GB1289669A - - Google Patents
Info
- Publication number
- GB1289669A GB1289669A GB1289669DA GB1289669A GB 1289669 A GB1289669 A GB 1289669A GB 1289669D A GB1289669D A GB 1289669DA GB 1289669 A GB1289669 A GB 1289669A
- Authority
- GB
- United Kingdom
- Prior art keywords
- machine
- lamp
- sixty seconds
- triac
- scr
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/80—Details relating to power supplies, circuits boards, electrical connections
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Light Sources And Details Of Projection-Printing Devices (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
1289669 Semi-conductor time delay switching Circuit COPYSTATICS MFG CORP 6 Sept 1971 [5 Oct 1970] 41407/71 Heading H3T [Also in Division B8] In a copying machine, while no document if present between a lamp 32 and a detector 34 a relay 24 remains energized to hold open a contact 23, and potential builds up at the junction between a diode 13 and a capacitor 14. After sixty seconds the potential breaks down a neon lamp 18 and turns on SCR 20 to turn off a Triac and stop the machine. If a further document is fed within the sixty seconds, closing of the contact 23 shorts the lamp 18 and prevents turning off of the Triac 46, so that the machine continues to operate. If the machine is unused for sixty seconds it is therefore stopped, and the SCR remains turned on, so that to restart the machine, the switch 11 must be opened and then closed again.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US7795070A | 1970-10-05 | 1970-10-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1289669A true GB1289669A (en) | 1972-09-20 |
Family
ID=22140972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1289669D Expired GB1289669A (en) | 1970-10-05 | 1971-09-06 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3676691A (en) |
| CA (1) | CA951002A (en) |
| GB (1) | GB1289669A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4831273A (en) * | 1987-10-29 | 1989-05-16 | Pitney Bowes Inc. | Mailing machine sensing device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3169476A (en) * | 1962-11-30 | 1965-02-16 | Linotype Machinery Ltd | Photoelectric no sheet trip device for a printing press |
| US3401265A (en) * | 1964-07-06 | 1968-09-10 | Mallory & Co Inc P R | Current control circuit with silicon controlled rectifiers and a phase shifting circuit |
| US3421005A (en) * | 1966-01-06 | 1969-01-07 | Boeing Co | Ambient light controlled solid state relay |
| US3584222A (en) * | 1969-01-23 | 1971-06-08 | Harold Philip Nesbitt | Photoelectric switch for turning on lights in response to activating beam of light |
| US3593065A (en) * | 1969-07-14 | 1971-07-13 | Xerox Corp | Sheet detection apparatus |
-
1970
- 1970-10-05 US US77950A patent/US3676691A/en not_active Expired - Lifetime
-
1971
- 1971-09-06 GB GB1289669D patent/GB1289669A/en not_active Expired
- 1971-10-04 CA CA124,322,A patent/CA951002A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3676691A (en) | 1972-07-11 |
| CA951002A (en) | 1974-07-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |