Patent US4922292A successfully refreshed from Google Patents.
US4922292A
Expired / Lapsed
US
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Image forming device
Assignee: Toshiba Corp
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Filing: 1989-04-25
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Granted: 1990-05-01
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Expires: 2009-04-25
Abstract
Abstract A copying machine has a platen glass on which a document to be copied is set. An automatic document feeder (half ADF) and a platen cover (half platen cover) are positioned over opposite halves of the platen glass. The half ADF and the half platen cover can be connected to each other by a lock member so that the half ADF and the half platen cover open and close together against the platen glass. For copying a letter-size document, the half ADF is mainly used to automatically feed the document. For copying a ledger size document, the half ADF and the half platen cover are connected to each other and the document is set on the platen glass manually.
Inventors
- 👤 Junji Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:50
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/60; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6207; G03B27/625; G03B27/6257; G03G2215/00; G03G2215/00172; G03G2215/00177; G03G2215/00181; G03G2215/00185; G03G2215/00206; G03G2215/0021; G03G2215/00219; G03G2215/00232; G03G2215/00236
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
80 words
Document feeding apparatus for transporting a document onto a platen glass comprising: means for receiving a stack of documents; means for sequentially moving said documents from said receiving means to a portion of said platen glass; means, covering said portion of said platen glass, for holding each of said documents moved by said moving means; and means for covering said platen glass except said portion, said covering means being mounted to be opened from or closed against said platen glass.
Claim 2
Dependent Claim
80 words
Document feeding apparatus for transporting a document onto a platen glass comprising: means for receiving a stack of documents; means for sequentially moving said documents from said receiving means to a portion of said platen glass; means, covering said portion of said platen glass, for holding each of said documents moved by said moving means; and means for covering said platen glass except said portion, said covering means being mounted to be opened from or closed against said platen glass.
Claim 3
Dependent Claim
23 words
Apparatus as recited in claim 1, wherein said moving means comprises means for removing said document from said portion of said platen glass.
Claim 4
Dependent Claim
24 words
Apparatus as recited in claim 1, wherein said moving means comprises means for conveying in two directions said document moved from said receiving means.
Claim 5
Dependent Claim
24 words
Apparatus as recited in claim 3, wherein said holding means comprises means for receiving said document removed from said portion of said platen glass.
Claim 6
Dependent Claim
29 words
Apparatus as recited in claim 1, wherein said holding means comprises a holding member having a size substantially the same as that of a document which is used frequently.
Claim 7
Dependent Claim
29 words
Apparatus as recited in claim 1, wherein said covering means comprises a covering member having a size substantially the same as that of a document which is used frequently.
Claim 8
Dependent Claim
18 words
Apparatus as recited in claim 1, further comprising means for connecting said holding means with said covering means.
Claim 9
Dependent Claim
135 words
Image forming apparatus comprising: (a) a platen glass; (b) means for receiving a stack of documents; (c) means for sequentially moving said documents from said receiving means to a position on a first portion of said platen glass; (d) means, covering said first portion of said platen glass, for holding each of said documents moved by said moving means to said first portion; (e) means for covering a second portion of said platen glass different from said first portion, said covering means mounted to be opened from or closed against said platen glass; (f) means for selectively generating an image of a document on said platen glass at at least one of said first and second portions of said platen glass; and (g) means for generating copies corresponding to images from said image generating means.
Claim 10
Dependent Claim
135 words
Image forming apparatus comprising: (a) a platen glass; (b) means for receiving a stack of documents; (c) means for sequentially moving said documents from said receiving means to a position on a first portion of said platen glass; (d) means, covering said first portion of said platen glass, for holding each of said documents moved by said moving means to said first portion; (e) means for covering a second portion of said platen glass different from said first portion, said covering means mounted to be opened from or closed against said platen glass; (f) means for selectively generating an image of a document on said platen glass at at least one of said first and second portions of said platen glass; and (g) means for generating copies corresponding to images from said image generating means.
