US4568625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developer comprising a modified silicone oil and development process for electrophotography
Assignee: Canon Inc
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Filing: 1984-04-24
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Granted: 1986-02-04
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Expires: 2004-04-24
Abstract
Abstract A developer contains a silicone oil which has an amine on side chain thereof, a development process comprises arranging a member holding an electrostatic image on the surface and a member for carrying a toner on the surface and a fixing method comprises contacting a toner image on an image-supporting member with a heated roller, said toner image being formed of a toner which contains a silicone oil having an amine on side chain thereof and has an MI of 0.01-10 g/10 min.
Inventors
- 👤 Masaki Uchiyama
- 👤 Yasuo Mitsuhashi
- 👤 Kazunori Murakawa
- 👤 Masanori Takenouchi
- 👤 Eiichi Imai
- 👤 Koushi Suematsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:41
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/087; G03G9/08702; G03G9/08742; G03G9/08773
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
14 words
A developer containing a silicone oil which has an amine on side chain thereof.
Claim 2
Dependent Claim
14 words
A developer containing a silicone oil which has an amine on side chain thereof.
Claim 3
Dependent Claim
16 words
The developer of claim 1, wherein said silicone oil is contained in an inorganic fine powder.
Claim 4
Dependent Claim
16 words
The developer of claim 2, wherein the inorganic fine powder is a fine powder of silica.
Claim 5
Dependent Claim
20 words
The developer of claim 1, wherein said silicone oil is contained in toner having an MI of 0.01-10 g/10 min.
Claim 6
Dependent Claim
75 words
The developer of claim 1, wherein said silicone oil has a constituent represented by the formula: ##STR3## wherein R 1 represents hydrogen, alkyl, aryl or alkoxy; R 2 represents alkylene and/or phenylene; and R 3 and R 4 represent each hydrogen, alkyl or aryl; wherein the alkyl, aryl, alkylene and phenylene each may have an amine, if desired, a substituent such as halogen provided that the substituent does not impair the chargeability of the developer.
Claim 7
Dependent Claim
77 words
The developer of claim 2, wherein said silicone oil has a constituent represented by the formula ##STR4## wherein R 1 represents hydrogen, alkyl, aryl or alkoxy; R 2 represents alkylene and/or phenylene; and R 3 and R 4 represent each hydrogen, alkyl or aryl; wherein the alkyls, aryls, alkylene and phenylene each may have an amine, and if desired, or a substituent such as halogen provided that the substituent does not impair the chargeability of the developer.
Claim 8
Dependent Claim
76 words
The developer of claim 3, wherein said silicone oil has a constituent represented by the formula ##STR5## wherein R 1 represents hydrogen, alkyl, aryl or alkoxy; R 2 represents alkylene and/or phenylene; and R 3 and R 4 represent each hydrogen, alkyl or aryl; wherein the alkyls, aryls alkylene and phenylene each may have an amine and if desired, a substituent such as halogen provided that the substituent does not impair the chargeability of the developer.
Claim 9
Dependent Claim
76 words
The developer of claim 4, wherein said silicone oil has a constituent represented by the formula ##STR6## wherein R 1 represents hydrogen, alkyl, aryl or alkoxy; R 2 represents alkylene and/or phenylene; and R 3 and R 4 represent each hydrogen, alkyl or aryl; wherein the alkyls, aryls, alkylene and phenylene each may have an amine, and if desired, a substituent such as halogen provided that the substituent does not impair the chargeability of the toner.
Claim 10
Dependent Claim
15 words
The developer of claim 1, wherein said silicone oil is contained in a magnetic toner.
Claim 11
Dependent Claim
19 words
The developer of claim 9, wherein the magnetic toner comprises an inorganic fine powder treated with said silicone oil.
Claim 12
Dependent Claim
16 words
The developer of claim 10, wherein the inorganic fine powder is a fine powder of silica.
Claim 13
Dependent Claim
84 words
A development process which comprises arranging a member holding an electrostatic image on the surface and a member for carrying a toner on the surface to face each other with a definite gap being kept therebetween at a development section; applying a toner containing a silicone oil having an amine on side chain thereof to the toner-carrying member in the thickness less than said gap; and transferring the applied toner onto the electrostatic image holding member at the development section, thereby developing the image.
Claim 14
Dependent Claim
84 words
A development process which comprises arranging a member holding an electrostatic image on the surface and a member for carrying a toner on the surface to face each other with a definite gap being kept therebetween at a development section; applying a toner containing a silicone oil having an amine on side chain thereof to the toner-carrying member in the thickness less than said gap; and transferring the applied toner onto the electrostatic image holding member at the development section, thereby developing the image.
Claim 15
Dependent Claim
26 words
The development process of claim 12, wherein said toner comprises an inorganic fine powder treated with a silicone oil having an amine on side chain thereof.
Claim 16
Dependent Claim
17 words
The development process of claim 13, wherein said inorganic fine powder is a fine powder of silica.
Claim 17
Dependent Claim
16 words
The development process of claim 13, wherein said toner has an MI of 0.01-10 g/10 min.
Claim 18
Dependent Claim
77 words
The development process of claim 12, wherein said silicone oil has a constituent represented by the formula ##STR7## wherein R 1 represents hydrogen, alkyl, aryl or alkoxy; R 2 represents alkylene and/or phenylene; and R 3 and R 4 represent each hydrogen, alkyl or aryl; wherein the alkyls, aryls, alkylene and phnylene each may have an amine, and if desired, a substituent such as halogen provided that the substituent does not impair the chargeability of a toner.
Claim 19
Dependent Claim
47 words
A fixing method which comprises contacting a toner image on an image-supporting member with a heated roller, said toner image being formed of a toner which contains a silicone oil having an amine on side chain thereof and has an MI (melt index) of 0.01-10 g/10 min.
Claim 20
Dependent Claim
47 words
A fixing method which comprises contacting a toner image on an image-supporting member with a heated roller, said toner image being formed of a toner which contains a silicone oil having an amine on side chain thereof and has an MI (melt index) of 0.01-10 g/10 min.
References Cited (Backward Citations)
US4430409A
Cited
US4397941A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-02-03 | 1989-08-05 | 1990-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-03 | 1993-08-05 | 1994-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-03 | 1997-08-05 | 1998-02-04 | $7700.00 | Window Closed / Lapsed |