US4734739A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image forming apparatus with function permitting key entry during waiting time
Assignee: Canon Inc
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Filing: 1984-07-03
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Granted: 1988-03-29
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Expires: 2004-07-03
Abstract
Abstract An image forming apparatus includes an image forming unit for forming an image on a recording medium, a command unit for commanding image forming conditions, a first switch for connecting a power source to the apparatus, a first detector for detecting an operational position of the first switch, a second switch for enabling the first switch to connect the power source to the apparatus, a second detector for detecting an operational position of the second switch, and a memory having microprograms stored therein for operatively controlling loads on the image forming unit. The operation of the image forming unit is controlled by signals derived from the first and second detectors and the microprograms. Information can be entered via a keyboard during waiting time.
Inventors
- 👤 Tsuneki Inuzuka
- 👤 Koichi Murakami
- 👤 Kenji Kurita
- 👤 Hisashi Sakamaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:45
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
156 words
Image forming apparatus comprising: number input means for inputting the desired number of image formations; first display means for indicating the set number second display means for indicating a ready condition in which the apparatus is ready to perform an image forming operation; starter means for commanding a start of the image forming operation; timer means for controlling the first display means to automatically return the set number to one if the starter means fails to command the start of an image forming operation during a predetermined period of time after the number is set by the number input means; and control means for controlling the number input means to permit the number input means to set the number of image formations even during a period for which the apparatus stands ready to perform the image forming operation, wherein said control means controls the timer means to actuate the timer after the ready condition is indicated.
Claim 2
Dependent Claim
156 words
Image forming apparatus comprising: number input means for inputting the desired number of image formations; first display means for indicating the set number second display means for indicating a ready condition in which the apparatus is ready to perform an image forming operation; starter means for commanding a start of the image forming operation; timer means for controlling the first display means to automatically return the set number to one if the starter means fails to command the start of an image forming operation during a predetermined period of time after the number is set by the number input means; and control means for controlling the number input means to permit the number input means to set the number of image formations even during a period for which the apparatus stands ready to perform the image forming operation, wherein said control means controls the timer means to actuate the timer after the ready condition is indicated.
Claim 3
Dependent Claim
165 words
Electrophotographic copying apparatus comprising: copy number input means for inputting the desired number of copies of an original document; first display means for indicating the set number; second display means for indicating a copy ready condition in which the apparatus is ready to perform a copying operation; copy starter means for commanding a start of the copying operation; timer means for controlling the first display means to automatically return the set number of copies to one if the copy starter means fails to command the start of a copying operation during a predetermined period of time after the number of copies is set by the copy number input means; and control means for controlling the copy number input means to permit the copy number input means to set the number of copies even during a period for which the apparatus stands ready to perform the copying operation, wherein said control means controls the timer to actuate the timer after the copy ready condition is indicated.
Claim 4
Dependent Claim
165 words
Electrophotographic copying apparatus comprising: copy number input means for inputting the desired number of copies of an original document; first display means for indicating the set number; second display means for indicating a copy ready condition in which the apparatus is ready to perform a copying operation; copy starter means for commanding a start of the copying operation; timer means for controlling the first display means to automatically return the set number of copies to one if the copy starter means fails to command the start of a copying operation during a predetermined period of time after the number of copies is set by the copy number input means; and control means for controlling the copy number input means to permit the copy number input means to set the number of copies even during a period for which the apparatus stands ready to perform the copying operation, wherein said control means controls the timer to actuate the timer after the copy ready condition is indicated.
Claim 5
Dependent Claim
38 words
Apparatus as claimed in claim 2, further comprising copy sheet feed means, the control means being constructed to disable the copy number input means to set the number of copies while the copy sheet feed means is operative.
Claim 6
Dependent Claim
177 words
Electrophotographic copying apparatus comprising: copy number input means for inputting the desired number of copies of an original document; first display means for indicating the set number; second display means for indicating a copy ready condition in which the apparatus is ready to perform a copying operation; copy starter means for commanding a start of the copying operation; timer means for controlling the first display means to automatically return the set number of copies to one if the copy starter means fails to command the start of a copying operation during a predetermined period of time after the number of copies is set by the copy number input means; control means for controlling the copy number input means to permit the copy number input means to set the number of copies even during a period for which the apparatus stands ready to perform the copying operation; and copy sheet feed means, the control means being constructed to disable the copy number input means to set the number of copies while the copy sheet feed means is operative.
Claim 7
Dependent Claim
177 words
Electrophotographic copying apparatus comprising: copy number input means for inputting the desired number of copies of an original document; first display means for indicating the set number; second display means for indicating a copy ready condition in which the apparatus is ready to perform a copying operation; copy starter means for commanding a start of the copying operation; timer means for controlling the first display means to automatically return the set number of copies to one if the copy starter means fails to command the start of a copying operation during a predetermined period of time after the number of copies is set by the copy number input means; control means for controlling the copy number input means to permit the copy number input means to set the number of copies even during a period for which the apparatus stands ready to perform the copying operation; and copy sheet feed means, the control means being constructed to disable the copy number input means to set the number of copies while the copy sheet feed means is operative.
References Cited (Backward Citations)
US4090787A
Cited
US4128756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-29 | 1991-09-28 | 1992-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-29 | 1995-09-28 | 1996-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-29 | 1999-09-28 | 2000-03-29 | $7700.00 | Window Closed / Lapsed |