IP Library Granted Patent US 7,467,843
Granted Patent B2
US 7,467,843 · App. 11/775,646 · Granted Dec 23, 2008

Methods for determining unidirectional print direction for improved print quality

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Quick Facts
Patent No.
US 7,467,843
App. No.
11/775,646
Granted
Dec 23, 2008
Kind
B2
Abstract

A method of determining unidirectional print direction for optimal quality on an ink jet printer capable of bidirectional printing includes printing a first plurality of indicators on a recordable medium, wherein the first plurality of indicators are printed in a first direction; printing a second plurality of indicators on the recordable medium, wherein the second plurality of indicators are printed in a second direction opposite the first direction; and determining an optimum print direction from the printed indicators; and setting in the printer the optimum print direction for unidirectional printing.

Claims (28)

1. A method of determining unidirectional print direction for optimal print quality on an inkjet printer capable of bidirectional printing, comprising:

printing a first plurality of indicators on a recordable medium, wherein the first plurality of indicators are printed in a first direction;

printing a second plurality of indicators on the recordable medium, wherein the second plurality of indicators are printed in a second direction opposite the first direction;

scanning the first plurality of indicators and the second plurality of indicators with a sensor, wherein the sensor is configured to analyze one or more print characteristics of a recorded image;

determining an optimum unidirectional print direction of the bidirectional capable printer from the scanned indicators; and

storing in the printer the optimum unidirectional print direction for unidirectional printing.

2. The method of claim 1 , wherein the first plurality of indicators and the second plurality of indicators each comprise one or more patches.

3. The method of claim 1 , wherein the first plurality of indicators and the second plurality of indicators each comprise one or more vertical lines.

4. The method of claim 1 , wherein determining an optimum unidirectional print direction comprises:

comparing the first plurality of indicators with the second plurality of indicators.

5. A storage medium with machine-readable computer program code for determining unidirectional print direction for optimal quality on an ink jet printer having the capability of bidirectional printing, the storage medium including instructions for causing a computer or printer controller to control a printer to implement a method, comprising:

printing a first plurality of indicators on a recordable medium, wherein the first plurality of indicators are printed in a first direction;

printing a second plurality of indicators on the recordable medium, wherein the second plurality of indicators are printed in a second direction opposite the first direction;

scanning the first plurality of indicators and the second plurality of indicators with a sensor, wherein the sensor is configured to analyze one or more print characteristics of a recorded image;

determining an optimal unidirectional print direction from the scanned indicators of the bidirectional capable printer; and

storing in the computer or the controller for the printer the optimal print direction for unidirectional printing.

6. A computer data signal embodied in a carrier wave and representing sequences of instructions which, when executed by a processor, determine unidirectional print direction for better optimal quality on an ink jet printer having the capability of bidirectional printing, the signal comprising instructions for:

printing a first plurality of indicators on a recordable medium, wherein the first plurality of indicators are printed in a first direction;

printing a second plurality of indicators on the recordable medium, wherein the second plurality of indicators are printed in a second direction opposite the first direction;

scanning the first plurality of indicators and the second plurality of indicators with a sensor, wherein the sensor is configured to analyze one or more print characteristics of a recorded image;

determining an optimal unidirectional print direction from the scanned indicators of the bidirectional capable printer; and

storing in the computer or the controller for the printer the optimal print direction for unidirectional printing.

7. A method of determining unidirectional print direction for optimal print quality on an inkjet printer capable of bidirectional printing, comprising:

printing at least one first indicator on a recordable medium, wherein the at least one first indicators is printed in a first direction;

printing at least one second indicator on the recordable medium, wherein the at least one second indicator is printed in a second direction opposite the first direction;

scanning the first plurality of indicators and the second plurality of indicators with a sensor, wherein the sensor is configured to analyze one or more print characteristics of a recorded image;

determining an optimum unidirectional print direction from the scanned indicators of the bidirectional capable printer; and

storing in the printer the optimum print direction for unidirectional printing.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 14, 2013
From: LEXMARK INTERNATIONAL, INC.; LEXMARK INTERNATIONAL TECHNOLOGY, S.A.
To: FUNAI ELECTRIC CO., LTD
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