Jian L Wen

US Patent:

6535704, Mar 18, 2003

Filed:

Nov 20, 2000

Appl. No.:

09/717325

Inventors:

Jian Wen - Irvine CA

Assignee:

Aetas Technology, Incorporated - Irvine CA

International Classification:

G03G 1502

US Classification:

399116, 399118

Abstract:

An imaging system including a plurality of developing stations for developing an image on a sheet, a releasably removable image receiving module having at least one exposing unit and an image receiving substrate and a support structure for receiving the releasably removable image receiving module. The releasably removable image receiving module is configured to engage the support structure of the system such that the image receiving substrate of the module can be disposed in an operative relationship with the developing stations when the removable module is engaged with the support structure. This imaging system provides a method for upgrading, downgrading or modifying the imaging system that could be substantially performed by an end user. This imaging system may be embodied in a monocolor or multicolor printer, copier, facsimile machine or other electrophotographic based apparatus.

US Patent:

7720404, May 18, 2010

Filed:

Nov 30, 2007

Appl. No.:

11/947862

Inventors:

Jian Wen - Lexington KY, US
David Anthony Schneider - Lexington KY, US
Delbert Lester Elliott - Georgetown KY, US

Assignee:

Lexmark International, Inc. - Lexington KY

International Classification:

G03G 15/00
G03G 15/01

US Classification:

399 82, 399 76, 399299, 399302

Abstract:

The present application is directed to methods of operating a multi-color image forming device in a mono-color mode. The methods may include performing three basic loops during the printing in the mono-color mode. A first loop may include printing mono-color pages up to an initial preset maximum. The preset maximum may prevent a wear mark from forming on the non-operational PC members due to rubbing against the moving ITM. A second loop may occur when the mono-color pages exceeds the initial preset maximum. The second loop may include rotating the non-operational imaging stations to prevent wear. A third loop may occur when the number of mono-color images exceeds an overall maximum number. The third loop may include resetting the non-operational image forming stations to allow for continuing printing in the mono-color mode.

US Patent:

20110038009, Feb 17, 2011

Filed:

Aug 13, 2009

Appl. No.:

12/540458

Inventors:

Brian Edward Cooper - Lexington KY, US
Ahmed Hamad Mohamed Eid - Lexington KY, US
Jian Wen - Georgetown KY, US

International Classification:

G06K 15/02

US Classification:

358 306, 358 326, 358 116

Abstract:

Disclosed is a method for compensating an imaging defect in an image forming apparatus. The method includes generating a raster image. Further, the method includes determining a compensating profile representing the imaging defect in the image forming apparatus. Furthermore, the method includes forming a defect-compensated image based on the raster image and the compensating profile. Also, disclosed is the image forming apparatus capable of compensating the imaging defect thereof.

US Patent:

20130173666, Jul 4, 2013

Filed:

Dec 29, 2011

Appl. No.:

13/340335

Inventors:

Yan Qi - Fremont CA, US
Yu Xu - Burlingame CA, US
Olli Pekka Kostamaa - Santa Monica CA, US
Jian Wen - Irvine CA, US

International Classification:

G06F 17/30

US Classification:

707798, 707E17011, 707E1701

Abstract:

Techniques for data assignment from an external distributed file system (DFS) to a database management system (DBMS) are provided. Data blocks from the DFS are represented as first nodes and access module processors of the DBMS are represented as second nodes. A graph is produced with the first and second nodes. Assignments are made for the first nodes to the second nodes based on evaluation of the graph to integrate the DFS with the DBMS.

US Patent:

63110334, Oct 30, 2001

Filed:

Feb 11, 2000

Appl. No.:

9/503098

Inventors:

Jian Wen - Irvine CA
Hazen Hoyt - Costa Mesa CA

Assignee:

Aetas Technology Corporation - Irvine CA

International Classification:

G03G 1500

US Classification:

399164

Abstract:

In the embodiment disclosed in the specification, an electrophotographic exposure and development arrangement has a flexible transparent photoreceptor belt driven between two support rollers and along four printing stations at each of which the photosensitive surface of the photoreceptor is charged, exposed to a light image corresponding to a selected color, and developed with toner of the corresponding color to produce a composite multicolor image which is transferred to a substrate and subsequently fixed on the substrate. At each printing station an exposure unit has a curved belt support surface which is engaged by the photoreceptor belt passing through the printing station between the exposure location and a development location with a curvature and length selected to minimize the effect of ripples or irregularities in the position of the photosensitive surface of the photoreceptive belt resulting from a set taken by the photoreceptor belt when held stationery against a supporting number.

US Patent:

20140222871, Aug 7, 2014

Filed:

Mar 18, 2014

Appl. No.:

14/218183

Inventors:

- Dayton OH, US
Yu Xu - Burlingame CA, US
Olli Pekka Kostamaa - Santa Monica CA, US
Jian Wen - Irvine CA, US

Assignee:

Teradata US, Inc. - Dayton OH

International Classification:

G06F 17/30

US Classification:

707798

Abstract:

Techniques for data assignment from an external distributed file system (DFS) to a database management system (DBMS) are provided. Data blocks from the DFS are represented as first nodes and access module processors of the DBMS are represented as second nodes. A graph is produced with the first and second nodes. Assignments are made for the first nodes to the second nodes based on evaluation of the graph to integrate the DFS with the DBMS.