Claims
- 1. A printer for transferring an image onto recording paper that is transported from an input path to a printing position comprising:
- an input means for conveying a sheet of recording paper along said input path;
- a cylindrical platen roller disposed at said printing position and rotatable in at least a first direction of rotation about a longitudinal axis of rotation, said platen comprising a circumferential outer surface sized to hold said paper, said roller being further disposed so that said circumferential outer surface is substantially tangential to said input path as a first circumferential position of said roller;
- a guide member disposed at a second circumferential position of said roller in said first direction of rotation, said guide member comprising a hook-shaped projection which is disposed toward said circumferential outer surface; and
- wherein said hook-shaped projection is formed in the center of the top part of said guide member and is formed with a round contour.
- 2. A printer for transferring an image onto recording paper that is transported from an input path to a printing position, raid printer being operative to localize a paper jam, comprising:
- an input means for conveying a sheet of recording paper along said input path;
- a cylindrical platen roller disposed at said printing position and rotatable in at least a first direction of rotation about a longitudinal axis of rotation, said platen comprising a circumferential outer surface sized to hold said paper, said roller being further disposed so that said circumferential outer surface is substantially tangential to said input path at a first circumferential position of said roller;
- a guide member disposed at a second circumferential position of said roller in said first direction of rotation, said guide member comprising a hook-shaped projection which is disposed toward said circumferential outer surface to localize said paper jam.
- 3. The printer as set forth in claim 2, further comprising a printing head at a printing position disposed at a third circumferential position of said roller, wherein said first circumferential position comprises a paper supplying position at which said recording paper is clamped to said outer surface of said roller and said second circumferential position is disposed between said first circumferential position and said third circumferential position.
- 4. The printer as set forth in claim 2, wherein said second circumferential position is approximately 90 degrees in said direction of rotation from said first circumferential position.
- 5. The printer as set forth in claim 2, wherein said hook-shaped projection is operative to catch a paper which fails to be clamped at said first position and is conveyed in said direction of rotation.
- 6. The printer as set forth in claim 2, wherein said hook-shaped projection is formed in the center of top part of said guide member.
- 7. A printer according to claim 5, in which said guide member has two sides and said hook-shaped projection is formed on both sides of said guide member.
- 8. A printer according to claim 5, in which an entire top part of said guide member is formed into a hook-shape.
- 9. A printer according to claim 6, in which said hook-shaped projection is formed with a round contour.
- 10. The printed of claim 2 wherein said guide member comprises a stationary hook-shaped projection.
Priority Claims (10)
Number |
Date |
Country |
Kind |
1-114631 |
May 1989 |
JPX |
|
1-154906 |
Jun 1989 |
JPX |
|
1-97544 U |
Aug 1989 |
JPX |
|
1-215239 |
Aug 1989 |
JPX |
|
1-215240 |
Aug 1989 |
JPX |
|
2-19449 |
Jan 1990 |
JPX |
|
2-52103 |
Mar 1990 |
JPX |
|
2-52111 |
Mar 1990 |
JPX |
|
2-27518 U |
Mar 1990 |
JPX |
|
2-92640 |
Apr 1990 |
JPX |
|
Parent Case Info
This application is a division of Ser. No. 08/053,016 filed Aug. 27, 1993, now U.S. Pat. No. 5,433,544, which is a continuation of Ser. No. 07/520,709 filed May 8, 1990, now abandoned.
US Referenced Citations (13)
Foreign Referenced Citations (8)
Number |
Date |
Country |
0180370 |
May 1986 |
EPX |
0257527 |
Mar 1988 |
EPX |
0272802 |
Jun 1988 |
EPX |
3816240 |
Nov 1988 |
DEX |
31270 |
Feb 1986 |
JPX |
39364 |
Feb 1988 |
JPX |
53075 |
Mar 1988 |
JPX |
2219281 |
Dec 1989 |
GBX |
Non-Patent Literature Citations (1)
Entry |
IBM Tech Disc Bull. "Paper Table Actuated Aligners";S.P. Garrison et al; vol. 21, No. 10, pp. 3890-3891; Mar. 1979. |
Divisions (1)
|
Number |
Date |
Country |
Parent |
53016 |
Apr 1993 |
|
Continuations (1)
|
Number |
Date |
Country |
Parent |
520709 |
May 1990 |
|