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Class Information
Number: 250/559.01
Name: Radiant energy > Photocells; circuits and apparatus > With circuit for evaluating a web, strand, strip, or sheet
Description: Subject matter wherein a photocell is responsive to light from a material having a cross-sectional dimension which is small compared to length, and through additional structure (i.e., a circuit) produces an electrical or mechanical output indicative of some characteristic of the material.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7627141 |
System and method for measuring color on a printing press |
Dec. 1, 2009 |
| 7619729 |
Method for detecting particles and defects and inspection equipment thereof |
Nov. 17, 2009 |
| 7582888 |
Reflection type optical sensor and method for detecting surface roughness |
Sep. 1, 2009 |
| 7435947 |
Apparatus and methods for integrating encoding functions in material placement machines |
Oct. 14, 2008 |
| 7427768 |
Apparatus, unit and method for testing image sensor packages |
Sep. 23, 2008 |
| 7425719 |
Method and apparatus for selectively providing data from a test head to a processor |
Sep. 16, 2008 |
| 7376251 |
Electronic image evaluating device and evalution method |
May. 20, 2008 |
| 7334520 |
Printing press and device for the inline monitoring of printing quality in sheet-fed offset printing presses |
Feb. 26, 2008 |
| 7317198 |
Method for determining the scale of an observation area |
Jan. 8, 2008 |
| 7301164 |
Measuring apparatus |
Nov. 27, 2007 |
| 7278704 |
Image forming apparatus |
Oct. 9, 2007 |
| 7167580 |
Image quality assurance systems and methodologies for improving the identification of and access speed to image quality suspects in documents |
Jan. 23, 2007 |
| 7155356 |
Quality and condition monitoring based on spectrum separating measurement |
Dec. 26, 2006 |
| 7101461 |
Method and apparatus for imaging a paper web |
Sep. 5, 2006 |
| 7084981 |
Method for determining the paper quality for halftone printing |
Aug. 1, 2006 |
| 7057157 |
Photosensor device and disk inspection apparatus using it |
Jun. 6, 2006 |
| 7030400 |
Real-time web inspection method and apparatus using combined reflected and transmitted light images |
Apr. 18, 2006 |
| 7001485 |
Arrangement for measuring properties of a moving paper web |
Feb. 21, 2006 |
| 7003149 |
Method and device for optically monitoring fabrication processes of finely structured surfaces in a semiconductor production |
Feb. 21, 2006 |
| 6998628 |
Method of media type differentiation in an imaging apparatus |
Feb. 14, 2006 |
| 6994432 |
Early transparency detection routine for inkjet printing |
Feb. 7, 2006 |
| 6950777 |
Method and system for assessing pulp and paper mill performance |
Sep. 27, 2005 |
| 6934028 |
Certification and verification management system and method for a web inspection apparatus |
Aug. 23, 2005 |
| 6914254 |
Apparatus for manufacturing evaluation reference tape |
Jul. 5, 2005 |
| 6776543 |
Fiber optic print media thickness sensor and method |
Aug. 17, 2004 |
| 6750465 |
Device for evaluating diffractive authenticity features |
Jun. 15, 2004 |
| 6731393 |
System and related methods for automatically determining media type in a printing device media tray |
May. 4, 2004 |
| 6707486 |
Directional motion estimator |
Mar. 16, 2004 |
| 6685313 |
Early transparency detection routine for inkjet printing |
Feb. 3, 2004 |
| 6668231 |
Sheet parameter measurement |
Dec. 23, 2003 |
| 6668155 |
Lead edge paper curl sensor |
Dec. 23, 2003 |
| 6655777 |
Automatic horizontal and vertical head-to-head alignment method and sensor for an ink jet printer |
Dec. 2, 2003 |
| 6646280 |
Device and method for inspecting and cutting strips of security documents |
Nov. 11, 2003 |
| 6614918 |
Apparatus for inspecting light-and-shade portions and method thereof |
Sep. 2, 2003 |
| 6561643 |
Advanced media determination system for inkjet printing |
May. 13, 2003 |
| 6556946 |
Linear position sensor |
Apr. 29, 2003 |
| 6542240 |
Method of identifying defective roll on a strip processing line |
Apr. 1, 2003 |
| 6476906 |
Apparatus for measuring stress in a thin film and method of manufacturing a probe used therefor |
Nov. 5, 2002 |
| 6386676 |
Reflective type media sensing methodology |
May. 14, 2002 |
| 6356346 |
Device and method for inspecting a disk for physical defects |
Mar. 12, 2002 |
| 6344895 |
Paper money identification device |
Feb. 5, 2002 |
| 6263291 |
Method and apparatus for measuring color and/or composition |
Jul. 17, 2001 |
| 6244305 |
Reflected light type weft monitoring device |
Jun. 12, 2001 |
| 6239938 |
Multi-actuator optics drive system for laser servowriting |
May. 29, 2001 |
| 6188077 |
Method and measuring machine for analyzing a paper web |
Feb. 13, 2001 |
| 6178254 |
Method for elimination of effects of imperfections on color measurements |
Jan. 23, 2001 |
| 6150946 |
Monitoring unit with test beam in conjunction with packaging machines |
Nov. 21, 2000 |
| 6082732 |
System for detecting superposed sheets |
Jul. 4, 2000 |
| 6038021 |
Optically based on-line fiber monitoring system with drift compensation |
Mar. 14, 2000 |
| 6026172 |
System and method for zoom lens calibration and method using same |
Feb. 15, 2000 |
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