Leonard Y Guan

US Patent:

7677448, Mar 16, 2010

Filed:

Jun 10, 2005

Appl. No.:

11/149908

Inventors:

Leonard Guan - Wilsonville OR, US
Robin Y. Wessel - Wilsonville OR, US

Assignee:

Xerox Corporation - Rochester NY

International Classification:

G06K 5/00

US Classification:

235382, 358 114, 347 5, 347 19, 347 86, 399 8, 399 12

Abstract:

A device, such as a printer or copier, identifies the type of module being used. If the type of module requires the device to receive an unlock code, the device prompts for the unlock code (which can be a hash of the serial number of the device). Once the unlock code is received, the device can be used with modules of that type. If the unlock code is not received, the device does not operate with modules of that type.

US Patent:

8066183, Nov 29, 2011

Filed:

Jan 28, 2010

Appl. No.:

12/695455

Inventors:

Leonard Guan - Wilsonville OR, US
Robin Y. Wessel - Wilsonville OR, US

Assignee:

Xerox Corporation - Norwalk CT

International Classification:

G06K 5/00

US Classification:

235382, 400 76, 399 27, 399 79, 399 80

Abstract:

A device, such as a printer or copier, identifies the type of module being used. If the type of module requires the device to receive an unlock code, the device prompts for the unlock code (which can be a hash of the serial number of the device). Once the unlock code is received, the device can be used with modules of that type. If the unlock code is not received, the device does not operate with modules of that type.

US Patent:

57615977, Jun 2, 1998

Filed:

Sep 12, 1996

Appl. No.:

8/713637

Inventors:

Craig Smith - Portland OR
H. Erwin Grellmann - Aloha OR
Leonard Guan - Wilsonville OR
David D. Martenson - Milwaukie OR

Assignee:

Tektronix, Inc. - Wilsonville OR

International Classification:

G03G 1500
G03G 1520
G03G 2100

US Classification:

399339

Abstract:

An improved fusing apparatus for fixing or fusing images on print media is disclosed wherein a relatively small pressure applying surface, such as the surface of a rotatable pressure wheel, is lubricated with a lubricating medium such as silicone oil, and engages the printed image to apply pressure and fuse the image to the image receiving substrate. The fusing apparatus is mounted for reciprocal back and forth movement across the printed image on the image receiving substrate or medium to fuse the image into the substrate and flatten or smooth the upper exposed surface of the ink image. The pressure wheel is passed in multiple overlapping passes over the printed image to uniformly fuse the image into the media.

US Patent:

20140201073, Jul 17, 2014

Filed:

Jan 14, 2013

Appl. No.:

13/740368

Inventors:

- Norwalk CT, US
James D. Rise - Lake Oswego OR, US
James Patrick VanWinkle - West Linn OR, US
Robin Yuen Wessel - Tigard OR, US
Charles R. Carlson - Beaverton OR, US
Shanti Villarreal - Wilsonville OR, US
Leonard Guan - Happy Valley OR, US

Assignee:

XEROX CORPORATION - Norwalk CT

International Classification:

G06Q 20/14

US Classification:

705 40, 705 39

Abstract:

Systems and methods are provided for managing a document processing device of a consumer. According to one embodiment, a registration request for a managed print service (MPS) plan is received from a retailer selling the MPS plan to the consumer. The MPS plan includes a plurality of credits. The MPS plan is associated with an MPS account of the consumer based on the registration request, and the document processing device is associated with the MPS plan. Data regarding a remaining life of a consumable of the document processing device or usage of the document processing device is received from the consumer. The credits are decremented based on the received data. The provisioning of a replacement for the consumable to the consumer is coordinated in response to the remaining life of the consumable falling below a threshold and the MPS plan including credits.