US5329299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser beam printer
Assignee: Minolta Co Ltd
•
Filing: 1991-11-20
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Granted: 1994-07-12
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Expires: 2011-11-20
Abstract
Abstract A laser beam printer having an image formation cartridge which is mounted in and dismounted from a printer body, and a light source for radiating a laser beam modulated in accordance with image data. The laser beam radiated from the light source enters the image formation cartridge from a front side of the printer body toward a rear side of the printer body. The image formation cartridge has a substantially non-reflective surface or alternatively a diffused surface around a laser beam receiving portion.
Inventors
- 👤 Isamu Odagiri
- 👤 Takayuki Ogawa
- 👤 Tatsuya Eguchi
- 👤 Norio Tamada
- 👤 Katsunari Oda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:19
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/16; G03G21/18; G03G21/1803; G03G21/1814; G03G15/00; G03G15/04; G03G15/04036; G03G15/04045; G03G15/04072; G03G21/1604; G03G21/1623; G03G21/1628; G03G21/1661; G03G21/1839; G03G2221/00; G03G2221/16; G03G2221/1636; G03G2221/1651; G03G2221/1654; G03G2221/1672; G03G2221/18; G03G2221/1807; G03G2221/183; G03G2221/1846
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
126 words
A laser beam printer comprising: a printer body; said printer body having a front side, said front side being the side of the printer at which an operator is intended to be during operation of the printer; a first block and a second block which are set in the printer body, one of the blocks being displaceable from a set position; a light source, disposed in the first block, for radiating a laser beam modulated in accordance with image data; and optical member means for guiding the laser beam radiated from the light source out of the first block and into the second block so that the laser beam travels from a front side of the printer body toward a rear side of the printer body.
Claim 2
Dependent Claim
126 words
A laser beam printer comprising: a printer body; said printer body having a front side, said front side being the side of the printer at which an operator is intended to be during operation of the printer; a first block and a second block which are set in the printer body, one of the blocks being displaceable from a set position; a light source, disposed in the first block, for radiating a laser beam modulated in accordance with image data; and optical member means for guiding the laser beam radiated from the light source out of the first block and into the second block so that the laser beam travels from a front side of the printer body toward a rear side of the printer body.
Claim 3
Dependent Claim
42 words
A laser beam printer as claimed in claim 1, wherein the second block has a substantially non-reflective surface a diffusive surface on a surface crossing the optical path when the first block or the second block is displaced from the set position.
Claim 4
Dependent Claim
23 words
A laser beam printer as claimed in claim 1, wherein a black portion is provided on the second block as the non-reflective surface.
Claim 5
Dependent Claim
122 words
A laser beam printer comprising: a printer body; said printer body having a front side, said front side being the side of the printer at which an operator is intended to be during operation of the printer; an image formation cartridge which is mountable in and dismountable from the printer body; a light source, disposed in an optically shielded unit in the printer body, for radiating a laser beam modulated in accordance with image data; and optical member means for guiding the laser beam radiated from the light source out of the optically shielded unit to the image formation cartridge so that the laser beam travels from a front side of the printer body toward a rear side of the printer body.
Claim 6
Dependent Claim
122 words
A laser beam printer comprising: a printer body; said printer body having a front side, said front side being the side of the printer at which an operator is intended to be during operation of the printer; an image formation cartridge which is mountable in and dismountable from the printer body; a light source, disposed in an optically shielded unit in the printer body, for radiating a laser beam modulated in accordance with image data; and optical member means for guiding the laser beam radiated from the light source out of the optically shielded unit to the image formation cartridge so that the laser beam travels from a front side of the printer body toward a rear side of the printer body.
Claim 7
Dependent Claim
25 words
A laser beam printer as claimed in claim 4, wherein the image formation cartridge has a substantially non-reflective surface around a laser beam receiving portion.
Claim 8
Dependent Claim
24 words
A laser beam printer as claimed in claim 5, wherein a black portion is provided on the image formation cartridge as the non-reflective surface.
Claim 9
Dependent Claim
38 words
A laser beam printer as claimed in claim 1, wherein the second block has a diffusive surface on a surface crossing the optical path when the first block or the second block is displaced from the set position.
Claim 10
Dependent Claim
24 words
A laser beam printer as claimed in claim 4, wherein the image formation cartridge has a diffusive surface around a laser beam receiving portion.
Claim 11
Dependent Claim
16 words
The laser beam printer as claimed in claim 1, wherein said laser beam is radiated descendingly.
Claim 12
Dependent Claim
52 words
The laser beam printer as claimed in claim 1, wherein the second block has an upper surface which also serves as an upper surface of the printer body, and when the second block is displaced from the set position, the upper surface pivots upward on the rear side of the printer body.
References Cited (Backward Citations)
US4467467A
Cited
JPS61219060A
Cited
US4740817A
Cited
JPS61269169A
Cited
US4873548A
Cited
JPS63193157A
Cited
US5002266A
Cited
EP0331324A2
Cited
US5047803A
Cited
EP0346934A2
Cited
US5001516A
Cited
US4952946A
Cited
EP0487039A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-07-11 | 1998-01-10 | 1998-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-07-11 | 2002-01-10 | 2002-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-07-11 | 2006-01-10 | 2006-07-12 | $7700.00 | Window Closed / Lapsed |