Claims
- 1. A thermal transfer printer comprising:
- a carriage;
- a motor mounted on the carriage;
- a thermal head mounted on the carriage;
- a roller driving shaft rotatably mounted on the carriage and connected to the motor, said roller driving shaft having an outer circumferential surface having at least one key;
- a windup bobbin drive shaft rotatably mounted on the carriage and connected to the motor;
- an ink ribbon cassette mounted on the carriage, the ink ribbon cassette including:
- a draw-out bobbin and a windup bobbin rotatably connected to and disposed in the ink ribbon cassette, the windup bobbin including an inner surface receiving the windup bobbin drive shaft,
- an ink ribbon having a first end wound on the draw-out bobbin and a second end wound on the windup bobbin, the ink ribbon including a first portion disposed adjacent said thermal head, and
- a cylindrical ribbon feed roller rotatably connected to and disposed in said ink ribbon cassette such that said cylindrical ribbon feed roller contacts a second portion said ink ribbon located between said first portion and said windup bobbin, said cylindrical ribbon feed roller having an inner circumferential surface defining at least one key groove for receiving said at least one key formed on said roller driving shaft;
- wherein the thermal printer does not include an idle roller pressing against the cylindrical ribbon feed roller.
- 2. A thermal transfer printer according to claim 1, further comprising a correction member mounted on said carriage adjacent a third portion of said ink ribbon located between the first portion and the second portion.
- 3. A thermal transfer printer according to claim 1, wherein said feed roller has a cylindrical sleeve and a cover member for covering an outer circumference of the sleeve.
Priority Claims (1)
Number |
Date |
Country |
Kind |
1-144576 |
Jun 1989 |
JPX |
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Parent Case Info
This is a continuation of application Ser. No. 07/497,460, filed Mar. 22, 1990, abandoned.
US Referenced Citations (4)
Foreign Referenced Citations (8)
Number |
Date |
Country |
0126203 |
Nov 1984 |
EPX |
0164488 |
Dec 1985 |
EPX |
0184686 |
Oct 1984 |
JPX |
0063187 |
Apr 1985 |
JPX |
0055183 |
Mar 1987 |
JPX |
0290570 |
Dec 1987 |
JPX |
0054276 |
Mar 1988 |
JPX |
2221653 |
Feb 1990 |
GBX |
Non-Patent Literature Citations (2)
Entry |
Applegate et al, "Motor Drive Arrangement for Ribbon Feed and Printhead Positioning Control", IBM Technical Disclosure Bulletin, vol. 25, No. 11B, Apr. 1983, pp. 6236-6238. |
Molloy et al, "Motor Driven Ribbon Take-Up", IBM Bulletin, vol 27, No. 1B, Jun. 1984, pp. 900-901. |
Continuations (1)
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Number |
Date |
Country |
Parent |
497460 |
Mar 1990 |
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