US5151313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Output sheet for image forming device and image forming device by use of the sheet
Assignee: Canon Inc
•
Filing: 1990-06-18
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Granted: 1992-09-29
•
Expires: 2010-06-18
Abstract
Abstract The present invention concerns output sheet having optical transparency of an image forming device which supports a toner image and then fixes the toner image by passing through a heating fixing device, and an image forming device by use of such sheet. For enabling detection of the conveying state of the sheet at high precision, a colored ink containing metallic powder is printed at a part of the sheet to provide a mark portion for recognition.
Inventors
- 👤 Tatsuo Takeuchi
- 👤 Koji Amemiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:55
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/65; G03G15/6588; G03G15/6591; G03G7/00; G03G2215/00; G03G2215/00362; G03G2215/00367; G03G2215/00371; G03G2215/00443; G03G2215/00493; G03G2215/00497; G03G2215/00523; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24777; Y10T428/24802; Y10T428/24851; Y10T428/24868; Y10T428/24876; Y10T428/24893; Y10T428/25; Y10T428/256
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
65 words
An output sheet of an image forming device, comprising: an output sheet having optical transparency; a marked portion for recognition provided at an edge part of the sheet, said mark being formed by printing with a colored ink having metallic powder, wherein the marked portion of the sheet has different optical properties than the unmarked portion of the sheet, which differences are detectable by light.
Claim 2
Dependent Claim
65 words
An output sheet of an image forming device, comprising: an output sheet having optical transparency; a marked portion for recognition provided at an edge part of the sheet, said mark being formed by printing with a colored ink having metallic powder, wherein the marked portion of the sheet has different optical properties than the unmarked portion of the sheet, which differences are detectable by light.
Claim 3
Dependent Claim
17 words
An output sheet according to claim 1, wherein said metallic powder of mark consists of scale-like particles.
Claim 4
Dependent Claim
34 words
An output sheet according to claim 2, wherein said scale-like metallic powder of mark has a thickness of 1 μm or less, a width of 5 to 50 μm, preferably 5 to 10 μm.
Claim 5
Dependent Claim
20 words
An output sheet according to claim 2, wherein said ink comprises 2 to 30% by weight of the metal powder.
Claim 6
Dependent Claim
91 words
An output sheet of an image forming device, comprising: an output sheet having optical transparency; a marked portion for recognition printed in a shape of a band at an edge side of the sheet, said mark being formed by printing with a colored ink having metallic powder, wherein the marked portion of the sheet has different optical properties than the unmarked portion of the sheet, which differences are detectable by light and wherein said marked portion is capable of being detected by a light emitting detector of an image forming apparatus.
Claim 7
Dependent Claim
91 words
An output sheet of an image forming device, comprising: an output sheet having optical transparency; a marked portion for recognition printed in a shape of a band at an edge side of the sheet, said mark being formed by printing with a colored ink having metallic powder, wherein the marked portion of the sheet has different optical properties than the unmarked portion of the sheet, which differences are detectable by light and wherein said marked portion is capable of being detected by a light emitting detector of an image forming apparatus.
Claim 8
Dependent Claim
26 words
An output sheet according to claim 1, wherein said marked portion has a thickness of 1 μm to 100 μm, preferably 1 μm to 40 μm.
Claim 9
Dependent Claim
44 words
An output sheet according to claim 5, wherein said sheet is a transparent resin film, having a thickness of 50 μm to 200 μm, and a width of the marked portion shaped in a band is not smaller than the thickness of the sheet.
Claim 10
Dependent Claim
25 words
An output sheet according to claim 1, wherein said marked portion has an electrical resistivity value similar to the surface resistivity of the sheet portion.
Claim 11
Dependent Claim
22 words
An output sheet according to claim 8, wherein said sheet portion has a surface resistivity of 10 8 to 10 9 ohm·cm.
Claim 12
Dependent Claim
83 words
An output sheet of an image forming device which bears a toner image and then fixing the toner image by passing it through a heating-fixing device, comprising: an output sheet having optical transparency, a marked portion for recognition provided at an edge part of the sheet, said mark being formed by printing with a colored ink having metallic powder, wherein the marked portion of the sheet has different optical properties than the unmarked portion of the sheet, which differences are detectable by light.
Claim 13
Dependent Claim
83 words
An output sheet of an image forming device which bears a toner image and then fixing the toner image by passing it through a heating-fixing device, comprising: an output sheet having optical transparency, a marked portion for recognition provided at an edge part of the sheet, said mark being formed by printing with a colored ink having metallic powder, wherein the marked portion of the sheet has different optical properties than the unmarked portion of the sheet, which differences are detectable by light.
Claim 14
Dependent Claim
17 words
An output sheet according to claim 10, wherein said metallic powder of mark consists of scale-like particles.
Claim 15
Dependent Claim
34 words
An output sheet according to claim 11, wherein said scale-like metallic powder of mark has a thickness of 1 μm or less, a width of 5 to 50 μm, preferably 5 to 10 μm.
Claim 16
Dependent Claim
20 words
An output sheet according to claim 11, wherein said ink comprises 2 to 30% by weight of the metal powder.
Claim 17
Dependent Claim
109 words
An output sheet of an image forming device which bears a toner image and then fixes the toner image by passing it through a heating-fixing device, comprising: an output sheet having optical transparency; a marked portion for recognition printed in a shape of a band at an edge side of the sheet, said mark being formed by printing with a colored ink having metallic powder, wherein the marked portion of the sheet has different optical properties than the unmarked portion of the sheet, which differences are detectable by light and wherein said marked portion is capable of being detected by a light emitting detector of an image forming apparatus.
