Printer and control method for the same

• US 6,257,783 B1
• Filed: 03/30/2000
• Issued: 07/10/2001
• Est. Priority Date: 03/30/1999
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Endo, Takeshi, Hanaoka, Yukihiro
• Primary Examiner(s): Hilten, John S.
• Assistant Examiner(s): Nolan, Jr., Charles H.
• Application Number:
  US09/538,753
• Time in Patent Office: 467 Days
• Field of Search: 400/61, 400/578, 400/582, 400/188, 271/225
• US Class Current: 400/578
• CPC Class Codes: H04N 1/00572 with refeeding for double-sided scanning, e.g. using one scanning head for both sides of a sheet
• CPC Class Codes: H04N 1/00578 using at least part of a loop, e.g. using a return loop
• CPC Class Codes: H04N 1/0058 using at least one dead-end path, e.g. using a sheet ejection path
• CPC Class Codes: H04N 1/00596 using at least a part of the apparatus in common for transporting to or from a plurality of scanning positions, e.g. for reading and printing
• CPC Class Codes: H04N 1/00602 Feed rollers

Abstract

A compact printer efficiently performs a sequence of processes to front and back sides of a print medium, typically a personal check. The printer has a transportation path for transporting a check P from the insertion opening thereof to the ejection opening by drive rollers, moving the check P through the transportation path. An image scanner captures an image of the print medium as it moves through the transportation path. A print head prints to the print medium. A reverse feed mechanism disposed on the upstream side of the ejection opening reverse feeds a print medium transported in the downstream direction back to the upstream side of the transportation path by way of a form return path for guiding the reversed print medium.

Claims

1. A printer comprising:

a transportation path having a print medium insertion opening and the ejection opening;

a print medium transporter coupled to the transportion path, the print medium transporter adapted to move a print medium in a first orientation through the entire print medium path between the insertion opening and the ejection opening;

an image reader disposed adjacent the transportation path and oriented to capture an image of the print medium;

a printing mechanism disposed adjacent the transportation path and oriented to print on the print medium;

a reverse feed mechanism disposed adjacent the transportation path upstream of the ejection opening and adapted to reverse feed the print medium in a second orientation opposite from the first orientation through the entire print medium path; and

a return path connected to the reverse feed mechanism and to a portion of the transportation path upstream of the image reader.

2. A printer as described in claim 1, wherein the printing mechanism is disposed to the transportation path downstream of the image reader.

3. A printer as described in claim 1, wherein the printing mechanism is disposed to the transportation path upstream of the image reader.

4. A printer as described in claim 1, further comprising a path divider at a junction between the transportation path and return path, the path divider adapted to guide to the ejection opening a print medium advanced from the upstream side of the transportation path to the path junction, and adapted to guide to the return path a print medium reversed by the reverse feed mechanism from a downstream side of the transportation path to the path junction.

5. A printer as described in claim 4, wherein the path divider is a path switch rotatably shaft supported, oriented in a direction closing the transportation path at the path junction, and adapted to be opened by a force of a leading edge of a print medium advanced toward the ejection opening and contacting the path switch.

6. A printer as described in claim 1, wherein the print medium transporter comprises two drive side transport rollers disposed mutually separated, and a circulation path formed by the transportation path, the return path being disposed around the rollers.

7. A printer as described in claim 6, further comprising a third transport roller driven in forward and reverse directions and disposed to the transportation path upstream of the ejection opening, wherein the reverse feed mechanism is achieved by driving the third transport roller in reverse.

8. A printer as described in claim 7, further comprising a reversible motor;

a first gear set that drives the third transport roller forward or reverse according to the direction of motor rotation; and

a second gear set that drives the two transport rollers of the print medium transporter forward regardless of the direction of motor rotation.

9. A printer as described in claim 8, wherein the second gear set comprises:

two one-way clutches supported on a rotating shaft of one transport roller of the print medium transporter adapted to alternately transfer torque in the same direction of rotation to said transport roller;

a third gear set that transfers drive force from the motor during forward motor drive to the transport roller by way of one intervening one-way clutch; and

a fourth gear set that transfers drive force from the motor during reverse motor drive to the transport roller by way of the other intervening one-way clutch.

10. A printer as described in claim 1, in which the printing mechanism comprises:

a print head; and

a print head transport mechanism for moving the print head substantially orthogonal to the print medium transport direction.

11. A printer as described in claim 1, further comprising a magnetic ink character reader disposed adjacent the transportation path on a downstream side of the image reader.

