JPS6418136A - Overhead projector - Google Patents
Overhead projectorInfo
- Publication number
- JPS6418136A JPS6418136A JP17379487A JP17379487A JPS6418136A JP S6418136 A JPS6418136 A JP S6418136A JP 17379487 A JP17379487 A JP 17379487A JP 17379487 A JP17379487 A JP 17379487A JP S6418136 A JPS6418136 A JP S6418136A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- film
- range
- erasure
- heater
- 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.)
- Pending
Links
Landscapes
- Overhead Projectors And Projection Screens (AREA)
Abstract
PURPOSE:To securely raise the temperature of a film to a transparency temperature range and prevent the temperature from exceeding the range, and to erase an image by providing a circuit means which set the set temperature of a heater for erasure differently in film feeding operation and stopping operation, and setting the temperature in the feeding operation higher than that in the stopping operation. CONSTITUTION:The set temperature of the heater 6 for erasure is switched by using a motor driving indication signal from an operation switch 5 which indicates the start and stop of a motor 3 for feeding the film. The temperature of the heater for erasure is set properly and differently in the film feeding operation and stopping operation (set temperature in feeding operation > set temperature in stopping operation) and the set temperature is switched and controlled according to whether the film is fed or stopped. Consequently, the temperature of the film securely enters the transparency range and is prevented from exceeding the range, and the image can be erased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17379487A JPS6418136A (en) | 1987-07-14 | 1987-07-14 | Overhead projector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17379487A JPS6418136A (en) | 1987-07-14 | 1987-07-14 | Overhead projector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6418136A true JPS6418136A (en) | 1989-01-20 |
Family
ID=15967277
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17379487A Pending JPS6418136A (en) | 1987-07-14 | 1987-07-14 | Overhead projector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6418136A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006274075A (en) * | 2005-03-29 | 2006-10-12 | Jfe Steel Kk | Method for repairing wall of coke oven |
-
1987
- 1987-07-14 JP JP17379487A patent/JPS6418136A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006274075A (en) * | 2005-03-29 | 2006-10-12 | Jfe Steel Kk | Method for repairing wall of coke oven |
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