US4866593A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosensitive printing apparatus
Assignee: Seiko Epson Corp
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Filing: 1987-09-18
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Granted: 1989-09-12
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Expires: 2007-09-18
Abstract
Abstract A printing apparatus for use in a printer with a photo-sensitive drum. The printing apparatus includes a spotlight source for generating a light provides essentially a point source. A photo-optical converter which is optically coupled to the spotlight source converts the light from the spotlight source to linear rays of light. A plurality of microshutters optically coupled to the photo-optical converter selectively transmits the light at selected portions of the array to the photo-sensitive drum. As a result, a light path is defined from the spot-light source through the photo-optical converter and the microshutters to the photo-sensitive drum.
Inventors
- 👤 Teiji Miura
- 👤 Toshihide Okamura
- 👤 Nobumasa Abe
- 👤 Masatoshi Yonekubo
- 👤 Hidetoshi Yoshitaki
- 👤 Hideo Yamazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:55
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/28; G02B6/2804; G02B6/2808; B; B41; B41J; B41J2/00; B41J2/435; B41J2/447; B41J2/46; B41J2/465; G01; G01D; G01D15/00; G01D15/14; G02B6/42; G02B6/4201; G02B6/4204; G02B6/4206; G02B6/4214; G02B6/4298; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/133524; G06; G06K; G06K15/00; G06K15/02; G06K15/12; G06K15/1238; G06K15/1242; G06K15/1252; B41J2/44
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
155 words
A printing apparatus for use in a printer with a photo-sensitive drum comprising: spotlight means for generating a light providing essentially a point source; a focusing mirror optically coupled to the spotlight means for converting the point source of light into a beam; means for removing infrared rays from the light optically coupled to the spotlight means; means for bending the optical path of the beam of light including a reflecting mirror, optically coupled to the focusing mirror, the reflecting mirror for transmitting infrared rays in the beam of light to outside the apparatus; and means for converting the beam of light into a linear array of rays of light and further bending the optical path; whereby a light path is defined from the spotlight means to the means for converting the beam of light into a linear array of rays of light via the focusing mirror and the means for bending the optical path.
Claim 2
Dependent Claim
155 words
A printing apparatus for use in a printer with a photo-sensitive drum comprising: spotlight means for generating a light providing essentially a point source; a focusing mirror optically coupled to the spotlight means for converting the point source of light into a beam; means for removing infrared rays from the light optically coupled to the spotlight means; means for bending the optical path of the beam of light including a reflecting mirror, optically coupled to the focusing mirror, the reflecting mirror for transmitting infrared rays in the beam of light to outside the apparatus; and means for converting the beam of light into a linear array of rays of light and further bending the optical path; whereby a light path is defined from the spotlight means to the means for converting the beam of light into a linear array of rays of light via the focusing mirror and the means for bending the optical path.
Claim 3
Dependent Claim
15 words
The printing apparatus of claim 1, wherein the reflecting mirror is a focusing dichroic mirror.
Claim 4
Dependent Claim
40 words
A printing apparatus, as claimed in claim 1, wherein the means for converting the beam of light into a linear array of rays of light includes at least one optical fiber the optical fiber being bent forming the optical path.
References Cited (Backward Citations)
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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) | 1992-09-11 | 1993-03-13 | 1993-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-11 | 1997-03-13 | 1997-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-11 | 2001-03-13 | 2001-09-12 | $7700.00 | Window Closed / Lapsed |