Claim 18
Dependent Claim
109 words
An output sheet of an image forming device which bears a toner image and then fixes the toner image by passing it through a heating-fixing device, comprising: an output sheet having optical transparency; a marked portion for recognition printed in a shape of a band at an edge side of the sheet, said mark being formed by printing with a colored ink having metallic powder, wherein the marked portion of the sheet has different optical properties than the unmarked portion of the sheet, which differences are detectable by light and wherein said marked portion is capable of being detected by a light emitting detector of an image forming apparatus.
Claim 19
Dependent Claim
26 words
An output sheet according to claim 10, wherein said marked portion has a thickness of 1 μm to 100 μm, preferably 1 μm to 40 μm.
Claim 20
Dependent Claim
44 words
An output sheet according to claim 14, wherein said sheet is a transparent resin film having a thickness of 50 μm to 200 μm, and a width of the marked portion shaped in a band is not smaller than the thickness of the sheet.
Claim 21
Dependent Claim
25 words
An output sheet according to claim 10, wherein said marked portion has an electrical resistivity value similar to the surface resistivity of the sheet portion.
Claim 22
Dependent Claim
22 words
An output sheet according to claim 17, wherein said sheet portion has a surface resistivity of 10 8 to 10 9 ohm·cm.
Claim 23
Dependent Claim
96 words
An image forming device using an optically transparent output sheet, comprising: an output sheet having a marked portion for recognition at an edge part of the sheet; a convey means for conveying the sheet within the main device; and a detection means arranged within the conveying route for reading the marked portion of the sheet conveyed; wherein said marked portion is formed by printing with a colored ink containing metallic powder, and wherein the marked portion of the sheet has different optical properties than the unmarked portion of the sheet, which differences are detectable by light.
Claim 24
Dependent Claim
96 words
An image forming device using an optically transparent output sheet, comprising: an output sheet having a marked portion for recognition at an edge part of the sheet; a convey means for conveying the sheet within the main device; and a detection means arranged within the conveying route for reading the marked portion of the sheet conveyed; wherein said marked portion is formed by printing with a colored ink containing metallic powder, and wherein the marked portion of the sheet has different optical properties than the unmarked portion of the sheet, which differences are detectable by light.
Claim 25
Dependent Claim
22 words
An image forming device according to claim 19, wherein said detection means which consists of said light source and a light-receiving means.
Claim 26
Dependent Claim
19 words
An image forming device according to claim 20, wherein said metallic powder of said mark consists of scale-like particles.
Claim 27
Dependent Claim
36 words
An image forming device according to claim 21, wherein the scale-like metallic powder of said mark has a thickness of 1 μm or less, a width of 5 to 50 μm, preferable 5 to 10 μm.
Claim 28
Dependent Claim
21 words
An image forming device according to claim 22, wherein the ink comprises 2 to 30% by weight of the metallic powder.
Claim 29
Dependent Claim
123 words
An image forming device using an optically transparent output sheet, comprising: an output sheet having a marked portion for recognition printed in a shape of a band at an edge side of the sheet; a convey means for conveying the sheet within the main device; and a detection means arranged within the conveying route for reading the marked portion of the sheet conveyed; wherein said marked portion is formed by printing with a colored ink containing metallic powder, and wherein the marked portion of the sheet has different optical properties than the unmarked portion of the sheet, which differences are detectable by light and wherein said marked portion is capable of being detected by a light emitting detector of an image forming apparatus.
Claim 30
Dependent Claim
123 words
An image forming device using an optically transparent output sheet, comprising: an output sheet having a marked portion for recognition printed in a shape of a band at an edge side of the sheet; a convey means for conveying the sheet within the main device; and a detection means arranged within the conveying route for reading the marked portion of the sheet conveyed; wherein said marked portion is formed by printing with a colored ink containing metallic powder, and wherein the marked portion of the sheet has different optical properties than the unmarked portion of the sheet, which differences are detectable by light and wherein said marked portion is capable of being detected by a light emitting detector of an image forming apparatus.
Claim 31
Dependent Claim
37 words
An image forming device according to claim 19, wherein a main body of the device has a transfer means for transferring toner image onto said sheet material and a fixing means for fixing the toner image transferred.
Claim 32
Dependent Claim
35 words
An image forming device according to claim 25, wherein said fixing means has a heating roller, and said mark portion has a thickness of 1 μm to 10 μm, preferably 1 μm to 40 μm.
Claim 33
Dependent Claim
62 words
An image forming device according to claim 19, wherein said main body of the device has a transfer means for transferring toner image onto said sheet material by an electrical field, said sheet portion has a surface resistivity of 10 8 to 10 10 ohm·cm, and the marked portion is made to have an electrical resistivity value similar to the surface resistivity.
Claim 34
Dependent Claim
27 words
An image forming device according to claim 19, wherein the main body of the device transfers toner images onto the same sheet material overlappingly by plural times.
Claim 35
Dependent Claim
32 words
An image forming device according to claim 24, wherein the main body of the device outputs a color image by transferring toner images onto the same sheet material overlappingly by plural times.
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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) | 1995-09-29 | 1996-03-30 | 1996-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-29 | 2000-03-30 | 2000-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-29 | 2004-03-30 | 2004-09-29 | $7700.00 | Window Closed / Lapsed |