Claim 11
Dependent Claim
27 words
Apparatus as recited in claim 8, wherein said moving means comprises means for removing said document from said position on said first portion of said platen glass.
Claim 12
Dependent Claim
24 words
Apparatus as recited in claim 9, wherein said moving means comprises means for conveying in two directions said document moved from said receiving means.
Claim 13
Dependent Claim
24 words
Apparatus as recited in claim 9, wherein said holding means comprises means for receiving said document removed from said position on said first portion.
Claim 14
Dependent Claim
29 words
Apparatus as recited in claim 8, wherein said holding means comprises a holding member having a size substantially the same as that of a document which is used frequently.
Claim 15
Dependent Claim
29 words
Apparatus as recited in claim 8, wherein said covering means comprises a coVering member having a size substantially the same as that of a document which is used frequently.
Claim 16
Dependent Claim
18 words
Apparatus as recited in claim 8, further comprising means for connecting said holding means with said covering means.
Claim 17
Dependent Claim
53 words
Apparatus as recited in claim 8, further comprising: means for interrupting said moving means and said generating means when generating images of documents on said first portion; and means for controlling said generating means to generate an image of a document at said second portion between said platen glass and said covering means.
Claim 18
Dependent Claim
28 words
Apparatus as recited in claim 8, wherein said first portion of said platen glass is closer to said receiving means than said second portion of said platen glass.
Claim 19
Dependent Claim
111 words
Document feeding apparatus for bringing a sheet into a first position where said sheet is scanned and bringing said sheet out of said first position, which comprises: (a) means for receiving said sheet; (b) means for picking up said sheet stacked receiving means; (c) means for conveying said sheet picked up by said picking means to said first position; (d) first means for covering said sheet conveyed by said conveying means to said first position; (e) means for scanning said sheet; (f) second means for covering a second position different from said first position and at which a document is placed, said scanning means also scanning documents at said second position.
Claim 20
Dependent Claim
111 words
Document feeding apparatus for bringing a sheet into a first position where said sheet is scanned and bringing said sheet out of said first position, which comprises: (a) means for receiving said sheet; (b) means for picking up said sheet stacked receiving means; (c) means for conveying said sheet picked up by said picking means to said first position; (d) first means for covering said sheet conveyed by said conveying means to said first position; (e) means for scanning said sheet; (f) second means for covering a second position different from said first position and at which a document is placed, said scanning means also scanning documents at said second position.
Claim 21
Dependent Claim
21 words
Apparatus as recited in claim 17, wherein said first covering means comprises means for removing said sheet from said first position.
Claim 22
Dependent Claim
24 words
Apparatus as recited in claim 18, wherein said conveying means comprises means for conveying in two directions said document picked by said picking means.
Claim 23
Dependent Claim
21 words
Apparatus as recited in claim 17, further comprising means for receiving said sheet after having been positioned in said first position.
Claim 24
Dependent Claim
30 words
Apparatus as recited in claim 17, wherein said first covering means comprises a covering member having a size substantially the same as that of a sheet that is used frequently.
Claim 25
Dependent Claim
30 words
Apparatus as recited in claim 17, wherein said second covering means comprises a covering member having a size substantially the same as that of a document that is used frequently.
Claim 26
Dependent Claim
20 words
Apparatus as recited in claim 17, further comprising means for connecting said first covering means with said second covering means.
Claim 27
Dependent Claim
45 words
Apparatus as recited in claim 17, further comprising: (a) means for interrupting the scanning of a sheet covered by said first covering means; and (b) means for controlling said scanning means such that said scanning means scans a document covered by said second covering means.
Claim 28
Dependent Claim
26 words
Apparatus as recited in claim 17, wherein said second covering means comprises a covering member disposed further from said receiving means than said first covering means.
References Cited (Backward Citations)
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Cited
US4439036A
Cited
US4470695A
Cited
US4595273A
Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-30 | 1993-10-30 | 1994-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-30 | 1997-10-30 | 1998-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-30 | 2001-10-30 | 2002-05-01 | $7700.00 | Window Closed / Lapsed |