US4595285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Translucent document cover for use in electrophotographic copying machine
Assignee: Sharp Corp
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Filing: 1984-11-21
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Granted: 1986-06-17
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Expires: 2004-11-21
Abstract
Abstract A translucent document cover for an electrophotographic copying machine is provided for pressing a copy document onto a document table. For example, it comprises a combination of a first film which is white and translucent, and a second film which is transparent. Preferably, it has an opacity of about 80-85%. The translucent document cover has some line indexes for indicating the accurate positioning of the copy document. Further, the document cover may be provided with marks for indicating ratios of magnifying/reducing the copy document.
Inventors
- 👤 Yoshihisa Miwa
- 👤 Haruyoshi Migita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:36
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/62; G03B27/6207; G03B27/6221; G03B27/6228
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
43 words
An electrophotographic copying machine comprising: table means on which a copy document is to be placed for copying; and translucent cover means for covering and pressing the copy document onto said table means, said cover means having a opacity of from about 80-85%.
Claim 2
Dependent Claim
43 words
An electrophotographic copying machine comprising: table means on which a copy document is to be placed for copying; and translucent cover means for covering and pressing the copy document onto said table means, said cover means having a opacity of from about 80-85%.
Claim 3
Dependent Claim
39 words
The electrophotographic copying machine of claim 1, wherein said cover means for pressing a copy document onto a transparent table comprises: a first film which is white and translucent; and a second transparent film overlayed on said first film.
Claim 4
Dependent Claim
22 words
The electrophotographic copying machine of claim 1, wherein said translucent cover means comprises a white, translucent film sandwiched between two transparent films.
Claim 5
Dependent Claim
24 words
The electrophotographic copying machine of claim 1, wherein said cover is provided with index lines for indicating the accurate positioning of said copy document.
Claim 6
Dependent Claim
25 words
The electrophotographic copying machine of claim 4, wherein said cover is further provided with mark means for indicating a ratio for magnifying/reducing the copy document.
Claim 7
Dependent Claim
36 words
The electrophotographic copying machine of claim 2, wherein said first film is made of vinyl chloride and the material of said second film is selected from the group consisting of polyethylene terephthalate, propylene, and chlorosulfonated polyethylene.
References Cited (Backward Citations)
US3957370A
Cited
US4436402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-16 | 1989-12-16 | 1990-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-16 | 1993-12-16 | 1994-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-16 | 1997-12-16 | 1998-06-17 | $7700.00 | Window Closed / Lapsed |