US5691760A
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US
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Photosensitive silicon chip having photosites spaced at varying pitches
Assignee: Xerox Corp
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Filing: 1995-10-12
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Granted: 1997-11-25
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Expires: 2015-10-12
Abstract
Abstract In a hard-copy scanner in which a set of photosensitive silicon chips are abutted to form a single page-width array of photosensors, the photosites at the critical ends of each chip are irregularly spaced, relative to the other photosites on the chip. This irregular spacing enables compensation for imprecisions in the dimensions of individual chips. The spacing principle can be applied as well to LED's or portions of ink-jet ejectors.
Inventors
- 👤 Paul A. Hosier
- 👤 Jagdish C. Tandon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:05
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/024; H04N1/028; H04N1/03; H04N1/0308; B; B41; B41J; B41J2/00; B41J2/435; B41J2/447; B41J2/45; H04N1/04; H04N1/19; H04N1/191; H04N1/192; H04N1/193; H04N1/1934; H10; H10W; H10W90/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
149 words
A photosensitive device, comprising: a semiconductor chip; a plurality of regular photosites provided on a main surface of the chip, each regular photosite defining a perimeter, the regular photosites being arranged in a linear array with each regular photosite being spaced from the perimeter of a neighboring regular photosite by a predetermined first spacing distance; an end photosite provided at one end of the linear array, said end photosite not included in said plurality of regular photosites, the end photosite defining a perimeter; and a next-to-end photosite provided between the end photosite and a regular photosite in the linear array, said next-to-end photosite not included in mid plurally of regular photosites, the next-to-end photosite defining a perimeter, the perimeter of the end photosite being spaced from the perimeter of the next-to-end photosite by a predetermined second spacing distance, the second spacing distance being less than the first spacing distance.
Claim 2
Dependent Claim
149 words
A photosensitive device, comprising: a semiconductor chip; a plurality of regular photosites provided on a main surface of the chip, each regular photosite defining a perimeter, the regular photosites being arranged in a linear array with each regular photosite being spaced from the perimeter of a neighboring regular photosite by a predetermined first spacing distance; an end photosite provided at one end of the linear array, said end photosite not included in said plurality of regular photosites, the end photosite defining a perimeter; and a next-to-end photosite provided between the end photosite and a regular photosite in the linear array, said next-to-end photosite not included in mid plurally of regular photosites, the next-to-end photosite defining a perimeter, the perimeter of the end photosite being spaced from the perimeter of the next-to-end photosite by a predetermined second spacing distance, the second spacing distance being less than the first spacing distance.
Claim 3
Dependent Claim
29 words
The device of claim 1, the perimeter of each regular photosite and the perimeter of the end photosite and the perimeter of the next-to-end photosite all having identical dimensions.
Claim 4
Dependent Claim
30 words
The device of claim 1, a distance between a perimeter of the end photosite and an edge of the surface of the chip being less than the second spacing distance.
Claim 5
Dependent Claim
41 words
The device of claim 1, the perimeter of the next-to-end photosite being spaced from the perimeter of a regular photosite in the linear array by a predetermined third spacing distance, the third spacing distance being less than the first spacing distance.
Claim 6
Dependent Claim
16 words
The device of claim 4, the third spacing distance being greater than the second spacing distance.
Claim 7
Dependent Claim
173 words
A photosensitive device, comprising: a semiconductor chip; a plurality of regular photosites provided on a main surface of the chip, each regular photosite defining a perimeter, the regular photosites housing arranged in a linear array with each regular photosite being spaced from the perimeter of a neighboring regular photosite by a predetermined first spacing distance; an end photosite provide at one end of the linear array, said end photosite not included in said plurality of regular photosites, the end photosite defining a perimeter; and a next-to-end photosite provided between the and photosite and a regular photosite in the linear array, said next-to-end photosite not included in said plurality of regular photosites, the next-to-end photosite defining a perimeter, the perimeter of each regular photosite and the perimeter of the end photosite and the perimeter of the next-to-end photosite all having identical dimensions, the perimeter of the end photosite being spaced from the perimeter of the next-to-end photosite by a predetermined second spacing distance, the second spacing distance being less than the first spacing distance.
Claim 8
Dependent Claim
173 words
A photosensitive device, comprising: a semiconductor chip; a plurality of regular photosites provided on a main surface of the chip, each regular photosite defining a perimeter, the regular photosites housing arranged in a linear array with each regular photosite being spaced from the perimeter of a neighboring regular photosite by a predetermined first spacing distance; an end photosite provide at one end of the linear array, said end photosite not included in said plurality of regular photosites, the end photosite defining a perimeter; and a next-to-end photosite provided between the and photosite and a regular photosite in the linear array, said next-to-end photosite not included in said plurality of regular photosites, the next-to-end photosite defining a perimeter, the perimeter of each regular photosite and the perimeter of the end photosite and the perimeter of the next-to-end photosite all having identical dimensions, the perimeter of the end photosite being spaced from the perimeter of the next-to-end photosite by a predetermined second spacing distance, the second spacing distance being less than the first spacing distance.
Claim 9
Dependent Claim
41 words
The device of claim 6, the perimeter of the next-to-end photosite being spaced from the perimeter of a regular photosite in the linear array by a predetermined third spacing distance, the third spacing distance being less than the first spacing distance.
Claim 10
Dependent Claim
30 words
The device of claim 6, a distance between a perimeter of the end photosite and an edge of the surface of the chip being less than the second spacing distance.
Claim 11
Dependent Claim
139 words
A semiconductor chip, comprising: a plurality of physically-identical elements defined on a main surface of the chip, each element defining a perimeter, the elements being arranged in a linear array with each element being spaced from the perimeter of a neighboring element by a predetermined first spacing distance; an end element disposed at one end of the linear array, said end element not included in said plurality of elements, the end element defining a perimeter; and a next-to-end structure disposed between the end element and an element in the linear array, said next-to-end element not included in said plurality of elements, the next-to-end element defining a perimeter, the perimeter of the end element being spaced from the perimeter of the next-to-end element by a predetermined second spacing distance, the second spacing distance being less than the first spacing distance.
Claim 12
Dependent Claim
139 words
A semiconductor chip, comprising: a plurality of physically-identical elements defined on a main surface of the chip, each element defining a perimeter, the elements being arranged in a linear array with each element being spaced from the perimeter of a neighboring element by a predetermined first spacing distance; an end element disposed at one end of the linear array, said end element not included in said plurality of elements, the end element defining a perimeter; and a next-to-end structure disposed between the end element and an element in the linear array, said next-to-end element not included in said plurality of elements, the next-to-end element defining a perimeter, the perimeter of the end element being spaced from the perimeter of the next-to-end element by a predetermined second spacing distance, the second spacing distance being less than the first spacing distance.
Claim 13
Dependent Claim
12 words
The chip of claim 9, wherein each element is a light-emitting diode.
Claim 14
Dependent Claim
15 words
The chip of claim 9, wherein each element is a portion of an ink-jet ejector.
Claim 15
Dependent Claim
30 words
The chip of claim 9, a distance between a perimeter of the end element and an edge of the surface of the chip being less than the second spacing distance.
Claim 16
Dependent Claim
28 words
The chip of claim 9, the perimeter of each element and the perimeter of the end element and the perimeter of the next-to-end element all having identical dimensions.
Claim 17
Dependent Claim
40 words
The chip of claim 9, the perimeter of the next-to-end element being spaced from the perimeter of an element in the linear array by a predetermined third spacing distance, the third spacing distance being less than the first spacing distance.
Claim 18
Dependent Claim
16 words
The chip of claim 14, the third spacing distance being greater than the second spacing distance.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-11-24 | 2001-05-26 | 2001-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-11-24 | 2005-05-26 | 2005-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-11-24 | 2009-05-26 | 2009-11-25 | $7700.00 | Window Closed / Lapsed |