Patent US5281504A successfully refreshed from Google Patents.
US5281504A
Expired / Lapsed
US
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Laminate film for receiving toner image and method for forming fixed toner image on laminate film
Assignee: Canon Inc
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Filing: 1992-02-25
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Granted: 1994-01-25
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Expires: 2012-02-25
Abstract
Abstract A laminate film suitable for providing a transparency for an OHP (overhead projector) is formed by disposing an absorbing layer on a substrate. The absorbing layer functions to allow addition of a wax component to a toner so as to improve the color mixing characteristic and anti-offset characteristic of the toner without causing a wax exudation trace which is liable to occur in a fixed toner image if the absorbing layer is not provided.
Inventors
- 👤 Makoto Kanbayashi
- 👤 Takeshi Menjo
- 👤 Takayuki Nagatsuka
- 👤 Takashige Kasuya
- 👤 Tatsuya Nakamura
- 👤 Tatsuhiko Chiba
- 👤 Kohji Inaba
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:30
CPC Classifications
G; G03; G03G; G03G7/00; G03G7/0006; G03G7/0013; G03G7/0053; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24893; Y10T428/249921; Y10T428/249953; Y10T428/25; Y10T428/259; Y10T428/31504; Y10T428/31786; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
128 words
A method for forming a fixed toner image on a laminate film, comprising; a developing step for developing an electrostatic latent image on an electrostatic image-bearing member with a toner containing a wax component to form a toner image on the electrostatic image-bearing member; a transfer step for transferring the toner image onto the laminate film, the laminate film comprising an absorbing layer for absorbing the wax component in the toner and a substrate supporting the absorbing layer, the absorbing layer comprising an inorganic fine powder and having an average pore radius of 10-200 Å; and a fixing step for fixing the toner image onto the laminate film under heat and pressure while absorbing the wax component in the toner with the absorbing layer of the laminate film.
Claim 2
Independent Claim
128 words
A method for forming a fixed toner image on a laminate film, comprising; a developing step for developing an electrostatic latent image on an electrostatic image-bearing member with a toner containing a wax component to form a toner image on the electrostatic image-bearing member; a transfer step for transferring the toner image onto the laminate film, the laminate film comprising an absorbing layer for absorbing the wax component in the toner and a substrate supporting the absorbing layer, the absorbing layer comprising an inorganic fine powder and having an average pore radius of 10-200 Å; and a fixing step for fixing the toner image onto the laminate film under heat and pressure while absorbing the wax component in the toner with the absorbing layer of the laminate film.
Claim 3
Dependent Claim
21 words
The method according to claim 1, wherein the toner comprises a polymerization toner containing the wax component obtained through suspension polymerization.
Claim 4
Dependent Claim
23 words
The method according to claim 1, wherein the toner is prepared through melt-kneading, pulverization and classification of toner ingredients including the wax component.
Claim 5
Dependent Claim
17 words
The method according to claim 1, wherein the wax component has a melting point of 30°-150° C.
Claim 6
Dependent Claim
17 words
The method according to claim 1, wherein the wax component has a melting enthalpy of 50-250 Joule/g.
Claim 7
Dependent Claim
39 words
The method according to claim 1, wherein the wax component comprises at least one member selected from paraffin wax, modified paraffin wax, polyolefin wax, modified polyolefin wax, higher fatty acid, metal salt of higher fatty acid and amide wax.
Claim 8
Dependent Claim
18 words
The method according to claim 1, wherein the laminate film comprises an absorbing layer disposed on the substrate.
Claim 9
Dependent Claim
28 words
The method according to claim 1, wherein the laminate film comprises the absorbing layer disposed on the substrate with an intermediate transparent resin layer comprising a transparent resin.
Claim 10
Dependent Claim
27 words
The method according to claim 1, wherein the absorbing layer is composed of a transparent resin layer comprising a transparent resin and inorganic fine powder dispersed therein.
Claim 11
Dependent Claim
51 words
The method according to claim 9, wherein the toner contains a binder resin in addition to the wax component, and the transparent resin has a storage modulus (G') larger than that of the binder resin, respectively as measured at a temperature of 160° C. and a frequency (w) of 100 rad/sec.
Claim 12
Dependent Claim
14 words
The method according to claim 1, wherein the absorbing layer comprises inorganic fine powder.
Claim 13
Dependent Claim
22 words
The method according to claim 11, wherein the inorganic fine powder comprises activated alumina, aluminum hydroxide, alumina hydrate, silica or titanium oxide.
Claim 14
Dependent Claim
20 words
The method according to claim 11, wherein the film shows a BET specific surface area of 0.1-30 m 2 /g.
Claim 15
Dependent Claim
20 words
The method according to claim 11, wherein the inorganic fine powder has an average primary particle size of 0.001-0.1 micron.
Claim 16
Dependent Claim
36 words
The method according to claim 1, wherein the toner comprises a resin formed from a monomer, and the wax component is present in an amount of 5-40 wt. parts per 100 wt. parts of the monomer.
References Cited (Backward Citations)
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JPS5766459A
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JPS5922794A
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JPS6162052A
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JPS6333749A
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EP0349227A2
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JPH02276670A
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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) | 1997-01-24 | 1997-07-26 | 1998-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-01-24 | 2001-07-26 | 2002-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-01-24 | 2005-07-26 | 2006-01-25 | $7700.00 | Window Closed / Lapsed |