US4036556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preconditioning image transfer areas in document reproduction machines
Assignee: International Business Machines Corp
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Filing: 1976-01-15
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Granted: 1977-07-19
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Expires: 1996-01-15
Abstract
Abstract Newly inserted image transfer portions are subjected to a preset number of document reproduction machine operations. Such preconditioning modifies the image area such that physical properties of the image area are adjusted to ensure high-quality document reproduction.
Inventors
- 👤 Arthur Holt Knight
- 👤 Thomas Travis Underhill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:13
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0094
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
109 words
A document reproduction machine having means for substituting a new image transfer surface means for a used image transfer surface means, means indicating that said new image transfer surface means is in a predetermined position with respect to said substitute means, said machine being operable in successive machine cycles; the improvement including, in combination: means for initiating a preset number of said machine cycles and including means for cycling said machine for said preset number of machine cycles; means for inhibiting document reproduction during said preset number of machine cycles; and control means being responsive to said indication of said predetermined position to actuate said initiating and inhibiting means.
Claim 2
Dependent Claim
109 words
A document reproduction machine having means for substituting a new image transfer surface means for a used image transfer surface means, means indicating that said new image transfer surface means is in a predetermined position with respect to said substitute means, said machine being operable in successive machine cycles; the improvement including, in combination: means for initiating a preset number of said machine cycles and including means for cycling said machine for said preset number of machine cycles; means for inhibiting document reproduction during said preset number of machine cycles; and control means being responsive to said indication of said predetermined position to actuate said initiating and inhibiting means.
Claim 3
Dependent Claim
50 words
The document reproduction machine set forth in claim 1 wherein said machine has machine cycle interruption means, further including in combination: means responsive to said machine cycle interruption means for interrupting said initiating and inhibiting means; and means for reactuating said initiating and inhibiting means upon completion of said interruption.
Claim 4
Dependent Claim
31 words
The document reproduction machine set forth in claim 1 including means responsive to said initiating means to irradiate said new image transfer surface means during said preset number of machine cycles.
Claim 5
Dependent Claim
38 words
A document reproduction machine set forth in claim 3 further including toner means for introducing toner to said new image transfer surface means during said preset number of cycles and including means for cleaning said new image area.
Claim 6
Dependent Claim
35 words
A document reproduction machine set forth in claim 1 including means actuatable when said new image transfer surface means being in a fully operative position to actuate said indicating means to indicate said predetermined position.
Claim 7
Dependent Claim
96 words
A cyclically operable document reproduction machine having means for receiving a new image transfer surface portion including means indicating reception of said new image transfer surface portion, the improvement including: means for preconditioning said new image transfer surface portion for imparting predetermined physical characteristics to said new portion for facilitating quality image transfer by subsequent electrical charging and discharging of said new portion; means responsive to said indicating means for actuating said preconditioning means for operating said document reproduction machine a predetermined time; and means responsive to said indicating means to inhibit interference with said preconditioning.
Claim 8
Dependent Claim
96 words
A cyclically operable document reproduction machine having means for receiving a new image transfer surface portion including means indicating reception of said new image transfer surface portion, the improvement including: means for preconditioning said new image transfer surface portion for imparting predetermined physical characteristics to said new portion for facilitating quality image transfer by subsequent electrical charging and discharging of said new portion; means responsive to said indicating means for actuating said preconditioning means for operating said document reproduction machine a predetermined time; and means responsive to said indicating means to inhibit interference with said preconditioning.
Claim 9
Dependent Claim
51 words
The cyclically operable document reproduction machine set forth in claim 6 further including machine cycle counting means, each machine cycle requiring a predetermined elapsed time; and said preconditioning means having means responsive to said cycle counting means for indicating that a predetermined time has elapsed and for terminating said preconditioning mode.
Claim 10
Dependent Claim
51 words
The cyclically operable document reproduction machine set forth in claim 7 further including interruption means and further having control means responsive to said interruption means for interrupting said preconditioning mode; and means in said preconditioning means to re-establish said preconditioning mode operations after an interruption without detracting from said predetermined time.
Claim 11
Dependent Claim
53 words
The cyclically operable document reproduction machine set forth in claim 6 further including an image area erase unit normally turned on for erasing image transfer portions and off in inter-image portions, said portions constituting a transfer unit; and means responsive to said indicating means to inhibit turning off said image area erase unit.
Claim 12
Independent Claim
124 words
A method of operating a document reproduction machine having a photoconductor element with portions movably mounted for movement to permit successively moving unused portions thereof to an operative position for renewing an image transfer area, including the following steps: advancing a photoconductor element portion from a supply unit toward an operating position; establishing a preconditioning mode in said machine; cycling said machine a present number of times during said preconditioning mode for achieving said preconditioning for said predetermined time; tallying said cycles; releasing said machine from said mode after said preset number of cycles; indicating that copies can be made from said advanced photoconductor element portion; and enabling interruption of said cyling without detracting or altering the preset number of cycles for said preconditioning.
Claim 13
Independent Claim
124 words
A method of operating a document reproduction machine having a photoconductor element with portions movably mounted for movement to permit successively moving unused portions thereof to an operative position for renewing an image transfer area, including the following steps: advancing a photoconductor element portion from a supply unit toward an operating position; establishing a preconditioning mode in said machine; cycling said machine a present number of times during said preconditioning mode for achieving said preconditioning for said predetermined time; tallying said cycles; releasing said machine from said mode after said preset number of cycles; indicating that copies can be made from said advanced photoconductor element portion; and enabling interruption of said cyling without detracting or altering the preset number of cycles for said preconditioning.
Claim 14
Dependent Claim
45 words
The method set forth in claim 10 further: inhibiting first predetermined machine functions during said preconditioning mode; altering second predetermined machine functions during said preconditioning mode; said first predetermined functions relating to reproduced copy handling; and said second predetermined functions relating to photoconductor element processes.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |