Patent US5030993A successfully refreshed from Google Patents.
US5030993A
Expired / Lapsed
US
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Synchronous driving apparatus for a scanning exposure type reproducing apparatus
Assignee: Dainippon Screen Manufacturing Co Ltd
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Filing: 1988-07-21
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Granted: 1991-07-09
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Expires: 2008-07-21
Abstract
Abstract A synchronous driving apparatus for use in a scanning exposure type reproducing apparatus. A scanning system and a recording sheet are moved in synchronization without regard to changes in temperature.
Inventors
- 👤 Eiji Miyasaka
- 👤 Masayuki Handa
- 👤 Morihiro Takeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:32
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6529; G03G15/22; G03G15/28
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
122 words
An apparatus for forming a high quality image regardless of temperature changes, said apparatus comprising: moving means for moving a component of an image-forming system; feeding means for feeding a sheet to be exposed past an image-forming position by applying a first frictional force to said sheet; and driving means for driving said moving means by applying a second frictional force to said moving means, said first frictional force and said second frictional force being equivalent to each other regardless of changes in temperature so that the movement of said component and the feeding of said sheet are synchronized; wherein said feeding means includes a first roller, said moving means includes a second roller, and said first roller contacts said second roller.
Claim 2
Independent Claim
122 words
An apparatus for forming a high quality image regardless of temperature changes, said apparatus comprising: moving means for moving a component of an image-forming system; feeding means for feeding a sheet to be exposed past an image-forming position by applying a first frictional force to said sheet; and driving means for driving said moving means by applying a second frictional force to said moving means, said first frictional force and said second frictional force being equivalent to each other regardless of changes in temperature so that the movement of said component and the feeding of said sheet are synchronized; wherein said feeding means includes a first roller, said moving means includes a second roller, and said first roller contacts said second roller.
Claim 3
Dependent Claim
20 words
The apparatus of claim 1, further comprising a single driving source for driving said first roller and said second roller.
Claim 4
Independent Claim
128 words
An apparatus for forming a high quality image regardless of temperature changes, said apparatus comprising: moving means for moving a component of an image-forming system; feeding means for feeding a sheet to be exposed past an image-forming position by applying a first frictional force to said sheet; and driving means for driving said moving means by applying a second frictional force to said moving means, said first frictional force and said second frictional force being equivalent to each other regardless of changes in temperature so that the movement of said component and the feeding of said sheet are synchronized; wherein said feeding means includes a roller having a surface formed of rubber; and wherein said moving means includes a second roller having a surface formed of stainless steel.
Claim 5
Independent Claim
128 words
An apparatus for forming a high quality image regardless of temperature changes, said apparatus comprising: moving means for moving a component of an image-forming system; feeding means for feeding a sheet to be exposed past an image-forming position by applying a first frictional force to said sheet; and driving means for driving said moving means by applying a second frictional force to said moving means, said first frictional force and said second frictional force being equivalent to each other regardless of changes in temperature so that the movement of said component and the feeding of said sheet are synchronized; wherein said feeding means includes a roller having a surface formed of rubber; and wherein said moving means includes a second roller having a surface formed of stainless steel.
Claim 6
Dependent Claim
16 words
The apparatus of claim 3, further comprising: a second driving source for driving said feeding means.
Claim 7
Independent Claim
106 words
An apparatus for forming a high quality image regardless of temperature changes, said apparatus comprising: moving means for moving a component of an image-forming system; feeding means for feeding a sheet to be exposed past an image-forming position by applying a first frictional force to said sheet; and driving means for driving said moving means by applying a second frictional force to said moving means, said first frictional force and said second frictional force being equivalent to each other regardless of changes in temperature so that the movement of said component and the feeding of said sheet are synchronized; wherein said component is an optical system.
Claim 8
Independent Claim
106 words
An apparatus for forming a high quality image regardless of temperature changes, said apparatus comprising: moving means for moving a component of an image-forming system; feeding means for feeding a sheet to be exposed past an image-forming position by applying a first frictional force to said sheet; and driving means for driving said moving means by applying a second frictional force to said moving means, said first frictional force and said second frictional force being equivalent to each other regardless of changes in temperature so that the movement of said component and the feeding of said sheet are synchronized; wherein said component is an optical system.
Claim 9
Dependent Claim
36 words
The apparatus of claim 5, wherein said feeding means includes a first roller and said moving means includes a second roller, said driving means including a third roller, and said second roller contacts said third roller.
Claim 10
Dependent Claim
35 words
The apparatus of claim 6, wherein said first roller has a surface formed of rubber, said second roller has a surface formed of stainless steel, and said third roller has a surface formed of rubber.
Claim 11
Independent Claim
108 words
An apparatus for forming a high quality image regardless of temperature changes, said apparatus comprising: moving means for moving a component of an image-forming system; feeding means for feeding a sheet to be exposed past an image-forming position by applying a first frictional force to said sheet; and driving means for driving said moving means by applying a second frictional force to said moving means, said first frictional force and said second frictional force being equivalent to each other regardless of changes in temperature so that the movement of said component and the feeding of said sheet are synchronized; wherein said component is an original to be reproduced.
Claim 12
Independent Claim
108 words
An apparatus for forming a high quality image regardless of temperature changes, said apparatus comprising: moving means for moving a component of an image-forming system; feeding means for feeding a sheet to be exposed past an image-forming position by applying a first frictional force to said sheet; and driving means for driving said moving means by applying a second frictional force to said moving means, said first frictional force and said second frictional force being equivalent to each other regardless of changes in temperature so that the movement of said component and the feeding of said sheet are synchronized; wherein said component is an original to be reproduced.
Claim 13
Dependent Claim
35 words
The apparatus of claim 8, wherein said feeding means includes a first roller, said moving means includes a second roller, said driving means including a third roller, and said second roller contacts said third roller.
Claim 14
Dependent Claim
26 words
The apparatus of claim 9, wherein said first roller has a surface formed of rubber, and said third roller has a surface formed of a rubber.
Claim 15
Dependent Claim
16 words
The apparatus of claim 10, wherein said second roller has a surface formed of stainless steel.
Claim 16
Independent Claim
124 words
A method of forming a high quality image regardless of temperature changes, said method comprising the steps of: operating a moving means and thereby moving a component of an image-forming system, said moving means including a first roller; operating a feeding means and thereby feeding a sheet to be exposed past an image-formation position by applying a first frictional force to said sheet, said feeding means including a second roller which contacts said first roller; and driving said moving means by applying a second frictional force to said moving means, said first frictional force and said second frictional force being equivalent to each other regardless of changes in temperauture so that the movement of said component and the feeding of said sheet are synchronized.
Claim 17
Independent Claim
124 words
A method of forming a high quality image regardless of temperature changes, said method comprising the steps of: operating a moving means and thereby moving a component of an image-forming system, said moving means including a first roller; operating a feeding means and thereby feeding a sheet to be exposed past an image-formation position by applying a first frictional force to said sheet, said feeding means including a second roller which contacts said first roller; and driving said moving means by applying a second frictional force to said moving means, said first frictional force and said second frictional force being equivalent to each other regardless of changes in temperauture so that the movement of said component and the feeding of said sheet are synchronized.
Claim 18
Dependent Claim
14 words
The method of claim 12, wherein said component is an original to be reproduced.
Claim 19
Dependent Claim
12 words
The method of claim 12, wherein said component is an optical system.
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) | 1994-07-08 | 1995-01-07 | 1995-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-08 | 1999-01-07 | 1999-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-08 | 2003-01-07 | 2003-07-09 | $7700.00 | Window Closed / Lapsed |