常說法庭有求情信,但有否加刑信 ? 即被告的親友求法官不要輕判!?

The answer is no.

As the burden of proof in a criminal case is beyond reasonable doubts, so when a court wants to impose harsher sentence, any facts used for the decision must be proved, such as victim's statement (after conviction), prior record, etc.

If the court accepts a request from the defendant's family for imposing harsher sentence, the sentencing will be appealable.

原則上可以,但非法庭上之必要審理程序,法官是可以不用理的。法官是依『法』獨立行使職權.法是為懲處違犯者應負(得)之責任,不是為撫慰平復受害個人情緒(感覺).....
如依法及相關事實態度得加重者,法官自會酌定.決非由個人意思操縱
再說『罪刑法定原則』,可不是人治由人求刑就給刑的