photo printer comprising:
a base adapted to accommodate a paper therein;
a pickup roller protruding from a bottom of the base to feed the paper accommodated in the base forwardly;
a platen roller disposed in front of the base to discharge the paper fed by the pickup roller forwardly;
a head located above the platen roller to apply given heat to the paper;
a swing bracket having a mounting portion formed at a front side thereof in such a manner as to be coupled to the head and coupling portions formed at a rear side thereof in such a manner as to be rotatably coupled to the base to allow the head to swing;
pressurizing means adapted to pressurize the head downwardly to allow the head to come into close contact with the paper advancing into a space between the head and the platen roller;
a motor;
a transgear engaged with the motor;
a first power transfer part for connecting the transgear and the rotary shaft of the platen roller with each other to rotate the platen roller; and
a second power transfer part for connecting the transgear and the rotary shaft of the pickup roller with each other to rotate the pickup roller,
wherein the transgear, the first power transfer part and the second power transfer part are disposed on a same side surface of the base as each other.

### Claim 7 (depends on 6)

The photo printer according to claim 6, wherein the second power transfer part comprises:
a clutch gear adapted to receive a rotary force of the transgear and having a first protrusion formed on one side thereof; and
a clutch coupled to the rotary shaft of the pickup roller and having a second protrusion locked onto the first protrusion to transfer the rotary force of the transgear to the pickup roller.

### Claim 8 (depends on 7)

The photo printer according to claim 7, wherein between the clutch gear and the clutch are disposed at least one or more idle gears each having third and fourth protrusions formed on both sides thereof.

### Claim 9 (depends on 6)

The photo printer according to claim 6, wherein the pressurizing means comprises:
a pressurizing bracket having a pressurizing portion formed at a front side thereof in such a manner as to be located above the head and the coupling portions formed at the rear side thereof in such a manner as to be rotatably coupled to the base; and
elastic members adapted to pull the pressurizing portion downwardly.