US3857189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for drying and fixing copying material
Assignee: Canon Inc
•
Filing: 1973-05-14
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Granted: 1974-12-31
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Expires: 1993-05-14
Abstract
Abstract This invention presents a device for drying and fixing a copying material bearing a visualized image thereon. The copying material moves in contact with the upper surface of a heated heat plate so as to dry the liquid developer on the copying material and the dried material is sent out to a tray. The heat plate has an inclined surface of convex shape or the like and is heated from its bottom surface. The copying material bearing are image is advanced in contact with the upper surface of the heat plate so as to improve the contact pressure of the copying material relative to the surface of the heat plate. The drying efficiency can be further improved by blowing a heated air from the upper side of the heat plate onto the copying material to increase the contact pressure of the copying material to the heat plate. The invention may also provides with rollers of liquid absorbing material to absorb the remaining developing liquid on the copying material.
Inventors
- 👤 H Katayama
- 👤 H Nitanda
- 👤 K Miyamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:38
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/10; G03G15/11
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
107 words
A drying-fixing device for a copying material bearing a visualized image thereon after development, comprising a heat plate having a convex surface portion on its upper surface for improving the contacting pressure of the copying material moving on said upper surface of the heat plate, plate heater means disposed on the back side surface of said heat plate, adjustably mounted compressing means engageable with said plate heater means for bringing said plate heater means into uniform and intimate contact with the back side surface of said heat plate, and means for transmitting the copying material from the liquid developing means to tray means through said heat plate.
Claim 2
Dependent Claim
107 words
A drying-fixing device for a copying material bearing a visualized image thereon after development, comprising a heat plate having a convex surface portion on its upper surface for improving the contacting pressure of the copying material moving on said upper surface of the heat plate, plate heater means disposed on the back side surface of said heat plate, adjustably mounted compressing means engageable with said plate heater means for bringing said plate heater means into uniform and intimate contact with the back side surface of said heat plate, and means for transmitting the copying material from the liquid developing means to tray means through said heat plate.
Claim 3
Dependent Claim
53 words
A drying-fixing device according to claim 1, in which air suctioning means is provided for suctioning the air from the underside of the heat plate to sending it to other portions through duct to produce the air flow at the inlet and outlet sides of the copying paper moving along the heat plate.
Claim 4
Dependent Claim
28 words
A drying-fixing device according to claim 2, in which the air suctioning means blows air onto the copying material from above thereof at the inlet and outlet sides.
Claim 5
Dependent Claim
138 words
A drying-fixing device according to claim 3, in which said air blowing means comprises flow-through air blowing means and duct means, said air blowing means comprising a flow-through blade wheel, at the centre of one side plate of the wheel a hollow boss projected into the wheel being provided, a cylindrical elastic bush formed with a non-circular cross sectional penetrating aperture being fitted into the aperture of said hollow boss, a non-circular cross sectional rotary shaft of a motor being fitted into said penetrating aperture of the elastic bush, at the centre aperture of the other side plate of the wheel the outer peripheral groove of an elastic ring being fitted, a bearing being fitted into the inner peripheral groove of the elastic ring and a supporting shaft fixed to a mounting plate being supported by said bearing.
Claim 6
Dependent Claim
145 words
A drying-fixing device for a copying material having a visualized image thereon after development, comprising a heat plate having a convex surface portion on its upper surface for improving the contacting pressure of the copying material moving on said upper surface of the heat plate, adjustably mounted plate heater means disposed on the back side surface of said heat plate comprising means for bringing said plate heater means into uniform and intimate contact with the back side surface of said heat plate, guiding means disposed at one end of said heat plate for guiding the copying material onto the upper surface of said heat plate and a pair of rollers disposed on the opposite end of said heat plate, one of said rollers having at least a surface of liquid absorbing material for absorbing the remaining liquid carrier of developing agent on the copying material.
Claim 7
Dependent Claim
145 words
A drying-fixing device for a copying material having a visualized image thereon after development, comprising a heat plate having a convex surface portion on its upper surface for improving the contacting pressure of the copying material moving on said upper surface of the heat plate, adjustably mounted plate heater means disposed on the back side surface of said heat plate comprising means for bringing said plate heater means into uniform and intimate contact with the back side surface of said heat plate, guiding means disposed at one end of said heat plate for guiding the copying material onto the upper surface of said heat plate and a pair of rollers disposed on the opposite end of said heat plate, one of said rollers having at least a surface of liquid absorbing material for absorbing the remaining liquid carrier of developing agent on the copying material.
Claim 8
Dependent Claim
15 words
A drying-fixing device according to claim 5, wherein said one roller has a heater therein.
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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) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |