F
Fred F. Hubble
Researcher at Xerox
Publications - 59
Citations - 1871
Fred F. Hubble is an academic researcher from Xerox. The author has contributed to research in topics: Signal & Ray. The author has an hindex of 22, co-authored 59 publications receiving 1871 citations.
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Patent
Sensing system for detecting presence of an ink container and level of ink therein
TL;DR: In this article, a low-ink sensing system is combined with an ink cartridge detection system to enable a more efficient ink jet printer, which is modified by the incorporation of two light directing elements, in the preferred embodiment, a faceted prism and a roof mirror, into a transparent wall of the container housing.
Patent
Spectrophotometer for color printer color control with displacement insensitive optics
Fred F. Hubble,Joel A. Kubby +1 more
TL;DR: In this article, an improved spectrophotometer for noncontact measuring of the colors of colored target areas, especially, test patches on moving printed test sheets in an unrestrained normal output path of a color printer, was presented.
Patent
Collector for an LED array
TL;DR: A light collector for an LED array for efficiently collecting and collimating light emitting from the LEDs and projecting the light into an optical wave guide which directs that light onto a photoreceptor surface is described in this paper.
Patent
Angular, azimuthal and displacement insensitive spectrophotometer for color printer color control systems
TL;DR: An improved and lower cost color spectrophotometer, especially suitable for an on-line color printer color control system, was proposed in this paper. But it is not suitable for outdoor applications.
Patent
Diagnostics for color printer on-line spectrophotometer control system
Fred F. Hubble,Tonya L. Love,Lalit Keshav Mestha,Gary W. Skinner,Dennis M. Diehl,Robert E. Grace,Eric Jackson,Yao Rong Wang +7 more
TL;DR: In this article, a color analysis method in which sheets with multiple different color printed test patches are moved relative to a color analyzing spectrophotometer, and in which fiducial marks are printed adjacent to respective test patches and optically detected by a detector to provide a triggering system for the respective test patch analysis is described.