12. A printer as described in claim 11, wherein the magnetic ink character reader comprises:

a magnetic head; and

a magnetic head transport mechanism for moving the magnetic head substantially orthogonal to the print medium transport direction.

13. A printer as described in claim 12, wherein the printing mechanism comprises a print head and a print head transport mechanism for moving the print head substantially orthogonal to the print medium transport direction, and wherein the magnetic head transport mechanism is the print head transport mechanism.

14. A printer as described in claim 1, further comprising a character recognition mechanism adapted to detect magnetic ink characters on the print medium captured and stored by the image reader.

15. A printer as described in claim 1, further comprising a data capture mechanism adapted to obtain information relating to a print area of the print medium from the print medium image captured by the image reader, wherein the printing mechanism is controlled based on the captured data.

16. A printer as described in claim 1, further comprising a print medium length detector adjacent the transportation path;

and

a reverse feed controller adapted to prohibit reverse feed of the print medium by the reverse teed mechanism when the print medium length detected by the length detector is longer than a length of a circulation path formed by the transportation path and return path.

17. A printer as described in claim 1, wherein the print medium is a check.

18. A printer control method for processing a print medium including at least non-magnetic ink characters, the printer control method comprising:

reading an image of the print medium, including the non-magnetic ink characters, transported through a print medium transporter;

printing to a first side of the print medium by a single printing mechanism;

feeding the print medium to a return path by reversing the print medium transport direction by a reverse feed mechanism; and

printing to a second side of the print medium by the single printing mechanism.

19. A control method as described in claim 18, further comprising:

feeding the print medium to the return path by reversing the print medium transport direction by the reverse feed mechanism;

capturing an image of the print medium during the print medium transportation by an image reader; and

ejecting the print medium from an ejection opening.

25. A control method as described in claim 18, wherein the reading step comprises reading an entire image of the print medium transported through the print medium transporter.

27. A control method as described in claim 18, wherein the print medium includes magnetic ink characters, and wherein the method further comprises reading the magnetic ink characters of the print medium.

20. A printer control method for processing a print medium including at least non-magnetic ink characters, the printer control method comprising:

printing to a first side of a print medium by a single printing mechanism;

reading an image of a printed first side of the print medium, including the non-magnetic ink characters;

feeding the print medium to a return path by reversing the print medium transport direction by a reverse feed mechanism;

printing to a second side of the print medium by the single printing mechanism;

reading an image of the printed second side of the print medium; and

ejecting the print medium from an ejection opening.

26. A control method as described in claim 20, wherein the reading step comprises reading an entire image of the print medium transported through the print medium transporter.

28. A control method as described in claim 20, wherein the print medium includes magnetic ink characters, and wherein the method further comprises reading the magnetic ink characters of the print medium.

21. A printer control method comprising:

printing to a first side of a print medium by a printing mechanism;

reading an image of a printed first side of the print medium;

detecting by a length detector a length of the print medium guided to the transportation path; and

ejecting the print medium from an ejection opening when the print medium length detected by the length detector is longer than a length of a circulation path formed by the transportation path and return path.

22. A printer comprising:

a transportation path for transporting a print medium from an insertion opening to an ejection opening, the transportation path having a print medium path between the insertion opening and the ejection opening;

transporting device for moving a print medium in a first orientation through the entire print medium path between the insertion opening and the ejection opening;

image reading device disposed adjacent the transportation path for capturing an image of a print medium transported in the transportation path;

printing means disposed adjacent the transportation path for printing to the print medium being transported through the transportation path;

reverse feeding device disposed adjacent the transportation path upstream of the ejection opening for reverse feeding the print medium in a second orientation opposite from the first orientation through the entire print medium path; and

a return path for guiding a print medium reverse fed by the reverse feeding device to a position on the transportation path upstream of the image reading means.

23. A printer comprising:

a transportation path having an insertion opening on one end and an ejection opening on an other end and a medium path between the insertion opening and the ejection opening, the entire medium path being U-shaped;

a first roller disposed inside the U-shape at an intermediate part of the transportation path;

a second roller disposed inside the U-shape near the insertion opening to the transportation path; and

a third roller disposed near the ejection opening for pulling a print medium out from the transportation path and then passing the print medium above the first roller for printing to or scanning a reverse side of a first side of the print medium after printing to or scanning the first side of a print medium transported in the transportation path.

24. A printer device as described in claim 23, in which the first roller and second roller always turn in a same direction, and

the third roller turns in forward and reverse directions.